NUREG/IA-0162

International

Agreement Report

Test LOBI-BL06:

Post-Test Analysis and

RELAP5/MOD3.2.1

Code Performance Assessment

Prepared by

T. Fiore

P. Marsili

Agenzia Nazionale per la Protezione dell' Ambiente (ANPA)

Via Vitaliano Brancati 48

00144 Roma, Italy

Office of Nuclear Regulatory Research

U.S. Nuclear Regulatory Commission

Washington, DC 20555-0001

April 1999

Prepared as part of

The Agreement on Research Participation and Technical Exchange under the International Code Application and Maintenance Program (CAMP)

Published by

U.S. Nuclear Regulatory Commission
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owned nghts.
NUREGIIA-0162

International

Agreement Report

Test LOBI-BL06:

Post-Test Analysis and

RELAP5/MOD3.2.1

Code Performance Assessment

Prepared by

I. Fiore

P. Marsili

Agenzia Nazionale per la Protezione dell' Ambiente (ANPA)

Via Vitaliano Brancati 48

00144 Roma, Italy

Office of Nuclear Regulatory Research

US. Nuclear Regulatory Commission

Washington, DC 2055--0001

April 1999

Prepared as part of

The Agreement on Research Participation and Technical Emchange under the International Code Application and Maintenance Progrna (CAMP)

Published by

U.S. Nuclear Regulatory Commission
ACKNOWLEDGMENTS

The authors wish to thank Dr. Giovanni Bava, Dr. Gabriele Del Nero, Dr.

Andrea Orazi and Dr. Aldo Buccafurni, all from ANPA, for reviewing the report and

for their useful comments.

Many tanks are also due to Dr. Alessandro Annunziato (JRC-Ispra) for

providing the initial input deck of LOBI-MOD2 test facility and for giving significant

help in understanding the plant/instrumentation features and in investigating specific

code model behavior.

Finally many thanks are due to Prof. Francesco D'Auria and Dr. Walter

Giannotti (DCMN - University of Pisa) for their support for the quantitative accuracy

evaluation by FFT.
CONTENTS

ABSTRACT III

LIST OF FIGURES IV

LIST OF TABLES VI

1. INTRODUCTION 1

2. DESCRIPTION OF THE EXPERIMENT 2

2.1 DESCRIPTION OF THE LOBI FACILITY 2

2.2 SYSTEM CONFIGURATION AND TEST OVERVIEW 6

2.3 ANALYSIS OF THE TEST DATA 11

3. ADOPTED CODE AND NODALIZATION 22

3.1 CODE RELAP$/MOD3.2 22

3.2 DESCRIPTION OF THE ADOPTED NODALIZATION 23

4. ANALYSIS OF POST-TEST CALCULATIONS RESULTS 33

4.1 STEADY STATE CALCULATIONS (PHASE 1 OF THE POST-TEST ANALYSIS) 33

4.2 REFERENCE CALCULATION RESULTS 36

4.2.1 Phase 1: From the opening of the break to the pumps arrest (0-2820 s) 37

4.2.2 Phase 2: From the pumps stop to the end of the accumulator injection (2820-4050 s) 38

4.2.3 Phase 3: From the end of the accumulator injection to the final core rewetting (4050-6900

s) 41

4.3 SENSITIVITY CALCULATIONS 42

4.3.1 R01-case 44

4.3.2 R02-case 44

4.3.3 R03-case 44

4.3.4 R04-case 45

4.4 QUANTITATIVE ACCURACY EVALUATION 46

5. CONCLUSIONS 78

REFERENCES 79

LIST OF ABBREVIATIONS 80

I
APPENDIX 1: Results of the reference calculation

APPENDIX 2: Results of the sensitivity calculation ROI

APPENDIX 3: Results of the sensitivity calculation R02

APPENDIX 4: Results of the sensitivity calculation R03

APPENDIX 5: Results of the sensitivity calculation R04

APPENDIX 6: Short overview of the UMAE basic principles

APPENDIX 7: Input deck

II
ABSTRACT

This report deals with the results of the "post-test analysis" of the test BL-06

performed in the LOBI/MOD2 test facility.

LOBI/MOD2 is an integral test facility that represents, at approximately 1:712 scale, a

four loop (KWU design, 1300 MWe) PWR.

The test BL-06 simulates a 1% cold leg break LOCA, with the main coolant pumps

switched off very late in the transient.

The calculations have been realized with the code Relap5/Vod3.2.1. The uncertainty

evaluation of the calculation result has been performed using a specific method

developed by Pisa University.

III
LIST OF FIGURES

FIG. 2.1: LOBI/MOD2 FACILITY - PRIMARY CIRCUIT 3

FIG. 2.2 : LOBI/MOD2 FACILITY - SECONDARY CIRCUIT 4

FIG. 2.3 : PRIMARY AND SECONDARY PRESSURE 14

FIG. 2.4 : BREAK MASS FLOW RATE 14

FIG. 2.5 : PRIMARY AND SECONDARY PRESSURE 15

FIG. 2.6 : VOID FRACTION AT PUMP INLET AND PUMP HEAD (IL) 15

FIG. 2.7 : VOID FRACTION AT PUMP INLET AND PUMP HEAD (BL) 16

FIG. 2.8 : PRESSURE DIFFERENCE AT STEAM GENERATOR INLET (IL) 16

FIG. 2.9: PRESSURE DIFFERENCE AT STEAM GENERATOR INLET (BL) 17

FIG. 2.10 : MIXTURE AND COLLAPSED LEVEL IN THE RISER OF THE VESSEL 17

FIG. 2.11: HEATER ROD TEMPERATURE OF THE SUPERIOR LEVELS (LEV. 12-7) 18

FIG. 2.12 : HEATER ROD TEMPERATURE OF THE INFERIOR LEVELS (LEV. 6-1) 18

FIG. 2.13 : COLLAPSED LEVEL IN THE DOWNCOMER 19

FIG. 2.14 : HEATER ROD TEMPERATURE LEVELS 9 AND 10 19

FIG. 2.15: HEATER ROD TEMPERATURE LEVEL 11 20

FIG. 2.16 : PRIMARY SYSTEM MASS INVENTORY 20

FIG. 2.17: HEATER ROD TEMPERATURE OF THE SUPERIOR LEVELS (LEV. 12-7) 21

FIG. 2.18 : PRIMARY SYSTEM PRESSURE AND PORV VOLUMETRIC FLOW 21

FIG. 3.1 : RELAP5/MOD3.2.1 NODALIZATION OF LOBI/MOD2 FACILITY 26

FIG. 4.1 : HEATING POWER 52

FIG. 4.2 : PRIMARY SYSTEM PRESSURE 52

FIG. 4.3 : BREAK MASS FLOW RATE 53

FIG. 4.4 : BREAK INTEGRAL FLOW RATE 53

FIG. 4.5 : VOID FRACTION AT PUMP INLET AND PUMP HEAD (IL) 54

FIG. 4.6 : VOID FRACTION AT PUMP INLET AND PUMP HEAD (BL) 54

FIG. 4.7 :VOID FRACTION AT PUMPS INLET 55

FIG. 4.8 : VOID FRACTION AT STEAM GENERATOR INLET (IL) 55

FIG. 4.9 : VOID FRACTION AT STEAM GENERATOR INLET (BL) 56

FIG. 4.10 : COLLAPSED LEVEL IN THE DOWNCOMER 56

FIG. 4.11: COLLAPSED LEVEL IN THE RISER 57

FIG. 4.12: PRIMARY SYSTEM MASS INVENTORY 57

FIG. 4.13 : ROD SURFACE TEMPERATURE (HIGH LEVEL) 58

FIG. 4.14 : ROD SURFACE TEMPERATURE (MIDDLE LEVEL) 58

FIG. 4.15 : ROD SURFACE TEMPERATURE (BOTTOM LEVEL) 59

FIG. 4.16 : CORE INLET FLUID TEMPERATURE 59

FIG. 4.17 :CORE OUTLET FLUID TEMPERATURE 60

FIG. 4.18 : PRIMARY SYSTEM PRESSURE 60

FIG. 4.19 : ACCUMULATOR SYSTEM MASS FLOW RATE 61

FIG. 4.20 : INTEGRAL ACCUMULATOR SYSTEM MASS FLOW RATE 61

FIG. 4.21 : MASS FLOW RATE OF JUNCTIONS THAT CONNECT THE VESSEL TO THE HOT

LEG 62

FIG. 4.22 : HEATER ROD TEMPERATURE 62

FIG. 4.23 : ACCUMULATOR MASS FLOW RATE AND MASS FLOW RATE OF THE INLET

JUNCTION OF THE VOLUME IN WHICH THE ACCUMULATOR INJECTS 63

FIG. 4.24 : VOID FRACTION AT THE PUMP INLET OF THE IL 63

FIG. 4.25 : BREAK MASS FLOW RATE 64

FIG. 4.26 : BREAK INTEGRAL FLOW RATE 64

FIG. 4.27 : MAIN COOLANT PUMPS SPEED 65

FIG. 4.28 : PRIMARY SYSTEM MASS INVENTORY 65

FIG. 4.29 : COLLAPSED LEVEL IN THE RISER 66

FIG. 4.30 : ROD SURFACE TEMPERATURE (HIGH LEVEL) 66

FIG. 4.31: PRIMARY SYSTEM PRESSURE 67

FIG. 4.32 : VOID FRACTION AT STEAM GENERATOR INLET (IL) 67

IV
FIG. 4.33: VOID FRACTION AT THE UPSTREAM AND DOWNSTREAM VOLUMES OF THE

JUNCTION 208 68

FIG. 4.34: MASS FLOW RATE OF JUNCTION THAT CONNECTS THE VESSEL TO THE HOT

LEG OF INTACT LOOP 68

FIG. 4.35: HEATER ROD TEMPERATURE 69

FIG. 4.36: PRIMARY SYSTEM PRESSURE 69

FIG. 4.37: VOID FRACTION IN THE LOOP SEAL (VOL. 13005) 70

FIG. 4.38: VOID FRACTION IN THE LOOP SEAL (VOL. 13004) 70

FIG. 4.39: VOID FRACTION IN THE LOOP SEAL (VOL. 13003) 71

FIG. 4.40: COLLAPSED LEVEL IN THE DOWNCOMER 71

FIG. 4.41: COLLAPSED LEVEL IN THE RISER 72

FIG. 4.42: ACCUMULATOR MASS FLOW RATE 72

FIG. 4.43: HEATER ROD TEMPERATURE 73

FIG. 4.44: MASS FLOW RATE OF JUNCTION THAT CONNECTS THE VESSEL TO THE HOT

LEG OF INTACT LOOP 73

FIG. 4.45: MASS FLOW RATE OF JUNCTION THAT CONNECTS THE VESSEL TO THE HOT

LEG OF BROKEN LOOP 74

FIG. 4.46 :HEAT LOSS OF THE SECONDARY SYSTEM OF THE STEAM GENERATOR (IL) 74

FIG. 4.47: HEAT TRANSFER EXCHANGE POWER FOR THE INTACT LOOP STEAM

GENERATOR 75

FIG. 4.48: CORE INLET FLUID TEMPERATURE 75

FIG. 4.49: VOID FRACTION IN THE U-TUBES 76

FIG. 4.50: PRESSURE DIFFERENCE IN THE ASCENDING SIDE OF THE LOOP SEAL (IL) 76

FIG. 4.51: LPIS MASS FLOWRATE 77

FIG. 4.52: BREAK MASS FLOW RATE 77

V
LIST OF TABLES

TAB. 2.1 - SIGNIFICANT PARAMETERS OF THE LOBI/MOD2 FACILITY 5

TAB. 2.2 - SYSTEM CONFIGURATION FOR THE TEST BL-06 6

TAB. 2.3 - SYSTEM HEAT LOSS FOR TEST BL-06 7

TAB. 2.4 - OPERATIONAL SET POINTS 7

TAB. 2.5 - OPERATIONAL INITIAL CONDITIONS FOR THE TEST BL-06 9

TAB. 3.1 - DETAILS OF NODES GEOMETRY IN THE RELAP5 NODALIZATION -

CORRESPONDENCES BETWEEN CODE NODES AND HYDRAULIC ZONES (CONT'ED) 27

TAB. 3.1 - DETAILS OF NODES GEOMETRY IN THE RELAP5 NODALIZATION -

CORRESPONDENCES BETWEEN CODE NODES AND HYDRAULIC ZONES (CONT'ED) 29

TAB. 3.1 - DETAILS OF NODES GEOMETRY IN THE RELAP5 NODALIZATION -

CORRESPONDENCES BETWEEN CODE NODES AND HYDRAULIC ZONES (CONT'ED) 30

TAB. 3.1 - DETAILS OF NODES GEOMETRY IN THE RELAP5 NODALIZATION -

CORRESPONDENCES BETWEEN CODE NODES AND HYDRAULIC ZONES 31

TAB. 3.2 - DETAILS OF RELEVANT JUNCTION RELATED PARAMETERS OF NODALIZATION 32

TAB. 4.1 - COMPARISON BETWEEN EXPERIMENTAL AND CALCULATED INITIAL

CONDITIONS 34

TAB. 4.2 - CHRONOLOGY OF THE EVENTS 37

TAB. 4.3 - SENSITIVITY CALCULATIONS 42

TAB. 4.4 - SUMMARY OF RESULTS OBTAINED BY APPLICATION OF FFT METHOD ON ALL

TRANSIENT 48

TAB. 4.5 - SUMMARY OF RESULTS OBTAINED BY APPLICATION OF FFT METHOD (0-4900

S) 49

VI
1. INTRODUCTION

The present work deals with the post-test analysis of the test BL-06 realized at

LOBI/MOD2 facility.

The test BL-06 was defined to simulate the phenomena characterized by a cold leg

small (1%) break LOCA. The programmatic objectives consisted in the acquisition of

the experimental data for the study of the physical phenomena and for the assessment

of the predictive capabilities of system codes used in the safety evaluation of LWR.

In particular test BL-06 was projected to analyze the influence of main coolant pumps

operation mode during small break LOCAs in PWRs. The operational procedures

foresee that for accidents of this type the arrest of pumps happens following the scram

signal and therefore within a few seconds after the accidental event. In test BL-06 the

pump trip was delayed and was generated on high heater rods surface temperature.

Phenomena of great importance analyzed during the evolution of test BL-06 included

among others:

- depletion and distribution of primary system mass;

- performance of the pumps in presence of two-phase flow;

- phase separation in the core region;

- break mass flowrate;

- core uncover and dryout;

- accumulator performance and core reflood.

LOBI/MOD2 test BL-12 was the reference test case for test BL-06 with respect to

main coolant pump operation mode. In fact test BL-06 was specified preserving as

much as possible, the initial and boundary conditions adopted in test BL-12 (which

mainly differed in the early trip of the main coolant pumps). In order to ensure the

occurrence of core dryout and the influence of main coolant pump operation, both tests

were specified assuming the high pressure safety system not available.

The principal purpose of this report is to evaluate the performances of the code

Relap5/Mod3.2.1 in the simulation of this accident.

The performance assessment and validation of large thermal-hydraulic codes and the

accuracy evaluation of the safety margins for Light Water Reactors (LWR) are among

the objectives of international cooperative programs, such as the Code Applications

and Maintenance Program (CAMP).

Introduction-1
2. DESCRIPTION OF THE EXPERIMENT

2.1 DESCRIPTION OF THE LOBI FACILITY

The LOBI/MOD2 was a high pressure integral system test facility and

represented, at approximately 1:712 scale, a four-loop PWR, (1300 MWe, KWU

Design). This facility was designed and realized at the Joint Research Centre (JRC) of

the European Community in Ispra.

The purpose of the LOBI/MOD2 facility was to evaluate the performances of the safety

systems of nuclear power plant in transient and accidental conditions.

-A sketch of the primary and secondary circuit of the facility is reported in Fig. 2.1 and

2.2 respectively.

LOBI/MOD2 primary circuit had two loops, the intact loop representing three loops of

the reference NPP and the broken loop representing the loop of the NPP where was

located the break.

Each primary loop contained a main coolant circulation pump (MCP) and a steam

generator (SG). The two pumps were equal but they ran at different speed to achieve

rightly scaled flowrates.

The simulated core consisted of a directly electrically heated 64 rod bundle arranged in

a 8 x 8 square matrix inside the pressure vessel; nominal heating power was 5.3 MW.

Each heater rod consisted of an internally pressurized hollow tube with an active

heated length of 3.9 m. The wall thickness was varied in 5 steps to provide a cosine

shaped axial heat flux distribution.

The primary cooling system operated at normal PWR conditions: approximately 15.8

MPa and 567-599 K pressure and temperature, respectively.

Each steam generator contained components such as inverted U-tubes, an annular

downcomer and coarse and fine steam separators modelling the geometry of the

reference plant. The exchanged power in the two steam generators, at the nominal

operating conditions, was of 1.32 MW (8 U-tubes) and 3.96 MW (24 U-tubes) for the

broken and the intact loop respectively.

Heat was removed from the primary loops by the secondary cooling system containing

a condenser and a cooler, the main feedwater pump and the auxiliary feedwater system.

The normal operating conditions of the secondary cooling system were approximately

483 K feedwater temperature and 6.45 MPa pressure.

The pressurizer design was similar to that of the reference plant. It was scaled in

volume but not in height. The pressurizer surgeline was connectable to either the intact

or broken loop. Simulation of power operated relief valves (PORVs) was provided in

the pressurizer relief line.

The LOBI/MOD2 Emergency Core Cooling System (ECCS) included: the High

Pressure Injection System (HPIS), the Low Pressure Injection System (LPIS) and the

Accumulator (ACC).

Description of the experiment-2
1 M

IPI

Fig. 2.1 : LOBI/MOD2 facility - prmr circuit

Description of the experiment-3
- Tn

from

•Storage Tank

Fig. 2.2: LOBI/MOD2 facility - secondary circuit

Description of the experiment-4
A process control system allowed the simulation of the main coolant pump hydraulic

behavior (speed control), of the decay and stored heat (power control to the electrically

heated rod), of the high pressure injection system and auxiliary feedwater system mass

flow rates.

Table 2.1 summarizes the principal characteristics of the facility.

CHARACTERISTIC VALUE

Nominal pressurizer pressure (MPa) 15.4

Core active fluid temperature (K) 599

Number of fuel rods 64

Core active height (m) 3.9

Fluid volume (V) (m3) 0.64

Core power (P) (MW) 5.28

Core inlet flow (kg/s) 0.026

Hot leg diameter (Intact loop) (m) 7.37102

Hot leg diameter (Broken loop) (m) 4.60-10-2

Hot leg length (Intact loop) (m) 5.475

Hot leg length (Broken loop) (m) 5.511

Number of loops 2

Number of tubes in steam generator (IL) 24

Number of tubes in steam generator (BL) 8

Tab. 2.1 - Significant parameters of the LOBI/MOD2 facility

The scaling criteria used in the LOBI/MOD2 facility brought to the following

characteristics:

1) volume, primary circuit coolant mass flow and power input were scaled down from

the reference reactor values by a factor of 712;

2) to preserve the gravitational effects, the absolute heights and the relative elevations

of the different system components were kept at reactors values with the exception

of pressurizer which was shorter, in order to preserve the scaling ratio and to maintain, at the same time, an acceptable flow area.

The LOBI test facility was initially designed to simulate the thermal-hydraulic

scenarios in a pressurized water reactor during the large break loss-of-coolant

accidents. Subsequent modifications to the original configuration made LOBI/MOD2

facility able to simulate a wide variety of small break LOCA and special transient.

Description of the experiment-5
2.2 SYSTEM CONFIGURATIONAND TEST OVERVIEW

To realize the test BL-06, the LOBI/MOD2 test facility was predisposed in the

basic configuration for cold leg break loss-of-coolant experiments.

Geometrical and operational data of certain subsystems required to meet test specific

objectives are summarized in Tab. 2.2.

Break - Cold leg break between MCP and

- Position vessel inlet

- Size - Break orifice 3.0 mm

- Type - Communicative, side oriented

Upper head Connected to upper plenum and upper

downcomer

Pressurizer Connected to intact loop hot leg

PORV

On-Off valve - orifice 2.74 mm

DN-1 5 Control valve

Accumulator Injection System

- Injection position - Intact Loop cold leg

- Injection line orifice - 3.5 mm

- Liquid volume - 0.137 m3

- Gas volume - 0.143m 3

Low Pressure Injection System

- Injection position - Intact Loop cold leg

- Injection rate - 0.4 kg/s

Main Coolant Pump

- Seal water drainage - Before rupture: from upper plenum

- After rupture: from lower plenum

- Locked rotor resistance simulator - Intact Loop: non used

- Broken Loop: inserted 4s after

pump zero speed

Secondary side

- SRV set point - to follow BL-12 secondary side

pressure curve

Tab. 2.2 - System configuration for the test BL-06

From the table, it should be noticed that some components, although not reactor

typical, were anyway required for either operational reasons or simulation

requirements.

Description of the experiment-6
The heat loss of the LOBI/MOD2 test facility in nominal conditions are given in Tab.

2.3. The operational set points are listed in Tab. 2.4.

Primary System Heat Loss

- Intact loop 29 kW

- Broken loop 29 kW

- Vessel and upper head 27 kW

- Pressurizer 2 kW

87 kW

Secondary System Heat Loss

- Intact loop 6.8 kW

- Brokenloop 5 kW

- Steam lines 3.2 kW

15.0 kW

Tab. 2.3 - System heat loss for test BL-06

ACTION REFERENCE SET POINT

break opening time 0.s

scram up. head press. (pr21) <13.1 MPa

AUXFEED initiation time after scram 72s

HPIS unavailable

MCP trip Rod clad temp (K) >685

end MCP coast down time 2s

ACC actuated time after pump stop 50s

I * PRZ PORV opening rod clad temp after ACC quenching 646 K

20 PRZ PORV opening rod clad temp after ACC quenching 704 K

LPIS initiation rod clad temp after ACC quenching 745 K

PRZ PORVs closing time after LPIS on 25s

Tab. 2.4 - Operational set points

The test was initiated by opening the break valve located in the cold leg of the broken

loop. Because of mass loss through the break, the primary system depressurized.

Description of the experiment-7
When the primary pressure dropped to 13.1 MPa, the scram signal was generated.

Thereafter the secondary system was isolated and the core power started decreasing

based on a defined decay curve. The auxiliary feedwater was injected into the

secondary side 72 s after scram signal.

The main coolant pumps were kept running at the nominal speed until the core

temperature reached 685 K. Then they started to coast down and after 2 s the pumps

speed was zero.

The accumulator injection started 50 s after the pump stop (primary system pressure

was about 4.1 MPa). When the available mass (about 125 kg) was depleted, the

accumulator injection terminated.

Then, due to the mass still loosing from the primary system, the rod temperature

reached again values of the order of 643 K. Since the pressure in the primary system

was too high to allow the injection of the low pressure injection systems (LPIS), the

primary system was depressurized through the PORV using also an additional safety

valve. Nevertheless the relief capability was not sufficient to depressurize the RCS up

to P=I MPa, and the LPIS was anyway activated at P=l.8 MPa in order to prevent

excessive core temperature rise. The test finished at t=6900 s after that the emergency

system LPIS had quenched the core.

The specified system initial conditions are listed in Tab. 2.5.

Description of the experiment-8
Experimental Units

Primary System

Upper Plenum Pressure 15.87 MPa

Core Power 5.31 MW

Intact Loop

- Mass flow 21.0 kg/s

- Vessel Inlet Temperature 569 K

- Vessel Outlet Temperature 601 K

Broken Loop

- Mass flow 7.2 kg/s

- Vessel Inlet Temperature 570 K

- Vessel Outlet Temperature 603 K

Pressurizer

- Water Level c. 5.1 m

- Temperature 621 K

MCP Seal Water Injection

- Intact loop 0.01 kg/s

- Broken loop 0.005 kg/s

- Temperature c. 303 K

Secondary System

SG Intact Loop

- Steam dome pressure 6.46 MPa

- Mass Flow 2.1 kg/s

- Inlet Temperature 486 K

- Outlet Temperature 553 K

- Downcomer Water Level 8.0 m

- Recirculation ratio c. 6.4

SG Broken Loop

- Steam dome pressure 6.45 MPa

- Mass flow 0.75 kg/s

- Inlet Temperature 482 K

- Outlet Temperature 553 K

- Downcomer Water Level 8.34 m

- Recirculation ratio c. 4.3

Tab. 2.5 - Operational initial conditions for the test BL-06

Description of the experiment-9

2.3 ANAL YSIS OF THE TESTDA TA

From a phenomenological point of view the accident can be divided in three

phase:

Phase 1: from the opening of the break to the pumps arrest;

Phase 2: from the pumps arrest to the end of the accumulator injection;

Phase 3: from the end of the accumulator injection to the final core rewetting.

a) Phase 1 : From the opening of the break to the pumps arrest (0-2790 s);

The initial period of the transient is characterized by a fast depressurization of

the primary system (Fig. 2.3) due to mass loss through the break (Fig. 2.4). At about

t--36 s the primary pressure becomes lower than P--13.1 MPa and the scram is actuated

and the MSIVs are closed. From that instant the generated power follows the decay

heat curve.

In order to have boundary conditions as close as possible to LOBI test BL-12 the

secondary pressure was regulated through the relief valves.

The fast depressurization of the primary system, after the break opening, is reduced

when saturation conditions are reached in the hot leg. The primary pressure restarts

decreasing when the core power starts to decrease due to the scram.

About 30 s after the scram signal, the pressure is governed by the behavior of the

secondary side pressure, since the power lost through the break is not sufficient to

remove the residual heat produced in the core. As a consequence, the primary and

secondary side are coupled for a while (Fig. 2.5). When the tubes of the SG are empty

the heat exchange between primary and secondary side is negligible and the related

pressures assume independent trends.

The behavior of the main coolant pumps is of particular interest for this test. In Figs.

2.6 e 2.7 is presented the pump head and void fr-action at the inlet of the main coolant

pumps. It is clear from those figures that after 700 s the pumps have almost completely

lost their efficiency.

The loss. of efficiency is connected with the presence of the two-phase flow at the

pump inlet. For the intact loop the degradation begins when the inlet void fraction is

about 0. 1 at about 120 s, while the complete degradation occurs when the void fraction

is about 0.5. In the broken loop the degradation begins when the void fraction is about

0. 18 but the diminution of efficiency is much greater.

Even if the efficiency is reduced, the pump of the intact loop causes a flow sufficiently

high that determines an accumulation of liquid at the entry of the steam generator

(CCFL) (Fig. 2.8); this is not occurred in the broken ioop because of the stronger pump

degradation. That means that the two priar circuits have an asymmetrical behavior

(Fig. 2.9).

The decreasing rate of the collapsed liquid level is slow until t--570 s (Fig. 2.10). At

that time the pump degradation occurs and the collapsed liquid level has a fast

reduction, but it remains above the top of the active fuel zone.

Description of the experiment- II
The core dryout is determined by the mixture level in the core. In Fig. 2.10 is possible

to observe that as soon as the mixture level is become lower then the top of active fuel

zone, the dryout is being occurred.

The Figs. 2.11 and 2.12 show the behavior of rod clad temperature at different levels.

It is possible to note that:

- the dryout begins before the arrest of the pumps;

- the thermal behavior is asymmetrical, in fact the heater rods placed at the same level

don't reach the dryout in the same instant;

- the core uncover mode is top-down; in fact in the higher levels the excursion of

temperature begins at about t=-2400 s while in the lower levels it begins at about

t-2800 s;

- the bottom part of the core doesn't experiment dryout (Fig. 2.12).

b) Phase 2: From the pumps stop to the end of the accumulator injection (2790-

3850 s)

The arrest of the main coolant pumps determines a redistribution of primary

system mass inventory. In particular the core mixture level decreases about 1 m (Fig.

2.10), while the downcomer collapsed level immediately increases (Fig. 2.13).

Besides, when the pumps are stopped, in the intact loop the water located at the entry

of steam generator flows back to the core, determining a temporary quenching of the

related side of the core (Figs. 2.14, 2.15). The central fuel bundle shows a reduction at

the core heat-up rate, but it is not quenched, while in the broken loop side the clad

temperature continues to increase, and even at a faster rate (Figs. 2.14, 2.15).

Due to the pumps stop, the primary pressure increases at first, then restarts decreasing

because of primary mass loss (Fig. 2.5). At t=2840 s the primary pressure becomes

4.12 MPa and the accumulator is allowed to inject into the primary system.

As a consequence of the accumulator injection, the primary side pressure decreases

(Fig 2.5), the primary system mass inventory increases (Fig. 2.16) and, in particular,

the core level increases determining core rewetting at t=3050 s. The core rewetting

occurs from the lower part to the high part (Fig. 2.14).

c) Phase 3: From the end of the accumulator injection to the final core

rewetting (3850-6900 s)

When the accumulator is stopped the primary system restarts pressurizing (Fig.

2.5) because the energy lost through the break is not sufficient to compensate the net

input power into the RCS.

However, due to the loss of inventory, the core level restarts to decrease again (Fig.

2.10) and at t=5500 s the core experiments a second core dryout.

When the rod clad temperature reaches 623 K (Fig. 2.17) a valve simulating three

PORVs is opened in the pressurizer in order to cause a depressurization of RCS and

allow the intervention of the LPIS at P=-l MPa. Being the depressurization rate too low

(Fig. 2.18) it has been necessary to modify the operational procedure and to open

another valve.

Description of the experiment-12
The combined action of the two valves allows a faster depressurization of the primary

system. At t=6382 s, with a primary pressure P=1.7 MPa, the LPIS is activated because

the temperature of the heater rods has reached 745 K. The intervention of the LPIS

determines the core quenching and therefore the end of the test.

Description of the experiment-13
-.04-24.1S

18.0

16.0

14.0

~ 12.0

S

o 10.0

A.

8.0

4.0 I

-400.0 -300.0 -200.0 -100.0 0 100.0 200.0 300.0 400.0 500.0 600.0

rime (s)

Fig. 2.3 : Primary and secondary pressure

WIGWatZ4 - 0-24-19M

.80

.70

.60

.50

- .40

.30

.20

.10

0

-.10

-100

MX V2=OIFF(VI)

0. 0 1000. 2000. 3000. 4000. 5000. 6000.

Time (s)

7000.

Fig. 24: Break mass flow rate

Description of the experiment-14
VWmOW24 -04-24-IM9

U

U

S

S

a.

20.0

18.0

16.0

14.0

12.0

10.0

8.0

6.0

4.0

2.0

0

-1000. 0 1000. 2000. 3000. 4000. 5000. 6000. 7000.

Time (s)

Fig. 2.5 : Primary and secondary pressure

YbQUI 14-04-24-.1

C

1.20

1.00

.80

.60

.4O

.20

0

100

so

60

40

20 .•

0

-40

-200.

_I .60

0 200. 400. 600. £00. 1000.

Time (s)

Fig. 2.6: Void fraction at pump inlet and pump head (IL)

Description of the experiment- 15
W 2.4d U4- 04-24-1990

1.20

1.00

.80

-O .40

.4

80.0

70.0

60.0

50.0

40.0

30.0 •

20.0

10.0

0

-10.0

.20

-.20

400.

Time (s)

Fig. 2.7: Void fraction at pump-inlet and pump head (BL)

WnGrOW24 -04-4-.19

.03~

.02

.02

= .01

CL 1

o .01 -

0

-.01-

-1000. 0 1000. 2000. 3000. 4000. 5000. 6000. 7000.

Time (s)

Fig. 2.8: Pressure difference at steam generator inlet (IL)

Description of the experiment- 16
WWOM214.04.24.1gON

U

CL

.03

.03

.02

.02

.01

.01

XXX EL06 PD80AB41

PUM of

-I-..- I

0

-.01 .

-1000. 0 1000. 2000. 3000. 4000. 5000. 6000. 7000.

Time (s)

Fig. 2.9: Pressure difference at steam generator inlet (BL)

tqnmI2A;L.O4-4-19g8

10.00 I..-.1 1 I I I I I I I

9.00 V I Mixture

.00 IW 7.00

S 6.00

5.00

4.00

3.00

Time (s)

Fig. 2.10 : Mixture and collapsed level in the riser of the vessel

Description of the experiment-17
WwGnu 14 - 04-24-194

500

450 YYY ELO THMEANOS PUMPs off Y"

ZZZ EL06 THMEAN09

VV ELO0 THMEAN1O

JJJ EL06 THMEAN11 ,

400 HHH EL06 THMEAN12

* 350 -,

300

250

200r

2200. 2400. 2600. 2800. 3000. 3200. 3400.

Time (s)

Fig. 2.11 Heater rod temperature of the superior levels (1ev. 12-7)

WrO~• 2. 04-24-19@8

420

400

XXX EL06 THMEANOI

380 YYY EL06 THMEAN02

ZZZ ELO6 THMEAN03

VWV EL06 THMEAN04

360 - JJJ EL06 THMEAN05

30- HHH EL06 THMEANO6

2340

220

2600.0 2650.0 2700.0 2750.0 2800.0 2850.0 2900.0 2950.0 3000.0 3050.0 3100.0

Time (3)

Fig. 2.12": Heater rod temperature of the inferior levels (lev. 6-1)

Description of the experiment-I 8
W .4 - 04-4-loge

T

T

10.00

9.00 -

8.00 ;

7.00 -

6.00 .

5.00

4.00

3.00

2.00

1.00 -

-1000. 0 1000. 2000. 3000. 4000. 5000. 6000. 7000.

Time (s)

Fig. 2.13 : Collapsed level in the downcomer

W"24 - 04--11

L

E

A

S00

450

400

350

300

250

200 1

2000. 3600.

Time (s)

Fig. 2.14 : Heater rod temperature levels 9 and 10

Description of the experiment- 19
VwMn4W 2.4 - Of-24 IM

500

450

0=

4

400

350

300

250F

2000. 2200. 2400. 26M0.

Fig. 2.15: Heater rod temperature level 11

Time (s)

VV,(24 - Oi-2-tM

550

500

450

400

350.

300

250

200

ISO

150 50C

- J XXX ELO6 CIPRIM

AC of

00. 0 1000. 2000. 3000.

Time (s)

4000. 5000. 6000. 7000.

Fig. 2.16: Primary system mass inventory

Description of the experiment-20
0 *14 -04--7.-108

500

E

A

6800.

Time (s)

Fig. 2.17: Heater rod temperature of the superior levels (lev. 12-7)

1nrrfI4 - 04-4?-10

a

2

B,

2.60

2AO

220

2.00

1.0

1.60

1.40

1.20

1.00

jo

22.5

20.0

17.5

15.0

12.5

10.0

-7.5

LO

2.5

0

--2.

7000.

E0

6200.

Time (s)

Fig. 2.18: Primary system pressure and PORV volumetric flow

Description of the experiment-21
3. ADOPTED CODE AND NODALIZATION

3.1 CODE RELAPS/MOD3.2

The Relap5/Mod3.2 is a transient analysis code for complex thermal-hydraulic

systems. The fluid and energy flow paths are approximated by a one-dimensional

stream tube and conduction model. The code contains models peculiar to western light

water reactors. In particular the neutronics is simulated by a point kinetics model; other

specific models are related to pump turbines, jet pumps, valves, accumulator and

separator; the reactor control system can also be simulated.

The code is based on a non-homogeneous non-equilibrium set of 6 partial derivative

balance equations for the steam and liquid phases. A non-condensable component in

the steam phase and a non-volatile component (boron) in the liquid phase are also

treated by the code.

A fast, partially implicit numeric scheme is used to solve the equation inside control

volumes connected by junctions.

A direction, associated to the control volume, it's positive from the inlet to the outlet.

The fluid scalar properties such as pressure, energy, density, and void fraction are

represented by the average fluid conditions and are considered located at the control

volume center. The fluid vector properties, i.e. velocities, are located at the junctions

and are associated with mass and energy flow between control volumes.

The heat flow is 1-D modeled. The heat conductor or heat structure is thermally

connected to the hydrodynamic control volumes through a heat flux . The heat

structures are used to simulate pipe walls, heater elements, nuclear fuel pins and heat

exchanger surfaces. A specialized two-dimensional heat conduction solution method

with an automatic fine mesh rezoning is used for low pressure reflood.

The kinetics model consists of a system of ordinary differential equations that are

integrated using a modified Runge-Kutta technique. The feedback effects of fuel

temperature, moderator density and boron concentration in the moderator are evaluated

using averages over the hydrodynamic control volumes and associated heat structures

that represent the core. The averages are weighted averages that are established a priori

such that they are representative of the effects on total core power.

Certain non linear or multidimensional effects due to spatial variations of the feedback

parameters cannot be accounted for with such a model. Thus, the user must judge

whether or not the model is a reasonable approximation to the physical situation being

modeled.

Adopted code and nodalization-22
3.2 DESCRIPTION OF THE ADOPTED NODALIZATION

The Relap5/Mod3.2.1 LOBI/MOD2 nodalization reproduces in detail the

primary and secondary systems, it is shown in Fig. 3.1.

The correspondence between the zones of the facility and the nodes of the code model

and relevant input values related to the hydraulic volumes are summarized in Tab. 3.1.

In the Tab. 3.2 are summarized the relevant input value related to the connecting

junctions of the nodalization.

The following items can be added to clarify Fig. 3.1 and the mentioned tables:

- the nodes 100, 105, 110 represent the intact loop cold leg which is connected with the

steam generator through the junction 115 and with the vessel through the junction

350-02, the equivalent for the broken loop are the nodes 200, 203, 206 and the

junctions 208 and 350-03. Besides to the node 105 is also connected the pressurizer

surge line through the junction 105-03;

- the nodes 120 and 210 represent the steam generator U-tubes of the intact and broken

loop respectively. The number of the volumes of the node 120 it is double in

comparison to that of the node 210 for allowing a more accurate heat exchange

between primary and secondary side;

- the nodes 130 and 133 represent the loop seal of the intact loop, the correspondent for

the broken loop are the nodes 220 and 223;

- the two pumps are simulated by the nodes 135 and 225;

- the intact loop cold leg is simulated by nodes 137,140,145 and is connected to the

vessel through the junction 305-01, the equivalent for the broken loop are the nodes

230,240,250,260 and the junction 305-02;

- the vessel has been divided into the five zones:

1) downcomer (simulated by the nodes 300, 305, 3 10) connected to the upper

head through the branch 363;

2) lower plenum (simulated by the nodes 315 and 320) connected to the

downcomer and to the core;

3) core region (represented by the nodes 325 and 335; among these, the nodes

335-01 to 335-06 constitute the active region). The junction 340 connects the

core to the upper plenum;

4) upper plenum (represented by the nodes 345, 350, 355) connected to the upper

head through the branch 380;

5) upper head (simulated by the volumes 370, 375);

- the junctions 352 and 353 represent the bypass flow between downcomer and upper

plenum. They respectively represent the two holes of 5 mm diameter each connecting

Adopted code and nodalization-23
downcomer and upper plenum at the uppermost elevation and the gap around hot leg

nozzles;

- the two accumulators and the respective feed lines are represented by the nodes

numbered with the seven hundred; They are connected with the cold legs of the two

intact loops;

- in the broken loop the pump locked-rotor resistance simulator is represented through

the valve 235;

- the time dependent volumes 226, 136, 360 and 361 connected with the primary

system through the time dependent junctions 224, 134, 358 and 359, simulate the two

pump seal cooling system. During the steady state the fraction of seal water entering

the primary system is drained from the upper plenum, while during the transient

period is drained from the lower plenum;

- the pressurizer and his surge line is represented by the nodes 409, 410, 420, 400. An

additional system can be noted in the pressurizer nodalization, it allows the primary

side pressure to remain constant in the steady-state period and is represented by the

time dependent volume 430 and related trip valve 425;

- the two valves 440 and 441 and the related time dependent volumes 910 and 901,

connected to the top of the pressurizer, simulate the PORV system;

-the two steam generators have similar secondary side nodalization even if in the intact

loop the number of the volumes of the node that represent the zone including the Utubes is double in comparison to that of the broken loop. Each steam generator can be

divided in five zones:

1) the downcomer (simulated by the nodes 510, 500, 555 for the intact loop and

by the nodes 610, 600, 655 for the broken loop);

2) the riser zone including the spacer grids (represented by the volumes 530 and

545 for the intact loop and by the volumes 630, 645 for the broken loop);

3) the top of the steam generator including the separator, the dryer and the steam

dome region (represented from the volumes 550, 552, 560 for the intact loop

and from the volumes 650, 652, 660 for the broken loop). The two

separators are necessary in the code model in order to achieve quality equal

to one in the steam dome;

4) the steam line downstream the dome of each steam generator (simulated

through the volumes 564 for the intact and 664 for the broken). These two

volumes are connected to the volume 565 which in it turn is connected to the

condenser, vol. 582, through the valve 580;

5) the feedwater line connected to the top of downcomer (simulated with the

time dependent junction 570 and the time dependent volume 572);

- connected to the steam generator there are different control volumes:

a) auxiliary feed water: TDV 576 (IL) and 676 (BL) and TDJ 574 (IL) and 674

(BL);

Adopted code and nodalization-24
b) the TDVs 567 (IL) and 667 (BL) together with the valves 563 (IL) and 663

(BL) condition the pressure in the secondary side to have the same pressure of

the test BL-12;

- the active structures that simulate the hot rods are divided in 5 radial meshes.

Adopted code and nodalization-25
660

:3-1

65 - -, -

i, . 0

91 i.2K0 [%'1 90 

67 5747

75ý 710'Li 7 0~67 721'140

j.45

10 :03

4 7724 73 0 3 274

300: 15 

020 5

53 220 22 SOS~60 ,5 3 7 

7. 4 :

;-I 1370 .2

SNGUU 4 

7 ep -tKJ 3 4

LLBI/MLIL' -I< LR1VLV

Fig.3.1 ela5I~o3.21 noaliatio ofLOBIMOD faclit

Adopted code and nodalization-26
node volume height/length type zone

(mIx103) (M)

INTACT LOOP

100-01 3.1398 0.736 snglvol

105-01 3.1782 0.745 branch hot leg

110-01 6.8256 1.6 pipe

110-02 2.679 0.628

120-01 19.28 1.763 pipe

120-02 9.932 0.306

120-03...06 1.0681 0.1475

120-07...10 0.90516 0.125

120-11...14 1.8103 0.25

120-15...22 3.6206 0.5

120-23,24 7.3487 1.015 primary side

120-25...32 3.6206 0.5 steam

120-33...36 1.8103 0.25 generator

120-37...40 0.90516 0.125

120-41...44 1.0681 0.1475

120-45 9.932 0.306

120-46 19.28 1.763

130-01 4.394 1.03 pipe

130-02 3.2806 0.769

130-03 6.8725 1.611 loop seal

130-04 2.6662 0.625

130-05 6.8725 1.611

133-01 3.2806 0.769 branch

135-01 1.9999 0.6027 pump pump

136-01 1 m3 1 tmdpvol seal water

138-01 1.5 5.0 branch

137-01 3.1526 0.739 branch

140-01,02 4.9571 1.162 pipe cold leg

145-01 3.5877 0.841 branch

BROKEN LOOP

200-01 1.2502 0.749 snglvol

203-01 1.4438 0.865 branch

206-01 1.1116 0.666 pipe hot leg

206-02 1.1116 0.666

206-03 1.145 0.686

210-01 6.9228 1.884 pipe

210-02 2.7009 0.192

Tab. 3.1 - Details of nodes geometry in the Relap5 nodalization - correspondences

between code nodes and hydraulic zones (cont'ed)

Adopted code and nodalization-27
210-03,04 0.67586 0.28

210-05,06 0.60345 0.25

210-07,08 1.2069 0.5

210-09...12 2.4138 1.0

210-13,14 2.4435 1.012

210-15...18 2.4138 1.0

210-19,20 1.2069 0.5

210-21,22 0.60345 0.25

210-23,24 0.67586 0.28

210-25 2.7009 0.192

primary side

steam

generator

210-26 6.9228 1.884

220-01 1.7392 1.042 pipe

220-02 1.9245 1.153

220-03 1.2368 0.741

220-04 1.2218 0.732 loop seal

220-05 1.2368 0.741

223-01 1.9245 1.153 branch

225-01 2.000935 0.603 pump pump

226-01 1 m3 1.0 tmdpvol seal water

228-01 1.5 5.0 branch

230-01 1.4354 0.86 branch

240-01 2.1081 1.263 branch cold leg

250-01 1.5189 0.91 snglvol

260-01 1.175 0.704 branch

PRESSURE VESSEL

300-01 3.5627 0.315 branch

305-01 5.508 0.487 branch

310-01,02 6.786 0.6 annulus

310-03 8.3694 0.74

310-04 7.4985 0.663 downcomer

310-05,06 9.8963 0.875 region

310-07 7.4985 0.663

310-08 6.9217 0.612

310-09 4.4109 0.39

310-10 6.967 0.616

315-01 13.379 0.175 branch lower plenum

320-01 13.379 0.175 branch

325-01 14.817 0.616 pipe

325-02 8.9813 0.39

335-01 4.9665 0.612 pipe core region

335-02 5.3804 0.663

335-03,04 7.1008 0.875

335-05 5.3804 0.663

Adopted code and nodalization-28
Tab. 3.1 - Details of nodes geometry in the Relap5 nodalization - correspondences

between code nodes and hydraulic zones (cont'ed)

335-06 4.9665 0.74 core region

345-01,02 14.989 0.6 pipe

350-01 12.166 0.487 branch upper plenum

355-01 7.8693 0.315 branch

360-01 0.5 m3 0.5 tmdpvol seal water

361-01 0.5 m3 0.5 tmdpvol drain

363-01 0.44485 1.416 branch

365-01 0.99557 3.169 branch

370-01,02 9.67 0.855 pipe upper head

375-01 9.67 0.855 branch

380-01 0.44485 1.416 branch

PRESSURIZER

400-01 0.23675 1.73 pipe

400-02 0.35581 2.6 surge line

400-03 0.38318 2.8

409-01 10.327 0.898 branch

410-01 10.92 0.9 pipe pressurizer

410-02...06 10.939 0.9 vessel

410-07 4.6636 0.585

420-01 6.3634 0.79 branch pressurizer

430-01 11.5 1.0 tmdpvol bottom

901-01 1 m3 1.0 tmdpvol PORVs

910-01 1 m3 1.0 tmdpvol

SECONDARY SIDE

STEAM GENERATOR INTACT LOOP

500-01 16.755 1.402 branch

510-01...08 5.9755 0.5 annulus

510-09... 12 2.9877 0.25 downcomer

510-13...20 1.4939 0.125

530-01...08 3.7381 0.125 pipe

530-09... 12 7.4763 0.25 riser section

530-13...20 14.953 0.5

545-01 62.848 1.402 branch

550-01 34.766 1.105 snglvol upper plenum

552-01 185.6 1.1 branch separator

560-01 101.6 0.593 branch steam dome

564-01 24.232 6.5 snglvol

565-01 9.0 2.0 branch steam line

582-01 0.5 m3 0.5 tmdpvol

567-01 0.5 m3 0.5 tmdpvol

572-01 0.5 m3 0.5 tmdpvol main feedwater

Adopted code and nodalization-29
Tab. 3.1 - Details of nodes geometry in the Relap5 nodalization - correspondences

between code nodes and hydraulic zones (cont'ed)

576-01 0.5 m3 0.5 tmdpvol auxiliary

I I1 I I feedwater

STEAM GENERATOR BROKEN LOOP

600-01 5.1618 1.304 branch downcomer

610-01 ...04 3.9584 1.0 annulus

610-05,06 1.9792 0.5 downcomer

610-07...10 0.9896 0.25

655-01 37.8 1.128 snglvol

630-01...01 2.3737 0.25 pipe

630-05,06 4.7474 0.5 riser section

630-07...10 9.4947 1.0

645-01 23.064 1.304 branch

650-01 12.309 1.128 snglvol upper plenum

652-01 59.052 1.1 branch separator

660-01 38.991 0.681 branch steam dome

664-01 8.4622 5.8 snglvol steam line

667-01 0.5 mr 0.5 tmdpvol

672-01 0.5 m' 0.5 tmdpvol main feedwater

676-01 0.5 mr 0.5 tmdpvol auxiliary

feedwater

ACCUMULATOR

710-01 267.0568 5.505 accumulator accumulator

720-01 0.4831 1.0 branch dividing branch

724-01 1.8551 3.84 pipe intact loop

724-02 0.71016 1.47 hot leg

728-01 1.8696 3.87 pipe feed line

734-01 1.8551 3.84 pipe intact loop

734-02 0.628 1.3 cold leg

738-01 1.5725 3.255 pipe feed line

750-01 94.3761 4.924 accumulator accumulator

760-01 0.4022 2.0 branch dividing

branch

764-01 0.54257 2.698 pipe broken loop

764-02 0.17134 0.852 hot leg

768-01 0.37606 1.87 pipe feed line

768-02 0.13077 1.845

774-01 0.54257 2.698 pipe broken loop

774-02 0.17134 0.852 cold leg

778-01 0.57716 2.87 pipe feed line

800-01 1 m3 1.0 tmdpvol LPIS

Adopted code and nodalization-30
900-01 1 m, 1.0 tmdpvol BREAK

Tab. 3.1 - Details of nodes geometry in the Relap5 nodalization - correspondences

between code nodes and hydraulic zones

Adopted code and nodalization-31
SIGNIFICANT FLOW AREA kD KR POSITION

JUNCTION m2

115 42.66e-2 0.0 0.0 SG inlet IL

125 42.66e-2 0.0 0.0 SG suction leg IL

134 3.0e-4 seal water TDJ IL

208 16.69le-4 0.35 0.16 SG inlet BL

215 0.7288e-3 0.0 0.0 SG suction leg BL

235 16.691 e-4 0.3 0.3 penta valve

224 3.0e-4 seal water TDJ BL

305-01 42.66e-2 3.55 3.55 core inlet IL

305-02 16.691e-4 3.24 3.24 core inlet BL

350-02 42.66e-2 0.94 0.94 core outlet IL

350-03 16.691e-4 1.54 1.54 core outlet BL

352 1.13le-2 bypass

353 1.13le-2 bypass

358 6.0e-4 exit seal water

359 6.0e-4

440 5.896e-6 1.5 1.5 PORV

441 4.3043e-6 1.5 1.5 PORV

563 1.5e-3 1.5 1.5 relief valve

570 1.5e-3 main feedwater inlet valve

574 1.4589e-3 aux. feedwater inlet junction

580 4.5e-3 0.0 0.0 SG common discharge valve

663 5.0e-4 1.5 1.5 relief valve

670 6.0e-4 main feedwater inlet valve

674 6.3794e-4 aux. feedwater inlet junction

722 4.83le-4 0.0 0.0 IL acc. inje. valve to hot leg

732 9.616e-6 0.0 0.0 IL acc. inje. valve to cold leg

762 2.01 le-4 0.0 0.0 IL acc. inje. valve to hot leg

2.01 le-4 0.0 0.0 IL acc. inje. valve to cold leg

810 1.131e-4 LPIS

950 7.0686e-6 1.25 1.25 break valve

Tab. 3.2 - Details of relevant junction related parameters of nodalization

Adopted code and nodalization-32
4. ANALYSIS OF POST-TEST CALCULATIONS RESULTS

The post-test analysis has been characterized by the following three phases:

1) implementation of a model consistent with the geometric configuration of the

experimental facility and with the process data registered in the pre-test phase;

2) definition and execution of a reference calculation on the basis of the model

determined in the phase 1 and of the operational procedures that have characterized

the experiment;

3) perform sensitivity calculations relating to specific process parameters.

4.1 STEADY STATE CALCULATIONS (PHASE 1 OF THE POST-TEST

ANALYSIS)

The model of LOBI-MOD2 test facility used for the post-test calculation was

realized starting from an input deck provided by the JRC of Ispra [8] and adapting it to

the specific test characteristics.

A first series of calculations was aimed to reproduce, during the steady state, the

experimental values of the pressure in the primary and secondary circuits, the curve of

heating power, the mass flowrate in the intact and in the broken loop, etc..

In order to get this result the following operations have been performed on the model

provided by JRC-Ispra:

- insertion of TDV to force the primary and secondary pressures to the initial values

before the opening of the break valve;

- change of heat transfer coefficients to get the experimental heat losses of the primary

and secondary circuits (Tab. 2.3);

- modification of the electrical power control curve;

- modification of the pumps speed arrest curve;

- adaptation of the trips that control: the opening of the break valve, the intervention of

the scram, the intervention of the auxiliary. feedwater, the arrest of the pumps, the

intervention of the accumulator, the opening of the PORVs and finally the

intervention of the LPIS.

- activation of the CCFL option on the junction 115 and 208.

The steady state calculation results are shown in Tab. 4.1.

From the table results evident the general good agreement between the calculated and

experimental values.

Analysis of post-test calculations results-33
CALC. EXP.

Primary System

Upper Plenum Pressure (MPa) 15.9 15.87

Core Power (MW) 5.31 5.31

Intact Loop

- Mass flow (kg/s) 21.0 21.0

- Vessel Inlet Temperature (K) 567.2 569

- Vessel Outlet Temperature (K) 598.5 601

Broken Loop

- Mass flow (kg/s) 7.2 7.2

- Vessel Inlet Temperature (K) 567.3 570

- Vessel Outlet Temperature (K) 599.4 603

Pressurizer

- Water Level (M) 4.8 4.8

- Temperature (K) 617 621

MCP Seal Water Injection

- Intact loop (kg/s) 0.01237 0.01

- Broken loop (kg/s) 0.00724 0.005

- Temperature (K) 298 c. 303

Secondary System

SG Intact Loop

- Steam dome pressure (MPa) 6.49 6.46

- Mass Flow (kg/s) 2.07 2.1

- Inlet Temperature (K) 486 486

- Outlet Temperature (K) 553.7 553

- Downcomer Water Level (M) 6.6 8.0

Recirculation ratio 6.2 c. 6.4

- Heat exchange power (MW) 3.91 3.96

SG Broken Loop

- Steam dome pressure (MPa) 6.49 6.45

- Mass Flow (kg/s) 0.7 0.75

- Inlet Temperature (K) 482 482

- Outlet Temperature (K) 553.7 553

- Downcomer Water Level (i) 7.64 8.34

- Recirculation ratio 4.3 c. 4.3

- Heat exchange power (MW) 1.317 1.32

Tab. 4.1 - Comparison between experimental and calculated initial conditions

Analysis of post-test calculations results-34
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Analysis of post-test calculations results-35
4.2 REFERENCE CALCULA TION RESULTS

It is necessary to specify that in the post-test calculations the pressure of the

secondary side was forced by a TDV to the experimental values. Besides, during the

test, the secondary pressure was been conditioned (through an operational procedure)

in order to reproduce the recorded pressure in the test BL-12.

The comparison between the experimental and calculated chronology of the

principal events is shown in Tab. 4.2.

From the analysis of the Tab. 4.2, it can be observed:

- all the events have been reproduced in the simulation;

- in the simulation the significant events are slightly delayed in the first part of the test

(up to the accumulator emptying), while in the next phase they are anticipated;

- the timing of the events has been well reproduced; in fact the maximum difference

(around 300 s) it has registered at the time of the accumulator emptying, while for the

other events it is lower than fifty seconds.

Concerning the core power (Fig. 4.1) it was forced to the experimental values.

Besides, it has to be considered that the delay of the PORVs intervention is not due to a

bed PORVs action but it is due to the delay of the second dryout.

Aiming to make more meaningful the description of the results of the post-test

calculations, the transient has been divided into three phases as it has been done in the

paragraph 2.3.

CHRONOLOGY OF THE EVENTS:

EVENTS EXP (s) CALC (s)

Break valve open 0. 0.

SG isolation start 0. 0.

Break valve fully open 2 2

SCRAM 35.8 34.7

Emergency feedwater 107.8 106.7

10 dryout 2414 2506

Pump coast down (start) 2790 2820

ACC initiation 2840 2870

ACC empty 3850 4050

20 dryout 5400 5045

10 PRZ PORV opening 6035 5469

20 PRZ PORV opening 6262 5661

LPIS initiation 6382 5843

PRZ PORVs off 6466 5903

end of Test 6900 6900

Analysis of post-test calculations results-36
*Tab. 4.2 - Chronology of the events

4.2.1 Phase 1: From the opening of the break to the pumps arrest (0-2820 s)

The phenomena that have characterized this phase have been:

- loss to the break;

- primary side depressurization;

- pumps degradation;

- dryout;

- CCFL at the inlet of the intact loop steam generator.

All these phenomena have been well reproduced by the code simulation.

The major results of the most meaningful parameters will be shortly described in the

following:

Primary pressure

In Fig. 4.2 the calculated and experimental values of the primary pressure are

compared. A good agreement can be observed between the calculated and experimental

data; after the decoupling between primary and secondary pressures, the calculated data

show an higher primary side depressurization; this means that the combined effect of

the enthalpy lost through the break and the heat losses is overestimated in the

calculation. The depressurization rate remains constant for the remaining time.

Break flowrate

The break flowrate, Fig. 4.3, is well simulated except for the two-phase period where it

is underestimated; the comparison of the integral break flowrate (Fig. 4.4), shows much

better agreement.

Pumps degradation

Relating to the pumps performances, from Figs. 4.5 and 4.6, with a given 2phase

multiplier, it can be observed that both begins to lose their efficiency when the void

fraction is around 0.1 and their degradation is complete when the void fraction is equal

to 0.5. However, the pump of the broken loop degrades about 200 s before than in the

intact loop. In comparison to the experimental data the complete degradation of the

pumps is delayed of about 400 s (Fig. 4.7).

CCFL

The accumulation of mass at the inlet of the steam generator of the intact loop (Fig.

4.8) is well predicted by the code.

Fig. 4.9 shows that it doesn't happen in the broken loop. In that way the code has

reproduced the asymmetrical behavior of the primary circuits as recorded in the test.

Vessel levels

In Fig. 4.10 it is evident the effect of the pumps degradation on the collapsed liquid

level in the downcomer.

In particular, the increase of the collapsed liquid level corresponding to the pumps

degradation is qualitatively well reproduced by the code.

Analysis of post-test calculations results-37
The collapsed liquid level in the riser (Fig. 4.11) is well reproduced only after about

1500 s. Particularly in the first part of the transient (up to about 800 s) the simulation is

rather approximate.

Mass inventory

The primary side mass inventory (Fig. 4.12) is well predicted by the code except for

the first time period of the transient. Anyway in that time period the measured mass

inventory is not significant because experimental data are distorted by the high fluid

velocity.

Rod surface temperature

The rod surface temperature is shown in Figs. 4.13,4.14,4.15.

It is proper to observe that the code Relap5 it is not able to reproduce the asymmetrical

behavior of the rods at the same level because it is a mono-dimensional code; besides

the nodalization is such that every thermal structure includes portions of rods in which

are inserted thermocouple at different height.

So, inevitably, there will be a difference between experimental and calculated data.

Observing the calculated data it's evident that:

- the dryout is deferred of about 100 s;

- the beginning of the dryout happens (like in the test) before the pumps stop;

- the core uncovering is of top-down type.

In conclusion therefore the good achievement between experimental and calculated

data can be observed.

Fluid temperature

The inlet and outlet vessel fluid temperatures are well predicted by the code (Figs. 4.16

and 4.17).

4.2.2 Phase 2: From the pumps stop to the end of the accumulator injection

(28204050 s)

The phenomena that have characterized this phase have been:

- redistribution of the primary system mass inventory;

- partial and temporary rods rewetting;

- accumulator injection;

- rods thermal excursion;

- the primary side depressurization;

- break mass loss.

All these phenomena have been well reproduced by the code and particularly the

asymmetrical behavior of the two primary circuits has been simulated.

The characteristic of mono-dimensionality of the code has not allowed to represent the

diversified behavior of the rods, but the code is able to reproduce the effect of the mass

drained from the intact loop hot leg on the rods thermal excursion.

Analysis of post-test calculations results-38
As far as it concerns the specific simulation of most meaningful variables, it can be

observed as following:

Primary pressure

Fig 4.18 shows the good achievement between the experimental and calculated data

with the only exception in the interval 3150-3400 s. In such interval in fact the

experimental values show a constant decreasing, while in the calculated data the

pressure remains quite constant. This could be due to the overestimation of the

calculated condensation associated to the accumulator injection; that determines

accumulator flowrate higher than the experimental value (Figs. 4.19 and 4.20). The

temporary great depressurization is then compensated by a lower flowrate to which is

associated a slower depressurization.

Rod surface temperature

The heater rod temperature is qualitatively well simulated (Figs. 4.13, 4.14, 4.15)

during this phase. Particularly it can be observed that as in the test, the phenomenon of

dryout doesn't interest the bottom levels (Fig. 4.15).

As in the test, core rewetting is bottom up type.

The difference between the experimental and calculated values of the peak clad

temperature is ranging in the interval 40-80 K while the core rewetting is ranging in the

interval 130-200 s.

CCFL

The code has also correctly simulated the end of CCFL conditions and the consequent

back flow to the core of liquid mass (Figs. 4.8 and 4.21). As a consequence of that a

reduction of the core heat-up rate it is observed (Fig. 4.22).

Accumulator injection

The accumulator flowrate is qualitatively well simulated (Fig. 4.19) even if the time for

emptying is about 200 s higher.

However the core rewetting occurs at about t=3200 s.

A disagreement between the experimental and calculated data is that the injected

accumulator mass is directed to the loop seal (Fig. 4.23).

Vessel levels

The figures 4.10 and 4.11 show the calculated and experimental data of the downcomer

and riser level respectively.

In particular the Fig. 4.10 shows the good performance of the code also from the

quantitative point of view since it reproduces the level increase consequent to the

pumps arrest.

The riser level is qualitatively good and particularly it is well simulated the liquid level

decreasing following the pumps stop.

The sensitive difference of the level in the riser can be partly explained with the fact

that, contrarily than happened in the test, the injected accumulator mass flows in the

vessel, but also in the loop seal. This is showed by the Figs. 4.24 and 4.23.

Mass inventory

The Fig. 4.12 shows the good agreement between the experimental and calculated data.

Analysis of post-test calculations results-39
Break flowrate

In this phase, the break flowrate is well simulated by the code (Figs. 4.2 and 4.3).

Analysis of post-test calculations results-40
4.2.3 Phase 3: From the end of the accumulator injection to the final core

rewetting (4050-6900 s)

The phenomena that have characterized this phase have been:

- repressurization of the primary circuit;

- break mass loss;

- core dryout;

- PORVs opening and LPIS injection;

- core rewetting.

Also this phase has been well reproduced by the code even if the dryout is earlier by

about 350 s. This is essentially due to the fact that, in the simulation, the accumulator

mass injected into the vessel is lower in comparison to that injected in the experiment.

As a consequence of the earlier occurrence of the second core dryout both the PORVs

and LPIS are activated earlier. However, from the table 4.2, it's evident that the time

periods of intervention result to be almost the same.

As far as it concerns the specific simulation of most meaningful variables, it can be

observed as following:

Primary pressure

The repressurization (Fig. 4.1) following the end of the accumulator injection is well

represented by the code.

The depressurization following the PORVs intervention is also well reproduced.

Break mass flowrate

The break mass flowrate increase consequent to the activation of the system LPIS is

reproduced by the code (Fig. 4.2).

Rods temperature

Even if the second core dryout is earlier in the calculated data, it has been reproduced

with the same modality of the test (Figs. 4.13, 4.14, 4.15). The difference between

calculated and test peak clad temperature is ranging in the interval 5-80 K.

Mass inventory

The primary side mass inventory (Fig. 4.12) is very well simulated except for the phase

of filling.

Vessel levels

The riser collapsed liquid level has a trend similar to experimental one even if in

absolute value it results lower of about one meter (Fig. 4.11). In the downcomer the

calculated collapsed liquid level has a most rapid diminution in comparison to the

experimental one even if the initial absolute values are equal (Fig. 4.10).

In conclusion it can be stated that the simulation of these variables is quite good.

Analysis of post-test calculations results-41
4.3 SENSITIVITY CALCULATIONS

The reference calculation was aimed to best reproduce the initial and boundary

conditions.

The sensitivity calculations have been realized in order:

- to improve the simulation of specific aspects;

- to evaluate the effect of specific parameters changing.

Based on the reference calculation some sensitivity calculations (Tab. 4.3) were

realized in order to improve the break flowrate, to verify the on set of the CCFL

phenomena, to improve the time of intervention of the second core dryout.

CODE CHARACTERISTIC/VARIED MAIN RESULTS

RUN PARAMETERS

R01 -two phase discharge coefficient equal to -two phase break flowrate higher

1.10 - less primary mass inventory

-accumulator pressure equal to 3.83 MPa - earlier occurrence of the dryout

- earlier occurrence of the following

events

R02 - in junctions 115 and 208, gas intercept - CCFL only in IL

coefficient equal to 0.48 - more water flows back to the core

-reduction in the core heat-up rate

R03 - in junction 145, reverse flow energy - loop seal filling delayed

loss coefficient equal to 109 - more water in the vessel

- accumulator flowrate more similar

to experimental one

- increase of outlet vessel mass

flowrate

- earlier occurrence of the 20 dryout

R04 -intact loop steam generator nodalization - increase of secondary circuit

change thermal dispersions

Analysis of post-test calculations results-42
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Analysis of post-test calculations results- 4 3
4.3.1 R01-case

From the analysis of the reference calculation, it is observed that the calculated

break mass flowrate during the two-phase regime is lower than the experimental one.

So a sensitivity calculation was realized with two phase discharge coefficient equal to

1.1 instead of 0.95. The consequence of this modification is a great flowrate (Fig. 4.25)

and therefore the mass losses through the break is increased (Fig. 4.26). As a

consequence the primary side depressurization is increased and the pumps arrest is

occurred about 200 s earlier (Fig. 4.27). That is due to the anticipation of the rod

thermal excursion (Fig. 4.30) determined by the lower mass inventory in the primary

circuit (Fig. 4.28) and in the vessel (Fig. 4.29). The earlier occurrence of the first

dryout makes all the following events suffering of the same advancing (Figs. 4.30 and

4.31).

4.3.2 R02-case

To verify the physical borders for the activation of the CCFL model in the two

junctions 115 and 208, the parameter c (gas intercept) was increased from 0.4 to 0.48.

From the results, it is observed that the CCFL is only verified in the junction 115 of the

intact loop (Fig. 4.32) (in fact in the junction 208 of the broken loop, water is present in

both the volumes connected by the junction (Fig. 4.33)).

The water that flows back to the core is increased in comparison to the base case (Fig

4.34). This has determined a reduction in the core heat-up rate (Fig 4.35). Besides it is

observed that, a little bit earlier of pumps stop, the primary pressure is higher than the

base case (Fig. 4.36) of about 0.5 Pa.

4.3.3 R03-case

In the reference case it is observed that part of the accumulator injected water

does not go into the core but in the loop seal of the intact loop. Then it was realized a

sensitivity case in which the reverse flow energy loss coefficient of the volume in

which injects the accumulator, was set equal to 10. The consequences of this are:

1) the filling of the loop seal is delayed (Figs. 4.37, 4.38, 4.39);

2) more water goes into the vessel (in fact the collapsed levels are higher (Figs. 4.40

and 4.41));

3) the accumulator injection is shorter and the mass flowrate is more close to the

experimental one (Fig. 4.42); as a consequence the core rewetting is about 100 s

earlier (Fig. 4.43) respect to the reference calculation and practically at the same

instant in which it is observed in the test;

Analysis of post-test calculations results-44
4) the outlet vessel mass flowrate is increased (Figs. 4.44 and 4.45); that determines an

earlier occurrence of the second core dryout.

4.3.4 R04-case

This sensitivity was realized to verify the influence of the degree of the mesh

size of the steam generator. The selected steam generator was intact loop one because it

is representative of three steam generators; the size number of its volumes was halved

both in the primary side and in the secondary side. However substantial changes are not

recorded in the general course. The only sensitive change concerns the thermal

dispersions of the secondary circuit that is increased (Fig. 4.46). It is not noticed,

instead, variation of the heat exchanged power (Fig. 4.47).

Analysis of post-test calculations results-45
4.4 QUANTITA TIVEACCURACYEVALUATION

A particular methodology, developed at University of Pisa, it was applied to the

different realized calculations in order to evaluate their quantitative accuracy. The

methodology is based upon the use of the Fast Fourier Transforms; its main features

are detailed in App. 6.

As mentioned in the appendix the application of FFT is characterized by performing

several steps and/or verifying certain conditions. In our case we have implemented a

simplified application of FFT since many of the steps or conditions can be considered a

priori satisfied. That is because both the LOBI facility and the nodalization can be

considered qualified.

The results of the application of the methodology are given in Tab. 4.4 and 4.5. From

the Tab. 4.4 it can be observed that for the reference calculation is satisfied the

criterion of acceptability, AAtot <0.4, therefore the calculation is good.

Following some comments are given on the results obtained.

a) Reference calculation

The high values for AA19 (difference of pressure in the ascending side of the loop seal

of the BL) AA20 (difference of pressure in the ascending side of the loop seal of the IL)

AA21 (difference of pressure in the descending side of the loop seal of the BL) are due

to the uncorrected simulation of the loop seal inventory.

The high value of AA10 (integrated mass injected in the primary system from the

emergency systems) is due to the earlier of the second core dryout that implicates the

earlier intervention of the LPIS. This is testified by the fact that in the temporal

window 0-4900 s the parameter AA,0 is 0.06.

b) Sensitivity calculation, ROI

Compared to the base-case, in RO1-case the value of AA, (pressure in the primary side)

is already higher in the temporal window 0-4900. This is due to the increase of the

depressurization following to the increase of the break flowrate. The further worsening

suffered in the next window is due to the earlier occurrence of the second core dryout.

The doubling of the value of AA3 (pressure in the accumulator) is due to the earlier

injection of the accumulator consequently to the earlier pumps arrest (of about 180 s).

The value of AA4 (fluid temperature at the core inlet) is increased in the temporal

window 0-4900 s. 70 s after the beginning of the test, the primary system reaches the

saturation conditions so the fluid temperature (Fig. 4.48) has the same course of the

primary pressure, therefore the fluid temperature at the core inlet has the same error of

the primary pressure (there is same proportionality in the variations of AA, and AAJ.

Analysis of post-test calculations results-46
While the further worsening in the following window is due to the earlier occurrence of

the second core dryout.

Analysis of post-test calculations results-47
BASE bASE "R01_R _1 002 R02 KU3 K03 K04 R04

WF AA _ WF AN- - WF -- AX - WFWF Vi .. . AAW

1 Primary pressure .0.02-r---0O97- 023 --- 03972--0:023 -0-.0754 OT.O22 -O-OS3 -002• ---0:0093

2 Secondary pressure - 0.046 0:0128 -0.040 -- 00-28--00 ---0T28 4.8046---T0om12 -w -001-28

3 ACG pressure 0.012 0.0647 0.01 0.1371 0013 0.0626 0.012 0.0634 0.011 0.0691

4 core Inlet fluid temperature 0:036 0i536 0.037 0:2182 0.036 0.155 -0038 0.2768 0.036 0.1516

5 core outlet fluid temperature 0.017 0.3329 -0.017 0.3747 0.01 0.3396 . 0.017 0.3044 0.018 0.3642

6 upper head fluid temperature 0.023 0.21-4 -- T 0T.1-9-4 -0:0-21 -902007 -. 0.021 0.1924 0024 -02t53

7 integral break flow rate 0.046 0. 1624 0.044 0,3094 0RV.6 0.1693 ..... W 7,3509-- 3 ----0:04-6 0621

---8 SG DC bottom fluid temperature -0.034 1403 -0:034 -- 142T 0:& ---0.1404'" 01.035 -- 01.688 -0:035 -0-.1425

9 break flow rate 0.061 1.1814 0.56 T.3351 0061 T1873 0.057 1.2735 0.061 1.1717

10U ECCS integral flow rate -004 0.8712 -004 1.3474 -004 0.916 0.039 1.4994 0.04 0.8711

11 rod temperature bottom level 0.011 0.0845 0.014 0.099 -0.01 -00857 0 .03 0.1309 0.01 0.0842

12 rod temperature middle level -0013 -07555 014 0.6804 0.013 0:7825 0.013 -0:7025 -0.013 -0.7304

-T-3 rod temperature high level 0.012 0.8797 0.013 -07922 --- 0-12 0861 0012 .. 0.829 0... 0-13 0:8784

14 primary side total mass 0.035 0.4217 0.035 0.5587 .. 0035 0,412 003- 0.5955 ....0_036 0.431

15 core leIel . 0.024 -0.742- 0T022 -T.7728 -- 0:02-4- 0.7479 -- 07022 -7.7593 --- 07024- 07057

16 SG DC level (IL) 0.029 0.2544 0.029 0.2548 0.029 0.2544 0.032 0.2621 0.03 0.2588

17 DP in-out SG (IL) 0.016 -02729 0.023 0.4162 0.016 0.2682 0.046 0.8458 0.017 0V2639

1M core power 0.064 0.0635 0:042 0483 0.059 0.0718 0.044 01354 0:051 0.0884

19 DPi-sea- BL-a--4-s ngn--idl-- -- 0019 -0.9168- 0.021 0.9115 0.02 0:9282 -VOW 0.9259

20 DP loop seal IL-ascending side 0.025 1.1916 0.02 12197 G..... -1.195- .022 ---10329 -002 4242

-1 DP loop seal BL -descending-iide-----0:03 10917 --- 0029 -T43 -- 029-----1 383---0.028 -1-1204 -- 10.03 -1_097W

22 PRZ level 0.035 0.1535 0.018 0.1507 0.035 0.1535 0.033 0.1531! 0.035 0.1524

23 UP SG inlet plenum Utebes top BL 0.027 0.4461 0-029 0.4354 0.027 0.4523 0.027 0.4488 0.028 0.4451

24 DP SU inlet plenum Utebes top IL 0.U22 0.2521 0.025 0.2697 0.022 0.2472 07048 0.6309 0.045 0.3106

25 DP across DC-UHbpa 0.019- 0-43U8 0.02 04318 0021 -0.4701 .- 002 -70-4566 --- 00-2- -- 0D-39

TOT -0:0262T 0:3W-70:02524 0.38861 0.0259 -- 0:3537-02776 -0"074 -0:02657 0.,35W&

Tab. 4.4 - Summary of results obtained by application of FFT method on all transient

Analysis of post-test calculations results-48
FrNtb [FA U-499 BA•I BAbE IR0 1 Hu I 02 R02 R03 R3 R0U4 RU4 _ _ _ _AF A W:F- AN- WF AX - iWF AA WF AAK

1 Primary pressure 0.053 -0.049 0.03 0.083 M -0U.53 0.0495 0.53 0.0493 0.052 0.048

2 secondary pressure 0.056 0.0152 0.56 0.152 0.056 0.012 0.05 0.0152 0U.5 15

3 AGC pressure 0.014 0.057 0.011 0.1298 0.014 0.0556 0.014 0.0511 0.013 0.0612

4 core inlet fluid temperature .036 0.0553 0025 0077 0.037 0.0585 -13 .041 - 0.0541 0.0328 -u.0u0

5 core outlet fluid temperature 0.02 0.0283 0.018 0.2487 0.02 0.2135 0.025 0.1349 0.023 02U54

6 upper head fluid temperature 0.041 0.2041 - .041 0.2081 0.041 0.2093 0.041 0.2131 0.041 0.2U85

7 integral break flow rate 0.03 0.041 0.013 0.0248 0.028 0.0394 0.029 0.03 0.0409

8 SG DC bottom fluid temperature 0.039 0.1575 0.039 0.1645 0.039 - .157 0.039 0.1576 0.041 0.1643

9 break flow rate 0.074 0812 0.074 0.08 .074 0.819 0.074 08128 0T074 0.8161

10 ECCS integral flow rate 0.018 50.055 01 1 08 0.1012 0:021 0.021 0.0522 0.017 0.0831

11 rod temperature bottom level 0.029 0.0545 0.025 0.0702 0.03 0.0572 0.031 0:0502 0.031 0.0568

12 rod temperature middle level 0.01 -0.T12 06191 0.5271 0.01 - 05.49 0.012 0.5299 0U.11 0.5B3

13 rod temperature high level 0.01 0.655 0.013 -0.446 -.o0 0.6587 -0-.12 0.5654 0.011 0.6389

-14 primary side total mass 0.03 0.245 0.034 Z0.2459 .235 -0:031 -0:033 0M258 0029 0.2269

S corelevel 0.039 0.4061 0.043 0.835 0.039 .33 - .4 0.4527 0.04 0.3934

16 SG DL level (IL) .. 0.049 0.3091 -0.049 0.3096 0.049 0.3089 0.049 0.309 0.05 0.3152

17 UP in-out SG (IL) -0:024 02525 0.28 0.358 0.024 0.023 0.2553 00.2448 0.075 0.2377

18 core power 0:091 0.0544 0:052 0.0946 0.093 0.0528 0.097 0.0508 0.096 0.U499

19 DP loop seal BL -ascending side 0.023 0.7635 0.025 0.7621 -0.024 07459 -0023 0.7798 0.024 0.7953

20 DP loop seal IL -ascending side 0.035 0.9402 0.035 0.9598 0.036 0.9322 0.037 0.0896 0.035 7 W152

21 UP loop seal BL -descending side 0.008 0.7283 -0039 0.6753 0.038 0.7242 0.037 0.7176 0.038 0.7164

22 PRZ level 0.041 0.1471 0.041 0.145 -0041 0.1471 -004 01471 -0041 0.146

'23 UP SG inlet plenum Utebes top BL 0.031 0.4359 0.032 0.416 0.031 0.436 0.031 0.438 0.031 0.4315

24 DP SG inlet plenum Utebes top IL 0.026 W 0.248 0.029 0.2579 0.026 0.2428 0.026 0.245 0.056 0.310B

25 DP across DC-UH bypass 0.035 0.4M29 0.035 0-.407 -0035 -0.4617 0.035 0.457 0.035 0.4791

- 0.032 0.2419 0,029 0.2404 -0;0327 TO0T2-4-0:340--0.2291 

0103355-(72433-

Tab. 4.5 - Summary of results obtained by application of FFT method (0-4900 s)

Analysis of post-test calculations results-49
The same reason can explain for the value of AA,, (rod temperature at the bottom

level).

The earlier intervention of the emergency system LPIS, is also reflected on the value of

AA7 (integral break flowrate) since following this intervention the integral break

flowrate increases notably. However it can be observed that in the temporal window 0-

4900 the value of AA7 is lower than the base case therefore the purpose of this

sensitivity calculation, improving the break flowrate during the two-phase flow, has

been reached even if this has a negative consequences in the rest of the test.

The same evaluation are valid for the value of AA9 (break flowrate).

The parameter that is affected by the earlier intervention of the LPIS is AA1O (integrated

mass injected in the primary system from the emergency systems).

The values of AA1 2 (rod temperature at middle level) and AAD3 ( rod temperature at

high level) are decreased since the earlier pumps stop determines the earlier

accumulator injection and then the core rewetting coincides with the experimental time

(Figs. in Appendixes).

The high value of AAM (mass in the primary circuit) is due to the earlier intervention of

the LPIS; in fact in the temporal window 04900 the value of AA14 is not different from

the value of the reference calculation.

c) Sensitivity calculation, R03

The high value of AA, (pressure in the primary side) is due to the earlier occurrence of

the second core dryout that in turn determines the earlier operation of depressurization.

In fact in the temporal window 0-4900 the value of AA, is not different from that of the

reference calculation.

Higher values for AA7 (integral break flowrate), AA9 (break flowrate) and AA10

(integrated mass injected in the primary system from the emergency systems) are due

to earlier intervention of the LPIS. In fact owing to the intervention of the system LPIS

the break flowrate suffers a noticeable increase and, therefore, also the integral break

flowrate is affected. This assumption is confirmed by the fact that they remain

unchanged in the temporal window 0-4900.

The high value of AA17 (pressure difference between the inlet and the outlet of the

intact loop steam generator) is due to an accumulation of liquid in the ascending part of

the U-tubes (Fig. 4.49); that is also shown by the high value of AA24 (pressure

difference at the inlet plenum of the U-tubes in the intact loop steam generator).

The purpose of this sensitivity case was to avoid the accumulation of liquid in the loop

seal during the injection of the accumulator. Partly this purpose has been reached; in

fact AA20 (pressure difference in the ascending side of the loop seal of the intact loop)

is lower than the base case in the temporal window 04900 s.

d) Sensitivity calculation, R04

The spike registred at about 200 s determines the high value of AA2. (pressure

difference in the ascending side of the loop seal of the intact loop).

Analysis of post-test calculations results-50
e) General observations

Case R03 has the lowest value of AA20 (pressure difference in the ascending side of the

loop seal of the intact loop); in fact in R03 being higher the void fraction in the loop

seal the pressure difference is lower, and then it is more close to the experimental

values.

For the values of AA7 (integral break flowrate) case R03 has the highest value, and

following it RO0, R02, R04. This order is due to the earlier intervention of the system

LPIS, in fact the case with earliest intervention has the highest value of AA7 (Fig.

4.51). The same order should be observed for AA9 (break flow rate), but it is observed

that the case RO0 has the highest, and following R03, R02, R04. The exchange of

position between R03 and RO0 is probably due to spikes (Fig. 4.52) during the

accumulator injection. These loss have canceled the improvement obtained during the

two-phase flow period.

The influence of the fluctuations on the values of AA is noticeable so it can be

observed that in the quantitative analysis the presence of spurious peak results more

important than in the qualitative analysis.

Analysis of post-test calculations results-51
0

0.

xlO 6

7

6

5

4

3

2

I

0

-1000.

i I I I I I I I I I I I I

XXX BASE CNTRLVAR80

flY V10V9*1000000

x v x VV XXt-t2

WVG3nW 2.04-27.1 M

m

-r

0 1000. 2000. 3000. 4000.

Time (s)

5000. 6000. 7000.

Fig. 4.1 : Heating power

VhGnri 24 -04-24-t9M

S

0.

S

a

0

a.

20.0

18.0

16.0

140

12.0

10.0

&0

&0

40

2.0

0

-1000. 0 1000. 2000. 3000.

Time (s)

4000. 5000. 6000. 7000.

Fig. 4.2: Primary system pressure

Analysis of post-test calculations results-52
VWGO.u 14o04-27.l098

1.00

I JI I I I B I I I I I I I I

.80 XXX BASE MFLOWJ950000000

YYY V7=SMOOTHV6,5)

.60

.2

0U , o

-.20

-. 20 .... L....i I I I I I I I I I ! I I I

-1000. 0 1000. 2000. 3000. 4000. 5000. 6000. 7000.

Time (s)

Fig. 4.3 Break mass flow rate

WmG 14 -04-.27oON

moo

700 .

XXX V4=INT(V3)

G00 - YYY ELO6 QLO5EWT

S 400 0

4000 

200 -

100

-1000. 0 1000. 2000. 3000. 4000. 5000. 6000. 7000.

Mime (s)

Fig. 4.4: Break integral flow rate

Analysis of post-test calculations results-53
5 WWW 2.4 -04-d7-IS xlO

0

1.40

1.20

1.00

.80

.60

.40

.20

0

-.20

4

3.5

3

2.5

2

1.5 •

I.SI

.5

0

-.5

•400. -200. 0 200. 400. 600. 800. 1000. 1200. 1400. 1600.

Time (s)

Fig. 4.5 Void fraction at pump inlet and pump head (IL)

VGa2.4. 04-27-IM

0

0

1.40

1.20

1.00

.80

.60

.40

.20

0

-20

5

xlO

4 I i

VOIDG223010000 3.5

PMPHEAD225

3

2.5

2 ?

1.5

ý"J

0

400. 600. 1000. 1200. 1400.

Time (s)

Fig. 4.6: Void fraction at pump inlet and pump head (BL)

Analysis of post-test calculations results-54
VWOnuf4-04-27-19M

C

0

U

0

1.20 -

1.00

.80

.60

.40

.20

-.200

-500.

Time (s)

Fig. 4.7 :Void fraction at pumps inlet

VOI&Wff2.4.04-27.19

C

0

U

0

1.40

1.20

1.00

.80

.60

.40

.20 -

M

KXXBw

n-Y BA

I I I I I I I

SE VOIDG110020000

SE VOIDG120010000

SE VOIDG120020000Y Y7 7 Y •,'' AN %W I ýfJ %ýwJ -~.Y -%1 I -U -lJ 

t~ \

I I I I I I

-.20

410

..... I I I I I - - I I - - -1 -

000. 0 1000. 2000. 3000.

Time (s)

4000. 8000. 6000. 7000.

Fig. 4.8 : Void fraction at steam generator inlet (IL)

Analysis of post-test calculations results-55
VW 21.4 - 04427.-11M

1.40

1.20 XXX BASE VOIDG206030000

YYY BASE VOIDG210010000

ZZZ BASE VOIDG21002000q

1.00 - X

.80

* .60

1. 40 I I

.20

0 __a• 0_

o-.20- -.20 i I I I I I I I

-1000. 0 1000. 2000. 3000.

Time (s)

Fig. 4.9 Void fraction at steam generator inlet (BL)

4000. 5000. 6000.

VWW2,.114 - @447.1

*1

.1

~1

3

U

10.00

9.00

8.00

7.00

&.00

5.00

4.00

3.00

2.0O

1.00 -

-1000. 0 1000. 2000. 3000. 4000. • 5000. 6000. 7000.

Time (s)

Fig. 4.10: Collapsed level in the downcomer

Analysis of post-test calculations results-56
yWOQf14- 04-27-1996

10.00

9.00

8.00

7.00

6.00

5.00

4.00

2.

.3I

a

U

3.00 -

2.00 -

1.00 , I

-1000. 0 1000. 2(

Fig. 4.11 : Collapsed level in the riser

Time (s)

dnGrQ2.404-27-108

S0

U0

U0

550 -

450 .

400 .

350 -

300 .

250 .

200

150.

100 .

50 -

41000. 0 1000. 2000. 3000. 4000. 5000. 6000. 7000.

Time (s)

Fig. 4.12 : Primary system mass inventory

Analysis of post-test calculations results-57
W.• rof214 - 04-27-1OU

0

2

a

0

a.

2

0

I600

550

500

450

400

350

300

250

200

150-

-1000. 3000.

Time (s)

7000.

Fig. 4.13 : Rod surface temperature (high level)

V*.40.t14 - 04-27-11

S

a

U

a

2

0

650-

600 -

550

500

450

400

350

300

250

200

ISO

-1000.

I I i i i il

XXX BASE HTTEM4 P335300205

YYY ELOG THMEAN07

ZZZ ELCO THMEANO8

. . i a , a * * a a

~I- I N I I I U I III I I I I

I

0 1000. 2000. 3000.

Time (s)

4000. 5000. 6000. 7000.

Fig. 4.14: Rod surface temperature (middle level)

Analysis of post-test calculations results-58
Vi.nOrIO 2.4. 04-27-IM

9

E

1!

360

340

320

300

280

260

240

220

200

180

160-

-1000. 0 1000. 2000. 3000.

Time (s)

4000. 5000. 6000. 7000.

Fig. 4.15 : Rod surface temperature (bottom level)

Yh'Oaf 4 -04-27.1KB

E

A340

320

300

280

260

240

220

200

180

160

140 -

-4000.

XXX BASE TEMPF325010000

I ~~~Y I B3 B IV135 EL0 T B I

t1000. 2000. 3000.

Time (s)

4000. 5000. 6000. 7000.

Fig. 4.16: Core inlet fluid temperature

Analysis of post-test calculations results-59
VAnGrd1h4.04-27O199

400 r

375

350

325

2 300

27

250

225

200

175 I I i I

-1000. 0 1000. 200C

Fig. 4.17 :Core outlet fluid temperature

3000.

Time (s)

7000.

WWVA4s24 . 06-11-19W

S.00

4.50

4.00

3.50

3.00

2.50

U

a.

U

2

a

a

U

a.

2.00

1.50

1.00

2600. 2800. 3000. 3200. 3400. 3600. 3800. 4000. 4200. 4400.

Time (s)

Fig. 4.18 : Primary system pressure

Analysis of post-test calculations results-60
GW,4 - 04-27-IO

ii

0

m0

.23

.20

.18

.15

.13

.10

.08

.05

.03

I I I I I I I I

Ny

XXX BASE MFLOWJ740000000

YYY V49--SMOOTH(V48,5)

I I I I I I I I I I I I I

v• 1 %f U10

-,03

-100 I I I I I I I I I I I I I

)0. 1000. 2000. 3000.

Time (s)

4000. 5000. 6000. 7000.

Fig. 4.19: Accumulator system mass flow rate

*W 14 - 04-27V-1

S

a

U

160

140

120

100

go

60

40

20

0

-20

3000.

Time (s)

Fig. 4.20: Integral accumulator system mass flow rate

Analysis of post-test calculations results-61
•AGMW.4. 04.27.1908

.10

.05

0

S

a'I

3

.2

a

a

U

-.05

-.15

-,20

-.25

2800. 3000. 3200. 3400. 3600. 3800.

Time (s)

4000.

Fig. 4.21 Mass flow rate of junctions that connect the vessel to the hot leg

IM0rsf124 . 04-27-1908

0

.3

a

a

H

a

I65O

550 -

500So

450 -

400 -

350 -

300 -

250 .

200

2200. 2800. 3000.

lime (s)

3600.

Fig. 4.22: Heater rod temperature

Analysis of post-test calculations results-62
mWG01z4 .04.27.199

.40

.30

.20

99

U

a

a

.10

-.10

-.20 -

-. 30I I I I I I I I I

2600. 2800. 3000. 3200. 3400. 3600. 3800. 4000. 4200.

Time (a)

Fig. 4.23 : Accumulator mass flow rate and mass flow rate of the inlet junction of the

volume in which the accumulator injects

mW,-un 2.4 .0427.19M

1.40

1.20

1.00

C

.80

.60

.40

XXBASE VOI1DG133010000

YYY EL06 VOID14

v- UV V vv Vvv

I x IX I I I I X X

0

.20

-1000. 0 1000. 2000. 3000.

Time (s)

4000. 5000. 6000. 7000.

Fig. 4.24: Void fraction at the pump inlet of the IL

Analysis of post-test calculations results-63
W~rd 4.- 4-27.19We

1.00

.80 -

.20

6

! .40.

0

-.20 ! I i LI

-1000. 0 1000.

Fig. 4.25 : Break mass flow rate

3000.

Time (s)

¶M*CWfI4 -04-27.-1g

900

800

700

600

500

- 400

300

200

100

0

-100

-4001

xxx V83--INT(V62) * jYYY V65--INT(V64)

ZZ ELSOLSW

0. 0 1000. 2000. 3000.

Time (a)

4000. 5000. 6000. 7000.

Fig. 4.26: Break integral flow rate

Analysis of post-test calculations results-64
Waa 2.4 - 04-27ol

700

I I I I I I I I l i I I I I

XXX BASE PMPVEL135

So0 . XY YY YYY ROI PMPVEL135

4 400 -

30

>2 0

CL

E 200

100

-1000. 0 1000. 2000. 3000. 4000. 5000. 6000. 7000.

Mime (s)

Fig. 4.27: Main coolant pumps speed

550

No XXX BASE CNTRLVAR999

450YYY ROI CNTRLVAR999

4001

350

300 /

200

ISO

10 y.,!•,, *, ,v'w,, r'._)_,y.• I 

100 i

-1000. 0 1000. 2000. 3000. 4000. 5000. 6000. 7000.

Time (s)

Fig. 4.28 Primary system mass inventory

Analysis of post-test calculations results-65
VfGnm# 2.4 - 04-27-1OU

10.00

9.00 \

"• 6.00

5.00

3.00

2.00

1.00 I I I

-1000. 0 1000. 2(

Fig. 4.29: Collapsed level in the riser

3000.

Time (s)

M,• 2.4 - 04-27-1OW

700

600

500

400

300

0

.3

U

a.

I

0

I2

10000 L

4000. 0 1000. 2000. 3000.

Time (s)

4000. 5000. 6000. 7000.

Fig. 4.30: Rod surface temperature (high level)

Analysis of post-test calculations results-66
W•nGnt 2.4.04-27-lIm

20.0

18.0

16.0

14.0

12.0

a 10.0

& 8.0

6.0

4.0

2.0

0

-1b

I I I I I I I I I I I I I I

SXXX BASE P350010000

YYY RO0 P350010000

ZZZ EL06 PA38

10. 0 1000. 2000. 3000.

Time (s)

4000. 5000. 6000. 7000.

Fig. 4.31 : Primary system pressure

Vwa'r24-049-Vq-lt0

1.40

1.20

1.00

.80

.60

>• .40

.20

j~~ I I I r r I--- I I I I

YYY R02 VOIDG120010000

7vW)

0

-.20

-1000.

-~'.4-j

! i i I I I I I I I I I I I I I i - -

0 100. 2000. 3000. 4000. 5000. 6000. 7000.

Time (s)

Fig. 4.32 : Void fraction at steam generator inlet (IL)

Analysis of post-test calculations results-67
*G 142 - 04-V27-iflM

1.20

1.00

~AA

so

X!,

XXX BASE VOIDG210010000

YYY BASE VOIDG206030000

.2 ZZZ R02 VOIDG210010000

VW R02 VOIDG206030000

0

-.20

-500. 0 500. 1000. 1500. 2000. 2500. 3000. 3500. 4000.

Time (s)

Fig. 4.33 Void fraction at the upstream and downstream volumes of the junction 208

VYnGnf 2.4.04-2T-I9

.30 I I II I I

.20 XXX BASE MFLOWJ350020000

YYY R02 MFLOWJ350020000

.10

U, 0

'3 ! -10

20 * -.20

-.30

-.40

2675.0 2700.0 2725.0 2750.0 2775.0 2800.0 2825.0 2850.0 2875.0 2900.0 2925.0

Time (s)

Fig. 4.34 : Mass flow rate of junction that connects the vessel to the hot leg of intact

loop

Analysis of post-test calculations results-68
VV&f14s 404-27-I9W

650

600

XXX BASE HTTEMP33534

YYY BASE HTTEMP3355( 550 -ZZZ BASE HT-EMP3356(

WV R02 H-TTEMP3353(

500 JJJ R02 HTTEMP3355(

HHH R02 HTTEMP3356(

Sj 450

250

150

2200. 2400. 2600

Fig. 4.35 Heater rod temperature

2800.

Time (s)

WnOI 2.14-04-2"-IN

4.20

4.10

4.00

3.90

3.80

: 3.70

3.60

3.50

3.40

3.301 I I I I * I I

2550.0 2600.0 2650.0 2700.0 2750.0 2800.0 2850.0 2900.0 2950.0

lime (s)

Fig. 4.36: Primary system pressure

Analysis of post-test calculations results-69
A4.Grtlf24.04-27-lft

1.20 - I I a

1.00

.80

0 .60

• 0 .40 I / r

.20 "

-.20 .......... I I I I I I I

-1000. 0 1000. 2000. 3000.

Time (s)

Fig. 4.37 : Void fraction in the loop seal (vol. 13005)

4000. 5000. 6000.

WIrO 2.4 - 04-27o12M

1.20

1.00

.80

o .6

1 .40

o

0

-120-10010. 0 1000. 2000. 3000. 4000. 5000. 6000. 7000.

Time (s)

Fig. 4.38 Void fraction in the loop seal (vol. 13004)

Analysis of post-test calculations results-70
VMrGnaf14 - 04-27-19M

0C

V2

9

1.40

1.20

1.00

.0 -

.60

.40

.20

A

I IIIIII III

XXX BASE VOIDG130030000

YYY R03 VOIDG130030000

Y 

-1

Y. xL V

w

-.20

40C

x h xx

100. 1000. 2000. 3000.

rime (s)

4000. 5000. 6000. 7000.

Fig. 4.39: Void fraction in the loop seal (vol. 13003)

Wldr124 * 04-27-1IlU

8.00

7.00

XXX BASE CNTRLVAR315

YYY R03 CNTRLVAR315

6.00

5.00

3.00

L.OO

1.00

2500. 2750. 3000. 3250. 3500.

Time (s)

Fig. 4.40: Collapsed level in the downcomer

Analysis of post-test calculations results-71
VWM 14-.04-27-ING

.5

S

~0

a

'aa.

.5

.5

U

6.00 -

5.50

5.00

4.50

4.00

3.50 1

3.00

2.50

1.502500. 2750. 3000. 3250. 3500. 3750. 4000. 4250. 4500.

Time (s)

Fig. 4.41 "Collapsed level in the riser

VMC-r2.4 -04-U-4I

a

.3

'a

I

a

a

a

.23

.20

.18

.15

.13

.10

.08

.05

.03

0

-.03

-1c

)OXX BASE MFLOWJ740000000

YYY R03 MFLOWJ740000000-

Y&rxy x xY y >W WY -Y --- vNW.)VW

-I- *

)00. 0 1000. 2000. 3000.

Time (s)

4000. 5000. 6000. 7000.

Fig. 4.42: Accumulator mass flow rate

Analysis of post-test calculations results-72
WOW 2.4 .04-27-1998

E

1!

600 -

650 -x

500 -Z

V

J,

450 Hl400 _

350

300

250

200

2200. 2400. 2600. 2800. 3000.

Time (s)

3200. 3400. 3600.

Fig. 4.43 : Heater rod temperature

.40

.30

.20

S

.10

0

-.10

-.20

-.30

-.40

~*1 I I I I XXX BASE MFLOWJ350020000

YYY R03 MFLOWJ350020000

Ii1000. 1W00. 2000. 2500.

Time (s)

3000. 3500. 4000.

Fig. 4.44 : Mass flow rate of junction that connects the vessel to the hot leg of intact

loop

Analysis of post-test calculations results-73
WVOW%4 - 04-27-IG"

a

.3Is

.2

0

U

.70

.60

.50

.40

.30

.20

.10

0

-.10

-.20

-.30

100C

I i i I I I i I I I I I

XXX BASE MFLOWJ350030000

YYY R03 MFLOWJ350030000

- TVit

Y •

I I I I I I I I I I I I I

10. i i i I I I i I I I I

1500. 2000. 2500.

Time (s)

3000. 3500. 4000. 4500.

Fig. 4.45 : Mass flow rate of junction that connects the vessel to the hot leg of broken

loop

VrW1O~r24.04-2T-I=

a

a

S

U

a

7500

7000

6500

6000

5500

5000

4500

7000.

Time (s)

Fig. 4.46 :Heat loss of the secondary system of the steam generator (IL)

Analysis of post-test calculations results-74
xlO 6 W.,GW1 24.04-27.100

I

0

.2

-3

-4

xlO 6VhOaf 14.04-7-19

Ii

XXX BASE CNTRLVAR22

YYY R04 CNTRLVAR22

-51

-100

I I I I I I I I I I I I I I

0. I 1000. 2000. 3000.

Time (s)

4000. 5000. 6000. 7000.

Fig. 4.47 : Heat transfer exchange power for the intact loop steam generator

W9ARGMu2.4.04-20-IWO

E

E!

350

325

300

275

250

225

200

175

150

125

-11 3000.

Time (s)

7000.

Fig. 4.48 : Core inlet fluid temperature

Analysis of post-test calculations results-75
14.WI 04.30-190

..

U

1.40

1.20

1.00

.80

.60

.40

.20

0

-.20

-1000. 0 1000. 2000. 3000. 4000. 5000. 6000. 7000.

rime (s)

Fig. 4.49: Void fraction in the U-tubes

VWsW214.04430.110

S

0.

e

a

I

a.

a

.07

.06

.05

.04

.03

.02

.01

I I I I I I I I I I

IZH

XXX VI=V1 711000000

YYY V20=V19/1000000

Caso R04 ZZZ EL06 PD1714

d•aso Base ,,J o. x

I I I I I I I I I I I I

-.0 1

u

40c300 0 1000. 2000. 3000.

Time (s)

4000. 5000. 6000. 7000.

Fig. 4.50 : Pressure difference in the ascending side of the loop seal (IL)

Analysis of post-test calculations results-76
%WGW2.4.04-0-.1908

U

U

0

S

S

U

E

.45

.40

.35

.30

.25

.15

.10

.05

0

X(XX ROl MFLOWJ810000000 ~Y fI

YYY R02 MFLOWJS10000000

.ZZ R03 MFLOWJBIO000000

VW R04 MFLOWJ810DO00000

jJJ BASE MFLOWJ810000000

X XT 7 v V X s-

-05

5000. 5200. 5400. 5600.

Time (s)

5800. 6000. 6200.

Fig. 4.51 : LPIS mass flowrate

I"24-0440-.108

.14

.12

.10

*1

S

S

S

E

.08

.06

.04

.02

0

%.02

2500. 2800. 3000. 3200. 3400. 3600. 3800. 4000.

lime (s)

Fig. 4.52: Break mass flow rate

Analysis of post-test calculations results-77
5. CONCLUSIONS

Conclusion can be considered from two separate points of view:

I - experimental evidences

2 - performances of the code

With reference to the point 1 it can be observed that:

-the recession of the CCFL conditions determines a reduction in the core heat-up rate;

- in the given scenario, the accumulator is able to terminate the core temperature

excursion bringing core in saturation conditions;

- after the emptying of the accumulator, the primary system repressurizes preventing

the LPIS actuation and causing a second core dryout;

-the actuation of the LPIS determines the long term quenching of the heater rods.

Regarding to the performances of the code it can be observed that in general all the

main phenomena are well reproduced and the timing of the events is good too.

In particular have been simulated:

- primary and secondary side thermal coupling;

-the first core dryout together with the CCFL effect on temperature excursion;

- the asymmetrical loops behavior for the CCFL and pumps degradation;

- the accumulator injection.

The greatest discrepancies have been identified in the break flowrate and in the

simulation of the loop seal.

The quantitative analysis has confirmed the goodness of the results showing a best

accuracy in the temporal window 0-4900.

The sensitivity calculations present an improvement of the simulation limited to

specific and partial aspects. The calculation more accurate is the base case and that is

confirmed by the related FFT results.

The FFT method has been applied in order to get quantitative and qualitative

evaluations of the code performance.

Based on the FFT results it can be stated that:

- the analytical evaluation of the code performance done comparing the experimental

data with the calculated date has been confirmed by the FFT results;

- the FFT is very effective as a tool for a fast screening of the code performances.

Conclusions-78
REFERENCES

[1] A. Annunziato, C. Addabbo: "Quick look report on LOBI-MOD2 Test BL-06

(1% Cold Leg Break LOCA, MCPs on)", JRC Communication No. 4355,

January 1994

[2] C. Addabbo, G. Leva, A. Annunziato: "Experimental Data Report on LOBIMOD2 Test BL-06 (1% Cold Leg Break LOCA, MCPs on)", JRC

Communication No. 4350, October 1993

[3] F. D'Auria, G. M. Galassi, R. Galetti, M. Leonardi: "Application of Fast

Fourier Transform method to evaluate the accuracy of SBLOCA data base",

University of Pisa Report, DCMN-NT 284 (96), June 1996

[4] F. D'Auria, N. Debrecin, G. M. Galassi: "Outline of the Uncertainty

Methodology based on Accuracy Extrapolation (UMAE)", J. Nuclear

Technology - Vol. 109, Nr 1 1995, pages 21-38

[5] B. Mavko, A. Prosek, F. D'Auria: "Determination of code accuracy in

predicting small-break LOCA experiment", J. Nuclear Technology - Vol. 120,

Nr 10 1997, pages 1-18

[6] Aksan S.N., D'Auria F., Glaeser H., Lillington J., Pochard R., Sjoberg A.

"Evaluation of the Separate effects tests (SET) Validation Matrix" OECDCSNI Report OECD/GD (97) 9, Paris (F), Nov. 1996

[7] The Relap5 Development Team, "Relap5/Mod3 code manual", NUREG/CR5535:V-I,V-II,V-III, V-IV, V-V, V-VI, V-VII, Idaho (USA), June 1995

[8] B. Worth, H. Staedtke : "RELAP5 base input data for LOBI-MOD2" -

Comm. 4038, LPC85-18, Feb. 85

References-79
LIST OF ABBREVIATIONS

AUXFEED

AA

ACC

BL

CCFL

CSNI

DC

DP

ECCS

FFT

IL

LPIS

MCP

MSIV

PORV

PRZ

PWR

RCS

SG

TDJ

TDV

UMAE

WF

Auxiliary feedwater

Average amplitude

Accumulator

Broken Loop

Counter Current Flow Limitation

Committee on the Safety of Nuclear Installations

Downcomer

Pressure Drop

Emergency Core Cooling Systems

Fast Fourier Transform

Intact Loop

Low Pressure Injection System

Main Coolant Pump

Main Steam Isolation Valve

Pressurizer Operated Relief Valve

Pressurizer

Pressurized Water Reactor

Reactor Coolant System

Steam Generator

Time Dependent Junction

Time Dependent Volume

Uncertainty Methodology based on Accuracy Extrapolation

Weighted Frequency

List of abbreviations-80
APPENDIX 1:

Results of the reference calculation

nft2.4-06-O6-1998

20.0

18.0

16.0 - ,

14.0

12.0

10.0

8.0

6.0

4.0

2.0

0 I I I I I

-1000. 0 1000. 2000.

Fig. 1: Primary and secondary pressure

3000.

rime (s)

7000.

tdnVrafr.4m-C8-6-1S9I

I

Ei

800

700

600

S00

400

300

200

100

0

-100 L

-1000. 0 1000. 2000. 3000.

Time (s)

4000. 5000. 6000. 7000.

Fig. 2 Break integral flow rate

AM-I
W92.4 -05-O-19Ms

1.00 I

XXX BASE MFLOWJ950000000

YYY V19=SMOOTH(DIFF(V1I

.80

),5)

.60

-. .40

.20 S

a

* .20

- XYYýv.A

_•; •y~v , :-/

.W.A0 V V -.-----.-- +

-.20 1

-100 )0. I I I I I I I I I I I I I I

0. 0 1000. 2000. 3000.

Time (s)

4000. 5000. 6000. 7000.

Fig. 3 : Break mass flow rate

V*,Gt"f14-0606-1996

700

600

500

400

U 300 a

200

100

0

-100

-100

m

* i I I I I I I i I I I I I I

XXX V3=INT(V1)+INT(V2)

YYY V6=INT(V5)+(139.9-V4)

LPIS

ACC /

WIAy WII

0. 0 1000. 2000. 3000. 4000. 5000. 6000. 7000.

Time (s)

Fig. 4 Integrated mass injected in the primary system from the emergency

systems

A1-2
V*WXG,24. 06.06IWI

360

340

320

300.

~. 280

260

E 240

220

200

ISO

180 ]

160 .. J... I I I I I I I

-1000. 0 1000. 2000. .3000.

Time (s)

Fig. 5 Rod surface temperature (bottom level)

7000.

WnC.f .4 .o -i--

2

2

650

600

550

500

450

400

350

300

250

200

150 L

-1000. 3000.

Time (s)

7000.

Fig. 6: Rod surface temperature (middle level)

A1-3
VWnrqafZA -C4

600 I I I I I I I I I I I I I I

550 LS

U

a

2

S

I500

450

400

350

XXX BASE HTTEMP33

YYY ELO6 THMEAN11

ZZZ EL06 THMEAN12

/

500U105

~/' 300 L250

200

I I 1501

-400

I I I I I I I I I I I I

)0. I 1000. 2000. 3000.

Time (s)

4000. 5000. 6000. 7000.

Fig. 7: Rod surface temperature (high level)

WnGd 2A - 0s-06-1 "

S

St

as =2

550

500-

450

400

350

300

250

200

150

100

5400 -1000. 3000.

rime (s)

7000.

Fig. 8: Primary system mass inventory

A1-4
W ra f 2.4 - 05""198

.08

.07

.06

.05

.04

.03

.02

I

T

XXX V1 3=V1 2/1000000

YYY EL06 PD9092AA

.010"

-.01

-1000.

I I I I I I I I I I I I , I I

0 1000. 2000. 3000.

Time (s)

4000. 5000. 6000. 7000.

Fig. 9: Pressure difference between the entry and the exit of the intact

loop steam genarator

VW Am 24. 05-0-1

T

.04

.03

.03

.02

.02

.01

.01

0

-.01 L

-1000. 3000.

Time (s)

Fig. 10 Pressure difference in the ascending

intact

side of the loop seal of the

loop

A1-5

APPENDIX 2:

Results of the sensitivity calculation R01

VMnGrif 2.4. 04-27-1gM

T

WI

20.0

18.0

16.0

14.0

12.0

10.0

8.0

6.0

4.0

2.0

0L

-1000. 0 1000. 2000. 3000.

Time (s)

4000. 5000. 6000. 7000.

Fig. 1: Primary and secondary pressure

VWV.l2A.404-27-1U9

in

900

800

700

600

500

400

300

200

100

0

3000.

Time (s)

7000.

Fig. 2: Break integral flow rate

A2-1
WhGmOu2A.04-27I-99I

1.00

.80

.60

.40

.20

31

.2

0 YVI

-.20 1 e

-1000. 0 1000.

Fig. 3 : Break mass flow rate

Time (s)

Vn*r 2.4-4-27-1996

S

UB =U

800 -

700

600-

500_

400

300

200

100

0

-100

-1000. 0 1000. 2000. 3000.

Time (s)

4000. 5000. 6000. 7000.

Fig. 4: Integrated mass injected in the primary system from the emergency

systems

A2-2
WCGefW2.4-04-27-19M

375

350

325

300

275

250

225

E

A

200 -

175 -

-1000. 0 1000. 2000. 3000.

Time (s)

4000. 5000. 6000. 7000.

Fig. 5 : Rod surface temperature (bottom level)

VWnGf2.4 -04-27-1lu9

I

700

600

500

400

300

200

100 1

-1000. 0 1000. 2000. 3000.

Time (s)

4000. 5000. 6000. 7000.

Fig. 6: Rod surface temperature (middle level)

A2-3
WkGr1r 24 - 04a2-12

~, 450

* 400 -

* 350 -

300 _

250 -

200

ISO I I

41000. 0 1000. 2000. 3000.

Time (s3

Fig. 7: Rod surface temperature (high level)

)

l-MWf 24A 04-27-19M

=I

550

500

450

400

350

300

250

200

150

100

50 L

-1000. 0 1000. 2000. 3000.

Time (s)

4000. 5000. 6000. 7000.

Fig. 8 : Primary system mass inventory

A2-4
VGrsI2.4 -04-27-aM

.10

T

I.

CL

.08

.06

.04

.02

0

-.02

-.04

-.06

-100

xxx V13=V1211000000

YYY EL06 PD9092AA

-4- Wx

0).

I

I I I I I I I I I I I | I ~- 1

0 1000. 2000. 3000.

Time (s)

4000. 5000. 6000. 7000.

Fig. 9 : Pressure difference between the entry and the exit of the intact

loop steam genarator

WWCW02.4- 7-V-1U8

.04

.03

.03

.02

.02

le

CL

CL .01

.01

0

-.01

3000.

Time (s)

7000.

Fig. 10 : Pressure difference in the ascending side of the loop seal of the

intact loop

A2-5

APPENDIX 3:

Results of the sensitivity calculation R02

WinGfr 2.4 .04-27-1IM

U

C.

£

=

U

S

a.

20.0

18.0

16.0

14.0

12.0

10.0

8.0

6.0

4.0

2.0

0o

-1000. 0 1000. 2000. 3000.

Time (s)

4000. 5000. 6000. 7000.

Fig. 1: Primary and secondary pressure

W"nGfZ .4-04-2?-1i9

800

700

600

500

400

300 I

E

200

100

0

-100

3000.

Time (s)

7000.

Fig. 2 Break integral flow rate

A3-1
VMGWaI 2.4. 04-27-I4M

1.00

.80

.60

- .40

.2 =' .20

II I I I I I I I I I I I I

XXX R02 MFLOWJ950000000

YYY V19=SMOOTH(DIFF(V18)

X, I

I i I I I I I I I I I I I I I

I.

0

-.20

-10(00. 0 1000. 2000. 3000.

rime (s)

4000. 5000. 6000. 7000.

Fig. 3 "Break mass flow rate

SWrW2.at4 -04-27-19N

700

Soo L

Soo L

4o0 L

- 300

I

XXX V48=lNT(V42)+INT(V43)

YYY V5l=lNT(V39)4(139.9-V36)

LPIS

ACC

-- -VXY~~~ -X 

I I I I~ I_ I I I I I I I I

200 I100 I0

-100 -1001

0. 0 1000. 2000. 3000. 4000. 5000. 6000. 7000.

Time (S)

Fig. 4 : Integrated mass injected in the primary system from the emergency

systems

A3-2
AC-lW 2.4 -04-27-19N

360

340

320 -

300 -

S. 280

260 -

E 240 O

220 _

180

160 I , I I , I

-1000. 0 1000. 2000. 3000.

Time (s)

Fig. 5 Rod surface temperature (bottom level)

7000.

IWtGraf2A .0-4-27-.19

I

650

600-

550

500-

450

400

350

300

250

200

-1000. 3000.

Time (s)

7000.

Fig. 6: Rod surface temperature (middle level)

A3-3
*•NGraf24 - 04-27-IN

1 400 A

1 350 -

300

250

200

150 ISO I I I I

-1000. 0 1000. 2000. 3000.

Time (s)

Fig. 7 Rod surface temperature (high level)

)

4WGra' . - 04-V-1998

a

550O

500 -

450

400 -

350

300 -

250 .

200 -

150 -

100 -

50 L

-1000. 3000.

Time (s)

7000.

Fig. 8 "Primary system mass inventory

A3-4
W•n.f 24 -04-27-1998

.08

.07

.06

T

ICLU

•2

0.

.05

.04

.03

.02

-. It 1 a I I I I I I I I I I I

-1000. 0 1000. 2000. 3000. 4000. 5000. 6000.

rime (s)

Fig. 9 Pressure difference between the entry and the exit of the intact

loop steam genarator

W~lrG'f 24.4-04-27-19m8

.04

.03

.03

.02

.02

.01

T

I.

.01

0

-1000. 0 1000. 2000. 3000.

Time (s)

4000. 5000. 6000. 7000.

Fig. 10 Pressure difference in the ascending side of the loop seal of the

intact loop

A3-5

APPENDIX 4:

Results of the sensitivity calculation R03

W& f12.4 - 0-27-Ifl8

20.0

18.0

16.0

14.0

12.0

e 10.0

£ 8.0

6.0

4.0

oLO

000

-1000. 0 1000. 2000. 3000.

Time(s)

4000. 5000. 6000. 7000.

Fig. 1: Primary and secondary pressure

WVnO4W2A .04.27.1g.

900

000 -

800

700

600

500

400

300

200

100

0

-100

-100

XXX R03 CNTRLVAR159

0.

m

0 1000. 2000. 3000. 4000. 5000. 6000. 7000.

Time (s)

Fig. 2 : Break integral flow rate

A4-1
W-nAufI4. 0-2.1"2IM

1.00

.80

.60

! .40

a• .20 .20

0

-.20

-101

*I I I I I I I I I I I I i

XXX R03 MFLOWJ950000000 -

YYY V19=SMOOTH(DIFF(VI8),

I --- - I - --- - I I I I I

5)

00. 00. 0 1000. 2000. 3000.

Time (s)

4000. 5000. 6000. 70

Fig. 3 : Break mass flow rate

VhiGra2.4.- 04-27.-19

900

800

700

600

,500

- 400

ai 300

200

100

0

-100

-101

II I I I III I I I I I

XXX V49=1NT(V44)+INT(V45)

YYY V51=INT(V39)+(139.9-V36)

- i LPIS

- I

- I ACC

- Y %/

I I I I I I I I I I I I I I

00. 1000. 2000. 3000. 4000. 5000. 6000. 7000.

Time (s)

Fig. 4 Integrated mass injected in the primary system from the emergency

systems

A4-2
WnGI2.4 - 04-27-1M

E• 275

250

E

225

200

175

150 i........... , I I I I I I

-1000. 0 1000. 2000. 3000.

Time (s)

Fig. 5 Rod surface temperature (bottom level)

600

550

500

450

400

350 - EA

300 -

250 -

200

150 -

-1000. 0 1000. 2000. 3000.

Time (s)

Fig. 6: Rod surface temperature (middle level)

7000.

A4-3
WM.iMraf 2.4 -04-27-190

600

550

500

450

400

350

300

8~

S

2

toa0

S

I250 [.

200 [

-1000. 0 1000. 2000. 3000.

Time (s)

4000. 5000. 6000. 7000.

Fig. 7 Rod surface temperature (high level)

MWnGrf 2.4-04-7-1906

550 --- T

500

450

400

350 -

S 300 .

200

150

IN - 100

50 L I

-1000. 0 1000. 2000. 3000.

Time (s)

Fig. 8: Primary system mass inventory

A4-4
VAnGr•f2.4-4-27-1SO8

S

A.

2

S

a

.09

.08

.07

.06

.05

.04

.03

.02

-.01 I I I

-1000. 0 1000. 2000. 3000. 4000.

lime (s)

Fig. 9 : Pressure difference between the entry and the

loop steam genarator

7000.

exit of the intact

NWGrf2.4 - 04-27-INS

.04

T

2L

C6

e

3000.

Time (s).

7000.

Fig. 10 Pressure difference in the ascending side of the loop seal of the

intact loop

A4-5

APPENDIX 5:

Results of the sensitivity calculation R04

W 4mf2A.404-27-1198

T.

IL

IL

20.0

18.0 .

16.0

14.0

12.0

10.0

8.0

6.0

4.0

2.0

0o

-1000. 0 1000. 2000. 3000.

Time (s)

4000. 5000. 6000. 7000.

Fig. 1: Primary and secondary pressure

In•Gnf 2.4 -.04-27-1Im8

800

700

600

500

400

300

a

IS

200

100

0

-100

3000.

Time (s)

7000.

Fig. 2: Break integral flow rate

A5-1
VdnuWut2A - 04.27-VM

1.00

.80

S .60

0 .40

•= .20

0

-.20

-100

Si I I I i I I I I I I

XXX R04 MFLOWJ950000000

YYY V19=-SMOOTH(DIFF(V18),

. Y ------

0O.

I I I i I I I I I I I I I I

0 1000. 2000. 3000. 4000.

Time (s)

5000. 6000. 7000.

Fig. 3 : Break mass flow rate

VWGrf2.4. 04-27-I O

700

600

S00

400

- 300

=I

XXX V5OI-NT(V46)+lNT(V47)

YYY V51=INT(V39)+(139.9-V36)

LPIACC

X I /Y -

x Y x YX xYW X Yx 

200

100

0

-100

-10000. 0 1000. 2000. 3000. 4000. 5000. 6000. 7000.

Time (s)

Fig. 4: Integrated mass injected in the primary system from the emergency

systems

A5-2
VWW~a2.4 -04-274MI

360

340

320

300

280

260

240

z

E

A

220

200 ISO F I

180 1

160 ..........I n i i i I I i

-1000. 0 1000. 2000. 3000.

Time (s)

Fig. 5 : Rod surface temperature (bottom level)

WOf 2-4 4-2?--1 M

i

650

600

650

500

450

400

350

300

250

200 .

150 L

-1000. 3000.

Time (s)

7000.

Fig. 6: Rod surface temperature (middle level)

A5-3
VbGqf2.4 -04-27-1NS

Soo

550

500

450

2 400

350 -

E

300

250

200

150 I I I I I I

-1000. 0 1000. 2000. 3000.

Time (S)

Fig. 7 Rod surface temperature (high level)

)

%MG024 - 04-27-4M

Io:E

550

500

450

400

350

300

250

200

150

100

50 L

41000. 0 1000. 2000. 3000.

Time (s)

4000. 5000. 6000. 7000.

Fig. 8 : Primary system mass inventory

A5-4
WJ.UrI 2A -04-27-19H

.09

.08 .

.07 .

.06 .

~.05

== .04

C6 .03

__ --

L

XXX V13--V12/1000000

YYY EL06 PD9092AM

* , - X-4

I I I I I I I IA t*,,

E

.02 L

.01

0

-.01 /

-1000. 0 1000. 2000. 3000. 4000. 5000. 6000. 7000.

Time (s)

Fig. 9: Pressure difference between the entry and the exit of the intact

loop steam genarator

VW4ef 2.4- *4-2I-II

n-7

,.J5

.05 L

.os L

U

S.

I

I.

a

.04 L

.03 L

I f I I III I I I I I I I I

xxx V15=-V1411000000 YYY EL06 PD1714

I I I I I I I I I I I I I I

.02 L

.01 I0

-.01 L

-1000. 0 1000. 2000. 3000. 4000. 5000. 6000.

Time (s)

7000.

Fig. 10 Pressure difference in the ascending side of the loop seal of the

intact loop

A5-5

APPENDIX 6:

Short overview of the UMAE basic principles

Short overview of the UMAE basic principles

Different methods have been proposed to quantify the accuracy of

thermal-hydraulic codes. Although these methods were able to give

information about the accuracy, some were not considered satisfactory

because they involved some empiricism and were lacking of a precise

mathematical meaning. Besides, engineering subjective judgment is almost

always present in these methods.

Generally, the starting point of each method is an error function, through

which the accuracy is evaluated. The error function should respond to

these requirements:

1) to be independent upon the transient duration;

2) its values should be normalized;

3) at any time of the transient this function should remember the previous

history;

4) engineering judgment should be avoided or reduced;

5) the mathematical formulation should be simple and the function should

be non-dimensional.

The UMAE (Uncertainty Methodology based on Accuracy Extrapolation)

is a methodology suitable for evaluating the uncertainty in the prediction

of transient scenarios in nuclear reactors when carried out by thermalhydraulic system codes. It is based on the extrapolation of the accuracy

resulting from a comparison between code results and relevant

experimental data obtained in small scale facilities.

To apply the UMAE must be verified the following conditions:

- the code must be qualified;

- the experimental data have to reproduce the same phenomena expected in

the real plant;

- the nodalizzation has to be qualified;

- the experimental data has to be relative to facility of different scale, but

characterized by the same scaling philosophy;

- the experiments must be qualified.

As already tells, the basic idea of the UMAE methodology, is to get the

uncertainty from considering the accuracy.

The simplest formulation about the accuracy of a given code calculation,

with reference to the experimental measured trend, is obtained by the

difference function

A6-1
AF(t) =Fk(t)-F.P(t)

(1)

To get a limited number of values that give an overall judgment about

accuracy, it should be resorted to the integration of the function (1). Such

integration however it would give a partial information because some

interesting details could be lost, for example the presence of perturbations

would be hidden for effects of compensation. So it may be useful to study

the same phenomenon from other points of view, time independent.

A mathematical algorithm that can translate a given time function, in a

corresponding complex function is the Fourier transform.

For the calculation of Fourier transform exists a specific procedure of

calculation call FFT (Fast Fourier Trasform).

The FFT procedure is a mathematical tool through which is possible to

analyze and to compare, in objective manner, calculated and experimental

quantity that are time functions passing in the frequency domain.

In particular, the FFT methodology, applied to the error function AF(t),

defined from the equation (1), defines two values characterizing each

calculation:

" a dimensionless average amplitude

20

AA = 2--O

n-0

" a weighted frequency

2-

WF = n-0

_ 20 3F([f, .f

ri-0

The AA factor can be considered a sort of "average fractional error", it

represents the relative magnitude of the discrepancy deriving from the

comparison between the calculated and the corresponding experimental

trend of each parameter.

A6-2
The weighted frequency WF gives an idea of the frequencies related with

the inaccuracy so it represents the type of error. A small value for WF

means that the discrepancy between the measured and calculated trends is

more important at low frequencies; when WF is large, the discrepancy

comes from various kinds of noise and consequently is less important. So

better accuracy is realized for low values of AA associated to large values

of WF.

Trying to give an overall picture of the accuracy of a given calculation, it

is required to combine the information obtained for the single parameters

into average indexes of performance.

This is obtained by defining the following quantities:

N va

(AA),, = (A), (wf),

i=1

N var

(WF),o, = (WF), (w ),

I-I

with

N vv

where

-Nv, is the number of selected parameters to which the method has been

applied)

-(wf)i are weighting factors introduced for each parameter, to take into

account their importance from the viewpoint of safety analyses.

For like the factor AAt has been defined, it is deduced that lower is his

value better is the accuracy of the analyzed calculation. From this it

springs the following acceptability criterion:

AAw<K

where K is an acceptability factor valid for the whole transient. Based on

experience gathered in previous applications of this methodology, K=0.4

has been chosen as the reference value that identifies the acceptable

accuracy of a code calculation. Because, from precedents applications of

the FFT, it was been noticed that results in the range:

1. A,: < 0.3 represent a very good simulation;

A6-3
2. 0.3 < A4, < 0.5 represent a good simulation;

3. 0.5•5 A4, < 0.7 represent a poor simulation;

4. M,,, > 0.7 represent a very poor simulation.

The same criterion can be used to evaluate the code capability in a single

parameter prediction. In particular, an acceptability factor K=O.l has been

fixed for the primary pressure because of its importance.

A6-4
APPENDIX 7:

Input deck

*lobi-mod2 test bl-06 - 1% Cold Leg Break LOCA, MCP s

on

oe

* revised base input deck

*-> relap51mod3.2.1

***** post-test calculation *

0000100 new transnt

0000101 run

0000102 si

0000104 cmpress

0000105 10.0 11.0

0000110 nitrogen

* time step control cards ***********5*** S***************5***5** ****** e

201 500. 1.e-7 0.05 3 400 5000 5000

202 610. L.e-7 0.05 3 100 1000 1000

203 3000. l.e-7 0.025 3 1000 2000020000

204 3700. l.e-7 0.01 3 1250 10000 10000

205 4160. L.e-7 0.025 3 500 40004000

206 6350. l.e-7 0.05 3 250 20002000

207 6425. l.e-7 0.01 3 1250 10000 10000

208 7400. L.e-7 0.01 3 1250 50000 50000

* minor edit variables * ******** sas. e.ss.*.0s.0.*************s.8.8.*******s

301 p 355010000 * upper plenum

302 p 560010000 * intact loop sg

303 p 660010000 * bl sg

304 cntrlvar 550 * il sg dc level

305 cntrlvar 650 * bi sg dc level

306 mflowj 330000000 * core inlet

307 pmpvel 135 * pump il

308 pmpvel 225 * pump bl

309 cntrivar 999 * primary fluid mass

310 cntrivar 500 * il sg fluid mass

311 cntrivar 600 * bl sg fluid mass

312 cntrlvar 530 * il sgrr error

313 cntrlvar 630 $ bl sg rr error

314 httemp 335100105 * htr.rod temp:lvl 2

315 httemp 335200105 S htrrod temp:lvl 4

316 httemp 335300205 * htr.rod temp:Ivl7/8

317 httemp 335500105 * htr.rod temp:lvl 9

318 httemp 335600105 * htr.rod temp:lvl 11

320 tempf 100010000

321 tempf 140010000

322 tempf 200010000

323 tempf 240010000

324 cntrivar 92 * il beat losses

325 cntrIvar 94 * blheat losses

326 cntrlvar 96 * steam line heat losses

327 cnrlvar 750 * primary system heat losses

328 cntrlvar 80 total input power to primary

329 cntrIvar 90 * total power removed from primary

330 cntrlvar 22 *power removed from sg-1

331 cntdvar 24 * power removed from sg-2

332 mflowj 580000000 * steam line flow

333 entrlvar 560

* variable trips *5** *5****5**  5** ****** **** *5**5**5** * S****** 5****

501 p 350010000 le null 0 42.1e6 I

502 cntrivar 158 gt null 0 125. 1

503 p 350010000 le null 0 131.0e5 i]SCRAM

504 time 0 ge timeof 688 60.0 n

505 time 0 ge null 0 500.0 I

506

507

508

509

510

511

512

513

515

516

time

time

time

time

time

time

time

time

time

time

0 It null 0 160.0 n

0 ge null 0 5000.0 1 * lp drain

0 ge null 0 0.0 I

0 It null 0 400.0 n

0 It timeof 688 25.0 n

0 gt null 0 1.0e9 I

0 ge timeof 503 0.0 I

0 ge timeof 505 0.5 I

0 ge timcof 620 50. n

0 le timeof 620 60. n

517 p 350010000 ge null 0 131.OeS n

522 time 0 ge null 0 -1.0 I

525 time 0 le null 0 2950.0 I

526 httemp 335100105 ge null 0 646.15 n

527 httemp 335200105 ge null 0 646.15 n

528 httemp 335300105 ge null 0 646.15 n

529 httemp 335300205 ge null 0 646.15 n

530 httemp 335500105 ge null 0 646.15 n

531 httemp 335600105 ge null 0 646.15 n

532 time 0 ge null 0 500.0 I

534 httemp 335100105 ge null 0 685.15 n

535 httemp 335200105 ge null 0 685.15 n

536 httemp 335300105 ge null 0 685.15 n

537 httemp 335300205 ge null 0 685.15 n

538 httemp 335500105 ge null 0 685.15 n

539 httemp 335600105 ge null 0 685.15 n

540 p 350010000 le null 0 25.Oc5 n

551 time 0 ge timeof 503 72.0 I

552 p 660010000 le null 0 21.Oc5 I

553 httemp 335100105 ge null 0 745.15 n

554 httemp 335200105 ge null 0 745.15 n

555 httemp 335300105 ge null 0 745.15 n

556 httemp 335300205 ge null 0 745.15 n

557 httemp 335500105 ge null 0 745.15 n

558 httemp 335600105 ge null 0 745.15 n

560 httemp 335100105 ge null 0 704.15 n

561 httemp 335200105 ge null 0 704.15 n

562 httemp 335300105 ge null 0 704.15 n

563 httemp 335300205 ge null 0 704.15 n

564 httemp 335500105 ge null 0 704.15 n

565 httemp 335600105 ge null 0 704.15 n

575 time 0 It null 0 500.0 n

590 time 0 ge timeof 6204.0 I

591 time 0 ge timeof 590 5.0 I

592 time 0 ge timeof 640 0. n

593 time 0 le timeof 640 10. n

* logical trips *

* logical & variable trips used in combination to

* allow more complex generalised trips to be used *

601 592 and 593 n

602 515 and 516 n

603 -517 and-517 I

605 534 or 535 n

606 536 or 537 n

607 538 or 539 n

608 605 or 606 n

609 607 or 608 n

610 608 or 609 n

620 610 and 501 1

621 -620 and -620 n

622 -620 and -620 n

631 501 and 531 n

633 560 or 561 n

634 562 or 563 n

635 564 or 565 n

636 633 or 634 n

637 635 or 636 n

638 636 or 637 n

A7-1
639 638 and 540 n

640 507 and 639 1

641 620 and 620 1

642 620 and 620 I

643 526 or 527 n

644 528 or 529 n

645 530 or 531 n

646 643 or 644 n

647 645 or 646 n

648 646 or 647 n

649 648 and 540 n

650 507 and 649 1

651 650 and -504 n

654 552 and 551 n

661 505 and -662 n

662 505 and 505 I

664 -503 and -503 n

665 552 and -666 n

666 552 and 552 1

675 -575 or -575 n

681 553 or 554 n

682 555 or 556 n

683 557 or 558 n

684 681 or 682 n

685 683 or 684 n

686 684 or 685 n

687 686 and 540 n

688 687 and 507 1

690 590 and -591 n

1100201 0.0 1

1100301 1.600 1

1100302 0.628 2

1100401 0.0 2

1100501 0.0 2

1100601 +6.892 1

1100602 +90.0 2

1100701 +0.192 1

1100702 +0.628 2

1100801 2.3d-5 0.0737 2

1100901 0.164 0.164 1

1101001 00 2

1101101 0000 1

1101201 3 158.00d+5 599.15 0.0 0.0 0.02

1101300 1

1101301 21.00 0.0 0.0 1

* steam generator inlet *

1150000 sginil sngljun

1150101 110010000 1200000000.0 0.0 0.0 100100

1150110 0. 0. 0.4 0.8

1150201 1 21.00 0.0 0.0

* steam generator primary side *

* fine nodalisation at lower part of sg u-tubes *

*

*

*

*

*

intact loop 0

pressure vessel outlet -sp I I

1000000 voutil snglvol

1000101 42.660d-4 0.736 0.0 0.0 +0.0

1000102 +0.0 2.3d-5 0.0737 00

1000200 3 158.00d+5 599.15

* pressurizer connection tee

1050000 prcoil branch

1050001 3 1

1050101 42.660d-4 0.745 0.0 0.0 +0.0

1050102 +0.0 2.3d-5 0.0737 00

1050200 3 158.00d+5 599.15

1051101 100010000 105000000 42.660d-4 033 0.33

0000

1052101 105010000 11000000042.660d.40.0 0.0

0000

1053101 400010000 105000000 1.3685d-4 0.0 0.0

0100

1051201 21.00 0.0 0.0

1052201 21.00 0.0 0.0

1053201 0.0 0.0 0.0

* steam generator inlet piping - spI2

1100000 sgipil pipe

1100001 2.

1100101 42.660d-42

1200000 sgprU pipe

1200001 46

1200101 109.36d-4 1

1200102 0.0 2

1200103 72.413d-4 44

1200104 0.0 45

1200105 109.36d-4 46

1200201 0.0 45

1200301 1.763 1

1200302 0.306 2

1200303 0.1475 6

1200304 0.125 10

1200305 0.250 14

1200306 0.500 22

1200307 1.014832 24

1200308 0.500 32

1200309 0.25 36

1200310 0.1250 40

1200311 0.1475 44

1200312 0.306 45

1200313 1.763 46

1200401 0.0 1

1200402 9.932d-3 2

1200403 0.0 44

1200404 9.932d-3 45

1200405 0.0 46

1200501 0.0 46

1200601 +90.0 22

1200602 +87.50 23

1200603 -47.50 24

1200604 -90.0 46

1200701 +1.763 1

1200702 +0.306 2

1200703 +0.1475 6

1200704 +0.125 10

1200705 +0.250 14

1200706 +0.500 22

1200707 +0.907696 23

1200708 -0.90769624

A7-2
1200709 -0.500 32

1200710 -0.250 36

1200711 -0.125 40

1200712 -0.1475 44

1200713 -0.306 45

1200714 -1.763 46

1200801 2.3d-5 0.118 1

1200802 2.3d-5 0.176695 2

1200803 0.0 0.0196 44

1200804 2.3d-5 0.176695 45

1200805 2.3d-5 0.118 46

1200901 0.0 0.0 1

1200902 0.0 0.0 2

1200903 0.0 0.0 22

1200904 0.120 0.120 23

1200905 0.0 0.0 43

1200906 0.0 0.0 44

1200907 0.0 0.0 45

1201001 00 46

1201101 0100 2

1201102 0000 43

1201103 0100 45

1201201 3 158.00d+5 599.15 0.0 0.0 0.02

1201202 3 158.00d+5 593.00 0.0 0.0 0.0 14

1201203 3 158.00d+5 588.00 0.0 0.0 0.0 18

1201204 3 158.00d+5 583.00 0.0 0.0 0.022

1201205 3 158.00d+5 579.00 0.0 0.0 0.023

1201206 3 158.00d+5 575.00 0.0 0.0 0.024

1201207 3 158.00d+5 572.00 0.0 0.0 0.028

1201208 3 158.00d+5 569.00 0.0 0.0 0.032

1201209 3 158.00d+5 565.15 0.0 0.0 0.046

1201300 1

1201301 21.00 0.0 0.0 45

* steam generator suction leg *

1250000 sgouil sngljun

1250101 120010000 130000000 0.0 0.0 0.0 0000

1250201 1 21.00 0.0 0.0 *5*5**** ***************** 55 * * *5* ***6*5*5* *5* ***

* loop seal *

1300000 Iscalil pipe

1300001 5

1300101 42.660d-4 5

1300201 0.0 4

1300301 1.030 1

1300302 0.769 2

1300303 1.611 3

1300304 0.625 4

1300305 1.611 5

1300401 0.0 5

1300501 0.0 5

1300601 -90.0 2

1300602 -87.15 3

1300603 0.0 4

1300604 +87.55 5

1300701 -1.030 1

1300702 -0.769 2

1300703 -1.545 3

1300704 0.0 4

1300705 +1.545 5

1300801 2.3d-5 0.0737 5

1300901 0.0 0.0 2

1300902 0.20 0.20 3

1300903 0.20 0.20 4

1301001 00 5

1301101 0000 4

1301201 3 158.00d+5 565.15 0.0 0.0 0.05

1301300 1

1301301 21.00 0.0 0.0 4

* pump inlet volume *

1330000 pinil branch

1330001 1 I

1330101 42.660d-4 0.769 0.0 0.0 +90.0

1330102 +0.769 2.3d-5 0.0737 00

1330200 3 158.00d+5 565.15

1331101 130010000 1330000000.0 0.0 0.0 0000

1331201 21.00 0.0 0.0

pump intact loop *

1350000 pumpil pump

1350101 33.183d-4 0.6027 0.0 0.0 +90.0

1350102 +0.210 1

1350108 133010000 42.660d-4 0.06 0.02 0000

1350109 137000000 42.660d-4 0.02 0.06 0000

1350200 3 158.00d+5 565.15

1350201 1 21.00 0.0 0.0

1350202 1 21.00 0.0 0.0

1350301 0 0 0 -1 0 522 1

1350302 745.605 0.63280 0.0280 139.9 45.47

-1350303 1.444 747.3 0.0 0.0 0.0

1350304 0.0 0.0

1350310 0.0 0.0 0.0

* cold leg pipe - pump outlet *

1370000 poutil branch

1370001 1 1

1370101 42.660d-4 0.739 0.0 0.0 +0.0

1370102 +0.0 2.3d-5 0.0737 00

1370200 3 158.00d+5 565.15

1371101 137010000 140000000 0.0 0.0 0.0 0000

1371201 21.00 0.0 0.0

* pump seal water common manifold intact loop pump

1380000 pswilman branch

1380001 1 1

1380101 3.0d-4 5.0 0.0 0.0 -0.0

1380102 +0.0 0.0 0.02 00

1380200 3 158.00d+5 373.15

1381101 138010000 1330100000.0 0.0 1.0e6 0000

1381201 0.75d-2 0.0 0.0

* cold leg pipe

1400000 clpiil pipe

1400001 2

1400101 42.660d-4 2

1400201 0.0 1

1400301 1.162 2

1400401 0.0 2

1400501 0.0 2

1400601 0.0 2

1400701 +0.0 2

1400801 2.3d-5 0.0737 2

A7-3
1400901 0.0 0.0 1

1401001 00 2

1401101 0000 1

1401201 3 158.00d+5 565.15 0.0 0.0 0.0 2

1401300 1

1401301 21.00 0.0 0.0 1

* pressure vessel inlet * * *5* *5*5*** *55**5*5 5* ******************* 5 5*55 *5* **

1450000 vinil branch

1450001 I 1

1450101 42.660d-4 0.841 0.0 0.0 +0.0

1450102 +0.0 2.3d-5 0.0737 00

1450200 3 158.00d+5 565.15

1451101 140010000 145000000 0.0 0.0 0.0 0000

1451201 21.00 0.0 0.0

**sss**************s**************ss***********5**

*

*

S

broken loop *

0

* pressure vessel outlet - sp21 *

2000000 voutbl snglvol

2000101 16.691d-4 0.749 0.0 0.0 +0.0

2000102 +0.0 2.3d-5 0.0461 00

2000200 3 158.00d+5 599.15

5**S*********************.******5*5*5*5*******5****

* pressurizer connection tee *

2030000 prcobl branch

2030001 2 1

2030101 16.69 1d-4 0.865 0.0 0.0 +0.0

2030102 +0.0 2.3d-5 0.0461 00

2030200 3 158.00d+5 599.15

2031101 200010000 203000000 16.691d-4 0.12 0.12

0000

2032101 203010000 206000000 16.691d-4 0.05 0.05

0000

2031201 7.00 0.0 0.0

2032201 7.00 0.0 0.0

* steam generator inlet piping - sp22 *

2060000 sgipbl pipe

2060001 3

2060101 16.691d-4 3

2060201 0.0 2

2060301 0.666 2

2060302 0.686 3

2060401 0.0 3

2060501 0.0 3

2060601 +0.0 1

2060602 +13.46 2

2060603 +90.0 3

2060701 +0.0 1

2060702 +0.155 2

2060703 +0.686 3

2060801 2.3d-5 0.0461 3

2060901 0.10 0.10 1

2060902 0.80 0.80 2

2061001 00 3

2061101 000000 2

2061201 3 158.00d+5 599.15 0.0 0.0 0.0 3

2061300 1

2061301 7.00 0.0 0.0 2

* steam generator inlet

2080000 sginbl sngljun

2080101 206010000 210000000 16.691d-4 0.35 0.16

100000

2080110 0. 0. 0.4 0.8

2080201 1 7.00 0.0 0.0

* steam generator primary side *

* fine nodalisation at lower part of sg u-tubes *

2100000 sgprbl pipe

2100001 26

2100101 36.745d-4 1

2100102 0.0 2

2100103 24.138d-4 24

2100104 0.0 25

2100105 36.745d4 26

2100201 0.0 25

2100301 1.884 1

2100302 0.192 2

2100303 0.280 4

2100304 0.250 6

2100305 0.500 8

2100306 1.000 12

2100307 1.012322 14

2100308 1.000 18

2100309 0.500 20

2100310 0.250 22

2100311 0.280 24

2100312 0.192 25

2100313 1.884 26

2100401 0.0 1

2100402 2.700934-3 2

2100403 0.0 24

2100404 2.70093d-3 25

2100405 0.0 26

2100501 0.0 26

2100601 +90.0 12

2100602 +88.06 13

2100603 -88.06 14

2100604 -90.00 26

2100701 +1.884 1

2100702 +0.192 2

2100703 +0.280 4

2100704 +0.250 6

2100705 +0.500 8

2100706 +1.000 12

2100707 +0.906098 13

2100708 -0.906098 14

2100709 -1.000 18

2100710 -0.500 20

2100711 -0.250 22

2100712 -0.280 24

2100713 -0.192 25

2100714 -1.884 26

2100801 2.3d-5 0.0684 1

2100802 23d-5 0.1134163 2

2100803 0.0 0.0196 24

2100804 2.3d-5 0.1134163 25

A7-4
2100805 2.3d-5 0.0684 26

2100901 0.0 0.0 I

2100902 0.25 0.25 2

2100903 0.0 0.0 12

2100904 0.142 0.142 13

2100905 0.0 0.0 23

2100906 0.25 0.25 24

2100907 0.0 0.0 25

2101001 00 26

2101101 0100 2

2101102 0000 23

2101103 0100 25

2101201 3 158.00d+5 599.15 0.0 0.0 0.02

2101202 3 158.00d+5 593.00 0.0 0.0 0.0 8

2101203 3 158.00d+5 587.00 0.0 0.0 0.0 10

2101204 3 158.00d+5 582.00 0.0 0.0 0.0 12

2101205 3 158.00d+5 577.00 0.0 0.0 0.0 13

2101206 3 158.00d+5 573.00 0.0 0.0 0.0 14

2101207 3 158.00d+5 571.00 0.0 0.0 0.0 15

2101208 3 158.00d+5 569.00 0.0 0.0 0.0 17

2101209 3 158.00d+5 565.15 0.0 0.0 0.026

2101300 1

2101301 7.00 0.0 0.0 25

* steam generator outlet *

2150000 sgoubl sngljun

2150101 210010000 220000000 0.0 0.0 0.0 0000

2150201 1 7.00 0.0 0.0

* loop seal *

2200000 Isealbl pipe

2200001 5

2200101 16.691d-4 5

2200201 16.691d-4 4

2200301 1.042 1

2200302 1.153 2

2200303 0.741 3

2200304 0.732 4

2200305 0.741 5

2200401 0.0 5

2200501 0.0 5

2200601 -90.0 2

2200602 -79.17 3

2200603 0.0 4

2200604 +79.17 5

2200701 -1.042 1

2200702 -1.153 2

2200703 -0.622 3

2200704 0.0 4

2200705 +0.622 5

2200801 2.3d-5 0.0461 5

2200901 0.0 0.0 2

2200902 0.30 0.30 3

2200903 0.30 0.30 4

2201001 00 5

2201101 0000 4

2201201 3 158.00d+5 565.72 0.0 0.0 0.05

2201300 1

2201301 7.00 0.0 0.0 4

* pump inlet volume *

2230000 pinbl branch

2230001 1 1

2230101 16.691d-4 1.153 0.0 0.0 +90.0

2230102 +1.153 2.3d-5 0.0461 00

2230200 3 158.00d+5 565.72

2231101 2200100002230000000.0 0.0 0.0 0000

2231201 7.00 0.0 0.0

* pump broken loop *

2250000 pumpbl pump

2250101 33.183d-4 0.603 0.0 0.0 +90.0

2250102 +0201 1

2250108 223010000 0.0 - 0.03 0.08 0000

2250109 230000000 0.0 0.08 0.03 0000

2250200 3 158.00d+5 565.72

2250201 1 7.00 0.0 0.0

2250202 1 7.00 0.0 0.0

2250301 135 135 135 -1 0 522 1

2250302 745.605 0.44973 0.028 139.9 45.47

2250303 1.444 747.3 0.0 0.0 0.0

2250304 0.0 0.0

2250310 0.0 0.0 0.0

* pump seal water common manifold broken loop pump

2280000 pswblman branch

2280001 1 1

2280101 3.Od-4 5.0 0.0 0.0 +0.0

2280102 +0.0 0.0 0.02 00

2280200 3 158.00d+5 373.15

2281101 2280100002230100000.0 0.0 1.0e6 0000

2281201 0.50d-2 0.0 0.0

* cold leg pipe -pump outlet *

2300000 poutbl branch

2300001 0 1

2300101 16.691d-4 0.860 0.0 0.0 +0.0

2300102 +0.0 2.3d-5 0.0461 00

2300200 3 158.00d+5 565.15

* cold leg pipe - pump side

2400000 collbi branch

2400001 1 1

2400101 16.691d-4 1.263 0.0 0.0 +0.0

2400102 +0.0 2.3d-5 0.0461 00

2400200 3 158.00d+5 565.15

2401101 240010000 250000000 16.691d-4 0.0 0.0

0000

2401201 7.00 0.0 0.0 **** *** ***f* *festric**** ***** .*co**nto*l***

* penta valve flow restrictor& controller *

2350000 pentavlv valve

2350101 230010000 240000000 16.691d-4 0.3

0100

2350102 1.0 1.0

2350201 1 7.0 0.0 0.0

2350300 mtrvlv

2350301 511 690 0.162308 1.0

0.3

A7-5
* cold leg pipe - rpv side *

2500000 col2bl snglvol

2500101 16.691d-4 0.91 0.0 0.0 +0.0

2500102 +0.0 2.3d-5 0.0461 00

2500200 3 158.00d+5 565.15

2550000 col3bl sngljun

2550101 250010000 260000000 16.691d-4 0.37 0.37

0000

2550102 1.0 1.0

2550201 I 7.00 0.0 0.0

* vessel inlet - sp 26 *

2600000 veinbl branch

2600001 0

2600201 16.691d-4 0.704 0.0 0.0 +0.0

2600102 +0,0 2.3d-5 0.0461 00

2600200 3 158.00d+5 565.15

*

*

*

*

S

pressure vessel

*

* downcomer - above nozzle center line

*5**

3000000 updownc branch

3000001 0

3000101 113.10d-40.315 0.0 0.0 +90.0

3000102 +0.315 2.3d-5 0.024 00

3000200 3 158.00d+5 566.63

*5**S

* downcomer upper annulus - below centre line *

3050000 updownc branch

3050001 4 1

3050101 113.10d-40.487 0.0 0.0 -90.00

3050102 -0.487 2.3d-5 0.0240 00

3050200 3 158.00d+5 566.68

3051101 145010000 305000000 42.660d-4 3.55 3.55

0000

3052101 260010000 305000000 16.691d-4 3.24 3.24

0000

3053101 305010000 310000000 113.10d-4 0.0 0.0

0000

3054101 305000000300000000 113.10d-4 0.0 0.0

0000

3051201 21.00 0.0 0.0

3052201 7.00 0.0 0.0

3053201 28.00 0.0 0.0

3054201 0.0 0.0 0.0

* downcomer *

3100000 downc annulus

3100001 10

3100101 113.10d-4 10

3100201 113.10d-4 9

3100301 0.600 2

3100302 0.740 3

3100303 0.663 4

3100304 0.875 6

3100305 0.663 7

3100306 0.612 8

3100307 0.390 9

3100308 0.616 10

3100401 0.0 10

3100501 0.0 10

3100601 -90.0 10

3100701 -0.600 2

3100702 -0.740 3

3100703 -0.663 4

3100704 -0.875 6

3100705 -0.663 7

3100706 -0.612 8

3100707 -0.390 9

3100708 -0.616 10

3100801 5.3d-6 0.024 10

3100901 0.0 0.0 9

3101001 00 10

3101101 0000 9

3101201 3 158.00d+5 566.71 0.0 . 0.0 0.0 10

3101300 1

3101301 28.00 0.0 0.0 9

* lower plenum - upper part

3150000 loplup branch

3150001 3 1

3150101 764.54d-4 0.175 0.0 0.0 +90.0

3150102 +0.175 2-3d-5 0.312 00

3150200 3 158.00d+5 566.70

3151101 310010000315010000 113.10d-4 1.0 1.0

0100

3152101 315010000 325000000 240.53d-4 4.5 4.5

0100

3153101 315000000 320000000 764.544-4 0.0 0.0

0000

3151201 28.0 0.0 0.0

3152201 28.00 0.0 0.0

3153201 0.0 0.0 0.0

* lower plenum - lower part *

3200000 Iopllp branch

3200001 0 1

3200101 764.54d-4 0.175 0.0 0.0 -90.0

3200102 -0.175 2.3d-5 0.312 00

3200200 3 158.00d+5 565.27

* core inlet box *

3250000 comb pipe

3250001 2

3250101 240.53d-4 1

3250102 230.29d-4 2

3250201 230.29d-4 1

3250301 0.616 1

3250302 0.390 2

3250401 0.0 2

3250501 0.0 2

3250601 +90.00 2

A7-6
3250701 +0.616 1

3250702 +0.390 2

3250801 2.3d-5 0.175 1

3250802 2.3d-5 0.0632 2

3250901 0.0 0.0 1

3251001 00 2

3251101 0100 1

3251201 3 158.00d+5 565.50 0.0 0.0 0.02

3251300 1

3251301 28.00 0.0 0.0 1

* core inlet junction *

3300000 corinj sngljun

3300101 325010000 335000000 81.152d-4 1.77 1.77

3300102 0100

3300201 1 28.00 0.0 0.0

* core region

3350000 correg pipe

3350001 6

3350101 81.152d-4 6

3350201 81'.152d-4 5

3350301 0.612 1

3350302 0.663 2

3350303 0.875 4

3350304 0.663 5

3350305 0.740 6

3350401 0.0 6

3350501 0.0 6

3350601 +90.0 6

3350701 +0.612 1

3350702 +0.663 2

3350703 +0.875 4

3350704 +0.663 5

3350705 +0.740 6

3350801 0.0 0.0123 6

3350901 0.5 0.5 1

3350902 0.8 0.8 4

3350903 0.5 0.5 5

3351001 00 6

3351101 0000 5

3351201 3 158.00d+5 571.05 0.0 0.0 0.0 1

3351202 3 158.00d+5 576.11 0.0 0.0 0.02

3351203 3 158.00od+5 584.03 0.0 0.0 0.03

3351204 3 158.00d+5 591.66 0.0 0.0 0.04

3351205 3 158.00d+5 596.22 0.0 0.0 0.05

3351206 3 158.00d+5 598.63 0.0 0.0 0.06

3351300 1

3351301 28.00 0.0 0.0 5

* core outletjunction *

3400000 corouj sngljun

3400101 335010000 345000000 81.152d-4 1.2 1.2

3400102 0100

3400201 1 28.00 0.0 0.0

* upper plenum - lower part *

3450000 uppllo pipe

3450001 2

3450101 249.82d-4 2

3450201 249.82d-4 1

3450301 0.600 2

3450401 0.0 2

3450501 0.0 2

3450601 +90.0 2

3450701 +0.60 2

3450801 5.Od-5 0.0359 2

3450901 0.0 0.0 1

3451001 00 2

3451101 0000 1

3451201 3 158.00d+5 599.55 0.0 0.0 0.02

3451300 1

3451301 28.00 0.0 0.0 I

* upper plenum - intermediate part *

3500000 upplin branch

3500001 4 1

3500101 249.82d-4 0.487 0.0 0.0 +90.0

3500102 +0.487 5.Od-5 0.0359 00

3501101 345010000 350000000 249.82d-4 0.0 0.0

0000

3502101 350010000 100000000 42.660d-4 0.94 0.94

0000

3503101 350010000 200000000 16.691d-4 1.54 1.54

0000

3504101 355010000 350010000 249.82d-4 0.0 0.0

.0000

3501201 28.00 0.0 0.0

3502201 21.00 0.0 0.0

3503201 7.00 0.0 0.0

3504201 0.0 0.0 0.0

3500200 3 158.00d+5 599.10

* upper plenum - upper part *

3550000 upplup branch

3550001 0

3550101 249.82d-4 0.315 0.0 0.0 -90.0

3550102 -0.315 5.0d-5 0.0359 00

3550200 3 158.00d+5 574.16

* bypass, downcomer to upper plenum, via two paths:- *

* :two 5.0mm dia holes Ounction 35200- 1.3%)

* :gap around hot leg nozzles (junction 35300 = 2.2%) *

* based on total loop flowrate of 28kg/s *

5***

3520000 dcholes sngljun

3520101 300010000 355000000 1.131d-2 215654.0

215654.0

3520102 0000

3520201 1 0.0 0.0 0.0

3530000 dcgap sngljun

3530101 305000000350010000 1.131d-2 81388.0 81388.0

3530102 0000

3530201 1 0.0 0.0 0.0

* isolation valve, upper plenum to upper head pipework *

* valve closes 240 sec before start of transient *

3640000 uhvalve valve

3640101 363010000 365000000 3.1416d-4 10.0 10.0

0000

3640102 1.0 1.0

A7-7
3640201 1 0.0 0.0 0.0

3640300 trpvlv

3640301 506

* pump scalwater drain from upper plenum *

* valve closes at start of blowdown, time - 0.0 see *

3580000 upbleed tmdpjun

3580101 355000000 360000000 6.Od-4

3580200 1 575 cntrlvar 755

3580201 -5.0 0.0 0.0 0.0

3580202 0.0 0.0 0.0 0.0

3580203 0.01 0.10 0.0 0.0

3580204 5.0 0.10 0.0 0.0 S.**********e*****************************

* pump sealwater drain from lower plenum *

* valve opens at start of blowdown, time = 0.0 sec *

3590000 lpbleed tmdpjun

3590101 320000000 361000000 6.Od.4

3590200 1 505 cntrlvar 760

3590201 0.0 0.0 0.0 0.0

3590202 1.0 1.0 0.0 0.0

* pump seal bleed flow reservoir - upper plenum drain *

3600000 upbleedr tmdpvol

3600101 1.0 0.5 0.0 0.0 +90.0

3600102 +0.5 0.0 0.0 00

3600200 3 508

3600201 0.0 1.Od5 298.0

3600202 10000.0 1.OdS 298.0

* pump seal bleed flow reservoir - lower plenum drain

3610000 lpbleedr tmdpvol

3610101 1.0 0.5 0.0 0.0 +90.0

3610102 +0.5 0.0 0.0 00

3610200 3 508

3610201 0.0 I.OdS 298.0

3610202 10000.0 l.OdS 298.0

* connecting pipes to upper head *

3630000 uphepil branch

3630001 2 1

3630101 3.1416d-4 1.416 0.0 0.0 +65.31

3630102 +0.970 1.Od-5 0.020 00

3630200 3 158.005 566.62

3631101 300010000 363000000 3.1416d-4 23.0 23.0

0100

3632101 363010000 375010000 3.1416d-4 83.0 83.0

0000

3631201 0.0 0.0 0.0

3632201 0.0 0.0 0.0

3650000 uphepi2 branch

3650001 1 1

3650101 3.1416d-4 3.169 0.0 0.0 +54.04

3650102 +2.565 1.0d-5 0.020 00

3650200 3 158.00d+5 566.61

3651101 365010000 370000000 3.1416d-4 2.0 2.0

0000

3651201 0.0 0.0 0.0

* upper head vessel *

3700000 upheves pipe

3700001 2

3700101 113.1Od-4 2

3700201 113.10d-4 1

3700301 0.855 2

3700401 0.0 2

3700501 0.0 2

3700601 -90.0 2

3700701 -0.855 2

3700801 2.3d-5 0.120 2

3700901 0.0 0.0 1

3701001 00 2

3701101 0000 1

3701201 3 158.006+5 566.65 0.0 0,0 0.02

3701300 1

3701301 0.0 0.0 0.0 1

* bottom volume of upper head vessel

3750000 uphevsb branch

3750001 1 1

3750101 113.10d-40.855 0.0 0.0 -90.0

3750102 -0.855 2.3d-5 0.120 00

3750200 3 158.00d+5 566.65

3751101 370010000 375000000 113.10d-4 0.0 0.0

0000

3751201 0.0 0.0 0.0

* connecting pipe upper head - to upper plenum

3800000 uphepi3 branch

3800001 2 1

3800101 3.1416d-4 1.416 0.0 0.0 -65.31

3800102 -0.970 1.0d-5 0.020 00

3800200 3 158.00d+5 566.67

3801101 375010000 380000000 3.1416d-4 0.1 0.1

0000

3802101 380010000 355000000 3.1416d-4 39.0 39.0

0100

3801201 0.0 0.0 0.0

3802201 0.0 0.0 0.0

*

*

*

*

*

*

pressurizer

* pressurizer surge line - connection to intact loop 5***5*5*5**55* * 5*55*5*5 5**** ****** ** ** *5* * 5**** 5**

4000000 surgeli pipe

4000001 3

4000101 1.3685d-4 3

4000201 1.3685d-4 2

4000301 1.730 1

4000302 2.600 2

4000303 2.800 3

A7-8
4000401 0.0 3

4000501 0.0 3

4000601 -8.98 1

4000602 -74.06 2

4000603 +63.23 3

4000701 -0.270 1

4000702 -2.500 2

4000703 +2.500 3

4000801 2.3d-5 0.0132 3

4000901 0.5 0.5 2

4001001 00 * 3

4001101 0000 2

4001201 3 158.00d+5 599.15 0.0 0.0 0.03

4001300 1

4001301 0.0 0.0 0.0 2

• pressurizer vessel

• top of pressurizer, valve connection point

4090000 przrtop branch

4090001 1

4090101 1 15.OOd-4 0.898 0.0 0.0 -90.0

4090102 -0.898 2.3d-5 0.1244 00

4090200 2 158.00d+5 1.0

4091101 409010000 410000000 115.00d-4 0.0 0.0 0000

4091201 0.0 0.0 0.0

4100000 pressuri pipe

4100001 7

4100101 121.33d-4 1

4100102 121.54d-4 6

4100103 79.720d-4 7

4100201 0.0 6

4100301 0.9 6

4100302 0.585 7

4100401 0.0 7

4100501 0.0 7

4100601 -90.0 7

4100701 -0.9 6

4100702 -0.585 7

4100801 2.3d-5 0.1244 6

4100802 2.3d-5 0.0297 7

4100901 0.0 0.0 6

4101001 00 7

4101101 0000 5

4101102 0100 6

4101201 2 158.00d+5 0.9958 0.0 0.0 0.0 1

4101202 2 158.00d+5 0.9945 0.0 0.0 0.02

4101203 2 158.00d+5 0.8 0.0 0.0 0.03

4101204 2 158.00d+5 0.0 0.0 0.0 0.04

4101205 2 158.00d+5 0.0 0.0 0.0 0.07

4101300 1

4101301 0.0 0.0 0.0 6

inlet to surge line *

4150000 insurge sngljun

4150101 420000000 400000000 1.3685d-4 0.0 0.0

4150102 0100

4150201 1 0.0 0.0 0.0

• pressurizer bottom *

4200000 prcssbt branch

4200001 1 1

4200101 80.549d-4 0.790 0.0 0.0 -90.0

4200102 -0.790 2.3d-5 0.0323 00

4200200 2 158.00d+5 0.0

4201101 410010000 420000000 79.720d-4 0.0 0.0

0100

4201201 0.0 0.0 0.0

* time depend. volume for pressure initialization *

* trip valve has to be closed for transient run

* used in combination with pressurizer power controller *******S**5*** ******* **S*** ******** *5*** ** *5* *** **

4250000

4250101

4250201

4250300

4250301

cntjpre valve

430000000 409000000 0.0

1 0.0 0.0 0.0

trpvlv

575

0.0 0.0 0000

4300000 cntvpre tmdpvol

4300101 115.00d-4 1.00 0.0 0.0 -90.0

4300102 -1.00 0.0 0.0 00

4300200 2 575 entrlvar 823

4300201 136.0D5 136.065 1.00

4300202 162.005 162.0d6 1.0

5**5

* pressuriser porv discharge line, isolation valve *

* - orifice diameter of 2.74 mm assumed - *

5***************************

4400000 porvsrl valve

4400101 409000000 910000000 5.896c-6 1.5 1.5 0000

4400201 1 0.0 0.0 0.0

4400300 trpvlv

4400301 651

4410000 porvsr2 valve

4410101 409000000 9010000004.3043e-6 1.5 1.5

0100

4410201 1 0.0 0.0 0.0

4410300 mtrvlv

4410301 601 504 2. 0.

*

*

*4

*4

*

*

lobi mod2 steam generators

sg intact loop - secondary side *

* sgl - feedwater inlet umulus *

5000000 sglfwia branch

5000001 2 1

5000101 119.51d-4 1.402 0.0 0.0 -90.0 -1.402

5000102 1.5d-5 0.024 00

5000200 2 65.40d5 2.5d-5

5001101 555010000 500000000 119.5ld-4 0.0 0.0

0100

5002101 500010000 510000000 119.51d-4 0.0 0.0

0000

5001201 6.032 0.0 0.0

5002201 8.10 0.0 0.0

A7-9
* sgl - downcomer annulus

5100000 sgldown annulus

5100001 20

5100101 119.51d--4 20

5100201 119.51d-4 19

5100301 0.500 8

5100302 0.2500 12

5100303 0.1250 20

5100401 0.0 20

5100601 -90.0 20

5100701 -0.500 8

5100702 -0.2500 12

5100703 -0.1250 20

5100801 4.6d-5 0.024 20

5101001 00 20

5101101 0000 19

5101201 3 65.005 535.88 0.0 0.0 0.020

5101300 1

5101301 8.4 0.0 0.0 19

* sgl - adjustable throttle valve *

* controller used to set recirculation ratio *

5200000 sglslva valve

5200101 510010000530000000 119.51d-4 0.0 0.0

1100

5200201 1 8.1 0.0 0.0

5200300 srvvlv

5200301 535

• sgl -riser section (including spacer grids) '

5300000 sglrise pipe

5300001 20

5300101 299.05d-4 20

5300201 299.05d-4 19

5300301 0.1250 8

5300302 0.2500 12

5300303 0.500 20

5300401 0.0 20

5300601 +90.0 20

5300701 +0.1250 8

5300702 +0.2500 12

5300703 +0.500 20

5300801 4.6d-5 0.024263 20

5300901 0.9384 0.9384 19

5301001 00 20

5301101 0000 19

5301201 2 65.0d5 0.054 0.0 0.0 0.0 12

5301202 2 65.0d0 0.128 0.0 0.0 0.0 16

5301203 2 65.0d5 0.197 0.0 0.0 0.020

5301300 1

5301301 8.148 0.252 0.0 15

5301302 7.413 0.987 0.0 19 s*..s*s..sss...ss.*******s************************

* sgl -riser outlet *

* loss at top of u-tubes based onjacob's formula

5450000 sglrout branch

5450001 2 0

5450101 0.0 1.402 0.0628484 0.0 +90.0

5450102 +1.402 1.5d-5 0.047395 00

5450200 2 65.4005 0.18

5451101 530010000 545000000 299.05d-4 2.47 2.47

0100

5452101 545010000 550000000 314.62d-4 0.0 0.0

0000

5451201 0.7371 2.9289 0.0

5452201 0.6137 3.4704 0.0

* sgl - conical inlet section to separator *

5500000 sglsepin snglvol

5500101 0.0 1.105 0.034766 0.0 +90.0

5500102 +1.105 1.5d-5 0.112 00

5500200 2 65.4005 0.216 *******s***********.sss sss** ***sss*s*..*******

* sgl -separator component (specified as a branch) *

5520000 sglseptr branch

5520001 3 0

5520101 0.0 1.10 0.185637 0.0 +90.0

5520102 +1.10 1.5d-5 0.169 00

5520200 2 65.4005 0.66

5521101 552010000 560000000 0.16876 0.0 0.0

0100

5522101 552000000 555000000 0.0 0.0 0.0 0100

5523101 550010000552000000 98.52d-4 0.0 0.0

0000

5521201 0.0 0.37460 0.0

5522201 3.4330 1.02d-2 0.0

5523201 1.3097 17.055 0.0 **************************************************

* sgl - outer annulus surrounding coarse separator

5550000 sglspoa snglvol

5550101 0.0 1.105 0.11753 0.0 -90.0

5550102 -1.105 1.5d-5 0.105 00

5550200 2 65.4005 9.0d-3

* sgl - upper part of steam dome *

5600000 sglstdo branch

5600001 0 1

5600101 0.0 0.593 0.101573 0.0 +90.0

5600102 +0.593 1.5d-5 0.467 W0

5600200 2 65.40M 5 1.0 ***s***5*****************s s** ********s*******e*

* sgl - steam outlet isolation valve, stays open *

5620000 sglsout valve

5620101 5600100005640000003.728d-3 0.0 0.0

0100

5620102 1.0 1.0

5620201 1 0.0 2.1 0.0

5620300 trpvlv

5620301 522

* il sg safety valve opens to control see-side pressure *

5630000 ilsgsv valve

5630101 560010000 567000000 1.5d-3 1.5 1.5 0000

A7-1O
5630201 1 0.0 0.0 0.0

5630300 trpvlv

5630301 522

* sgl -steam line *

5640000 sglsline snglvol

5640101 3.728d-3 6.5 0.0 0.0 +0.0

5640102 +0.0 2.3d-5 0.0689 00

5640200 2 65.4005 1.0

* common steam discharge manifold

5650000 sgcommon branch

5650001 2 1

5650101 45.000d-4 2.0 0.0 0.0 0.0 0.0

5650102 2.3e-5 0.0761 11

5650200 2 65.4005 0.9999

5651101 564010000 565000000 37.280d-4 0.5 0.5

0100

5652101 664010000 565000000 14.590d-4 0.5 0.5

0100

5651201 0.0 2.1 0.0

5652201 0.0 0.7 0.0

* sec-side pry dump volume *

5670000 secpress tmdpvol

5670101 1.0 0.5 0.0 0.0 +90.0

5670102 +0.5 0.0 0.0 00

5670200 2 505

5670201 0.0 64.5d5 1.0

5670202 3.54 64.62d5 1.0

5670203 10.7 64.56d5 1.0

5670204 17.9 65.0505 1.0

5670205 25.12 65.2d5 1.0

5670206 32.28 65.0865 1.0

5670207 39.66 69.42d5 1.0

5670208 46.81 70.49d5 1.0

5670209 53.97 70.46d5 1.0

5670210 61.02 70.76d5 1.0

5670211 68.40 71.0305 1.0

5670212 75.5 71.1805 1.0

5670213 82.7 71.25d5 1.0

5670214 90.09 713M45 1.0

5670215 97.14 71.38d5 1.0

5670216 104.3 71.17d5 1.0

5670217 111.457 70.73d5 1.0

5670218 118.83 70.46d5 1.0

5670219 126.0 70.15d5 1.0

5670220 133.0 69.8d5 1.0

5670221 140.4 69.53d5 1.0

5670222 147.57 69.5005 1.0

5670223 154.7 70.01d5 1.0

5670224 161.9 70.4d5 1.0

5670225 169.16 70.6d5 1.0

5670226 176.31 70.73d5 1.0

5670227 183.47 70.82d5 1.0

5670228 190.85 70.89d5 1.0

5670229 198.01 70.95d5 1.0

5670230 219.59 71.06d5 1.0

5670231 233.90 71.09d5 1.0

5670232 241.28 71.12d5 1.0

5670233 255.5 71.13d5 1.0

5670234 277.18 71.13d5 1.0

5670235 28434 70.8845 1.0

5670236 305.9 70.75d5 1.0

5670237 320.46 70.57d5 1.0

5670238 334.6 70.39d5 1.0

5670239 349.2 70.11d5 1.0

5670240 363.5 69.8505 1.0

5670241 377.94 69.64d5 1.0

5670242 392.1 69.5d5 1.0

5670243 421.21 69.26d5 1.0

5670244 428.37 69.38d5 1.0

5670245 497.65 68.7d5 1.0

5670246 584.37 67.845 1.0

5670247 675.78 67.02d5 1.0

5670248 778.9 66.0105 1.0

5670249 864.5 65.1d5 1.0

5670250 989.58 63.44d5 1.0

5670251 1156.0 61.32d5 1.0

5670252 1343.0 59.0d5 1.0

5670253 1490.0 57.045 1.0

5670254 1614.5 55.6d5 1.0

5670255 1760.0 53.91d5 1.0

5670256 1927.0 52.4R 5 1.0

5670257 2125.0 50.74d5 1.0

5670258 2312.0 49.28d5 1.0

5670259 2500.0 48.2105 1.0

5670260 2644.0 46.9645 1.0

5670261 2877.0 44.8405 1.0

5670262 3073.0 43.35d5 1.0

5670263 3346.0 41.45C 5 1.0

5670264 3606.0 40.39d5 1.0

5670265 3919.0 38.28d5 1.0

5670266 4153.0 37.0105 1.0

5670267 4440.0 35.31d5 1.0

5670268 4635.0 34.04d5 1.0

5670269 5052.0 31.5005 1.0

5670270 5273.0 30.0205 1.0

5670271 5651.0 27.48d5 1.0

5670272 6067.7 25.15d5 1.0

5670273 6484.3 22.4005 1.0

5670274 6848.9 19.86d5 1.0

* sgl -main feedwatersystem *

5700000 sglmfwv tmdpjun

5700101 572000000 500000000 15.0d-4

5700200 1 522 cntrlvar 560

5700201 0.0 0.0 0.0 0.0

5700202 3.0 3.0 0.0 0.0

5720000 sglmfco tmdpvol

5720101 1.0 0.5 0.0 0.0 +90.0

5720102 +0.5 0.0 0.0 00

5720200 3 522

5720201 0.0 65.4045 486.16

5720202 20000.0 65.43d5 486.16

* sgl - auxiliary feedwater system

5740000 sglaffl tmdpjun

5740101 576000000 500000000 14.5896d-4

5740200 1 551

5740201 0.0 0.0 0.0 0.0

5740202 0.001 0.0565 0.0 0.0

5740203 5000.0 0.0565 0.0 0.0 * no step

5760000 sglafco tmdpvol

5760101 1.0 0.5 0.0 0.0 +90.0

A7-11
5760102 +0.5 0.0 0.0 00

5760200 3 522

5760201 0.0 65.40d5 423.0

5760202 50000.0 65.40d5 423.0

* sg common discharge line *

5800000 sgflocv valve

5800101 565010000 582000000 4.500d-3 0.0 0.0 0100

5800201 1 0.0 2.8 0.0

5800300 srvvlv

5800301 526 580

* condenser *

5820000 condensr tmdpvol

5820101 1.0 0.5 0.0 0.0 +0.0

5820102 +0.0 0.0 0.0 11

5820200 2 522

5820201 0.0 60.0O5 1.0

5820202 20000.0 1.013d5 1.0

* *

* broken loop steam generator - secondary side *

* sg2 - feedwater inlet annulus *

5***************************

6000000 sg2fwia branch

6000001 2 1

6000101 39.584d-4 1.304 0.0 0.0 -90.0

6000102 -1304 1.5d-5 0.012 00

6000200 2 65.4005 2.5d-5

6001101 655010000 600000000 39.584d-4 0.0 0.0

0100

6002101 600010000 610000000 39.584d-4 0.0 0.0

0000

6001201 1.9527 0.0 0.0

6002201 2.6413 0.0 0.0

* sg2 - downcomer annulus *

6100000 sg2down annulus

6100001 10

6100101 39.584d-4 10

6100201 39.584d4 9

6100301 1.000 4

6100302 0.500 6

6100303 0.250 10

6100401 0.0 10

6100601 -90.0 10

6100701 -1.000 4

6100702 -0.500 6

6100703 -0.250 10

6100801 4.6d-5 0.012 10

6101001 00 10

6101101 0000 9

6101201 3 65.045 535.88 0.0 0.0 0.0 10

6101300 1

6101301 2.8 0.0 0.0 9

* sg2 - adjustable throttle valve *

* controller used to set recirculation ratio

6200000 sg2slva valve

6200101 61001000063000000039.584d-4 0.0 0.0

1100

6200201 1 2.6413 0.0 0.0

6200300 srvvlv

6200301 635

* sg2 - riser section (including spacer grids) *

6300000 sg2rise pipe

6300001 10

6300101 94.947d-4 10

6300201 94.947d-4 9

6300301 0.2500 4

6300302 0.500 6

6300303 1.000 10

6300401 0.0 10

6300601 +90.0 10

6300701 +0.2500 4

6300702 +0.500 6

6300703 +1.000 10

6300801 4.6d-5 0.016403 10

6300901 0.8513 0.8513 9

6301001 00 10

6301101 0000 9

6301201 2 63.0d5 0.057 0.0 0.0 0.06

6301202 2 63.Od5 0.128 0.0 0.0 0.08

6301203 2 63.0d5 0.200 0.0 0.0 0.0 10

6301300 1

6301301 2.716 0.084 0.0 7

6301302 2.471 0.329 0.0 9

* sg2 - riser outlet *

6450000 sg2rout branch

6450001 2 0

6450101 0.0 1304 0.0230638 0.0 +90.0

6450102 +1.304 1.5d-5 0.05308 00

6450200 2 65.4005 0.169

6451101 630010000 645000000 94.947d-4 0394 0.394

0100

6452101 645010000 650000000 109.12d-4 0.0 0.0

0000

6451201 0.84894 2.8992 0.0

6452201 0.53715 3.4805 0.0

* sg2 - conical inlet section to separator

6500000 sg2sepin snglvol

6500101 0.0 1.128 0.012309 0.0 +90.0

6500102 +1.128 1.5d-5 0.065 00

6500200 2 65.4005 0.239

* sg2 - separator component, specified as a branch *

*5*************************

6520000 sg2septr branch

6520001 3 0

6520101 0.0 1.10 0.0590521 0.0

6520102 +1.10 1.5d-5 0.103 00

6520200 2 65.40M 5 0.66

+90.0

A7-12
6521101 652010000 660000000 0.05368 0.0 0.0

0100

6522101 652000000 655000000 0.0 0.0 0.0 0100

6523101 650010000 652000000 33.183d-4 0.0 0.0

0000

6521201 0.0 0.31982 0.0

6522201 2.7663 1.08d-2 0.0

6523201 1.4385 13.959 0.0

* sg2 -outer annulus surrounding coarse separator *

6550000 sg2spoa snglvol

6550101 0.0 1.128 0.0378 0.0 -90.0

6550102 -1.128 1.5d-5 0.035 00

6550200 2 65.40d5 9.0d-3

* sg2 - upper part of steam dome *

6600000 sg2stdo branch

6600001 0 1

6600101 0.0 0.681 0.0389911 0.0 +90.0

6600102 +0.681 1.5d-5 0.270 00

6600200 2 65.40d5 1.0

* sg2 - steam outlet isolation valve, stays open *

6620000 sg2sout valve

6620101 660010000 664000000 1.459d-3 0.0 0.0

0100

6620102 1.0 1.0

6620201 1 0.0 0.7 0.0

6620300 trpvlv

6620301 522

* bl sg safety valve opens to control sec-side pressure*

6630000 blsgsv valve

6630101 660010000 667000000 0.5d-3 1.5 1.5 0000

6630201 1 0.0 0.0 0.0

6630300 trpvlv

6630301 522

* sg2 - steam line *

6640000 sg2sline snglvol

6640101 1.459d-3 5.8 0.0 0.0 +0.0

6640102 +0.0 23d-5 0.0431 00

6640200 2 65.4Od5 1.0

* sec-side pry dump volume*

6670206 32.28 65.08d5 1.0

6670207 39.66 69.42d5 1.0

6670208 46.81 70.49d5 1.0

6670209 53.97 70.46d5 1.0

6670210 61.02 70.76d5 1.0

6670211 68.40 71.03d5 1.0

6670212 75.5 71.18d5 1.0

6670213 82.7 71.25d5 1.0

6670214 90.09 71.34d5 1.0

6670215 97.14 71.38d5 1.0

6670216 104.3 71.17d5 1.0

6670217 111.457 70.73d5 1.0

6670218 118.83 70.46d5 1.0

6670219 126.0 70.15d5 1.0

6670220 133.0 69.8d5 1.0

6670221 140.4 69.53d5 1.0

6670222 147.57 69.500d 1.0

6670223 154.7 70.010d 1.0

6670224 161.9 70.4d5 1.0

6670225 169.16 70.6d5 1.0

6670226 176.31 70.73d5 1.0

6670227 183.47 70.82d5 1.0

6670228 190.85 70.89d5 1.0

6670229 198.01 70.95d5 1.0

6670230 219.59 71.06d5 1.0

6670231 233.90 71.09d5 1.0

6670232 241.28 71.12d5 1.0

6670233 255.5 71.13d5 1.0

6670234 277.18 71.13d5 1.0

6670235 284.34 70.88d5 1.0

6670236 305.9 70.75d5 1.0

6670237 320.46 70.57d5 1.0

6670238 334.6 70.39d5 1.0

6670239 349.2 70.11dS 1.0

6670240 363.5 69.85d5 1.0

6670241 377.94 69.64d5 1.0

6670242 392.1 69.5d5 1.0

6670243 421.21 69.26d5 1.0

6670244 428.37 69.38d5 1.0

6670245 497.65 68.705 1.0

6670246 584.37 67.8d5 1.0

6670247 675.78 67.02d5 1.0

6670248 778.9 66.01d5 1.0

6670249 864.5 65.105 1.0

6670250 989.58 63.44d5 1.0

6670251 1156.0 61.32d5 1.0

6670252 1343.0 59.005 1.0

6670253 1490.0 57.0d5 1.0

6670254 1614.5 55.6d5 1.0

6670255 1760.0 53.9105 1.0

6670256 1927.0 52.4d5 1.0

6670257 2125.0 50.74d5 1.0

6670258 2312.0 49.28d5 1.0

6670259 2500.0 48.21d5 1.0

6670260 2644.0 46.96d5 1.0

6670261 2877.0 44.8445 1.0

6670262 3073.0 43.35d5 1.0

6670263 3346.0 41.45d5 1.0

6670264 3606.0 40.39d5 1.0

6670265 3919.0 38.28d5 1.0

6670266 4153.0 37.01dS 1.0

6670267 4440.0 35.3105 1.0

6670268 4635.0 34.04d5 1.0

6670269 5052.0 31.500d 1.0

6670270 5273.0 30.02d5 1.0

6670271 5651.0 27.48d5 1.0

6670272 6067.7 25.1505 1.0

6670273 6484.3 22.4005 1.0

6670274 6848.9 19.86d5 1.0

*5**

6670000 atmos

6670101 1.0

6670102 +0.5

6670200 2 505

6670201 0.0

6670202 3.54

6670203 10.7

6670204 17.9

6670205 25.12

tmdpvol

0.5 0.0 0.0

0.0 0.0 00

64.5d5 1.0

64.62d5 1.0

64.56d5 1.0

65.05d5 1.0

65.2d5 1.0

+90.0

* sg2 - main feedwater system *

A7-13
**** ********aaaai!a*saaa*aa******a****************

a...

6700000 sg2mfwv tmdpjun

6700101 672000000 600000000 6.Od4

6700200 1 522 cntrlvar 660

6700201 0.0 0.0 0.0 0.0

6700202 1.5 1.5 0.0 0.0

5***************************

6720000 sg2mfco tmdpvol

6720101 1.0 0.5 0.0 0.0 +90.0

6720102 +0.5 0.0 0.0 00

6720200 3 522

6720201 0.0 65.40d5 482.16

6720202 20000.0 65.40d5 482.16

aa****************aaa*****************************

* sg2 - auxiliary feedwater system a *********aaa******a*******************************

6740000 sglaffl tmdpjun

6740101 676000000 600000000 6.3794d-4

6740200 I 551

6740201 0.0 0.0 0.0 0.0

6740202 0.001 0.0195 0.0 0.0

6740203 5000.0 0.0195 0.0 0.0 * no step

6760000 sg2afco tmdpvol

6760101 1.0 0.5 0.0 0.0 +90.0

6760102 +0.5 0.0 0.0 00

6760200 3 522

6760201 0.0 65.40d5 433.0

6760202 50000.0 65.40d5 433.0 *********************ill***************************

a accumulator injection system - intact loop a

7100000 accuilcl accum

7100101 0.0 4.580 266.61d-3 0.0 +90.0

7100102 +4.580 2.3d-5 0.0 10 *** rSml

7100200 37.5d5 298.0

7101101 7200000004.830d-4 2.0 2.0 0

7102200 127.0d-3 0.0 0.925 +0.0 0.010 0 0.0 0.0 0.0 **************aa******a s** *******a s** *****

* accu il - dividing branch to hot & cold leg feed-lines * *************************************************a.

7200000 accudivl branch

7200001 0 0

7200101 4.831d-4 1.000 0.0 0.0. -90.0

7200102 -1.0 1.5d-5 0.0248 00

7200200 3 37.5d5 400.0 a***@*tillll!*atialll!Sia**ilaaaiSiiSaiait********

a isolation valve for hot leg injection line a

 @** *$*******@*****************Saaa************

7220000 achlvlvi valve

7220101 720010000 724000000 0.0 0.0 0.0 0020

7220201 1 0.0 0.0 0.0

7220300 trpvlv

7220301 511 *valvestaysshut ****a***a****S*a*@***a  @** ********a****a*a*****

Saccu il hot leg feed-line, turbine flow meter section a

7240000 achlturi pipe

7240001 2

7240101 4.831d-4 2

7240201 4.83ld-4 I

7240301 3.84 1 1.47 2

7240401 0.0 2

7240601 -90.0 I 0.0 2

7240701 -3.84 1 0.0 2

7240801 1.5d-5 0.0248 2

7240901 8.0 8.0 1

7241001 00 2

7241101 0020 1

7241201 3 158.00d+5 460.0 0.0 0.0 0.02

7241300 1

7241301 0.0 0.0 0.0 1 *****s*aasa*asa***s***aa*****aa*as****Osaa*aas***a

Saccu hot leg feed-line orifice (nom 8.8 mm dia) a

**************************************************

7260000 achlori sngljun

7260101 724010000 728000000 0.0 115.0 115.0

7260102 0120

7260201 1 0.0 0.0 0.0

a**a******a*****a************aaa**a***********as*a

a accu il hot leg feed-line, orifice to upper plenum *

**************************************************

7280000 achlinjl pipe

7280001 1

7280101 4.831d-4 1

7280301 3.87 1

7280401 0.0 1

7280601 -29.57 1

7280701 -1.910 1

7280801 1.5d-5 0.0248 1

7281001 00 1

7281201 3 158.00d+5 463.0 0.0 0.0 0.0 1

a accu hot leg injection point (into upper plenum)

aaaaaaaaaaaaaasasaasaaaaaaaaaaaaaaaaaaaaaaasaaaaaa

7300000 achlupi sngljun

7300101 728010000350010000 4.831d-4 30.0 30.0

7300102 0020

7300201 1 0.0 0.0 0.0

7320000 acclvlvi valve

7320101 720010000 734000000 9.616d-6 0.0 0.0 0120

7320201 1 0.0 0.0 0.0

7320300 mtrvlv

7320301 602 502 2. 0. ******** *************************************a****

a accu il cold leg feed-line, turbine flow meter section *

****sa**siaaiai*****************aa***a**a*s****s**

7340000 acclturb pipe

7340001 2

7340101 4.831d-4 2

7340201 4.83Id-4 1

7340301 3.84 1 1.30 2

7340401 0.0 2

7340601 -90.0 1 0.0 2

7340701 -3.84 1 0.0 2

7340801 1.5d-5 0.0248 2

7340901 8.0 8.0 1

7341001 00 2

7341101 0020 1

7341201 3 158.00d+5 460.0 0.0 0.0 0. 2

7341300 1

A7-14
7341301 0.0 0.0 0.0 1 *aaa*SSS*SOaatSS**es*s*a*sss*t*SaS*es**e*eaa*ss**.

a*SO

* accu cold leg feed-line orifice (nom 8.1 mm dia) * * use pipe area = 4.831 d-4 with calculated loss cocffs. * a**a**saaa*********aaa*a**a***a***a**a*.***********

a*SS

7360000 acclori sngljun

7360101 734010000 738000000 4.831d-4 95.0 95.0

7360102 0120

7360201 1 0.0 0.0 0.0 aaa***********************************************

*a*S

* accu il cold leg feed-line, orifice to cold leg * **a*aa**************aa.******a**.*a***a a** .*a*

eSSS

7380000 acclinjl pipe

7380001 1

7380101 4.831d-4 1

7380301 3.255 1

7380401 0.0 1

7380601 -35.93 1

7380701 -1.910 1

7380801 1.5d-5 0.0248 1

7381001 00 1

7381201 3 158.00d+5 463.0 0.0 0.0 0. 1 ********************Statit**aaSaaSt*********SO****

aSSS

* accu cold leg injection point into cold leg, rpv inlet *a**aa**aa*****************aa**a******************

7400000 acclrpvi sngljun

7400101 738010000 1450000004.831d.4 8.0 8.0 • 15.0

15.0

7400102 0020

7400201 1 0.0 0.0 0.0 ****SS*SS*SS**SS**O******S*SS*S*SSSSS*SSSSSSS*SSSS

*S**

* accumulator low level trip control logic a

aaa*aaa**aaaaaaaaaaaaa*aaaaaaaaaaa**aaaaaaaaaaaaa.

*S**

20571000*accuflol integral 1.0 0.0 1

20571001 mfiowj 710010000 a

20571100 liqmassl sum 0.92 0.0 1

205711010.0 211.8d-3 rhof 720010000

* accu trip pressure corrections **SS*S******S**OtSSSatS*atatSSS***S*SS*****ea**S**

StSS

20571200 dpaccufl sum 9.80665 0.0 1

20571201 0.0 2.29 rho 710010000

20571202 1.0 rho 720010000

20571203 3.84 rho 734010000

20571204 1.91 rho 738010000

20571300 dpacclIp sum 1.0 0.0 1

20571301 0.0 1.0 p 710010000

20571302 1.0 cntrlvar 712

*20571303 -1.0 p 305010000

20571303 -1.0 p 145010000 a***a*aaa**aa**aaaaaa*aaaaaaaaaeaaaa**aaaa*aaaaaaa

S**S

* accumulator injection system - broken loop a

*S*S

7500000 accubl accure

7500101 0.0 4.794 94.35d-3 0.0 +90.0

7500102 +4.794 2.3d-5 0.0 10 ** rSml

7500200 27.00d+5 298.00

7501101 7600000002.Old-4 2.0 2.0 0

7502200 61.00d-3 0.0 0.130 +0.0 0.005 0 0.0 0.0 0.0

* accu bI - dividing branch to hot & cold leg feed-lines a

********************e*****************************

 

7600000 accudiv2 branch

7600001 0 0

7600101 2.01 ld-4 2.000 0.0 0.0 -90.0

7600102 -2.0 1.5d-5 0.0160 00

7600200 3 27.005 400.0 ** ************************************************

aaaa

* isolation valve for hot leg injection line a

**************************************************

7620000 achlvlvb valve

7620101 760010000 764000000 0.0 0.0 0.0 0020

7620201 1 0.0 0.0 0.0

7620300 trpvlv

7620301 511 *valvestaysshut

*a********************bi*eflow**te*section********

 

a accu bl hot leg feed-line, turbine flow meter sections

a** ae*****a*********a***a*************************

7640000 achlturb pipe

7640001 2

7640101 2.011d-4 2

7640201 2.011d-4 1

7640301 2.698 1 0.852 2

7640401 0.0 2

7640601 -90.0 1 0.0 2

7640701 -2.698 1 0.0 2

7640801 1.5d-5 0.0160 2

7640901 2.0 2.0 1

7641001 00 2

7641101 0020 1

7641201 3 158.00d+5 460.0 0.0

7641300 1

7641301 0.0 0.0 0.0 1

0.0 0. 2

****************.*.s*.*..aa.**asa*.aa...a*a********

SSSS

a accu hot leg feed-line orifice (nom 5.3 mm dia) a

aaaa***aaaeaaaaaaa**aa*aaaaa*aaaaaa*a**aaaaaaaaaaa

*S**

7660000 achlorb sngljun

7660101 764010000 768000000 0.0 130.0 130.0

7660102 0120

7660201 1 0.0 0.0 0.0 a*****aaaaaaaaaaaa*aaaaaaa**a**aaa**aaaaaaaa**a*aa

a accublhotlegfeed-line, orifice to upper plenum *

7680000 achlinji pipe

7680001 2

7680101 2.01Id-4 1 7.088d-5 2

7680201 7.088d-5 1

7680301 1.870 1 1.845 2

7680401 0.0 2

7680601 -32.33 1 -28.13 2

7680701 -1.00 1 -0.870 2

7680801 1.5d-5 0.0160 1

7680802 1.5d-5 0.0095 2

7680901 0.0 0.0 1

7681001 00 2

7681101 0020 1

7681201 3 158.00d+5 463.0 0.0 0.0 0. 2

7681300 1

A7-15
7681301 0.0 0.0 0.0 1 aa*s***********************aaasaaaaa~sasa*********

* accu hot leg injection point (into upper plenum) *

aa*s*aa***a**a********as****************a**********

7700000 achlupb sngljun

7700101 768010000 350010000 7.088d-5 2.5 2.5

7700102 0020

7700201 1 0.0 0.0 0.0 a*.****aa************************s****a~sa*ass*****

* isolation valve for cold leg injection line

* ** *.*** * *s* a ******s*a.a.*5** *** *5* ** *5*5* ***

7720000 acclvlvb valve

7720101 760010000 774000000 0.0 0.0 0.0 0020

7720201 1 0.0 0.0 0.0

7720300 trpvlv

7720301 511 *** valve stays shut

* accu bI cold leg feed-line, turbine flow meter sections

7740000 acclturb pipe

7740001 2

7740101 2.011d-4 2

7740201 2.01ld-4 I

7740301 2.698 1 0.852 2

7740401 0.0 2

7740601 -90.0 1 0.0 2

7740701 -2.698 1 0.0 2

7740801 1.5d-5 0.0160 2

7740901 2.0 2.0 1

7741001 00 2

7741101 0020 1

7741201 3 158.00d+5 460.0 0.0 0.0 0. 2

7741300 1

7741301 0.0 0.0 0.0 1 .a*a.*ss***a...aa*a...s.*s.*.sssaa*s..s..s*.sa****

accu cold leg feed-line orifice (nom 5.0 nun dia)

7760000 acclorb sngljun

7760101 774010000 778000000 0.0 160.0 160.0

7760102 0120

7760201 1 0.0 0.0 0.0

*********************************************.****

* accu bl cold leg feed-line, orifice to cold leg *

7780000 ,cclinjb pipe

7780001 1

7780101 2.011d4 1

7780301 2.870 1

7780401 0.0 1

7780601 -40.66 1

7780701 -1.870 1

7780801 1.5d-5 0.0160 1

7781001 00 1

7781201 3 158.00d+5 463.0 0.0 0.0 0. 1

* accu cold leg injection point into cold leg, rpv inlet

7800000 acclrpvb sngljun

7800101 7780100002600000002.011d4 10.0 10.0

7800102 0020

7800201 1 0.0 0.0 0.0 .. aa*a*.*sa.*a.********..5.5aaa.*.a..aa*..ssa*****

* lower pressure injection system

8000000 hpistank trdpvol

8000101 1.0 1.0 0.0 0.0 -90.0

8000102 -1.0 0.0 0.0 10

8000200 3

8000201 0.0 1.0d5 303.0

8100000 hpispump tmdpjun

8100101 800000000 145000000 1.131d-4

8100200 1 688 cntrlvar 805

8100201 0.0 0.0 0.0 0.0

8100202 200.0 200.0 0.0 0.0

*sa*****.********.********.**************.*********

* *

* break & pressurizer porv containment volumes *

* containment volume I - not scaled -

5***************************

9000000 contvol tmdpvol

9000101 1.0 1.0 0.0 0.0 -90.0

9000102 -1.0 0.0 0.0 00

9000200 2

9000201 0.0 1.Od+5 1.0

* containment volume 2 - not scaled - *

**0*9010000 contvob tmdpvol

9010101 1.0 1.0 0.0 0.0 -90.0

9010102 -1.0 0.0 0.0 00

9010200 2

9010201 0.0 l.Od+5 1.0

a*sa*********a*******a.******** ****************as.*

containment volume 3 - not scaled - *

5***************************

9100000 contvo2 tmdpvol

9100101 1.0 1.0 0.0 0.0 -90.0

9100102 -1.0 0.0 0.0 00

9100200 2

9100201 0.0 1.Od+5 1.0 aass**aa..a*ss*asasa*s..saasa*aaaaassaasa*aseaea..

* main break assembly - a aaa..aaseasaaesaasassasaaa*a*saassaas*aaesaa*ass.5

9500000 mainori valve

* simulates a leak in the pcs

9500101 240010006 900000000 7.0686d-6 1.25 125

0100

9500102 1.00 0.95

9500201 1 0.0 0.0 0.0

9500300 mtrvlv

9500301 505 511 0.25 0.0 150

saaaaeaa*a*sump*ata*saasass*aaaasse*a*****eaa*****

* pump data *

A7-16
* *

• single phase head curves - lobi tech. note 1.06.01.79.80 *

* head curve no. I *

1351100 1 1

1351101 0.00 1.055

1351102 0.05 1.064

1351103 0.10 1.079

1351104 0.20 1.102

1351105 0.30 1.120

1351106 0.40 1.131

1351107 0.50 1.131

1351108 0.60 1.123

1351109 0.70 1.104

1351110 0.80 1.0785

1351111 0.90 1.043

1351112 1.00 1.000 •****00o*********•*0***•*******•****e*•*0000000***•

•0.*

* head curve no.2 *

1351200 1 2

1351201 0.00 -0.780

1351202 0.10 -0.6285

1351203 0.20 -0.478

1351204 031 -0.308

1351205 0.40 -0.169

1351206 0.5015 0.0

1351207 0.60 0.173

1351208 0.70 0.365

1351209 0.80 0.556

1351210 0.90 0.768

1351211 0.95 0.881

1351212 1.00 1.00 • o***•********0*******••** e•**•**•*oo*•**e *****•***

*head curve no.3 3 **•***************000*•******* *********•**•**•**••

**•*

1351300 1 3

1351301 -1.00 2.110

1351302 -0.90 1.927

1351303 -0.80 1.759

1351304 -0.70 1.6105

1351305 -0.60 1.489

1351306 -0.50 1.380

1351307 -0.40 1.282

1351308 -0.30 1.20

1351309 -0.20 1.133

1351310 .0.10 1.0805

1351311 0.0 1.055 00*****• 000** •**0•**•**0**•**•*•••**•*•*•*••*0

* head curve no.4 4 **•*••*******•**••**••**•00**•*••**••••**•*••*••••

1351400 1 4

1351401 -1.00 2.11

1351402 -0.90 1.862

1351403 -0.80 1.65

1351404 -0.70 1.474

1351405 -0.60 1.332

1351406 -0.50 1.212

1351407 -0.40 1.105

1351408 -0.30 1.002

1351409 -0.20 0.911

1351410 -0.10 0.830

1351411 0.0 0.761 •***************000 •** ••*0****e•*****••***••***

* head curve no. 5 ***ooo*00***0 000** ****************************

1351500 1 5

1351501 0.0 0.424

1351502 0.1 0.489

1351503 0.20 0.543

1351504 0.30 0.603

1351505 0.40 0.660

1351506 0.487 0.702

1351507 0.55 0.7305

1351508 0.65 0.762

1351509 0.75 0.789

1351510 0.85 0.828

1351511 0.95 0.901

1351512 1.00 0.948 •*0*00****0***•0.•  0** ***•***0* s•***•*****•••e**

*head curve no.6 6 00************************************************

1351600 1 6

1351601 0.0 0.761

1351602 0.10 0.710

1351603 0.20 0.664

1351604 0.30 0.664

1351605 0.40 0.653

1351606 0.50 0.6795

1351607 0.60 0.707

1351608 0.70 0.746

1351609 0.80 0.799

1351610 0.90 0.861

1351611 1.00 0.948 ••***•*•*•*****•**•***•*••*********• •••** •*•**

• head curve no. 7 *

1351700 I 7

1351701 -0.60 -0.283

1351702 -0.50 -0.147

1351703 -0.45 -0.081

1351704 -0.384 0.0

1351705 -0.30 0.106

1351706 -0.25 0.170

1351707 -0.20 0.233

1351708 -0.15 0.290

1351709 -0.10 0.3395

1351710 0.0 0.424

• •**I **•*•**• **•***•*•*•**

• single phase torque data •

 Oo** **00*000000000000000******00000************

* torque curve no. 1 I

00****0******0***********.0************************

1351800 2 1

1351801 0.0 0.439

1351802 0.05 0.442

1351803 0.10 0.460

1351804 0.20 0.515

1351805 0.30 0.5825

A7-17
1351806 0.40 0.647

1351807 0.50 0.706

1351808 0.60 0.764

1351809 0.70 0.823

1351810 0.80 0.882

1351811 0.90 0.9415

1351812 1.00 1.00

* torque curve no. 2 

*

1351900 2 

2

1351901 0.00 -0.518

1351902 0.10 -0.350

1351903 0.20 -0.184

1351904 0.31 0.0

1351905 0.40 0.151

1351906 0.5015 0.320

1351907 0.60 0.464

1351908 0.70 0.5985

1351909 0.80 0.731

1351910 0.95 0.9305

1351911 1.00 1.00

* torque curve no. 3 

S

1352000 2 

3

1352001 -1.00 1.182

1352002 -0.90 1.037

1352003 -0.80 0.911

1352004 -0.70 0.804

1352005 -0.60 0.712

1352006 -0.50 0.632

1352007 -0.40 0.567

1352008 -0.30 0.513

1352009 -0.20 0.473

1352010 0.0 0.439

* torque curve no.4 

*

1352100 2 

4

1352101 -1.00 1.182

1352102 -0.90 1.120

1352103 -0.80 1.093

1352104 -0.70 1.104

1352105 -0.60 1.240

1352106 -0.50 1.323

1352107 -0.40 1.3400

1352108 -0.30 1.256

1352109 -0.20 1.122

1352110 -0.10 1.041

1352111 0.0 0.984

* torque curve no. 5 

5

1352210 0.85 0.409

1352211 0.95 0.549

1352212 1.00 0.630

torque curve no. 6 

*

1352300 2 

6

1352301 0.0 0.984

1352302 0.10 0.9505

1352303 0.20 0.929

1352304 0.30 0.905

1352305 0.40 0.873

1352306 0.50 0.840

1352307 0.60 0.802

1352308 0.70 0.761

1352309 0.80 0.7205

1352310 0.90 0.678

1352311 1.00 0.630

* torque curve no. 7 

*

1352400 2 

7

1352401 -0.60 -1.59

1352402 -0.50 -1.39

1352403 -0.45 -1.297

1352404 -0.384 -1.18

1352405 -0.30 -1.040

1352406 -0.25 -0.956

1352407 -0.20 -0.870

1352408 -0.15 -0.7905

1352409 -0.10 -0.716

1352410 -0.05 -0.640

1352411 0.0 -0.569

* 

*

* two-phase multiplier data 

- based on lobi pump data 

*

* head multiplier 

* 5*5*s*5**************~******************s********

1353000 

0

1353001 0.00 0.00

1353002 0.20 0.00

1353003 0.43 1.00

1353004 0.86 1.00

1353005 1.00 0.00 **************5**.**55**.**.**.*******5****55*5****

* torque curve 

- based on semiscale pump (see pg-r-77.08

* by m. s. sahota) s.ss************************s*****s..s5.********~s.

1353100 

0

1353101 0.0 0.0

1353102 0.15 0.0

1353103 0.24 0.56

1353104 0.80 0.56

1353105 0.96 0.45

1353106 1.00 0.0 ******.*55**5*******5********.**5*55*5*5******5***5*

****

* pump 2-phase difference data 

- computed from lobi 

*

" tech. note no. 1.06.01.79.80 and 

*

" techn. note no. 1.06.01.81.13 

*

15100

1352201

1352202

1352203

1352204

1352205

1352206

1352207

1352207

1352209

2 

5

0.0 -0.569

0.10 -0.439

0.20 -0318

0.30 -0.202

0.40 -0.098

0.487 0.0

0.55 0.0695

0.65 0.173

0.75 0.284

A7-18
* head curve no. 1 *

1354100 1 1

1354101 0.0 .165

1354102 0.05 .774

1354103 0.1 .810

1354104" 0.3 .773

1354105 0.5 .804

1354106 0.7 .828

1354107 1.0 .816

* head curve no. 2 *

1354200 1 2

1354201 0.0 .220

1354202 0.1 .2285

1354203 0.3 .248

1354204 0.5 0.329

1354205 0.7 0.477

1354206 1.00 0.816

head curve no.3 *

1354300 1 3

1354301 -1.0 -0.820

1354302 -0.8 -1.4910

1354303 -0.7 -1.670

1354304 -0.5 -1.780

1354305 -0.3 -1.50

1354306 -0.2 -1.137

1354307 -0.1 -0.585

1354308 0.0 .165

* head curve no.4 4

1354400 1 4

1354401 -1.00 -0.820

1354402 -0.70 -0.136

1354403 -0.50 -0.058

1354404 -0.30 -0.018

1354405 -0.10 -0.030

1354406 0.00 -0.039

*5***

* head curve no.5 *

1354500 1 5

1354501 0.0 -.046

1354502 0.2 -.366

1354503 0.4 -.580

1354504 0.6 -.6805

1354505 0.8 -.676

* head curve no. 6

5***************************

1354600 1 6

1354601 0.0 -.039

1354602 0.2 -.066

1354603 0.4 -.097

1354604 0.6 -.173

1354605 0.8 -.331

1354606 1.0 -.481 ***************************t*****************

5***

* head curve no. 7 *

1354700 1 7

1354701 -0.6 .7970

1354702 -0.4 .5092

1354703 -0.2 .233

* torque curve no. 1 ss****..*s***s**s*ssss**s*sss.....*s**..s...s....*

1354800 2 1

1354801 0.0 .54

1354802 0.2 .59

1354803 0.4 .65

1354804 0.6 .77

1354805 0.8 .95

1354806 0.9 .98

1354807 0.95 .96

1354808 1.0 .87

* torque curve no. 2

1354900 2 2

1354901 0.0 -.15

1354902 0.2 .02

1354903 0.4 .22

1354904 0.6 .46

1354905 0.8 .71

1354906 0.9 .81

1354907 0.95 .85

1354908 1.0 .87

* torque curve no. 3

1355000 2 3

1355001 -1.0 .62

1355002 -0.8 .68

1355003 -0.6 .53

1355004 -0.4 .46

1355005 -0.2 .49

1355006 0.0 .54

torque curve no.4 4

1355100 2 4

1355101 -1.0 .62

1355102 -0.8 .53

1355103 -0.6 .46

1355104 -0.4 .42

1355105 -0.2 .39

1355106 0.0 .36

* torque curve no. 5 *

1355200 2 5

1355201 0.0 -.63

1355202 0.2 -.51

A7-19
1355203 0.4 -.39

1355204 0.6 -.29

1355205 0.8 -.20

1355206 0.9 -.16

1355207 1.0 -. 13

* torque curve no. 6 *

1355300 2 6

1355301 0.0 36

1355302 0.2 .32

1355303 0.4 .27

1355304 0.6 .18

1355305 0.8 .05

1355306 1.0 -. 13

* torque curve no. 7 *

1355400 2 7

1355401 -1.0 -1.44

1355402 -0.8 -1.25

1355403 -0.6 -1.08

1355404 -0.4 -0.92

1355405 -0.2 -0.77

1355406 0.0 -0.63

*5*************************

*

S

pump speed-time curves *

13341000 1 5 2 1 0.0

133411000 1

133411014 0.005375

133412014 4

13341301 1.0 4

13341401 575.00 5

13341501 0 0 0 1 12.8 1

13341601 335010000 0 1 1 12.8 1

13341701 100 0.005 0.0 0.0 1

13341901 0.01502 0.20 0.20 0. 0. 0. 0. 1. 1

* heated length - lower section st-1.4948

13351000 1 5 2 1 0.003225

133511000 1

133511014 0.005375

13351201 3 4

13351301 1.0 4

13351401 605.73 1 604.192 599.843 592.964 583.7 5

13351501 0 0 0 1 26.368 1

13351601 3350100000 1 1 26.368 1

13351701 100 0.065 0.0 0.0 1

13351901 0.01502 0.412 0.412 0. 0. 0. 0. 1. 1

heated length - lower intermediate section st-1.4948

13352000 1 5 2 1 0.003875

133521000 1

13352101 4 0.005375

13352201 3 4

13352301 1.0 4

13352401 612.64 1 611.292 607.383 601.1 4 592.525

13352501 0 0 0 1 42.432 1

13352601 335020000 0 1 1 42.432 1

13352701 100 0.144106 0.0 0.0 1

13352901 0.01502 0.663 0.663 0. 0. 0. 0. 1. 1

* heated length - middle section st-1.4948 *

133530002 5 2 1 0.004175

133531000 1

133531014 0.005375

13353201 3 4

13353301 1.0 4

13353401 622.77 1 621.49 2 617.75 3 611.69 4 603.4 5

133535010 0 0 1 56.00 2

13353601 335030000 10000 1 1 56.00 2

13353701 100 0.2255 0.0 0.0 2

13353901 0.01502 0.875 0.875 0. 0. 0. 0. 1. 2

* heated length - upper intermediate section st-1.4948

S***

13355000 1 5 2 1 0.003875

133551000 1

13355101 4 0.005375

13355201 3 4

13355301 1.0 4

13355401 631.77 1 630.4 2 626.5 3 620.2 4 611.6 5

13355501 0 0 0 1 42.432 1

13355601 335050000 0 1 1 42.432 1

13355701 100 0.142 0.0 0.0 1

13355901 0.01502 0.663 0.663 0. 0. 0. 0. 1. 1

* intact & broken loop pump speed-time curve *

20213500 reac-t

20213501 0.00 1.00

20213502 0.5 0.75

20213503 1.0 0.5

20213504 1.5 0.25

20213505 2.0 0.0

20213506 10000.0 0.0

*

*

*

S

*

core heat structures

S

*

*

*

* lower power connection - cables ni-201 *

132510001 5 2 1 0.0

132511000 1

132511014 0.002257

13251201 4 4

132513011.0 ' 4

13251401 640.0 1 639.18 2 636.75 3 632.68 4 627.0 5

132515010 0 0 1 24.96 1

13251601325020000 0 1 1 24.96 1

13251701 100 0.047 0.0 0.0 1

13251901 0.1015 0.390 0.390 0. 0. 0. 0. 1. 1

* lower extension of heater rods ni-201

A7-20
* heated length - upper section st-1.4948 *

13356000 1 5 2 1 0.003225

133561000 1

13356101 4 0.005375

13356201 3 4

13356301 1.0 4

13356401 631.97 1 630.43 2 626.1 3 619.2 4 609.9 5

13356501 0 0 0 1 26.368 1

13356601 335060000 0 1 1 26.368 1

13356701 100 0.066 0.0 0.0 1

13356901 0.01502 0.412 0.412 0. 0. 0. 0. 1. 1 ****************   ** *5*5**5*5 *5 *5 *55**** *5 *5**

* upper extension of heater rods ni-201 * *5***55*5*** ***5***5********5*5* 555**** .* S*S********

13366000 1 5 2 1 0.0025

133661000 1

13366101 4 0.005375

133662014 4

13366301 1.0 4

13366401 602.0 5

13366501 0 0 0 1 20.992 1

13366601 335060000 0 1 1 20.992 1

13366701 100 0.011413 0.0 0.0 1

13366901 0.01502 0.328 0.328 0. 0. 0. 0. 1. 1 see ssssssssssssssssss 5.s*ss 555s*sssss***ssss*5***

134510004 5 2 1 0.0025

134511000 1

134511014 0.005375

134512014 4

13451301 1.0 4

13451401 608.0 5

134515010 0 0 1 38.400 2

134515020 0 0 1 31.168 3

134515030 0 0 1 20.160 4

13451601345010000 10000 1 1 38.400 2

134516023500100000 1 1 31.168 3

13451603 355010000 0 1 1 20.160 4

13451701 100 0.020544 0.0 0.0 2

13451702 100 0.016645 0.0 0.0 3

13451703 100 0.010748 0.0 0.0 4

13451901 0.04623 0.600 0.600 0. 0. 0. 0. 1. 2

13451902 0.04623 0.487 0.487 0. 0. 0. 0. 1. 3

13451903 0.04623 0.315 0.315 0. 0. 0. 0. 1. 4 5**55**55**5*55*****.55s**5**5*******.*5**55*5*5****

* steam generator heat structures - intact loop *

*5**5.5*5**********.5*.5*******5*5*.****55**5*5*5**

* steam generator u-tubes incoloy 800

* no crud layer, I space interval between mesh points

* wall thickness set to 1.1 mm instead of 1.2 mm s*ss.*5***************************5**55********5***

1120300042 2 2 1 0.0098

112031000 1

11203101 1 0.0109

112032017 1

112033010.0 1

11203401573.00 1 569.00 2

11203501 120030000 10000 1 0 0.18472565 8

11203502 120110000 10000 1 0 0.3694513 12

11203503 120150000 10000 1 0 0.7389026 20

11203504 120230000 10000 1 0 1.4997240 22

11203505 120250000 10000 1 0 0.7389026 30

11203506 120330000 10000 1 0 0.3694513 34

11203507 120370000 10000 1 0 0.18472565 42

11203601530010000 10000 1 0 0.2054601754 8

11203602 530090000 10000 1 0 0.410920325

12

11203603 530130000 10000 1 0 0.82184065 20

11203604 545010000 0 1 0 1.6680604 22

11203605 530200000-10000 1 0 0.82184065 30

11203606 530120000 -10000 1 0 0.410920325

34

11203607 530080000 -10000 1 0 0.205460175 42

11203701 0 0.0 0.0 0.0 42

11203801 0.0196 0.1250 0.1250 0. 0. 0. 0. 1. 8

11203802 0.0196 0.25 0.25 0. 0. 0. 0. 1. 12

11203803 0.0196 0.500 0.500 0. 0. 0. 0. 1. 20

11203804 0.0196 1.014832 1.014832 0. 0. 0. 0. 1. 22

11203805 0.0196 0.500 0.500 0. 0. 0. 0. 1. 30

11203806 0.0196 0.2500 0.2500 0. 0. 0. 0. 1. 34

11203807 0.0196 0.125 0.125 0. 0. 0. 0. 1. 42

11203901 0.02 0.1250 0.1250 0. 0. 0. 0. 1. 8

11203902 0.02 0.2500 0.2500 0. 0. 0. 0. 1. 12

11203903 0.02 0.500 0.500 0. 0. 0. 0. 1. 20

11203904 0.02 1.014832 1.014832 0. 0. 0. 0. 1. 22

11203905 0.02 0.500 0.500 0. 0. 0. 0. 1. 30

11203906 0.02 0.2500 0.2500 0. 0. 0. 0. 1. 34

11203907 0.02 0.1250 0.1250 0. 0. 0. 0. 1. 42 s*g 5*5*5*5 5*o 5*5*** s 5*tue*5 -m*5t**ril.4 71 **5 

* sg riser/downcomer shroud tube - material 1.4571 *

5S*5* 5**** 55**5**5**5 55**5****** s*5*** ******** ~*****

1530100022 2 2 1

153011000 1

15301101 1 0.1525

15301201 5 1

153013010.0 1

15301401 568.13 2

15301501 530010000 10000 1

15301502 530090000 10000 1

15301503 530130000 10000 1

15301504 545010000 0 1

15301505 550010000 0 1

15301601 510200000-10000 1

15301602 510120000 -10000 1

15301603 510080000 -10000 1

15301604 500010000 0 1

15301605 555010000 0 1

15301701 0 0.0 0.0 0.0

0.1505

0 0.118202425 8

0 0.23640485 12

0 0.4728097 20

0 1.3257584 21

0 0.561459 22

0 0.119773225 8

0 0.23954645 12

0 0.479092875 20

0 1.3433764 21

0 0.568921 22

22

15301801 0.1265 0.1250 0.1250 0. 0. 0. 0. 1. 8

15301802 0.1265 0.250 0.250 0. 0. 0. 0. 1. 12

15301803 0.1265 0.500 0.500 0. 0. 0. 0. 1. 20

15301804 0.2206 !.402 1.402 0. 0. 0. 0. 1. 21

15301805 0.13017 0.59375 0.59375 0. 0. 0. 0. 1. 22

15301901 0.04989 0.1250 0.1250 0. 0. 0. 0. 1. 8

15301902 0.04989 0.250 0.250 0. 0. 0. 0. 1. 12

15301903 0.04989 0.2500 0.2500 0. 0. 0. 0. 1. 20

15301904 0.04989 1.402 1.402 0. 0. 0. 0. 1. 21

15301905 0.484026 0.59375 0.59375 0. 0. 0. 0. 1. 22 ss*ss*****sss****ssssss*sss*ss*sssss***s sssss** 

* sgfillertube-material 1.4571 * 5*5.*..5*5**55**55*.*55**5*5.5*555*55.*****5*5*5**

15302000 11 2 2 1 0.07615

153021000 1

153021011 0.08415

15302201 5 1

15302301 0.0 1

15302401 568.13 2

A7-21
153025010 0 0 1 0.25 4

153025020 0 0 1 0.5 6

153025030 0 0 1 1.0 10

153025040 0 0 1 0.705 11

15302601 530010000 10000 1 1 025 4

15302602 530050000 10000 1 1 0.5 6

15302603 530070000 10000 1 1 1.0 10

15302604 545010000 0 1 1 0.705 11

15302701 0 0.0 0.0 0.0 11

15302801 0.1523 0.25 0.25 0. 0. 0. 0. 1. 4

15302802 0.1523 0.5 0.5 0. 0. 0. 0. 1. 6

15302804 0.1523 1.0 1.0 0. 0. 0. 0. 1. 10

15302805 0.1523 0.705 0.705 0. 0. 0. 0. I. 11

15302901 0.016 0.25 0.25 0. 0. 0. 0. 1. 4

15302902 0.016 0.5 0.5 0. 0. 0. 0. 1. 6

15302903 0.016 1.0 1.0 0.'0. 0. 0. 1. 10

15302904 0.016 0.705 0.705 0. 0. 0. 0. 1. 11

* sg filler tube top plate - material 1.4571

15303000 1 3 1 1 0.0

153031000 1

153031012 0.03

15303201 5 2

15303301 0.0 2

15303401 568.13 3

15303501 0 0 0 0 0.022246 1

15303601545010000 0 1 0 0.022246 1

15303701 0 0.0 0.0 0.0 1

15303801 0.0 1.402 1.402 0. 0. 0. 0. 1. 1

15303901 0.0 1.402 1.402 0. 0. 0. 0. 1. 1

* lower connecting flange, sg walls material 1.4571

151000004 3 2 1 0.1645

151001000 1

151001012 0.2625

15100201 5 2

15100301 0.0 2

15100401 568.13 3

15100501510090000 10000 3124 0 0.03876 4

15100601-1 0 3501 0 0.06185 4

15100701 0 0.0 0.0 0.0 4

15100801 0.329 0.0375 0.0375 0. 0. 0. 0. 1. 4

15100901 0.525 0.0375 0.0375 0. 0. 0. 0. 1. 4

* sg walls - lower section material 1.4571 *

1510100021 3 2 1 0.1645

151011000 1

151011012 0.1865

15101201 5 2

151013010.0 2

15101401 535.15 3

15101501510200000-10000 3124 0 0.09043864

15101502510160000-10000 3124 0 0.129198 8

15101503 510120000-10000 3124 0 0.25839612

15101504 510080000-10000 3124 0 0.516792 20

15101505 500010000 0 3124 0 1.4490847 21

15101601-1 0 3501 0 0.102533725 4

15101602-1 0 3501 0 0.14647675 8

15101603 -1 0 3501 0 0.292953525 12

15101604-1 0 3501 0 0.585907025 20

15101605-1 0 3501 0 1.6423833 21

151017010 0.0 0.0 0.0 21

15101801 0.04625 0.0875 0.08750. 0. 0. 0. 1. 4

15101802 0.04625 0.1250 0.1250 0. 0. 0. 0. 1. 8

15101803 0.04625 0.2500 0.2500 0. 0. 0. 0. 1. 12

15101804 0.05625 0.500 0.500 0. 0. 0. 0. 1. 20

15101805 0.04625 1.402 1.402 0. 0. 0. 0. 1. 21

15101901 0.373 0,0875 0.0875 0. 0. 0. 0. 1. 4

15101902 0.373 0.1250 0.1250 0. 0. 0. 0. 1. 8

15101903 0.373 0.2500 0.2500 0. 0. 0. 0. 1. 12

15101904 0.373 0.500 0.500 0. 0. 0. 0. 1. 20

15101905 0.373 1.402 1.402 0. 0. 0. 0. 1. 21

* htc. vs time, set to high value for trial run

20212400 htc-t

20212401 0.0 10000.0

20212402 1.0e6 10000.0 **5*5*5* 5* *5* **5*55*5* 5*5* 5*5* ****** *5***** *** *

sg feedwater inlet manifold & flange material 1.4571 *

15550000 1 3 2 1 0.205

155501000 1

155501012 0.400

15550201 5 2

15550301 0.0 2

15550401 568.13 3

15550501 5550100000 1 0 0.28208 1

15550601-1 0 3501 0 0.55041 1

15550701 0 0.0 0.0 0.0 1

15550801 0.410 0.219 0.219 0. 0. 0. 0. 1. 1

15550901 0.800 0.219 0.219 0. 0. 0. 0. 1. 1

* sg walls - middle section material 1.4571 *

155510001 3 2 1 0.205

155511000 1

155511012 0.230

15551201 5 2

15551301 0.0 2

15551401 568.13 3

15551501 555010000 0 1 0 0.89391 1

15551601-1 0. 3501 0 1.00292 1

15551701 0 0.0 0.0 0.0 1

15551801 0.36007 0.694 0.694 0. 0. 0. 0. 1. 1

15551901 0.460 0.694 0.694 0. 0. 0. 0. 1. 1

* sg walls - upper section material 1.4571

15601000 2 3 2 1 0.2335

156011000 1

156011012 0.2625

15601201 5 2

15601301 0.0 2

15601401 568.13 3

* steam dome section **

15601501 560010000 0 1 1 0.593 1

15601601-1 0 3503 1 0.593 1

15601701 0 0.0 0.0 0.0 1

15601801 0.46179 0.593 0.593 0. 0. 0. 0. 1. 1

15601901 0.525 0.593 0.593 0. 0. 0. 0. 1. 1

* separator section

15601502 552010000 0 1 1 1.10 2

15601602-1 0 3501 1 11.0 2

156017020 0.0 0.0 0.0 2

15601802 0.46179 1.10 1.10 0. 0. 0. 0. 1. 2

15601902 0.525 1.10 1.10 0. 0. 0. 0. 1. 2

A7-22
8••••••s•sas•.8ssssa••ass•4asaas*aa*•ss•a*ssaaasa8

top of il sg steam dome, part spherical material 1.4571* asa**aa*•a*a0a**••aas•8a0*•••*••••••*•a•s*••*••*••

e•*5

15602000 1 3 3 1 0.325

156021000 1

15602101 2 0.605

15602201 5 2

15602301 0.0 2

15602401 568.13 3

15602501 560010000 0 1 1 0.0625 1

15602601 -1 0 3503 1 0.0625 1

15602701 0 0.0 0.0 0.0 1

15602801 0.0 0.25 0.25 0. 0. 0. 0. 1. 1

15602901 0.0 0.25 0.25 0. 0. 0. 0. 1. 1 *•**•••s•a••sa•a•*ssas••*••*a••*sa*••*•a••s•aaa*•a

a steam line, intact loop sg to manifold *

* typical heat loss along both steam lines assumed s***as*as*ss***s*s*s **a***ass..*a*s***sss*****s***s*

12103504 210130000 10000

12103505 210150000 10000

12103506 210190000 10000

12103507 210210000 10000

12103601 630010000 10000

12103602 630050000 10000

12103603 630070000 10000

12103604 645010000 0 1

12103605 630100000 -10000

12103606 630060000 -10000

12103607 630040000 -10000

12103701 0 0.0 0.0

1 0 0.4986716 12

1 0 0.49260175 16

1 0 0.2463009 18

1 0 0.12315045 22

1 0 0.13697345 4

1 0 0.2739469 6

1 0 0.54789375 10

0 0.5546449 12

1 0 0.54789375 16

1 0 0.2739469 18

1 0 0.13697345 22

0.0 22

12103801 0.0196 0.2500 0.2500 0. 0. 0. 0. 1. 4

12103802 0.0196 0.5 0.5 0. 0. 0. 0. 1. 6

12103803 0.0196 1.000 1.000 0. 0. 0. 0. 1. 10

12103804 0.0196 1.012322 1.012322 0. 0. 0. 0. 1. 12

12103805 0.0196 1.000 1.000 0. 0. 0. 0. 1. 16

12103806 0.0196 0.500 0.500 0. 0. 0. 0. 1. 1I

12103807 0.0196 0.2500 0.2500 0. 0. 0. 0. 1. 22

12103901 0.02 0.2500 0.2500 0. 0. 0. 0. 1. 4

12103902 0.02 0.500 0.500 0. 0. 0. 0. 1. 6

12103903 0.02 1.000 1.000 0. 0. 0. 0. 1. 10

12103904 0.02 1.012322 1.012322 0. 0. 0. 0. 1. 12

12103905 0.02 1.000 1.000 0. 0. 0. 0. 1. 16

12103906 0.02 0.500 0.500 0. 0. 0. 0. 1. 18

12103907 0.02 0.2500 0.2500 0. 0. 0. 0. 1. 22

s•••s•*•••*•*•••• shrouda•*tu*b materialaas1.4571•

* ag riser/downcomer shroud tube material 1.457 1*

*****************ssas**s*s******s*ss*a*****sass*****s*

15641000 1 3 2

156411000 I

15641101 2 0.03805

15641201 5 2

156413010.0 2

15641401 568.13 3

15641501 564010000 0 1

15641601 -1 0 3602

1 0.03445

1 6.5 1

I 6.5 1

15641701 0 0.0 0.0 0.0 1

15641801 0.0 6.5 6.5 0. 0. 0. 0. 1. 1

15641901 0.0 6.5 6.5 0. 0. 0. 0. 1. 1

steam line, broken loop sg to manifold *•••*••*••*a*aa*sa0aa••s•**sa•*ss8••*••s••as•s*ss.*

166410001 3 2 1 0.02155

166411000 1

166411012 0.02415

16641201 5 2

16641301 0.0 2

16641401 568.13 3

16641501 664010000 0 1 1 5.8 1

16641601 -1 0 3602 1 5.8 1

16641701 0 0.0 0.0 0.0 1

16641801 0.0 5.8 5.8 0. 0. 0. 0. 1. 1

16641901 0.0 5.8 5.8 0. 0. 0. 0. 1. 1

• steam generator heat structures - broken loop

• steam generator u-tubes incoloy 800

" no crud layer, I space interval between mesh points

" wall thickness set to 1.1 mm instead of 1.2 mm sssa*asss*aa**s*a*s**s***s*a*s*a***************a**

16301000 12 2 2 1

163011000 1

16301101 1 0.1020

16301201 5 1

16301301 0.0 1

16301401568.13 2

16301501 630010000 10000 1

16301502 630050000 10000 1

16301503 630070000 10000 1

16301504 645010000 0 1

16301505 650010000 0 1

16301601 610100000-10000 1

16301602 610060000-10000 1

16301603 610040000 -10000 1

16301604 600010000 0 1

16301605 655010000 0 1

16301701 0 0.0 0.0 0

16301801 0.060144 0.2500 0.

0.1005

0 0.15786505 4

0 0.3157301 6

0 0.63146015 10

0 0.8234240 11

0 0.328621 12

0 0.16022125 4

0 0.32044245 6

0 0.6408849 10

0 0.8357139 11

0 0-333526 12

.0 12

.2500 0. 0. 0. 0. 1. 4

16301802 0.060144 0.500 0.500 0. 0. 0. 0. 1. 6

16301803 0.060144 1.000 1.000 0. 0. 0. 0. 1. 10

16301804 0.157657 1.304 1.304 0. 0. 0. 0. 1. 11

16301805 0.06863 0.5204 0.5204 0. 0. 0. 0. 1. 12

16301901 0.024706 0.2500 0.2500 0. 0. 0. 0. 1. 4

16301902 0.024706 0.500 0.500 0. 0. 0. 0. 1. 6

16301903 0.024706 1.000 1.000 0. 0. 0. 0. 1. 10

16301904 0.024706 1.304 1.304 0. 0. 0. 0. 1. 11

16301905 0.21192 0.5204 0.5204 0. 0. 0. 0. 1. 12 *••**••***• •a** ***••*a**a•aas*sa*••*a*•••*••***

* sg filler tube - material 1.4571

1630200011 2 2 1 0.0629

163021000 1

16302101 1 0.07

163022015 1

16302301 0.0 1

16302401 568.13 2

163025010 0 0 1 0.25 4

163025020 0 0 1 0.5 6

163025030 0 0 1 1.0 10

1210300022 2 2 1

121031000 1

12103101 1 0.0109

12103201 7 1

12103301 0.0 1

12103401 573.0 1 569.00

12103501210030000 10000 1

12103502210070000 10000 1

1210350321009000010000 1

0.0098

2

0

0

0

0.123150454

0.2463009 6

0.49260175 10

A7-23
163025040 0 0 1 0.71 11

16302601 630010000 10000 1 1 0.25 4

16302602 630030000 0 1 1 0.5 6

16302603 630040000 10000 1 1 1.0 10

16302604 645010000 0 1 1 0.71 11

16302701 0 0.0 0.0 0.0 11

16302801 0.1258 0.25 0.25 0. 0. 0. 0. 1. 4

16302802 0.1258 0.5 0.5 0. 0. 0. 0. 1. 6

16302803 0.1258 1.0 1.0 0. 0. 0. 0. 1. 10

16302804 0.1258 0.71 0.71 0. 0. 0. 0. 1. 11

16302901 0.007 0.25 0.25 0. 0. 0. 0. 1. 4

16302902 0.007 0.5 0.5 0. 0. 0. 0. 1. 6

16302903 0.007 1.0 1.0 0. 0. 0. 0. 1. 10

16302904 0.007 0.71 0.71 0. 0. 0. 0. 1. 11

* sg filler tube top plate - material 1.4571 *

16303000 1 3 1 1 0.0

163031000 1

163031012 0.026

16303201 5 2

16303301 0.0 2

16303401 568.13 3

16303501 0 0 0 0 0.015394 1

16303601645010000 0 1 0 0.015394 1

16303701 0 0.0 0.0 0.0 1

16303801 0.0 1.304 1.304 0. 0. 0. 0. 1. 1

16303901 0.0 1.304 1304 0. 0. 0. 0. 1. 1

* lower connecting flange, sg walls material 1.4571

161000002 3 2 1 0.108

161001000 1

161001012 0.1775

16100201 5 2

16100301 0.0 2

16100401 568.13 3

16100501 610050000 10000 3124 0 0.0271435

2

16100601 -1 0 3601 0 0.04461052

16100701 0 0.0 0.0 0.0 2

16100801 0.216 0.040 0.040 0. 0. 0. 0. 1. 2

16100901 0.355 0.040 0.040 0. 0. 0. 0. 1. 2

* sg walls - lower section material 1.4571 *

1610100011 3 2 1 0.108

161011000 1

161011012 0.122

161012015 2

161013010.0 2

16101401 535.15 3

16101501610100000-10000 3124 0 0.142502652

16101502 610080000-10000 3124 0 0.16964625 4

16101503 610060000-10000 3124 0 0.3392925 6

16101504 610040000-10000 3124 0 0.678585 10

16101505 600010000 0 3124 0 0.88487 11

16101601-1 0 3601 0 0.16097522

16101602-1 0 3601 0 0.19163754

16101603-1 0 3601 0 0.383275 6

16101604-1 0 3601 0 0.76655 10

16101605-1 0 3601 0 0.99958 11

161017010 0.0 0.0 0.0 11

16101801 0.023333 0.21 0.21 0. 0. 0. 0. 1. 2

16101802 0.023333 0.25 0.25 0. 0. 0. 0. 1. 4

16101803 0.023333 0.5 0.5 0. 0. 0. 0. 1. 6

16101804 0.023333 1.0 1.0 0. 0. 0. 0. 1. 10

16101805 0.023333 1.304 1.304 0. 0. 0. 0. 1. 11

16101901 0.244 0.21 0.21 0. 0. 0. 0. 1. 2

16101902 0.244 0.25 0.25 0. 0. 0. 0. 1. 4

16101903 0.244 0.5 0.5 0. 0. 0. 0. 1. 6

16101904 0.244 1.0 1.0 0. 0. 0. 0. 1. 10

16101905 0.244 1.304 1.304 0. 0. 0. 0. 1. 11

* sg feedwater inlet manifold & flange material 1.4571 *

16550000 1 3 2 1 0.1195

165501000 1

16550101 2 0.250

16550201 5 2

16550301 0.0 2

16550401 568.13 3

165505016550100000 1 0 0.15017 1

16550601-1 0 3601 0 0.31416 1

16550701 0 0.0 0.0 0.0 1

16550801 0.239 0.200 0.200 0. 0. 0. 0. 1. 1

16550901 0.500 0.200 0.200 0. 0. 0. 0. 1. 1

* sg walls - middle section material 1.4571 *

165510001 3 2 1 0.1195

165511000 1

165511012 0.1345

16551201 5 2

16551301 0.0 2

16551401 568.13 3

16551501655010000 0 1 0 0.80791 1

16551601-1 0 3601 0 0.90932 1

165517010 0.0 0.0 0.0 1

16551801 0.180885 1.076 1.076 0. 0. 0. 0. 1. 1

16551901 0.269 1.076 1.076 0. 0. 0. 0. 1. 1

* sg walls - upper section material 1.4571

166010002 3 2 1 0.1350

166011000 1

166011012 0.1520

16601201 5 2

16601301 0.0 2

16601401 568.13 3

* steam dome section

16601501660010000 0 1 1 0.681 1

16601601 -1 0 3603 1 0.681 1

16601701 0 0.0 0.0 0.0 1

16601801 0.26061 0.681 0.681 0. 0. 0. 0. 1. 1

16601901 0.304 0.681 0.681 0. 0. 0. 0. 1. 1

* separator section

16601502 652010000 0 1 1 1.10 2

16601602-1 0 3601 1 1.10 2

166017020 0.0 0.0 0.0 2

16601802 0.26061 1.10 1.10 0. 0. 0. 0. 1. 2

16601902 0.304 1.10 1.10 0. 0. 0. 0. 1. 2

* top of bI sg steam dome, part spherical material 1.4571*

16602000 1 3 3 1 0.304

166021000 1

166021012 0.324

16602201 5 2

166023010.0 2

A7-24
16602401 568.13 3

16602501 660010000 0 1 1 0.0625 1

16602601 -1 0 3603 1 0.0625 1

16602701 0 0.0 0.0 0.0 1

16602801 0.0 0.150 0.150 0. 0. 0. 0. 1. 1

16602901 0.0 0.150 0.150 0. 0. 0. 0. 1. 1

•t*

* this section contains all the heat structures which

* define the pipe walls in the intact and broken loops.

• it excludes the large bulks of metal contained in

* the flanges. pump, gamma densitometers and supports, ,

* components defined in this section:-

Sheat structure geometries: 1000,1001 2000,2001

* components referenced in this section:-

11000801 0.0 .682 .682 0. 0. 0. 0. 1. 1

Sstructure number 2 dhss cylinder number(s):- 10 ,

*links to:- component 110

11000502 110020000 0 1 1 .626 2

11000602 -2 0 3102 1 .626 2

11000702 0 0.0 0.0 0.0 2

11000802 0.0 .626 .626 0. 0. 0. 0. 1. 2

* structure number 3 dhss cylinder number(s):- 13

* links to:- component 130

11000503 130010000 0 1 1 .626 3

11000603 -2 0 3103 1 .626 3

11000703 0 0.0 0.0 0.0 3

11000803 0.0 .626 .626 0. 0. 0. 0. 1. 3

• structure number 4 dhss cylinder number(s):- 19,23

• snglvol: 100 *t200,260

* branch: 105,133,137,145 203,223,230,235

* pump: 135 225

* links to:- component 133

• pipe: 110,130,140 206,220

* tables: 001 101,102,103 201,202,203

* implementation:-

* the pipes in the loops are either small or large bore and

* either thin or thick walled, these 4 different geometries

* are defined with separate heat structure geometries, then

• each section of pipe is defined as a heat structure number

• within each geometry.

• the instrumented spools also have an outer wall heat loss

* defined to mimic instrument cooling, if required this can

* be 'turned off by specifying' 0 0 0' as the first 3

* words on the 601 series of cards.

* the rest of the loop metalwork such as flanges is

* specified in a separate section to facilitate the

* construction of different input decks for small and

* large break problems. (for large breaks this section

* by itself will be adequate.)

• thick walled tubes in the intact loop

11000504 133010000 0 1 1 .767 4

11000604 -2 0 3104 1 .767 4

11000704 0 0.0 0.0 0.0 4

11000804 0.0 .767 .767 0. 0. 0. 0. 1. 4

• structure number 5 dhss cylinder number(s):- 26,29

* links to:- component 137

11000505 137010000 0 1 1 .737 5

11000605 -2 0 3105 1 .737 5

11000705 0 0.0 0.0 0.0 5

11000805 0.0 .737 .737 0. 0. 0. 0. 1. 5

structure number 6 dhss cylinder number(s):- 35,39

* links to:- component 145

* basic thick wall geometry

11000000 6 7 2 1 36.85d-3

11000100 0 1

11000101 6 53.85d-3

11000201 5 6

11000301 0.0 6

11000401 572.7

* heat structures using the basic geometry

11000506 145010000 0 1 1 .687 6

11000606 -2 0 3106 1 .687 6

11000706 0 0.0 0.0 0.0 6

11000806 0.0 .687 .687 0. 0. 0. 0. 1. 6

* thin walled tubes in the intact loop

* basic thin wall geometry

11001000

11001100

11001101

11001201

11001301

11001401

8 5 2 1 36.85d-3

0 1

4 44.45d-3

5 4

0.0 4

572. 5

* structure number I dhss cylinder number(s):- 1,3

* links to:- component 100

11000501 100010000 0 1 1 .682 1

11000601 -2 0 3101 1 .682 1

11000701 0 0.0 0.0 0.0 1

* heat structures using the basic geometry

• structure number I dhss cylinder number(s):- 7 (part)

A7-25
* links to:- component 105

11001501 105010000 0 1 1 .682 1

11001601 0 0 0 1 .682 1

11001701 0 0.0 0.0 0.0 1

11001801 0.0 .682 .682 0. 0. 0. 0. 1. 1

• structure number 2 dhss cylinder number(s):- 7 (part) ,

* links to:- component 110

11001502 110010000 0 1 1 1.60 2

11001602 0 0 0 1 1.60 2

11001702 0 0.0 0.0 0.0 2

11001802 0.0 1.60 1.60 0. 0. 0. 0. 1. 2

• structure number 3 dhss cylinder number(s):- 16 (part)

• links to:- component 130

11001503 130020000 0 1 1 1.171 3

11001603 0 0 0 1 1.171 3

11001703 0 0.0 0.0 0.0 3

11001803 0.0 1.171 1.171 0. 0. 0. 0. 1. 3

* structure number 4 dhss cylinder number(s):- 16 (part)

• links to:- component 130

11001504 130030000 0 1 1 1.611 4

11001604 0 0 0 1 1.611 4

11001704 0 0.0 0.0 0.0 4

11001804 0.0 1.611 1.611 0. 0. 0. 0. 1. 4

* structure number 5 dhss cylinder number(s):- 16 (part)

,

* links to:- component 130

11001505 130040000 0 1 1 .625 5

11001605 0 0 0 1 .625 5

11001705 0 0.0 0.0 0.0 5

11001805 0.0 .625 .625 0. 0. 0. 0. 1. 5

*structure number 6 dhss cylinder number(s):- 16 (part)

* links to:- component 130

11001506 130050000 0 1 1 1.61 6

11001606 0 0 0 1 1.61 6

11001706 0 0.0 0.0 0.0 6

11001806 0.0 1.61 1.61 0. 0. 0. 0. 1. 6

* structure number 7 dhss cylinder number(s):- 23 (part)

* links to:- component 140

11001507 140010000 0 1 1 1.161 7

11001607 0 0 0 1 1.161 7

11001707 0 0.0 0.0 0.0 7

11001807 0.0 1.161 1.161 0. 0. 0. 0. 1. 7

* structure number 8 dhss cylinder number(s):- 23 (part)

* links to:- component 140

S

11001508 140020000 0 1 1 131 8

11001608 0 0 0 1 1.31 8

11001708 0 0.0 0.0 0.0 8

,11001808 0.0 1.31 1.31 0. 0. 0. 0. 1. 8

• thick walled tubes in the broken loop

• basic thick wall geometry

12000000 6 7 2 1 23.05d-3

12000100 0 1

12000101 6 40.05d-3

12000201 5 6

12000301 0.0 6

12000401 572.7

• heat structures using the basic geometry

• structure number I dhss cylinder number(s):- 41,43

• links to:- component 200

*

12000501 200010000 0 1 1 .624 1

12000601 -2 0 3207 1 .624 1

12000701 0 0.0 0.0 0.0 1

12000801 0.0 .624 .624 0. 0. 0. 0. 1. 1

• structure number 2 dhss cylinder number(s):- 56

• links to:- component 206

12000502 206030000 0 1 1 .684 2

12000602 -2 0 3202 1 .684 2

12000702 0 0.0 0.0 0.0 2

12000802 0.0 .684 .684 0. 0. 0. 0. 1. 2

* structure number 3 dhss cylinder number(s):- 60

• links to:- component 220

12000503 220010000 0 1 1 .684 3

12000603 -2 0 3203 1 .684 3

12000703 0 0.0 0.0 0.0 3

12000803 0.0 .684 .684 0. 0. 0. 0. 1. 3

• structure number 4 dhss cylinder number(s):- 71

• links to:- component 223 *

12000504 223010000 0 1 1 1.161 4

12000604 -2 0 3204 1 1.161 4

12000704 0 0.0 0.0 0.0 4

12000804 0.0 1.161 1.161 0. 0. 0. 0. 1. 4

• structure number 5 dhss cylinder number(s):- 76,79

,

links to:- component 230

12000505 230010000 0 1 1 .858 5

12000605 -2 0 3205 1 .858 5

12000705 0 0.0 0.0 0.0 5

12000805 0.0 .858 .858 0. 0. 0. 0. 1. 5

A7-26
* structure number 6 dhss cylinder number(s):- 88,94

* links to:- component 260

12000506 260010000 0 1 1 .624 6

12000606 -2 0 3206 1 .624 6

12000706 0 0.0 0.0 0.0 6

12000806 0.0 .624 .624 0. 0. 0. 0. 1. 6

* thin walled tubes in the broken loop

* basic thin wall geometry

12001000 9 5 2 1 23.05d-3

12001100 0 1

12001101 4 30.15d-3

12001201 5 4

12001301 0.0 4

12001401 572.5

* heat structures using the basic geometry

* structure number I dhss cylinder number(s):- 48

* links to:- component 203

12001501 203010000 0 1 1 .885 1

12001601 -1 0 3208 1 .885 1

12001701 0 0.0 0.0 0.0 1

12001801 0.0 .885 .885 0. 0. 0. 0. 1. 1

* structure number 2 dhss cylinder number(s):- 49

links to:- component 206

12001502 206010000 0 1 1 0.686 2

12001602 -1 0 3208 1 0.686 2

12001702 0 0.0 0.0 0.0 2

12001802 0.0 0.686 0.686 0. 0. 0. 0. 1. 2

* structure number 3 dhss cylinder number(s):- 53

* links to:- component 206

12001503 206020000 0 1 1 .686 3

12001603 0 0 0 1 .686 3

12001703 0 0.0 0.0 0.0 3

12001803 0.0 .686 .686 0. 0. 0. 0. 1. 3

astructure number 4 dhss cylinder number(s):- 64

a links to:- component 220

12001504 220020000 0 1 1 1.502 4

12001604 0 0 0 1 1.502 4

12001704 0 0.0 0.0 0.0 4

12001804 0.0 1.502 1.502 0. 0. 0. 0. 1. 4

*structure number 5 dhss cylinder number(s):- 68 (part)

*links to:- component 220

12001505 220030000 0 1 i .741 5

12001605 0 0 0 1 .741 5

12001705 0 0.0 0.0 0.0 5

12001805 0.0 .741 .741 0. 0. 0. 0. I. 5

* structure number 6 dhss cylinder number(s):- 68 (part)

a links to:- component 220

12001506 220040000 0 1 1 .732 6

12001606 0 0 0 1 .732 6

12001706 0 0.0 0.0 0.0 6

12001806 0.0 .732 .732 0. 0. 0. 0. 1. 6

* structure number 7 dhss cylinder number(s):- 68 (part)

* links to:- component 220

12001507 220050000 0 1 1 .741 7

12001607 0 0 0 1 .741 7

12001707 0 0.0 0.0 0.0 7

12001807 0.0 .741 .741 0. 0. 0. 0. 1. 7

a structure number 8 dhss cylinder number(s):- 83

links to:- component 240

12001508 240010000 0 1 1 1.263 8

12001608 0 0 0 1 1263 8

12001708 0 0.0 0.0 0.0 8

12001808 0.0 1.263 1263 0. 0. 0. 0. 1. 8

a structure number 9 dhss cylinder number(s):- 89

* links to:- component 260

12001509 250010000 0 1 1 .988 9

12001609 0 0 0 1 .988 9

12001709 0 0.0 0.0 0.0 9

12001809 0.0 .988 .988 0. 0. 0. 0. 1. 9

* this section contains all the heat structures which

* define the flanges in the intact and broken loops.

* components defined in this section:-

a heatstructuregeometries: 1010,1011 2010,2011

*components referenced in this section:-

Ssnglvol: 100 260

* branch: 133,137,145 223,230,235

* pipe: 110,130,140 200,220

a implementation:-

,

* four kinds of heat structure are defined:-

* a and V flanges for intact and broken loops

a gamma densitometer in intact and broken loop

a all the flanges defined in the dhss are expressed

A7-27
*

*

*

*

*

*

*

*

*

*

in terms of these structures, despite a loss of

correctness in the thermal time constants,

to reduce the number of heat structures needed.

the heat structures so defined are then lumped

together to form composite structures having the

same total mass as the individual flanges, the flanges

so defined are completely distinct from the metal in

the pipework which is defined in a separate section.

in this way input decks can be taylored to fit the

problem being studied, either large break, small

break or special transient

* links to:- component 133

11010504 133010000 0 1 1 .316 4

11010604 0 0 0 1 .316 4

11010704 0 0.0 0.0 0.0 4

11010804 0.0 .316 .316 0. 0. 0. 0. 1. 4

* structure no. 5 dhss cylinder number(s):- 27,30,31,33,109

* links to:- component 137

* the process of lumping the flanges together is governed

* by the following constraints:-

* metal masses in horizontal and vertical sections

* cannot be lumped together (incorrect buoyancy)

* metal masses on different sides of heat sources

* or sinks cannot be lumped together.

* 'b' type flanges in the intact loop

* basic 'b' type flange geometry

11010505 137010000 0 1 1 .241 5

11010605 0 0 0 1 .241 5

11010705 0 0.0 0.0 0.0 5

11010805 0.0 .241 .241 0. 0. 0. 0. 1. 5

* structure no. 6 dhss cylinder number(s):- 34,36,37,40

* links to:- component 145

11010506 145010000 0 1 1 .106 6

11010606 0 0 0 1 .106 6

11010706 0 0.0 0.0 0.0 6

11010806 0.0 .106 .106 0. 0. 0. 0. 1. 6

* gamma densitometer in intact loop

* measurement locations 11, 14, 16

* basic geometry

11010000

11010100

11010101

11010201

11010301

11010401

6 7 2 1 36.85d-3

0 1

6 97.5d-3

5 6

0.0 6

572. 7

11011000

11011100

11011101

11011201

11011301

11011401

3 7 2 1 36.85d-3

0 1

6 90.0d-3

21 6

0.0 6

572.7

* heat structures using the basic geometry

* structure no. I dhss cylinder number(s):- 2,4,5,8

* links to:- component 100

11010501 100010000 0 1 1 .182 1

11010601 0 0 0 1 .182 1

11010701 0 0.0 0.0 0.0 1

11010801 0.0 .182 .182 0. 0. 0. 0. 1. 1

* structure no. 2 dhss cylinder numbers):- 9,11,12,12a

,

* links to:- component 110

11010502 110020000 0 1 1 .125 2

11010602 0 0 0 I .125 2

11010702 0 0.0 0.0 0.0 2

11010802 0.0 .125 .125 0. 0. 0. 0. 1. 2

* structure no. 3 dhss cylinder number(s):- 14a,14,15,17

* heat structures using the basic geometry

* structure no. 1 dhss cylinder number(s):- 6

* links to:- component 100

11011501 100010000 0 1 1 .170 1

11011601 0 0 0 1 .170 1

11011701 0 0.0 0.0 0.0 1

11011801 0.0 .170-.170 0. 0. 0. 0. 1. 1

* structure no. 2 dhss cylinder number(s):- 22

* links to:- component 133

11011502 133010000 0 1 1 .170 2

11011602 0 0 0 1 .170 2

11011702 0 0.0 0.0 0.0 2

11011802 0.0 .170 .170 0. 0. 0. 0. 1. 2

* structure no. 3 dhss cylinder number(s):- 38 * links to:- component 130

11010503 130010000 0 1 1 .125 3

11010603 0 0 0 1 .125 3

11010703 0 0.0 0.0 0.0 3

11010803 0.0 .125 .125 0. 0. 0. 0. 1. 3 S

* structure no. 4 dhss cylinder number(s):- 18,20,21,2425

* 108

* links to:- component 145

11011503 145010000 0 1 1 .170 3

11011603 0 0 0 1 .170 3

11011703 0 0.0 0.0 0.0 3

11011803 0.0 .170 .170 0. 0. 0. 0. 1. 3

A7-28
V a type flanges in the broken loop

• basic 'a' type flange geometry

12010000 6 7 2 1 23.05d-3

12010100 0 1

12010101 6 80.Od-3

12010201 5 6

12010301 0.0 6

12010401 572.7

• heat structures using the basic geometry

• structure no. 1 dhss cylinder number(s):- 42,44,45,46

• 50,51,52,54

• links to:-

12010506

12010606

12010706

12010806

component 260

260010000 0 1 1 .219 6

0 0 0 1 .219 6

0 0.0 0.0 0.0 6

0.0 .219 .219 0. 0. 0. 0. 1. 6

• links to:- component 200

12010501 200010000 0 1 I .409 I

12010601 0 0 0 1 .409 1

12010701 0 0.0 0.0 0.0 1

12010801 0.0 .409 .409 0. 0. 0. 0. 1. 1 0

• structure no. 2 dhss cylinder number(s):- 55,57,58,58a

• links to:- component 200

12010502 206030000 0 1 1 .128 2

12010602 0 0 0 1 .128 2

12010702 0 0.0 0.0 0.0 2

12010802 0.0 .128 .128 0. 0. 0. 0. 1. 2

Sstructure no. 3 dhss cylinder number(s):- 61a,61,62,65 • 66,67,69

links to:- component 220

12010503 220010000 0 1 1 .227 3

12010603 0 0 0 1 .227 3

12010703 0 0.0 0.0 0.0 3

12010803 0.0 .227 .227 0. 0. 0. 0. 1. 3

*structure no. 4 dhss cylinder number(s):- 70,72,73,74,110

• links to:- component 223

12010504 223010000 0 I 1 .380 4

12010604 0 0 0 1 .380 4

12010704 0 0.0 0.0 0.0 4

12010804 0.0 .380 .380 0. 0. 0. 0. 1. 4

• structure no. 5 dhss cylinder number(s):- 77,78,80,81,84 • 111

" gamma densitometer in broken loop

" measurement locations 21, 24, 25, 26

•basic geometry

12011000 4 7 2 1 23.05d-3

12011100 0 1

12011101 6 90.0d-3

12011201 21 6

12011301 0.0 6

12011401 572.7

* heat structures using the basic geometry

• structure no. 1 dhss cylinder number(s):- 47

• links to:- component 200

12011501 200010000 0 1 1 .170 1

12011601 0 0 0 1 .170 1

12011701 0 0.0 0.0 0.0 1

12011801 0.0 .170 .170 0. 0. 0. 0. 1. 1

*structure no. 2 dhss cylinder number(s):- 59

* links to:- component 200

*12011502 206030000 0 1 1 .170 2

*12011602 0 0 0 1 .170 2

*12011702 0 0.0 0.0 0.0 2

12011802 0 0.0 0.0 .170 2

* structure no. 3 dhss cylinder number(s):- 63

• links to:- component 220

*12011503 220010000 0 1 1 .170 3

*12011603 0 0 0 1 .170 3

*12011703 0 0.0 0.0 0.0 3

p12011803 0 0.0 0.0 .170 3

* structure no. 2 dhss cylinder numbe(s):- 75 ,

* links to:- component 223

12011502 223010000 0 1 1 .170 2

12011602 0 0 0 1 .170 2

12011702 0 0.0 0.0 0.0 2

12011802 0.0 .170 .170 0. 0. 0. 0. 1. 2

* structure no. 3 dhss cylinder number(s):- 82 ,

* links to:- component 230

12011503 230010000 0 1 1 170 3

12011603 0 0 0 1 .170 3

12011703 0 0.0 0.0 0.0 3

• links to:- component 230

12010505 230010000 0 1 1 .420 5

12010605 0 0 0 1 .420 5

12010705 0 0.0 0.0 0.0 5

12010805 0.0 .420 .420 0. 0. 0. 0. 1. 5

* structure no. 6 dhss cylinder number(s):- 85,90,91,92,95

A7-29
12011803 0.0 .170 .170 0. 0. 0. 0. 1. 3

* structure no. 4 dhss cylinder number(s):- 93

* links to:- component 260

13100601 -1 0 3301 1 0.315 1

13100701 0 0.0 0.0 0.0 1

13100801 0.0 0.315 0.315 0. 0. 0. 0. 1. 1

• downcomer annulus links to component 305

13100502 305010000 0 1 1 0.487 2

13100602 -I 0 3301 1 0.487 2

13100702 0 0.0 0.0 0.0 2

13100802 0.0 0.487 0.487 0. 0. 0. 0. 1. 2

1 10 downcomer segments linking to component 310

12011504 260010000 0 1 1 .170 4

12011604 0 0 0 1 .170 4

12011704 0 0.0 0.0 0.0 4

12011804 0.0 .170 .170 0. 0. 0. 0. 1. 4

• **•S *5*•*•

" this section contains the heat structures for

* the pressure vessel, the data covers the vessel

" walls, the mounting brackets, stub pipes other than

" the hot and cold leg pipes, the instrument cooling

" effects ,the honeycomb downcomer, ceramic filler and

" upper head cooling.

• it does not include the heater rods.

* components defined in this section:-

b heat structure geometries:- 3100,3101,3102,3103,3104

• 3105,3106,3107,3550

• components referenced in this section:-

* pipes:-

• single volumes:-

* branches:-

310,325,335

320,350

300,305,315,355

* implementation:-

• the vessel walls are modelled as cylinders.

• the stub pipes are modelled separately with heat losses

• to allow for the differential pressure cooling adaptors.

* the upper vessel steel plate with the heater rods in is

* modelled as a part of a sphere to account for the 2d

* conduction effects. it has a fraction of the total

* power dissipated in it which at full power is some

• 22 kw. it models the bulk heat input not the actual

• temperatures reached by the heater rods.

* the honeycomb downcomer is modelled as a cylinder

with

" three regions, inner and outer steel with the centre

" region being a pseudo material which allows for

* partial conduction and radiation effects, the properties

" for this region are a function of t**3. in parts

* the ceramic filler is modelled as an extra inner region

* to this cylinder with the correct outer diameter and

" volume and with an adjusted inner diameter.

* the vessel flanges and power connector are separately

* modelled with heat loss for the copper connector.

• main geometry for vessel wall

13100000 14 5 2 1 156.0d-3

13100100 0 1

13100101 4 171.8d-3

13100201 1 4

13100301 0.0 4

13100401 566.7 5

* upper part of downcomer links to component 300

13100501 300010000 0 1 1 0.315 1

13100503

13100603

13100703

13100803

13100504

13100604

13100704

13100804

13100505

13100605

13100705

13100805

13100506

13100606

13100706

13100806

13100507

13100607

13100707

13100807

13100508

13100608

13100708

13100808

13100509

13100609

13100709

13100809

13100510

13100610

13100710

13100810

13100511

13100611

13100711

13100811

310010000 0 1 1 0.170 3

-1 0 33011 0.170 3

0 0.0 0.0 0.0 3

0.0 0.170 0.170 0. 0. 0. 0. 1. 3

310020000 0 1 1 0.600 4

-1 0 3301 1 0.600 4

0 0.0 0.0 0.0 4

0.0 0.600 0.600 0. 0. 0. 0. 1. 4

310030000 0 1 1 0.740 5

-1 0 3301 1 0.740 5

0 0.0 0.0 0.0 5

0.0 0.740 0.740 0. 0. 0. 0. 1. 5

310040000 0 1 1 0.663 6

-1 0 3301 1 0.663 6

0 0.0 0.0 0.0 6

0.0 0.663 0.663 0. 0. 0. 0. 1. 6

310050000 10000 1 1 0.875

-1 0 3301 1 0.875 8

0 0.0 0.0 0.0 8

0.0 0.875 0.875 0. 0..0. 0. 1. 8

8

310070000 0 1 1 0.663 9

-1 0 33011 0.663 9

0 0.0 0.0 0.0 9

0.0 0.663 0.663 0. 0. 0. 0. 1. 9

310080000 0 1 1 0.282 10

-1 0 33011 0.282 10

0 0.0 0.0 0.0 10

0.0 0.282 0.282 0. 0. 0. 0. 1. 10

310090000 0 1 1 0.390 11

-1 0 33011 0-390 11

0 0.0 0.0 0.0 i1

0.0 0.390 0.390 0. 0. 0. 0. 1. 11

310100000 0 1 1 0.616 12

-1 0 3301 1 0.616 12

0 0.0 0.0 0.0 12

0.0 0.616 0.616 0. 0. 0. 0. 1. 12

* top of lower plenum links to component 315

13100512

13100612

13100712

13100812

315010000 0 1 1 0.175 13

-1 0 33011 .0.175 13

0 0.0 0.0 0.0 13

0.0 0.175 0.175 0. 0. 0. 0. 1. 13

* bottom of lower plenum links to component 320

13100513 320010000 0

13100613 -1 0

13100713 0 0.0

1 1 0.285 14

3301 1 0.285 14

0.0 0.0 14

A7-30
13100813 0.0 0.285 0.285 0. 0. 0. 0. 1. 14

• main geometry - ceramic filler plus honeycomb

downcomer

• links between components 335 and 310

131010006 15 2 1 66.57d-3

131011000 1

131011014 99.0d-3,4 106.0d-3,2 137.0d-3,4 144.0d-3

131012016 4,5 8,22 10,5 14

13101301 0.0 14

131031000 1

131031016 144.0d-3

13103201 5 6

131033010.0 6

13103401 572.00 7

13103501 325020000 0

13103502 355010000 0

13103601 310090000 0

13103602 300010000 0

13103701 0 0.0 0.0

13103801 194.0d-3 0.426

13103802 160.0d-3 0.105

1

1

1

I

0.426

0.105

0.426

0.105

1

2

1

2

0.0 2

0.426 0. 0. 0. 0. 1. 1

0.105 0. 0. 0. 0. 1. 2

13101401 572.00 15

13101501 3350100000 1

13101502 335020000 0 1

13101503 335030000 10000

13101504 335050000 0 1

13101505 335060000 0 1

13101601310080000 0 1

13101602 310070000 0 1

13101603 310060000 -10000

131016043100400000 1

13101605 310030000 0 1

13101701 0 0.0 0.0

13101801 0.06877 0.612 0.

13101802 0.06877 0.663 0.

13101803 0.06877 0.875 0.

13101804 0.06877 0.663 0.

13101805 0.06877 0.740 0.

13101901 50.Od-3 0.612 0.

13101902 50.0d-3 0.663 0.

13101903 50.0d-3 0.875 0.1

13101904 50.0d-3 0.663 0.

13101905 50.0d-3 0.740 0.

1

1

1

1

0.0

612 0.

.663 0.

.875 0.

663 0.

740 0.

612 0.

663 0.

875 0.

663 0.

0 0.

0.612 1

0.663 2

1 0.875 4

0.663 5

0.740 6

0.612 1

0.663 2

1 0.875 4

0.663 5

0.740 6

6

0. 0. 0. 1. 1

0. 0. 0. 1. 2

0. 0. 0. 1. 4

0. 0. 0. 1. 5

0. 0. 0. 1. 6

0. 0. 0. 1. 1

0. 0. 0. 1. 2

0. 0. 0. 1. 4

0. 0. 0. 1. 5

0. 0. 0. 1. 6

13103901 50.0d-3 0.426 0.426 0. 0. 0. 0. 1. 1

13103902 50.0d-3 0.105 0.105 0. 0. 0. 0. 1. 2

* second part for bottom connector

* links components 310 and 325

13104000 1 7 2 1 65.0d-3

131041000 1

13104101 6 144.0d-3

13104201 5 6

131043010.0 6

13104401 572.00 7

13104501325020000 0 1 1 0.160 1

131046013100900000 1 1 0.160 1

13104701 0 0.0 0.0 0.0 1

13104801 130.0d-3 0.160 0.160 0. 0. 0. 0. 1. 1

13104901 50.0d-3 0.160 0.160 0. 0. 0. 0. 1. 1

* main geometry for stubpipes on vessel

" enhanced cooling from all 12 stub-pipes is assumed

" to improve condensation of steam in vessel downcomer.

" the direct heating term is used to input -1.2kw to

* the whole heat structure, distributed equally as * -0.1 kw per stub-pipe.

13105000 12 5 2 1 40.0d-3

13105100 0 1

13105101 4 122.0d-3

13105201 1 4

13105301 0.0 4

13105401 550.5

• upper part of downcomer links to component 300

* main geometry - honeycomb downcomer ,

* links between components 300 and 355

* 305 350

• 310 345

• 310 325

131020005 11 2 1 99.0d-3

131021000 1

131021014 106.0d-3,2 137.0d-3,4 144.0d-3

13102201 5 4,22 6,5 10

13102301 0.0 10

13102401572.00 11

13102501325010000 0 1 1 0.420 1

13102502 345010000 10000 1 1 0.600 3

13102503 350010000 0 1 1 0.487 4

13102504 355010000 0 1 1 0.210 5

13102601310100000 0 1 1 0.420 1

13102602 310020000 -10000 1 1 0.600 3

13102603 305010000 0 1 1 0.487 4

13102604 300010000 0 1 1 0.210 5

13102701 0 0.0 0.0 0.0 5

13102801 160.0d-3 0.420 0.420 0. 0. 0. 0. 1. 1

13102802 160.0d-3 0.600 0.600 0. 0. 0. 0. 1. 3

13102803 160.0d-3 0.487 0.487 0. 0. 0. 0. 1. 4

13102804 160.0d-3 0.210 0210 0. 0. 0. 0. 1. 5

13102901 50.0d-3 0.420 0.420 0. 0. 0. 0. 1. 1

13102902 50.0d-3 0.600 0.600 0. 0. 0. 0. 1. 3

13102903 50.0d-3 0.487 0.487 0. 0. 0. 0. 1. 4

13102904 50.0d-3 0.210 0210 0. 0. 0. 0. 1. 5

* geometry for solid parts of downcomer

• first fbr top and part above bottom connector

• links components 300 and 355

• 310and325

13103000 2 7 2 1 99.0d-3

13105501

13105601

13105701

13105801

300010000 0 1 1 0.144 1

-2 0 3302 1 0.144 1

310 1.0 0.08333 0.0 1

0.0 0.144 0.144 0. 0. 0. 0. 1. 1

* downcomer annulus links to component 305

13105502

13105602

13105702

13105802

305010000 0 i 1 0.144 2

-2 0 33021 0.144 2

310 1.0 0.08333 0.0 2

0.0 0.144 0.144 0. 0. 0. 0. 1. 2

• 10 downcomer segments linking to component 310

13105503

13105603

13105703

13105803

13105504

13105604

13105704

13105704

310010000 10000 1 1 0.144

-2 0 33021 0.144 4

310 1.0 0.08333 0.0 4

0.0 0.144 0.144 0. 0. 0. 0. 1. 4

4

310030000 10000 1 1 0.288 8

-2 0 3302 1 0.288 8

310 1.0 0.08333 0.0 8

0.0 0.288 0.288 0. 0. 0. 0. 1. 8

A7-31
13105505

13105605

13105705

13105805

310070000 10000 1 1 0.144 12

-2 0 33021 0.144 12

310 1.0 0.08333 0.0 12

0.0 0.144 0.144 0. 0. 0. 0. 1. 12

• geometry for thickened vessel walls at supports

13106000 2 5 2 1 156.0d-3

13106100 0 1

13106101 4 187.6d-3

13106201 1 4

13106301 0.0 4

13106401 565.5 .

• upper support structure

* this section contains the heat structures for the

* pressurizer

* components defined in this section:-

* heat structure geometries: 4100,4101

* components referenced in this section:-

pipes: 400,410

* branches: 409,420

• implementation:

*

* the structures defined are the vessel walls, • and surge-line pipe walls (included but not used)

* a 6 cm layer of rockwool insulation is used

* around the outer vessel wall, but this is

* removed in this deck to enhance the pressurizer

* heat losses to a value of about 8kw, concentrated

• at top of pressurizer.

* main geometry for top of pressurizer

13106501

13106601

13106701

13106801

310010000 0 1 1 0.430 1

-1 0 3303 1 0.430 1

0 0.0 0.0 0.0 1

0.0 0.430 0.430 0. 0. 0. 0. 1. 1

* lower support structure

13106502

13106602

13106702

13106802

aI

310080000 0 1 1 0.330 2

-1 0 3303 1 0.330 2

0 0.0 0.0 0.0 2

0.0 0.330 0.330 0. 0. 0. 0. 1. 2

14100000

14100100

14100101

14100201

14100301

14100401

9 5 2 1 62.2d-3

0 1

4 80.0d-3

5 4

0.5 2 0.4 ext. heaters

619.0 5

* geometry for vessel flange and power connector

13107000 2 5 2 1 156.0d-3

13107100 0 1

13107101 4 280.0d-3

13107201 1 4

13107301 0.0 4

13107401 550.5 a

* flange at top of vessel

13107501 300010000 0 1 1 0.070 1

13107601 -1 0 3304 1 0.070 1

13107701 0 0.0 0.0 0.0 1

13107801 0.0 0.070 0.070 0. 0. 0. 0. 1. 1

bottom flange and power connector

13107502 310100000 0 1 1 0.200 2

13107602 -1 0 3305 1 0.200 2

13107702 0 0.0 0.0 0.0 2

13107802 0.0 0.200 0.200 0. 0. 0. 0. 1. 2

• upper vessel mounting plate with heater rods in it

Stop segment

14100501 409010000 0 1 1 0.775 1

14100601 -1 0 3402 1 0.775 1

14100701 0 0.0 0.0 0.0 1

14100801 0.0 0.775 0.775 0. 0. 0. 0. 1. 1

" middle segments

* pressuriser heaters modelled by lower-most 5 slabs

" each producing 20% of total pressuriser heating power

of up to 20 kw, and this power goes directly into fluid

adjacent to slab. the total power is switched on or off • in steps to maintain liquid at saturation temperature.

•table 401 gives external heat loss coeff as a function

• of time for all slabs in top, middle & bottom segments

•for the purpose of collapsing the steam bubble

* and reducing system pressure.

14100502 410010000 10000 1 1 0.900 7

14100503 410070000 0 1 1 0.585 8

14100504 420010000 0 1 1 0.690 9

14100602 -1 0 34011 0.900 7

14100603 -1 0 3401 1 0.585 8

14100604 -1 0 3401 1 0.690 9

14100702 0 0.0 0.0 0.0 4

14100703 400 0.2 0. 0.0 9

14100802 0.0 0.900 0.900 0. 0. 0. 0. 1. 9

13550000

13550100

13550101

13550201

13550301

13550401

13550402

13550501

13550601

13550701

13550801

1 9 3 1 370.0d-3

0 1

6 500.0d-3 2 565.0d-3

8 6 20 8

1.0 6 0.0 8

620.5 1,733.9 2, 783.7 3, 777.8 4, 721.8 5

620.7 6, 477.9 7, 457.8 8, 440.0 9

355010000 0 1 1 0.01823 1

-2 0 1002 1 0.01823 1

100 .004106 0.0 0.0 1

0.0 90.0d-3 90.0d-3 0. 0. 0. 0. 1. 1

a bottom part with thick flange

•connects to component 420

A7-32
14101000 1 5 3 1 91.2d-3

14101100 0 1

14101101 4 154.6d-3

14101201 5 4

14101301 0.0 4

14101401 619.5

14101501 420010000 0 1 1 0.5 1

14101601 -1 0 3401 1 0.5 1

14101701 0 0.0 0.0 0.0 1

14101801 0.0 0.5 0.5 0. 0. 0. 0. 1. 1

*this section contains the heat structures for the

*vessel upper head.

•components defined in this section:-

•heat structure geometries: 3650,3700,3800

•components referenced in this section:-

•pipes: 370

•snglvols: 363,365,380

•implementation:

•the structures defined are simply the tube walls.

•inlet pipe

•connects to component 365

13650000 2 5 2 1 0.010

13650100 0 1

13650101 4 0.013

13650201 5 4

13650301 0.0 4

13650401 571.5

•structure no. I

13650501 363010000 0 1 1 1.416 1

13650601 0 0 0 1 1.416 1

13650701 0 0.0 0.0 0.0 1

13650801 0.0 !.416 1.416 0. 0. 0. 0. 1. 1

*structure no. 2

• structure nO. I

13700501 370010000 0 1 1 .923 1

13700601 0 0 0 I .923 1

13700701 0 0.0 0.0 0.0 1

13700801 0.0 .923 .923 0. 0. 0. 0. 1. 1

•structure nO. 2

13700502 370020000 0 I 1 .855 2

13700602 0 0 0 1 .855 2

13700702 0 0.0 0.0 0.0 2

13700802 0.0 .855 .855 0. 0. 0. 0. 1. 2

• structure nO. 3

13700503 375010000 0 1. 1 .923 3

13700603 0 0 0 1 .923 3

13700703 0 0.0 0.0 0.0 3

13700803 0.0 .923 .923 0. 0. 0. 0. 1. 3

outlet pipe

* connects to component 380

13800000 1 5 2 1 0.010

13800100 0 1

13800101 4 0.013

13800201 5 4

13800301 0.0 4

13800401 571.5

13800501 380010000 0 1 1 1.504 1

13800601 0 0 0 1 1.504 1

13800701 0 0.0 0.0 0.0 1

13800801 0.0 1.504 1.504 0. 0. 0. 0. 1. 1

" this section contains the heat structures for the inlet

" and outlet piping & the inlet and outlet plena for both

" intact and broken loop steam generators.

" it does does include the u tubes or any of the secondary

* side heat structures.

components defined in this section:-

• heat structure geometries: 1200,1202,1204,1205

2100,2102,2104,2105

* components referenced in this section:-

* pipes: 120 210 530 630

• implementation:

• the 8 geometries defined cover the piping, plenum

• walls, dividing plate between the plena and the tube

• sheet for both loops, the plenum walls are arranged

• to have the correct internal surface area despite

* being the wrong shape. the wall thickness is adjusted

• to give the correct total mass.

* intact loop geometries

• inlet and outlet piping geometries

11200000 2 5 2 1 58.85d-3

11200100 0 1

13650502 365010000 0 1 1 3.169 2

13650602 0 0 0 1 3.169 2

13650702 0 0.0 0.0 0.0 2

13650802 0.0 3.169 3.169 0. 0. 0. 0. 1. 2

* upper head links to component 370

13700000 3 5 2 1 60.0d-3

13700100 0 1

13700101 4 80.Od-3

13700201 5 4

13700301 0.0 4

13700401 571.5

A7-33
11200101 4 70.6d-3

11200201 5 4

11200301 0.0 4

11200401 572.5

• structure nO. 1 and 2 dhss cylinder(s):- 96 and 101

* links to:- component 120

11200501 120010000 450000 1 1 1.734 2

11200601 0 0 0 1 1.734 2

11200701 0 0.0 0.0 0.0 2

11200801 0.0 1.734 1.734 0. 0. 0. 0. 1. 2

• plenum walls

11202000 2 5 2 1 156.0d-3

11202100 0 1

11202101 4 185.5d-3

11202201 5 4

11202301 0.0 4

11202401 571.5

structure nO. I and 2 dhss cylinder(s):- 97 and 99

* links to:- component 120

11202501 120020000 430000 1 1 .171 2

11202601 0 0 0 1 .171 2

11202701 0 0.0 0.0 0.0 2

11202801 0.0 .340 .340 0. 0. 0. 0. 1. 2

* tube plate

11204000 2 5 1 1 0.0

11204100 0 1

11204101 4 90.0d-3

11204201 5 4

11204301 0.0 4

11204401 590.0 1, 581.0 2, 572.0 3, 563.0 4, 554.0 5

* structure nO. I and 2 dhss rectangle(s):- 4 and 6

links to:- components 120 and 530

11204501 120020000 430000 1 0 40.2d-3 2

11204601 530010000 0 1 0 40.2d-3 2

11204701 0 0.0 0.0 0.0 2

11204801 0.0 .1000 .1000 0. 0. 0. 0. 1. 2

11204901 0.0 .1000 .1000 0. 0. 0. 0. 1. 2

• dividing plate

11205000 1 5 1 1 0.0

11205100 0 1

11205101 4 25.0d-3

11205201 5 4

11205301 0.0 4

11205401 572.5

• structure nO. I dhss rectangle(s):- 5

• links to:- component 120

11205501 120020000 0 1 0 963d-3 1

11205601 120430000 0 1 0 96.3d-3 1

11205701 0 0.0 0.0 0.0 1

11205801 0.0 .340 .340 0. 0. 0. 0. 1. 1

11205901 0.0 .340 .340 0. 0. 0. 0. 1. 1

• broken loop geometries

• inlet and outlet piping geometries

12100000 2 5 2 1 34.15d-3

12100100 0 1

12100101 4 41.75d-3

12100201 5 4

12100301 0.0 4

12100401 572.5

* structure nO. I and 2 dhss cylinder(s):- 102 and 106

• links to:- component 210

12100501 210010000 250000 1 1 1.909 2

12100601 0 0 0 1 1.909 2

12100701 0 0.0 0.0 0.0 2

12100801 0.0 1.909 1.909 0. 0. 0. 0. 1. 2

• plenum walls

12102000 2 5 2 1 102.0d-3

12102100 0 1

12102101 4 121.35d-3

12102201 5 4

12102301 0.0 4

12102401 572.5

* structure nO. I and 2 dhss cylinder(s):- 97 and 99

'links to:- component 210

12102501 210020000 230000 1 1 .107 2

12102601 0 0 0 1 .107 2

12102701 0 0.0 0.0 0.0 2

12102801 0.0 .214 .214 0. 0. 0. 0. 1. 2

tube plate

12104000 2 5 1 1 0.0

12104100 0 1

12104101 4 60.0d-3

12104201 5 4

12104301 0.0 4

12104401 590.0 1,581.0 2, 572.0 3, 563.0 4, 554.0 5

* structure nO. I and 2 dhss rectangle(s):- 4 and 6

• links to:- components 210 and 650

12104501 210020000 230000 1 0 19.4d-3 2

12104601 630010000 0 1 0 19.4d-3 2

12104701 0 0.0 0.0 0.0 2

12104801 0.0 .1000 .1000 0. 0. 0. 0. 1. 2

12104901 0.0 .1000 .1000 0. 0. 0. 0. 1. 2

* dividing plate

12105000 1 5 1 1 0.0

12105100 0 1

12105101 4 20.0d-3

12105201 5 4

12105301 0.0 4

12105401 572.5

• structure nO. I dhss rectangle(s):- 5

• links to:- component210

20

12105501 210020000 0 1 0 39.2d-3 1

12105601 210250000 0 1 0 39.2d-3 I

A7-34
12105701 0 0.0 0.0 0.0 1

12105801 0.0 .214 .214 0. 0. 0. 0. 1. 1

12105901 0.0 .214 .214 0. 0. 0. 0. 1. 1

" this section contains the heat structures for

" the two pumps not included in the loop piping.

" the inlet and outlet parts of the pumps, and both

" flanges are incorporated in the loop piping on either

* side of the pumps.

* components defined in this section:-

• heat structure geometries:- 1370,2300

* components referenced in this section:-

* components defined in this section:-

Scntrlvar :- 135,136,137 225,226,227

* 138,139 228,229

* tmdpvol :- 136 226

* tmdpjun :- 134 224

* components referenced in this section:-

* branch :133

* pump : 135

223

225

* branches:-

* implementation:-

137,230

• the heat slabs model the metalwork around the pump

* bowl plus the cooling due to the pump cooling water

" which flows in a jacket at the top of the pump body.

* the modelling is fairly crude, and only roughly

• represents the complex conduction paths through

* the pump by using spherical goemetry to account

• in part for the 3d effects.

* the heat slabs have to be linked to the branches

* downstream of the pumps because the program does

* not allow heat slabs on pump volumes.

* the seal flow for the pump is modelled separately

* in the next section.

* intact loop pump links to component 137

• implementation:-

* the seal flow is modelled as a flow from a time

dependent

* volume through a time dependent junction. the flow rate

• is a tabulated function of pressure difference between

* the seal water and primary loop fluid, and the

temperature

* of the seal water is adjusted to allow for heating up

* effects before it contacts the primary fluid. the heat-up

* is a function of pump speed and system fluid

temperature.

* the term representing conduction from primary fluid as

* 5 * fluid temp in pump volume has been removed for

* both pumps

• note:

* the supply pressure fur the sealwater is assumed fixed

* at 194 bar for this model, this corresponds to the present

* system used during the new small break test program.

* if the pressure is controlled manually during any test

* then a table of time versus seal injection pressure

* should be included.

• intact loop:

* calculate pressure difference

20513500 seal.dp sum l.Oe-5 0.0 1

20513501 0.0 1.0 p 136010000 -1.0 p 135010000

" set up table of flow versus pressure difference

* table values based on measured flow vs press.diff

0

1340000 sealflow tmdpjun

1340101 136000000 138000000 3.0d-4

1340200 1 0 cntrlvar 135

1340201 0.0 .Old-3 0.0 0.0

1340202 30.0 12.1d-3 0.0 0.0

1340203 60.0 13.7d-3 0.0 0.0

1340204 65.0 15.1d-3 0.0 0.0

1340205 72.5 16.2d-3 0.0 0.0

1340206 96.0 12.86-3 0.0 0.0

1340207 120.0 12.8d-3 0.0 0.0

1340208 145.0 11.2d-3 0.0 0.0

1340209 165.0 8.8d-3 0.0 0.0

1340210 166.0 9.6d-3 0.0 0.0

1340211 180.0 8.Od-3 0.0 0.0

1340212 200.0 6.0d-3 0.0 0.0 *

* define the dependence between seal water

" temperature, pump speed and system temperature

20502500 ilpvelab stdfnctn 1.0 468.4 0

20502501 abs pmpvel 135

11370000

11370100

11370101

11370201

11370301

11370401

11370501

11370601

11370701

11370801

1 5 3 1 100.0d-3

0 1

4 160.0d-3

5 4

0.0 4

565.0 1,479.02,408.03,349.04,298.05

137010000 0 1 1 1.0 1

-2 0 31071 1.0 1

0 0.0 0.0 0.0 1

0.0 300.0d-3 300.0d-3 0. 0. 0. 0. 1. 1

* broken loop pump links to component 230

12300000 1 5 3 1 l00.Od-3

12300100 0 1

12300101 4 160.0d-3

12300201 5 4

12300301 0.0 4

12300401 565.0 1,479.02,408.03,349.04,298.05

12300501 230010000 0 1 1 1.0 1

12300601 -2 0 3207 1 1.0 1

12300701 0 0.0 0.0 0.0 1

12300801 0.0 300.0d-3 300.0d-3 0. 0. 0. 0. 1. 1 *•0aaa.*****••0.•*•••***•••***•********•*.8.a****•

* this section contains the pump seal flow model

* for both the intact and broken loop pumps

A7-35
20513600 sealfric powerr 8.5d-5 0.0 1

20513601 cntrlvar 025 2.65

20513700 energyin sum 1.0 0.0 1

20513701 0.0 * not used * conversion to centigrade

20513702 4.4 cntdrvar 025

20513703 1.0 cntrlvar 136

20513800 temprise div 0.24e-3 50.0 0

20513801 mflowj 134000000 cntrlvar 137

20513900 sealtemp sum 1.0 0.0 1 3 0.0 300.0

20513901 25.0 $ seal water inlet temperature

20513902 1.e-9 cntrlvar 138

* now define the time dependent volume for seal water

2260202 330.0 194.0d5 603.0

20576000 pmpsealt sum 1.0 0.0 1

20576001 0.0025 1.0 mflowj 134000000

20576002 1.0 mflowj 224000000

a heat loss heat transfer

1360000

1360101

1360102

1360200

1360201

1360202

sealwatr tndpvol

1.0 1.0 0.0 0.0 0.0 0.0

2.3d-5 0.0 00

3 0 cntrlvar 139

1.0 194.0d0 274.0 *conversion to kelvin

330.0 194.0d5 603.0

* broken loop:

• calculate pressure difference

20522500 seal.dp sum I.Oe-5 0.0 1

20522501 0.0 1.0 p 226010000 -1.0 p 225010000

* set up table of flow versus pressure difference

a table values based on measured flow vs press.diff

2240000 sealflow tmdpjun

2240101 226000000 228000000

2240200 1 0 cntrlvar 225

2240201 0.0 .Old-3 0.0 0.0

2240202 30.0 6.8d-3 0.0 0.0

2240203 72.0 10.6d-3 0.0 0.0

2240204 84.0 10.4d-3 0.0 0.0

2240205 94.0 10.8d-3 0.0 0.0

2240206 113.0 9.8d-3 0.0 0.0

2240207 114.0 9.0d-3 0.0 0.0

2240208 120.0 8.8d-3 0.0 0.0

2240209 165.0 5.7d-3 0.0 0.0

2240210 166.0 6.6d-3 0.0 0.0

2240211 175.0 5.6d-3 0.0 0.0

2240212 176.0 5.6d-3 0.0 0.0

2240213 200.0 4.5d-3 0.0 0.0

3.0d-4

• contents of this section:-

* this section contains tables for heat transfer coef-

* ficients and for ambient temperature and cooling waa ter temperature as needed for the modelling of the

a the heat losses from the insulated parts and from

* the instrument cooling.

• tables defined in this section:-

a tables: ht-coefficients for:

*101 to 107 intact loop

a 201 to 207 broken loop

* 301 to 306 vessel

* 401 pressurizer

a 501 intact loop steam generator secondary side

a 601 broken loop steam generator secondary side

* tables: anticipated temperatures for:

* 001 the ambient

• 002 the cooling water

• components referenced by this section:-

none

a implementation:-

a the heat losses found in the heat loss experia ments hl-I and hi-2, form the basis for the

a following tables of heat transfer coefficients.

for all cylindrical heat structures the heat

* loss heat transfer coefficient is found as:

* h - 1/((tin-tac)Iq+roulk*ln(rinirou))

* define the dependence between seal water

temperature, pump speed and system temperature

20502600 blpvelab stdflctn 1.0 332.240

20502601 abs pmpvel 225

20522600 sealfric powerr 8.5d-5 0.0 1

20522601 cntrivar 026 2.65

20522700 energyin sum 1.0 0.0 1

20522701 0.0 * not sed * conversion to centigrade

20522702 4.4 cntrlvar 026

20522703 1.0 cntrivar 226

20522800 temprise div .24e-3 50.0 0

20522801 mflowj 224000000 cntrlvar 227

20522900 sealtemp sum 1.0 0.0 1 3 0.0 300.0

20522901 25.0 * seal water inlet temperature

20522902 1.d-9 cntrlvar 228

* now define the time dependent volume for seal water

a

a

a

a

a

a

a

a

where: h - heat transfer coefficient

tin - inner wall temperature

tac = ambient or cooling water temperature

q - heat loss heat flux (- heatflow/area)

rou - outer tube radius

rin - inner tube radius

k = wall heat conduction coefficient

a table of ambient temperature vs time (25 c assumed)

20200100 temp

20200101 0.0 -298.15

a table of cooling water temperature vs time (15 c)

20200200 temp

20200201 0.0 288.15 ,

a intact loop

a referenced by heat structure 1000001

2260000

2260101

2260102

2260200

2260201

sealwatr tmdpvol

1.0 1.0 0.0 0.0 0.0 0.0

2.3d-5 0.0 00

3 0 cntrvar 229

1.0 194.0d5 274.0 *conversion to kelvin

A7-36
20210100 htc-t

20210101 0.0 81.147

* referenced by heat structure 1000002

20210200 htc-t

20210201 0.0 37.358 s

* referenced by heat structure 1000003

20210300 htc-t

20210301 0.0 56.87

* referenced by heat structure 1000004

20210400 htc-t

20210401 0.0 89.128

* referenced by heat structure 1000005

20210500 htc-t

20210501 0.0 29.044

* referenced by heat structure 1000006

20210600 htc-t

20210601 0.0 80.26

* referenced by heat structure 1370001

20210700 htc-t

20210701 0.0 85.69 ,

* broken loop

* referenced by heat structure 2000001

20220100 htc-t

20220101 0.0 88.01

* referenced by heat structure 2000002

20220200 .htc-t

20220201 0.0 83.369

* referenced by heat structure 2000003

20220300 htc-t

20220301 0.0 45.7

* referenced by heat structure 2000004

20220400 htc-t

20220401 0.0 54.9

* referenced by heat structure 2000005

20220500 htc-t

20220501 0.0 24.7

* referenced by heat structure 2000006

20220600 htc-t

20220601 0.0 92.47

* referenced by heat structure 2300001 & 2000001

20220700 htc-t

20220701 0.0 156.66

referenced by heat structure 2001001 & 2001002

* insulated pipework in bunker, htIoss set to zero

20220800 htc-t

20220801 0.0 0.0

* vessel

* insulated parts

* referenced by heat structures 3100001-014

20230100 htc-t

20230101 0.0 0.75

* stub pipes * refecveed by heat structures 3105001-012

20230200 htc-t

20230201 0.0 6.0

* supports

* referenced by heat structures 3106001-002

20230300 htc-t

20230301 0.0 4.06

* upper flange

* referenced by heat structure 3107001

20230400 htc-t

20230401 0.0 39.93

* lower flange and power connector

* referenced by heat structure 3107002

20230500 htc-t

20230501 0. 117.97

* upper mounting plate

* referenced by heat structure 3550001

20230600 htc-t

20230601 0.0 1311.54

* pressurizer

* referenced by structures 4100002-009

20240100 htc-t

20240101 0.0 1.61

* referenced by structures 4100001

20240200 htc-t

20240201 0.0 1.61

* steam generator secondary sides

* intact loop

20250100 htc-t

20250101 0.0 1.956

* referenced by heat structures 5601001, 5602001

* heat loss in steam dome slightly higher

20250300 htc-t

20250301 0.0 2.25

* broken loop

* referenced by heat structures 6101001.004,

* 6551001 and 6601001-002

20260100 htc-t

20260101 0.0 2.246

* referenced by heat structures 6601001

* heat loss in steam dome slightly higher

20260300 htc-t

20260301 0.0 2.568

* steam lines

* referenced by heat structures 5641001,

* and 6641001

20260200 htc-t

20260201. 0.0 5.1

********1.************.*1*

A7-37
S

*

heat structure thermal property data 0

* ni 201 - thermal conductivity

20100401 293.0 79.2

20100100 thl/fctn 1

20100200 thl/fctn 1

20100300 tbl/fctn 1

20100400 thl/fctn 1

20100500 thl/fctn 1

20100600 tbl/fctn 1

20100700 tbl/fctn 1

20100800 tbllfctn 1

20100900 tbl/fctn 1

20101000 tbl/fctn 1

20102000 tbl/fctn 1

20102100 'c-steel'0

20102200 tbl/fctn 1

I

I

1

1

1

1

0

1

*inconel 625

*inconel 718

* 1.4948

*'i 201

* 1.4571

*al2o3

*incoloy 800

*60/aino718+40%ni201.

*crud layer (fe3 o4)

*rockwool insulation

*copper

*mild steel for y-beam *psuedo matd. for gap

20100402 533.0

20100403 813.0

20100404 1088.0

61.9

59.0

64.8

*inconel 625 - thermal conductivity

20100101 293.0 10.01

20100102 473.0 12.5

20100103 573.0 13.9

20100104 673.0 15.3

'inconel 625 - volumetric heat capacity

20100151 293.0 3.460e6

20100152 373.0 3.671e6

20100153 473.0 3.866e6

20100154 573.0 4.051e6

20100155 673.0 4.262e6

'inconel 718 -thermal conductivity

20100201 293.0 11.1

20100202 373.0 12.4

20100203 473.0 14.0

20100204 573.0 15.7

20100205 2273. 44.0

'inconel 718 - volumetric heat capacity

20100251 293.0 3.522e6

20100252 1366.0 3.522e6

'1.4948 - thermal conductivity

20100301 293.0 16.9

20100302 300.0 17.0

20100303 400.0 18.3

20100304 500.0 18.9

20100305 600.0 20.1

20100306 700.0 21.2

20100307 800.0 22.4

20100308 900.0 23.5

20100309 1000.0 24.7

20100310 1050.0 25.3

* 1.4948 - volumetric heat capacity

20100351 293.0 3.966e6

20100352 300.0 3.988e6

20100353 400.0 4.125c6

20100354 500.0 4.261e6.

20100355 600.0 4.401e6

20100356 700.0 4.535e6

20100357 800.0 4.669e6

20100358 900.0 4.792e6

20100359 1000.0 4.968e6

20100360 1050.0 5.066e6

'ni 201 - volumetric heat capacity

20100451 293.0 4.0425e6

20100452 1366.0 4.0425e6

'1.4571 - thermal conductivity

20100501 293.0 14.0

20100502 400.0 15.5

20100503 600.0 18.3

20100504 800.0 21.0

20100505 1000.0 23.7

*1.4571 - volumetric heat capacity

20100551 293.0 3.578e6

20100552 400.0 3.762e6

20100553 600.0 4.090e6

20100554 800.0 4.363e6

20100555 1000.0 4.615e6

* al2o3 - thermal conductivity

20100601 293.0 41.9

20100602 373.0 35.6

20100603 773.0 12.6

20100604 1073.0 8.4

'al2o3 - volumetric heat capacity

20100651 293.0 4.0425d+6

20100652 1073.0 4.0425d+6

*incoloy 800 - thermal conductivity

20100701 294.0 11.5

20100702 533.0 15.7

20100703 811.0 20.1

20100704 1089.0 25.1

'incoloy 800 - volumetric heat capacity

20100751 294.0 4.1746

20100752 1366.0 4.174e6

S60% inconel 718 + 40% ni201 - thermal conductivity

20100801 293.0

20100802 373.0

20100803 473.0

20100804 533.0

20100805 573.0

20100806 813.0

20100807 1088.0

38.5

36.9

35.0

33.8

34.1

33.5

40.6

'60% inconel 718 + 40% ni201 - volumetric heat capacity

20100851 293.0 3.736d6

20100852 1366.0 3.736d6

'crud layer (magnetite fe3o4) - thermal conductivity

20100901 1.5

A7-38
• crud layer - volumetric heat capacity

20100951 2.366e6

Srockwool insulation - thermal conductivity

20101001 273.0 0.04

20101002 373.0 0.05

20101003 573.0 0.05

20101004 873.0 0.15

• rockwool insulation -volumetric heat capacity

20101051 1.34c5

* copper - thermal conductivity

20102001 386.0

* copper - volumetric heat capacity

20102051 3.43e6 $

* gap psuedo marl. - thermal conductivity

20102201 293.0 3.06

20102202 400.0 3.55

20102203 600.0 4.80

20102204 800.0 6.65

20102205 1000.0 9.33

• gap psuedo heat capacity

20102251 293.0 .783e6

20102252 400.0 .860e6

20102253 600.0 1.072c6

20102254 800.0 1.380e6

20102255 1000.0 1.818e6 a** ** *****   ** **   ** * ** ********* ****** **   ** *

20210022 1969.2 98.9

20210023 2970.1 92.9

20210024 3967.5 85.9

20210025 4969.2 79.0

20210026 5969.2 72.9

20210027 6826.2 71.9

* rpv stub-pipe cooling to enhance condensation in the *

* vessel downcomer annulus.

20231000 power 522 1.0 -0.0012d+6

20231001 -1.0 1.0

20231002 0.0 1.0

20231003 50000.0 1.0 ************* **   ** ** ***   ** **** *** *** *****

" pressuriser heating power control system - 2 kw max *

• power on during steady-state to maintain saturation. *

* zero power applied during trip off period & transient

20240000 power 509 1.0 2.ld+3

20240001 -1.0 0.0

20240002 -0.01 0.0

20240003 0.0 0.0

20240004 0.1 0.05

20240005 1.0 0.05

20240006 1.01 0.10

20240007 2.0 0.10

20240008 2.01 0.25

20240009 3.0 0.25

20240010 3.01 0.50

20240011 4.0 0.50

20240012 4.01 0.75

20240013 5.0 0.75

20240014 5.01 1.00

20240015 20000.0 1.00

• pressure-temperature curve used for warm-up transients

20240300 htc-temp * pressure-temperature curve

20240301 300.0 50.Md5

20240302 423.0 55.0d5

20240303 473.0 65.0dS

20240304 538.0 100.Od0

20240305 548.0 158.0d0

20240306 1000.0 158.0dS

" argus ball valve opening characteristics. *

* normalised stem position against normalised free area.

* based on idel'chik spherical ball-valve data

20215000 nom

20215001 0.0000 0.00

20215002 0.2556 0.05

20215003 0.3889 0.11

20215004 0.4444 0.19

20215005 0.5000 0.27

20215006 0.5556 0.35

20215007 0.6111 0.44

20215008 0.6667 0.52

20215009 0.7222 0.60

20215010 0.7778 0.69

20215011 0.8333 0.77

20215012 0.8889 0.85

20215013 0.9444 0.93

S

S

general tables

" electrical power control curve *

" as specified by mr.seeberger, siemens/kwu report r212 *

" dated 9.01.90 and modified on 25.01.90 atjrc ispra *

20210000 power 512 1. l.e3

20210001 0.00 5307.9

20210002 3.8 4249.9

20210003 11.0 1651.0

20210004 18.1 748.9

20210005 25.2 561.9

20210006 32.6 417.9

20210007 39.7 346.9

2021000846.9 310.9

20210009 54.2 288.9

20210010 61.3 266.9

2021001175.6 241.0

20210012 97.2 221.9

20210013 118.9 205.9

20210014 140.5 197.9

20210015 169.3 187.9

20210016 270.1 158.9

20210017 320.5 150.9

20210018414.2 139.9

20210019 515.0 135.9

20210020 867.7 123.0

20210021 1346.2 109.9

A7-39
20215014 1.0000 1.00

* control systems *

* control variable functions for control & regulation *

* & additional output variables *

* total core power

* electrical heater rod bundle *

20501000 topower sum 1.0 0.0 1

20501001 0.0 0.35396 htmr 325100101

20501002 0.43228 htmr 334100101

20501003 0.89050 htmr 335100101

20501004 1.43300 htrnr 335200101

20501005 1.8912 ht'nr 335300101

20501006 1.8912 htur 335300201

20501007 1.4330 htrn 335500101

20501008 0.89050 htmr 335600101

20501009 0.70894 htmr 336600101

20501010 1.2968 htrnr 345100101

20501011 1.2968 htmr 345100201

20501012 1.0526 htrnr 345100301

20501013 0.68085 htmr 345100401

20501014 0.031362 htrnr 355000100

* pressurizer heating power controller *

* heating power is applied in steps to ensure water in

* pressurizer remains at saturation during steady-state.

* a time-dependent volume with constant pressure used to

* initialize primary system pressure during steady-state.

* tables referenced:

* 400 heating power increments

403 required pressure at given temperature

20541500 reqdpres function 1.0 0.0 1

20541501 tempf 350010000 403

20541600 tempgprz sum 1.0 0.0 1

20541601 0.0 1.0 tempg 409010000

20541700 tempfprz sum 1.0 0.0 1

20541701 0.1 1.0 tempf 410070000

20582100

20582101

20582200

20582201

20582300

20582301

20582302

prizOl sum 0.05 0.0 1

159.0d5 -1.0 p 350010000

priz02 mult 1.0 0.0 1

cntrlvar 001 cntrlvar 821

prizO3 sum 1.0 157.56d5 0 1 150.0d5

0.0 1.0 p 430010000

1.0 cntrlvar 822

* mass inventory *

* mass intact loop without pressurizer *

20510800 massill sum 1.0 0.0 1

205108010.0 3.13978d-3 rho 100010000

20510802 3.17817d-3 rho 105010000

20510803 6.82560d-3 rho 110010000

20510804 2.67905d-3 rho 110020000

20510805 1.928017d-2 rho 120010000

20510806 9.93200d-3 rho 120020000

20510807 1.0681d-3 rho 120030000

20510808 1.0681d-3 rho 120040000

20510809 1.0681d-3 rho 120050000

20510810 1.0681d-3 rho 120060000

20510811 9.05d-4 rho 120070000

20510812 9.05d-4 rho 120080000

20510813 9.05d-4 rho 120090000

20510814 9.05d-4 rho 120100000

20510815 1.81d-3 rho 120110000

20510816 1.Sld-3 rho 120120000

20510817 1.81d-3 rho 120130000

20510818 1.8ld-3 rho 120140000

20510819 3.62d-3 rho 120150000

20510820 3.62d-3 rho 120160000

20510700 massil2 sum 1.0 0.0 1

20510701 0.0 3.62d-3 rho 120170000

20510702 3.62d-3 rho 120180000

20510703 3.62d-3 rho 120190000

20510704 3.62d-3 rho 120200000

20510705 3.62d-3 rho 120210000

20510706 3.62d-3 rho 120220000

20510707 7.348d-3 rho 120230000

20510708 7.348d-3 rho 120240000

20510709 3.62d-3 rho 120250000

20510710 3.62d-3 rho 120260000

20510711 3.62d-3 rho 120270000

20510712 3.62d-3 rho 120280000

20510713 3.62d-3 rho 120290000

20510714 3.62d-3 rho 120300000

20510715 3.62d-3 rho 120310000

20510716 3.62d-3 rho 120320000

20510717 1.81d-3 rho 120330000

20510718 1.81d-3 rho 120340000

20510719 1.81d-3 rho 120350000

20510720 1.81d-3 rho 120360000

20510600 massil3 sum 1.0 0.0 1

20510601 0.0 9.05d-4 rho 120370000

20510602 9.05d-4 rho 120380000

20510603 9.05d-4 rho 120390000

20510604 9.05d-4 rho 120400000

20510605 1.0681d-3 rho 120410000

20510606 1.0681d-3 rho 120420000

20510607 1.0681d-3 rho 120430000

20510608 1.0681d-3 rho 120440000

20510609 1.928017d-2 rho 120460000

20510610 9.93200d-3 rho 120450000

20542000 pr.htrpw sum 1.0

20542001 0.0 0.26966 htrr

20542002 0.22863 htrn

20542003 0.35173 htrnr

20542004 0.35173 hrnr"

20542005 0.35173 htmr

0.0 1

410000900

410000800

410000700

410000600

410000500

* determination of time step size S

20500100 dt sum

20500101 0.0 1.0

20500102 -1.0

1.0 1.Od-6 1

time 0

cntrivar 002

20500200 time

20500201 0.0

sum 1.0 0.0 1

1.0 time 0

* pressurizer pressure control

A7-40
i ý F, ,

20510900 massil2 sum 1.0 0.0 1

20510901 0.0 439398d-3 rho 130010000

20510902 3.28055d-3 rho 130020000

20510903 6.87253d-3 rho 130030000

20510904 2.66625d-3 rho 130040000

20510905 6.87253d-3 rho 130050000

20510906 3.28055d-3 rho 133010000

20510907 1.99994d-3 rho 135010000

20510908 3.15257d-3 rho 137010000

20510909 4.95709d-3 rho 140010000

20510910 4.95709d-3 rho 140020000

20510911 3.58771d-3 rho 145010000

20511000massil sum 1.0 0.0 1

20511001 0.0 1.0 cntrlvar 108

20511002 1.0 cntrlvar 109

20511003 1.0 entrlvar 106

20511004 1.0 cntrlvar 107

aaaa*a*a******************************************

$a*.

* mass pressurizer * a***aaaaa*aa*aa*aa**aaaaaaa************aaa*aaa****

20540000 masspr sum 1.0 0.0 1

20540001 0.0 1.03270d-2 rho 409010000

20540002 1.09197d-2 rho 410010000

20540003 1.09386d-2 rho 410020000

20540004 1.09386d-2 rho 410030000

20540005 1.09386d-2 rho 410040000

20540006 1.09386d-2 rho 410050000

20540007 1.09386d-2 rho 410060000

20540008 4.66362d-3 rho 410070000

20540009 6.36337d-3 rho 420010000

20540010 2.36751d-4 rho 400010000 * il

20540011 3.55810d-4 rho 400020000 * hot

20540012 3.83180d-4 rho 400030000 * leg

* mass broken loop **.a*****a**********aaa**aaa*a********************

20520700 massbll sum 1.0 0.0 1

20520701 0.0 1.25016d-3 rho 200010000

20520702 1.44380d-3 rho 203010000

20520703 1.11164d-3 rho 206010000

20520704 1.11 164d-3 rho 206020000

20520705 1.14500d-3 rho 206030000

20520800 massbl3 sum 1.0 0.0 1

20520801 0.0 6.922758d-3 rho 210010000

20520802 2.700930d-3 rho 210020000

20520803 6.75864d-4 rho 210030000

20520804 6.75864d-4 rho 210040000

20520805 6.0345d-4 rho 210050000

20520806 6.0345d-4 rho 210060000

20520807 12.069d-4 rho 210070000

20520808 12.069d-4 rho 210080000

20520809 24.138d-4 rho 210090000

20520810 24.138d-4 rho 210100000

20520811 24.139d-4 rho 210110000

20520812 24.138d-4 rho 210120000

20520813 24.43542d-4 rho 210130000

20520814 24.43542d-4 rho 210140000

20520815 2.700930d-3 rho 210250000

20520816 6.922758d-3 rho 210260000

20520817 24.138d-4 rho 210150000

20520818 24.138d-4 rho 210160000

20520819 24.138d-4 rho 210170000

20520820 24.138d-4 rho 210180000

20520600 massbD3 sum 1.0 0.0 1

20520601 0.0

20520602

20520603

20520604

20520605

20520606

12.069d-4 rho 210190000

12.069d-4 rho 210200000

6.0345d-4 rho 210210000

6.0345d-4 rho 210220000

6.75864d-4 rho 210230000

6.75864d-4 rho 210240000

20520900 massbl2 sum 1.0 0.0 1

20520901 0.0 1.73920d-3 rho 220010000

20520902 1.92447d-3 rho 220020000

20520903 1.23680d-3 rho 220030000

20520904 1.22178d-3 rho 220040000

20520905 1.23680d-3 rho 220050000

20520906 1.92447d-3 rho 223010000

20520907 2.00093d-3 rho 225010000

20520908 1.43543d-3 rho 230010000

20520909 2.10812d-3 rho 240010000

20520910 1.51891d-3 rho 250010000

20520911 1.17507d-3 rho 260010000

20521000 massbl sum 1.0 0.0 i

20521001 0.0 1.0 cntrlvar 208

20521002 1.0 cntrivar 209

20521003 1.0 cnutvar 207

20521004 1.0 cntrivar 206

a mass pressure vessel

aa***a *****a **aa*** aa** a a**a ***************a****** *a 

20531800 massvesl sum 1.0 0.0 1

20531801 0.0 3.5627d-3 rho 300010000

20531802 5.50797d-3 rho 305010000

20531803 6.78600d-3 rho 310010000

20531804 6.78600d-3 rho 310020000

20531805 8.36940d-3 rho 310030000

20531806 7.49853d-3 rho 310040000

20531807 9.89625d-3 rho 310050000

20531808 9.89625d-3 rho 310060000

20531809 7.49853d-3 rho 310070000

20531810 6.92172d-3 rho 310080000

20531811 4.41090d-3 rho 310090000

20531812 6.96696d-3 rho 310100000

20531813 1.33794d-2 rho 315010000

20531814 1.33794d-2 rho 320010000

20531815 1.48166d-2 rho 325010000

20531816 8.98131d-3 rho 325020000 a

20531900 massves2 sum 1.0 0.0 1

20531901 0.0 4.96650d-3 rho 335010000

20531902 5.38038d-3 rho 335020000

20531903 7.10080d-3 rho 335030000

20531904 7.100804-3 rho 335040000

20531905 5.38038d-3 rho 335050000

20531906 4.9665d-3 rho 335060000

20531907 1.49892d-2 rho 345010000

20531908 1.49892d-2 rho 345020000

20531909 1.21662d-2 rho 350010000

20531910 7.86933d-3 rho 355010000

20531911 4.44851d-4 rho 363010000

20531912 9.95573d-4 rho 365010000

20531913 9.67005d-3 rho 370010000

20531914 9.67005d-3 rho 370020000

20531915 9.67005d-3 rho 375010000

20531916 4.44851d-4 rho 380010000

20532000 massves sum 1.0 0.0 1

20532001 0.0 1.0 cntrivar 318

20532002 1.0 cntrlvar 319

* total mass primary system -without accumulators

A7-41
20599900 massprsy sum 1.0 0.0 1

20599901 0.0 1.0 cntrivar 110

20599902 1.0 cntrlvar 210

20599903 1.0 cntrlvar 320

20599904 1.0 cntrlvar 400

* sgl - secondary side *

20550000 masssgl sum 1.0 0.0 1

20550001 0.0 1.67552d-2 rho 500010000

20550002 5.9755d-3 rho 510010000

20550003 5.9755d-3 rho 510020000

20550004 5.97550d-3 rho 510030000

20550005 5.97550d-3 rho 510040000

20550006 5.97550d-3 rho 510050000

20550007 5.97550d-3 rho 510060000

20550008 5.97550d-3 rho 510070000

20550009 5.97550d-3 rho 510080000

20550010 2.9877d-3 rho 510090000

20550011 2.9877d-3 rho 510100000

20550012 2.9877d-3 rho 510110000

20550013 2.9877d-3 rho 510120000

20550014 1.4939d-3 rho 510130000

20550015 1.4939d-3 rho 510140000

20550016 IA939d-3 rho 510150000

20550017 1A939d-3 rho 510160000

20550018 1.4939d-3 rho 510170000

20550019 1.4939d-3 rho 510180000

20550020 1.4939d-3 rho 510190000

20550200 masssgl I sum 1.0 0.0 1

20550201 0.0 1.4939d-3 rho 510200000

20550202 3.7381d-3 rho 530010000

20550203 3.7381d-3 rho 530020000

20550204 3.7381d-3 rho 530030000

20550205 3.7381d-3 rho 530040000

20550206 3.7381d-3 rho 530050000

20550207 3.7381d-3 rho 530060000

20550208 3.7381d-3 rho 530070000

20550209 3.7381d-3 rho 530080000

20550210 7.4763d-3 rho 530090000

20550211 7.4763d-3 rho 530100000

20550212 7.4763d-3 rho 530110000

20550213 7.4763d-3 rho 530120000

20550214 14.953d-3 rho 530130000

20550215 14.953d-3 rho 530140000

20550216 14.953d-3 rho 530150000

20550217 14.953d-3 rho 530160000

20550218 14.953d-3 rho 530170000

20550219 14.953M-3 rho 530180000

20550220 14.953d-3 rho 530190000

20550300 massgl2 sum 1.0 0.0 1

20550301 0.0 14.953d-3 rho 530200000

20550302 61.8484d-2 rho 545010000

20550303 3.47660d-2 rho 550010000

20550304 1.856d-1 rho 552010000

20550305 1.17530d-1 rho 555010000

20550306 1.016d-I rho 560010000

20550307 2.42320d-2 rho 564010000 a

20550400 massglT sum 1.0 0.0 1

20550401 0.0 1.0 cntrlvar 500

20550402 1.0 cntrlvar 502

20550403 1.0 cntrlvar 503

20560000 masssg2 sum 1.0 0.0 1

20560001 0.0 5.16175d-3 rho 600010000

20560002 3.95840d-3 rho 610010000

20560003 3.95840d-3 rho 610020000

20560004 3.95840d-3 rho 610030000

20560005 3.95840d-3 rho 610040000

20560006 1.97920d-3 rho 610050000

20560007 1.97920d-3 rho 610060000

20560008 0.9896d-3 rho 610070000

20560009 0.9896d-3 rho 610080000

20560010 0.9896d-3 rho 610090000

20560011 0.9896d-3 rho 610100000

20560012 2.3737d-3 rho 630010000

20560013 2.3737d-3 rho 630020000

20560014 2.3737d-3 rho 630030000

20560015 2.3737d-3 rho 630040000

20560016 4.74735d-3 rho 630050000

20560017 4.74735d-3 rho 630060000

20560018 9.49470d-3 rho 630070000

20560019 9.49470d-3 rho 630080000

20560020 9.49470d-3 rho 630090000

20560200 masssg2l sum 1.0 0.0 1

20560201 0.0 9.49470d-3 rho 630100000

20560202 2.30638d-2 rho 645010000

20560203 1.23090d-2 rho 650010000

20560204 59.0520d-3 rho 652010000

20560205 3.78000d-2 rho 655010000

20560206 38.991d-3 rho 660010000

20560207 8.46220d-3 rho 664010000

20560300 masssg2T sum .1.0 0.0 1

20560301 0.0 1.0 cntrlvar 600

20560302 1.0 cntrlvar 602

* sgl + sg2: total secondary side inventory

20561000 masssgs sum 1.0 0.0 1

20561001 0.0 1.0 cntrlvar 504

20561002 1.0 cntrlvar 603

20561003 0.009 rho 565010000

* differential pressure values *

* taken between node centres only, not corrected 5**** a**e*a************a*a****aaa*****************

20510000 dpl6ll sum 1.0 0.0 1

20510001 0.0 1.0 p 145010000

20510002 -1.0 p 100010000

20510100 dp1213 sum 1.0 0.0 1

205101010.0 1.0 p 110020000

20510102 -1.0 p 130010000

20510 2 00dplS14 sum 1.0 0.0 1

205102010.0 1.0 p 137010000

20510202 -1.0 p 133010000

20510300 dp9217 sum 1.0 0.0 1

205103010.0 1.0 p 120460000

20510302 -1.0 p 130040000

20510400 dp1714 sum 1.0 0.0 1

20510401 0.0 1.0 p 130040000

20510402 -1.0 p 133010000

20510500 dp90bnx sum 1.0 0.0 1 * sg2 - seconadry side *t

A7-42
205105010.0 1.0 p 120030000

20510502 -1.0 p 120230000

20511100dp9092aa sum 1.0 0.0 1

205111010.0 1.0 p 120010000

20511102 -1.0 p 120460000

20520000 dp2621 sum 1.0 0.0 1

20520001 0.0 1.0 p 260010000

20520002 -1.0 p 200010000

20520100 dp2223 sum 1.0 0.0 1

20520101 0.0 1.0 p 206030000

20520102 -1.0 p 220010000

20520200 dp2524 sum 1.0 0.0 1

20520201 0.0 1.0 p 230010000

20520202 -1.0 p 223010000

20520300 dp8227 sum 1.0 0.0 1

20520301 0.0 1.0 p 210260000

20520302 -1.0 p 220040000

20520400 dp2724 sum 1.0 0.0 1

20520401 0.0 1.0 p 220040000

20520402 -1.0 p 223010000

20520500 dp80bnx sum 1.0 0.0 1

20520501 0.0 1.0 p 210030000

20520502 -1.0 p 210130000

20521300 dpSO82aa sum 1.0 0.0 1

20521301 0.0 1.0 p 210010000

20521302 -1.0 p 210260000

20521700 dp3d3rba sum 1.0 0.0 1

205217010.0 1.0 p 305010000

20521702 -1.0 p 350010000

20530000 dp1631 sum 1.0 0.0 1

20530001 0.0 1.0 p 145010000

20530002 -1.0 p 305010000

20530100 dp2631 sum 1.0 0.0 1

205301010.0 1.0 p 260010000

20530102 -1.0 p 305010000 s

20530200 dp3133 sum 1.0 0.0 1

20530201 0.0 1.0 p 305010000

20530202 -1.0 p 310100000 ,

20530300 dp3334 sum 1.0 0.0 1

205303010.0 1.0 p 310100000

20530302 -1.0 p 315010000

20530400 dp3436 sum 1.0 0.0 1

205304010.0 1.0 p 315010000

20530402 -1.0 p 325020000

20530500 dp3637 sum 1.0 0.0 1

20530501 0.0 1.0 p 325020000

20530502 -1.0 p 345010000

20530600 dp3738 sum 1.0 0.0 1

20530601 0.0 1.0 p 345010000

20530602 -1.0 p 350010000

20530700 dp3839 sum 1.0 0.0 1

20530701 0.0 1.0 p 350010000

20530702 -1.0 p 370010000

20530800dp3811 sum 1.0 0.0 1

20530801 0.0 1.0 p 350010000

20530802 -1.0 p 100010000

20530900 dp3821 sum 1.0 0.0 1

20530901 0.0 1.0 p 350010000

20530902 -1.0 p 200010000

20531000 dp3dbt sum 1.0 0.0 1

20531001 0.0 1.0 p 305010000

20531002 -1.0 p 310080000 ,

20531100 dp3rtk sum 1.0 0.0 1

20531101 0.0 1.0 p 335010000

20531102 -1.0 p 335060000

20531200 dp3rka sum 1.0 0.0 1

20531201 0.0 1.0 p 335060000

20531202 -1.0 p 350010000

20531300 dp3r39a sum 1.0 0.0 1

205313010.0 1.0 p 355010000

20531302 -1.0 p 370010000

• collapsed liquid level in pressuriser *aaa*a**a**a*aa**aaaa*aa*aa*a*aaaaaaaa******a*****

*•**

20541000 presslvl sum 1.0 0.0 1

20541001 0.0 0.898 voidf 409010000

20541002 0.9 voidf 410010000

20541003 0.9 voidf 410020000

20541004 0.9 voidf 410030000

20541005 0.9 voidf 410040000

20541006 0.9 voidf 410050000

20541007 0.9 voidf 410060000

20541008 0.585 voidf 410070000

20541009 0.79 voidf 420010000 *•*aa*••*•*****a**••**•**•*•*••••••*••*aa*••**•*•*

* pump speed controller - intact loop

• il mass flow controlled to 21.0 kg/s during ststate •

aaaaaa*a***aaa*aa*aa**a******.a*a*************aaaa*

**•*

* an error term is generated at each time-step, equal

* to the required mass flowrate minus the actual mass

* flowrate. this error, times a constant factor, plus *

* the integrated error, times a constant factor, are *

* added to the actual (old-time) pump speed to give

the corrected (new-time) pump speed. in successive

* time-steps, the pump speed is adjusted to give the *

required steady-state mass flowrate in each loop. a * this control remains active during the steady-state.

a the end-of-steady-state pump speed is then used a

* until pump trip occurs, when the pump-speed curve a

a is activated and coastdown occurs.when bi pump speed *

Sis zerO, a bh locked-rotor simulator valve Cpant'

a valve) Is activated after a 4 second delay.

" the pump speed function uses unit trips to switch a

a control between steady-state & transient operation. a

* normalised pump-speed curve is same for both pumps a

* referenced in table 135 after homologous curve data a

aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa

20512000 pOtripl tripunit 1.0 1.0 0

20512001 575

20512100 flowerl sum 1.0 0.0 1

A7-43
2051210121.0 -1.0 mflowj 135010000 S

20512200 interl integral 1.0 0.0 1

20512201 cntrlvar 121

20512400 flowerlt mulR 1.0 0.0 1

20512401 cntrlvar 120

20512402 cntrlvar 121

20512500 interlt mult 1.0 0.0 1

20512501 cntrlvar 120

20512502 cntrlvar 122

20512600 pspeedl sum 1.0 470.0 1

20512601 0.0 1.0 pmpvel 135

20512602 4.0 cntrlvar 124

20512603 0.3 cntrlvar 125

* pump speed table - intact loop pump *

*5****S*******i *&**********

* pump speed controller - broken loop pump *

* bl mass flow controlled to 7.00 kg/s during st.state

* speed control of bI pump is same as for il pump *

* referenced in table 135 after homologous curve data *

20521100 flower2 sum 1.0 0.0 1

20521101 7.20 -1.0 mflowj 225010000

20521200 inter2 integral 1.0 0.0 1

20521201 cntrivar 211

20521400 flower2t mult 1.0 0.0 1

20521401 cntrlvar 120

20521402 cntrlvar 211 *

20521500 inter2t mul 1.0 0.0 1

20521501 cntrlvar 120

20521502 cntrivar 212

1356100 522 cntrlvar 140

1356101 0.0 0.0

1356102 1000.0 1000.0

20512800 plripl tripunit 1.0 1.0

20512801 621

20512900 pltrip2 tripunit 1.0 0.0

20512901 641

20513000pltrpdly tripdlay 1.0 0.0

20513001 641

20513100 pltrptim sum 1.0 0.0

205131010.0 1.0 time 0

20513102 -1.0 cntrlvar 130 ,

20513200speedtl function 1.0 0.0

20513201 cntrlvar 131 135

20513300 pspeedll mul 1.0 0.0

20513301 cntrlvar 128

20513302 cntrlvar 126

20513400 pspeedl2 mult 1.0 0.0

20513401 cntrlvar 129

20513402 cntrlvar 144 ,

20514000 pspeedlf sum 1.0 0.0

205140010.0 1.0 cntrIvar 133

20514002 1.0 cntrlvar 134

20514100trantrpl tripunit 1.0 0.0

20514101 661

20514200 pmpddfl mull 1.0 0.0

20514201 cntlvar 141 pmpvel 135

20521600 pspeed2 sum 1.0 335.00 1

20521601 0.0 1.0 pmpvel 225

20521602 12.0 cntrlvar 214

20521603 1.0 cntrlvar 215

0

0

* pump speed table - broken loop pump

1

2256100 522 cntrlvar 240

2256101 0.0 0.0

2256102 1000.0 1000.0

I

I

1

20521800 p2tripl tripunit 1.0 1.0

20521801 622 S

20521900 p2trip2 tripunit 1.0 0.0

20521901 642 *

20522000 p2trpdly tripdlay 1.0 0.0

20522001 642

20522100 p2trptim sum 1.0 0.0

20522101 0.0 1.0 time 0

20522102 -1.0 cntrvar 220

20522200 speedt2 function 1.0 0.0

20522201 cntrlvar 221 135

S

20522300 pspeed2l mult 1.0 0.0

20522301 cntrlvar 218

20522302 cntrlvar 216

20522400 pspeed22 mull 1.0 0.0

20522401 cntrlvar 219

20522402 cntrlvar 244

20524000 pspeed2f sum 1.0 0.0

20524001 0.0 1.0 entrlvar 223

20524002 1.0 cntrlvar 224

20524200 pmpddf2 mult 1.0 0.0

20524201 cntrlvar 141 pmpvel 225

20524300 popstpl sum 1.0 0.0

20524301 0.0 1.0 cntrlvar 242

20524302 1.0 cntivar 243

0

0

0

20514300 pmpstpl sum 1.0 0.0 0

205143010.0 1.0 cntrlvar 142

20514302 1.0 cntrlvar 143

20514400 pmptml mult 1.0 0.0 0

20514401 cntrlvar 143 cntrlvar 132

A7-44
20524400 pmptm2 mult 1.0 0.0 0

20524401 cntrlvar 243 cntrlvar 222

* steam flow control valve/primary temperature controller *

*5*********.******i********

S

*

*

*

*

S

*

*

S

*

*

*

*

*

*

*

S

S

the required cold-leg temperature is taken to be the *

weighted mean cl temperature of each loop, so that one *

steam valve may be used to control both il & bl temps.

an error term is generated at each time-step, equal to *

the required cold-leg temperature (at rpv inlet) minus

the actual cold-leg temperature. this error, times a *

constant factor, plus the integrated error times a

constant factor, is used to set the normalised stem *

position of the steam control valve, thus, a cold leg

temperature which is too high generates a positive error *

signal which opens the valve further, drawing more steam

from the sg & thereby reducing the error & the cold leg

temperature. *

the steam valve control function uses unit trips to *

switch between steady-state control & start of transient

and simulates closure of the main steam valve when the

20552600 tcontrll sum 1.0 0.2 0 3 0.0 1.0

20552601 0.0 -0.010 entrivar 523

20552602 -0.0020 entrlvar 525

* sgl mass & liquid level controller, intact loop *

* sg feedwater mass flowrate is continuously adjusted *

* during steady-state to match the steam outflow so as *

* to stabilise the total water mass inventory and the *

* downcomer collapsed liquid level to specified values. *

* an error term is generated equal to the required mass

* minus the actual mass, and multiplied by a constant

* factor, plus a similar error term for the collapsed * * level.this is added to the actual steam mass flowrate,

* times a constant factor, to set the new feedwater flow.*

* the mass error term is used to adjust the feed flow *

* to obtain a total specified water mass inventory, *

* currently set to 208 kg. *

* the level converges to the required level whilst the *

* feed flow converges to the steam flow.

* at start of transient, these values for steam & feed *

* are maintained until the trip signals for sg isolation *

* occur. the steam line isolation valves start to close *

* at time zero (sudden closure), the feedwater valves *

* close at time zero + 0.Ssec delay, with a closure time *

1.0 sec isolating each sg and allowing the

* secondary pressure to rise to reach the sg relief

* valve lift pressure. when cooldown trip occurs, *

* the transient control system takes over to maintain *

* the controlled cooldown rate. *

* this procedure applies to all transients with a *

* specified sec-side cooldown. it is switched off for

* transients with no cooldown, but may be supplemented *

* by a natural cooldown rate from both steam generators * or by simulated steam leaks from sec-side valves.

corresponding trip occurs (eg.low press.131 bar in u.p.) * *

* tables referenced:

580 normalised stem position against flow area *

* 581 deadband, sets temperature control tolerances*

20258000 normarea

20258001 0.0 0.0

20258002 1.0 1.0

20551000 delta-tl sum 3.0 0.0 1

20551001 569.15 -1.0 tepf .145010000

20551200 delta42 sum 1.0 0.0 1

20551201 570.15 -1.0 tempf 260010000

20552000 dt-av sum

20552001 0.0 1.0

20552002 1.0

0.25 0.0

cntrlvar 510

cntrlvar 512

I

20550100 sglmerr sum 1.0 0.0

20550101 236. -1. cntrlvar 504

* (or. 208, poi 213, 200, 206

20554900 ilsglvl sum 1.0 0.0

20554901 0.0 1.100 voidf 5520'

20554902 0.593 voidf 560011

20554903 0.125 " voidf 5101

20554904 0.125 voidf 5101

20554905 0.125 voidf 5101

20554906 0.125 voidf 5102

I

20552100prescram tripunit 1.0 1.0 0

20552101-603

1

10000

1000

70000

80000

90000

00000

20552200 zero-dtl mult 1.0 0.0

20552201 cntrlvar 521

20552202 cntrlvar 520

1

20555000 ilsglvi sum 1.0 0.0 1

20552300 deadbndl function 1.0 20555001 0.0 1.105 voidf 555010000

20552301 cntrlvar 522 581

0.0 1

20258100 reac-t

20258101 -100.0

20258102 -0.10

20258103 -0.10

20258104 0.10

20258105 0.10

20258106 100.0

-100.0

-0.10

0.0

0.0

0.10

100.0

20555002

20555003

20555004

20555005

20555006

20555007

20555008

20555009

20555010

20555011

20555012

20555013

20555014

20555015

20555016

20555017

1.402

0.500

0.500

0.500

0.500

0.500

0.500

0.500

0.500

0.250

0.250

0.250

0.250

0.125

0.125

0.125

voidf

voidf

voidf

voidf

voidf

voidf

voidf

voidf

voidf

voidf

voidf

voidf

voidf

voidf

voidf

voidf

500010000

510010000

510020000

510030000

510040000

510050000

510060000

510070000

510080000

510090000

510100000

510110000

510120000

510130000

510140000

510150000

20552400 intdeltl integral 1.0

20552401 ntrlvar 523

205525o0zero-inl mult 1.0

20552501 cntrlvar 524

20552502 entrlvar 521

0.0 1

0.0 1

A7-45
20555018 0.125 voidf 510160000

20555019 1.0 cntrlvar 549

20555100 sgllverr sum 1.0 0.0 1

20555101 8.25 -1.0 cutrlvar 550

20555200 feedflol sum 1.0 2.07 0

20555201 0.0 0.75 mflowj 580000000

20555202 1.2 cntrlvar 551

20555203 0.1 cntrlvar 501

feedwater flowrate vs time curve, i.I.sg

20555300 feedtrpl tripunit 1.0 1.0 0

20555301 664

20555400 feedtrp2 tripunit 1.0 0.0 0

20555401 503 t

20214000 reac-t

20214001 0.0 2.0

20214002 1.5 0.0

20214003 10000.0 0.0 a

20565009

20565010

20565011

20565012

20565013

20565014

0.250 voidf 610070000

0.250 voidf 610080000

0.250 voidf 610090000

0.250 voidf 610100000

1.100 voidf 652010000

0.681 voidf 660010000

20555500 fltrpdly tripdlay 1.0 0.0

20555501 503

20555600 fltrptim sum 1.0 0.0

20555601 0.0 1.0 time 0

20555602 -1.0 cunrlvar 555

20555700 feedltr function 1.0 2.07

20555701 cnutrlvar 556 140

20555800 fflowlss mult 1.0 2.07

20555801 cutrlvar 553

20555802 cntrtvar 552

20555900 fflowltr mutt 1.0 0.0

20555901 cntrlvar 554

20555902 cnUtrlvar 557

I

I

0

0

0

20565100 sg2lverr sum 1.0 0.0 1

20565101 7.96 -1.0 cntrlvar 650

20565200 feedflo2 sum 1.0 0.69 0

20565201 0.0 0.25 mflowj 580000000

20565202 0.4 cntrlvar 651

20565203 0.1 cntrlvar 601

* feedwater flowrate vs time curve, b.l.sg

20224000 reac-t

20224001 0.0 0.68

20224002 1.5 0.0

20224003 10000.0 0.0

20565700 feed2tr function 1.0 0.69 0

20565701 cntrlvar 556 240

20565800 fllow2ss mult 1.0 0.69 0

20565801 cntrlvar 553

20565802 cntrlvar 652

20565900 fflow2tr muit 1.0 0.0 0

20565901 cntrlvar 554

20565902 cntrlvar 657

20566000 fflowsg2 sum 1.0 0.69 0 3 0.0 1.0

20566001 0.0 1.0 cntrlvar 658

20566002 1.0 cntrlvar 659

20566100 trsglv2 tripunit 1.0 0.0 0

20566101 665

20566200 1vldif2 mult 1.0 0.0 0

20566201 cntrlvar 661 cntrlvar 650

20566300 Ivlstp2 sum 1.0 0.0 0

20566301 0.0 1.0 cntrlvar 662

20566302 1.0 cntrlvar 663

a il sg adjustable throttle valve controller a

* recirculation ratio set to 6.2 MOD 6.4 *

*******************a*aa****aa***a*********a***a***

a the sg downcomer flow is continuously adjusted during

a steady-state by control of the throttle valve between

* downcomer & riser, modelled as a servo-valve and is

a regulated to give the correct recirculation ratio.

* this is defined here as downcomer flowrate divided

* by main feedwater flowrate. an error term is generated

" at each time-step equal to the controlled feedwater

* massflow times the required recirculation ratio, minus

a the actual downcomer flow. this error term, times a

a constant factor, plus the integrated error times a

" constant factor, are summed and 0.5 added to set the

a normalised stem position of the throttle valve, this

a is varied during steady-state to control the flow

" in the downcomer and thereby the recirculation ratio.

20553000 rrldiflo sum 1.0 0.0 0

20553001 0.0 6.4 mflowj 570000000

20553002 -1.0 mflowj 510020000

20556000 fflowsgl sum 1.0 2.07 0 3 0.0 3.0

20556001 0.0 1.0 cntrlvar 558

20556002 1.0 cntulvar 559

20556100 trsglvl tripunit 1.0 0.0 0

20556101 665

20556200 Ividifl mult 1.0 0.0 0

20556201 cntrlvar 561 cntrlvar 550

20556300 Ivlstp• sum 1.0 0.0 0

20556301 0.0 1.0 cntrlvar 562

20556302 1.0 cntrlvar 563 **************************************************

* sg2 level controller, broken loop a

aaaaaaaaaaaaaaaaa*aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa

20560100 sg2merr sum 1.0 0.0 1

20560101 81.9 -1.0 cntrlvar 603

20565000 blsglvl sum 1.0 0.0 1

20565001 0.0 1.128 voidf 655010000

20565002 1.304 voidf 600010000

20565003 1.000 voidf 610010000

20565004 1.000 voidf 610020000

20565005 1.000 voidf 610030000

20565006 1.000 voidf 610040000

20565007 0.500 voidf 610050000

20565008 0.500 voidf 610060000

A7-46
20553100poslstst mult 0.33 0.0 0

20553101 cntrlvar 120

20553102 entrlvar 530

20553200 inteff 1 integral 1.0 -46.63 0

20553201 cntrlvar 531

20553500 sivlpos sum 1.0 0.27 0 3 0.0 1.0

20553501 0.5 0.005 cntrlvar 532

20553502 0.05 cntrlvar 531

* bl sg adjustable throttle valve controller *

* recirculation ratio set to 4.2 MOD 4.3

20563000 rr2diflo sum 1.0 0.0 0

20563001 0.0 4.3 mflowj 670000000

20563002 -1.0 mflowj 610020000

20563100 pos2stst mult 1.0 0.0 0

20563101 cntrlvar 120

20563102 cntrlvar 630

20563200 interr2 integral 1.0 -24.46 0

20563201 cntrlvar 631

20563500 slv2pos sum 1.0 0.30 0 3 0.0 1.0

20563501 0.5 0.008 catrlvar 632

20563502 0.05 entrlvar 631

* collapsed liquid level on riser side, intact loop sgl *

20557400 riserlvl sum 1.0 0.0 1

20557401 0.0 0.5 voids 530180000

20557402 0.5 voids 530190000

20557403 0.5 void! 530200000

20557500 riserlvI sum 1.0 0.0 1

20557501 0.0 1.105 voidf 550010000

20557502 1.402 voids 545010000

20557503 0.125 voidf 530010000

20557504 0.125 voidf 530020000

20557505 0.125 voidf 530030000

20557506 0.125 voidf 530040000

20557507 0.125 void! 530050000

20557508 0.125 voidf 530060000

20557509 0.125 voidf 530070000

20557510 0.125 void! 530080000

20557511 0.25 void! 530090000

20557512 0.25 void! 530100000

20557513 0.25 voidf 530110000

20557514 0.25 void! 530120000

20557515 0.5 void! 530130000

20557516 0.5 void! 530140000

20557517 0.5 void! 530150000

20557518 0.5 void! 530160000

20557519 0.5 voids 530170000

20557520 1.0 cntrlvar 574 ************ S* *** * ***** ** * ********* ******** * S

* level difference in sgl *

20557600 ividiffl sum 1.0 0.0 1

20557601 0.0 1.0 cntrlvar 550

20557602 -1.0 cntrlvar 575

****

* collapsed liquid level on riser side, broken loop sg2

20567500 riserlv2 sum 1.0 0.0 1

20567501 0.0 1.128 void! 650010000

20567502 1.304 void! 645010000

20567503 0.250 void! 630010000

20567504 0.250 void! 630020000

20567505 0.250 void! 630030000

20567506 0.250 voids 630040000

20567507 0.500 void! 630050000

20567508 0.500 void! 630060000

20567509 1.000 void! 630070000

20567510 1.000 voidf 630080000

20567511 1.000 void! 630090000

20567512 1.000 void! 630100000 5.5...ss* ssss* s***ssssss. sssss ***se ss**.**s**..**

* level difference in sg2 *

20567600 lvldifi2 sum 1.0 0.0 1

20567601 0.0 1.0 cntrlvar 650

20567602 -1.0 entrlvar 675

* collapsed level over core heated length * *ss**ss****.*s************************************

20533500 corelev sum 1.0 0 1

20533501 0.0 0.612 void! 335010000

20533502 0.663 voidf 335020000

20533503 0.875 void! 335030000

20533504 0.875 void! 335040000

20533505 0.663 voidf 335050000

20533506 0.740 void! 335060000

* collapsed liquid level over downcomer region

* lower plenum to d.c.upper annulus

20531500 dclevel sum 1.0 0.0 1

20531501 0.0 0.315 voidf 300010000

20531502 0.487 void! 305010000

20531503 0.600 void! 310010000

20531504 0.600 void! 310020000

20531505 0.740 void! 310030000

20531506 0.663 void! 310040000

20531507 0.875 void! 310050000

20531508 0.875 void! 310060000

20531509 0.663 void! 310070000

20531510 0.612 void! 310080000

20531511 0390 void! 310090000

20531512 0.616 void! 310100000

20531513 0.175 void! 315010000

20531514 0.175 void! 320010000 *5***5* ********5*s**s**** *55* * * *** s** S*5* 5*5*5** **

* collapsed liquid level over core region

* lower plenum to upper plenum *

20533600 tcorelvl sum 1.0 0 1

20533601 0.0 1.0 cntrlvar 335

20533602 0.175 void! 320010000

20533603 0.175 void! 315010000

20533604 0.616 void! 325010000

20533605 0390 void! 325020000

20533606 0.600 voids 345010000

A7-47
20533607 0.600 voidf 345020000

20533608 0A87 voidf 350010000

20533609 0.315 voidf 355010000

* intact loop seal *

* collapsed level in descending section *

20515000 ilseald sum 1.0 0 1

20515001 0.0 0.769 voidf 130020000

20515002 1.545 voidf 130030000

* collapsed level in rising section *

20515100 ilseaIr sum 1. 0 1

20515101 0.0 1.545 voidf 130050000

20515102 0.769 voidf 133010000

* broken loop seal *

* collapsed level in descending section

20525000 blseald sum 1.0 0 1

20525001 0.0 1.153 voidf 220020000

20525002 0.622 voidf 220030000

* collapsed level in rising section * **************************************************

20525100 blsealr sum 1.0 0 1

20525101 0.0 0.622 voidf 220050000

20525102 1.153 voidf 223010000 00000000000*00*00000***000000*00*00000*0*00000000*

* *

* heat fluxes

* - electrical heater rod bundle - *

20502000 qbundle sum 1.0 0.0 1

20502001 0.0 0.35396 htrnt 325100101

20502002 0.43228 htrnr 334100101

20502003 0.89050 htrnr 335100101

20502004 1.43300 htnr 335200101

20502005 1.8912 htrM" 335300101

20502006 1.8912 htrnr 335300201

20502007 1.4330 htmr 335500101

20502008 0.89050 htnr 335600101

20502009 0.70894 htnr 336600101

20502010 1.2968 htmr 345100101

20502011 1.2968 htrn 345100201

20502012 1.0526 hwtr 345100301

20502013 0.68085 htmr 345100401

20502014 0.031362 htmr 355000100 ********ooo**************o*****************o*******

* heat transfer sg intact loop

20501800 qsgil sum 1.0 0.0 1

20501801 0.0 0.18472565 htrnt 120300100

20501802 0.18472565 htrnr 120300200

20501803 0.18472565 htrnr 120300300

20501804 0.18472565 htrnr 120300400

20501805 0.18472565 htmnr 120300500

20501806 0.18472565 htmr 120300600

20501807

20501808

20501809

20501810

20501811

20501812

20501813

20501814

20501815

20501816

20501817

20501818

20501819

20501820

0.18472565 hntr 120300700

0.18472565 hutr 120300800

0.3694513 hunr 120300900

0.3694513 htr 120301000

0.3694513 htr 120301100

0.3694513 htmr 120301200

0.7389026 hunr 120301300

0.7389026 hunt 120301400

0.7389026 hunr 120301500

0.7389026 hunt 120301600

0.7389026 hunm 120301700

0.7389026 htr 120301800

0.7389026 hunt 120301900

0.7389026 htmr 120302000

20502100 qsgil sum 1.0 0.0 1

20502101 0.0 0.18472565 humn 120304200

20502102 0.18472565 hunt 120304100

20502103 0.18472565 humn 120304000

20502104 0.18472565 humn 120303900

20502105 0.18472565 hunt 120303800

20502106 0.18472565 hunr 120303700

20502107 0.18472565 hunt 120303600

20502108 0.18472565 htmr 120303500

20502200 qsgil sum 1.0 0.0 1

20502201 0.0 1.4997240 hunr 120302100

20502202 1.4997240 htr 120302200

20502203 0.7389026 hunt 120302300

20502204 0.7389026 htmr 120302400

20502205 0.7389026 htnr 120302500

20502206 0.7389026 htnr 120302600

20502207 0.7389026 hunr 120302700

20502208 0.7389026 hunr 120302800

20502209 0.7389026 hum" 120302900

20502210 0.7389026 hunr 120303000

20502211 0.3694513 hutr 120303100

20502212 0.3694513 htmr 120303200

20502213 0.3694513 hutw 120303300

20502214 0-3694513 hutw 120303400

20502215 1.0 cntrlvar 021

20502216 1.0 cntrlvar 018

* heat transfer sg broken loop *

*s****************00******************************

20502300 qsgbl sum 1.0 0.0 1

205023010.0 0.12315045 htnr 210300100

20502302 0.12315045 hunr 210300200

20502303 0.12315045 hunr 210300300

20502304 0.12315045 htr 210300400

20502305 0.2463009 htr 210300500

20502306 0.2463009 hunr 210300600

20502307 0.49260175 hunr 210300700

20502308 0.49260175 hunt 210300800

20502309 0.49260175 htr 210300900

20502310 0.49260175 humn 210301000

20502311 0.4986716 hunt 210301100

20502312 0.4986716 htmr 210301200

20502313 0.49260175 htr 210301300

20502314 0.49260175 hunt 210301400

20502315 0.49260175 htru 210301500

20502316 0.49260175 hutm 210301600

20502317 0.2463009 htr 210301700

20502318 0.2463009 hunr 210301800

20502319 0.12315045 hunm 210301900

20502400 qsgbl sum 1.0 0.0 1

20502401 0.0 0.12315045 hunt 210302000

20502402 0.12315045 htmr 210302100

20502403 0.12315045 humn 210302200

A7-48
20502404 1.0 cntrlvar 023

* this section sums the heat fluxes from each heat

* structure in the various parts of the loop and

* assigns these values to control variables, this

* allows the exchange of heat between the structures

* and the fluid to be examined.

* intact loop hot leg

20516100 fluxinhl sum 1.0 0.0 1

20516101 0.0 1.579d-! htrnr 100000100

20516102 4.214d-2 htrnr 101000100

20516103 3.936d-2 htrr 101100100

20516104 1.579d-1 htmr 100100100

20516105 3.705d-1 htrnr 100100200

20516106 !.449d-1 htmr 100000200

20516107 2.894d-2 htmr 101000200

20516108 6.412d- htmrr 120000100

20516109 1.676d-1 htrnr 120200100

20516110 4.020d-2 harnr 120400100

20516111 9.630d-2 hornr 120500100

* intact loop seal

20516200 fluxiz)ls sun 1.0 0.0 1

20516201 0.0 1.449d-1 htrr 100000300

20516202 1.776d-1 htor 100000400

20516203 2.711d-1 htrnr 100100300

20516204 3.730d-1 htrnr 100100400

20516205 1.447d-1 htrr 100100500

20516206 3.728d-1 htmr 100100600.

20516207 2.894d-2 htrnr 101000300

20516208 7.317d-2 htmr 101000400

20516209 3.936d-2 htmr 101100200

20516210 6.412d-1 htrnr 120000200

20516211 1.676d-1 htmr 120200200

20516212 4.020d-2 htrnr 120400200

20516213 9.630d-2 htmr 120500101

* intact loop cold leg

20516300 fluxincl sum 1.0 0.0 1

20516301 0.0 1.706d-1 htmr 100000500

20516302 1.591d-1 htrnr 100000600

20516303 2.689d-1 htrnr 100100700

20516304 3.033d-1 htmr 100100800

20516305 5.580d-2 htrnr 101000500

20516306 2.454d-2 htmr 101000600

20516307 2.936d-2 htrmr 101100300

20516308 1.257d-1 htumr 137000100

* total flux for Intact loop

20526102

20526103

20526104

20526105

20526106

20526107

20526108

20526109

20526110

20526111

20526112

9.906d-2 htrnr

1.282d-1 htmr

9.935d-2 htmr

9.935d-2 htrnr

5.923d-2 htrnr

1.854d-2 htrnr

2.462d-2 htnr

4.096d-1 htrnr

6.857d-1 htmr

1.940d-2 htmrnr

3.920d-2 htrnr

200000200

200100100

200100200

200100300

201000100

201000200

201100100

210000100

210200100

210400100

210500100

* broken loop seal

20526200 fluxbrls sum 1.0 0.0 1

20526201 0.0 9.906d-2 htmr 200000300

20526202 1.681d-1 htrnr 200000400

20526203 2.175d-1 htmr 200100400

20526204 1.073d-1 htrnr 200100500

20526205 1.060d-I htrnr 200100600

20526206 1.073d-1 htmr 200100700

20526207 3.288d-2 htmr 201000300

20526208 5.503d-2 htmr 201000400

20526209 2.462d-2 htrnr 201100200

20526210 4,096d-I htmr 210000200

20526211 6.857d-1 htmr 210200200

20526212 1.940d-2 htmr 210400200

20526213 3.920d-2 htmr 210500101

• broken loop cold leg

20526300 fluxbrcl sum 1.0 0.0 1

20526301 0.0 1.242d-1 htmr 200000500

20526302 9.037d-2 hmrn 200000600

20526303 1.829d-1 htmnr 200100800

20526304 1.4314-1 htmr 200100900

20526305 6.082d-2 htmr 201000500

20526306 3.172d-2 htmr 201000600

20526307 2.462d-2 htrnr 201100300

20526308 2.463d-2 htrer 201100400

20526309 1.257d-1 htmr 230000100

• total flux for broken loop

20526500 fluxbrt sum

20526501 0.0 1.0

20526502 1.0

20526503 1.0

1.0 0.0 1

cntrlvar 261

entrlvar 262

cntrlvar 263

20517000 fluxint sum

20517001 0.0 1.0

20517002 1.0

20517003 1.0

* broken loop hot leg

1.0 0.0 1

cntrlvar 161

entrlvar 162

cntrlvar 163

* vessel downcomer above loop piping

20536100 fluxdoto sum 1.0 0.0 1

20536101 0.0 3.088d-1 htmr 310000100

20536102 4.773d-1 htmr 310000200

20536103 4.406d-1 htrnr 310200401

20536104 1.900d-I htrnr 310200501

20536105 9.500d-2 htmr 310300201

20536106 6.861d-2 htmr 310700100

20536107 3.619d-2 htmr 310500100

20536108 3.619d-2 hru-r 310500200

* downcomer top half

20536200 fluxdomi sum 1.0 0.0 1

20536201 0.0 1.666d-1 htrnr 310000300

20536202 5.881d-1 hbtr 310000400

20526100 fluxbrhl sum 1.0 0.0 1

20526101 0.0 9.037d-2 hrnr 200000100

A7-49
20536203

20536204

20536205

20536206

20536207

20536208

20536209

20536210

20536211

20536212

20536213

20536214

20536215

20536216

71.53d-1

6.498d.I

8.576d-1

7.017d-1

5.998d-1

6.695d-1

5.428d-1

5.428d-I

4.215d-1

3.619d-2

3.619d-2

7.238d-2

7.238d-2

7.238d-2

htmr 310000500

htrnr 310000600

htrr 310000700

htmr 310100401

htrnr 310100501

htmr 310100601

hurnr 310200201

htrnr 310200301

htmr 310600100

htmr 310500300

htmr 310500400

htrnr 310500500

htmr 310500600

htmr 310500700

20536701

20536702

20536703

20536704

20536705

0.0 3.7324-I htmr 310200200

3.732d-1 htrnr 310200300

3.0294-1 htrnr 310200400

1.306d-1 htrnr 310200500

6.531d-2 htmr 310300200

* downcomer bottom half

20536300 fluxdobo sum 1.0 0.0 1

20536301 0.0 8.576d-1 htrnr 310000800

20536302 6.498d-1 ht-nr 310000900

20536303 2.764d-1 htrnr 310001000

20536304 3.822d-1 htrnr 310001100

20536305 6.038d-1 htrn 310001200

20536306 5.537d-1 htrnr 310100101

20536307 5.999d-1 htrnr 310100201

20536308 7.917d-1 htrnr 310100301

20536309 3.800d-1 htrnr 310200101

20536310 3.854d-1 htrnr 310300101

20536311 1.448d-1 htrnr 310400101

20536312 3.234d-1 htrnr 310600200

20536313 1.960d-1 htmr 310700200

20536314 7.238d-2 htnr 310500800

20536315 3.619d-2 htrnr 310500900

20536316 3.619d-2 htrrr 310501000

20536317 3.619d-2 htrnr 310501100

20536318 3.619d-2 htrnr 310501200

* complete downcomer

20536400 fluxdown sum 1.0 0.0 1

20536401 0.0 1.0 cntrlvar 361

20536402 1.0 cntrlvar 362

20536403 1.0 cntrivar 363

* lower plenum and core entry

20536500 fluxcobo sum 1.0 0.0 1

20536501 0.0 1.715d-1 htmr 310001300

20536502 2.794d-1 hurm 310001400

20536503 2.613d-1 htmr 310200100

20536504 2.650d-1 htrnr 310300100

20536505 6.535d-2 htrnr 310400100 *

* core centre region

20536600 fluxcomi sum 1.0 0.0 1

20536601 0.0 2.600d-1 htrnr 310100100

20536602 2.773d-i htrnr 310100200

20536603 3.660d-1 htrur 310100300

20536604 3.660d-1 htrnr 310100400

20536605 2.773d-1 htrnr 310100500

20536606 3.095d-1 htmr 310100600

* core top region

20536700 fluxcoto sum 1.0 0.0 1

* vessel upper head

20536800 fluxuphe sum 1.0 0.0 1

20536801 0.0 3.4804-1 htmr 370000100

20536802 3.223d-1 htmr 370000200

20536803 3.480d-1 htnr 370000300

20536804 8.897d-2 htrnr 365000100

20536805 1.991d-1 htmr 365000200

20536806 1.512d-1 htmr 380000100

* complete vessel

20537000 fluxvess sum 1.0 0.0 1

20537001 0.0 1.0 cntrlvar 364

20537002 1.0 cntrlvar365

20537003 1.0 cntrlvar 366

20537004 1.0 cntdvar 367

20537005 1.0 cntrlvar368 ,

* pressurizer

20547000 fluxpres sum 1.0 0.0 I

20547001 0.0 3.029d-1 ht-nr 410000100

20547002 3.517d-1 htmnr 410000200

20547003 3.517d-1 htmr 410000300

20547004 3.517d-1 htrnr 410000400

20547005 3.517d-1 htrn 410000500

20547006 3.517d-1 hurm 410000600

20547007 3.517d-I htrnr 410000700

20547008 2.286d-1 htrnr 410000800

20547009 2.697d-I htrnr 410000900

20547010 5.226d-2 htrn 410100100

*20547011 7.174d-2 htr 400000100

*20547012 1.078d-1 hnr 400000200

*20547013 1.161d-I htmr 400000300

* intact loop steam generator

* total secondary side metal-to-fluid heat flow

20585000 fluxsglI sum 1.0 0.0 1

20585001 0.0 3.3175219 htrnr 120300101

20585002 3.3175219 htrr 120300201

20585003 33175219 htrnr 120300301

20585004 1.6833637 htmr 120300401

20585005 1.6833637 htrnr 120300501

20585006 33175219 hrnr 120300601

20585007 3.3175219 htrnr 120300701

20585008 3.3175219 htrnr 120300801

20584800 fluxduml sum 1.0 0.0 1

20584801 0.0 0.15504 htmr 510000100

20584802 0.28208 htrnr 555000100

20584803 0.21648 htrnr 560200100

20585100 fluxsgl2 sum 1.0 0.0 1

20585101 0.0 0.00402 htrnr 120400101

20585102 0.00402 htrnr 120400201

20585103 1.8912388 htmr 530100100

20585104 1.8912388 htmr 530100200

20585105 1.8912388 htrnr 530100300

20585106 1.3257584 htrnr 530100400

20585107 0.561459 htmr 530100500

A7-50
20585108

20585109

20585110

20585111

20585112

20585113

20585114

20585115

20585116

20585117

20585118

20585119

20585120

1.9163715 htrnr 530100101

1.9163715 htrnr 530100201

1.9163715 htmr 530100301

1.3433764 htmr 530100401

0.568921 htmr 530100501

2.0671680 htmr 510100100

2.0671680 htrnr 510100200

2.0671680 htrnr 510100300

1.4490847 hew" 510100400

1.17599 htmr 555100100

1.38350 htrnr 560100100

1.10034 htmr 560100200

1.0 cntrlvar 848

20585600 fluxsgl sum 1.0 0.0

20585601 0.0 1.0 cntrlvar 850

20585602 1.0 cntrivar 851

20585603 1.0 cntrlvar 852

I

* total flux for broken loop secondary side

20585700 fluxsg2 sum 1.0 0.0

20585701 0.0 1.0 entrlvar 853

20585702 1.0 cntrlvar 854

20585703 1.0 cntrlvar 855

I

20585200 fluxsgl3 sum 1.0 0.0 1

205852010.0 0.9569291 htmr 530200101

20585202 0.9569291 htrnr 530200201

20585203 0.9569291 htrnr 530200301

20585204 0.3373175 htrnr 530200401

20585205 0.022246 htrnr 530300101

* broken loop steam generator

* total secondary side metal-to-fluid heat flow

20585300 fluxsg21 sum 1.0 0.0 1

20585301 0.0 1.1058406 htrnr 210300101

20585302 1.1058406 htMr 210300201

20585303 1.1058406 htrnr 210300301

20585304 0.5597334 htrnr 210300401

20585305 0.5597334 htrnr 210300501

20585306 1.1058406 htrnr 210300601

20585307 1.1058406 htrnr 210300701

20585308 1.1058406 htrr 210300801

20584900 fluxdum2 sum 1.0 0.0 1

205849010.0 0.054287 htmr 610000100

20584902 0.15017 htmr 655000100

20584903 0.07258 htrn 660200100

20585400 fluxsg22 sum 1.0 0.0 1

205854010.0 0.00194 htrnr 210400101

20585402 0.00194 htr 210400201

20585403 1.2629203 htrnr 630100100

20585404 1.2629203 htmr 630100200

20585405 1.2629203 htrnr 630100300

20585406 0.823424 htrnr 630100400

20585407 0.328621 htmr 630100500

20585408 1.2817698 htmr 630100101

20585409 1.2817698 htmnr 630100201

20585410 1.2817698 htrr 630100301

20585411 0.8357139 htr 630100401

20585412 0.333526 htmr 630100501

20585413 1.35717 htrnr 610100100

20585414 1.35717 htrnr 610100200

20585415 1.35717 ht-nr 610100300

20585416 0.88487 htmr 610100400

20585417 0.95807 htrnr 655100100

20585418 0.874525 htrnr 660100100

20585419 0.636173 htrnr 660100200

20585420 1.0 entrlvar 849

20585500 fluxsg23 sum 1.0 0.0 1

20585501 0.0 0.7904247 htrnr 630200101

20585502 0.7904247 ht-nr 630200201

20585503 0.7904247 htrnr 630200301

20585504 0.2806008 htrnr 630200401

20585505 0.015394 htrn 630300101

• total flux for intact loop secondary side

• flusso termico scambiato ira pimario e secondario

20500300 fluxsg4l sum 1.0 0.0 1

20500301 0.0 0.2054601754 htrnr 120300101

20500302 0.2054601754 htrnr 120300201

20500303 0.2054601754 htmr 120300301

20500304 0.2054601754 htmr 120300401

20500305 0.2054601754 htmr 120300501

20500306 0.2054601754 htrnr 120300601

20500307 0.2054601754 htmr 120300701

20500308 0.2054601754 htrm 120300801

20500309 0.410920325 htrnr 120300901

20500310 0.410920325 htrnr 120301001

20500311 0.410920325 hurnr 120301101

20500312 0.410920325 htmr 120301201

20500313 0.82184065 htrnr 120301301

20500314 0.82184065 horw 120301401

20500315 0.82184065 htmr 120301501

20500316 0.82184065 hunr 120301601

20500317 0.82184065 hmrn 120301701

20500318 0.82184065 htnr 120301801

20500319 0.82184065 htmr 120301901

20500320 0.82184065 htmr 120302001

20500400 fluxsg5l sum 1.0 0.0 1

205004010.0 1.6680604 htmr 120302101

20500402 1.6680604 htrnr 120302201

20500403 0.82184065 htrr 120302301

20500404 0.82184065 htmrr 120302401

20500405 0.82184065 htmr 120302501

20500406 0.82184065 htmr 120302601

20500407 0.82184065 htrnr 120302701

20500408 0.82184065 htmr 120302801

20500409 0.82184065 htmr 120302901

20500410 0.82184065 htmr 120303001

20500411 0.410920325 hor 120303101

20500412 0.410920325 htrnr 120303201

20500413 0.410920325 htrnr 120303301

20500414 0.410920325 htmr 120303401

20500415 0.2054601754 htmr 120303501

20500416 0.2054601754 htmr 120303601

20500417 02054601754 btmr 120303701

20500418 0.2054601754 htrr 120303801

20500419 02054601754 htrnr 120303901

20500420 02054601754 hirnr 120304001

S

20500500 fluxsg8l sum 1.0 0.0 1

20500501 0.0 02054601754 hbrr 120304101

20500502 0.2054601754 htrnr 120304201

20501100 fluxsg6l sum 1.0 0.0

205011010.0 1.0 entrlvar 003

20501102 1.0 cntrlvar 004

20501103 1.0 cutrlvar 005

I

20500600 fluxsg7l sum 1.0 0.0 1

20500601 0.0 0.18472565 htrnr 120300100

20500602 0.18472565 htnr 120300200

20500603 0.18472565 htrnr 120300300

A7-51
20500604

20500605

20500606

20500607

20500608

20500609

20500610

20500611

20500612

20500613

20500614

20500615

20500616

20500617

20500618

20500619

20500620

0.18472565

0.18472565

0.18472565

0.18472565

0.18472565

0.3694513

0.3694513

0.3694513

0.3694513

0.7389026

0.7389026

0.7389026

0.7389026

0.7389026

0.7389026

0.7389026

0.7389026

htmr

htmr

htrnr

htmr

htrnr

htmr

htmr

htrnr

htrnr

htrr

hutm

htrnr

htmr

htrnr

htrnr

htmr

huar

120300400

120300500

120300600

120300700

120300800

120300900

120301000

120301100

120301200

120301300

120301400

120301500

120301600

120301700

120301800

120301900

120302000

20500700 fluxsgS1 sum 1.0 0.0 1

20500701 0.0 1.4997240 humn 120302100

20500702 1.4997240 htmr 120302200

20500703 0.7389026 htrnr 120302300

20500704 0.7389026 htrnr 120302400

20500705 0.7389026 htrnr 120302500

20500706 0.7389026 htrnr 120302600

20500707 0.7389026 htrnr 120302700

20500708 0.7389026 htrnr 120302800

20500709 0.7389026 htr 120302900

20500710 0.7389026 htmr 120303000

20500711 0.3694513 htrm 120303100

20500712 0.3694513 htrnr 120303200

20500713 0.3694513 htrnr 120303300

20500714 0.3694513 htrnr 120303400

20500715 0.18472565 htrnr 120303500

20500716 0.18472565 htrnr 120303600

20500717 0.18472565 htrnr 120303700

20500718 0.18472565 hurnr 120303800

20500719 0.18472565 htnr 120303900

20500720 0.18472565 hutnr 120304000

20500800 fluxsg8l sum 1.0 0.0 1

20500801 0.0 0.18472565 hutr 120304100

20500802 0.18472565 htrnr 120304200

*0

20500900 fluxsg9l sum 1.0 0.0 1

20500901 0.0 1.0 cnttivar 006

20500902 1.0 cntrlvar 007

20500903 1.0 cntrlvar 008

20501300 fluxsg4l sum 1.0 0.0 1

205013010.0 0.13697345 htmr 210300101

20501302 0.13697345 hutr 210300201

20501303 0.13697345 htrr 210300301

20501304 0.13697345 htr 210300401

20501305 0.2739469 htrnr 210300501

20501306 0.2739469 htrnr 210300601

20501307 0.547893754 htrnr 210300701

20501308 0.547893754 htrr 210300801

20501309 0.54789375 htrnr 210300901

20501310 0.54789375 htmr 210301001

20501311 0.5546449 hurnr 210301101

20501312 0.5546449 huwr 210301201

20501313 0.54789375 htmr 210301301

20501314 0.54789375 htmr 210301401

20501315 0.54789375 htrnr 210301501

20501316 0.54789375 humr 210301601

20501317 0.2739469 hutm 210301701

20501318 0.2739469 htrr 210301801

20501319 0.13697345 htrnr 210301901

20501320 0.13697345 htmr 210302001

20501400 fluxsgsl sum 1.0 0.0 1

20501401 0.0 0.13697345 htmr 210302101

20501402 0.13697345 hutf 210302201

20501500 fluxsg6l sum 1.0 0.0 1

20501501 0.0 1.0 cntrlvar 013

20501502 1.0 cntrivar 014

20501600 fluxsg7l sum 1.0 0.0 1

205016010.0 0.12315045 hzrnr 210300100

20501602 0.12315045 htmr 210300200

20501603 0.12315045 htrnr 210300300

20501604 0.12315045 htrmr 210300400

20501605 0.2463009 htrnr 210300500

20501606 0.2463009 htrnr 210300600

20501607 0.492601755 htmr 210300700

20501608 0A92601755 hunm 210300800

20501609 0.49260175 htrnr 210300900

20501610 0.49260175 hrnr 210301000

20501611 0.4986716 htrnr 210301100

20501612 0.4986716 huntr 210301200

20501613 0.49260175 htmr 210301300

20501614 0.49260175 htnr 210301400

20501615 0.49260175 htrnr 210301500

20501616 0.49260175 htm 210301600

20501617 0.2463009 hunt 210301700

20501618 0.2463009 htrnr 210301800

20501619 0.12315045 hunr 210301900

20501620 0.12315045 haw, 210302000

20501700 fluxsg8I sum 1.0 0.0 1

20501701 0.0 0.12315045 htrnr 210302100

20501702 0.12315045 humr 210302200

20501900 fluxsg9l sum 1.0 0.0 1

20501901 0.0 1.0 cntrlvar 016

20501902 1.0 cntrlvar 017

* total flux for complete primary loop 0

0

20597000 fluxloop sum 1.0 0.0 1

20597001 0.0 1.0 cntrlvar 170

20597002 1.0 cnutrlvar 265

20597003 1.0 cntrlvar 370

20597004 1.0 cntrlvar 470

20597005 1.0 cntrlvar 420 * przr.power

* integrated total flux for complete primary loop

20597100 fluxtotl integral 1.0 0.0 0

20597101 cntrlvar 970

* total flux for complete secondary side

20597200 fluxsgs sum 1.0 0.0 1

20597201 0.0 1.0 cntrlvar 856

20597202 1.0 cntrlvar 857

* pump seal bleed flow from upper plenum varied to 0

* maintain steady-state level of 5.1 m in pressuriser*

20575000 preslelr sum 1.0 0.0 1

20575001 -4.8 1.0 cntrlvar 410

20575500 upbleedf sum 1.0 0.0 1 3 0.0 0.1

20575501 0.0 1.0 cntrlvar 750

A7-52
* lower pressure injection system

20580000 hpis-dp sum 1.0 0.0 I

20580001 -1.Od5 1.0 p 145010000

20580500 hpisflow function 1.0 0.0 0

20580501 cntrilvar 800 810

* table of dp(bar) against flowrate(kg/s)

* bar kg/s

20281000 reac-t

20281001 0.0 0.4

20281002 19.00d5 0.4

20281003 79.00d5 0.4

20281004 119.0d5 0.4

20281005 174.0d5 0.4

* this section calculates the heat losses from the primary

* system to the environment & an overall heat balance.

*

* heat loss from instrumented spool pieces, intact loop

20505000 htlsilsp sum 1.0 0.0 1

20505001 0.0 2.3075d-1 htmr 100000101

20505002 2.1181d-I htmr 100000201

20505003 2.1lSd-I htmr 100000301

20505004 2.5951d-1 htmrr 100000401

20505005 2.4936d-1 htrnr 100000501

20505006 2.3245d-1 htrnr 100000601 *

* hLIoss from it pump casing

20505100 htlsilp sum 1.0 0.0 1

205051010.0 3.217d-1 htrnr 137000101

* total ht.loss from il spool pieces + pump casing

20505200 htisil sum 1.0 0.0 1

20505201 0.0 1.0 entrlvar 050

20505202 1.0 cntrlvar 051

* htloss from instrumented spool pieces, broken loop

20505300 htlsblsp sum 1.0 0.0 1

20505301 0.0 1.5702d-1 htrnr 200000101

20505302 1.7212d-1 htmr 200000201

20505303 1.7212d-1 htrnr 200000301

20505304 2.9216d-1 hunr 200000401

20505305 2.1591d-1 htmrnr 200000501

20505306 1.5702d-1 htrnr 200000601

* htloss from bl pump casing

20505400 htlsblp sum 1.0 0.0 1

20505401 0.0 3.217d-1 htrnr 230000101

* total hLIosS from bl spool pieces + pump casing

20505500 htlsbl sum 1.0 0.0 1

20505501 0.0 1.0 cntrlvar 053

20505502 1.0 cntrlvar 054

* ht.loss from rpv downcomer walls and supports

20505600 htlsrpvw sum 1.0 0.0 1

20505601 0.0 3.4003d-I htrnr 310000101

20505602 5.2569d-I htrnr 310000201

20505603 1.8351d-I ht•nr 310000301

20505604 6.4767d-1 htrnr 310000401

20505605 7.9879d-1 htmr 310000501

20505606 7.1568d-l htmr 310000601

20505607 9.4452d-1 htrnr 310000701

20505608 9.4452d-1 htrnr 310000801

20505609 7.1568d-1 htmr 310000901

20505610 3.0441d-1 htmr 310001001

20505611 4.2099d-1 litmr 310001101

20505612 6.6494d-l htmr 310001201

20505613 1.8890d-1 htrnr 310001301

20505614 3.0764d-1 how- 310001401

20505615 5.0685d-I htrnr 310600101

20505616 3.8898d- htrmr 310600201

* ht-loss from rpv downcomer stubpipes & instn.

20505700 htlsrpvi sum 1.0 0.0 1

205057010.0 1.1038d-1htmr 310500101

20505702 1.1038d-l htmr 310500201

20505703 1.1038d-1 htrnr 310500301

20505704 1.1038d-1 htrnr 310500401

20505705 2.2077d-1 htmr 310500501

20505706 2-2077d-I htrnr 310500601

20505707 2.2077d-1 htrnr 310500701

20505708 2.2077d-1 htnr 310500801

20505709 1.1038d-1 htrnr 310500901

20505710 1.1038d-1 htmr 310501001

20505711 1.1038d-I htmr 310501101

20505712 1.1038d-1 htmr 310501201

* htloss from rpv flange & power connector

20505800 htlsrpvf sum 1.0 0.0 1

20505801 0.0 1.2315d-1 htrnr 310700101

20505802 3.5186d- hlrnr 310700201

* ht.loss from rpv upper mounting plate

20505900 htlsrpvp sum 1.0 0.0 I

20505901 0.0 0.0731296 htmr 355000101

* total htloss from rpv d.c.walls, support structures,

* flanges, power connector (lower) & upper mtg.plate

20506000 htlsrpv sum 1.0 0.0 1

20506001 0.0 1.0 cntrlvar 056

20506002 1.0 cntrlvar 057

20506003 1.0 cntrlvar 058

20506004 1.0 cntrlvar 059

* ht.loss from pump seal flow from u.p. & l.p.

* based on enthalpy

* valid only in liquid cond's

20504000 swdup.pv div 1.0 0.0 1

20504001 rho 355010000p 355010000

20504100 swdup.h sum 1.0 0.0 1

20504101 0.0 1.0 catlvar 040

20504102 1.0 uf 355010000

20504200 hl.swdup mult 1.0 0.0 1

20504201 cntrlvar 041 mflowj 358000000

20504300 swdlp.pv div 1.0 0.0 1

A7-53
20504301 rho 3200 10000 p 320010000

20504400 swdlp.h sum 1.0 0.0 1

20504401 0.0 1.0 cntrlvar 043

20504402 1.0 uf 320010000

20504500 hl.swdlp moult 1.0 0.0 1

20504501 cntrlvar 044 mflowj 359000000

* bl pump work, torque * velocity * -1.0

20507800 bl.pmp.w mul -1.0 0.0

20507801 pmptrq 225 pmpvel 225

I

• total input power to primary fluid, core power + pump

work

20506300 totalbf sum 1.0 0.0

20506301 0.0 1.0 cntrlvar 045

20506302 1.0 cntrlvar 042

* htinput due toil pump seal flow

* valid only in liq. cond's

20506400 ilpmp.pv div 1.0 0.0

20506401 rho 136010000 p 13

I 20508000 enrgy.in sum 1.0 0.0

20508001 0.0 1.0 cntilvar 010

20508002 1.0 cntrlvar 077

20508003 1.0 cntrlvar 078

I

1

6010000

20506500 ilpmp.h sum 1.0 0.0 1

20506501 0.0 1.0 cntrivar 064

20506502 1.0 uf 136010000

20506600 hl.ilpmp mult 1.0 0.0 1

20506601 cntrivar 065 mflowj 134000000

* hLinput due to bI pump seal flow

20506700 blpmp.pv div 1.0 0.0 1

20506701rho 226010000 p 226010000

20506800 blpmp.h sum 1.0 0.0 1

20506801 0.0 1.0 cntrlvar 067

20506802 1.0 uf 226010000

20506900 hl.blpmp mult 1.0 0.0 1

20506901 cntrivar 068 mflowj 224000000

* nett htloss due to sealwater flow into both pumps &

* draining of pump sealwater from upper & lower plena *

* total heat removed, ht.losses to environment + both sg's

20509000 engy.out sum 1.0 0.0 1

20509001 0.0 1.0 cntrlvar 075

20509002 -1.0 cntrlvar 022

20509003 -1.0 cntrlvar 024

• secondary side heat losses

* ht.loss from intact loop steam generator

20508200 hllsgl sum 1.0 0.0 1

205082010.0 0.102533725 htrnr 510100101

20508202 0.102533725 hum 510100201

20508203 0.102533725 htrnr 510100301

20508204 0.102533725 humnr 510100401

20508205 0.14647675 htmnr 510100501

20508206 0.14647675 htmr 510100601

20508207 0.14647675 htmr 510100701

20508208 0.14647675 htr 510100801

20508209 0.292953525 hwr- 510100901

20508210 0.292953525 htmr 510101001

20508211 0.292953525 htrnr 510101101

20508212 0.292953525 htrmr 510101201

20508213 0.585907025 htrnr 510101301

20508214 0.585907025 htmr 510101401

20508215 0.585907025 htrnr 510101501

20508216 0.585907025 htrnr 510101601

20508217 0.585907025 htrn 510101701

20508100 hllsgl sum 1.0 0.0 1

205081010.0 1.00292 htrnr 555100101

20508102 0.97806 hirr 560100101

20508103 1.81427 hatrw 560100201

20508104 0.06185 htmr 510000101

20508105 0.06185 hltnr 510000201

20508106 0.06185 htmr 510000301

20508107 0.06185 htrr 510000401

20508108 0.55041 htmr 555000101

20508109 0.21648 htrnr 560200101

20508110 0.585907025 htrnr 510101801

20508111 0.585907025 htrnr 510101901

20508112 0.585907025 htrnr 510102001

20508113 1.6428833 htrnt 510102101

20507000 hl.up-2p sum 1.0 0.0

20507001 0.0 1.0 cntrlvar 063

20507002 -1.0 cntllvar 066

20507003 -1.0 cntrlvar 069

1

* ht.loss from pressurizer

20507100 hllspriz sum 1.0

20507101 0.0 0.38956 htrnr

20507102 0.45239 htrnr

20507103 0.45239 htrnr

20507104 0.45239 htrnr

20507105 0.45239 htrnr

20507106 0.45239 htmr

20507107 0.45239 htrnr

20507108 029405 htrnr

20507109 0.34683 htrnr

20507110 0.15018 htmr

0.0 1

410000101

410000201

410000301

410000401

410000501

410000601

410000701

410000801

410000901

410100101

*nett ht.loss to environment (excl.sg's & przr.)

20507500 ht.lossl sum 1.0 0.0 1

20507501 0.0 1.0 cntrlvar 052

20507502 1.0 cntrlvar 055

20507503 1.0 catrlvar 060

20507504 1.0 cntrlvar 070

* it pump work, torque * velocity * -1.0

20507700 il.pmp.w muit -1.0 0.0 1

20507701 pmptrq 135 pmpvel 135

20509200 hllsssgl sum 1.0 0.0

20509201 0.0 1.0 cntrlvar 081

20509202 1.0 cntrlvar 082 S

I

* ht.loss from broken loop steam generato2

20509400 hllsssg2 sum 1.0 0.0 1

20509401 0.0 0.1609752 htmr 610100101

A7-54
20509402

20509403

20509404

20509405

20509406

20509407

20509408

20509409

20509410

20509411

20509412

20509413

20509414

20509415

20509416

20509417

20509418

0.1609752 htrnr 610100201

0.1916375 htrnr 610100301

0.1916375 htrnr 610100401

0.383275 htrnr 610100501

0.383275 htrnr 610100601

0.76655 htmr 610100701

0.76655 htrnr 610100801

0.76655 horn 610100901

0.76655 htnr 610101001

0.99958 htnr 610101101

0.90932 htrnr 655100101

0.65039 htrnr 660100101

1.05055 htmr 660100201

0.0446105 htmr 610000101

0.0446105 htrnr 610000201

0.31416 htmr 655000101

0.07258 htmr 660200101

20258218

20258219

20258220

20258221

20258222

20258223

20258224

46.943

55.058

64.202

74.461

85.927

98.7

112.89

0.763

0.861

0.9685

1.0845

1.2105

1.3445

1.495

* ht.loss from steam line up to manifold

20509600 steamlne sum 1.0 0.0 1

20509601 0.0 1.5540 htmr 564100101

20509602 0.8801 htrnr 664100101

* calculated stratified water levels at horizontal

* measurement inserts, locations 11,16,21,25,26

" table 123: (theta-sin.theta)/2pi .vs. hId

* table input is liquid void fraction in volume

* table output is normal ised stratified level

20212300 reac-t

20212301 0.0 0.0

20212302 0.0004743 0.004278

20212303 0.0037559 0.017037

20212304 0.0124605 0.038060

20212305 0.0288344 0.066987

20212306 0.0908451 0.146447

20212307 0.1955011 0.25

20212308 0.3370892 0.370590

202123090.5 0.5

20212310 0.6629108 0.629410

20212311 0.8044989 0.75

20212312 0.9091549 0.853553

20212313 0.9711656 0.933013

20212314 0.9875395 0.961940

20212315 0.9962441 0.982963

20212316 0.9995257 0.995722

20212317 1.0 1.0

* table of dp/dt,sat as a function of pressure

* table of tsat (k) as a function of p (pa)

20255000 reac-t 0 1.Od5 1.0

20255001 4.0 416.77

20255002 5.0 424.99

20255003 6.0 431.99

20255004 7.0 438.11

20255005 8.0 443.56

20255006 9.0 448.51

20255007 10.0 453.03

20255008 12.0 461.11

20255009 14.0 468.19

20255010 16.0 474.52

20255011 18.0 480.26

20255012 20.0 485.52

20255013 25.0 497.09

20255014 30.0 506.99

20255015 35.0 515.69

20255016 40.0 523.48

20255017 45.0 530.56

20255018 50.0 537.06

20255019 55.0 543.08

20255020 60.0 548.70

20255021 65.0 553.97

20255022 70.0 558.94

20255023 75.0 563.65

20255024 80.0 568.12

20255025 85.0 572.38

20255026 90.0 576.46

20255027 95.0 580.36

20255028 100.0 584.11

20255029 110.0 591.20

20255030 120.0 597.80

20255031 130.0 603.98

20255032 140.0 609.79

20255033 150.0 615.28

20255034 160.0 620.48

20255035 170.0 625.41

20255036 180.0 630.11

20255037 190.0 634.58

20255038 200.0 638.85

20255039 210.0 642.93

20255040 220.0 646.84

20255041 221.2 647.30

* am decay function (I000M)

20211000 reac-t

20211001 0.0 0.0699

20211002 0.1 0.0675

20211003 1.0 0.0625

20211004 2.0 0.059

20211005 4.0 0.0552

20211006 6.0 0.0533

20211007 8.0 0.0512

20211008 10.0 0.05

20211009 20.0 0.045

20211010 40.0 0.0396

20211011 60.0 0.0365

20211012 80.0 0.0346

20211013 100.0 0.0331

20211014 200.0 0.0275

20258200

20258201

20258202

20258203

20258204

20258205

20258206

20258207

20258208

20258209

20258210

20258211

20258212

20258213

20258214

20258215

20258216

20258217

reac-t

1.0

1.0133

1.4327

1.9854

2.7013

3.614

4.76

6.188

7.92

10.027

12.551

15.549

19.077

23.198

27.976

33.478

39.776

0 1.0d 1.00d

0.0

0.0362

0.04815

0.06295

0.0808

0.102

0.1275

0.157

0.1915

0.2305

0.2755

03255

03815

0.4435

0.513

0.589

0.672

A7-55
20211015 400.0 0.0235

20211016 600.0 0.0211

20211017 800.0 0.0196

20211018 1000.0 0.0185

20211019 2000.0 0.0157

20211020 4000.0 0.0128

20211021 6000.0 0.0112

20211022 8000.0 0.0105

20211023 10000.0 0.00965

20211024 20000.0 0.00795

20211025 40000.0 0.00625

20211026 60000.0 0.00566

20211027 80000.0 0.00505

20211028 100000.0 0.00475

20515800 acmail integral 1. 0. 0

20515801 mflowj 732000000

20515900 acmail integral 1.0. 0

20515901 mflowj 950000000

.end of input deck - thank god!

A7-56
NRC FORM 23S US. NUCLEAR REGULATORY COMMISSION 1. REPORT NUMBER

NRCM 2- 110Z2nden=Nbr, Assgned by NRC. Add VoL, Supp.. Rev. =RC, 320 BIBLUOGRAPHIC DATA SHEET tar. .Mde.•.u Numb-.. ln.)

2. TITLE AND SUBTTLE NUREGAIA-0162

Test LOBI-BL06: Post-Test Analysis and RELAP5MOD3.2.1 Code Performance Assessment 3. DATE REPORT PUBLISHED

MONTH YEAR

April 1999

4. FIN OR GRANT NUMBER

D6227

5. AUTHOR(S) 6. TYPE OF REPORT

T. Fiore, P. Mars•i

7. PERIOD COVERED 1rhaiveOstn)

8. PERFORMING ORGANIZATION - NAME AND ADDRESS I1 ?Eproide Dfor Offae rRegion. U.S. XMR DRi and wearing eddmsa 2iracnr.

pmvide 12rne and *Ai •d.drss.)

Agenzia Nazionale per le Protezione dell' Ambiete (ANPA)

Via Vitaliano Brancati 48

00144 Roma, Italy

9. SPONSORING ORGANIZATION.- NAME AND ADDRESS (I`NRC, 4yp "Sane as *bove', Foniea<l, pmvkfe AR DiiokknO orr rReg.,% U.S. NuciwRegt*1ory Cornwdssk and rnwling address,)

Office of Nuclear Regulatory Research

U.S. Nuclear Regulatory Commission

Washington, DC 20555-0001

10. SUPPLEMENTARY NOTES

G. Rhee, NRC Project Manager

11. ABSTRACT 2o0 words or ks)

This report deals with the results of the "post-test analysis" of the test BL-06 performed in the LOB/MOD2 test fadlity. LOBI/MOD2

is an Integral test facMlity that represents, at approxdmately 1:712 scale, a four loop (KWU design, 1300 MWe) PWR. The test

BL-06 simulates a 1% cold leg break LOCA, with the main coolant pumps switched off very late in the transient The calculations

have been realized with the code RELAP5/MOD32.1. The uncertainty evaluation of the calculation result has been performed

using a specific method developed by Pisa University.

12. KEY WORDSIDESCRIPTORS (Lkt wadsropru esat ww a.&sit m.set•r= h:cr n = & t,) 1& AVALANLITY STATEMENT

LOBI Test BL-06 unlimited

Cold Leg SBLOCA 14. SECURITY CLASSm=TKON

RELAP5IMOD3.2.1 Assessment M POe)

LOBIUMOD2 FaciTrty unclassified

KWU 4 Loop Design Mb RPAV

unclassified

15. NUMBER OF PAGES

16. PRICE

NRC FORM 335 (240)


Federal Recycling Program

UNITED STATES

NUCLEAR REGULATORY COMMISSION

WASHINGTON, DC 20555-0001

SPECIAL STANDARD MAIL

POSTAGE AND FEES PAID

USNRC

PERMIT NO. G-67

OFFICIAL BUSINESS

PENALTY FOR PRIVATE USE. $300