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NUREG / CR-4380

ORNL-6226

Evaluation of the Motor-Operated

Valve Analysis and Test System

(MOVATS) to Detect Degradation,

Incorrect Adjustments, and

Other Abnormalities in

Motor-Operated Valves

3

J. L. Crowley

D. M. Eissenberg

\od Yd

5\£D Vit ens

Prepared for the U.S. Nuclear Regulatory Commission

Office of Nuclear Regulatory Research

Under Interagency Agreement DOE 40-551-75

OPERATED BY

MARTIN MARIETTA ENERGY SYSTEMS, INC.

FOR THE UNITED STATES

DEPARTMENT OF ENERGY
NOTICE

This report was prepared as an account of work sponsored by an

agency of the United States Government. Neither the United

States Government nor any agency thereof, or any of their

employees, makes any warranty, expressed or implied, or

assumes any legal liability or responsibility for any third party's

use, or the results of such use, of any information, apparatus

product or process disclosed in this report, or represents that its

use by such third party would not infringe privately owned

rights.

Available from

Superintendent of Documents

U.S. Government Printing Office

Post Office Box 37082

Washington, D.C. 20013-7982

and

National Technical Information Service

Springfield, VA 22161
NUREG/CR-4380

ORNL-6226

Dist. Category RV

Engineering Technology Division

EVALUATION OF THE MOTOR-OPERATED VALVE ANALYSIS AND TEST

SYSTEM (MOVATS) TO DETECT DEGRADATION, INCORRECT

ADJUSTMENTS, AND OTHER ABNORMALITIES

IN MOTOR-OPERATED VALVES

J. L. Crowley D. M. Eissenberg

Manuscript Completed - December 18,

Date Published - January 1986

1985

Prepared for the

U.S. Nuclear Regulatory Commission

Office of Nuclear Regulatory Research

Washington, DC 20555

Under Interagency Agreement DOE-40-551-75

NRC FIN No. B0828

Prepared by the

OAK RIDGE NATIONAL LABORATORY

Oak Ridge, Tennessee 37831

operated by

MARTIN MARIETTA ENERGY SYSTEMS, INC.

for the

U.S. DEPARTMENT OF ENERGY

under Contract No. DE-AC05-840R21400
iii

CONTENTS

Page

LIST OF FIGURES .. *..* ........................................ v

LIST OF TABLES ........... ...... .. s ..... ... *.. .. * ...... **..* vii

ABSTRACT ..... I.........................................1

1. INTRODUCTION ................ ....................... 1

2. BACKGROUND ................................. 3

2.1 Objective .g....... .......................... 3

2.2 ASWM Code Sect. XI Division 1 Requirements ........... 3

2.3 Valve Operability vs Operational Readiness ........... 4

3. APPLICATION OF THE MOVATS SYSTEM TO THE LIMITORQUE MOV .... 6

3.1 The Limitorque Motor Operator ..... ................... 6

3.2 Stem-Thrust Signature 7........................... 7

3.3 Switch Signatures .. .................................. 9

3.4 Motor-Current Signature .............................. 9

3.5 Signature Analysis ................................... 9

4. DEGRADATION, INCORRECT ADJUSTMENTS, AND OTHER

ABNORMALITIES IDENTIFIABLE BY MVATS ........ .............. 14

4.1 Bent Stem ............................................ 14

4.2 Gear Wear ............................................ 14

4.3 Motor Pinion Binding .......... ......... ......... ..... 14

4.4 Stem Wear ............................................ 14

4.5 Grease Hardening ..................................... 15

4.6 Motor Degradation ................ .................. .. 15

4.7 Excessive Inertia .................................... 15

4.8 Inadequate Stem Lubrication .......................... 16

4.9 Improper Seating .. ............ ....................... 16

4.10 Valve Backseating .................................... 16

4.11 Incorrect Torque Switch Calibration .................. 16

4.12 Unbalanced Torque-Switch ............................. 17

4.13 Excessive Spring-Pack Gap ............................ 17

4.14 Excessive Packing Tightness ...... .................... 17

4.15 Improperly Set Bypass Switch ...... ................... 17

4.16 Loose Stem-Nut Locknut ............... ................ 18
iv

Page

5. SUMMARY OF RESULTS ....... .. .. .......... ........ ... ....... 19

5.1 Analysis Summary ***.....*** ......................... 19

5.2 Statistical Summary ..... ...... ..... ................ 31

6. ANALYSIS AND CONCLUSIONS .................... .............. 33

6.1 Analyses of Abnormalities Found During Testing .... ... 33

6.2 MOVATS Capabilities in Providing Diagnostic

Information Regarding Operational Readiness *......... 34

6.3 MOVATS Limitations in Providing Diagnostic

Information Regarding Operational Readiness .......... 34

6.4 Conclusions ....*** .... **......*..*.* *35

REFERENCES ************************** .................. *36

APPENDIX A. STATEMENT OF WORK ...... .... . .... . * ...... .... . .... . 37

APPENDIX B. DETAILED SIGNATURE ANALYSIS REPORTS ............... 39
v

LIST OF FIGURES

Figure Page

3.1 Limitorque operator sizes SMB-O to SB-4 with some

parts identified ... . 6

3.2 Stem-thrust calibration fixture 8

3.3 Hypothetical close-to-open valve cycle as indicated by

the TD, the switch-position-indicating device, and the

motor current 10

3.4 Hypothetical open-to-close valve cycle as indicated by

the TMD, the switch-position-indicating device, and the

motor current 11
vii

LIST OF TABLES

Table

3.1 Interpretation of valve signatures in Figs. 3.3

and 3. 12

5.1 Summary of significant MOV abnormalities identified

by MOVATS ....... .......... ................ . . 32

6.1 Summary of abnormalities detectable by MOVATS

classified by type 33
EVALUATION OF THE MOTOR-OPERATED VALVE ANALYSIS AND TEST

SYSTEM (MOVATS) TO DETECT DEGRADATION, INCORRECT

ADJUSTMENTS, AND OTHER ABNORMALITIES

IN MOTOR-OPERATED VALVES

J. L. Crowley D. M. Eissenberg

ABSTRACT

As a part of the Nuclear Regulatory Commission Nuclear

Plant Aging Research Program, a field test program was carried

out to evaluate a technique of valve signature analysis to

detect and differentiate abnormalities, including timedependent egradation (aging) and incorrect adjustments in

motor-operated valves. he tec nique described in this report

is the Motor-Operated Valve Analysis and Test System (MOVATS),

which is commercially available from MOVATS, Inc. In-situ

signature traces were obtained on 36 motor-operated valves at

4 nuclear plant sites. Described are the test equipment package, method of obtaining the signatures, and determinations

made as a result of analyzing these signatures. Based on

evaluations of the signature-analysis technique and on the

results obtained from the field test program, the capabilities

and limitations of MOVATS are discussed.

1. INTRODUCTION

The Office of Nuclear Regulatory Research (RES) of the Nuclear Regulatory Commission (NRC) has instituted a Nuclear Plant Aging Research

(NPAR) Programl to carry out research aimed at increasing the understanding of the causes, consequences, and methods for mitigating the

effects of time-depnenfitegradation (agin3gl o nuc ear plant components

that are considered important to ensure safety. An important aspect of

the NPAR Program strategy is to demonstrate the utility of conditionmonitoring, signature-analysis, and other surveillance methods for detecting, differentiating, and trending various types of abnormalities in the

components so that corrective measures can be implemented prior to loss of

safety function. Oak Ridge National Laboratory (ORNL) is a contractor to

NRC, carrying out specific tasks in support of the NPAR Program, including

investigation of the sources of aging effects, abnormality characterization and identification, and evaluation of inspection and surveillance

monitoring methods for selected components.

This report documents the results of a field test program carried

out as part of ORNL's activities in support of the NPAR Program. The

field test program involves the evaluation of a signature-analysis method

for monitoring the health of motor-operated valves (MOVs), one of the

components under study at ORNL.
2

The technique tested, the Motor-Operated Valve Analysis and Test

System (MOVATS), was recently developed and is currently marketed by

MOVATS, Inc., of Marietta, Georgia. The tests were carried out by

MOVATS, Inc., under subcontract to Martin Marietta Energy Systems, Inc.

The results obtained are presented, essentially as received from the subcontractor, in Sect. 5 and Appendix B of this report.
3

2. BACKGROUND

ORNL has been investigating the aging of MOVs in nuclear power

plants as part of the NRC/RES NPAR Program. A Phase I study2 has been

completed recently that characterized time-dependent degradation and

failure modes and causes expected in MOVs in nuclear plant service based

on analyses of designs, maintenance practices, and operating experiences.

The study also identified potential parameters for detecting, differentiating, and trending the degradation expected to occur over the operating

life of the MOVs. It was learned during the course of this work that some

of these parameters could be monitored by the signature-analysis method

MOVATS.

A specific request was initiated by NRC Office of Nuclear Reactor

Regulation3 that a limited field test program of the MOVATS signatureanalysis technique be carried out to "learn exactly what [it] can provide

about safety related MOV operational readiness above and beyond the currently used ASME Section XI methods." It was in this context and with a

limited scope of work that a statement of work was prepared (Appendix A),

and a contract was awarded to MVATS, Inc. This report describes the

results of that field test program.

It is not the intent of this limited investigation to answer all

pertinent questions concerning the operational readiness of MOVs in nuclear power plants. It is expected that upon completion of the Phase II

study of MOVs as an element of the NRC/RES NPAR (Fig. B.7 in Ref. 1), a

comprehensive report will be issued on the operational readiness of MOVs.

2.1 Objective

The objectives of this test program were to

1. evaluate the capability of MOVATS to provide useful diagnostic information for determining the operational readiness of MOVs beyond that

currently provided by the ASME Code Sect. XI methods and

2. identify and characterize the types of abnormalities found in some

selected MOVs installed in nuclear plants utilizing the MOVATS technique.

Note that the MOVATS technique has been applied only to MOVs that

utilize Limitorgue operators manufactured bv the Limitorque Corporation.

Limitorque operators are current 'of the MOVs installed

in U.S. nuclear power plants.

2.2 ASWE Code Sect. XI Division 1 Requirements

Technical Specifications for both pressurized-water reactors (PWR)

and boiling-water reactors (BWR) require that surveillance testing of

safety-related MOVs be carried out in accordance with the provisions of

Article IWV-3000 of Sect. XI, Division 1, of the ASME Boiter and Pressure

VesseL Code.4
4

Under Article IWV-3000, category A and B valves* in nuclear plant

service are required to be tested after installation but prior to service;

after replacement, repair, or maintenance that could affect performance;

and periodically in service as specified. Three types of tests are

required: (1) valve position indicator verification, (2) valve evg'c4

inf. q~d (3) valve leak rate. However, because MOVATS does not address

either position indication or valve leakage, only the valve exercising

test will be discussed in this report.

The exercising test is expected to be performed every 3 months except

where other provisions are made. The tests that apply to MOVs (both categories A and B) involve two procedures that are carried out when the valve

is at its design conditions if possible:

1. exercising full stroke or part stroke to verify valve disk movement;

when movement is not verified, corrective action is initiated immediately and

2. exercising full stroke to measure stroke time; where stroke times are

measured to be >25% above the previous test, the test frequency is

increased to once per month until corrective action is taken. When

the stroke time exceeds the limiting stroke time specified by the

owner, corrective action is initiated immediately.

Other details of the test, exceptions to the procedures, and corrective actions are described in Article IWV-3000 of Ref. 4.

2.3 Valve Operability vs Operational Readiness

A component that is operable at a given point in time can be defined

as one that has been demonstrated by testing at that time to have met a

set of functional performance requirements under specified test conditions. Article IWV-3000 thus provides the basis for determining MOV

operability. Periodic repetition of the operability test demonstrates

continuing operability.

Operational readiness can be defined as the ability of a component,

as installed and maintained, to operate properly under all anticipated

operating conditions when called upon at any time in the future. Thus

operational readiness is an extrapolation of operability in two dimensions - time and operating conditions.

Operational readiness can be inferred to some extent from operability tests. A MOV that periodically passes the IWV-3000 tests has a

reasonable probability of being operable in the future under conditions

similar to the test conditions. However, components can degrade with

time and eventually fail under some operating conditions if not maintained properly. Operability tests as delineated in ASME Code Sect. XI

cannot predict future failures.

Operational readiness can be more directly predicted if the degradations or other abnormalities that lead to failures can be periodically

*These include all valves that are neither self-actuating (i.e.,

check valves) nor limited to only one actuation (i.e., rupture disks).
5

or continuously monitored and trended so that incipient defects can be

identified and interpreted and corrective action can be taken prior to

failure. Signature-analysis methods, such as OVATS, could provide the

basis for determining operational readiness, provided they cover the

range of degradations expected, and can provide sufficient quantitative

data so that the results can be trended and extrapolated.
6

3. APPLICATION OF THE MVATS SYSTEM TO THE LIMITORQUE MV

MOVATS is a portable signature-analysis device designed for use in

the field. The system acquires, stores, and performs calculations on instantaneous readings of the following motor-operator characteristic parameters obtained during a valve cycle at ambient conditions:

1. axial motion of the worm,

2. actuations of torque and limit switches, and

3. motor current.

To understand the relationship between these characteristics and MOV

abnormalities, a brief description is included of the Limitorque motor

operator and of the instrumentation package adopted by MOVATS for obtaining the three characteristic parameters.

3.1 The Limitorque Mbtor Operator

This brief summary of the workings of a Limitorque operator is keyed

to Fig. 3.1, a picture of Limitorque SMB-O to SMB-4 operators.

ORNL OWG85 4639 ETD

TP~

1 SPRING PACK

2. ELECTRIC MOTOR

I LIMIT SWITCH ASSEMBLY

4. TORQUE SWITCH ASSEMBLY

5. VALVE STEM

6. LOCKING NUT

7 WORM

8. WORM GEAR

9 STEM NUT

10. DRIVE SLEEVE

Fig. 3.1. Limitorque operator sizes SMB-O to SMB-4 with some parts

identified.
7

An electric motor (2)* rotates the worm (7) through a pinion and

gear. The worm is engaged with and drives a worm gear (8). The worm gear

is equipped with two lugs that can contact two similar lugs on the drive

sleeve (10). These are spaced about a half-turn apart so that when the

direction of the motor is reversed, there is approximately one-half revolution of lost motion before the lugs reengage. The reengagement causes

a "hammerblow" that provides added impulse to lift the valve obturator

out of its seat. Once the worm gear lugs are engaged, the drive sleeve

rotates the stem nut (9), which causes the stem to raise or lower the

obturator. In some gate valves the stem is fitted to the obturator with

a clearance so that it must move a fixed distance before the obturator

itself will move. This configuration can give rise to a second hammerblow, the magnitude of which may be greater than the first.

The torque transferred by the worm, which causes the worm gear to

rotate, also causes the worm itself to translate axially along the spline

of its shaft. This axially directed motion is limited by the counteracting thrust generated by compression of the spring pack (1) such that the

distance travelled by the worm is proportional to the torque being delivered to the worm gear.

The torque switch (4) is rotated mechanically, that is, through a

rack and pinion gear, by the axial movements of the worm. When a preset

amount of rotation occurs either in the opening or closing direction, the

torque switch will open, removing electric power from the motor.

The limit switch (3), usually consisting of two rotary switches, is

geared directly to the motor shaft so that it tracks valve stem position

and actuates one rotor at each of the preset valve positions of near

full-open and near full-closed. Generally, the torque switch is wired to

stop the motor in the closed position (i.e., torque seated valve), while

the limit switch is wired to stop the motor in the open position (i.e.,

limit open valve). The limit switch also provides an interval of bypass

around the torque switch during the hammerblow to prevent an interruption

of motor power if there is enough spring-pack deflection during hammerblow to open the torque switch. Other contacts on the limit switch are

used to actuate valve position lights in the control room or other remote

locations.

3.2 Stem-Thrust Signature

The basis for the MVATS system is the proportionality between the

thrust being delivered to the valve stem and the axial movement of the

worm to compress the spring pack. Thus, if the instantaneous axial

motion of the worm throughout a valve cycle was accurately monitored, a

stem-thrust signature would result. Abnormalities that affect stem

thrust, such as valve and/or operator binding, poor lubrication,jgear

wear, and stem damage potentially could be recognized-by examination of

the woirmmotion signature. To obtain a reading of worm axial motion, a

linear variable differential transformer is used in a device developed by

MOVATS called the thrust measuring device (TMD). To install the TMD on

*The numbers in parentheses refer to the key in Fig. 3.1.
8

the motor operator, the spring-pack dust cover is removed and the TMD

mounted so that its plunger maintains contact with the spring-pack preload

nut. With the TD installed and its output conditioned and connected to

a recording system, axial movement of the worm is converted into a voltage

output of the TMD. The spring pack, when originally installed in the

motor operator, is preloaded to some value specified by the vendor. As a

result, the amount of deflection of the spring pack (and the accompanying

TMD reading) will reflect only that thrust caused by torque exerted by the

worm on the worm gear that exceeds the spring-pack preload. Thus, a zero

worm deflection or TMD reading during cycling of the valve can represent

any thrust less than the spring-pack preload.

Although knowledge of the worm axial motion throughout the valve

cycle provides information regarding the valve and operator mechanical

condition, calibration of movement of the worm with the actual stem

thrust is needed to properly establish spring-pack preload and torqueswitch setpoints. To calibrate the spring-pack, a stem thrust calibration fixture (Fig. 3.2) developed by MVATS, Inc., is installed in place

ORNL OWG85 4640 ETO

I

-LOAD CELL

woHEAVY HEX NUTS

OPERATOR

VALVESTEM.

Fig. 3.2. Stem-thrust calibration fixture.
9

of the upper-bearing thrust cover. A load cell is mounted in the path of

the rising valve stem. With the TMD also installed, the valve is opened

electrically. As the rising valve stem contacts the load cell, the stem

load rises sharply, producing a corresponding worm motion. When the

values of worm motion are plotted against the load cell readings, the

slope of the resultant curve represents the spring-pack constant, given

either as pounds of stem thrust per inch of worm deflection or pounds of

stem thrust per volt of TMD output.

3.3 Switch Signatures

By means of a specially designed multicoil transformer device, a

single signature is generated that gives the exact times during the valve

cycle that the torque and limit switches actuate. By superimposing this

signature on the thrust signature, the exact points and loading conditions at which the various switches actuate are determined within the

valve cycle.

To install the switch-sensing circuit, MOVATS signal leads are

attached in series with the control circuit. An alternate technique is

available for monitoring the control-switch positions without lifting any

control circuit leads. However, this technique precludes observation of

the torque-switch actuation during part of the cycle.

3.4 Motor-Current Signature

In measuring this parameter, a clamp-on ammeter with analog output

is attached to the motor power lead either at the valve or the motorcontrol center. Changes in motor current provide a signature of degrading

mechanical or electrical conditions similar to that provided by springpack deflection.

3.5 Signature Analysis

Figures 3.3 and 3.4 are schematic representations of hypothetical

spring-pack deflections, switch actuations, and motor currents for closeto-open and open-to-close cycles of a normal MOV. Table 3.1 provides a

key to the signatures in Figs. 3.3 and 3.4.
10

ORNL-DWG 85-4642 ETD

z

0

-j

UUi

0

C-,

0

z

0

0n

0

C-)

I--

z

wUj

0

a

r0

TIME M

Fig. 3.3. Hypothetical close-to-open valve cycle as indicated by

the TMD, the switch-position-indicating device, and the motor current.

See Table 3.1 for explanation.
11

ORNL-DWG 85-4641 ETD

z

0

IULL

TST

U~~~~~~~~~~~~~~~~~

0 X

z

I0

z

C-)

-

- TIME

Fig. 3.4. Hypothetical open-to-close valve cycle as indicated by

the TMD, the switch-position-indicating device, and the motor current*

See Table 3.1 for explanation.
12

Table 3.1. Interpretation of valve signatures

in Figs. 3.3 and 3.4a

Thrust signature (measured as spring-pack deflection)

1. Spring-pack relaxation

The beginning worm position results from the stem thrust remaining

from the previous valve operation. As soon as the motor starts,

the spring pack relaxes, and the worm returns to its zero deflection condition. Because the spring pack is assisting the motor at

this time, this period is short.

2. Zero worm deflection

During this time interval the spring pack is in its zero deflection

position. The worm gear must make one-half of a revolution before

contacting the drive sleeve lugs. Meanwhile, the motor is accelerating to operating speed.

3. Hammerblow

This thrust transient can occur when the valve stem starts moving

and also when the valve stem initiates movement of the obturator

(in the case of some gate valves). Because the load on the stem

may be much greater in the closed position, the thrusts at hammerblow are usually greater in the close-to-open cycle. In this

example, the hammerblow is large enough to trip the torque switch

momentarily (see No. 10).

4. Running load

This is the thrust required to overcome packing and gear friction.

In this example, running load is greater than zero because springpack preload was less than running load. In many cases the reverse

is true, and the TMD output does not reflect running load; in other

words, it shows decreasing thrust.

5. Valve seating [open-to-close cycle only (Fig. 3.4)]

At this time in the open-to-close cycle, the valve obturator contacts the valve seat. Motion of the worm changes from all rotational to partly rotational and partly axial, resulting in the

slowing down of the stem as the spring pack is compressed.

6. Torque-switch-trip (TST)

The torque switch opens at its setpoint, shutting off power to the

motor [open-to-close cycle (Fig. 3.4)].
13

Table 3.1 (continued)

7. Total thrust

The total thrust is the maximum thrust produced by the valve operator at a given setting of the torque switch. This may include

inertia overshoot of the thrust above the torque-switch setpoint.

8. Available thrust

The available thrust is that portion of the total thrust useful for

seating the valve. It consists of the difference between the total

thrust of No. 7 and the running load of No. 4.

Switch signatures

The various switch positions as recorded by MOVATS are represented

by the width of the bar. In these examples, it is assumed that valve

operation is stopped by the torque switch on closing (Fig. 3.4) and by

the limit switch on opening (Fig. 3.3).

9. Both the bypass switch and the torque switch are closed. The bypass around the torque switch negates the momentary torque-switch

trip to accommodate the thrust from a hammerblow without tripping

the motor.

10. The torque switch opens momentarily as a result of the hammerblow.

The motor continues to run because the bypass (limit) switch is

closed.

11. The bypass switch opens just after the hammerblow, while the torque

switch remains closed. Any subsequent loads in excess of the

torque-switch setting will open the torque switch and shut down the

motor.

12. The limit switch opens and shuts down the motor.

Motor-current signature

13. The starting current for an induction motor is typically six to ten

times running current.

14. The hammerblow, if sufficiently large as it is in the close-to-open

example, may cause a momentary but measurable current increase, as

shown in Fig. 3.3.

aAdapted from MOVATS, Inc., information brochure.
14

4. DEGRADATION, INCORRECT ADJUSTMENTS, AND OTHER

ABNORMALITIES IDENTIFIABLE BY MOVATS

Abnormalities in motor-operated valves identified and differentiated

by the MOVATS method are classified into two types: (1) degradation of

valve parts that, if allowed to progress, can lead to MOV failure and

(2) incorrect adjustments or other abnormalities that either cause degradation of valve parts and, thus, ultimately MOV failure or that can directly cause MOV failure under some anticipated operating conditions. In

identifying and characterizing abnormalities based on the MOVATS method,

no distinction was made between the two types of abnormalities, although

from the standpoint of the NPAR Program, the former are of greater

interest.

4.1 Bent Stem

A bent stem is a degradation that can be recognized by a gradual

increase and/or decrease in the running load in both the close and open

directions that may also be reflected in the motor-current signature.

This degradation, if it becomes progressively worse, can result in

failure of the valve to complete its stroke because of premature torqueswitch trip.

4.2 Gear Wear

Gear wear is a degradation that can be identified in both the thrust

and motor-current signatures in the form of cyclic loading. When this

degradation is noted, the frequency of the cycling can identify the worn

gear.

Gear wear, if it progresses, can ultimately lead to failure of the

valve to operate if gear teeth break or wear to the point where torque

cannot be transferred between gears.

4.3 Motor Pinion Binding

Binding of the motor-pinion gear can be recognized by an erratic

motor-current signature that does not have a comparable thrust signature,

indicating that the degradation is occurring upstream of the worm. Binding, if it gets worse, can result in failure of the MOV to operate because of motor burnout or actuation of the thermal overload switch.

4.4 Stem Wear

Stem wear can be recognized by a nonuniform thrust signature. Typically, stem wear has not been noted in the motor-current signature.
15

Conclusive verification that stem wear is present either in the form of

worn threads or burrs is obtained by comparing a signature with that

taken in the opposite direction of valve operation. The degraded area

should be reflected in the opposite side of the signature when comparing

open and close cycles.

Stem wear, if it progresses, can lead to failure to operate because

of gear breakage or premature torque-switch trip.

4.5 Grease Hardening

Grease hardening can result from extended exposure of the grease to

elevated temperature or radiation environments-.The effect of grease -

hardening depends on where it occurs in the operator. Hardened grease in

the region between the motor and the worm gear can be detected by an increased motor current with no comparable change in stem thrust. On the

other hand, hardened grease in the spring pack can be detected as an

abnormally ign spring-pack constant.

'e consequence of progressive grease hardening in the gears can be

motor burnout. Grease hardening in the spring pack can lead to a broken

obturator or seat or a bent stem, resulting from the excess torque permitted by the abnormally high spring constant.

4.6 Motor Degradation

Motor bearing wear and changes in the electrical resistance characteristics of either the conductors or insulation can be detected as increased motor current without a comparable increase in stem thrust indi-

,cation. It may be difficult to differentiate this degradation from the

motor pinion gear wear. Motor degradation, if it worsens with time, can

lead to failure of the valve to operate because of motor failure or actuation of-the motor thermal overload switch.

4.7 Excessive Inertia

Excessive inertia can occur when the total thrust exceeds vendor

specifications for maximum thrust, even though the torque-switch setting

is correct. Excessive inertia arises because of the continuing inertial

movement of the obturator into the seat after torque-switch trip and is

more commonly seen when the valve is being tested at ambient conditions.

The excessive inertia is measured as the inertia overshoot, which is the

percentage by which the total thrust exceeds the thrust at torque-switch

trip.

Excessive inertia, if allowed to continue, can lead to progressive

degradation of valve parts, which in turn can cause valve failures. Degradations that can result from excessive inertia include bent stem and

deformed or broken valve seat.
16

4.8 Inadequate Stem Lubrication

Inadequate stem lubrication is reflected in the running load, showing up as a choppy and rough thrust signature. Because of the small magnitude of the peaks, this may not show up in the motor-current signature.

Inadequate stem lubrication can lead to degradation of the stem and

stem nut or, alternately, to premature torque-switch trip as a result of

increased running load.

4.9 Improper Seating

Improper seating involves either misalignment of the disk and seat

or discontinuities in the mating surfaces. A normal valve, upon seating,

will have a rapid linear thrust increase. Discontinuities in the measured

thrust during seating is indicative of binding either in the seating area

or the stem disk assembly.

Improper seating can lead to permanent deformation of the obturator

or seat and leakage through the valve.

4.10 Valve Backseating

Valves that are limit-opened and are incorrectly adjusted may contact the backseat either before or after the motor has been deenergized.

The thrust signature in the close-to-open cycle for this condition will

indicate an increase in thrust when there is backseat contact. Comparison with the limit-switch signature can determine whether improper limitswitch setting or inertia overshoot caused the backseating.

The effect of frequent backseating during normal valve operation can

be mechanical damage to the obturator or stem, leading to failure of the

valve to operate. Another potential degradation resulting from frequent

backseating during normal operation is damage to the obturator or seat

such that stem leakage cannot be temporarily reduced during plant operation by use of occasional backseating.

4.11 Incorrect Torque-Switch Calibration

The thrust delivered to the valve stem at a given torque-switch

setting may not correspond to that given in the manufacturer's specifications. This can be determined by direct comparison of stem thrust (as

calibrated using a load cell) and torque-switch setpoint.

Premature torque-switch actuation resulting from an incorrect calibration can result in failure of the valve to complete its stroke. An

abnormally high stem thrust caused by an incorrect calibration can lead

to valve obturator or seat damage, mechanical degradation of other operator or valve parts, thermal overload actuation, or motor burnout, resulting ultimately in failure of the valve to operate.
17

4.12 Unbalanced Torque Switch

Torque switches can be installed unbalanced so that at equal torqueswitch trip settings, the actual thrust setpoints in open and close

directions are not equal. This abnormality is detected by determining

from the stem thrust and control switch signatures the actual amount of

thrust that trips the torque switch in each direction. Comparison of the

movements in the open and close directions provides an indication as to

the magnitude of torque-switch unbalance.

The effect of an unbalanced torque switch is to permit the motor

operator to deliver more thrust in one direction than in the other. This

could lead to the same types of degradation or failures listed in Sect.

4.11.

4.13 Excessive Spring-Pack Gap

The preload on the spring pack is such that, when assembled in the

motor operator, no gap should exist between the spring pack and the

shoulder that holds it in place. The presence of a gap can be observed

in the thrust signature as an extension of the zero load condition.

Spring-pack gap can lead to premature torque-switch actuation (i.e.,

actuation at too low a value of stem thrust over that expected from the

torque-switch setting, which can result in a valve that fails to close

completely).

4.14 Excessive Packing Tightness

Excessive valve packing tightness appears as a cyclic variation in

the running load and also may appear in the motor-current signature. It

may be difficult to differentiate this abnormality from mechanical gear

wear without diagnostic testing, such as loosening or replacing packing.

Excessive packing tightness can, under some anticipated operating

conditions, lead to premature torque-switch actuation, resulting in failure of the valve to open or close completely.

4.15 Improperly Set Bypass Switch

The close-to-open limit switch is intended to provide bypass protection of the torque switch during hammerblow. An improperly set bypass

switch, which terminates the bypass too early in the stroke, can be detected by comparing the measured bypass actuation time with the hammerblow time as measured from either the motor-current or stem-thrust signatures. Note that the hammerblow magnitude may be much smaller during

(ambient) tests than under anticipated operating conditions. However,

the hammerblow time will be independent of operating conditions.

An improperly set bypass time can lead to failure of the valve to

open under some operating conditions.

A
18

4.16 Loose Stem-Nut Locknut

This abnormality can be identified from the thrust signature as a

period of time following the first hammerblow during which the running

load is very low or zero. Normally, following the first hammerblow, the

running load should reflect the force needed to raise or lower the stem;

however, if the stem-nut locknut is loose and the stem nut is free to

move axially, the movement will require minimal thrust.

If undetected, a loose stem-nut locknut can gradually rotate away

from its normal position adjacent to the stem nut, allowing the stem nut

(rather than the stem) to displace during valve actuation. At some

point, if the locknut rotates off the stem, the stem can become unconstrained, rendering the valve inoperative.
19

5. SUMMARY OF RESULTS

5.1 Analysis Summary

This section describes the history and significant abnormalities

identified for each valve tested essentially as provided by MOVATS, Inc.

In some instances the abnormality was identified wholly or in part by

visual inspection concurrent with the MOVATS testing. A more complete

description of the abnormalities found for each valve is included in

Appendix B.

Valve No. 1

Valve Type: 12-in. gate

Operator Type: SMB-1

Safety Related: No

Plant Type: PWR

History. No significant prior mechanical or electrical problems

existed with this valve other than adjustments to the limit switch, which

were made in October 1984 because of valve leakage. When the leakage was

noted, it was found that an additional 9.5 turns of the handwheel were

required to completely close the valve following motor operation.

Signature-analysis findings. Analysis of the time between the initial hammerblow loading condition and the actual unseating of the valve

suggested that the tem-nut locknut had loosened. This condition was

confirmed by removal of the stem guard pipe and performance of a visual

inspection of the locknut. The locknut was found to have loosened -0.8

in. This condition could explain the incomplete closure condition noted

on this valve in October 1984. The result of a loosened locknut would be

a delay in actual movement of the stem during initial motor operation.

The limit switch gear train, however, would still operate as the motor

turned.

The torque switch was out of balance by a factor of 3 to 1. This

condition immediately negates any correlation of torque-switch settings

to actual delivered thrust or operator output torque.

Valve No. 2

Valve Type: 12-in. gate

Operator Type: SMB-1

Safety Related: No

Plant Type: PWR

History. No significant prior mechanical or electrical problems.

Signature-analysis findings. This valve is a duplicate of Valve

No. 1. Analysis of the thrust and switch signatures showed that the

close-to-open bypass switch was opening prior to the valve unseating.
20

This situation can lead to an inability to unseat the valve under some

conditions.

Valve No. 3

Valve Type: 12-in. gate

Operator Type: SMB-1

Safety Related: No

Plant Type: PWR

History. As with Valve No. 1, this valve required adjustment of the

close limit switch in October 1984 because the valve was leaking when

closed electrically from the control room.

Signature-analysis findings. This valve is a duplicate of Valve

Nos. 1 and 2. The thrust and control switch signatures showed that a

large gap existed between the stem nut and locknut, a circumstance indicative of a loose locknut. Inspection of the locknut revealed that it

had backed off 3/4 in. and was significantly loading the stem guard pipe

to the point where a 5-ft pipe wrench was required to remove the guard

pipe.

Analysis of the thrust and switch signatures showed that the closeto-open bypass switch was opening prior to the valve unseating. This

situation can lead to an inability to unseat the valve under some conditions.

Valve No. 4

Valve Type: 4-in. gate

Operator Type: SMB-0O

Safety Related: Yes

Plant Type: PWR

History. Valve has not exhibited any unusual mechanical or electrical problems in the past.

Signature-analysis findings. A significant cyclic loading condition

that is indicative of abnormality either in the worm gear or drive sleeve

alignment or of an excessive packing load was found.

Valve No. 5

Valve Type: 6-in. gate

Operator Type: SMB-00

Safety Related: Yes

Plant Type: PWR

History. This is a steam bleed throttling valve. The only problem

noted in the past with this valve has been failure to provide leak-tight

shutoff. Historically, steam cutting of the seat has been noted.
21

Signature-analysis findings. Thrust signatures showed that if the

control switch was released at the control panel immediately upon receipt

of the closed light indication, the valve would not hit the seat. Thus,

complete closure of the valve was dependent upon the technique the operator used at the control switch. If the switch was held in the closed

position beyond the time that the closed indication was received, then

the valve would close. Therefore, there could be occasions when the

valve was thought to be shut by the operators in the control room when,

in fact, it was not. Because the disk was almost in contact with the

seat in these cases, steam cutting of the valve seat area could occur.

Valve No. 6

Valve Type: 6-in. gate

Operator Type:. SB-OO

Safety Related: Yes

Plant Type: PWR

History. Same as Valve No. 5.

Signature-analysis findings. Same as for Valve No. 5 regarding the

incomplete closure condition.

Examination of the thrust signatures showed that this valve clearly

had a significant loosening of the locknut. Inspection of the operator

by plant maintenance personnel showed that the locknut had, in fact, completely loosened and was exerting a significant force on the valve stem

guard pipe.

Valve No. 7

Valve Type: 18-in. gate

Operator Type: SMB-2

Safety Related: No

Plant Type: PWR

History. The maintenance history of this MOV is not available.

Signature analysis findings. The as-found torque-switch settings

caused the operator to develop thrust in excess of the Limitorque-designated maximum in both directions. This condition poses the possibility

of damage to the valve and/or operator, rendering the MOV inoperable.

The torque switch was out of balance by a factor to 2.5 to 1. This

condition negates the assumption that the same torque-switch settings for

both directions will cause the operator to deliver equal thrusts during a

torque switch trip condition.

The close-to-open bypass switch was opening before the valve had

unseated, which can lead to the inability of the operator to unseat the

valve under some flow conditions.

.J
22

Valve No. 8

Valve Type: 6-in. gate

Operator Type: SMB-OO

Safety Related: Yes

Plant Type: PWR

Histoy. No maintenance history is available.

Signature-analysis findings. The as-found torque-switch settings

caused the operator to develop thrust in excess of the Limitorquedesignated maximum. This condition presents the possibility of damage to

the valve and/or operator.

The close-to-open bypass switch was opening before the unseating of

the valve, which can lead to the inability of the operator to unseat the

valve under a flow condition.

Valve No. 9

Valve Type: 6-in. gate

Operator Type: SMB-OO

Safety Related: Yes

Plant Type: PWR

History. This operator had the tripper fingers replaced in October

1983; the valve stem packing was replaced in January 1984.

Signature-analysis findings. The as-found torque-switch settings

caused the operator to develop thrusts in excess of the Limitorquedesignated maximum in both directions. This condition presents the

possibility of damage to the operator and/or valve. The settings were

adjusted to achieve calculated thrusts at torque-switch trip.

The close-to-open bypass switch was opening before the unseating of

the valve, which can lead to the inability of the operator to unseat the

valve under a flow condition.

Valve No. 10

Valve Type: 20-in. gate

Operator Type: SB-3

Safety Related: Yes

Plant Type: PWR

History. This operator was installed in 1979, the torque switch was

replaced in August 1981, and packing was replaced in October 1984.

Signature-analysis findings. The torque-switch settings were changed

to achieve the thrust at torque-switch trip values calculated by the

technical functions department of this facility.

The torque switch was out of balance by a factor of 2 to 1. This

condition negates the assumption that the same torque-switch settings for
23

both directions will cause the operator to deliver equal thrusts during a

torque-switch trip condition.

There was a localized binding of the valve stem noted at the beginning of the open-to-close cycle.

Valve No. 11

Valve Type: 20-in. gate

Operator Type: SB-3

Safety Related: Yes

Plant Type: PWR

History. This operator was replaced in 1979. No significant electrical or mechanical problems were documented.

Signature-analysis findings. The torque switch was out of balance

by a factor of 2.2 to 1. This condition negates the assumption that the

same torque-switch settings for both directions will cause the operator

to deliver equal thrusts during a torque-switch trip condition.

The close-to-open bypass switch was opening before the unseating of

the gate. This can lead to the inability of the operator to unseat the

valve under a flow condition if the hammerblow thrust exceeds the torqueswitch setting.

The open torque-switch setting was changed to achieve the specified

thrust value at torque-switch trip.

Valve No. 12

Valve Type: 12-in. gate

Operator Type: SMB-3

Safety Related: No

Plant Type: PWR

History. No maintenance history is available.

Signature-analysis findings. The torque-switch settings were

changed to achieve calculated thrust at torque-switch trip.

The torque switch was significantly out of balance, negating the

assumption that the same torque-switch settings in both directions will

cause the operator to deliver equal thrusts during a torque-switch trip

condition.

Valve No. 13

Valve Type: 6-in. gate

Operator Type: SMB-O

Safety Related: Yes

Plant Type: PWR

History. The starter button closing contacts were replaced in

November 1983.
24

Signature-analysis findings. The close-to-open bypass switch was

opening before valve unseating. This can lead to the inability of the

operator to unseat the valve under a flow condition.

The torque-switch settings were changed to allow the operator to

deliver calculated thrusts under a torque-switch trip condition.

The torque switch was out of balance, negating the assumption that

the same torque-switch settings will cause the operator to deliver equal

thrusts in both directions at torque-switch trip.

Valve No. 14

Valve Type: 6-in. gate

Operator Type: SMB-O

Safety Related: Yes

Plant Type: PWR

History. The motor was replaced in December 1983 and May 1976. In

November 1983 the operator was unable to unseat the valve. This was

attributed to the gate being in the seat during cooldown and becoming

pinched through contraction of the valve body. (Note: this is a dc

throttle valve with no seal-in" in the control circuit.)

Signature-analysis findings. The close-to-open bypass switch was

opening well before unseating of the valve. This can lead to the

inability of the operator to unseat the valve under some flow conditions.

The torque-switch settings were changed to allow the operator to

deliver calculated thrust values under a torque-switch trip condition.

Valve No. 15

Valve Type: 4-in. gate

Operator Type: SB-00

Safety Related: No

Plant Type: PWR

History. The valve stem packing was replaced in October 1983. The

torque switch was replaced in August 1981.

Signature-analysis findings. The torque-switch settings were

changed to allow the operator to deliver calculated thrusts under a

torque-switch trip condition.

Valve No. 16

Valve Type: 12-in. gate

Operator Type: SMB-O

Safety Related: Yes

Plant Type: PWR

History. No history is available.
25

Signature-analysis findings. This valve was found to be moderately

backseating, which can cause damage to the upper part of the gate and the

valve bonnet and wear on the stem-to-gate connection.

The torque-switch setting was changed to allow the operator to develop calculated thrusts under a torque-switch trip condition.

The close-to-open bypass switch was opening before valve unseating.

This could lead to the inability of the operator to unseat the valve

under some flow conditions.

Valve No. 17

Valve Type: 18-in. gate

Operator Type: SMB-1

Safety Related: No

Plant Type: PWR

History. Operator was removed and disassembled. Inspection revealed a loose wormshaft-bearing locknut. The bearing was replaced, and

the operator was reassembled and greased in October 1984.

Signature-analysis findings. The close-to-open bypass switch was

opening before valve unseating. This can lead to the inability of the

operator to unseat the valve under some flow conditions.

The torque switch was found to be out of balance, negating the

assumption that the same torque-switch settings will cause the operator

to deliver equal thrusts under a torque-switch trip condition.

It was observed that the torque-switch limiter plate was not installed on this operator. Normally installed by Limitorque, this limiter

plate prevents setting the torque switch at a valve sufficiently high to

cause valve or operator damage.

The torque-switch settings were changed to allow the operator to

develop calculated thrust values under a torque-switch trip condition.

Valve No. 18

Valve Type: 18-in. gate

Operator Type: SMB-1

Safety Related: No

Plant Type: PWR

History. No major electrical or mechanical maintenance has been

documented.

Signature-analysis findings. The close-to-open bypass switch was

opening before valve unseating. This can lead to the inability of the

operator to unseat the valve under some flow conditions.

The torque switch was out of balance, negating the assumption that

equal thrusts at torque-switch trip would be delivered with equal torqueswitch settings.

Torque-switch settings were changed to allow the operator to deliver

calculated torque-switch trip thrust values.
26

Valve No. 19

Valve Type: 12-in. gate

Operator Type: SMB-O

Safety Related: Yes

Plant Type: PWR

History. No major mechanical or electrical maintenance has been

documented.

Signature-analysis findings. The torque switch was out of balance

by a factor of 2.3 to 1, negating the assumption that equal thrusts at

torque-switch trip will be delivered with equal torque-switch settings.

The torque-switch settings were changed to allow the operator to

develop calculated thrusts under a torque-switch trip condition.

Valve No. 20

Valve Type: 12-in. gate

Operator Type: SMB-O

Safety Related: Yes

Plant Type: PWR

Histor No major mechanical or electrical maintenance has been

documted.

Signature-analysis findings. This valve was generating excessive

thrust during backseating, causing damage to the stem-to-valve connection, the upper portion of the gate, and the valve bonnet.

This valve exhibits an abnormality in the thrust signature that is

apparently traceable to the valve guide.

Valve No. 21

Valve Type: 12-in. gate

Operator Type: SMB-3

Safety Related: Yes

Plant Type: PWR

History. Maintenance history of this MOV is not available.

Signature-analysis findings. The close-to-open bypass switch was

opening before the valve had unseated. This can lead to the inability of

the operator to unseat the valve under some flow conditions.

The torque switch was out of balance by a factor of 1.2 to 1. This

condition negates the assumption that the same torque-switch settings for

both directions will cause the operator to deliver equal thrusts upon a

torque-switch trip condition.
27

Valve No. 22

Valve Type: 1.5-in. gate

Operator Type: SB-00

Safety Related: Yes

Plant Type: PWR

History. Maintenance history for this MOV is not available.

Signature-analysis findings. The motor-current signatures indicate

an excessive or unbalanced force exerted on the operator by stem packing.

Valve No. 23

Valve Type: 12-in. gate

Operator Type: SMB-3

Safety Related: Yes

Plant Type: PWR

History. This MOV had the motor bearings replaced in 1976. The

valve itself was overhauled because of leaking past the seal in November

1983.

Signature-analysis findings. The torque switch was out of balance

by a factor of 2.1 to 1. This condition negates the assumption that the

same torque-switch settings for both directions will cause the operator

to deliver equal thrusts during a torque-switch trip condition.

- Torque-switch settings were changed to allow the operator to deliver

calculated torque-switch trip thrust values.

Valve No. 24

Valve Type: 1-in. globe

Operator Type: SMB-OOO

Safety Related: Yes

Plant Type: PWR

History. No significant mechanical or electrical maintenance has

been documented.

Signature-analysis findings. The torque-switch settings were

changed to allow the operator to deliver calculated torque-switch trip

thrust values.

Valve No. 25

Valve Type: 14-in. gate

Operator Type: SMB-2

Safety Related: Yes

Plant Type: PWR
-----

28

History. This is a high-speed valve with a motor brake installed to

reduce the effects of inertia and the tendency of some high-speed valves

to rebound out of the seat.

The valve stem was repacked in 1979; the packing was tightened in

1981 and 1983 because of leaks.

Signature-analysis findings. The torque-switch settings were

changed to allow the calculated torque-switch trip thrust values to be

achieved.

The close-to-open bypass switch was opening before the valve had

unseated. This can lead to the inability of the operator to unseat the

valve under some flow conditions.

The torque switch was out of balance by a factor of 1.73 to 1. This

condition negates the assumption that the same torque-switch settings for

both directions will cause the operator to deliver equal thrusts during a

torque-switch trip condition.

The excessively tightened packing causes a high running load that

subtracts from the thrust available to close the valve.

Valve No. 26

Valve Type: 2.5-in. gate

Operator Type: SMB-00

Safety Related: Yes

Plant Type: PWR

History. This is a block valve designed to use a limit switch to

stop valve travel in both directions, with torque-switch protection also

in the control circuit.

The valve stem packing was replaced in December 1983.

Signature-analysis findings. The close limit switch was opening

before the gate contacted the seat. There was no stem thrust into the

seat - clearly an undesirable condition.

The close-to-open bypass switch was opening before the valve had

unseated. This can lead to the inability of the operator to unseat the

valve under some flow conditions.

Valve No. 27

Valve Type: 2.5-in. gate

Operator Type: SMB-0O

Safety Related: Yes

Plant Type: PWR

Histoy This is a block valve. The disk was reworked in February

1983, and the torque switch and limit switch assembly/wiring were replaced

in April 1984 and February 1982, respectively.

Signature-analysis findings. This valve exhibits a loading condition

that may correspond to operator gear wear.
29

Valve No. 28

Valve Type: 2.5-in. gate

Operator Type: SMB-00

Safety Related: Yes

Plant Type: PWR

History. This MOV had the torque switch and the limit switch assembly replaced in December 1983. The valve stem packing was replaced in

September 1981.

Signature-analysis findings. The close-to-open bypass switch was

set to open too long after gate unseating. This removed the protective

torque switch from the circuit for an undesirably long fraction of the

operating cycle. Should an obstruction have occurred, the motor could

have gone to a locked rotor condition.

Valve No. 29

Valve Type: 16-in. gate

Operator Type: SB-O

Safety Related: No

Plant Type: PWR

History. No significant prior mechanical or electrical problems.

Signature-analysis findings. The close-to-open bypass switch was

actuating prior to the unseating of the disk. This can lead to the inability of the operator to unseat the valve under some flow conditions.

There appears to be a slight galling condition in the close-to-open

direction toward the end of the valve guides.

Valve No. 30

Valve Type: 8-in. gate

Operator Type: SMB-O

Safety Related: Yes

Plant Type: PWR

History. Bonnet gasket replaced; limits reset because of a steam

leak in April 1981. Valve repacked because of packing leak in May 1983

and July 1983.

Signature-analysis findings. The close-to-open bypass switch was

actuating prior to the unseating of the disk. This can lead to the inability of the operator to unseat the valve under some flow conditions.
30

Valve No. 31

Valve Type: 4-in. gate

Operator Type: SMB-00

Safety Related: Yes

Plant Type: PWR

History. The valve was disassembled and the packing reworked because of a steam leak at either the packing or the bonnet in April 1981.

Valve operability was checked in July 1981, because it "torqued out" before going closed. A lantern ring was installed upside down, then reinstalled, and the valve repacked in June 1981 and again in July 1983. The

valve was repacked in July 1983. The valve was stroked, and the housing

was inspected for cracks in July 1981.

Signature-analysis findings. The close-to-open bypass switch was

actuating prior to the unseating of the disk. This can lead to the inability of the operator to unseat the valve under some flow conditions.

The valve was coasting into the backseat after the open limit switch

had actuated. Most valve backseats are not designed for this type of

loading condition.

Valve No. 32

Valve Type: 12-in. gate

Operator Type: SMB-1

Safety Related: No

Plant Type: PWR

History. No significant prior mechanical or electrical problems.

Signature-analysis findings. The close-to-open bypass switch was

actuating prior to the unseating of the disk. This can lead to the inability of the operator to unseat the valve under some flow conditions.

Valve No. 33

Valve Type: 12-in. gate

Operator Type: SMB-i

Safety Related: No

Plant Type: PWR

History. No significant prior mechanical or electrical problems.

Signature-analysis findings. The close-to-open bypass switch was

actuating prior to the unseating of the disk. This can lead to the inability of the operator to unseat the valve under a flow condition.

Unusual seating and unseating thrust signatures that may have been

caused by grease packed in the spring cartridge cap were noted.
31

Valve No. 34

Valve Type: 24-in. gate

Operator Type: SMB-4

Safety Related: No

Plant Type: PWR

History. Motor was removed to allow a new pinion key to be installed

in July 1981. Bonnet bolts were retorqued to 45,000 psi bolt stress in

April 1982. The valve was Furmanited and the rings were repaired in June

1982.

Signature-analysis findings. Water was present in the spring-pack

cavity when the MOVATS spring cartridge cap was installed.

Valve No. 35

Valve Type: 16-in. gate

Operator Type: SMB-O

Safety Related: No

Plant Type: PWR

History. No significant prior mechanical or electrical problems.

S~inature-analysis findings. In the absence of bypass protection,

the torque switch actuated, causing the valve to trip during the initial

close-to-open stroke. The close-to-open bypass switch was adjusted to

properly cover the unseating of the disk.

Valve No. 36

Valve Type: 10-in. gate

Operator Type: SMB-O

Safety Related: Yes

Plant Type: BWR

History. The maintenance history of this MOV is not available.

Signature-analysis findings. This MOV exhibits severe loading conditions in the operator. Signatures indicate the following possibilities:

(1) the worm gear is not moving freely on the drive assembly and (2) the

worm shaft bearing locknut is loose..

The thrust signatures indicate the existence of a spring-pack gap,

which has the effect of reducing the load at torque-switch trip for any

particular torque-switch setting.

5.2 Statistical Summary

Table 5.1 is a summary of the significant abnormalities detected and

the percentage of the valves displaying that particular abnormality
32

Table 5.1. Summary of significant MOV

abnormalities identified by MOVATS

Abnormality Percenta

Improperly set bypass switch 75

Incorrect torque-switch 50

calibration

Unbalanced torque switch 33

Excessive spring-pack gap 17

Excessive packing tightness 8

Excessive inertia 8

Loose stem-nut locknut 8

Valve backseating 8

Steam wear 8

Grease hardening 8

Gear wear 6

£3 Motor degradation 3

Izzn i\ Miscellaneous abnormalities 35

*Bw aThe percentages shown in this table are

based on a limited sampling of valves available for use in this test program. As a result, the values should be considered as in9j'tj < dicators of frequency of occurrence of the jg listed abnormalities rather than absolute

measures applicable generally to all MOVs.

arranged in order of decreasing frequency. Note that some of the observed abnormalities involving stem thrust load conditions could only be

determined if a calibration of the spring pack is performed. Because

calibrations were obtained only on selected valves, the percentage of

occurrences for those particular abnormalities was based on those valves

that were calibrated.
33

6. ANALYSIS AND CONCLUSIONS

In this section the results of the 36 valve tests are analyzed to

conclude what the MVATS signature-analysis method provides regarding MOV

operational readiness. Note that all of the valves included in this study

were considered operational by the utility at the time of the MOVATS test.

6.1 Analyses of Abnormalities Found During Testing

The MOVATS test method utilized three signatures (stem thrust measured as axial worm movement, motor current, and switch actuation times)

taken during an MOV cycle to detect and differentiate among abnormalities

present in the MOVs. A characterization of each of the abnormalities

detectable by the MOVATS method, including six that could be identified

as time-dependent degradations (aging relatd ~and ten that could bie

c aracterized as norrectadjustments or other abnormalities, is given

in Sect. 4. Of the latter, six could also be considered as the type of

abnormalities that could cause valve failure under some anticipated

operating conditions. These results are given in Table 6.1.

An examination of the statistics of the MOVATS test results (Table

5.1) shows that nearly all of the abnormalities detectable by the MOVATS

method were, in fact, observed during the tests in one or more of the

Table 6.1. Summary of abnormalities detectable

by MOVATS classified by type

Time-dependent Incorrect adjustments and

degradations other abnormalities

Bent stem Z Excessive inertia

Gear wear i Inadequate stem lubrication

Motor pinion binding t Improper seating

Stem wear Valve backseating

Grease hardening 8 Incorrect torque-switch calibrationa

Motor degradation 3 Unbalanced torque switcha

Excessive spring-pack gapa

Excessive packing tightnessa

Improperly set bypass switcha

Loose stem-nut locknuta

aAbnormalities that can cause valve failure under some

anticipated operating conditions.
34

valves. The abnormalities included both time-dependent degradations and

incorrect adjustments. In no case was the magnitude of the abnormality

sufficiently large enough to have been noted during previous routine

surveillance testing, however.

Note that the three most common abnormalities involved incorrect

adjustments of the torque and limit switches. The most frequently observed abnormality was an improperly set bypass (limit) switch, occurring

in 75% of the valves tested. All three of these commonly occurring abnormalities could, under some conditions, cause failure of the valve to

operate.

6.2 MOVATS Capabilities in Providing Diagnostic

Information Regarding Operational Readiness

As defined in Sect. 2.3, operational readiness is the ability of a

component as installed and maintained to operate properly when called upon

at any time in the future under all anticipated operating conditions. The

MOVATS method, which detected the incorrect adjustments that can cause

valve failures under some anticipated operating conditions, thus provided

diagnostic information that indicated specific valves that, although operable, may not have been in a state of operational readiness.

The MOVATS method also detected, and to some extent determined the

magnitude of, various time-dependent degradations present in MVs. Although it is not possible to determine operational readiness based on a

single measurement of the extent of degradation, the MOVATS method, if

utilized periodically during successive outages, could provide diagnostic

information useful for determining operational readiness with regard to

those degradations detectable by the MOVATS method.

6.3 MOVATS Limitations in Providing Diagnostic

Information Regarding Operational Readiness

Although the MOVATS method was found to be capable of detecting many

abnormalities in MOVs, it cannot be assumed capable of detecting all

abnormalities that can cause MOV failures. The limitations in that regard

are of two types:

1. Degradation that cannot be detected or differentiated using the three

signatures obtained by MOVATS, including, for example, valve leakage,

motor overheating, loose fasteners, and cracked or corroded gears,

shafts, or other mechanical parts where the part is still geometrically intact.

2. Degradation that cannot be detected or trended by tests carried out

at shutdown (ambient) conditions, including, for example, degradations of the obturator, seat, or stem that show up as increased running load only when there is a pressure differential across the obturator or an elevated pressure or temperature in the valve body.
35

A second limitation of the MOVATS method is the requirement that it

be installed and removed manually for each valve tested. This can result

in excessive radiation exposures to the technicians carrying out the

tests in some instances. It also limits the number of valves that can be

practically monitored during a given outage.

6.4 Conclusions

Based on the field tests carried out as part of this program and on

an analysis of the capabilities and limitations of the MOVATS method, the

following conclusions appear justified:

1. The MOVATS method can provide valuable diagnostic information regarding the operational readiness of MVs well beyond that obtainable

from ASM Code Sect. XI type surveillance tests.

2. The field tests carried out as part of this task demonstrated that

incorrectly adjusted bypass and torque switches are extremely conmon. Both o these abnormalities, but particularly the incorrectly

ajusted bypass switch, can directly affect MOV operational readiness.

3. The MOVATS method can provide useful diagnostic information regarding

time-dependent degradation (aging) of MOV parts. However, to use

that information in determining operational readiness, the method

must be applied periodically, and trending data must be obtained from

which operability into the future can be extrapolated.

4. The MOVATS method has limitations with regard to its ability to detect all abnormalities and to its convenience. Neither limitation,

however, affects its ability to provide diagnostic information regarding MOV operational readiness beyond that obtained using the ASME

Code Sect. XI tests.
36

REFERENCES

1. U.S. Nuclear Regulatory Commission, Nuclear Plant Aging Research

(NPAR) Program Pan, NUREG 1144, July 1985.

2. W. L. Greenstreet, G. A. Murphy, and D. M. Eissenberg, Aging and

Service Wear of Electric Motor-Operated Valves Used in Engineered

Safety-Feature Systems of Nuclear Power Plants, NUREG/CR-4234, Vol. 1

(ORNL-6170/V1), Martin Marietta Energy Systems, Inc., Oak Ridge Natl.

Lab., June 1985.

3. H. R. Denton, Office of Nuclear Reactor Regulation, U.S. Nuclear

Regulatory Commission, Washington, D.C., memorandum to R. B. Minogue,

Office of Nuclear Regulatory Research, U.S. Nuclear Regulatory Commission, May 14, 1984.

4. ASME Boiler and Pressure Vessel Code. An American Standard,

ANSI/ASME BPV-11-1, American Society Mechanical Engineers, New York,

1983.
37

Appendix A

STATEMENT OF WORK

FIELD INVESTIGATION TO IDENTIFY DEFECTS AND SERVICE WEAR

IN OPERATIONAL MOTOR-OPERATED VALVES IN

NUCLEAR POWER PLANTS

Objective

Using valve signature-analysis techniques, determine the general

condition of a representative sample of operational MOVs at nuclear power

plants. Characterize the defects and/or service wear diagnosed by signature analysis and suggest maintenance actions, if any.

Method of Accomplishment

1. Obtain the cooperation of one or more utilities in making available

for signature analysis operational MOVs in operational (preferably

older) nuclear power plants. The valves should include as many MOVs

as possible from safety-related systems, and their prior operating

and maintenance histories should be available.

2. Develop and submit for approval a test procedure based on MOVATS

technology for both obtaining valve-operator signatures and diagnosing valve and/or operator defects and service wear during both opening and closing cycles based on the signatures obtained. The test

procedure dealing with diagnosis should include acceptance and/or

rejection criteria for each defect and/or service wear identified.

3. Using the test procedure, obtain valve signatures using MOVATS equipment for a total of 40 valves. Analyze data for each valve to obtain a diagnosis of defects and service wear. Based on the acceptance/rejection criteria, identify remedial actions, if any, for each

valve where defects and/or service wear are identified. Whenever

possible, an independent verification of actual defect, degradation,

or service wear will be obtained and documented. In those cases

where remedial action is accomplished during the period of testing, a

second set of diagnostic data should be taken and analyzed following

completion of remedial action.

4. Prepare monthly status reports plus a final report giving the results

of the task in terms of the statistics of defects and service wear

identified and of the recommended remedial action.
39

Appendix B

DETAILED SIGNATURE ANALYSIS REPORTS

Comment

The following motor-operated valve analyses are presented essentially as received from MOVATS, Inc. Codes 1 through 4 are used by MOVATS

to designate the level of importance of their findings; Code 1 is of the

highest importance and Code 4 the lowest. These assignments of code level

were subjective on the part of MOVATS, Inc., and have no relationship to

any other system.

If the valve test reports are examined closely, it will be apparent

that sometimes the plot information does not substantiate the comments.

The reason for this is that the conclusions were reached by viewing the

data on a storage oscilloscope while the plots included here were formed

on an x-y plotter. Although both methods used the same basic data, the

x-y plotter cannot match the oscilloscope for revealing the fine structure.
Test I.D. Valve #1

Code Comments

I The thrust signatures show that the

potential for a loosened stem nut

locknut exists. (See Recommendation

#1).

4 The torque switch was found to be out of

balance by a factor of 2.94 to 1.0.

(See Recommendation #2).

Recommendations

1. We recommend that the following actions be taken to visually determine

if the locknut is in fact loosened:

a. Operate the valve to a mid-position by opening the valve.

b. Remove the stem guard pipe if one exists.

c. Once the guard pipe is removed, visually inspect the locknut to

determine if it has backed itself out.

d. Please note also that if the locknut is found to be loose,

readjustment to the correct position will result in the limit,

bypass, and light indication switches being improperly positioned.

2. An open torque switch setting of 1.0 resulted in the actuator

developing approximately 4300 pounds of thrust, while a close torque

switch setting of 1.0 resulted in approximately 12,700 pounds of

thrust. This data should be considered should it become necessary to

change torque switch settings in the future without the use of the

MOVATS Series 2000 System.
41

TEST ID: VALVE #1

SYSTEM

SYSTEM : N/A

FLOW : 0

TEMP : AMBIENT

PRESS : ATMOSPHERIC

SFTY REL ': N/A

OPERATOR

TYPE : SMB

SIZE I

SERIAL NO. : 100817

ORDER NO. : 336591A

ORIENTATION: HORIZONTAL

ELECTRICAL VALVE

CONTROL CIP VOLTS:

AC/DC I

OPEN CONTROL

CLOSE CONTROL

MCC

SW. SENSING CIR. :

120

AC

LIMIT

TORQUE

N/A

VOLTAGE

ID. NO.

TYPE I

SIZE

BODY ORIENTATION:

INITIAL POSITION:

FINAL POSITION :

IFDN-74

GATE

12"

HORIZONTAL

N/A

N/A

TORQUE SWITCH MOTOR

OPEN T.S. SETTING : 3.0/3.0

CLOSE T.S. SETTING: 1.75/1.75

LIMITER PLATE : NONE

TS BALANCEABLE : YES

VOLTS : 575 AC

RATED AMPS: 6.35

SPEED : 1720

HORSEPOWER: 12 FT #

LOAD CELL

AMP PROBE

MAINFRAME

TMD #

TEST EQUIPMENT

# a 50 K--N/A

N : SIMPSON(20) N/A

# : N/A

: N/A
42

TEST ID: VALVE #1 BY: RLBJ DATE: 06-17-85

THRUST SGNATURE ANALYSIS

STROKE TIME

BPHC& rNflE

THRUST AT CST

SEAT THRUST AT CS

&Ls'E RUN THRUST

MAX RUI THRUST

ItIERTSriL THRUST

TOTAL THRUST

TORQUE SW. SETTItN

TS-OC-0 1-0 1

57. 8 SECONDS

O .1 43 SEC-i OND

: 1 376 #

T: 12744 

: 2q3' 1 #

* 6 32 #

: 3 6 .

: 22429 #

IG: 1. 75/1 .75

TS-CO-O 1-02

STPOkE TIME

BYP'B- TIME

PROTEC TION MRGINUHI ISEATING TIME

AVE RUN THRUST

MAX RUN THRUST

UNSEATING THRUST

THRUST AT CST

TORQUE SW. SETTING:

57.4 SECONDS

3.54 SECONDS

1.76 SECONDS

1.78 SECONDS

2293 #

2994 #

5161 4

N/A

3.0/3.0

SPRING PACK CALIBRATION SIGNATURE AALYSIS

K-FACTOR: 12744 #/V PRELOAD: C RUNNING

MOTOR CURRENT SIGNATURE ANALYSIS

CS-OC-O 1-03

STROKE TIME : 57.94

PEAK INRUSH : 20.72

AVE. RUN CURRENT : 5.41

MAX. RUN CURRENT : 5.41

SEATING CURRENT : 6.21

SECONDS

AMPERES

AMPERES

AMPERES

AMPERES

CS-CO-0 1-04

STROKE TIME

PEAK INRUSH

AVE. RUN CURRENT

MAX. RUN CURRENT

END CURRENT

: 57.4

: 20.05

5.35

5.35

5.31

SECONDS

AMPERES

AMPERES

AMPERES

AMPERES
TEST IDENTIFICATION: VALVE #1

STORAGE LOCATION : 01-01

PLOT NO. I

TMD SWITCHES: OPEN TO CLOSE

STROKE TIME : 57.78 SECONDS AVE RUN THRUST : 2931 #

MAX RUN THRUST : 3632 #

BYPASS TIME : 0.48 SECONDS THRUST AT CST : 16376 #

SEAT THRUST AT CST: 12744 1

INERTIAL THRUST . 36 %

TORQUE SW. SETTING:1.75/1.75 TOTAL THRUST : 22429 1

r |V/D 2.500O- I

T/D ..0004

TL -8.398.1

V/D 2. 500. Ia)

SWITC ITR Y 0.C 8!

SIGNATUR . T/D 1. 0001 I

YY ! TL -8. 4001

THRUST |

SIGNATURE _1

1x l I~~~~~~~~~~~~~~~~~~~I

. L. .Ti .vX ___ 

._
TEST IDENTIFICATION: VALVE #1

STOPAGE LOCATION : 01-02

PLOT NO. 2

TMD & SWITCHES: CLOSE TO OPEN

STROKE TIME

BYPASS IME

UNSEATING TIME

PROTECTION MARGIN

: 57.4 SECONDS

: 3.54

1 1.78

: 1.76

SECONDS

SECONDS

SECONDS

AVE RUN THRUST : 2293 #

MAX RUN THRUST : 2994 #

UNSEATING THRUST : 5161 #

THRUST AT CST : N/A

TORQUE SW. SETTING: 3.0/3.0

SWITCH

SIGNATURE

Vy

V/D 2.500e-1

_Vy 0. -7

T/O I. OOOe 

TL -. 39Se1

V/D 2.500Oe

Vy 0. e-6

T/O 1.OO00eI

TL -8. 400eI

L _ _

.. - - . I

THRUST

SIGNATURE

TL Vx
TEST IDENTIFICATION: VALVE #1

STORAeE LOCATION : 01-03

PLOT NO. 3

MOTOR CURRENT SWITCHES: OPEN TO CLOSE

STROKE TIME : 57.94 SECONDS PEAK INRUSH

AVE. RUN CURRENT

MAX. RUN CURRENT

SEATING CURRENT

: 20.72

: 5.41

: 5.41

: 6.21

AMPERES

AMPERES

AMPERES

AMPERES

SWITCH

SIGNATURE

Vy

MOTOR

CURRENT

SIGNATURE

V/D 2.500e-i

Vy 0. o-7

T/O 1.000l

TL -8. 398a1

V/0 5000.-1 IVY ~~~~~~~~~~~~~~V 0. a-7

T/D 1.0001

TL -8. 4001

F'-,'- -...''-'-'- 1- . _ . , j ~~~~~~~~~~L.

ont

TL 

Vx

TL Vx
TEST iDEN-IFICATION: ALOE #1

STONGE LOCATION : 01-04

PLOT NO. 4

MOTOR CURRENT SWITCHES: CLOSE TO OPEN

STROKE TIME : 57.4 SECONDS PEAK INRUSH

AVE. RUN CURRENT

MAX. RUN CURRENT

END CURRENT

: 20.05 AMPERES

: 5.35 AMPERES

: 5.35 AMPERES

: 5.31 AMPERES

SWITCH

SIGNATURE

Vy

MOTOR

CURRENT

SIGNATURE

V/D 2. 500-I

Vy 0. e-7

T/O 1.000e1

TL -8. 398el

V/D 5.000e-1

__________~~~~ Vy ~~~~~~~~~~~ 0. Q-7

T/b 1.OO00gI

TL -8. 400el

- - - - i ~ ~~~L.--

i~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

TL
Code

I

47

Test I.D. Valve #2

Comments

The close-to-open bypass switch requires

adjustment to properly cover the

unseating of the valve.

Recommendation

1. The bypass switch should be set to actuate after the valve has

unseated.
48

TEST ID: VALVE #2

SYSTEM

SYSTEM : N/A

FLOW : 0

TEMP : AMBIENT

PRESS : ATMOSPHERIC

SFTY REL'D: N/A

OPERATOR

TYPE : SMB

SIZE : 

SERIAL NO. : 103130

ORDER NO. : 338610A

ORIENTATION: VERTICAL

ELECTRICAL VALVE

CONTROL CIR VOLTS: 120

AC. 7C : AC

OPEN- CONTROL : LIMIT

CLOSE CONTROL : TORQUE

MCC : N/A

SW. SENSING CIR. : CURRENT

ID. 110.

TYPE

SIZE

BODY ORIENTATION:

INITIAL POSITION:

FINAL POSITION :

I DF1-76

GATE

12

HORIZONTAL

N/A

N/A

TORQUE SWITCH MOTOR

OPEN T.S. SETTING : 3.5/3.5

CLOSE TS. SETTING: 3.0/3.0

LIMITER PLATE : 4.0

TS BALANCEABLE : YES

VOLTS

RATED AMPS:

SPEED

HORSEPOWER:

575 AC

6.35

1720

12.0

LOAD CELL

AMP PROBE

MAINFRAME

TMO 

TEST EQUIPMENT

N : N/A--N/A

: SIMPSON(20) N/A

# : N/A

: NA
49

TEST ID: VALVE #2 BY: RLB DATEt 06-17-85

THRUST SIGNATURE ANALYSIS

STROKE TIME

BYPASS TIME

THRUST AT CST

SEAT THRUST AT CS

AVE RUN THRUST

MAX RUN THRUST

INERTIAL THRUST

TOTAL THRUST

TORQUE S. SETTI1

TS-OC-01-09

: 61.68 SECONDS

: 0 SECONDS

: 3.18 V

Ta 3. 18 V

:* PRELOCD

: (PRELOAD

: 6 

* 3.39 V

IC: 3.0/3.0

TS-CO-O1-10

STROKE TIME

BYPASS TIME

PROTECTION MARGIN

UNSEATING TIME

AVE RUN THRUST

MAX RUN THRUST

UNSEATING THRUST

THRUST AT CST

TORQUE SW. SETTING

: 61.72 SECONDS

: 0.82 SECONDS

:-1.42 SECONDS

: 2.24 SECONDS

a <PRELOAD

: <PRELOAD

: 0.935 V

: N/A

i, 3.5/3.5

SPRING PACK CALIBRATION SIGNATURE ANALYSIS

NO SPRING PACK CALIBRATION SIGNATURE ACQUIRED

MOTOR CURRENT SIGNATURE ANALYSIS

CS-OC-01-11

STROKE TIME

PEAK INRUSH

AVE. RUN CURRENT

MAX. RUN CURRENT

SEATING CURRENT

62.06 SECONDS

: 18.84 AMPERES

: 6 AMPERES

6 AMPERES

: 15.06 AMPERES

CS-CO-01-12

STROKE TIME

PEAK INRUSH

AVE. RUN CURRENT

MAX. RUN CURRENT

END CURRENT

: 61.66 SECONDS

: 18.99 AMPERES

: 5.7 AMPERES

: 5.75 AMPERES

: 5.63 AMPERES
TEST IENTIFICATION: VALYE #2

S.TORMGE LOC4TOQN : r0l-09

PLOT NO. I

Tri & SWITCHES: OPEN TO CLOSE

STROKE TIME

BYPASS TIME

: 61.6S SECONDS

: 0 SECOND S

AVE RUN THRUST

MAX RUN THRUST

THRUST AT CST

SEAT THRUST AT

INERTIAL THRUST

TOTAL THRUST

:(PRELOAD

:<PRELOAD

: 3.18 V

CST: 3.18 V

6 

TOROUE SW. SETT I 3: 3 .0 . : .39 V

-~ , ,- ,I _ 

SWITCH

SIGNATURE

Vy[

V/O 2.500e-l

Vy 0.n-7

T/O l.OOOel

V/O . 000 TL -8. 398el

_ Vy 0. -6

T/D l.OOOel

TL -8. 400el 

... 

____ ' 1- 

TL Vx~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

$-

C

THRUST

SIGNATURE

TL Vx
TEST IDENTIFICATION: VALVE #2

STORAGE LOCATION : 01-10

PLOT NO. 2

TMD SWITCHES: CLOSE TO OPEN

STROKE TIME

BYPASS TIME

UNSEATING TIME

PROTECTION MARGIN

: 61.72 SECONDS

: 0.82

: 2.24

:-1.42

AVE RUN THRUST :

MAX RUN THRUST s

UNSEATING THRUST :

THRUST AT CST

TORQUE SW. SETTINGi

(PRELOAD

CPRELOAD

0.935 V

N/A

3.5/3.5

SECONDS

SECONDS

SWITCH

SIGNATURE

V/D 2.500.-I

Vy 0. 9-7

TIO 1. 00091

TL -8. 39891

V/ 2. 5009O _~~~~~~~~~~~~~~ I.^ ...- .. .. .. .. ...._ .. 

Vy 0. Q-6

T/D 1.O0Oal

TL -8.400el

H..._ .___- ..- __

IVy_

THRUST

SIGNATURE

_-

TL 

Vx

TL Vx
TEST IDENTIFICATION: VALVE #2

STORAGE LOCATION : 01-11

PLOT NO. 3

MOTOR CURRENT c SWITCHES: OPEN TO CLOSE

STROKE TIME : 62.06 SECONDS PEAK INRUSH

AVE. RUN CURRENT

MAX. RUN CURRENT

SEATING CURRENT

: 18.84 AMPERES

: 6 AMPERES

: 6 AMPERES

: 15.06 AMPERES

I | I I r

SWITCH

SIGNATURE

V/D 2.500Q-i

Vy 0. e-7

T/D 1. 0OOl

TL -8. 398Q1

V/D 5.000.-1

Vy 0.9Q-7

T/O .0O00I

TL -8. 400.1

_n ~~~~~~~~~~~~~L.

VI r%3

vy H

MOTOR

CURRENT

SIGNATURE

T L V x~~~I 

TL Vx
TEST IDENTIFICATION: VALVE #2

STORAGE LOCATION : 01-12

PLOT NO. 4

STROKE TIME

MOTOR CURRENT SWITCHES: CLOSE TO OPEN

: 61.66 SECONDS PEAK INRUSH

AVE. RUN CURRENT

MAX. RUN CURRENT

END CURRENT

: 18.99 AMPERES : 5.7 AMPERES

: 5.75 AMPERES

: 5.63 AMPERES

SWITCH

SIGNATURE

V/0 2.500a-I

_Vy .- 7

T/D 1.000a1

TL -8.398el

V/0 5. 0009-1

. y 0 -7

T/D 1.000al

_TL -8.400al

en

w~

vy F

MOTOR

CURRENT

SIGNATURE

TL
54

Test I.D. Valve #3

Code Comments

I Thrust signatures show that the

potential for a loosened stem nut

locknut exists. (See Recommendation

#1).

3 The close-to-open bypass switch requires

adjustment to properly cover the

unseating of the disc. (See

Recommendation #2).

4 Thrust signatures indicate an apparent

gap of .025" in the spring pack

assembly.

Recommendations

1. We recommend that the following actions be taken to visually determine

if the locknut is in fact loosened:

a. Operate the valve to a mid-position by opening the valve.

b. Remove the stem thread guard pipe if one exists.

c. Once the guard pipe is removed, visually inspect the locknut to

determine if it has backed itself out.

d. Please note also that if the locknut is found to be loose,

readjustment to the correct position will result in the limit,

bypass, and light indication switches being improperly positioned.

2. The close-to-open bypass switch should be reset to actuate after valve

unseating has occurred.
55

TEST IDs VALVE #3

SYSTEM

SYSTEM : NA

FLOWI : 

TEMP - AMBIENT

PRESS : ATMOSPHERIC

SFTY REL'D: NA

OPERATOR

TYPE : SMB

SIZE I

SERIAL NO. : 100816

ORDER NO. : 336591A

ORIENTATION: HORIZONTAL

ELECTRICAL VALVE

CONTROL CIR VOLTS:

AC/DC

OPEN CONTROL :

CLOSE CONTROL

MCC

SW. SENSING CIR. :

120

AC

LIMIT

TORQUE

N/A

VOLTAGE

ID. NO.

TYPE I

SIZE I

BODY ORIENTATION:

INITIAL POSITION:

FINAL POSITION 

VALVE #3

GATE

12"

HORIZONTAL

N/A

N/A

TORQUE SWITCH MOTOR

OPEN T.S. SETTING 

CLOSE T.S. SETTING:

LIMITER PLATE

TS BALANCEABLE a

3.0/3.0

2.0/2.0

4.0

YES

VOLTS a 575 AC

RATED AMPS: 6.35

SPEED a 1720

HORSEPOWER 12

LOAD CELL

AMP PROBE

MAINFRAME

TMD 

TEST EQUIPMENT

P : N/A--N/A

$ a SIMPSON(20) N/A

# a N/A

a NA
56

TEST I: VALVE #3 BY: RLBJ DATE: 06-17-85

THRUST SIGNATURE ANALYSIS

STROKE TIME

9YPAIS TIME

THPUST Ar (1:ST

SEAT HPU2T t C:

i4V E RU I THRUST

MAX RUN THRUST

ItIERTIHL THRUST

TOTAL RUST

TORQUE S. SETTIr

TS-OC-0 1-05

: 63.54 SECONDS

: 0.4 SECONDS

: 1. 685 

ST: 1.505 

t 0. V

0 . 185 V

: 2.0? 

NS: 2.012.0

TS-CO-0 1- 06

STROKE TIME I

BYPASS TI lt

PROTECTIOII MARGIN -

US-sEAT ING TI ME

AY4 !ERUI THRUST

MAX RIJ THRUST

UNSEATING THRUST :

THRUST AT CST

TORQUE SWJ. SETTING:

63. 1 SE

1.38 SE

-4.06 SE

5.44 S5

0 .25 t'

0.25 U

0.525 

NXA

3.0/3.0

:C.ONDS

'CrONQDS

ECONOS

ICo

SPRING PACK CALIBRATION SIGNATURE 1 ALYSIS

1N0 SPRING PACK CALIBRATION SIGNATURE ACQUIRED

MOTOR CURRENT SIGNATURE ANALYSIS

CS-OC-O 1-08

STROKE TIME : 63.56

PEAK INRUSH : 21.12

AVE. RUN CURRENT : 5.41

MAX. RUN CURRENT : 5.41

SEATING CURRENT : 7.95

SECONDS

AMPERES

AMPERES

AMPERES

AMPERES

CS-CO-0 1-0?1

STROKE TIME

PEAK INRUSH

AVE. RUN CURRENT

MAX. RUN CURRENT

END CURRENT

: 63.08

: 18.23

: 5. 15

: 5. 17

: 5.14

SECONDS

AMPERES

AMPERES

AMPERES

AMPERES
TEST IDENTIFICATION: VALVE 3

STORAGE LOCATION : 01-05

PLOT NO. 

TI-1D &t SWITCHES: OPEN TO CLOSE

STROKE TIME : 63.54 SECONDS AVE R THRUST : 0.19 V

MAX R THRUST : 0.185 V

BYPASS TIME 0.4 SECONDS THRUST AT CST : 1.685 V

SEAT THRUST AT CST: 1.505 V

INERTIAL THRUST : 22 7.

TORQUE S. SETTING: 2.0/2.0 TOTAL THRUST : 2.07 V

IVD2. 300e-1

Vy0..a-7

jrio 1. 000.1

TL -8. 246.1 kA

SW ITCH i -1 - MnTT" M VW W N PIP VfI~ ll ~ it~....2 VAp. ... .. V/.. 0 . SIGNATURE VIA D. -B F ~~~~~~~~~~~~~~~~~~~T/D 1.000a1

v~~~~~~~~~~ ~ ~~~~~~~~~'TL F ~ ~ -. 250al

v F

THRUST ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ --

I 1

1

it
TEST IDENTIFICATION. VALVE 3.

STORAGE LOCATION : 01-06

PLOT r1o. 2

TMD & SWITCHES: CLOSE TO OPEN

STROKE TIME

BYPASS TIME

UNSEATING TIME

PROTECTIOil M;ARGIN

: 63.1 SECONDS

: 1.38

: .44

: -4 .61

AVE RUN THRUST : 0.25 V

MAX RUN THRUST : 0.25 V

UNSEATING THRUST : 0.525 V

THRUST AT CST : N/A

TORQUE SW. SETTING: 3.0/3.0

SECOINDS

SECONDS

-- -r--- ---- -- - -- - --- - - , ---r- -- - - - - "I -r- ---

i

LSWITCH I

SIGNATURE

1V/D 2.500.-l

1Vy .Q-7

IT/ 1.000Cl

jTL -8. 248.1 VI

I ... . . . - .. .. . . . . . . . . . . . .. . . .. -. . . . iV/D 2. 500.0

_Vy .e-6

T/D 1. OOel

ITL -8. 250. I

Vy I- _

I ~ ~ ~ 

THRUST I

SIGNATURE L t

Il

-----4

1

111

Ii

i - =. - - ... - i . - A - I.. -___ _ _ .. - - ~ .. II ... -J - - .. .. -.. . _ .- -

TL
PLOT NO. 3

STROKE TIME

TEST IDENTIFICATION: VALVE #3

STORAGE LOCATION : 01-08

MOTOR CURRENT te SWITCHES: OPEN TO CLOSE

: 63.56 SECONDS PEAK INRUSH : 21.12 AMPERES

AVE. RUN CURRENT : 5.41 AMPERES

MAX. RUN CURRENT : 5.41 AMPERES

SEATING CURRENT : 7.95 AMPERES

.-.. -----.----- ---------- -- -- -s F//D 2.500.-I

Vy 0. e-7

I . 1 ~~~~~~~~~~~~~~~~~~~~~~~~~~~

1. OOnQ I

L J

TL -8. 24891

SWITCH ....... .... V/D) .coon- I

SIGNATURE -,

JT/D 1.000el

ITL -8.250Q1

MOTOR CURRNT L _ SIGNATURE; 

TL V1

TL Vx

I

I

I

Vfl

%0

I

I

i

I
TEST IDENTIFICATION% VALVE #3

STORAGE LOCATION : 01-07

PLOT NO. 4

MOTOR CURRENT & SWITCHES: CLOSE TO OPEN

STROKE TIME : 63.08 SECONDS PEAK INRUSH

AVE. RUN CURRENT

MAX. RUN CURRENT

END CURRENT

: 18.23 AMPERES

: 5.15 AMPERES

: 5.17 AMPERES

: 5.14 AMPERES

- - '- -1-- - --- -- -- -- - - - -

F

SWITCH !

SIGNATURE F

Vy 

iV/D 2.500e-I

IVy 0.-7

iT/D 1. 000e1

TL -8.2481

il I". . . .. I Ul.ilW.. iTlTa.lfl l f l l, l.l.l.l ... - - i . 'i i" _

V/D 5.0000-1

Vy 0. a-7

g

all.

I

-4

T/D 1. 000 1

TL -8. 250.1

1 -I i-.. $

F V-_. . . .. _* . . . . 7 -1.. 

MOTOR CURRENTF ...

SIGNATURE i

TL Vx
61

Test I.D. Valve #4

Code Comments

2 Drawing OEE-145-17 Rev 1 shows the power

supply for this valve as 600 volts.

Motor name plate rating is 208/416v,

5.1/2.55 Amps. Based on this

information, we would expect that the

normal running current should be

somewhat less than 2.55. Since the

average running current is 3.5 Amps, it

appears that this machine is operating

with excessive mechanical degradation.

(See Recommendation 1).

3 Thrust signatures indicate a distinct

cyclic loading condition occurring at a

frequency of 37.5 RPM. (See

Recommendation 2).

Recommendations

1. Actual line voltage and rated running currents should be verified

immediately.

2. This degradation may be caused by a slight vertical misalignment of

the drive sleeve (perhaps incorrect upper bearing housing gaskets), or significant wear on approximately 50% of the worm gear's

circumference, or possibly excessive packing load. The condition does

not, in our opinion, jeopardize the operability of the valve at this

time.
62

TEST ID: VALVE #4

SYSTEM

SYSTEM : N/A

FLOW : 0

TEMP : AMBIENT

PRESS : ATMOSPHERIC

SFTY RELSD: ti/A

OPERATOR

TYPE : SMB

SIZE : 00

SERIAL NO. : 101681

ORDER NO. : 340064

OR IENTATI ON: HORI ZONTAL

ELECTRI CAL VALVE

CONTROL CIR VOLTS:

AC/DC

OPEN CONTROL

CLOSE CONTROL

MCC

SW. SENSING CIR.:

110

AC

LIMIT

TORQUE

N/A

VOLTAGE

ID. NO.

TYPE

SIZE

BODY ORI ENTAT ION:

INITIAL POSITION:

FINAL POSITION :

FDW- 103

il/A

4-

HORIZONTAL

N/A

N/A

TORQUE SWITCH MOTOR

OPEN T.S. SETTING:

CLOSE T.S. SETTING:

LIMITER PLATE :

TS BALANCEABLE

2.0/2.0

3.0/3.0

N/A

YES

VOLTS : 208/4 16 N/A

RATED AMPS: 5.1

SPEED : 1700

HORSEPOWER: N/A

TEST EQUIPMENT

LOAD CELL

AMP PROBE

MA I NFRAME

TMD #

# : N/A--

# : N/A N/A

N : N/A

: N/A
63

TEST ID: VALVE 4 BY: RLBJ DATE. 06-17-85

THRUST SIGNATURE ANALYSIS

TS-OC-01-19

STROKE TIME : 22.98 SECONDS

BYPASS TIME : 0.98 SECONDS

THRUST AT CST : 2.57 V

SEAT THRUST AT CST: 2.415 V

AVE RUN THRUST : 0.105 V

MAX RUN THRUST : 0.165 V

INERTIAL THRUST a 4 

TOTAL THRUST : 2.695 V

TORQUE SW. SETTING: 3.0/3.0

TS-CO-01-18

STROKE TIME

BYPASS TIME

PROTECTION MARGIN :

UNSEATING TIME I

AVE RUN THRUST

MAX RUN THRUST :

UNSEATING THRUST :

THRUST AT CST

TORQUE SW. SETTING:

22.45 SECONDS

1.72 SECONDS

0.91 SECONDS

0.81 SECONDS

0.284 V

0.334 V

1.204 V

N/A

2.0/2.0

SPRING PACK CALIBRATION SIGNATURE ANALYSIS

NO SPRING PACK CALIBRATION SIGNATURE ACQUIRED

MOTOR CURRENT SIGNATURE ANALYSIS

CS-OC-02-01

STROKE TIME

PEAK INRUSH

AVE. RUN CURRENT

MAX. RUN CURRENT

SEATING CURRENT

: 23 SECONDS

: 12.08 AMPERES

* 3.66 AMPERES

X 3.67 AMPERES

: 4.76 AMPERES

CS-CO-01-20

STROKE TIME

PEAK INRUSH

AVE. RUN CURRENT

MAX. RUN CURRENT

END CURRENT

: 22.47 SECONDS

: 12.7 AMPERES

: 3.66 AMPERES

: 3.66 AMPERES

: 3.66 AMPERES
TEST IDENTIFICATION: VALVE #4

STOCAGE LOCATION : 01-19

PLOT NO. 1

TMc & SWITCHES: OPEN TO CLOSE

STROKE TIME

BYPASS TIME

: 22.9S SECONDS

: 0.98 SECONDS

AVE RUN THRUST : 0.105 V

MAX RUN THRUST : 0.165 V

THRUST AT CST :2.57 V

SEAT THRUST AT CST: 2.415 V

INERTIAL THRUST : 4 

TOROUE SW. E-TTING: .0 . TOTAL THRUST : 2.695 V

|V/o 1. 000.0

iVy .a-7

T/fl 5.000.0

TL -4. 25 1

I111111IIIIII IIIIIII IIIIII IIIIIII IIIIII IiIIIII IIIIIIIIIIIII lIIIIIIhhIEJ V/III2. 500.0

SWITCH

SIGNATURE

THRUST

SIGNATURE

I

Yv F

If .. If ..... - ivy 0.0Q-6

-1!7/0 5 000.0

TL -4.267al

I

I

i

I

It

7- ~~~~~~~1

1 1 

H A 

L_ . . .. _ . - ... 

TL Vx

I
TEST IDErTIFICATION: VALVE #4

STORAGE LOCATION 01-1S

PLOT NO. 2

TMD SWITCHES: CLOSE TO OPEN

STROKE TIME : 22.45 SECONDS AVE RUN THRUST : 0.284 V

MAX RUN THRUST a 0.334 V

BYPASS TIME : 1.72 UNSEATING THRUST : 1.204 V

UNSEATING TIME : 0.81 SECONDS THRUST AT CST a N/A

PROTECTION MARGIN : 0.91 SECONDS TORQUE SW. SETTING: 2.0/2.0

! - * ------ , , 1. 

F L ivy~~~~~~~~~~~~~~~~~~

!V/ -4.1-7 l.000aO

SWITCH ,V/D 1.000a

SIGNATURE P Vy O. -7|

i | I~~~~~~~~~~~~~~~~~~T/D . OQO

V ; t _ _ _F_ TL -4.197Q1

THRUST ._,, ... 

SIGNATURE | , .

L -. _ *-** ._ ...-....-.-.... _ __.- -- ----- _ ..-.--........- 

TL Vx
TEST IDENTIFICATION: VALVE #4

STORAGE LOCATION : 02-01

PLOT NO. 3

MOTOR CURRENT : OPEN TO CLOSE

STROKE TIME : 23 SECONDS PEAK INRUSH

AVE. RUN CURRENT

MAX. RUN CURRENT

SEATING CURRENT

: 12.08 AMPERES

: 3.66 AMPERES : 3.67 AMPERES

: 4.76 AMPERES

r-.- - - - - ---- 

I

iV/0 1.OO0nO

iVy 0. -7

1 T/D 5. 0O00al

ITL -4. 240a1

MOTOR CURRENT

SIGNATURE

Vy

V/D 2. 50OQO

A Vy . -5

, L

-I

'T/D 5.0OODO

iTL -4.239s1

II - 1

1 I

L l .I. .. .. . . .

TL

. .. -. . _ . .- . . . .. . ... 

Vx
TEST IDENTIFICATION: VALVE #4

STORAGE 'LOCATION : 01-20

PLOT NO. 4

MOTOR CURRENT I CLOSE TO OPEN

STROKE TIME : 22.47 SECONDS PEAK INRUSH

AVE. RUN CURRENT

MAX. RUN CURRENT

END CURRENT

: 12.7 AMPERES

: 3.66 AMPERES

: 3.66 AMPERES

: 3.66 AMPERES

YOTOR CURREI

SIGNATURE

I jV/D 1. 000.0

jVy 0.a-7

1 T/D 5. 0000

TL -4.301al

V/D 2. 500aO

NT l l iVy 0. -8

!T IT/D 5. DO0.0

Vy ~~~~~~~~~~~~~- ~~~~~JLt -4.300a2

Vy L

TL - -Vx

0%-J
68

Test I.D. Valve #5

Code Comments

1/4 This valve exhibited the same condition as described for Valve #6 in that

release of the hand switch in the

control room upon receipt of closed

indication would not guarantee valve

closure. The switches were reset to ensure disc contact with the seat.

2 During equipment installation, a "pool"

of oil was noted in the electrical

compartment cover. The limit switch

rotors as well were coated with oil.

(See Recommendation #1).

4 The thrust signatures revealed a minor

gap of approximately .010" in the spring

pack assembly.

Recommendations

1. The limit switches should be cleaned immediately and the cause for the

oil leakage determined.
69

TEST IDt VALVE 5

SYSTEM

SYSTEM NA

FLOW : 0

TEMP : AMBIENT

PRESS a ATMOSPHERIC

SFTY REL'D: N/A

OPERATOR

TYPE a SMB

SIZE 00

SERIAL NO. z 120565

ORDER NO. a 346299A

ORIENTATION: HORIZONTAL

ELECTRICAL VALVE

CONTROL CIR VOLTS: 110

AC/DC : AC

OPEN CONTROL : LIMIT

CLOSE CONTROL : TORQUE

MCC : N/A

SW. SENSING CIR. :VOLTAGE

TORQUE SWITCH

OPEN T.S. SETTING 2.25/2.25

CLOSE T.S. SETTING: 2.25/2.25

LIMITER PLATE 3.75

TS BALANCEABLE X YES

ID. NO. a VALVE #5

TYPE a GATE

SIZE : 6'

BODY ORIENTATION: HORIZONTAL

INITIAL POSITIONs N/A

FINAL POSITION a N/A

MOTOR

VOLTS X 208 AC

RATED AMPS: 8.8

SPEED : 1750

HORSEPOWER: 1.6

TEST EQUIPMENT

LOAD CELL a N/A--N/A

AMP PROBE : SIMPSON(200) N/A

MAINFRAME N N/A

TMD : N/A
70

TEST ID: VALVE C5 BY: RLBJ DATE: 06-17-85

THRUST SIGNATURE ANALYSIS

TS-OC-01-12

STROKE TIME : 29.16 SECONDS

BYPASS TIME : 0 SECONDS

THRUST AT CST : 0.056 V

SEAT THRUST AT CST:-2E-03 V

AVE RUN THRUST : 0.058 V

MAX RUN THRUST : 0.058 V

INERTIAL THRUST : 0 %

TOTAL THRUST : 0.056 V

TORQUE SW. SETTING: 2.25/2.25

TS-CO-01-11

STROKE TIME : 29.04 SECONDS

BYPASS TIME : 1.3 SECONDS

PROTECTION MARGIN : 0.76 SECONDS

UNSEATING TIME : 0.54 SECONDS

AVE RUN THRUST : 0.026 V

MAX RUN THRUST : 0.026 "

UNSEATING THRUST :(PRELOAD

THRUST AT CST : NA

TORQUE SW. SETTING: 2.25/2.25

SPRING PACK CALIBRATION SIGNATURE ANALYSIS

NO SPRING PACK CALIBRATION SIGNATURE ACQUIRED

MOTOR CURRENT SIGNATURE ANALYSIS

CS-OC-01-15

STROKE TIME : 2.64

PEAK INRUSH' : 23.7

AVE. RUN CURRENT : 5.96

MAX. RUN CURRENT : 5.96

SEATING CURRENT : 5.88

SECONDS

AMPERES

AMPERES

AMPERES

AMPERES

CS-CO-01-14

STROKE TIME

PEAK INRUSH

AVE. RUN CURRENT

MAX. RUN CURRENT

END CURRENT

: 35.2 SECONDS

: 24.5 AMPERES

: 5.98 AMPERES

5 5.98 AMPERES

: 5.96 AMPERES
TEST IDENTIFICATION: VAL'VE 5

STORAGE LOCATION : 01-12

PLOT NO. I

TMD & SWITCHES: OPEN TO CLOSE

STROKE TIME a 29.16 SECONDS

BYPASS TIME : 0 SECONDS

TORQUE SW. SETTING: 2.25/2.25

AVE RUN THRUST : 0.058

MAX RUN THRUST a 0.058

THRUST AT CST t 0.056

SEAT THRUST AT CSTs-2E-03

INERTIAL THRUST : 0 

TOTAL THRUST : 0.056

V

V

V

V

v

__I, , . _

IY/D 1. 0000 Y 0. 7

| T/D . DOeD) ITL 5. 53201 I_ -1

I-

............ ~~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ _llllllllm wmEw

SWITCH

SIGNATURE

Vy

THRUST

SIGNATURE

1...

I.

V/D 1. 000U0

Vy 0. -7

T/D 5. 0000

ITL -5.53401

I

I1

'TI 1.Vx
TEST IDENTIFICATION: VALVE 5

STORAGE LOCATION : 01-11

PLOT NO. 2

TMD & SWITCHES: CLOSE TO OPEN

STROKE TIME

BYPASS TIME

UNSEATING TIME

PROTECTION MARGIN

: 29.04 SECONDS

: 1.3

: 0.54

: 0.76

SECONDS

SECONDS

SECONDS

AVE RUN THRUST : 0.026 V

MAX RUN THRUST : 0.026 

UNSEATING THRUST :"PRELOAD

THRUST AT CST : N/A

TORQUE SW. SETTING: 2.25/2.25

.- v- - - -'-- - --- -.. - ---

V/D 1. OOOO

Vy 0. c-7

T/D 5. 00Q0

TL -5. 0851

SWITCHI

SIGNATURE VyL

I.

,"nIqq - I-.

IV/D 1. 000.0

!Vy 0.Q-7

-i

1 T/D 5. 00D0

-TL -. 068.1 -

THRUSTj J

SIGNATURE r

L _ Vx.. 

F _ . .

TL VJx
TEST IDENTIFICATION: VALVE #5

STORAGE LOCATION a 01-15

PLOT NO. 3

MOTOR CURRENT SWITCHES: OPEN TO CLOSE

STROKE TIME : 29.64 SECONDS PEAK INRUSH

AVE. RUN CURRENT

MAX. RUN CURRENT

SEATING CURRENT

s 23.?

: 5.96

s 5.96

5 5.88

AMPERES

AMPERES

AMPERES

AMPERES

, _ , ____ _ , , *_ _~~~~~~~~~~~~~~~~~

SWITCH

SIGNATURE

CURRENT

SIGNATURE

L

v i I

I.-I

•j

1v/D 1. D0OO

QVyOD~r7 

1J TL -5. 122n 1

Vy O.e-7

1

T/D3 5.000

ITL -5. 2241 |

1~ - - I 

-

"a

I

L_ !!~~~~~~~~ ._._

*.I

- ~~~~~~~~~~~~~~~~~~~~~~~~~~~~

L -.--' . -- - .-.-

TL Vx
TEST IDENTIFICATIONi VHLVE #5

STORAGE LOCA~TION s 01-14

PLOT NO. 4

MOTOR CURRENT & SWITCHES: CLOSE TO OPEN

STROKE TIME 35.2 SECONDS PEAK INRUSH

AVE. RUN CURRENT

MAX. RUN CURRENT

END CURRENT

t24.5 AMPERES

:5.98 AMPERES

:5.98 AMPERES

:5.96 AMPERES

r----- - --- --- - -

i

-, - - I ------ - ,'~ 

I IV/D 1. 000,0

Vy 0.o-7

IT/fl 5.00.0

TL -4. 772,2 Il 1lpI.yppti1ighii~II3~I, 1h11l1"'' LI

i

'-a

V/l 1. 000,0

SWITCH

SIGNATURE

vy

Vy 0. -7

T' -4. 774.1'

CURRENT

SIGNATURE

TL Vx
75

Test I.D. Valve #6

Code Comments

Initial motor current signatures

indicated a high running current (50X over rated). Since the stem was not

lubricatd, it was originally thought that

this might be the cause of the high

current. The stem was lubricated and the

valve cycled. Thrust signatures taken at

this time showed in one case that the

valve did not hit the seat. In a re-test

it barely hit the seat. This was quite

.perplexing since the original signature

showed clearly that the valve was being

seated and the torque switch terminating

travel. It is important to note that

initial signatures showed that the close

to open torque switch bypass, S-5, was set to trip three seconds after

hammerblow. During the original analysis

of this switch signature, it was

concluded that the setting was excessive,

however, it was not of major concern

since the overall valve cycle was 36-37

seconds. Final signatures showed,

however, that the setting of LS-5 must be

shortened and reset to open just after

hammerblow. This is critical since, as was learned later, this valve does not

have a seal-in contactor. Operationally,

what this means is that the control room

terminates valve operation as soon as the

light indications show the valve to be

open/closed. The closed light indication

(LS-7) is on the same limit switch rotor as LS-5. Therefore, with LS-5 set to

trip after a significant amount of stem

travel, this conversely established that

the closed light would be activated

before the valve was actually closed.

The amount of time that the operator

holds the control switch after receipt of

closed indication, dictates whether or

not the valve actually closes and/or the

magnitude of the seating load. To
76

Test I.D. Valve #6

preclude valve leakage and possible seat

damage to this steam valve, it is

recommended that LS-5 be set to trip just

after hammerblow and retested to verify

that the valve will seat if the control

switch is released at the time the closed

indication is received and that the

torque switch is, in fact, terminating

the travel. LS-7 (closed indication) was

satisfactorily reset to close later in

the open to close cycle.

I The thrust signatures reveal that the

potential exists for a loose stem nut

locknut. (See Recommendation No. 1.)

2 During equipment installation oil was

noted to be dripping from the limit

switch rotors. This condition could

throw the entire control functions into

turmoil. (See Recommendation No. 2.)

2 It should be noted that although the

valve is not set up to reliably hit the

seat, the actual seating force will

probably vary from operator to operator

(control room). Consistent seating force

will only be attained if the torque

switch is allowed to terminate travel.

(See Recommendation No. 3.)

Recommendations

1. We recommend that the following actions be taken to visually determine

if the locknut is in fact loosened:

A. Operate the valve to a mid-position by opening the valve.

B. Remove the stem thread guard pipe if one exists.

C. Once the guard pipe is removed, visually inspect the locknut to

determine if it has backed itself out.

D. Please note also that if the locknut is found to be loose,

readjustment to the correct position will result in the limit,

bypass, and light indication switches being improperly positioned.
77

Test I.D. Valve #6

2. Not only should the switches be cleaned but, likewise, the condition of

the gearbox grease and sealing gaskets inspected. Oil leakage may be

an early indication of incompatible lubricating greases.

3. If the present setup is not deemed to be optimum by plant engineering

and operations personnel, then consideration should be given to using a

seal-in contactor in the close direction.
78

TEST ID: VALVE #6

SYSTEM

SYSTEM : N/A

FLOW : 0

TEMP : AMBIENT

PRESS : ATMOSHERIC

SFTY REL'D: N/A

OPERATOR

TYPE : sMB

SIZE : 00

SERIAL NO. : 120564

ORDER NO. : 346299A

ORIENTATION: HORIZONTAL

ELECTRICAL VALVE

CONTROL CIR VOLTS:

AC DC

OPEN CONTROL

CLOSE CONTROL

MCC

SW. SENSING CIR. :

110

LIMIT

TORQUE

L/A

VOLTAGE

ID. NO.

TYPE

SIZE

BODY ORIENTATION:

INITIAL POSITION:

FINAL POSITION :

VALVE #6

GATE

6"

HORIZONTAL

N/A

N/A

TORQUE SWITCH MOTOR

OPEN T.S. SETTING : 2.0/2.0

CLOSE T.S. SETTING: 2.0/2.0

LIMITER PLATE : 4.0

TS BALANCEABLE : YES

VOLTS

RATED AMPS:

SPEED

HORSEPOWER:

208 AC

8.8

1750

1.6

TEST EQUIPMENT

LOAD CELL

AMP PROBE

MAINFRAME

TMD #

N:

N:

N:

N/A--N/A

SIMPSON(200) N/A

N/A

N/A
79

TEST IDt VALVE #6 BY: RLBJ DATEs 06-17-85

THRUST SIGNATURE ANALYSIS

TS-OC-01-01

STROKE TIME : 35.56 SECONDS

BYPASS TIME : 0.9 SECONDS

THRUST AT CST a 1.546 V

SEAT THRUST AT CSTi 1.524 V

AVE RUN THRUST a 0.022 V

MAX RI THRUST a 0.022 U

INERTIAL THRUST a 21 

TOTAL THRUST a 1.886 V

TORQUE SW. SETTING, 2.0/2.0

TS-CO-01-02

STROKE TIME a 36.18

BfPASS TIME a 3.86

PROTECTION MARGIN t-0.46

UNSEATING TIME a 4.32

AVE RUN THRUST 0.038

MAX RUN THRUST a 0.038

UNSEATING THRUST a 0.24

THRUST AT CST N/A W 

TORQUE SW. SETTINGs 2.0/2.

SECONDS

SECONDS

SECONDS

SECONDS

V

V

V

SPRING PACK CALIBRATION SIGNATURE ANALYSIS

NO SPRING PACK CALIBRATION SIGNATURE ACQUIRED

MOTOR CURRENT SIGNATURE ANALYSIS

CS-OC-01-03

STROKE TIME a 36.62

PEAK INRUSH i 24.38

AVE. RUN CURRENT a 5.74

MAX. RUN CURRENT a 5.74

SEATING CURRENT a 8.86

SECONDS

AMPERES

AMPERES

AMPERES

AMPERES

CS-CO-01-04

STROKE TIME

PEAK INRUSH

AVE. RUN CURRENT

MAX. RUN CURRENT

END CURRENT

* 36.26

a 24.92

a 6.02

a 6.02

* 5.98

SECONDS

AMPERES

AMPERES

AMPERES

AMPERES

I,
TEST IDENTIFICATION: UALUE #6

STORAGE LOCATION : 01-01

PLOT NO. I

TMD SWITCHES: OPEN TO CLOSE

STROKE TIME

BYPASS TIME

: 3.56 SECONDS

: 0.9 SECONDS

AVE RUN THRUST

MAX RUN THRUST

THRUST AT CST

SEAT THRUST AT

INERTIAL THRUST

TOTAL THRUST

CST:

0.022

0.022

1.546

1.524

21 

1.886

V

V,

V

V

V TORQUE SW. SETTING: 2.0/2.0

I IV/D 2.500.0

jvy ..-6

in

SWITCH

SIGNATURE nnunnnimnujnun l

T/D 1. 00091

jTL -. 706al ,,I111hl, " ' 'XIIuI.ll' ... .

T - 7_ 8_

0, 0

IV/D 1. 000.0

Vy . u-7

T/D 1. 000.1

TL -. 7081

Vy -

THRUST

SIGNATURE t -. -

1

.1.~~~~~~~~~. .~ . ~ . .

.

I. ~- -..- --.L .. - . .

II

I

II - I

TL
TEST 'IDENTIFICATION: VALVE #6

STORAGE LOCATION : 01-02

PLOT NO. 2

TMD SWITCHES: CLOSE TO OPEN

STROKE TIME

BYPASS TIME

UNSEATING TIME

PROTECTION MARGIN

: 3.13 SECONDS

: 3.86

: 4.32

:-0.46

AVE RUN THRUST s 0.038 V

MAX RUN THRUST : .038 V

UNSEATING THRUST : 0.24 V

THRUST AT CST : N/A

TORQUE SW. SETTING: 2.0/2.0

SECONDS

SECONDS

F-... --- - --

SWITCHI

SIGNATURE I Il

Vy

. .

j V/D 1. 000,0

!Vy 0.0-7

T/D 1.000S

fTL -8. 3D01 0-

IV/D 2. 50S0

iVy 0. .-

M, Iv 1 T/D 1.000 1

_ _ _ _ -8.298.1

II

THRUST I

SIGNATURE .

ITL

I * *

.. 1

i y

..A - .-.. , . . - - - . L - . ... -- - . -
TEST IDENTIFICATION: VALUE #6

STORAGE LOCATION : 0-03

PLOT NO. 3

MOTOR CURRENT & SWITCHES: OPEN TO CLOSE

STROKE TIME : 36.62 SECONDS PEAK INRUSH

AVE. RUN CURRENT

MAX. RUN CURRENT

SEATING CURRENT

: 24.38

: 5.74

: 5.74

: 8.86

AMPERES

AMPERES

AMPERES

AMPERES

1..~~~~~~~~~- - -- -- --- ---- !VD1.0OO

I Vy 0. .- 7

I T/D 1. 000 I

iTL -8. 552.1

IVyk

MOTOR CURRENT

SIGNATURE L

L

l

ITL

l l9

I ., -1

- 4 - - -

-1

I i

I . --4. - .- - .- .1 - - .--&. ---  - .-1 -" .. -- - 1. -  , i - -.. -.-- ---- - .-.j

V.x
I I  .0 . - .

TEST IDENTIFICATION: VALVE 6

STORAGE LOCATION : 01-04

PLOT NO. 4

MOTOR CURRENT SWITCHES: CLOSE TO OPEN

STROKE TIME : 36.26 SECONDS PEAK INRUSH

AVE. RUN CURRENT

MAX. RUN CURRENT

END CURRENT

a 24.92

: 6.02

a 6.02

X 5.98

AMPERES

AMPERES

AMPERES

AMPERES

II 1/r . 000.0

)Vy 0. a-7

1T/D S. OOeO

iTL -5. 414.l

=~~~~~~~~ -I

Vy = I

- L

MOTOR CURRENT

SIGNATURE

Ie L

i

I

I- *1

I- I

-1I I I I

- ---- LJ---.

TL 

Vx

TL Vx
84

Test I.D. Valve #7

Code Comments

1,4 Testing the valve at the as found

settings revealed that the operator was

developing thrusts in both directions

that exceeded the operator's designed

maximum. The torque switch settings

were changed from 4.0 in the open

direction and 4.5 in the closed

direction to 3.0 in the open direction

and 3.0 in the closed direction. This was done to attain the target thrust

values which are lower than the

operator's design maximum.

1,4 The close-to-open bypass required

adjustment to properly cover the

unseating of the valve.

3,4 The torque switch was found to be out of

balance by a factor of 2.5 to 1.0. This

condition was corrected at the time of

the test.

4 At the present torque switch setting

this valve is generating approximately

75,000 pounds of total thrust which is

within 10% of the operator's maximum

designed thrust. (See Recommendation

#1).

4 The operator exhibits a slight spring

pack relaxation after the valve has been

driven into the seat. (See

Recommendation 12).

Recommendations

1. A torque switch limiter plate needs to be installed at a torque switch

setting of 3.0 to prevent a torque switch setting that would not

protect the operator from developing excessive thrusts.
85

Test I.D. Valve #7

2. This relaxation is caused by a spring pack force on the worm. Since

the spring pack compression forces the torque switch contact open,

relaxation of the spring pack could allow the torque switch contacts

to reclose. A review of the control circuit should be conducted to

determine whether reclosure of the torque switch contacts would allow

the motor to re-energize, causing a hammering effect within the

operator.
86

TEST TD: VALVE #7

SYSTEM

SYSTEM : N/A

FLOW :0

TEMP : AMBIENT

PRESS ATMOSPHERIC

SFTY REL'D: N/A

OPERATOR

TYPE : SMB

SIZE : 2

SERIAL IO. : 103887

ORDER IO. : 339961A

ORIENTATION; VERTICAL

ELECTRICAL VALVE

CONTROL CIR VOLTS: 125

AC/DC AC

ID. NO.

TYPE

OPEN CONTROL

CLOSE CONTROL

MCC

SW. SENSING CIR.

LIMIT

TORQUE

N/A

VOLTAGE

SIZE

BODY ORIENTATIO'

INITIAL POSITION

FINAL POSITION

COV-9B

GATE

18

I. HORIZONTAL

I N/A

N/A

TORQUE SWITCH MOTOR

OPEN T.S. SETTING 4.0/3.0

CLOSE T.S. SETTING. 4.5/3.0

LIMITER PLATE : N/A

TS BALANCEABLE : YES

VOLTS

RATED AMPS:

SPEED I

HORSEPOWER:

460 AC

9.5

1705

N/A

TEST EQUIPMENT

LOAD CELL

AMP PROBE

MAINFRAME

TMD #

N a 200K--N/A

N a FLUKE(200) N/A

N N/A

a N/A
87

TEST ID: VALVE #7 BY: RLB DATE: 06-14-85

THRUST SIGNATURE ANALYSIS

TS-OC-01-01

STROKE TIME I 36.04 SECONDS

BYPASS TIME 0 SECONDS

THRUST AT CST a 64607 N

SEAT THRUST AT CST: 64520 #

AVE RUN THRUST #CPRELOAD

MAX RUN THRUST :CPRELOAD

INERTIAL THRUST * 21 .

TOTAL THRUST z 75303 N

TORQUE SW. SETTINGs 4.5/3.0

TS-CO-01-02

STROKE TIME a 36.22 SECONDS

BYPASS TIME a 3.6 SECONDS

PROTECTION MARGIN a 2.52 SECONDS

UNSEATING TIME a 1.09 SECONDS

AVE RUN THRUST :CPRELOAD

MAX RUN THRUST aCPRELOAD

UNSEATING THRUST : 17912 N

THRUST AT CST . N/A

TORQUE SW. SETTING. 4.0/3.0

SPRING PACK CALIBRATION SIGNATURE ANALYSIS

TL-CAL-01-05 K-FACTORt 17391 /V PRELOAD: 14000 

MOTOR CURRENT SIGNATURE ANALYSIS

CS-OC-01-03

STROKE TIME

PEAK INRUSH

AVE. RUN CURRENT

MAX. RUN CURRENT

SEATING CURRENT

a 36.38 SECONDS

a 15.8 AMPERES

i 6.35 AMPERES

a 6.35 AMPERES

a 9.45 AMPERES

CS-CO-01-04

STROKE TIME

PEAK INRUSH

AVE. RUN CURRENT

MAX. RUN CURRENT

END CURRENT

a 36.24 SECONDS

* 18.8 AMPERES

a 6.9 AMPERES

i 6.9 AMPERES

a 6.5 AMPERES
TEST IDENTIFICATION: VALVE #7

STORAGE LOCATION : 01-01

PLOT NO. I

TMD SWITCHES: OPEN TO CLOSE

STROKE TIME

BYPASS TIME

: 36.04 SECONDS

: 0 SECONDS

AVE RUN THRUST :CPRELOAD

MAX RUN THRUST :(PRELOAD

THRUST AT CST : 64607 #

SEAT THRUST AT CST: 64520 i

INERTIAL THRUST : 21 X

TORQUE SW. SETTING:4.5/3.0 TOTAL THRUST : 75303 #

_

V/D 2.500.0

Vy 0.o-6

T/D 5. 00.0

TL -5.58821 0I -

SWITCH

SIGNATURE

Vy

THRUST

SIGNATURE

LV/D 5.000.-I

Vy 0. -7

T/D 5. 00a0

TL -. 80.1

-

2

TL Vx
TEST IDENTIFICATION: VALVE #7

STORAGE LOCATION : 01-02

PLOT NO. 2

TMD SWITCHES: CLOSE TO OPEN

STROKE TIME

BYPASS TIME

UNSEATING TIME

PROTECTION MARGIN

: 36.22 SECONDS

: 3.6 SECONDS

: 1.08 SECONDS

: 2.52 SECONDS

AVE RUN THRUST : <PRELOAD

MAX RUN THRUST : CPRELOAD

UNSEATING THRUST : 17912 #

THRUST AT CST : A

TORQUE SW. SETTING: 4.0/3.0

. _

V/D 5. OOO-I

Vy O..-7

T/D 5. 00O0

TL -5.94001

SWITCH

SIGNATURE

V/D 2500O0

Vy . -6

T/D 5.00eO

TL -5.942el

a:

D0

vy

- .-

THRUST

SIGNATURE

.

.

TL 

Vx

TL Vx
TEST IDENTIFICATION: VALVE #7

STORAGE LOCATION : 01-03

PLOT NO. 3

STROKE TIME

MOTOR CURRENT SWITCHES: OPEN TO CLOSE

: 36.38 SECONDS PEAK INRUSH

AVE. RUN CURRENT

MAX. RUN CURRENT

SEATING CURRENT

: 15.8 AMPERES

: 6.35 AMPERES

: 6.35 AMPERES

: .45 AMPERES

, ,

I V/D 2.500a-l

Vy 0.n-7

T/D 5.00e0

TL -5. 942al _ . .

10

SWITCH

SIGNATURE

Vy

MOTOR

CURRENT

SIGNATURE

V/D 5.0009-1

Vy 0.9-7

T/D 5. 00.0

TL -5. 940e1

I I~~~~~~~~~~~~~~~ 1. 4

I L1

TL
TEST IDENTIFICATION: VALVE #7

STORAGE LOCATION : 01-04

PLOT NO. 4

MOTOR CURRENT SWITCHES: CLOSE TO OPEN

STROKE TIME : 36.24 SECONDS PEAK INRUSH

AVE. RUN CURRENT

MAX. RUN CURRENT

END CURRENT

: 18.8 AMPERES

X 6.9 AMPERES

: 6.9 AMPERES

: 6.5 AMPERES

SWITCH

SIGNATURE

-~~~~~~~~~~~~~~~~~~~I

Ir -~~~~~~~~~~~ It

Vy =~~~ 

V/D 2.500.-i

Vy 0..-7

T/D S. 00O

TL -5.942a1

V/D 5.0001

Vy 0..-7

T/O 5. 00O

TL -5.940a1

I

MOTOR

CURRENT

SIGNATURE L ,

I _ _.

,J L.

.- . . I _ ,

TL ;I Vx
TEST IDENTIFICATION: VALVE 7

STORAGE LOCATION : 01-05

PLOT NO. 

TMD LOAD CELL

PRELOAD: 14000

K-FACTOR: 179ii . .1

V/0 2. 500.IO

Vy 0..-8

T/D 2. 500,0

TL -2.0550ia1 s0

LOAD CELL

SIGNATURE

V/D 1.00000

Vy 0. u-7

T/D 2. 500.0

TL -2.0545a1

Vy F

THRUST

SIGNATURE

TL Vx
93

Test I.D. Valve #8

Code Comments

1,4 The close-to-open bypass switch required

adjustment to properly cover the

unseating of the valve.

2,3 Initial testing showed the operator was

delivering approximately 14,700 pounds

of total thrust in the open-to-close

direction, and approximately 13,500

pounds of total thrust in the

close-to-open direction. These

conditions are over and near,

respectively, the designed maximum

output of an SMB-00 which is 14,000

pounds. (See Recommendation #).

4 Both the current and thrust signatures

reveal a degradation from the beginning

of the open-to-close stroke that lasts

for 11.5 seconds. (See Recommendation

#2).

4 The as found open and close torque

switch settings were changed from 2.0 to

<2.0 to attain proper target thrust

values and stay under the designed

maximum thrust of the operator.

4 During equipment installation, it was

noted that the spring cartridge cap

appeared to be packed with grease. (See

Recommendation 3).

4 This operator exhibits a slight

relaxation of the spring pack after the

valve has fully seated. (See

Recommendation #4).

Recommendations

1. When convenient, re-evaluate your target thrust values due to the fact

that they are very near the maximum design output of the operator.

The thrust values that the operator is delivering at torque switch

trip are just over the minimum target thrust, however, the total
94

Test I.D. Valve #8

thrust being developed is within 10% of the design maximum of the

operator. Based on this data, a blocking device should be installed

on the torque switch with a setting of 2.0.

2. This condition does not, in our opinion, jeopardize the operability of

the valve at this time.

3. It should be noted that the Belleville springs do not require

lubrication to function properly.

4. This relaxation is caused by a spring pack force being exerted on the

worm. Since spring pack compression forces the torque switch contacts

open, relaxation of the spring pack could allow the torque switch

contacts to reclose. A review of the control circuit should be

conducted to determine whether reclosure of the torque switch contacts

would allow the motor to re-energize, causing a hammering effect

within the operator.
95

TEST ID: VALVE 8

SYSTEM

SYSTEM a N/A

FLOW 0

TEMP a AMBIENT

PRESS a ATMOSPHERIC

SFTY REL'Di N/A

OPERATOR

TYPE I SMB

SIZE 00

SERIAL NO. : 139892

ORDER NO. * 355695B

ORIENTATION: VERTICAL

ELECTRICAL VALVE

CONTROL CIR VOLTS:

AC/DC I

OPEN CONTROL

CLOSE CONTROL

MCC

SW. SENSING CIR. a

120

AC

LIMIT

TORQUE

N/A

VOLTAGE

ID. NO. I

TYPE :

SIZE I

BODY ORIENTATION:

INITIAL POSITION:

FINAL POSITION 

FWV-92A

GATE

6

HORIZONTAL

N/A

N/A

TORQUE SWITCH MOTOR

OPEN T.S. SETTING a 2.0/1.8

CLOSE T.S. SETTINGt 2.0/1.8

LIMITER PLATE a NA

TS BALANCEABLE a YES

VOLTS : 480 AC

RATED AMPS. 3.8

SPEED a 1700

HQRSEPOWERa N/A

LOAD CELL

AMP PROBE

MAINFRAME

TMD N

TEST EQUIPMENT

# a 50K--N/A

N a FLUKEN/A N/A

N a N/A

a N/A
96

TEST ID: VALVE #8 BY: RLB DATE: 06-14-85

THRUST SIGNATURE ANALYSIS

STROKE TIME

BYPASS TIME

THRUST AT CST

SEAT THRUST AT Cc

AVE RUN THRUST

MAX RUN THRUST

INERTIAL THRUST

TOTAL THRUST

TORQUE SW. SETTIt

TS-OC-01-17

* 27.25 SECONDS

: 0.53 SECONDS

: 13205 

ST: 12788 #

: 695 

: 2363 #

2 11 X

:14734 

4G: 2.0/1.8

TS-CO-01-18

STROKE TIME

BYPASS TIME

PROTECTION MARGIN :

UNSEATING TIME

AVE RUN THRUST I

MAX RUN THRUST

UNSEATING THRUST :

THRUST AT CST

TORQUE SW. SETTING:

27.13 SECONDS

4.27 SECONDS

2.84 SECONDS

1.43 SECONDS

173 

O 

2467 i

N/A

2.0/1.8

SPRING PACK CALIBRATION SIGNATURE ANALYSIS

TL-CAL-01-16 K-FACTOR: 6950 f/V PRELOAD: C RUNNING LOAD

MOTOR CURRENT SIGNATURE ANALYSIS

CS-OC-01-19

STROKE TIME

PEAK INRUSH

AVE. RUN CURRENT

MAX. RUN CURRENT

SEATING CURRENT

: 27.26 SECONDS

: 9.1 AMPERES

: 2.08 AMPERES

: 2.32 AMPERES

: 3.53 AMPERES

CS-CO-01-20

STROKE TIME

PEAK INRUSH

AVE. RUN CURRENT

MAX. RUN CURRENT

END CURRENT

: 27.13 SECONDS

: 9.83 AMPERES

: 2.15 AMPERES

: 2.27 AMPERES

: 2.27 AMPERES
TEST IDENTIFICATION: VALVE #8

STORAGE LOCATION 01-17

PLOT NO. I

TMD SWITCHES: OPEN TO CLOSE

STROKE TIME

BYPASS TIME

: 27.25 SECONDS

: 0.53 SECONDS

AVE RUN THRUST z 695 #

MAX RUN THRUST : 2363 

THRUST AT CST : 13205 *

SEAT THRUST AT CST: 12788 #

INERTIAL THRUST : 11 %

TORQUE SW. SETTING:2.0/1.8 TOTAL THRUST : 14734 #

r V/D 2. 50090

Vy 0. 0-5

T/D 5.00090

TL -4. 1 10a1

'.0

-4

-

V/D 5. 0000-1

Vy 0. e-7

TIC 5.00090

TL -4. 109nl - ~ ~ ~ ~ flW'-~ mm fflfm rnq,

Vy

SWITCH

SIGNATURE

THRUST

SIGNATURE

l). ._

-

_

TL Vx
TEST IDENTIFICATION: VALVE #8

STORAGE LOCATION : 01-18

PLOT NO. 2

TMD & SWITCHES: CLOSE TO OPEN

STROKE TIME

BYPASS TIME

UNSEATING TIME

PROTECTION MARGIN

: 27.13 SECONDS

: 4.27 SECONDS : 1.43 SECONDS

: 2.84 SECONDS

AVE RUN THRUST : 173 #

MAX RUN THRUST :0 #

UNSEATING THRUST : 2467 #

THRUST AT CST : N/A

TORQUE SW. SETTING: 2.0/1.8

%o

Vy SWITCH

SIGNATURE

THRUST

SIGNATURE

TL Vx
TEST IDENTIFICATION: VALVE #8

STORAGE LOCATION : 01-19

PLOT NO. 3

STROKE TIME

MOTOR CURRENT SWITCHES: OPEN TO CLOSE

: 27.26 SECONDS PEAK INRUSH

AVE. RUN CURRENT

MAX. RUN CURRENT

SEATING CURRENT

: 9.1 AMPERES

i 2.08 AMPERES s 2.32 AMPERES

i 3.53 AMPERES

I

SWITCH

SIGNATURE

Vy

MOTOR

CURRENT

SIGNATURE

I .'' I.

1 .: ! -hnnmm -f r~-- 

V/D .500a-1

Vy 0. a-7

T/D 5.000eO

TL -4.109al

V/D 5.000e-1

Vy 0. -7

T/D 5.0009O

TL -4.110a1

%O

TL
PLOT NO. 4

STROKE TIME

TEST IDENTIFICATION: VALVE #8

STORAGE LOCATION : 01-20

MOTOR CURRENT Sc SWITCHES: CLOSE TO OPEN

: 27.13 SECONDS PEAK INRUSH

AVE. RUN CURRENT

MAX. RUN CURRENT

END CURRENT

: 9.83 AMPERES

: 2.15 AMPERES

: 2.27 AMPERES

: 2.27 AMPERES

I-0

0

SWITCH

SIGNATURE

Vy

MOTOR

CURRENT

SIGNATURE

TL Vx
TEST IDENTIFICATION: VALVE #8

STORAGE LOCATION : 01-16

PLOT NO. 

TMD LOAD CELL

PRELOAD: RUNNING LOAD

K-FACTOR: 650 /V

V/D 2.500X0

Vy 0. o-6

T/D 6. 25e-1

TL -1.2550el 0

V/D 1. OOOO

Vy 0. a-7

T/D 6. 25e-1

TL -. 2545el

V

LOAD CY

SIGNATURE

THRUST

SIGNATURE

-............ ._. . . . . . ._ / TL -1. 2545e1

TL 

Vx

TL Vx 
102

Test I.D. Valve 19

Code Comments

1,4 The close-to-open bypass switch required

adjustment to properly cover the

unseating of the valve.

1,3 This valve, when tested at the as found

setting, developed a total thrust in the

open direction of 14,560 pounds

exceeding the maximum designed thrust of

this operator which is 14,000 pounds.

At the final torque switch setting, the

valve is delivering approximately 13,000

pounds of total thrust in both

directions. (See Recommendation 1).

4 During equipment installation, it was noted that the spring cartridge cap

cavity was full of grease. (See

Recommendation 2).

4 The initial torque switch settings were changed from 2.5 to 2.25 in the open

direction and 2.25 to 2.5 in the closed

direction to attain the desired target

thrust values.

4 This operator exhibits a slight spring

pack relaxation after the valve has

fully seated. (See Recommendation 3).

Recommendations

1. This data should be considered if it becomes necessary to change

torque switch settings in the future without the use of the MOVATS

Series 2000 System. Consideration should be given to installing a blocking device on the torque switch at an open setting of 2.5.

2. It should be noted that the Belleville springs do not require

lubrication to function properly.
103

Test I.D. Valve #9

3. This relaxation is caused by a spring pack force being exerted on the

worm. Since spring pack compression forces the torque switch contacts

to reclose. A review of the control circuit should be conducted to

determine whether reclosure of the torque switch contacts would allow

the motor to re-energize, causing a hammering effect within the

operator.
104

TEST IDi VALVE 9

SYSTEM

SYSTEM : N/A

FLOW : 0

TEMP : AMBIENT

PRESS : ATMOSPHERIC

SFTY REL'D: NA

OPERATOR

TYPE : SMB

SIZE 00

SERIAL NO. i 139893

ORDER NO. . 3556958

ORIENTATION: VERTICAL

ELECTRICAL VALVE

CONTROL CIR VOLTS.

AC/DC

OPEN CONTROL I

CLOSE CONTROL a

MCC

SW. SENSING CIR. :

120

AC

LIMIT

TORQUE

N/A

VOLTAGE

ID. NO. I

TYPE 3

SIZE

BODY ORIENTATION;

INITIAL POSITION:

FINAL POSITION :

FWV-92B

GATE

6'

HORIZONTAL

N/A

N/A

TORQUE SWITCH MOTOR

OPEN T.S. SETTING 

CLOSE T.S. SETTING.

LIMITER PLATE I

TS BALANCEABLE a

2.25/2.25

2.5/2.5

N/A

YES

VOLTS i 480 AC

RATED AMPSi 3.8

SPEED a 1700

HORSEPOWER .8

LOAD CELL

AMP PROBE

MAINFRAME

TMD 

TEST EQUIPMENT

N a 50K--N/A

N : FLUKE<200) N/A

N a N/A

N/A
105

TEST ID: VALVE #9 BY. RLB JR DATE: 6/14/85

THRUST SIGNATURE

TS-OC-2-2

STROKE TIME : 28.46 SECONDS

BYPASS TIME : 0.56 SECONDS

THRUST AT CST a 12233 #

SEAT THRUST AT CST: 12206 #

AVE RUN THRUST :(PRELOAD

MAX RUN THRUST tsPRELOAD

INERTIAL THRUST : 2 

TOTAL THRUST a 12501 #

TORQUE SW. SETTINGs 2.5/2.5

ANALYSIS

TS-CO-2-2

STROKE TIME : 28.12 SECONDS

BYPASS TIME : 5.32 SECONDS

PROTECTION MARGIN a 1.86 SECONDS

UNSEATING TIME a 3.46 SECONDS

AVE RUN THRUST -CPRELOAD

MAX RUN THRUST -CPRELOAD

UNSEATING THRUST : 6330 #

THRUST AT CST : N/A

TORQUE SW. SETTING: 2.25/2.25

SPRING PACK CALIBRATION SIGNATURE ANALYSIS

TL-CAL-2-1 K-FACTOR: 5366 /V PRELOADa 1260 

MOTOR CURRENT SIGNATURE ANALYSIS

CS-OC-2-3

STROKE TIME

PEAK INRUSH

AVE. RUN CURRENT

MAX. RUN CURRENT

SEATING CURRENT

a 28.1

3 10.96

a 2.14

: 2.48

a 2.42

SECONDS

AMPERES

AMPERES

AMPERES

AMPERES

CS-CO-2-3

STROKE TIME

PEAK INRUSH

AVE. RUN CURRENT

MAX. RUN CURRENT

END CURRENT

: 28.28 SECONDS

: 9.56 AMPERES

a 2.2 AMPERES

a 4.4 AMPERES

: 5.1 AMPERES
TEST IDENTIFICATION: VALVE #9

STORAGE LOCATION 2-2

PLOT NO. I

TMD SWITCHES: OPEN TO CLOSE

STROKE TIME : 28.46 SECONDS AVE RUN THRUST :CPRELOAD

MAX RUN THRUST :CPRELOAD

BYPASS TIME : 0.56 SECONDS THRUST AT CST t 12233 #

SEAT THRUST AT CST: 12206 

INERTIAL THRUST : 2 

TORQUE SW. SETTING:2.5/2.5 TOTAL THRUST : 12501 

, . . .

V/D 1. 0000

Vy 0. 9-7

T/D 5. 00Q0

TL -3. 734Q1 I-0

a%

SWITCH

SIGNATURE

Vy

... ~~~~~~V..

I -- sn - lllns'~~~~~~~~~~~~~~-

V/D 2. 500Q0

Vy 0. Q-6

T/I 5. 000

TL -4.214Q1

THRUST

SIGNATURE *

1

TL 

Vx

TL Vx
TEST IDEN7iFICATIO: VALV)E #9

STORAGE LOCATION : 2-2

PLOT NO. 2

STROKE TIME

BYPASS TIME

UNSEATING TIME

PROTECTION MARGIN

TMD & SWITCHES: CLOSE TO OPEN

: 28.12

: 5.32

: 3.46

: 1.86

SECONDS

SECONDS

SECONDS

SECONDS

AVE RUN THRUST : PRELOAD

MAX RUN THRUST : <PRELOAD

UNSEATING THRUST : 6330 #

THRUST AT CST : N/A

TORQUE SW. SETTING: 2.25/2.5

.1 V/D 1. 0000

Vy O.Q-7

T/D 5. OO0

TL -7. 51Be1 0 -i~ ~ 41

'-"""'wvvwm7

V/D 2. 500O

Vy 0. 0-8

T/D 5. 0O0

TL -7.514a1 SWITCH

SIGNATURE

THRUST

SIGNATURE

Vy IF - . . I

It

TL 

Vx

TL Vx
TEST IDENTIFICATION: VALVE 9

STORAGE LOCATION : 2-3

PLOT NO. 3

MOTOR CURRENT & SWITCHES: OPEN TO CLOSE

STROKE TIME 28.1 SECONDS PEAK INRUSH

AVE. RUN CURRENT

MAX. RUN CURRENT

SEATING CURRENT

10.96 AMPERES : 2.14 AMPERES

2.48 AMPERES

: 2.42 AMPERES

V/D 1.000.-1

IVY 0. a-8

1T/D 5. 00.0

TL -3. 7701

1 I - _ _ _ _ _ _

F --- 1*~~~~~~~~~~~~~~~ H~~~~~~~~~~~~~~~~~~~~~~~~~~

0

Vy

MOTOR CURRENI

SIGNATURE

TL
TEST IDENTIFICATION: VALVE #9

STORAGE LOCATION I 2-3

PLOT NO. 4

MOTOR CURRENT SWITCHES: CLOSE TO OPEN

STROKE TIME : 28.28 SECONDS PEAK INRUSH

AVE. RUN CURRENT

MAX. RUN CURRENT

END CURRENT

: 9.S6

:2.2

: 4.4

:5.1

AMPERES

AMPERES

AMPERES

AMPERES

V/O 1.000a-I

_Vy O.e-8

T/D 5. 00O0

TL -7.870a1

-I

I

P10

vy FMOTOR

SIGNAT

CURRENI

URE

TL 

Vx

TL Vx
TEST IDENTIFICATION: ALYE #9

STORAGE LOCATION : 2-1

PLOT NO. 5

TMD LOAD CELL

PRELOAD: 1260 #

K-FACTOR: 5366 #/V

Vy

V/D 1. 0000

_Vy O..-7

T/O 2.500QO

TL -2.0635el

V/D 2.500eS

[- _ ~~~~~~~Vy O. e-6

l ~~~~~~~~~T/D 2. 500eO

l ~~~~~~~~~TL -2.0830al

1.

iL Vx

. . .. . .J 

I0

LOAD CELL

SIGNATURE

THRUST

SIGNATURE

TL Vx
ill

Test I.D. Valve #10

Code Comments

1,4 During equipment installation, it was

noted that the torque switch was

improperly installed. The torque switch was correctly reinstalled and the test

was continued.

3,4 The torque switch was found to be out of

balance by a factor of 2.0 to 1.0. This

condition was corrected at the time of

the test.

4 During equipment installation, it was

noted that the spring cartridge cavity

had oil in it. (See Recommendation l).

4 During testing on this valve, the torque

switch settings were changed from 2.5 to

3.5 in the open direction, and 3.0 to

3.5 in the closed direction. This was

done to attain the target thrust values.

Recommendations

1. Consideration should be given to sampling the grease in this operator

and performing a chemical analysis to determine if it has degraded to

a point where the lubricating quality has been reduced.
112

TEST ID: VALVE 10

SYSTEM

SYSTEM

FLOW

TEMP

PRESS

SFTY REL'

: N/A

: 0

: AMBIENT

: ATMOSPHERIC

D: N/A

OPERATOR

TYPE : SB

SIZE 3

SERIAL NO. : 289880

ORDER NO. : 3DZ555A

ORIENTATION: VERTICAL

ELECTRICAL VALVE

CONTROL CIR VOLTS:

AC/DC

OPEN CONTROL

CLOSE CONTROL

MCC

SW. SENSING CIR. :

120

AC

LIMIT

TORQUE

N/A

VOLTAGE

ID. NO.

TYPE

SIZE

BODY ORIENTATION:

INITIAL POSITION:

FINAL POSITION :

FWV-5A

GATE

20

HORIZONTAL

N/A

N/A

TORQUE SWITCH MOTOR

OPEN T.S. SETTING :

CLOSE T.S. SETTING:

LIMITER PLATE

TS BALANCEABLE

2.5/3.5

3.0/3.5

4.25

YES

VOLTS : 460 AC

RATED AMPS: 26

SPEED : 3480

HORSEPOWER: NA

LOAD CELL

AMP PROBE

MAINFRAME

TMD 

TEST EQUIPMENT

: 200K--N/A

* : FLUKE(200) NA

# : N/A

: N/A
113

TEST ID: VALVE 10 BY: RLB DATE: 06-14-85

THRUST SIGNATURE ANALYSIS

TS-OC-01-07

STROKE TIME : 28.08 SECONDS

BYPASS TIME a 1.68 SECONDS

THRUST AT CST : 68962 N

SEAT THRUST AT CST: 68962 N

AVE RUN THRUST :CPRELOAD

MAX RUN THRUST :(PRELOAD

INERTIAL THRUST a 8 

TOTAL THRUST a 75212 N

TORQUE SW. SETTING: 3.0/3.5

TS-CO-01-08

STROKE TIME

BYPASS TIME

PROTECTION MARGIN

UNSEATING TIME

AVE RUN THRUST

MAX RUN THRUST

UNSEATING THRUST

THRUST AT CST

TORQUE SW. SETTING

* 26.5 SECONDS

a 3.49 SECONDS

a 2.14 SECONDS

a 1.35 SECONDS

s(PRELOAD

(<PRELOAD

: 50275 

: N/A

ii 2.5/3.5

SPRING PACK CALIBRATION SIGNATURE ANALYSIS

TL-CAL-01-06 K-FACTOR: 12500 N/V PRELOAD: 6400 

MOTOR CURRENT SIGNATURE ANALYSIS

CS-OC-01-09

STROKE TIME

PEAK INRUSH

AVE. RUN CURRENT

MAX. RUN CURRENT

SEATING CURRENT

: 28.37 SECONDS

a 183 AMPERES

a 15.3 AMPERES

a 15.3 AMPERES

: 70.2 AMPERES

CS-CO-O 1-10

STROKE TIME

PEAK INRUSH

AVE. RUN CURRENT

MAX. RUN CURRENT

END CURRENT

a 26.55 SECONDS

a 183 AMPERES

* 13.9 AMPERES

s 14.1 AMPERES

: 14.2 AMPERES
TEST IDENTIFICATION: VALVE #10

STORAGE LOCATION : 01-07

PLOT NO. I

TMD SWITCHES: OPEN TO CLOSE

STROKE TIME : 28.08 SECONDS AVE RUN THRUST :-.PRELOAD

MAX RUN THRUST :<PRELOAD

BYPASS TIME : 1.68 SECONDS THRUST AT CST 3 68962 1

SEAT THRUST AT CST: 68962 i

INERTIAL THRUST 8 

TORQUE SW. SETTING:3.0/3.5 TOTAL THRUST s 75212 i

I I .

SWITCH

SIGNATURE

Vy

THRUST

SIGNATURE

i L

...... ~I L n * t 1 -'I- qn- @ -f V/D 1.O000

_Vy 0. 0-7

T T/D 5.0000TL -4.153.1

V/D 2.500.0

Vy 0. -B

T/D 5.000a0

TL -4. 154.1 P-

-PI

TL 

Vx

TL Vx
TEST IDENTIFICATION: VALVE 10

STORAGE LOCATION I 01-08

PLOT NO. 2

TMD SITCHES: CLOSE TO OPEN

STROKE TIME

BYPASS TIME

UNSEATING TIME

PROTECTION MARGIN

X 26.5 SECONDS

X 3.49

: 1.35

: 2.14

SECONDS

SECONDS

SECONDS

AVE RUN THRUST : (PRELOAD

MAX RUN THRUST : (PRELOAD

UNSEATING THRUST ; 50275 #

THRUST AT CST : NA

TORQUE SW. SETTING: 2.5/3.5

- Cat~~~~ir

V/D 2. 50O

Vy 0. aT/D 5.OOO00

TL -4. 154.1

SWITCH

SIGNATURE

IU-f -'s7X1l -onto I...... -2111 .

i . V/o 1. oo.0

Vy 0. e-7

T/D 5. 000.0

TL -4.153al.

VyF INt

I

THRUST

SIGNATURE

-

TL
TEST IDENTIFICATION: VALVE #10

STORAGE LOCATION : 01-09

PLOT NO. 3

MOTOR CURRENT SWITCHES: OPEN TO CLOSE

STROKE TIME : 28.37 SECONDS PEAK INRUSH

AVE. RUN CURRENT

MAX. RUN CURRENT

SEATING CURRENT

: 18.3 AMPERES

: 1.53 AMPERES : 1.53 AMPERES

: 7.02 AMPERES

t. * Y

L.. *- -mfnnmnl I-wq~nY 

V/D 2.500X-1

Vy 0. 2-7

T/D 5. 000a

TL -4.154al SWITCH _

SIGNATURE 

Vy - 7

V/D 1.00000 !

Vy O.Q-7

T/D 5.000e

TL -4.153el

Ia%

MOTOR

CURRENT

SIGNATURE

TL 

Vx

TL Vx
TEST IDENTIFICATION: VALVE 10

STORAGE LOCATION 1 01-10

PLOT NO. 4

STROKE TIME

MOTOR CURRENT SWITCHES: CLOSE TO OPEN

i 26.55 SECONDS PEAK INRUSH : 18.3 AMPERES

AVE. RUN CURRENT : 1.39 AMPERES

MAX. RUN CURRENT : 1.41 AMPERES

END CURRENT : 1.42 AMPERES

SWITCH

SIGNATURE

Vy 

V/D 2.500.-1

Vy 0.0-7

T/D 5.0000

(Ito TL -4. 154.l

V/D 1. 000.0

Vy 0. a-7

T/D 5. 000.0

TL -4. 153.1

I .Vl

OMR

CURRENT

SIGNATURE

TL Vx
TEST IDENTIFICATION: VALVE #10

'STORAGE LOCATION : 01-06

PLOT NO. 

TMD LOAD CELL

PRELOAD: 6400 #

K-FACTOR: 12500 "/V

*1*

V/D 2. 500eO

Vy 0. .-8

T/D 1. 250.0

TL -1.2290.1

LOAD CELL

SIGNATURE

Vy

THRUST

SIGNATURE

V/D 1. 000Q0

Vy 0. e-7

T/D 1. 250.0

TL -1.2285a1

TL 

Vx

TL Vx
119

Test I.D. Valve ll

Code Comments

1,4 The close-to-open bypass switch required

adjustment to properly cover the

unseating of the valve.

3,4 Initial testing showed the torque switch

to be out of balance by a factor of 2.2

to 1.0. This condition was corrected at

the time of testing.

4 During testing to achieve the correct

thrust value the open torque switch

setting was changed from 3.0 to 2.5.

4 During equipment installation it was

noted that the spring cartridge cap was full of grease. (See Recommendation No.

1.)

4 On the analysis sheet it is obvious there

is a difference in stroke times of

approximately 1.4 seconds. This

condition was found to be inherent in the

SB operators due to the compensating

spring pack.

4 In the last two seconds of the

close-to-open stroke the running load and

running current both drop slightly

signaling a "freeing-up" of the

stem/valve or compensating spring pack.

Recommendations

1. It should be noted that the Belleville springs do not require

lubrication to function properly.
120

TEST ID: VALVE #11

SYSTEM

SYSTEM . N/A

FLOW 0

TEMP : AMBIENT

PRESS : ATMOSPHERIC

SFTY REL'D: N/A

OPERATOR

TYPE : SB

SIZE 3

SERIAL NO. a 289881

ORDER NO. , 30Z555A

ORIENTATION: VERTICAL

ELECTRICAL VALVE

CONTROL CIR VOLTS.

AC/DC a

OPEN CONTROL a

CLOSE CONTROL a

MCC a

SW. SENSING CIR. s

120

AC

LIMIT

TORQUE

N/A

VOLTAGE

ID. NO.

TYPE

SIZE I

BODY ORIENTATION.

INITIAL POSITION:

FINAL POSITION :

FWV-SB

GATE

20

HOR1ZONTAL

N/A

N/A

TORQUE SWITCH MOTOR

OPEN T.S. SETTING 3.0/2.5

CLOSE T.S. SETTINGt 2.5/2.5

LIMITER PLATE a 4.5

TS BALANCEABLE a YES

VOLTS a

RATED AMPS:

SPEED I

HORSEPOWER,

460

26

3480

N/A

AC

LOAD CELL

AMP PROBE

MAINFRAME

TMD 

TEST EQUIPMENT

* 1 200K--N/A

* a FLUKE(200) N/A

i M/A
121

TEST ID: VALVE #11 BY: RLB DATE: 06-14-85

THRUST SIGNATURE ANALYSIS

TS-OC-01-12

STROKE TIME : 29.13 SECONDS

BYPASS TIME : 1.6 SECONDS

THRUST AT CST : 72042 N

SEAT THRUST AT CST: 72042 N

AVE RUN THRUST :CPRELOAD

MAX RUN THRUST :<PRELOAD

INERTIAL THRUST : 18 *C

TOTAL THRUST 83980 N

TORQUE SW. SETTINGs 2.5/2.5

TS-CO-01-13

STROKE TIME : 27.67 SECONDS

BYPASS TIME : 3.36 SECONDS

PROTECTION MARGIN : 2.06 SECONDS

UNSEATING TIME : 1.3 SECONDS

AVE RUN THRUST -(PRELOAD

MAX RUN THRUST :CPRELOAD

UNSEATING THRUST : 39763 N

THRUST AT CST a N/A

TORQUE SW. SETTING' 3.0/2.5

SPRING PACK CALIBRATION SIGNATURE ANALYSIS

TL-CAL-O1-1I K-FACTORs 19100 /V PRELOADs 11400

MOTOR CURRENT SIGNATURE ANALYSIS

CS-OC-01-14

STROKE TIME : 29.19

PEAK INRUSH a 188.4

AVE. RUN CURRENT a 14.7

MAX. RUN CURRENT : 14.7

SEATING CURRENT a 45.1

SECONDS

AMPERES

AMPERES

AMPERES

AMPERES

CS-CO-01-15

STROKE TIME

PEAK INRUSH

AVE. RUN CURRENT

MAX. RUN CURRENT

END CURRENT

: 27.71

* 190.3

: 14.3

: 14.3

: 13.8

SECONDS

AMPERES

AMPERES

AMPERES

AMPERES
TEST IDENTIFICATION: VALVE 11

STORAGE LOCATION : 01-12

PLOT NO. I

TMD SWITCHES: OPEN TO CLOSE

STROKE TIME : 29.13 SECONDS AVE RUN THRUST :CPRELOAD

MAX RUN THRUST :CPRELOAD

BYPASS TIME : 1.6 SECONDS THRUST AT CST : 72042 4

SEAT THRUST AT CST: 72042 4

INERTIAL THRUST : 18 

TORQUE SW. SETTING:2.5/2.5 TOTAL THRUST : 83980 4

.

I R V/D 5.000e-I

Vy 0. 0-7

T/D 5. OOOQ0

TL -4. o91 -

|w2|§Illlllgulllllllll... W19

SWITCH

SIGNATURE

Vy

THRUST

SIGNATURE

V/D 2. 500O0

Vy 0. Q-6

T/D 5.000.0

TL -4. 110I

_-' ' ' ' ' ' ~~~~~ ' ' ' '- ' ' ~~~~ ' -- Il T

TL
TEST IDENTIFICATION: VALVE 11

STORAGE LOCATION : 01-13

PLOT NO. 2

STROKE TIME

BYPASS TIME

UNSEATING TIME

PROTECTION MARGIN

TMD SWITCHES:

: 27.67 SECONDS

CLOSE TO OPEN

AVE RUN THRUST

MAX RUN THRUST a

UNSEATING THRUST : THRUST AT CST

TORQUE SW. SETTING:

: 3.36

: 1.3

: 2.06

SECONDS

SECONDS

SECONDS

(PRELOAD

CPRELOAD

39763 #

N/A

3.0/2.5

P.-

TL .. ' Vx.
TEST IDENTIFICATION: VALVE 11

STORAGE LOCATION : 01-14

PLOT NO. 3

STROKE TIME

MOTOR CURRENT & SWITCHES: OPEN TO CLOSE

: 29.19 SECONDS PEAK INRUSH s 188.4 AMPERES

AVE. RUN CURRENT : 14.7 AMPERES

MAX. RUN CURRENT : 14.7 AMPERES

SEATING CURRENT : 45.1 AMPERES

SWITCH

SIGNATURE

Vy

MOTOR

CURRENT

SIGNATURE

. . . . ~~~V/D 5.000OQ-i

Vy 0.9-7

T/D 5. OOOQO

TL -4. 11001

V/D 5.000a-l

* . .- -. - .- -. - Vy O.9-7

T/D 5.OOOO

TL -4. 109.1

TL Vx~ ~ I

TL Vx
TEST IDENTIFICATION: VALVE 11

STORAGE LOCATION : 01-15

PLOT NO. 4

STROKE TIME

MOTOR CURRENT SWITCHES: CLOSE TO OPEN

: 27.71 SECONDS PEAK INRUSH

AVE. RUN CURRENT

MAX. RUN CURRENT

END CURRENT

: 190.3 AMPERES

: 14.3 AMPERES

: 14.3 AMPERES

: 13.8 AMPERES

_ ~ ~~ I I , 

SWITCH

SIGNATURE

Vy

MOTOR

CURRENT

SIGNATURE

V/D 5.000a-1

_Vy 0. e-7

T/D 5.000.0

TL -4.1 10el

V/D 5.000e-I

1 Vy O.a-7

_ T/D 5. OOOO

i o TL -4. 109.l

TL
TEST IDENTIFICATION: VALVE 11

STORAGE LOCATION : 01-11

PLOT NO. 5

TMD LOAD CELL

PRELOAD: 11400 #

K-FACTOR: 19100 #/V

I

V/O 2. 500QO

Vy 0. e-6

T/D . 5e-1

TL -1.2870e1 o'

LOAD CELL

SIGNATURE

Vy

THRUST

SIGNATURE

.~~~~~~~~~~~_ l.

V/D 1. 000.0

Vy 0. a-7

T/D 6. 25e-1

TL -1.2855a1 _-

_ 

.

TL 

Vx

TL Vx
127

Test I.D. Valve #12

Code Comments

4 The operator exhibits a slight spring

pack relaxation after the valve has been

driven into the seat. (See

Recommendation No. 1.)

4 The close-to-open bypass switch required

adjustment to properly cover the

unseating of the valve.

4 The torque switch was found to be out of

balance by a factor of 1.7 to 1.0. This

condition was corrected at the time of

testing.

4 The torque switch settings were changed

from 3.25 to >3.0 in the open direction

and 3.0 to >3.0 in the closed direction

to achieve the correct thrusts.

Recommendations

1. This .elaxation is caused by a spring pack force extended on the worm.

Since spring pack compression forces the torque switch contacts open,

relaxation of the spring pack could allow the torque switch contact to

reclope. A review of the control circuit should be conducted to

determine whether reclosure of the torque switch would allow the motor

to re-energize, causing a hammering effect within the operator.
128

TEST ID: VALVE #12

SYSTEM

SYSTEM : N/A

FLOW : 0

TEMP : AMBIENT

PRESS : ATMOSPHERIC

SFTY REL'D: N/A

OPERATOR

TYPE : SMB

SIZE : 3

SERIAL NO. : 103282

ORDER NO. : 337070A

ORIENTATION: VERTICAL

ELECTRICAL VALVE

CONTROL CIR VOLTS:

AC/DC

OPEN CONTROL I

CLOSE CONTROL

MCC

SW. SENSING CIR. :

120

AC

LIMIT

TORQUE

NA

CURRENT

ID. NO.

TYPE

SIZE

BODY ORIENTATION:

INITIAL POSITION:

FINAL POSITION :

COV-1

N/A

12

HORIZONTAL

N/A

N/A

TORQUE SWITCH MOTOR

OPEN T.S. SETTING 3.25/>3.0

CLOSE T.S. SETTING: 3.0/>3.0

LIMITER PLATE : NONE

TS BALANCEABLE : YES

VOLTS : 460 AC

RATED AMPS: 11.4

SPEED : 1740

HORSEPOWER: 6.6

LOAD CELL

AMP PROBE

MAINFRAME

TMD #

TEST EQUIPMENT

# : 200K--N/A

# : FLUKE200 N/A

: N/A

: N/A
129

TEST ID: VALVE #12 BY: RLBJ DATE: 06-17-85

THRUST SIGNATURE ANALYSIS

TS-OC-02-18

STROKE TIME X 130.2 SECONDS

BYPASS TIME : 0.95 SECONDS

THRUST AT CST . 127982 #

SEAT THRUST AT CST: i27982 U

AVE RUN THRUST :CPRELOAD

MAX RUN THRUST :CPRELOAD

INERTIAL THRUST : 3 

TOTAL THRUST : 131807 #

TORQUE SW. SETTING: 3.2/3.2

TS-CO-02-19

STROKE TIME : 129.35 SECONDS

BYPASS TIME : 17.05 SECONDS

PROTECTION MARGIN 13.65 SECONDS

UNSEATING TIME : 3.4 SECONDS

AVE RUN THRUST :(PRELOAD

MAX RUN THRUST :CPRELOAD

UNSEATING THRUST : 70264 N

THRUST AT CST a N/A

TORQUE SW. SETTING: 3.2/3.2

SPRING PACK CALIBRATION SIGNATURE ANALYSIS

TL-CAL-02-17 K-FACTOR: 23180 #/V PRELOAD: 24600 

MOTOR CURRENT SIGNATURE ANALYSIS

CS-OC-02-20

STROKE TIME

PEAK INRUSH

AVE. RUN CURRENT

MAX. RUN CURRENT

SEATING CURRENT

: 130.35 SECONDS

: 53.1 AMPERES

: 10.3 AMPERES

:10.3 AMPERES

:24.6 AMPERES

CS-CO-03-01

STROKE TIME

PEAK INRUSH

AVE. RUN CURRENT

MAX. RUN CURRENT

END CURRENT

: 129.4 SECONDS

: 62.9 AMPERES

: 9.46 AMPERES

: 9.46 AMPERES

: 9.46 AMPERES
TEST IDENTIFICATION: VALVE #12

STORAGE LOCATION 02-18

PLOT NO. 1

TMD SWITCHES: OPEN TO CLOSE

STROKE TIME : 130.2 SECONDS AVE RUN THRUST :CPRELOAD

MAX RUN THRUST :<PRELOAD

BYPASS TIME : 0.95 SECONDS THRUST AT CST : 127982 #

SEAT THRUST AT CST: 127982 #

INERTIAL THRUST : 3t %

TORQUE SW. SETTING:3.2/3.2 TOTAL THRUST : 131807 #

SWITCH

SIGNATURE

Vy

THRUST

SIGNATURE

L !IV 

_ ~~11-_. I , *, *--- *---- - -I

- FI

V/D 2. 500QO

Vy 0. a-6

T/D 2.500al

TL -2.0765a2

V/D 1. 00020

Vy 0. a-7

T/D 2.500a1

TL -2.0770a2

0

TL Vx
TEST IDENTIFICATION: VALVE #12

STORAGE LOCATION .: 02-19

PLOT NO. 2

TMD SWITCHES: CLOSE TO OPEN

STROKE TIME

BYPASS TIME

UNSEATING TIME

PROTECTION MARGIN

s 129.35 SECONDS

s 17.05 SECONDS : 3.4 SECONDS

: 13.65 SECONDS

AVE RUN THRUST I (PRELOAD

MAX RUN THRUST : PRELOAD

UNSEATING THRUST : 70264 #

THRUST AT CST : N/A

TORQUE SW. SETTING: 3.2/3.2

. .~~~~~~~~~~~~~~~~~~~~~~~~ I...

SWITCH

SIGNATURE

Vy

THRUST

SIGSATURE

I'-1

1 . . ,, ._ ,, . .. I -.- '

I

V/O 2.500O

Vy 0.,-

T/D 2. 5001

TL -2. 0765.2

V/D 1. 0000

Vy 0. e-7

T/D 2. 500.1

TL -2. 0770e2 _-

TL 

Vx

TL Vx
TEST IDENTIFICATIONs VALVE #12

STORAGE LOCATION : 02-20

PLOT NO. 3

MOTOR CURRENT SWITCHES: OPEN TO CLOSE

STROKE TIME : 130.35 SECONDS PEAK INRUSH

AVE. RUN CURRENT

MAX. RUN CURRENT

SEATING CURRENT

: 53.1

: 10.3

: 10.3

: 24.6

AMPERES

AMPERES

AMPERES

AMPERES

I i

V/D 1.000e-I

Vy 0. 0-8

T/D 2. 500Q1

TL -2.0610.2

SWITCH

SIGNATURE

Vy

MOTOR

CURRENT

SIGNATURE

I.

V/0 1.00090c

Vy 0. a-7

T/ 2.500.1

TL -2.0615a2

TL 

Vx

TL Vx
TEST IDENTIFICATION: VALVE 12

STORAGE LOCATI rON : 03-01

PLOT NO. 4

MOTOR CURRENT SWITCHES: CLOSE TO OPEN

STROKE TIME : 129.4 SECONDS PEAK INRUSH

AVE. RUN CURRENT

MAX. RUN CURRENT

END CURRENT

1 62.9

: 9.46

: 9.46

s 9.46

AMPERES

AMPERES

AMPERES

AMPERES

I I _

.\

V/D 1.000.-i

Vy 0. -8

T/D 2. 500.1

TL -2.0610.2 bASWITCH

SIGNATURE

Vy F

V/D 1. 000.0

Vy 0. e-7

T/D 2. 500,1

TL -2.0615e2 |

I

MOTOR

CURRENT

SIGNATURE . . _ . . _

TL
TEST IDENTIFICATION: VALVE 12

STORAGE LOCATION 02-17

PLOT NO. 5

TMD & LOAD CELL

PRELOAD: 24600 #

K-FACTOR: 23180 #/V

I V/D 2. 500i0

Vy 0. a-5

T/D 2.500.0

TL -2.0765.1 w

V/D 1.000o0

Vy 0. -7

LOAD CELL T/0 2. 500ca0

SIGNATURE ./TL / -2.0770.1l

Vyt

THRUST L

SIGNATURE | _ .

TL Vx
135

Test I.D. Valve 13

Code Comments

1,4 The close-to-open bypass switch required

adjustment to properly cover the

unseating of the valve.

4 The torque switch was found to be out of

balance by a factor of 1.2 to 1.0. This

condition was corrected at the time of

testing.

4 During testing, the open torque switch

setting was changed from 2.25 to >1.5

and the closed torque switch setting

changed from >2.0 to >1.5 to obtain

target thrust loads.

Recommendations

1. No corrective action necessary at this time.
136

TEST ID: VALVE #13

SYSTEM

SYSTEM : N/A

FLOW : 0

TEMP : AMBIENT

PRESS : ATMOSPHERIC

SFTY REL'D: N/A

OPERATOR

TYPE : SMB

SIZE : 

SERIAL NO. : 94927A

ORDER NO. : 336542K

ORIENTATION: VERTICAL

ELECTRICAL VALVE

CONTROL CIR VOLTS:

AC/DC

OPEN CONTROL

CLOSE CONTROL :

MCC

SW. SENSING CIR. :

120

N/A

LIMIT

TORQUE

N/A

VOLTAGE

ID. NO.

TYPE

SIZE

BODY ORIENTATION:

INITIAL POSITION:

FINAL POSITION :

MSV-lOB

GATE

6

HORIZONTAL

N/A

N/A

TORQUE SWITCH MOTOR

OPEN T.S. SETTING :

CLOSE T.S. SETTING:

LIMITER PLATE

TS BALANCEABLE

2.25/1.5

2.25/1.5

4.0

YES

VOLTS : 240 DC

RATED AMPS: 4.7

SPEED : 1900

HORSEPOWER: 1.08

LOAD CELL

AMP PROBE

MAINFRAME

TMD #

TEST EQUIPMENT

# : 50K--N/A

# : FLUKE(200) N/A

# : N/A

: N/A
137

TEST IDe VALVE 13 BY: RLBJ DATE: 06-17-85

THRUST SIGNATURE ANALYSIS

TS-OC-02-14

STROKE TIME : 26.51 SECONDS

BYPASS rIME O..3 SECONDiS

THRUST AT CST : 102S1.f

SEAT THRUST AT CST: 9872 

AVE PUI THRUST :<PRELOAD

M&k RUI THRUST :CPRELOAD

INERTIML THRUST : I %.

TOTAL THRUST : 11677 i

TORQUE SW. SETTING: 2.25/)1.5

TS-CO-02-13

STROKE TIME : 26.03 SECONDS

BYPASS TIME : 3.66 SECONDS

PROTECTION MARGIN : 2.15 SECONDS

UNtSEATING IME : 1.51 SECONDS

AVE RUN THRUST :PRELOAD

MAX RUN THRUST :<PRELOAD

UNSEATING THRUST : 2653 i

THRUST AT CST : N/A

TORQUE SW. SETTING: 2.25/>1.5

SPRING PACK CALIBRATION SIGNATURE ANALYSIS

TL-CAL-02-12 K-FACTOR: 6811 /V PRELOAD: 780 #

MOTOR CURRENT SIGN4ATURE ANALYSIS

CS-OC-02-t5

STROKE TIME : 26.56

PEAK INRUSH a 14.7

AVE. RUN CURRENT a 2.28

MAX. RUN CURRENT a 2.28

SEATING CURRENT a 11.4

SECONDS

AMPERES

AMPERES

AMPERES

AMPERES

CS-CO-02-16

STROKE TIME

PEAK INRUSH

AVE. RUN CURRENT

MAX. RUN CURRENT

END CURRENT

a 25.48 SECONDS

: 21.6 AMPERES

: 2.37 AMPERES

: 2.37 AMPERES

: 2.37 AMPERES
TEST IDENTIFICATION1: VALE #13

STORAGE LOCATION 02-14

PLOT NO. I

TMD SWITCHES: OPEN TO CLOSE

STROKE TIME

BYPASS TIME

26.51 SECONDS

0.3 SECONDS

AVE RUN THRUST .<PRELOAD

MAX RUN THRUST :<PRELOAD

THRUST AT CST : 10281 #

SEAT THRUST AT CST: 9872 

INERTIAL THRUST 11 %

TORQUE SW. SETTING:2.25/>'1.5 TOTAL THRUST 11677 #

iV/D 1. OOeo IVy 0. -7

|T/D 5. OOO2e

ITL -4. 274al

Iii

-4

I

VyI.

V/D 2. SOOQO

Vy 0. -6

T/D 5. OOOeO

TL -4. 273e1

F ~~~~~~~~~~~~~~~~~~~--IL...

TLTLVx Vx
TEST IDENTIFICATION: VALVE #13

STORAGE LOCATION : 02-13

PLOT NO. 2 . '. ITMD SWITCHES: CLOSE TO

STROKE TIME : 26.03 SECONDS

BYPASS TIME i 3.66 SECONDS

UNSEATING TIME : 1.51 SECONDS

PROTECTION MARGIN : 2.15 SECONDS

OPEN

AVE RUN THRUST : PRELOAD

MAX RUN THRUST : PRELOAD

UNSEATING THRUST : 2653 #

THRUST AT CST s N/A

TORQUE SW. SETTING: 2.25/)1.5

IV/D 1. OOOQO

Vy 0. 0-7

T/D 5.OOOQO

l _ ~~~~~~~~~~~TL -4.274el

V/D 2 500QO

_ | g r ~~~~~~~~~~~~~~~~~~Vy O.n-6~

T/D 5. 0OQO

1 L H 1~~~~~~~~~~~~~~~~IT-.7a

.. , . . .n - ..... 

IVy1

TL 

Vx

TL Vx
PLOT NO. 3

STROKE TIME

TEST IDENTIFICATION: VALVE 13

STORAGE LOCATION : 02-15

MOTOR CURRENT SWITCHES: OPEN TO CLOSE

: 26.56 SECONDS PEAK INRUSH

AVE. RUN CURRENT

MAX. RUN CURRENT

SEATING CURRENT

: 14.7 AMPERES

: 2.28 AMPERES

: 2.28 AMPERES

i 11.4 AMPERES

F

L

JV/D 1. 000.O

jVy O..-7

iT/O 5.0000

ITL -4.274.1

.!

-a

Li

V/O 5.0009-2

IVy .a-8

1T/D 5.00090

TL -4.273el

Vy[ i

I

W.- L% .. 0, -

Fw*

I , Do. -_ _s_ . _- 

L . -. . ---

,r - - r t-u- u

it

l~~~~~~~ 

TL Vx
PLOT NO. 4

STROKE TIME

TEST IDENTIFICATION: VALVE 13

STORAGE LOCATION : 02-1

MOTOR CURRENT SWITCHES: CLOSE TO OPEN

: 25.48 SECONDS PEAK INRUSH : 21.6 AMPERES

AVE. RUN CURRENT : 2.37 AMPERES

MAX. RUN CURRENT : 2.37 AMPERES

END CURRENT : 2.37 AMPERES

IVy

TL Vx
TEST IDENTIFICATIOI: '.!ALVE #13

STORAGE'LOCATION : 02-12

PLOT NO. 5

TMD LOAD CELL

PPELOAD: 780 #

K-FACTOR: 6811 #/V

V/D 1.OOOQO

Vy 0. 0-7

T/D 2.500.O

TL -2.1370e1 -

-

Vy 

I

V/O 2.500eO

Vy O.e-6

T/D 2.500GO

TL -2. 13651

-

Vx

I

TL
143

Test I.D. Valve #14

Code Comments

1,4 The close-to-open bypass switch required

adjustment to properly cover the

unseating of the valve.

2,4 The as found open torque switch setting

resulted in the operator developing

thrusts in excess of its design maximum.

The open torque switch setting was lowered from 2.5 to 2.0 to attain the

target thrust value.

4 During equipment installation, it was

noted that the spring cartridge cap was full of grease. (See Recommendation

f1).

Recommendations

1. It should be noted that the Belleville springs do not require

lubrication to function properly.
144

TEST ID: VALVE 14

SYSTEM

SYSTEM : N/A

FLOW : 0

TEMP : AMBIENT

PRESS : ATMOSPHERIC

SFTY RELD: N/A

OPERATOR

TYPE : SMB

SIZE : 

SERIAL NO. : 94926A

ORDER NO. : 336542K

ORIENTATION: VERTICAL

ELECTRICAL VALVE

CONTROL CIR VOLTS: 120

AC/DC : DC

OPEN CONTROL : LIMIT

CLOSE CONTROL : TORQUE

MCC : N/A

SW. SENSING CIR. : VOLTAGE

ID. NO.

TYPE

SIZE

BODY ORIENTATION:

INITIAL POSITION:

FINAL POSITION :

MSV-IOA

GATE

6"

HORIZONTAL

N/A

N/A

TORQUE SWITCH MOTOR

OPEN T.S. SETTING : 2.5/1.5

CLOSE T.S. SETTINGt 2.0/1.5

LIMITER PLATE : 4.0

TS BALANCEABLE : YES

VOLTS : 250 DC

RATED AMPS: 4.8

SPEED : 1900

HORSEPOWER: 1.0

TEST EQUIPMENT

LOAD CELL

AMP PROBE

MAINFRAME

TMD 

# : 5K--N/A

# : FLUKE(200) N/A

# : N/A

': N/A
145

TEST ID% VALVE 14 BY: RLBJ DATE: 06-17-85

THRUST SIGNATURE ANALYSIS

STROKE TIME

BYPASS TIME

THRUST AT CST

SEAT THRUST AT Cc

AVE RUN THRUST

MAX RUN THRUST

INERTIAL THRUST

TOTAL THRUST

TORQUE S. SETTIt

TS-OC-02-05

: 26.5 SECONDS

: 0 SECONDS

: 7358 

ST: 5727 

: 948 #

: 1630 

: 29 .

i9558 #

10: 1.5/1.5

TS-CO-02-05

STROKE TIME :

BYPASS TIME

PROTECTION MARGIN :

UNSEATING TIME I

AVE RUN THRUST

MAX RUN THRUST

UNSEATING THRUST :

THRUST AT CST

TORQUE SW. SETTING:

26.44 SECONDS

3.06 SECONDS

1.56 SECONDS

1.5 SECONDS

531 #

1365 

5272 #

N/A

1.5/1.5

SPRING PACK CALIBRATION SIGNATURE ANALYSIS

TL-CAL-02-04 K-FACTOR: 7586 /V PRELOAD: C RUNN ING LOA

MOTOR CURRENT SIGNATURE ANALYSIS

CS-OC-02-0

STROKE TIME

PEAK INRUSH

AVE. RUN CURRENT

MAX. R CURRENT

SEATING CURRENT

: 26.06 SECONDS

: t/A

: N/A

: N/A

: N/A

CS-CO-02-06

STROKE TIME

PEAK INRUSH

AVE. RUN CURRENT

MAX. RUN CURRENT

END CURRENT

: 26.06 SECONDS

: N/A

: N/A

: N/A

: N/A
TEST IDENTIFICATION: VALVE #14

STORAGE LOCATION : 02-05

PLOT NO. I

TMD SWITCHES: OPEN TO CLOSE

STROKE TIME : 26.5 SECONDS

BYPASS TIME : 0 SECONDS

TORQUE SW. SETTING:1.5/1.5

AVE RUN THRUST

MAX RUN THRUST

THRUST AT CST

SEAT THRUST AT

INERTIAL THRUST

TOTAL THRUST

: 948 #

: 1630 #

: 7358 #

CST: 5727 

29 

: 9558 #

-

IV/D 1. O0SDO

IVy D. -7

1T/D 5 00a

ITL -4. 136.1

WITCH '

IGNATURE - --

Vy 1

HRUST _ 

_ IGNATURE I *& - -L , - - ._

V/D 2. 500.O

Vy 0. o-6

T/D 5. OCIO

TL -4. 134.1

-I.

9

TL 

Vx

TL Vx
TEST IDEWTIFICATION: VALVE 14

STORAGE LOCATION I 02-05

PLOT NO. 2

TMD & SWITCHES: CLOSE TO OPEN

STROKE TIME

BYPASS TIME

UNSEATING TIME

PROTECTION MARGIN

: 26.44 SECONDS

3.06 SECONDS

: 1.5 SECONDS

: 1.56 SECONDS

AVE RUN THRUST : MAX RUN THRUST : UNSEATING THRUST : THRUST AT CST

TORQUE SW. SETTING:

531 4

1365 4

5272 

N/A

1 .5/1 .5

______ ______ ______ __ _I T _

V/D 1. 000a

Vy 0. e-7

T/D 5. 00aO

TL -7.854a1

L

I--

-J.

I

V/D 2. 500a

Vy 0. a-6

T/D 5. 0o

TL -7.852.1

dITCH

lGNATURE

iRUST

lGNATURE

Vy

_._._._d

F .4

. _ _ _I . . L 

TL Vx
TEST IDENTIFICATION : ALVE #14

STORAGE LOCATION 02-04

PLOT NO. 5

TMD LOAD CELL

PRELOAD: C RUNNING LOAD

K-FACTOR: 7586 #/V

1V/D 1.0000 I

_Vy 0. -7

TD 2.50Ow0

TL -2.0480a1 _

V/D 2.500aD 0C

Vy D.Q-6

T/D 2. 500D0

Vy a. ; TL -2. 0475.1

OAD CELL r

IGNATURE

RUST 

TL V x v I I I

TL Vx
149

Test I.D. Valve 15

Code Comments

3 During equipment installation, brass

filings were noted in the grease present

in the spring pack cavity. (See

Recommendation 1).

4 The initial torque switch settings were changed from 2.0 to 1.75 in the open

direction and 1.0 to >1.0 in the closed

direction to achieve the desired thrust

values.

Recommendations

1. This appears to be caused by worm gear wear, therefore, we recommend

monitoring this condition at normal maintenance intervals.
150

TEST ID: VALVE #15

SYSTEM

SYSTEM

FLOW I

TEMP

PRESS

SFTY REL'D:

N/A

0

AMBI ENT

ATMOSPHERIC

N/A

OPERATOR

TYPE : SmD

SIZE : 00

SERIAL NO. : 9445H2A

ORDER NO. : 336542R

ORIENTATION: VERTICAL

ELECTRICAL VALVE

CONTROL CIR VOLTS: 120

AC/DC : AC

OPEN CONTROL : LIMIT

CLOSE CONTROL : TORQUE

MCC : N/A

SW. SENSING CIR. : VOLTAGE

ID. NO. I

TYPE

SIZE

BODY ORIENTATION:

INITIAL POSITION:

FINAL POSITION :

ASV-4

GATE

4

HORIZONTAL

N/A

N/A

TORQUE SWITCH MOTOR

OPEN T.S. SETTING :

CLOSE T.S. SETTING:

LIMITER PLATE

TS BALANCEABLE

2.0/1.75

1.0/1. 1

NONE

YES

VOLTS

RATED AMPS:

SPEED

HORSEPOWER:

460 AC

2.3

1700

NA

LOAD CELL

AMP PROBE

MAINFRAME

TMD 

TEST EQUIPMENT

N : 50K--N/A

# : FLUKE(200) NA

# : NA

N/A
151

TEST ID. VALVE 15 BY. RLBJ DATE: 06-17-85

THRUST SIGNATURE ANALYSIS

TS-OC-02-09

STROKE TIME : 39.24 SECONDS

BYPASS TIME : 0.46 SECONDS

THRUST AT CST a 7048 P

SEAT THRUST AT CST: 7048 N

AVE RUN THRUST :CPRELOAD

MAX RUN THRUST :CPRELOAD

INERTIAL THRUST : 23 

TOTAL THRUST : 7874 N

TORQUE S. SETTING: 1.0/>1.0

TS-CO-02-08

STROKE TIME : 38.94 SECONDS

BYPASS TIME : 2.64 SECONDS

PROTECTION MARGIN : 2.34 SECONDS

UNSEATING TIME a 0.3 SECONDS

AVE RUN THRUST :CPRELOAD

MAX RUN THRUST a(PRELOAD

UNSEATING THRUST : 4172 8

THRUST AT CST : N/A

TORQUE SW. SETTING: 2.0/1.75

SPRING PACK CALIBRATION SIGNATURE ANALYSIS

TL-CAL-02-07 K-FACTOR: 3060 /V PRELOADa 3560 

MOTOR CURRENT SIGNATURE ANALYSIS

CS-OC-02-10

STROKE TIME X 39.3

PEAK INRUSH : 6.2

AVE. RUN CURRENT a 1.7

MAX. RUN CURRENT a 1.7

SEATING CURRENT a 2.2

SECONDS

AMPERES

AMPERES

AMPERES

AMPERES

CS-C0-02-11

STROKE TIME

PEAK INRUSH

AVE. RUN CURRENT

MAX. RUN CURRENT

END CURRENT

a 38.96 SECONDS

* 6.3 AMPERES

* 1.7 AMPERES

a 1.7 AMPERES

1.7 AMPERES
TEST IDENTIFICATION: VALVE 15

STORAGE LOCATION : 02-09

PLOT NO. I

TMD SWITCHES: OPEN TO CLOSE

STROKE TIME : 39.24 SECONDS AVE RUN THRUST :CPRELOAD

MAX RUN THRUST :(PRELOAD BYPASS TIME : 0.46 SECONDS THRUST AT CST : 7048 #

SEAT THRUST AT CST: 7048 #

INERTIAL THRUST 23 Y

TORQUE SW. SETTING:I.0/)1.O TOTAL THRUST z 7874 #

V/D 1.001

jVy 0. -7 

IT/D 1.000aQ

jTL -. 332Q1

_ i | ~~~~~~~~~~~~~~~~~~~V 2. 500 0

SWITCH F , 2. 500.0 i SIGNATURE ,T/D 1.OOQ1

Vy P TL -Q SSCQ Il

THRUST

SIGNATURE ''

I- ~~~~ ~ |_ -i 

TL Vx
TEST IDENTIFICATION: VALVE #15

STORAGE LOCATION : 02-08

PLOT NO. 2

TMD SWITCHES: CLOSE TO OPEN

STROKE TIME

BYPASS TIME

UNSEATING TIME

PROTECTION MARGIN

38.?4 SECONDS

: 2.64 SECONDS

: 0.3 SECONDS

: 2.34 SECONDS

AVE RUN THRUST I

MAX RUN THRUST I

UNSEATING THRUST : THRUST AT CST

TORQUE SW. SETTINGt

<PRELOAD

CPRELOAD

4172 #

N/A

2.0/1.75

V/D 1. 0000

Vy 0. 6-7

T/D 1. 000a1

TL -8.578a1

.......... ....... ............... ............... .. ......... , ._ 

I I '

1ifff" ' I' I11liii''I f1

11111111 - iii 1 i

V/D 2. 500a0

Yy 0. e-8

T/D 1. 000Q1

SWITCH TL -. 574a1

IGNATURE Vy tTHRUST

IGNATURE _ _ 

TL 

Vx

TL Vx
TEST IDENTIFICATION: VALVE #15

STORAGE LOCATION : 02-10

PLOT NO. 3

MOTOR CURRENT SWITCHES: OPEN TO CLOSE

STROKE TIME 39.3 SECONDS PEAK INRUSH

AVE. RUN CURRENT

MAX. RUN CURRENT

SEATING CURRENT

6.2 AMPERES

1.7 AMPERES

a 1.7 AMPERES a 2.2 AMPERES

V/D 2. * OO0a

Vy 0. a-7

T/O 1.000al

TL -8. 740al

n

I!

SWITCH

IGNATURE

i

I--

I M. -avIl jV/D 1.000.-i

- IVy o.w-B

T/D 1.000.1

iTL -8.73891

Vy

OTOR CURRENT

IGNATURE

I

_- _

TL Vx
TEST IDENTIFICATION: VALVE #15

STORAGE LOCATION : 02-11

PLOT NO. 4

MOTOR CURRENT & SWITCHES: CLOSE TO OPEN

STROKE TIME : 38.96 SECONDS PEAK INRUSH

AVE. RUN CURRENT

MAX. RUN CURRENT

END CURRENT

: 6.3

s 1.7

: 1.7

: 1.7

AMPERES

AMPERES

AMPERES

AMPERES

,:

I/O Y 1. 0000

JVy 0..i-7

1 T/D3 .OO00l

.TL -8. 740a1

. . _ : -j 0 :. 

II VD 1000.-1

I _D 000. '1. 

-iT, -8. 738.1

U'

SWITCH_

IGNATURE

vyF

OTOR CURRENT i

IGNATURE

I

l

*i ! .

TILV
TEST IDENTIFICATION: VALVE #15

STORAGE LOCATION z 02-07

PLOT NO. 5

TMD & LOAD CELL

PRELOADX 3560 #

K-FACTOR: 3060 #/V

1-

II

IV/D 1. o00oo

IVy . -7

i T/0 2. 500.0

ETL 2.1215e1

l 

IV/O 2. 500.0

-vy 0. -6

1 T/D 2. 500.0

MT -2. 1210al LOAD CELL i

;IGNATURE Vy ITL -2. 1210.1

I

THRUST

:IGNATURE

L - - - - . . . . . .

1- ''

.. _.__ _ ............ _ .. . . .s. _

T
157

Test I.D. Valve #16

Code Comments

1,4 The close-to-open bypass switch required

adjustment to properly cover unseating of

the valve.

1,4 Thrust signatures indicated that this

valve is backseating. This condition was

corrected at the time of the test.

4 After detailed analysis it was found that

the thrust developed was less than the

target thrust values. This condition was corrected during recent re-testing.

4 To acquire the target thrust loads, the

torque switch settings were changed from

2.5 to >1.0 in the open direction and 2.0

to >1.0 in the closed direction.

4 Thrust signatures indicate that this

particular valve develops initial thrusts

of approximately 151%. (See

Recommendation No. 1.)

Recommendations

1. Due to the fact that the total thrust value is well within the design

limitation of the actuator, this condition, in our opinion, does not

jeopardize valve operability at this time. No further corrective

action is necessary at this time.
158

TEST ID: VALVE 16

SYSTEM

SYSTEM : N/A

FLOW : 0

TEMP : ABIENT

PRESS : ATMOSPHERIC

SFTY REL'D: N/A

OPERATOR

TYPE : SMB

SIZE : 0

SERIAL NO. : 9508SA

ORDER NO. : 336542L

ORIENTATION: VERTICAL

ELECTRICAL VALVE

CONTROL CIR VOLTS:

A'/DC

OPEN CONTROL ,

CLOSE CONTROL

MCC

SW. SENSING CIR. :

120

AC

LIMIT

TORQUE

N/A

VOLTAGE

ID. NO.

TYPE

SIZE

BODY ORIENTATION:

INITIAL POSITION:

FINAL POSITION :

COV-10

GATE

12

HORI ZONTAL

N/A

N/A

TORQUE SWITCH MOTOR

OPEN T.S. SETTING : 2.5/>1.0

CLOSE T.S. SETTING: 2.0/>1.0

LIMITER PLATE : 2.5

TS BALANCEABLE : YES

VOLTS : 460 AC

RATED AMPS: 4.6

SPEED : 1700

HORSEPOWER: 7.5

TEST EQUIPMENT

LOAD CELL

AMP PROBE

MANFRAME

TMD #

# N/A--N/A

: FLUKE(20) N/A

# : N/A

: N/A
159

TEST ID: VALVE #16 BY. RLB DATE: 06-17-85

THRUST SIGNATURE ANALYSIS

TS-OC-03-03

STROKE TIME : 62.8 SECONDS

BYPASS TIME : 0.24 SECONDS

THRUST AT CST : 2236 N

SEAT THRUST AT CST: 1224 #

AVE RUN THRUST :1011 #

MAX RUN THRUST : 1224 #

INERThoL THRUST : 340 X

TOTAL THRUST : 9851 N

TORQUE SW. SETTING: 2.0/>1.O

TS-CO-03-04

STROKE TIME

BYPASS TIME

PROTECTION MARGIN :

UNSEATING TIME a

AVE RUN THRUST :

MAX RUN THRUST a

ULSEATING THRUST :

THRUST AT CST

TORQUE SW. SETTINGs

62.66 SECONDS

4.9 SECONDS

3.64 SECONDS

1.26 SECONDS

1970 #

2023 #

2715 N

N/A

2.5/)1.0

SPRING PACK CALIBRATION SIGNATURE ANALYSIS

TL-CAL-03-02 K-FACTOR: 10650 #/V PRELOAD: C RUNNING LO

MOTOR CURRENT SIGNATURE ANALYSIS

CS-OC-03-05

STROKE TIME . 62.86

PEAK INRUSH 5 6.77

AVE. RUN CURRENT s 2.37

MAX. RUN CURRENT a 2.37

SEATING CURRENT : 2.37

SECONDS

AMPERES

AMPERES

AMPERES

AMPERES

CS-CO-03-06

STROKE TIME

PEAK INRUSH

AVE. RUN CURRENT

MAX. RUN CURRENT

END CURRENT

: 62.74 SECONDS

a 6.32 AMPERES

: 2.08 AMPERES

: 2.08 AMPERES

* 2.08 AMPERES
TEST IDENTIF!CATION: VALVE #16

STORAGE LOCATION : 03-03

PLOT NO. I

TMD & SWITCHES: OPEN TO CLOSE

STROKE TIME

BYPASS TIME

: 62.8 SECONDS

: 0.24 SECONDS

AVE RUN THRUST : 1011 #

MAX RUN THRUST : 1224 #

THRUST AT CST : 2236 #

SEAT THRUST AT CST: 1224 #

INERTIAL THRUST : 340 X

TORQUE SW. SETTING:2.0/>1.0 TOTAL THRUST : 9851 #

|V/D 1.000Q0

Vy 0 -7

|T/O 1. 000.1

ITL -8. 326Q1 -1 0' 0%

...... ...... ...... l---E .... . . .... .....

.11 -11 L

V/O 2. 500a0

Vy 0. e-6

T/D 1. 000.1

TL -8. 328el

JITCH

EGNATURE

Vy

IRUST

IGNATURE ....~~~ ~~~- -

TLTL.Vx Vx
TEST IDENTIFICATION: VALVE 16

STORAGE LOCATION : 03-04

PLOT NO. 2

TMD & SWITCHES: CLOSE TO OPEN

STROKE TIME

BYPASS TIME

UNSEATING TIME

PROTECTION MARGIN

: 62.66 SECONDS

: 4.9 SECONDS

: 1.26 SECONDS

: 3.64 SECONDS

AVE RUN THRUST I

MAX RUN THRUST

UNSEATING THRUST : THRUST AT CST

TORQUE SW. SETTING:

1970 #

2023 #

2715 #

N/A

2.5/> 1.0

V/D 1. 0OOe0

Vy 0.o-7

T/D 1.000el

TL -8. 274el

I

I-4

I ' 'iff, . '.If," 'I *'UI' 'If , '"TP "I' --

fITCH

lGNATURE

V/D 2.500eO

Vy 0. e-6

T/D 1.000el

TL -8. 276e1

Vy -

IRUST

(GNATURE

-.-. i

TL 

Vx

TL Vx
TEST IDENTIFICATION; VALVE 16

ST2RAGE LOCATION : 03-05

PLOT NO. 3

MOTOR CURRENT SWITCHES: OPEN TO CLOSE

STROKE TIME : 62.S6 SECONDS PEAK INRUSH

AVE. RUN CURRENT

MAX. RUN CURRENT

SEATING CURRENT

i 6.77 AMPERES

: 2.37 AMPERES

: 2.37 AMPERES

: 2.37 AMPERES

'--- "--- - - - r-- - -t - - - - ---- - -

L

k

1

-I

,V!D 1. 000

1Vy 0.0-7 -1

1T/D 1.OOOul

jTL -9.27401

!V/D 2.500-1 I-0%

'h "1' 'j. *I -N- -

WITCH

IGNATURE

-

"I- H l-f -lpi'Vy 0. 9-7

'7/0 1. 000a1

!TL -. 27B.1

Vy 1-

L

II

I

II

i

a

H

I I

I i JRRENT

IGNATURE

i- . . . -J.. I. -h

TL

-. .-s . * - . I . .

'. x
TEST IDENTIFICATIO4: VALVE 16

STORAGE LOCATION : 03-06

PLOT NO. 4

MOTOR CURRENT SWITCHES: CLOSE TO OPEN

STROKE TIME : 62.74 SECONDS PEAK INRUSH

AVE. RUN CURRENT

MAX. RUN CURRENT

END CURRENT

: 6.32 , 2.08

: 2.08

: 2.08

AMPERES

AMPERES

AMPERES

AMPERES

t F~F 6 

4ITCH J

EGNATURE i

Vy k

.~ - -

IV/D 1.00000

Wy 0. -7

-1jT/D 1.000l

ITL -8. 274a1 Ip _

0% ..~~~~- . ... .. .... --------......... .... .... -... F, '1h- 11n

V/D 2. 500a-l

Vy 0. -7

|*D 1. 0001

TL -. 278a1

i

L

i I

JRRm NT I 

lGNATURE 

L. . . - - .

TIL

1 - - -i

I ~~~~~~~~~~~~~~~~~

I4 I

._._._. . ._. ._. ._ -

-i I

. ... - ... - ... --L- . . .. . . . 
TEST IDENTIFICATION: VALVE #16

STORAGE LOCATION : 03-02

PLOT NO. 5

TMD LOAD CELL

PRELOAD: C RUNNING LOAD

K-FACTOR: 10650 /V

_ , ____

I-

)AD CELL Vy k

GNATURE i

V/0 1. 00000

Vy .a-7

T/D 5. 000.O

TL -4. 138.1

V/D 2. 500.0

jVy .Q-

! T/D 5. 000O

1TL -4. 137.1

0o

I

I

- I13- -'- - - -1- 

m

MGATURE 1

Lo - - . . .. - .. . - *__ . _ _ L - _ . _ ........ - J.. J.

TL
165

Test I.D. Valve 17

Code Comments

1,4 The close-to-open bypass switch required

adjustment to properly cover the unseating

of the valve.

3 During testing the motor went "locked

rotor' going open against the load cell at

the as found torque switch setting of

>3.0. This valve was tested three times

at this setting and the locked rotor

condition occurred only on the third run.

Since the valve only needs approximately

6000 pounds to close, consideration should

be given to installing a blocking device

at a torque switch setting of 2.5 to

prevent the motor from going "locked

rotor" during normal operation.

4 The torque switch was found to be out of

balance by a factor of 1.29 to 1.0. This

condition was corrected at the time of

testing.

4 During equipment installation, it was

noted that the spring cartridge cap was

full of grease (See Recommendation No. 1.)

4 The open torque switch setting was changed

from >3.0 to 1.5 and the closed torque

switch setting was changed from 2.5 to 1.5

to attain the target thrust loads.

4 This valve exhibits relatively high

running loads in both directions, most

likely due to high packing drag.

Recommendations

1. It should be noted that the Belleville springs do not require

lubrication to function properly.
166

TEST ID: VALVE #17

SYSTEM

SYSTEM : N/A

FLOW : 

TEMP : AMBIENT

PRESS : ATMOSPHERIC

SFTY REL'D: NO

OPERATOR

TYPE : SMB

SIZE : I

SERIAL NO. : 95294A

ORDER NO. : 3365420

ORIENTATION: HORIZONTAL

ELECTRICAL VALVE

CONTROL CIR VOLTS:

AC/DC I

OPEN CONTROL

CLOSE CONTROL

MCC

SW. SENSING CIR. :

120

AC

LIMIT

TORQUE

N/A

VOLTAGE

ID. NO.

TYPE

SIZE

BODY ORIENTATION:

INITIAL POSITION:

FINAL POSITION :

EX-V-5B

GATE

18

HORIZONTAL

N/A

N/A

TORQUE SWITCH MOTOR

OPEN T.S. SETTING :

CLOSE T.S. SETTING:

LIMITER PLATE I

TS BALANCEABLE

>3.0/1.5

2.5/1.5

4.0

YES

VOLTS : 460 AC

RATED AMPS: 2.8

SPEED : 1700

HORSEPOWER: N/A

LOAD CELL

AMP PROBE

MAINFRAME

TMD #

TEST EQUIPMENT

# : 50 K--N/A

# : FLUKE(20) N/A

# : N/A

: N/A
167

TEST ID: VALVE #17 BY: RLB DATE: 06-17-85

THRUST SIGNATURE ANALYSIS

STROKE TIME

BYPASS TIME

THRUST AT CST

SEAT THRUST AT C'

AVE RUN THRUST

MAX RUN THRUST

INERTIAL THRUST

TOTAL THRUST

TORQUE SW. SETTIt

TS-OC-03-18

: 88.5 SECONDS

* 0.25 SECONDS

: 8991 #

ST: 4909 #

': 4081 #

: 4164 #

: 51 '

: 13652 #

4G: 2.5/1.5

TS-CO-03-19

STROKE TIME : 88.2 SECONDS

BYPASS TIME : 9.55 SECONDS

PROTECTION MARGIN * 7.65 SECONDS

UNSEATING TIME : 1.9 SECONDS

AVE RUN THRUST : 3226 #

MAX RUN THRUST : 3419 #

UNSEATING THRUST : 7170 #

THRUST AT CST a N/A

TORQUE SW. SETTING: )3.0/1.5

SPRING PACK CALIBRATION SIGNATURE ANALYSIS

TL-CAL-03-17 K-FACTOR: 5516 #/V PRELOAD: C RUNNING LOA

MOTOR CURRENT SIGNATURE ANALYSIS

CS-OC-03-20

STROKE TIME a 88.55

PEAK INRUSH : 7.76

AVE. RUN CURRENT : 2.66

MAX. RUN CURRENT : 2.68

SEATING CURRENT : 2.82

SECONDS

AMPERES

AMPERES

AMPERES

AMPERES

CS-CO-04-01

STROKE TIME

PEAK INRUSH

AVE. RUN CURRENT

MAX. RUN CURRENT

END CURRENT

* 88.25

a 9.18

:2.38

:2.41

: 2.41

SECONDS

AMPERES

AMPERES

AMPERES

AMPERES
TEST IDENTIFICATION: VALVE #17

STORAGE LOCATION : 03-18

PLOT NO. I

TMD SWITCHES: OPEN TO CLOSE

STROKE TIME

BYPASS TIME

: 88.5 SECONDS

: 0.25 SECONDS

AVE RUN THRUST

MAX RUN THRUST

THRUST AT CST

SEAT THRUST AT CST:

INERTIAL THRUST :

TOTAL THRUST

4081 #

4164 #

8991 #

4909 #

51 %

TORQUE SW. SETTING:2.5/1.5 13652 #

JV/D 1.000.0

Vy 0. Q-7

T/D 1. 250el

TL -1.3010e2 a' I V/D 2. 50000

WITCH

IGNATURE

2

V/D 2.500eO

Vy 0. 6-6

T/D 1.250a

TL -1.3015e2

Vy 

HRUST

IGNIATURE

I~~~~~~~~ 

_-

_ _. _ _

TL 

Vx

TL Vx
TEST IDENTIFICATION: VALVE 17

STORAGE LOCATION : 03-19

PLOT NO. 2

STROKE TIME

BYPASS TIME

UNSEATING TIME

PROTECTION MARGIN

TMD & SWITCHES: CLOSE TO OPEN

: 88.2

: 9.55

: 1.9

: 7.65

SECONDS

SECONDS

SECONDS

SECONDS

AVE RUN THRUST : 3226 #

MAX RUN THRUST : 3419 #

UNSEATING THRUST : 7170 #

THRUST AT CST : N/A

TORQUE SW. SETTING: >3.0/1.5

1-

T . .

tr~ ~~~~~~~ I

V/D .OOOeo

Vy 0. e-7

T/D 1.250el

TL -1.2775e2 I-

'00%

dITCH

tGNATURE

V/D 2.500eO

Vy 0. 0-6

T/D 1.250o1

TL -1.2780e2

Vy

-.-

BRUST

IGNATURE

1 1 .7

TL Vx
TEST IDENTIFICATION: VALVE #17

STORAGE LOCATION : 03-20

PLOT NO. 3

STROKE TIME

MOTOR CURRENT SWITCHES: OPEN TO CLOSE

: 88.55 SECONDS PEAK INRUSH

AVE. RUN CURRENT

MAX. RUN CURRENT

SEATING CURRENT

: 7.76 AMPERES

: 2.66 AMPERES

: 2.68 AMPERES

: 2.82 AMPERES

V/D 1. 000X0

Vy 0. a-7

T/0 1. 250a1

TL -1.3435e2

WITCH

IGNATURE

Vy

- I

-__.

-.0

V/D 2.500Q-1

Vy 0. e-7

T/D 1.250a 1

TL -1. 344092 .4.

URRENT

IGNATURE

TL
TEST IDENTIFICATION: VALVE #17

STORAGE LOCATION : 04-01

PLOT NO. 4

MOTOR CURRENT SWITCHES: CLOSE TO OPEN

STROKE TIME : 8.25 SECONDS PEAK INRUSH

AVE. RUN CURRENT

MAX. RUN CURRENT

END CURRENT

: 8.18 AMPERES

: 2.38 AMPERES

X 2.41 AMPERES

: 2.41 AMPERES

I IV/D 1.0000

Vy 0. a-7

T/D 1. 250al

TL -1.2950s2 I

JiTCH

CGNATURE

- j<L1

I.

-t

V/D 2.500e-l

Vy 0. -7

T/D 1. 250.1

TL -1.2955e2

pVy l4

_ ..

l4

JRRENT

:GNATURE

TL 

Vx

TL Vx
TEST IDENT ICATION4: VALVE #i7

STORAGE LOCATION : 03-17

PLOT NO. 5

TMD & LOAD CELL

PRELOAD: RUNNING LOAD K-FACTOR: 5514 /V

-J

OAD CELL

IGNATURE VY

RNATURE

TL
173

Test I.D. Valve 18

Code Comments

1,4 The close-to-open bypass switch required adjustment to properly cover the

unseating of the valve.

4 The torque switch was found to be out of

balance by a factor of 1.35-to 1.0. This

condition was corrected at the time of

testing.

4 During equipment installation, it was noted that the spring pack cartridge cap was full of grease. (See Recommendation

No. 1.)

4 This particular valve exhibits

approximately 1491 inertia. (See

Recommendation No. 2.)

4 The torque switch settings were changed

from 2.5 to 1.75 in the open direction

and 2.0 to 1.75 in the close direction to

attain target thrust loads.

Recommendations

1. It should be noted that the Belleville springs do not require lubrication to function properly.

2. Due to the fact that the total thrust value is well within the design limitation of the actuator, this condition does not in our opinion jeopardize the operability of the valve at this time.
174

TEST ID: VALVE #18

SYSTEM

SYSTEM : N/A

FLOW : 

TEMP : AMBIENT

PRESS : ATMOSPHERIC

SFTY REL'D: NA

OPERATOR

TYPE : SmB

SIZE I

SERIAL NO. : 95293A

ORDER NO. : 336542D

ORIENTATION: VERTICAL

ELECTRICAL VALVE

CONTROL CIR VOLTS:

AC/[C

OPEN CONTROL I

CLOSE CONTROL

MCC

SW. SENSING CIR. :

120

AC

LIMIT

TORQUE

N/A

VOLTAGE

ID. NO.

TYPE

SIZE

BODY ORIENTATION:

INITIAL POSITION:

FINAL POSITION :

EXV-5A

GATE

18"

HORIZONTAL

N/A

NWA

TORQUE SWITCH MOTOR

OPEN T.S. SETTING 

CLOSE T.S. SETTING:

LIMITER PLATE :

TS BALANCEABLE

2.5/1.75

2.0/1.75

4.5

YES

VOLTS :

RATED AMPS:

SPEED

HORSEPOWER:

460 AC

2.8

120

N/A

LOAD CELL

AMP PROBE

MAINFRAME

TMD 

TEST EQUIPMENT

: 200K--N/A

# : FLUKE(20) N/A

* : N/A

: N/A
175

TEST IDi VALVE #18

4.

BY: RLB DATE: 06-16-84

THRUST SIGNATURE ANALYSIS

STROKE TIME

BYPASS TIME

THRUST AT CST

SEAT THRUST AT CS

AVE RUN THRUST

MAX RUN THRUST

INERTIAL THRUST

TOTAL THRUST

TORQUE SW. SETTIh

TS-OC-1-14

: 8.35 SECONDS

:0.4 SECONDS

i3969 *#

T: 3687 N

:225 #

i281 #

, 176 X

10978 N

36: 2.0/1.75

TS-CO-I-15

STROKE TIME

BYPASS TIME

PROTECTION MARGIN :

UNSEATING TIME :

AVE RUN THRUST

MAX RUN THRUST

UNSEATING THRUST :

THRUST AT CST

TORQUE SW. SETTING:

88 SECONDS

6.15 SECONDS

3.7 SECONDS

2.45 SECONDS

140 #

1365 #

2026 #

N/A

2.5/1.75

SPRING PACK CALIBRATION SIGNATURE ANALYSIS

TL-CAL-1-13 K-FACTOR: 5630 /V PRELOAD: C RUNNING LOAD

MOTOR CURRENT SIGNATURE ANALYSIS

CS-OC-1-I6

STROKE TIME

PEAK INRUSH

AVE. RUN CURRENT

MAX. RUN CURRENT

SEATING CURRENT

* 88.45

a 8.07

: 2.46

i 2.51

a 2.63

SECONDS

AMPERES

AMPERES

AMPERES

AMPERES

CS-CO- I-17

STROKE TIME

PEAK INRUSH

AVE. RUN CURRENT

MAX. RUN CURRENT

END CURRENT

: 88.05 SECONDS

X 7.18 AMPERES

* 2.29 AMPERES

* 2.32 AMPERES

: 2.3 AMPERES
TEST IDENTIFICAT!ON: VALVE #18

STORAGE LOCATION : 1-14

PLOT NO. I

TMD SWITCHES: OPEN TO CLOSE

STROKE TIME : 88.35 SECONDS AVE RUN THRUST : 225 #

MAX RUN THRUST : 281 #

BYPASS TIME : 0.4 SECONDS THRUST AT CST : 3969 #

SEAT THRUST AT CST: 3687 #

INERTIAL THRUST : 176 

TORQUE SW. SETTING:2.0/1.75 TOTAL THRUST : 10978 #

V/D 1.00090

_ _ ~~~~~~~~~~~~~~~~~~T/D 1.250al

_TL -1.4300e2

V/D 2.50090

WITCH Vy .- 6

IGNATURE _

T/D 1. 250 1

TL -1. 4295a2

HUST 1

,IGNATURE

TL Vx
TEST DENTIFICATION: VALVE #18

STORAGE LOCATION i 1-15

PLOT NO. 2 TMD SWITCHES: CLOSE TO OPEN

STROKE TIME

BYPASS TIME

UNSEATING TIME

PROTECTION MARGIN

: 88 SECONDS

: 6.15 SECONDS

: 2.45 SECONDS

: 3.7 SECONDS

AVE RUN THRUST

MAX R THRUST

UNSEATING THRUST : THRUST AT CST I

TORQUE SW. SETTING:

140 #

1365 #

2026 #

N/A

2.5/1.75

J~~~~

IV/O 1.000O0

_Vy O.o-7

T/D 2. 500 1

TL -2.1180.2 0-

-J

WITCH

IGNATURE

Vy

-

V/D 2.5000

_Vy 0.9-6

T/O 2. 500 1

TL -2.1185e2

HRUST _ . . . .. ,. I

IGNATURE

TL
TEST IDENTIFICATION: VALVE 18

STORAGE LOCATION : 1-16

PLOT NO. 3

MOTOR CURRENT & SWITCHES: OPEN TO CLOSE

STROKE TIME : 88.45 SECONDS PEAK INRUSH

AVE. RUN CURRENT

MAX. RUN CURRENT

SEATING CURRENT

* 8.07 AMPERES

: 2.46 AMPERES

: 2.51 MPERES

: 2.63 AMPERES

WITCH-

;IGNATURE

Vy I-

-~~~~~~~~~~

. -_I_ ._ g

V/D 2.500Q-1

Vy 0. a-7

T/D 2. 500 1

TL -2.1345e2

1

jV/D 1. 000.0

jVy 0. -7

T/D 2. 500 1

TL -2. 1340.2

I--

00

URRENT

IGNATURE  ._.__._._._.

-5----. * £

TL 

Vn

TL Vx
-- - . I -

TEST DENTIFICATION: VALVE 18

STORAGE LOCATION : 1-17

PLOT NO. 4

MOTOR CURRENT & SWITCHES: CLOSE TO OPEN

STROKE TIME : 8.05 SECONDS PEAK INRUSH

AVE. RUN CURRENT

MAX. RUN CURRENT

END CURRENT

: 7.18

: 2.29

: 2.32

: 2.3

AMPERES

AMPERES

AMPERES

AMPERES

fITCH

EGNATURE

V/D 1.000a0

r ~~~~~~~~~Vy 0. e-7

T/D 2.500al

TL -2.1340e2

V/D 2.500a-1

Vy 0. 5-7

T/O 2.500al

TL -2.1345X2

l~~~~~ ., t _

'-

D4

Vy F

JRRENT

EGNATURE

TL 

Vx

TL Vx
TEST ; CIEr4T c!4CTI': I ALt'E #18

STCPR4E LOCAT! ON : 1- 1

PLOT NO. 5

TMD LOAD CELL

PRELOAD: RUNNING LOAD

K-FACTORt 5630 /V ao

V/D 5.OOO-1

Vy 0. e-7

T/O 5. 000O0

TL -4. 258a1

V/D 2. 500aO

Vy 0. e-6

T/D 5. 000.0

TL -4. F55el

-- j~~~~~~~~~- 

I-0

Vv

.OAD CELL

SIGNATURE

MD

3IGNATURE

I

TL Vx
181

Test I.D. Valve #19

Code Comments

4 The close-to-open bypass switch required

adjustment to properly cover the

unseating of the valve.

4 The torque switch was found to be out of

balance by a factor of 2.3 to 1.0. (See

Recommendation #1).

4 This valve exhibits approximately 230%

inertia. (See Recommendation 2).

4 The open torque switch setting was changed from 2.5 to 1.5 and the closed

torque switch setting was changed from

2.0 to 1.0 to attain the correct target

thrust loads.

4 During equipment installation, it was

noted that the spring cartridge cap was

full of grease. (See Recommendation

#3).

Recommendations

1. The torque switch was adjusted to attain as close to a balanced

condition as possible (1.6 to 1.0). This data should be considered if

it becomes necessary to change torque switch settings in the future

without the use of the MOVATS Series 2000 System.

2. Due to the fact that the total thrust value is well within the design

limitations of the actuator, this condition does not, in our opinion.

jeopardize the operability of the valve at this time.

3. It should be noted that the Belleville springs do not require

lubrication to function properly.
182

TEST ID: VALVE 19

SYSTEM

SYSTEM

FLOW

TEMP

PRESS I

SFTY REL'D:

0

AMBIENT

ATMOSPHERIC

OPERATOR

TYPE : SMB

SIZE : 

SERIAL NO. : 95086A

ORDER NO. : 336542C

ORIENTATION: VERTICAL

ELECTRICAL VALVE

CONTROL CIR VOLTS: 120

AC/DC . AC

OPEN CONTROL : LIMIT

CLOSE CONTROL : TORQUE

MCC

SW. SENSING CIR. : VOLTAGE

ID. NO.

TYPE

SIZE

BODY ORIENTATION:

INITIAL POSITION:

FINAL POSITION :

COV- OB

GATE

12"

HORIZONTAL

TORQUE SWITCH MOTOR

OPEN T.S. SETTING :

CLOSE T.S. SETTING:

LIMITER PLATE

TS BLANCEABLE

1.0/1.0

1.5/1 .5

2.5

YES

VOLTS a 460 AC

RATED AMPSs 4.6

SPEED : 1700

HORSEPOWERu 7.5

TEST EQUIPMENT

LOAD CELL # . 50 K--

AMP PROBE : FLUKE(20)

MAINFRAME # :

TMD # I
183

TEST ID: VALVE 19 BY: RLB DATE: 06-16-85

THRUST SIGNATURE ANALYSIS

TS-OC-03-08

STROKE TIME : 63.9 SECONDS

BYPASS TIME : 0.28 SECONDS

THRUST AT CST a 3610 N

SEAT THRUST AT CST: 3554 N

AVE RUN THRUST :<PRELOAD

MAX RUN THRUST :CPRELOAD

INERTIAL THRUST : 224 X

TOTAL THRUST : 9671 N

TORQUE SW. SETTING: 1.5/1.5

TS-CO-03-09

STROKE TIME : 63.78 SECONDS

BYPASS TIME a 3.96 SECONDS

PROTECTION MARGIN : 3.2 SECONDS

UNSEATING TIME : 0.78 SECONDS

AVE RUN THRUST :(PRELOAD

MAX RUN THRUST :CPRELOAD

UNSEATING THRUST : 6570 N

THRUST AT CST a N/A

TORQUE SW. SETTING: 1.0/1.0

SPRING PACK CALIBRATION SIGNATURE ANALYSIS

TL-CAL-03-07 K-FACTOR: 5638 N/V PRELOAD: 1440 #

MOTOR CURRENT SIGNATURE ANALYSIS

CS-OC-03-10

STROKE TIME : 63.84

PEAK INRUSH a 7.15

AVE. RUN CURRENT a 2.28

MAX. RUN CURRENT a 2.28

SEATING CURRENT a 2.35

SECONDS

AMPERES

AMPERES

AMPERES

AMPERES

CS-CO-03-11

STROKE TIME

PEAK INRUSH

AVE. RUN CURRENT

MAX. RUN CURRENT

END CURRENT

: 63.8 SECONDS

i 6.29 AMPERES

: 2.19 AMPERES

: 2.19 AMPERES

i 2.19 AMPERES
TEST IDENTlFICATIt4: VALVE #19

STOR45E LOC"TION 03-08

PLOT NO. I

TMD & SWITCHES: OPEN TO CLOSE

STROKE

BYPASS

TIME

TIME

: 63.9 SECONDS

: 0.28 SECONDS

AVE RUN THRUST :<PRELOAD

MAX RUN THRUST :<PRELOAD

THRUST AT CST : 3610 #

SEAT THRUST AT CST: 3554 #

INERTIAL THRUST : 224 X

TORQUE SW. SETTING:1.5/1.5 TOTAL THRUST : 9671 #

SWITCH

SIGNATURE

V/D 1. 000.O

_Vy 0. e-7

T/D 1. 000.1

'4Mw ss -lln- -.- ,Zw- 5.-- -, .,,,,,,. TL -8.344a1 § 

V/D 2. 50090

Vy . -6

T/D .000.1

TL -8. 346a1

Vy jTHRUST

SIGNATURE

TL 

Vx

TL Vx
-EST IDENTIFICATION: VALVE #19

STORAGE LOCATION : 03-09

PLOT NO. 2

TMD & SWITCHES: CLOSE TO OPEN

STROKE TIME

BYPASS TIME

UNSEATING TIME

PROTECTION MARGIN

: 63.78 SECONDS

: 3.98 SECONDS

: 0.78 SECONDS

: 3.2 SECONDS

AVE RUN THRUST :

MAX RUN THRUST

UNSEATING THRUST :

THRUST AT CST

TORQUE SW. SETTINGS

CPRELOAD

<PRELOAD

6570 #

N/A

1.0/1 .0

11111

V/D .0000

Vy 0. -7

T/D 1. 000e1

TL -. 344QI ........ "TITTTT"llwl"""""h" i-- I LJI

SWITCH

SIGNATURE

.. ,,

V/D 2. 500O

Vy 0. e-6

T/O 1. 000Q1

TL -8. 346.1

Vy .

THRUST --.-f~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

SIGNATURE

,

TL 

Vx

TL Vx
TEST IDENTIFICATION: VALVE #19

STORAGE LOCATION : 03-10

PLOT NO. 3

MOTOR CURRENT & SWITCHES: OPEN TO CLOSE

STROKE TIME : 63.84 SECONDS PEAK INRUSH

AVE. RUN CURRENT

MAX. RUN CURRENT

SEATING CURRENT

: 7.15 AMPERES

: 2.28 AMPERES

: 2.28 AMPERES

: 2.35 AMPERES

, ~ ~~~ -------- r- I I -

V/D 1. ODO O

Vy . -7

T/D 1. OD0l

.55 , - . 1 Up rS ir- S r1 .. r S ir .II .r -. * 1 TL -8. 344el

SWITCH

SIGNATURE

V/D 2.500e-1

Vy 0. -7

T/D 1. 00O0 1

TL -8. 346a1

Vy

OTOR CURRENT

SIGNATURE

r

L L-.- _._ ._

TL 

Vx

TL Vx
TEST IDENTIFICATION: VALVE 19

STORAGE LOCATION : 03-11

PLOT NO. 4

MOTOR CURRENT SWITCHES: CLOSE TO OPEN

STROKE TIME : 63.8 SECONDS PEAK INRUSH : 6.29

AVE. RUN CURRENT : 2.19

MAX. RUN CURRENT : 2.19

END CURRENT : 2.19

AMPERES

AMPERES

AMPERES

AMPERES

¶ ;V/D .00090

jVy 0.9-7

T/D 1. 000I

,,- TL -8.344.l n

....- .... .. . ., _. ....... _ .. _.qT fi TM.. -Ml - I -

SWITCH

SIGNATURE

I.1 V/D 2.500e-I

Vy 0.9-7

T/D 1. 000cl

TL -8. 348al

Vy h

1.

._. DTOR CURRENT

SIGNATURE

L_

.-

TL

TL Vx
TEST IDENTIFICATION: VALVE 19

STORAGE LOCATION : 03-07

PLOT NO. 5

TMD LOAD CELL

PRELOAD: 1440 

K-FACTOR: 5638 #/V

LOAD CELL Vy

SIGNATURE

THRUST

SIGNATURE

V/D 1. OOOo

_ _ ~~~~~~~~~~~~~~~~~~Vy O. -7

T/D 5. OOO0

TL -4. 285e1

V/O 2. 500.0

_Vy . -6

T/D 5. 000aO

TL -4. 284.1

TL- .... .V.J_... 

0-

co

TL Vx
189

TEST ID: VALVE #20 BY: RLB DATE: 06-14-85

THRUST SIGNATURE ANALYSIS

STROKE TIME

BYPASS TIME

THRUST AT CST

SEAT THRUST AT CE

AVE RUN THRUST

MAX RUN THRUST

INERTIAL THRUST

TOTAL THRUST

TORQUE SW. SETTII

TS-OC-05-02

X 53.14 SECONDS

: 0 SECONDS

a 16020 #

'T: 15960 #

: 60 

: 120 8

:7 M

I 17160 

10: 2.0/C2.0

TS-CO-05-03

STROKE TIME I

BYPASS TIME :

PROTECTION MARGIN a

UNSEATING TIME a

AVE RUN THRUST

MAX RUN THRUST

UNSEATING THRUST a

THRUST AT CST

TORQUE SW. SETTING:

52.86 SECONDS

3.08 SECONDS

1.88 SECONDS

1.2 SECONDS

480 

960 #

2640 #

N/A

2.0/<2.0

SPRING PACK CALIBRATION SIGNATURE ANALYSIS

TL-CAL-05-01 K-FACTOR: 12000 /V PRELOAD: C RUNNING LOAD

MOTOR CURRENT SIGNATURE ANALYSIS

CS-OC-05-04

STROKE TIME

PEAK INRUSH

AVE. RUN CURRENT

MAX. RUN CURRENT

SEATING CURRENT

a 53.16

: 11.08

: 1.56

a 1.5

: 3.19

SECONDS

AMPERES

AMPERES

AMPERES

AMPERES

CS-CO-05-05

STROKE TIME

PEAK INRUSH

AVE. RUN CURRENT

MAX. RUN CURRENT

END CURRENT

: 52.88

: 11.31

a 1.41

: 1.41

: 1.41

SECONDS

AMPERES

AMPERES

AMPERES

AMPERES
190

Test I. D. Valve 20

Code Comments

1,4 The close-to-open bypass switch required

adjustment to properly cover the

unseating of the valve. This condition was corrected at the time of testing.

1,4 The thrust signatures revealed that the

valve was backseating. This condition

was corrected at the time of testing.

3 The close-to-open thrust signature

revealed the possibility for slight

guide wear. (See Recommendation #1).

4 The open torque switch setting was

changed from 2.0 to <2.0 and the closed

torque switch setting was changed from

2.0 to >1.5 to attain the target thrust

values.

Recommendations

1. This condition does not, in our opinion, jeopardize the operability of

the valve at this time, but should be monitored during the next

testing period.
191

TEST IDt VALVE 20

SYSTEM

SYSTEM : NA

FLOW :0 

TEMP : AMBIENT

PRESS : ATMOSPHERIC

SFTY REL'D: N/A

OPERATOR

TYPE : SMB

SIZE : 0

SERIAL NO. a 144289

ORDER NO. : 359329A

ORIENTATION: VERTICAL

ELECTRICAL VALVE

CONTROL CIR VOLTS:

AC/DC

OPEN CONTROL X

CLOSE CONTROL I

MCC I

SW. SENSING CIR. :

120

AC

LIMIT

TORQUE

N/A

VOLTAGE

ID. NO. I

TYPE I

SIZE

BODY ORIENTATION:

INITIAL POSITION:

FINAL POSITION :

DHV-3

GATE

12

HORIZONTAL

N/A

NA/

TORQUE SWITCH MOTOR

OPEN T.S. SETTING 

CLOSE T.S. SETTING:

LIMITER PLATE I

TS BALANCEABLE I

2.0/C2.0

2.0/<2.0

3.0

YES

VOLTS : 0 AC

RATED AMPS: 460

SPEED : 1700

HORSEPOWER: N/A

LOAD CELL

AMP PROBE

MAINFRAME

TMD 

TEST EQUIPMENT

# : 50K--N/A

$ : FLUKE(20) NA

# a N/A

: N/A
TEST IDENTIFICATION: VALVE 20

STORAGE LOCATION : 05-02

PLOT NO. I

TMD SWITCHES: OPEN TO CLOSE

STROKE TIME

BYPASS TIME

: 53.14 SECONDS

: 0 SECONDS

AVE RUN THRUST : 60 #

MAX RUN THRUST : 120 4

THRUST AT CST : 16020

SEAT THRUST AT CST: 15960

INERTIAL THRUST : 7 %

TOTAL THRUST : 17160

49

TORQUE SW. SETTING:2.0/(2.0

_ V/D l.000a

Vy 0. e-7

T/D 1. 0001

TL -8. 474QI _ S

'0%O

- ---- --- ---- ---.... .. .. --- ,- ----

V/D 2.500.0

Vy 0. u-6

T/D 1. 000.1

TL -8. 472.1

Vy F -4

TL Vx
TEST IDENTIFICATION: VALVE #20

STORAGE LOCATION : 05-03

PLOT NO. 2

TMD SWITCHES: CLOSE TO OPEN

STROKE TIME

BYPASS TIME

UNSEATING TIME

PROTECTION MARGIN

: 52.86 SECONDS

: 3.08 SECONDS

: 1.2 SECONDS

: 1.88 SECONDS

AVE RUN THRUST I

MAX RUN THRUST

UNSEATING THRUST : THRUST AT CST : TORQUE SW. SETTING:

480 #

960 #

2640 

N/A

2.0/C2.0

V/C 1.00000

Vy 0. e-7

11jri T/I 1. 000.1

TL -8.474nl

V/D 2.500.0

Vy 0.e-5

TIC 1. 000.1

TL -8. 472el

A . . .. . ..... . .- . . . .. I~~~~~~~~-

I~~~~~~~~~~~~~~~~~~~~~.

%0

to

Vy _

T L V x.- 

TL Vx
TEST IDENTIFICATION: VALVE #20

STORAGE LOCATION : 05-04

PLOT NO. 3

MOTOR CURRENT SWITCHES: OPEN TO CLOSE

STROKE TIME : 53.16 SECONDS PEAK INRUSH

AVE. RUN CURRENT

MAX. RUN CURRENT

SEATING CURRENT

: 11.08 AMPERES

I 1.56 AMPERES

5 1.5 AMPERES

s 3.19 AMPERES

I I

I

1

V/D 1.000s0

Vy 0. 9-7

T/0 1. 00091

TL -8. 34681

Ia- Do

4:w.

1121 -1.61l,llll- -111I,

V/D 2.500a-I

Vy 0. e-7

T/0 1. 000.1

TL -8.344a1

vy F -t

.

L.2.- . - -- 4-------- -- ~~-- L~ -- -- --. L . L

TL Vx
TEST IDENTIFICATION: VALVE 20

STORAGE LOCATION : 05-05

PLOT NO. 4

STROKE TIME

MOTOR CURRENT SWITCHES: CLOSE TO OPEN

: 52.88 SECONDS PEAK INRUSH

AVE. RUN CURRENT

MAX. RUN CURRENT

END CURRENT

: 11.31 AMPERES

* 1.41 AMPERES

1 1.41 AMPERES

: 1.41 AMPERES

I V/D 1. 00000

Vy 0. -7

T/0 1. 000a1

TL -. 348a1

C~~~~~~~~~- -- -------i- ---- ------ --w

,.S, .[ , ,l,- w;I.- .....11' - -'111' I1

V/D 2.500a-I

Vy 0. -7

T/D 1. 00001

TL -. 344a1

*50

Vy -

1

14

.I .

.

TL 

Vx

TL Vx
TEST IDENTIFICATION: VALVE 20

STORAGE LOCATION : 05-01

PLOT NO. 5

TMD LOAD CELL

PRELOAD: < RUNNING LOAD

K-FACTOR: 12000 #/V

. I --------

Vy I~

V/D 1.OOOeO

l ~~~~Vy 0. a-7

T/D 2.500a0

l ~~~TL -2.1185al

V/D 2.500a0

_ _ ~~~~~~~~~~~~~~~~~~Vy D. a-6

T/D 2.500OO

TL -2.11Tal

._._. . ._._.~~ . ..

TL Vx
197

TEST ID: VALVE #21

SYSTEM

SYSTEM I

FLOW I

TEMP

PRESS

SFTY REL'D:

N/A

0

AMBIENT

ATMOSPHERIC

N/A

OPERATOR

TYPE : sMB

SIZE : 3

SERIAL NO. : 101465

ORDER NO. : 336584F

ORIENTATION: VERTICAL

ELECTRICAL VALVE

CONTROL CIR VOLTS:

AC/LC 

OPEN CONTROL

CLOSE CONTROL :

MCC

SW. SENSING CIR. :

120

AC

LIMIT

TORQUE

N/A

VOLTAGE

ID. NO. I

TYPE :

SIZE

BODY ORIENTATION:

INITIAL POSITION:

FINAL POSITION 

DHV-2

GATE

12

HORIZONTAL

N/A

N/A

TORQUE SWITCH MOTOR

OPEN T.S. SETTING 2.0/1.0

CLOSE T.S. SETTING: 1.0/1.0

LIMITER PLATE a NONE

TS BALANCEABLE : YES

VOLTS a

RATED AMPS:

SPEED s

HORSEPOWERa

460 AC

9.8

1725

6.56

LOAD CELL

AMP PROBE

MAINFRAME

TMD #

TEST EQUIPMENT

# a 200K--N/A

* X FLUKE(200) N/A

8 a N/A

I N/A
198

Test I. D. Valve #21

Code Comments

1,4 The close-to-open bypass switch required adjustment to properly cover the valve

unseating.

4 There is an apparent gap of

approximately .011" in the spring pack

assembly.

4 The torque switch was found to be out of

balance by a factor of 1.2 to 1.0. This

condition was corrected at the time of

the test.

4 The open torque switch setting was changed from 2.0 to 1.0 to obtain the

target thrust load. The closed torque

switch setting remained at 1.0.

Recommendations

1. No further corrective action necessary at this time.
199

TEST ID: VALVE 21 BY: RLB DATEi 06-14-85

THRUST SIGNATURE ANALYSIS

TS-OC-05-12

STROKE TIME z 50.46 SECONDS

BYPASS TIME X 0 SECONDS

THRUST AT CST 32456 N

SEAT THRUST AT CSTi 32345 N

AVE RUN THRUST :(PRELOAD

MAX RUN THRUST :CPRELOAD

INERTIAL THRUST a 309 %

TOTAL THRUST 54573 N

TORQUE SW. SETTING: 1.0/1.0

TS-CO-05-13

STROKE TIME z 49.6 SECONDS

BYPASS TIME a 6.16 SECONDS

PROTECTION MARGIN a 3.72 SECONDS

UNSEATING TIME s 2.44 SECONDS

AVE RUN THRUST :CPRELOAD

MAX RUN THRUST :CPRELOAD

UNSEATING THRUST a 39754 N

THRUST AT CST a N/A

TORQUE SW. SETTINGt 2.0/1.0

SPRING PACK CALIBRATION SIGNATURE ANALYSIS

TL-CAL-05-11 K-FACTOR. 22117 N/V PRELOADi 25600 N

MOTOR CURRENT SIGNATURE ANALYSIS

CS-OC-0S-14

STROKE TIME a 50.56

PEAK INRUSH a 51.7

AVE. RUN CURRENT * 5.46

MAX. RUN CURRENT a 5.46

SEATING CURRENT a 7.44

SECONDS

AMPERES

AMPERES

AMPERES

AMPERES

CS-CO-05-15

STROKE TIME

PEAK INRUSH

AVE. RUN CURRENT

MAX. RUN CURRENT

END CURRENT

a 49.68 SECONDS

52.72 AMPERES

a 5.8 AMPERES

a 5.8 AMPERES

a 5.54 AMPERES
TEST IDENTIFICATION: LVE #21

STORAGE LOCATION : 05-12

PLOT NO. I

TMD & SWITCHES: OPEN TO CLOSE

STROKE TIME

BYPASS TIME

* 50.46 SECONDS

0 SECONDS

AVE RUN THRUST :CPRELOAD

MAX RUN THRUST :CPRELOAD

THRUST AT CST : 32456 #

SEAT THRUST AT CST. 32345 #

INERTIAL THRUST : 309 

TORQUE SW. SETTING:1.0X1.0 TOTAL THRUST : 54573 #

JV/D 1.000o0

VY 0. -7

T/D 1. 000.1

TL -4. 16.0 0

0

SWITCH

SIGNATURE

I ''''-".I ,,.... I

V/D 2. 500.0

Vy 0. 2-8

T/D 1. 000.1 ITL 4 4a

vy F L - . 1 .

THRUST

SIGNATURE

1

TL Vx
TEST IDENTIFICATION: VALVE 21

STORAGE LOCATION : 05-13

PLOT NO. 2

TMD SWITCHES: CLOSE TO OPEN

STROKE TIME

BYPASS TIME

UNSEATING TIME

PROTECTION MARGIN

: 49.6 SECONDS

: 6.16

: 2.44

: 3.72

SECONDS

SECONDS

SECONDS

AVE RUN THRUST : CPRELOAD

MAX RUN THRUST : CPRELOAD

UNSEATING THRUST a 39754 #

THRUST AT CST : N/A

TORQUE SW. SETTING: 2.0/1.0

IV/D 1. 000.0 IVy 0. *-7

iT/D 1.00001

TL -4. 6eO

FL -4. 16.0 -q 0

-- m Iwl~~w 

V/D 2. 500.0

Vy 0. e-s

T/0 1. 00001

TL -4. 14.0

SWITCH

SIGNATURE Vy

THRUST

SIGNATURE I.

--

-J. .. . . ._ ._ . . ._ ._ . ._ . I

-. . _J I

TL Vx
TEST IDENTIFICATION: VALVE 21

STORAGE LOCATION : 05-14

PLOT NO. 3

STROKE TIME

MOTOR CURRENT & SWITCHES: OPEN TO CLOSE

: 50.56 SECONDS PEAK INRUSH

AVE. RUN CURRENT

MAX. RUN CURRENT

SEATING CURRENT

: 51.7

: 5.46

: 5.46

: 7.44

AMPERES

AMPERES

AMPERES

AMPERES

I~ ~ ~ I I I I

I V/O 1. OOOQO0

VY 0. Q-7

1 T/D 1.00091

!TL -4. 15.0

I

NJ

C

i ...fl .. I I. p.... ... I -

Y/D 1.000.-1

Vy 0. Q-8

T/D 1. 00091

[TL -4. 14QO

SWITCH

SIGNATURE

vy I- .4.

.4~~~~~~~~~~~~

IOTOR CURRENT

SIGNATURE

.1 __

I 4

! - - ---- *-- - -

rL Vx

- - - a - - a -

1
TEST IDENTIFICATION: VALVE #21

STORAGE LOCATION : 05-15

PLOT NO. 4

STROKE TIME

MOTOR CURRENT SWITCHES: CLOSE TO OPEN

49.68 SECONDS PEAK INRUSH : 52.72 AMPERES

' AVE.-RUN CURRENT : 5.8 AMPERES

MAX. RUN CURRENT : 5.8 AMPERES

END CURRENT : 5.54 AMPERES

-____________________________~~[ - -m 1 nnna-i I w UF .. f -

Vy 0. u-S IT/D 1. OOOQI

!TL -4. 14e

0

i j _ :~ ~ ~ ~~~alil,1 o`

-_n X - fmmvrmmmrmrm- ~~~~~~~~~~~~~~~~~~~

V/D 1. 0000

Vy 0. e-7

T/D 1. 000al

TL -4. 18mO

SWITCH

SIGNATURE

_ ._ ._ ._ ._

Vy -I -

i.

I a __ --

4TOR CURRENT

SIGNATURE L _ , .__ - - - - - - _ - - - !. -

T I ~~~~~~~Vx
TEST IDENTIFICATION: VALVE 21

STORAGE LOCATION 05-11

PLOT NO. 5

TMD B LOAD CELL

PRELOAD: 25600 #

K-FACTOR: 22117 #/V

IV/D 2. 50060

IVy O.0-8

dT/D 5. 00X0 

TL 1.122,1 0

F _ V/D 1.000,0

_j _VY 0.e-7

T/O 5. 00Q0

VY z j T IT'~~~~r 1. 1 20.1 1

LOAD CELL b. SIGNATURE _/ i

THRUST

SIGNATURE

TL 

Vx

TL Vx
205

TEST IDi VALVE #22

SYSTEM

SYSTEM s

FLOW I

TEMP I

PRESS

SFTY REL'D:

N/A

0

AMBIENT

ATMOSPHERIC

N/A

OPERATOR

TYPE 2 SMB

SIZE 00

SERIAL NO. a 101234

ORDER NO. : 337110

ORIENTATION: VERTICAL

ELECTRICAL VALVE

CONTROL CIR VOLTS:

AC/[IC I

OPEN CONTROL I

CLOSE CONTROL a

MCC

SW. SENSING CIR. a

120

AC

LIMIT

TORQUE

N/A

VOLTAGE

ID. NO.

TYPE

SIZE

BODY ORIENTATIONs

INITIAL POSITION:

FINAL POSITION 

RCV-4

GATE

1.5

HORIZONTAL

N/A

N/A

TORQUE SWITCH MOTOR

OPEN T.S. SETTING 

CLOSE T.S. SETTINGs

LIMITER PLATE I

TS BALANCEABLE

1.5/1.5

1.5/1.5

3.0

YES

VOLTS

RATED AMPS:

SPEED I

HORSEPOWERs

460 AC

2.3

1700

0.7

LOAD CELL

AMP PROBE

MAINFRAME

TMD N

TEST EQUIPMENT

: 5K--N/A

N FLUKE(20) N/A

N t N/A

a N/A
206

Test I.D. Valve 22

Code Comments

4 At the time of testing, no closing or

opening thrust values were available.

In our effort to document alternative

torque switch settings, should the

thrust figures become available, the

torque switches were reset to 2.5. Both

thrust values increased and were over

the design maximum of this operator.

However, in this case, this valve has a

rotating stem and because of the

mechanical design, exerted no excessive

force on the operator. The final close

torque switch setting allowed the

operator to develop slightly more than

the 14,000 pound maximum. This was

brought to the attention of management

and provisions were made to lower the

setting slightly, even though this

condition posed no danger to the

operator. (See Recommendation 1).

4 The close-to-open bypass switch required

adjustment to properly cover the valve

unseating.

4 The thrust signatures reveal an apparent

gap of approximately .050" in the spring

pack assembly.

4 In the current signatures there is an

apparent cyclic loading condition at a

frequency of approximately 2.0 seconds.

(See Recommendation #2).

Recommendations

1. Consideration should be given to installing a torque switch limiter

plate at a setting of 1.5 to prevent a torque switch setting that

would not protect the MOV assembly from a mechanical overload

condition.

2. This characteristic is typical of rotating stem type operators and

does not, in our opinion, jeopardize the operability of the valve at

this time. No further corrective action is necessary at this time.
207

TEST ID: VALVE 22 BY: RLB DATE: 06-14-85

THRUST SIGNATURE ANALYSIS

TS-OC-06-02

STROKE TIME X 25.22 SECONDS

BYPASS TIME : 1.61 SECONDS

THRUST AT CST 13079 N

SEAT THRUST AT CSTs 13079 i

AVE RUN THRUST :CPRELOAD

MAX RUN THRUST :ZPRELOAD

INERTIAL THRUST : 14 %

TOTAL THRUST : 14797 #

TORQUE SW. SETTING: 1.5/1.5

TS-CO-06-03

STROKE TIME

BYPASS TIME

PROTECTION MARGIN

UNSEATING TIME

AVE RUN THRUST

MAX RUN THRUST

UNSEATING THRUST

THRUST AT CST

TORQUE SW. SETTING

: 24.86 SECONDS

: 3.13 SECONDS

: 1.42 SECONDS

* 1.71 SECONDS

:CPRELOAD

:<PRELOAD

: 7238 

: N/A

3: 1.5/1.5

SPRING PACK CALIBRATION SIGNATURE ANALYSIS

TL-CAL-06-01 K-FACTOR: 9818 N/V PRELOAD: 3360 

MOTOR CURRENT SIGNATURE ANALYSIS

CS-OC-06-04

STROKE TIME s 25.12

PEAK INRUSH : 5.91

AVE. RUN CURRENT : 1.72

MAX. RUN CURRENT a 1.77

SEATING CURRENT : 1.85

SECONDS

AMPERES

AMPERES

AMPERES

AMPERES

CS-CO-06-05

STROKE TIME

PEAK INRUSH

AVE. RUN CURRENT

MAX. RUN CURRENT

END CURRENT

: 24.84 SECONDS

6 AMPERES

: 1.77 AMPERES

: 1.79 AMPERES

: 1.8 AMPERES
TEST IDENTIFICATION: VALVE #22

STORAGE LOCATION : 06-02

PLOT NO. I

TMD & SWITCHES: OPEN TO CLOSE

STROKE TIME : 25.22 SECONDS AVE RUN THRUST :CPRELOAD

MAX RUN THRUST :<PRELOAD

BYPASS TIME : 1.61 SECONDS THRUST AT CST : 13079 4

SEAT THRUST AT CST: 13079 #

INERTIAL THRUST : 14 X

TORQUE SW. SETTING:1.5/1.5 TOTAL THRUST : 14797 #

V/D 1. 000.0

Vy O..-7 T/D 5.0000 1 Lm nTL -4.206a1 O

F |V/D 2. 500.0 ! WWEI- -- %§§lZ - .. 1 .. , . IVY 0. -B 

SWITCH _ -_____ T/D 5. 000a0

SIGNATURE_ TL -4. 207a1

I-I

THRUST - . . . _. - . . . .

TL Vx
- I -- .

TEST IDENTIFICATION: VALVE #22

STORAGE LOCATION : 06-03

PLOT NO. 2

STROKE TIME

BYPASS TIME

UNSEATING TIME

PROTECTION MARGIN

TMD SWITCHES: CLOSE TO OPEN

: 24.86

: 3.13

: 1.71

: 1.42

SECONDS

SECONDS

SECONDS

SECONDS

AVE RUN THRUST : <PRELOAD

MAX RUN THRUST : PRELOAD

UNSEATING THRUST : 7238 #

THRUST AT CST :NA

TORQUE SW. SETTINB: 1.5/1.5

F

Io I. oooeo

NVy . -7

1T/D 5.000e0

iTL -4.208.1

i 

SWITCH

SIGNATURE

Vy

_ I

I -grrrmm-- .... nrf- I

V/D 2. 500nO

Vy 0. rn-a

T/D 5.000m0

TL 4.207a1

_ ._._. _ . -

THRUST

SIGNATURE

.. .. ... . .I 

TL Vx
TEST IDENTIFICATION: VALVE 22

STORAGE LOCATION : 06-04

PLOT NO. 3

MOTOR CURRENT SWITCHES: OPEN TO CLOSE

STROKE TIME : 25.12 SECONDS PEAK INRUSH

AVE. RUN CURRENT

MAX. RUN CURRENT

SEATING CURRENT

: 5.91 AMPERES

: 1.72 AMPERES

: 1.77 MPERES

: 1.85 AMPERES

,~~~~~~~~~- - --- ------ -r - " -

V/o 1. 000o0

~Vy 0.a-7

T/ 5.000.0

TL -4.208a1 H N

J V/0 1. 0009-1

Vy 0. 0-8

SWITCH h

SIGNATURE 

Vy

F

. ' 151uI111ly . ...... ' - - i

I T/D 5. 000.o

TL -4. 207.1

1 !

I~~~~~~~~~~~~~~

i I _ ._ . _ _ . . _ . _ ...... 

I

i

II

MOTOR CURRENT i--.-

SIGNATURE

____,_._._._

_L V _. _ _ - _ x _ 

TL Yx
TEST IDENTIFICATION: VALVE #22

STORAGE LCATION z 06-05

PLOT NO. 4

STROKE TIME

MOTOR CURRENT SWITCHES: CLOSE TO OPEN

: 24.84 SECONDS PEAK INRUSH

AVE. RUN CURRENT

MAX. RUN CURRENT

END CURRENT

6 AMPERES

1 1.77 AMPERES

1.79 AMPERES

: 1.8 AMPERES

L

V/D 1. OOOoO

Vy .0-7

T/D 5.000.0

TL -4.205al

'm ..... .1"I

7 mL2

V/D 1.0029-i

Vy. . o-B

T/D 5.000e0

TL -4.207al

SWITCH

SIGNATURE _

Vy -

i 4

.TOR CURRENT LII_ 1

SIGNATURE 

TL

1 I

Vx
TEST IDENTIFICATION: VALVE 22

STORAGE LOCATION : 06-0t

PLOT NO. 

TMD LOAD CELL

PRELOAD: 3360 #

K-FACTOR: 9818 /V

K-- I I -- I * V/D 2.500aD

Vy0. -B

|T/O 5. OOOoO

TL~ -4. 207e1

/ PIV/D 1. 000aD / IVy 0.9-7

LOAD CELL

SIGNATURE IT/D 5. 00090

ITL -4.208al

Vy - ITL -4. 208a1

THRUST i

SIGNATURE I

I

L

I I T L.V.x_ *1~~~~~

_ -

Lo _ _ Ad~~~~~~~~~~~~~~~~~~ I_ __.

TL Vx
213

TEST IDS VALVE 23

SYSTEM

SYSTEM NA

FLOW 0

TEMP : AMBIENT

PRESS : ATMOSPHERIC

SFTY REL'D: N/A

OPERATOR

TYPE I SMB

SIZE 3

SERIAL NO. s 101464

ORDER NO. a 336594D

ORIENTATION: VERTICAL

ELECTRICAL VALVE

CONTROL CIR VOLTS:

AC/DC s

OPEN CONTROL

CLOSE CONTROL

MCC

SW. SENSING CIR. :

120

AC

LIMIT

TORQUE

N/A

VOLTAGE

ID. NO.

TYPE I

SIZE I

BODY ORIENTATIONS

INITIAL POSITION:

FINAL POSITION 

DH-V-I

GATE

12

HORIZONTAL

N/A

N/A

TORQUE SWITCH MOTOR

OPEN T.S. SETTING 2.0/1.0

CLOSE T.S. SETTING: 1.5/1.0

LIMITER PLATE a 2.0

TS BALANCEABLE a YES

VOLTS s 460 AC

RATED AMPSi 9.6

SPEED a 1725

HORSEPOWER: 6.56

TEST EQUIPMENT

LOAD CELL

AMP PROBE

MAINFRAME

TMD 

* a 200K--N/A

# s FLUKE(200) N/A

# N/A

N/A
214

Test I.D. Valve 23

Code Comments

4 The close-to-open bypass switch required

adjustment to properly cover the

unseating of the valve.

3 The torque switch was found to be out of

balance by a factor of 2.1 to 1.0. (See

Recommendation 1).

4 The open torque switch setting was changed from 2.0 to 1.0 and the close

torque switch setting was changed from

1.5 to 1.0 to attain target thrust

values.

Recommendations

1. Due to rust on the torque switch, it could not be adjusted. This data

should be considered if it becomes necessary to change the torque

switch settings in the future without the use of the MOVATS 2000

Series System.
215

TEST ID: VALVE 23 BY: RLB DATE: 06-14-85

THRUST SIGNATURE ANALYSIS

STROKE TIME

BYPASS TIME

THRUST AT CST

SEAT THRUST AT Cc

AVE RUN THRUST

MAX RUN THRUST

INERTIAL THRUST

TOTAL THRUST

TORQUE SW. SETTII

TS-OC-05-07

: 52.98 SECONDS

0 SECONDS

: 38146 #

3T: 38237 #

a<PRELOAD

a PRELOAD

a 129 

: 53352 

46: 1.5/1.0

TS-CO-05-08

STROKE TIME

BYPASS TIME

PROTECTION MARGIN

UNSEATING TIME

AVE RUN THRUST

MAX RUN THRUST

UNSEATING THRUST

THRUST AT CST

TORQUE SW. SETTIN(

X 51.96 SECONDS

, 4.44 SECONDS

: 2.44 SECONDS

2 SECONDS

:(PRELOAD

:(PRELOAD

: 33957 N

NA

3: 2.0/1.0

SPRING PACK CALIBRATION SIGNATURE ANALYSIS

TL-CAL-05-06 K-FACTOR: 18211 #/V PRELOADi 26400 

MOTOR CURRENT SIGNATURE ANALYSIS

CS-OC-05-09

STROKE TIME

PEAK INRUSH

AVE. RUN CURRENT

MAX. RUN CURRENT

SEATING CURRENT

* 53.02 SECONDS

: 58.3 AMPERES

a 6.2 AMPERES

* 6.2 AMPERES

a 8.9 AMPERES

CS-CO-05-10

STROKE TIME

PEAK INRUSH

AVE. RUN CURRENT

MAX. RUN CURRENT

END CURRENT

a 52 SECONDS

a 56.7 AMPERES

i 6.1 AMPERES

a 6.1 AMPERES

6 AMPERES
TEST IDENTIFICATION: VALVE 23

STORAGE LOCATION 05-07

PLOT NO. 

ThD SWITCHES: OPEN TO CLOSE

STROKE

BYPASS

TIME

TIME

: 52.98 SECONDS

: 0 SECONDS

AVE RUN THRUST :<PRELOAD

MAX RUN THRUST :<PRELOAD

THRUST AT CST : 38146 4

SEAT THRUST AT CST: 38237 4

INERTIAL THRUST s 129 

TOTAL THRUST : 53352 # TORQUE SW. SETTING:1.5/1.0

* tV/D 1.O0DaO

|T/IO 1.000a1

)TL -3. 100 0'

V/D 2. 5OaO

Vy 0. e-8

T/D 1. OOOl

TL 3. 08QO

_.I

IGTURE Vy

kRUST

IQATURE

I. _ - , 

TL Yx
TEST IDENTIFICATION: VALVE 23

STORAGE LOCATION : 05-08

PLOT NO. 2

TMD SWITCHES: CLOSE TO OPEN

STROKE TIME

BYPASS TIME

UNSEATING TIME

PROTECTION MARGIN

: 51.96 SECONDS

: 4.44 SECONDS

: 2 SECONDS

2.44 SECONDS

AVE RUN THRUST I

MAX RUN THRUST

UNSEATING THRUST :

THRUST AT CST

TORQUE SW. SETTING:

<PRELOAD

<PRELOAD

33957 

N/A

2.0/1.0

V/D 1. 00000

j Vy 0. -7

T/D 1. 000a

JTL -3. 1Oa0

V/D . 500.0

VY 0. 0-8

I - TI 1111llI 1l1l.1 _ T/D 1. 000a I

I - ,- TL -3. 013QO

-a

WITCH

IGNATURE Vy

iRUST

tGNATURE

TL Vx
TEST IDENTIFICATION: VALVE #23

STORAGE LOCATION a 05-09

PLOT NO. 3

MOTOR CURRENT SWITCHES: OPEN TO CLOSE

STROKE TIME : 53.02 SECONDS PEAK INRUSH

AVE. RUN CURRENT

MAX. RUN CURRENT

SEATING CURRENT

: 5.83

: 0.62

: 0.62

: 0.89

AMPERES

AMPERES

AMPERES

AMPERES

I Iv/D 1.000O0

jVy 0.4-7

T/0 1. 000.1

TL -3. 7640 N

I-4

V/D 2.500q-l

Vy 0. 4-7

r -Ii- s nIo ........... . v - lffi T/D 1. 000 I

I- TL -3.7440 WITCH

IGNATURE vyI I I

L _ -.. ......... Vx _._

DTOR CURRENT

IGNATURE

1 .-

TL Vx
TEST IDENTIFICATION: VALVE 23

STORAGE LOCATION z 05-10

PLOT NO. 4

MOTOR CURRENT SWITCHES: CLOSE TO OPEN

STROKE TIME : 52 SECONDS PEAK INRUSH

AVE. RUN CURRENT

MAX. RUN CURRENT

END CURRENT

: 5.67

s0.61

:0.61

:0.6

AMPERES

AMPERES

AMPERES

AMPERES

.

I V/D 1. 0000

Vy 0. a-7

fT/D 1.000a1

ITL -3. 78a *1 to

WITCH

IGNATURE V)

DTOR CURRENT

IGNATURE

'F

0 

V/D 2. 500.-I

Vy 0. .-7

T/D i. 000l

TL -3. 74e0

--. ---- - T-11 - .... -- I

I _ .-

LJK~~~~~~~~~~~~~~~~~~~~~~~~

. -

-~~~~~ ,, -. - - - - - . . 1 - . , -.,. . - - , I 

I

TL
TEST IENTIFICATIONX VALVE 23

STORAGE LOCATI ON 05-06

PLOT NO. 5

TMD L LOAD CELL

PRELOAD: 26400 #

K-FACTOR: 18211 #/V

V/O 1 0000 1

_Vy S.-7

T/D 5. 000a0

TL -1. 8.a0

V/D 2. 500.0 0

_ _ ~~~~~~~~ 0.0-8 ~~~~~~~Vy 

T/D 5.000.D

Vy_ | TL -1.15s0 

OAD CELL

IGNATURE

MRUST

IGNATURE _

-.J- - - L - -- - __ _ _ _ -

TL
221

Test I.D. Valve 24

Code Comments

4 The open torque switch setting was raised from 2.0 to 3.0 and the closed

torque switch setting was raised from

1.5 to 3.0 to achieve the target thrust

load values. (The torque switch

blockplate required removal.)

4 The thrust signatures indicate minor

loading conditions throughout both

opening and closing strokes. (See

Recommendation 1).

4 The open-to-close thrust signature

reveals a minor degradation as the valve

approaches the seat. (See

Recommendation 2).

Recommendations

1. This characteristic is typical of rotating stem type operators and

does not, in our opinion, jeopardize valve operability at this time.

2. The loading condition is not significant enough to warrant inspection

and does not, in our opinion, jeopardize valve operability at this

time. However, it should be monitored during future MOVATS testing.
222

TEST ID: VALVE 24 BY: RLB DATE: 06-14-85

THRUST SIGNATURE ANALYSIS

STROKE TIME

BYPASS TIME

THRUST AT CST

SEAT THRUST AT CE

AVE RUN THRUST

MAX RUN THRUST

INERTIAL THRUST

TOTAL THRUST

TORQUE S4. SETTI

TS-OC-06-07

:7.09 SECONDS

:1.142 SECONDS

22008 

,T: 1591 #

: 239 N

:0 

:22 /

:2450 

IG: 1.5/3.0

TS-CO-06-08

STROKE TIME I

BYPASS TIME I

PROTECTION MARGIN :

UNSEATING TIME

AVE RUN THRUST

MAX RUN THRUST

UNSEATING THRUST :

THRUST AT CST I

TORQUE SW. SETTING:

6.882 SECONDS

1.506 SECONDS

0.348 SECONDS

1.158 SECONDS

467 

732 #

2414 #

N/A

2.0/3.0

SPRING PACK CALIBRATION SIGNATURE ANALYSIS

TL-CAL-06-06 K-FACTOR: 725 #/V PRELOAD: RUNNING LOAD

MOTOR CURRENT SIGNATURE ANALYSIS

CS-OC-06-09

STROKE TIME : 7.12

PEAK INRUSH : 1.91

AVE. RUN CURRENT a 0.84

MAX. RUN CURRENT : 0.84

SEATING CURRENT : 0.81

SECONDS

AMPERES

AMPERES

AMPERES

AMPERES

CS-CO-06-10

STROKE TIME

PEAK INRUSH

AVE. RUN CURRENT

MAX. RUN CURRENT

END CURRENT

: 6.904

:1.94

:0.78

:0.79

:0.79

SECONDS

AMPERES

AMPERES

AMPERES

AMPERES
TEST IDENTIFICATION: ALVE 24

STORAGE LOCATION : 06-07

PLOT NO. I

TMD SWITCHES: OPEN TO CLOSE

STROKE TIME s 7.09 SECONDS AVE RUN THRUST a 239 #

MAX RUN THRUST 0 O

BYPASS TIME 1.142 SECONDS THRUST AT CST a 2008 #

SEAT THRUST AT CST: 1591 #

INERTIAL THRUST a 22 X

TORQUE SW. SETTING:t.5/3.O TOTAL THRUST : 2450 N

lV/D 1.DOOO

Vy 0. a-7

T/D 1. 000.0 11 TL -8. 412.0 w

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . I . . . . . . . . I I I 

SWITCH 1L

SIGNATURE

V/D 2.500.0

Vy . Q-8

T/O 1. OO

TL -8. 414e0

Vy

I . THRUST

SIGNATURE

L - - ---- * 

Ti.. Vx

i

II

I

II __ ___ _ - ___I
PLOT NO. 2

STROKE TIME

BYPASS TIME

UNSEATING TIME

PROTECTION MARGIN

TEST IDENTIFICATION: VALVE #24

STORAGE LOCATION : 06-OS

TMD SWITCHES: CLOSE TO OPEN

: 6.882 SECONDS AVE RUN THRUST : 467 #

MAX RUN THRUST : 732 N

: 1.506 SECONDS UNSEATING THRUST : 2414 #

: 1.158 SECONDS THRUST AT CST : N/A

: 0.348 SECONDS TORQUE SW. SETTING: 2.0/3.0

tv/o 1. 000.O

IVy 0..-7

1 T/D 1. 000.0 II III I ITL -8. 412Q0 rN

N1

a-.

,I I ll llll I W I ll; I I

SWITCH

SIGNATURE

V/D 2. 500D

Vy 0.Q-6

T/D .000mG

TL -8. 414.0

vy F

THRUST |

SIGNATURE

i _--

F,

i. I

II

I

II

I

TL Vx
PLOT NO. 3

STROKE TIME

TEST IDENTIFICATION: VALVE 24

STORAGE LOCATION ! 06-09

MOTOR CURRENT SWITCHES: OPEN TO CLOSE

: 7.12 SECONDS PEAK INRUSH : 1.91 AMPERES

AVE. RUN CURRENT ': 0.84 AMPERES

MAX. RUN CURRENT : 0.84 AMPERES

SEATING CURRENT : 0.81 AMPERES

%.a

i

i

I SWITCH

SIGNATURE

Vy

[

I

- ----~~~ A -~ --J - _ -. -- -..- - - --- -

TL Vx
TEST IDENTIFICATION: VALVE 24

STORAGE LOCATION : 06-10

PLOT NO. 4

MOTOR CURRENT SWITCHES: CLOSE TO OPEN

STROKE TIME : 6.904 SECONDS PEAK INRUSH

AVE. RUN CURRENT

MAX. RUN CURRENT

END CURRENT

: 1.94 AMPERES

: 0.78 AMPERES

: 0.79 AMPERES

: 0.79 AMPERES

. ..- - -------- - ,- - ------ --------- r - [l I iti~ nn~ne

[ lv/U L. uut

Vy 0. w-7

T/D 1.000a0 F- jTL -8.412a0

------ ,

i I J . | QJ

V/D l.O0a-;

U I r I I I , . .

. .

. . .

I . .

. v 

. v 

. v 

. r- - -I -I Vv .- B

SWITCH L--

SIGNATURE T/D .000.0

TL -8. 414nO

Vy I . ~~~I

*1 - - 1

-i

1k

OTOR CURRENT | SIGNATURE I j

_ - __ I _ _. , ..

-ri IL- Y~~~~~~~x
TEST IDENTIFICATION: VALVE #24

STORAGE LOCATION : 06-06

PLOT NO. 5

TMD LOAD CELL

PRELOAD: RING LOAD

K-FACTOR: 725 /V

2V/D . 500.0

Vy . -8

IT/D 1. 000.O

ITL -. 414eO

,T 8.1.

V/D 1. 000eO

Vy 0. -7

T/D 1. WOOO

TL -. 412eO

4

'.

-J

LOAD CELL

SIGNATURy

THRUST

SIGNATURE

I

__ _ . _ . _

TL Vx
228

Test I.D. Valve 25

Code Comments

1,4 The close-to-open bypass switch required

adjustment to properly cover the

unseating of the valve.

4 The open torque switch setting was reduced from 2.0 to <1.5 and the closed

torque switch setting was reduced from

1.75 to >1.5 to attain the target thrust

loads.

4 The torque switch was found to be out of

balance by a factor of 1.73 to 1.0.

This condition was corrected at the time

of the test.

4 The open-to-close thrust signature

reveals that this MOV is developing

excessive inertial forces (approximately

300%) which should be limited by the

operator's motor brake. (See

Recommendation #1).

4 The close-to-open thrust signature

reveals a slightly extended loading

condition during valve unseating. (See

Recommendation #2).

Recommendations

1. The inertial forces are caused mainly by the high stem travel rate

(1.4 in./sec.). These forces are excessive, however, due to the fact

that total thrust is well within design limitations, it is our opinion

that this condition does not jeopardize valve operability. Since

inertial thrust and post-stroke spring pack relaxation are occurring

(apparently) uninhibited, it seems clear that the motor brake is not

functioning as intended. Consideration may be given to performing a diagnostic test to verify this likelihood. Alternatives to motor

brakes are available and this information could be supplied by the

operator manufacturer.

2. The condition does not, in our opinion, appear to be a serious

degradation, however, it should be monitored during future MOVATS

testing.
229

TEST IDm VALVE #25

SYSTEM

SYSTEM I

FLOW I

TEMP

PRESS 3

SFTY REL'D:

NA

0

AMBIENT

ATMOSPHERIC

N/A

OPERATOR

TYPE : SMB

SIZE 2

SERIAL NO. : 105902

ORDER NO. : 3411740

ORIENTATION: VERTICAL

ELECTRICAL VALVE

CONTROL CIR VOLTS:

AC/DC

OPEN CONTROL

CLOSE CONTROL

MCC

SW. SENSING CIR. t

N/A

AC

LIMIT

TORQUE

N/A

VOLTAGE

ID. NO. I

TYPE I

SIZE I

BODY ORIENTATION:

INITIAL POSITION:

FINAL POSITION 

DHV-5A

GATE

14

HORIZONTAL

N/A

N/A

TORQUE SWITCH MOTOR

OPEN T.S. SETTING 

CLOSE T.S. SETTING$

LIMITER PLATE I

TS BALANCEABLE I

2.0/1.4

1.75/1.6

2

YES

VOLTS a 460 AC

RATED AMPS: 7.55

SPEED a 3450

HORSEPOWERi 5.3

LOAD CELL

AMP PROBE

MAINFRAME

TMD 

TEST EQUIPMENT

N a 200K--N/A

# FLUKE(200) N/A

N N/A

N/A
230

TEST IDi VALVE 25# BY: RLB DATE: 06-16-85

THRUST SIGNATURE ANALYSIS

STROKE TIME

BYPASS TIME

THRUST AT CST

SEAT THRUST AT C!

AVE RUN THRUST

MAX RUN THRUST

INERTIAL THRUST

TOTAL THRUST

TORQUE SW. SETTII

TS-OC-04-15

: 9.845 SECONDS

:0 SECONDS

:7943 #

ST: 6486 #

:1457 #

:2397 

:297 

:31584 #

NG: 2.0/>1.5

TS-CO-04-16

STROKE TIME

BYPASS TIME

PROTECTION MARGIN :

UNSEATING TIME

AVE RUN THRUST

MAX RUN THRUST I

UNSEATING THRUST :

THRUST AT CST

TORQUE SW. SETTING:

9.74 SECONDS

1.425 SECONDS

0.815 SECONDS

0.61 SECONDS

1457 3

1927 3

6063 8

7567 N

2.0/(1.5

SPRING PACK CALIBRATION SIGNATURE ANALYSIS

TL-CAL-04-14 K-FACTOR: 9400 /V PRELOAD: C RUNNING LOAD

MOTOR CURRENT SIGNATURE ANALYSIS

CS-OC-04-17

STROKE TIME : 9.88

PEAK INRUSH : 39.7

AVE. RUN CURRENT : 4.2

MAX. RUN CURRENT : 4.2

SEATING CURRENT s 4.8

SECONDS

AMPERES

AMPERES

AMPERES

AMPERES

CS-CO-04-18

STROKE TIME

PEAK INRUSH

AVE. RUN CURRENT

MAX. RUN CURRENT

END CURRENT

: 9.77

X 37.4

2 3.9

: 3.9

I 3.9

SECONDS

AMPERES

AMPERES

AMPERES

AMPERES
TEST IDENTIFICATION: VALVE 25#

STORAGE LOCATION : 04-15

PLOT NO. I

TMD 8k SWITCHES: OPEN TO CLOSE

STROKE TIME : 9.845 SECONDS

BYPASS TIME : 0 SECONDS

TORQUE SW. SETTING:2.0/>1.5

AVE RUN THRUST

MAX RUN THRUST

THRUST AT CST

SEAT THRUST AT

INERTIAL THRUSI

TOTAL THRUST

: 1457 

: 2397 s 7943 #

CST: 6486 #

: 297 %

: 31584 #

V/D 1. 000.0

Vy . -7

T/D 2. 500.O

TL -2. 1575Q1

wI(A

V/D 2. 500.0

Vy 0. 0-8

T/D 2. 500,0

TL -2. 1570al ----------- - --------- -- - ---I.....I....... . ........

WITCH

ICNATURE

Vy -~~~~

b__~~

wST

(GIATURE t--* . . - . . FTTL

--- , ---. , -. - - - - . ~~~ 

Vx
PLOT NO. 2

STROKE TIME

BYPASS TIME

UNSEATING TIME

PROTECTION MAPGIN

TEST DDTIFISATION: VALVE 25#

STORAGE LOCATION : 04-16

TMD SWITCHES: CLOSE TO OPEN

a 9.74 SECONDS AVE RUN THRUST : 1457 #

MAX RUN THRUST : 1927 #

: 1.425 SECONDS UNSEATING THRUST X 6063 4 : 0.61 SECONDS THRUST AT CST : 7567 #

: 0.815 SECONDS TORQUE SW. SETTING: 2.0/<1.5

t%)

wa

WITCH

IGNATURE

ERUST

IGATURE

TL Vx
TEST IDENTIFICATION: VALVE 25#

STORAGE LOCATION : 04-17

PLOT NO. 3

MOTOR CURRENT SWITCHES: OPEN TO CLOSE

STROKE TIME : 9.88 SECONDS PEAK INRUSH

AVE. RUN CURRENT

MAX. RUN CURRENT

SEATING CURRENT

: 39.7 AMPERES

: 4.2 AMPERES

: 4.2 AMPERES

: 4.8 AMPERES

'WITCH

;IGNATURE

|. IV, 1. 000n0

_Vy 0. -7

T/D 2. 500.0

TL -2. 0955l

V/D 1.000u-I

- I 1 _ ~~~~~~~~~Vy 0 -8

T/D 2.50090

TL -2. 0g50al

H1lI I

w

Vy 

1OTOR CURRENT

;IGNATURE

TL 

Vx

TL Vx
TEST IDENTIFICATION: VALVE 25#

STORAGE LOCATION : 04-18

PLOT NO. 4

MOTOR CURRENT SWITCHES: CLOSE TO OPEN

STROKE TIME : 9.77 SECONDS PEAK INRUSH

AVE. RUN CURRENT

MAX. RUN CURRENT

END CURRENT

t 37.4 AMPERES

: 3.9 AMPERES

: 3.9 AMPERES

: 3.9 AMPERES

WITCH

IGNATURE

Vy

OTOR CURRENT

IGNATURE

V/D 1. 00040

_Vy 0. a-7 T/D 2.500.0

TL - 0955.1

T/0 2. 500.0

TL -2.0950a1

_ ~~~~~~~~~~~~~~~~~~~~~~4 m Nip | |~~~~~~~I _ _ _ _ _ _ - - _ _ _ _ _ _ _ _ _ _ _ _ _ ._ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

i i

TL Vx
TEST IDENTIFICATION: VALVE 25#

STORAGE LOCATION : 04-14

PLOT NO. 5

TMD & LOAD CELL

PRELOAD: C RNNING LOAD

K-FACTOP: 400 #/V

71v/D 1 D00*0

IVy ° ct-7

T/0 . 25000

I~~ ~ ITL -1. 431001

IV/D 2. 500vC

vy 0. 0-a wa

T/D 1. 250aO

TL -1. 4305al

Vy -I

LOAD CELL

SIGNATURE

IRUST

SIGNATURE

I ,

-~~~~ - --.. -.--- .

_._._. iL .

.

..; . - - .. - -IJ .

-. ---I- -. -

TL .. Vx
236

TEST ID: VALVE 26

SYSTEM

SYSTEM

FLOW

TEMP

PRESS

SFTY REL'D:

N/A

0

AMBIENT

ATMOSPHERIC

N/A

OPERATOR

TYPE : GATE

SIZE : 00

SERIAL NO. : 134723

ORDER NO. : 533079A

ORIENTATION: VERTICAL

ELECTRICAL VALVE

CONTROL CIR VOLTS.

AC/rvC

OPEN CONTROL

CLOSE CONTROL 2

MCC

SW. SENSING CIR. :

120

AC

LIMIT

LIMIT

N/A

VOLTAGE

ID. NO.

TYPE

SIZE

BODY ORIENTATION:

INITIAL POSITION:

FINAL POSITION :

RCV- I

GATE

2.5

HORIZONTAL

N/A

N/A

TORQUE SWITCH MOTOR

OPEN T.S. SETTING : 2.25/2.25

CLOSE T.S. SETTING: 1.0/1.0

LIMITER PLATE a 2.75

TS BALANCEABLE : NO

VOLTS : 460 AC

RATED AMPS: 4

SPEED : 1700

HORSEPOWER: 1.6

TEST EQUIPMENT

LOAD CELL : 5K--N/A

AMP PROBE # : FLUKE(20) N/A

MAINFRAME # N/A

TMD a N/A
237

Test I.D. Valve 26

Code Comments

1,4 The close-to-open bypass switch required

adjustment to preclude an inadvertent

torque switch trip during operator

hammerblow.

1 The open-to-close thrust and motor

current signatures indicate that the

disc does not contact the seat. (See

Recommendation 1).

Recommendations

1. An assessment of this condition should be made by plant personnel to

determine if an adjustment to the close limit switch should be made to

allow the operator to develop a seating force.
238

TEST ID: VALVE #26 BY: RLB DATE: 06-16-85

THRUST SIGNATURE ANALYSIS

TS-OC-06-12.

STROKE TIME : 4.272 SECONDS

BYPASS TIME : 0.59 SECONDS

THRUST AT CST : PRELIJAD

SEAT THRUST AT CST: PRELOAD

AVE RUN THRUST :<PRELOAD

MAX RUN THRUST :CPRELOAD

INERTIAL THRUST : 0 %

TOTAL THRUST :2PPELOAD

TORQUE SW. SETTING: 1.0/1.0

TS-CO-06-13

STROKE TIME

BYPASS TIME

PROTECTION MARGIN

UNSEATING TIME

AVE RUN THRUST

MAX RUN THRUST

UNSEATING THRUST

THRUST AT CST

TORQUE SW. SETTING

: 4.206 SECONDS

: 0.59 SECONDS

: 0.164 SECONDS

: 0.426 SECONDS

:<PRELOAD

:(PRELOAD

: <PRELOAD

: 9234

G: 2.25/2.25

SPRING PACK CALIBRATION SIGNATURE ANALYSIS

TL-CAL-06-11 K-FACTOR: 8265 /V PRELOAD: 4640 

MOTOR CURRENT SIGNATURE ANALYSIS

CS-OC-06-14

STROKE TIME : 4.292

PEAK INRUSH : 10.64

AVE. RUN CURRENT : 2.65

MAX. RUN CURRENT : 2.65

SEATING CURRENT : 2.65

SECONDS

AMPERES

AMPERES

AMPERES

AMPERES

CS-CO-06-15

STROKE TIME

PEAK INRUSH

AVE. RUN CURRENT

MAX. RUN CURRENT

END CURRENT

: 4.24

:10.35

: 2.76

:2.76

: 2.76

SECONDS

AMPERES

AMPERES

AMPERES

AMPERES
TEST IDENTIFICATION: VALVE 26

STORAGE LOCATION : 06-12

PLOT NO. I

TMD SWITCHES: OPEN TO CLOSE

STROKE TIME : 4.272 SECONDS

BYPASS TIME 0.59 SECONDS

TORQUE SW. SETTING:I.0/1.0

AVE RUN THRUST

MAX RUN THRUST

THRUST AT CST

SEAT THRUST AT

INERTIAL THRUST

TOTAL THRUST

i(PRELOAD

:<PRELOAD

:CPRELOAD

CSTi'PRELOAD

:0 

'CPRELOAD

r-  , __

I

|V/D 1.000sO dVy 0.a-7

IT/D 1. 000.0

iTL -8.414.0

IT

w0

. .

> . . . . . . , . . , , . . . . . R

SWITCH F

SIGNATURE r

vy L

THRUST

SIGNATURE 1

i

I

II I I I I I I I I I I I I

V/D 2. 500e0

Vy 0. -8

T/D 1.00090

TL -. 412QO

-.. - . - - - - ... , I I 

TL Vx
TEST IDENTIFICATION: VALVE 26

STORAGE LOCATION : 06-13

PLOT NO. 2

TMD be SWITCHES: CLOSE TO OPEN

STROKE TIME

BYPASS TIME

UNSEATING TIME

PROTECTION MARGIN

: 4.206 SECONDS

: 0.59

: 0.426

: 0.164

SECONDS

SECONDS

SECONDS

AVE RUN THRUST

MAX RUN THRUST

UNSEATING THRUST : THRUST AT CST

TORQUE SW. SETTING:

<PRELOAD

<PRELOAD

<PRELOAD

9234

2.25/2.25

4-

0D

SWITCH

SIGNATURE

Vy

THRUST

SIGNATURE

TL Vx
TEST IENTIFICATION: VALVE #26

STORAGE LOCATION : 06-14

PLOT NO. 3

MOTOR CURRENT & SWITCHES: OPEN TO CLOSE

STROKE TIME : 4.292 SECONDS PEAK INRUSH

AVE. RUN CURRENT

MAX. RUN CURRENT

SEATING CURRENT

: 10.64

: 2.65

: 2.65

i 2.65

AMPERES

AMPERES

AMPERES

AMPERES

lV/D 1.00090

jVy 0.n-7

T/D 1. 0009a

TL -. 414eO

SWITCH

SIGNATURE

I I . * * I * * I I I I ' I 1 V/D 2.500e-1

Vy 0..-7

T/D 1. 00090

TL -8.412e0

Vy -

I ._ ,.

_ _

.4

I

MOTOR CURRENT

SIGNATURE

_._._._._._

I

TL Yx
TEST IDENTIFICATION: VALVE #26

STORAGE LOCATION : 06-15

PLOT NO. 4

MOTOR CURRENT & SWITCHES! CLOSE TO OPEN

STROKE TIME : 4.24 SECONDS PEAK INRUSH t 10.35

AVE. RUN CURRENT : 2.76

MAX. RUN CURRENT : 2.76

END CURRENT : 2.76

AMPERES

AMPERES

AMPERES

AMPERES

N

..

N

SWITCH

SIGNATURE

Vy I

ii

11.

MOTOR CURREb

SIGNATURE

-A--

TL Vx
TEST IDENTIFICATIONt VALVE 26

STORAGE LOCATION a 06-11

PLOT NO. 5

* TMD LOAD CELL

PRELOAD3 4640 #

K-FACTOR: 8265 /V

, . ___ *1.

V/D 2.500.0

Vy 0. o-B

T/0 1. 000.0

TL -8. 4120 'F

/.

V/D 1. 000.0

_Vy 0.,-7

T/D 1. O.OOQ

TL -8.414eO

I..

WOAD CELL I

SIGANTUJRE

VY_i

THRUST

SIGNATURE L

I

I TL Vx

TL Vx
244

TEST ID: VALVE #27

SYSTEM

SYSTEM : N/A

FLOW s 0

TEMP : AMBIENT

PRESS : ATMOSPHERIC

SFTY REL'D: N/A

OPERATOR

TYPE : SMB

SIZE : 00

SERIAL NO. : 104595

ORDER NO. : 3381639

ORIENTATION: VERTICAL

ELECTRICAL VALVE

CONTROL CIR VOLTS:

AC/DC

OPEN CONTROL

CLOSE CONTROL

MCC

SW. SENSING CIR. i

120

AC

LIMIT

TORQUE

N/A

VOLTAGE

ID. NO.

TYPE

SIZE

BODY ORIENTATION:

INITIAL POSITION:

FINAL POSITION 

RC-V-2

GATE

2.5

HORIZONTAL

N/A

N/A

TORQUE SWITCH MOTOR

OPEN T.S. SETTING : 2.75/2.75

CLOSE T.S. SETTING: 2.5/2.5

LIMITER PLATE a 2.75

TS BALANCEABLE : YES

VOLTS : 460 AC

RATED AMPS: 4

SPEED : 1700

HORSEPOWER: 1.6

TEST EQUIPMENT

LOAD CELL : 5K--N/A

AMP PROBE : FLUKE(20) N/A

MAINFRAME : N/A

TMD : N/A
245

Test I.D. Valve 27

Code - Comments

3 This particular valve exibits a cyclic

loading condition that may correspond to

operator gear wear. It shows up in both

directions of the thrust signatures.

(See Recommendation #).

4 The close-to-open bypass switch required

adjustment to properly cover the

unseating of the valve.

4 During equipment installation, it was

noted that the spring cartridge cap was

full of grease. (See Recommendation

#2).

Recommendations

1. This condition does not, in our opinion, jeopardize the operability of

the valve at this time.

2. It should be noted that the Belleville springs do not require

lubrication to function properly.
246

TEST ID: VALVE 27 BY: RLB DATE: 06-14-85

THRUST SIGNATURE ANALYSIS

STROKE TIME

BYPASS TIME

THRUST AT CST

SEAT THRUST AT CS

AVE RUN THRUST

MAX RUN THRUST

INERTIAL THRUST

TOTAL THRUST

TORQUE SW. SETTIt

TS-OC-06-17

:9.925 SECONDS

:0.98 SECONDS

:6383 #

iTt 5844 

s 492 

:739 #

:10 

:7041 #

IG: 2.5/2.5

TS-CO-06-18

STROKE TIME

BYPASS TIME

PROTECTION MARGIN :

UNSEATING TIME

AVE RUN THRUST

MAX RUN THRUST

UNSEATING THRUST :

THRUST AT CST :

TORQUE SW. SETTING:

9.515 SECONDS

1.515 SECONDS

0.4 SECONDS

1.115 SECONDS

305 N

410 #

4330 

NA

2.75/2.75

SPRING PACK CALIBRATION SIGNATURE ANALYSIS

TL-CAL-06-16 K-FACTOR: 2347 /V PRELOAD: RUNNING LOAD

MOTOR CURRENT SIGNATURE ANALYSIS

CS-OC-06-19

STROKE TIME : 9.99

PEAK INRUSH : 5.92

AVE. RUN CURRENT : 1.82

MAX. RUN CURRENT : 1.82

SEATING CURRENT : 2.4

SECONDS

AMPERES

AMPERES

AMPERES

AMPERES

CS-CO-06-20

STROKE TIME

PEAK INRUSH

AVE. RUN CURRENT

MAX. RUN CURRENT

END CURRENT

: 9.55 SECONDS

: 5.86 AMPERES

: 1.77 AMPERES

: 1.77 AMPERES

: 1.75 AMPERES
TEST IDENTIFICATION: VALVE 27

STORAGE LOCATION 06-17

PLOT NO. 1

TMD SWITCHESi OPEN TO CLOSE

STROKE TIME

BYPASS TIME

: 9.925 SECONDS

: 0.98 SECONDS

AVE RUN THRUST : 492 #

MAX RUN THRUST i 739 #

THRUST AT CST : 6383 

SEAT THRUST AT CSTs 5844 

INERTIAL THRUST : 10 

TORQUE SW. SETTING:2.5/2.5 TOTAL THRUST a 7041 $

m

i I .. . . . I .

V/D 2. 500eO

Vy 0. o-B

T/D 2. 500QO

TL -2. D820QI

I_. SWITCH

SIGNATURE

THRUST

SIGNATURE

V/D 1. 000Q0

Vy 0. e-7 .

T/D 2. 500O

TL -2.0825.l

vy . . z

_-- .-- 

-I

TL 

Vx

TL Vx
TEST IDENTIFICATION: VALVE #27

STORAGE LOCATION : 06-18

PLOT NO. 2

TMD SWITCHES: CLOSE TO OPEN

STROKE TIME

BYPASS TIME

UNSEATING TIME

PROTECTION MARGIN

: 9.515 SECONDS

: 1.515 SECONDS

: 1.115 SECONDS

: 0.4 SECONDS

AVE RUN THRUST s

MAX RUN THRUST

UNSEATING THRUST : THRUST AT CST

TORQUE SW. SETTING:

305 #

410 i

4330 #

N/A

2.75/2.75

I

SWITCH

SIGNATURE

Fr i/ 1.000.0

Vy 0.a-7

T/D 2. 50090

ITL -2. 0825al

"w^§m~~~~~wllllmll~~~~

_ I

o

.

JV/D 2. 500Q0

jVy 0. e-8

T/D 2. 500O

ITL -2. 0620s1

V)

THRUST

SIGNATURE

'Ir

FL _ ._. ._ .

K .Vx.. 

.4

TL Vix
TEST IDENTIFICATION: VALVE 27

STORAGE LOCATION : 06-19

PLOT NO. 3

MOTOR CURRENT SWITCHES: OPEN TO CLOSE

STROKE TIME : 9.99 SECONDS PEAK INRUSH

AVE. RUN CURRENT

MAX. RUN CURRENT

SEATING CURRENT

5.92

* 1.82

. 1.82

2.4

AMPERES

AMPERES

AMPERES

AMPERES

^-- ~ ~ ~ ~ ~ - -- . . ...... ................ . L ._ .- A A- _

1- 

i -

Vy k

7

Y/O 1. UUQu

VY . -7

IT/D 2. 500RO

ITL -2. 0525al

11

I

...# .. H.... I 

.1

,

%O

SWITCH

SIGNATUltE

4OTOR CURR

SIGNATUR

V/D 1. OUO-1

Vy 0. n-O

IT/D 2. 500QO

TL -2. 0620R1

ENT

I . ~~~~~~~~~~~~~~~~~~~~~~~~~~~~I JI ." _

....... ,, 

TL ~ ~ ~ ~ ~ ~ ~ ~ x~ V

.

TL
TEST IDENTIFICATION: VALVE 27

STORAGE LOCATION : 06-20

PLOT NO. 4

MOTOR CURRENT & SWITCHES: CLOSE TO OPEN

STROKE TIME : 9.55 SECONDS PEAK INRUSH

AVE. RUN CURRENT

MAX. RUN CURRENT

END CURRENT

: 5.86

: 1.77

: 1.77

: 1.75

AMPERES

AMPERES

AMPERES

AMPERES

r - 1._

l~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

I~ 1 ii x

I I

l1

L

V/0 1. 000.0 I

IVy 0..-7

IT/D 2.500D 1

TL -2. 0525e

-Y /0 1. O000 I

IVy O.Q-S i

n 

,

0

T/D 2. 500Q0

TL -2.0620.1

Ii -

c ~_ , _ i 

L - . _ .. . - . . . .--.. ._ - . . - 5 -- -.*--

TL Vx
TEST IDENTIFICATION: VALVE 7927

STORAGE LOCATION : 06-16

PLOT NO. 5

TMD & LOAD CELL

PRELOAD: C RMING LOAD

K-FACTOR: 2347 #/V

jV/D . 500.0

Vy 0.n-8

T/D 2. 500.O

TL -2. 1030.1

V/D 1. 000.0

Vy 0.-7

LOAD CELL T/D 2. 500

SIGNATURE ,TL 2. 0350

Yy | ~~~~~~~~~~~~~~~~~~~~TL -2. 1035e 1

THRUST _

SIGNATURE L .

TL Vx
252

TEST ID VALVE 28

SYSTEM

SYSTEM :

FLOW

TEMP X

PRESS :

SFTY REL'D:

N/A

0

AMBIENT

ATMOSPHERIC

N/A

OPERATOR

TYPE : SMB

SIZE 00

SERIAL NO. : 97218A

ORDER NO. : 337610

ORIENTATION: VERTICAL

ELECTRICAL VALVE

CONTROL CR VOLTS:

AC/DC

OPEN CONTROL :

CLOSE CONTROL :

MCC :

SW. SENSING CIR, :

N/A

AC

LIMIT

TORQUE

N/A

VOLTAGE

ID. NO.

TYPE

SIZE I

BODY ORIENTATION:

INITIAL POSITION:

FINAL POSITION :

RCV-3

N/A

2.5

HORIZONTAL

NWA

N/A

TORQUE SWITCH MOTOR

OPEN T.S. SETTING : 2.5/2.5

CLOSE T.S. SETTING: 1.5/1.5

LIMITER PLATE a NONE

TS BALANCEABLE , YES

VOLTS : 460 AC

RATED AMPS: 2

SPEED : 1700

HORSEPOWER: 1.0

LOAD CELL

AMP PROBE

MAINFRAME

TMD *

TEST EQUIPMENT

# : N/A--N/A

N SIMPSONN/A N/A

N a N/A

: N/A
253

Code

4

Test ID. Valve 128

Comments

The close-to-open bypass switch required

adjustment to properly cover the

unseating of the valve. (See

Recommendation #1).

Recommendations

1. No further corrective action necessary at this time.

a
254

TEST IDs VALVE 28 BY: RLBJ DATE: 06-17-85

THRUST SIGNATURE ANALYSIS

STROKE TIME

BYPASS TIME

THRUST AT CST

SEAT THRUST AT C!

AVE RUN THRUST

MAX RUNl THRUST

INERTIAL THRUST

TOTAL THPUST

TORQUE S. SETTIt

TS-OC-07-01

: 29.91 SECONDS

: 1.44 SECONDS

: 1.945 V

3T: 1.925 V

: 0.02 V

: V

: 12 [';

: 2.185 V

4G: 1.5/1.5

TS-CO-07-02

STROKE TIME I

BYPASS TIME

PROTECTION MARGIN :

UNSEATING TIME

AVE RUN THRUST

MAX RUlJ THRUST

UNSEATING THRUST :

THRUST AT CST

TORQUE S. SETTING:

29.41 SECONDS

4.13 SECONDS

2.81 SECONDS

1.32 SECONDS

0.06 V

0.06 V

0.11 V

N/A

-*5/2.5

SPRING PACK CALIBRATION SIGNATURE ANALYSIS

tlO SPRING PACK CALIBRATION SIGNATURE ACQUIRED

MOTOR CURRENT SIGNATURE ANALYSIS

CS-OC-07-03

STROKE TIME : 29.94

PEAK INRUSH : 7.66

AVE. RUN CURRENT : 1.82

MAX. RUN CURRENT : 1.82

SEATING CURRENT : 2.38

SECONDS

AMPERES

AMPERES

AMPERES

AMPERES

CS-CO-07-0 4

STROKE TIME

PEAK INRUSH

AVE. RUN CURRENT

MAX. RUN CURRENT

END CURRENT

: 29.41

: 7.26

: 1.94

: 1.94

: 1.94

SECONDS

AMPERES

AMPERES

AMPERES

AMPERES

a
TEST IDENTIFICATION: VALVE #28

STORAGE LOCATION : 07-01

PLOT NO. I

TMD SWITCHES: OPEN TO CLOSE

STROKE TIME

BYPASS TIME

: 29.91 SECONDS

: 1.44 SECONDS

AVE RUN THRUST : 0.02 V

MAX RUN THRUST : V

THRUST AT CST a 1.945 V

SEAT THRUST AT CST: 1.925 V

INERTIAL THRUST : 12 

TORQUE SW. SETTING: 1.5/1.5 TOTAL THRUST a 2.185 V

-

jV/D 1. 0000 j Vy 0. s-7

T/0 5.000n0

JTL -4.173nl

f.3

%A,

L'

Vy F

m

I l-11 lll. --- TTIT'l- I

..........- L -I

V/D 2.500.0

Vy 0. -6

T/D 5. 000Q

TL -4.172e

L

TL 

Vx

TL Vx
TEST IDENTIFICATONtl: VALVE #28

STORAGE LOCATION : 07-02

PLOT NO. 2

TMD SWITCHES: CLOSE TO OPEN

STROKE TIME

BYPASS TIME

UNSEATING TIME

PROTECTION MARGIN

: 29.41 SECONDS

: 4.13

: 1.32 : 2.81

AVE RUN THRUST

MAX RUN THRUST I

UNSEATING THRUST : THRUST AT CST

TORQUE SW. SETTING:

0.06 V

0.06 V

0.11 V

N/A

2.5/2.5

SECONDS

SECONDS

jV/o 1. 000.0 ]Vy 0. .-7

IT/D 5. 000.O

jTL -4. 173QI U' cr' F M t i I i I IIV/D 2.500.0

Vy 0. u-6

T/D 5.000.0

TL -4. 172.l Vy i

I i~tl~ --- i,,,.g- L =

. . i I

itV

TL Vx
TEST IDENTIFICATION: VALVE #28

STORAGE LOCATION : 07-03

PLOT NO. 3

MOTOR CURRENT SWITCHES: OPEN TO CLOSE

STROKE TIME 29.94 SECONDS PEAK INRUSH

AVE. RUN CURRENT

MAX. RUN CURRENT

SEATING CURRENT

: 7.66 AMPERES

: 1.82 AMPERES : 1.82 AMPERES

2.38 AMPERES

,. _ ._ ,

IV/D 1.000oO iVy 0. e-7

iT/D 5.OOOaO

{ TL -4. 173al1 t%3

-A1 t- IV/D 2. 500e-1

Vy 0. -7

T/D 5. 000o0

jTL -4. 172ol ' - -- wmn 1ml111777fly ..- - I

Vy L g-2jTL -4. 172.

.1

I -

-

I

TL 

Vx

TL Vx
IEST IDENTIF'CATION: VALVE #28

STORAGE LOCATION : 07-04

PLOT NO. 4

MOTOR CURRENT & SWITCHES: CLOSE TO OPEN

STROKE TIME 29.41 SECONDS PEAK INRUSH : 7.26 AMPERES

AVE. RUN CURRENT : 1.94 AMPERES

MAX. RUN CURRENT : 1.94 AMPERES

END CURRENT : 1.94 AMPERES

[ - , ~1~-* - r I__

V/ 1. 000910

Vy o.-7

T/D 5.000.0

TL -4.172.1 I N

~V/D 2. 500Q- I 

_ [7 Vy D0.-7

T/D 5. 000Q0

Vy ) I + TL -4.171Q1

$ _. _ -i _

- - _ _ _ _ L

TL Vx
259

Test I.D. Valve 29

Code

1,4

Comments

The close-to-open

reset to properly

the valve and the wear.

The close-to-open

revealed a slight

occurring towards

guides.

bypass switch was

cover the unseating of

possible valve guide

thrust signature

galling condition

the end of the valve

4

4 The open-to-close thrust signature

indicates an unusual loading condition

occurring approximately six seconds into

the open-to-close stroke. (See

Recommendation #1).

Recommendations

1. This condition does not, in our opinion, jeopardize the operability of

the valve at this time.
260

TEST ID: VALVE #29

SYSTEM

SYSTEM I

FLOW :

TEMP

PRESS I

SFTY REL'D:

N/A

0

AMBIENT

ATMOSPHERIC

N/A

OPERATOR

TYPE : SMB

SIZE 0

SERIAL NO. : 144044

ORDER NO. : 358972K

ORIENTATION: VERTICAL

ELECTRICAL VALVE

CONTROL CIR VOLTS:

AC'DC 

OPEN CONTROL

CLUSE CONTROL

MCC I

SW. SENSING CIR. :

120

AC

LIMIT

TORQUE

N/A

CURRENT

ID. NO. : 2-FCV-5-42

TYPE : GATE

SIZE : 16

BODY ORIENTATION: HORIZONTAL

INITIAL POSITION: N/A

FINAL POSITION : N/A

TORQUE SWITCH MOTOR

OPEN T.S. SETTING : 2.0/2.0

CLOSE T.S. SETTING: 2.25/2.25

LIMITER PLATE : 5

TS BALANCEABLE a YES

VOLTS a 230/460 AC

RATED AMPS: 14

SPEED : 1750

HORSEPOWER: 2.6

TEST EQUIPMENT

LOAD CELL # N/A--N/A

AMP PROBE : SIMPSON(20) N/A

MAINFRAME N : N/A

TMD N : N/A
261

TEST ID: VALVE 29 BY: RLBJ DATE: 06-17-85

THRUST SIGNATURE ANALYSIS

STROKE TIME

BYPASS TIME

THRUST AT CST

SEAT THRUST AT C'

AVE RUN THRUST

MAX RU!] THRUST

INERTIAL THRUST

TOTAL THRUST

TORQUE SW. SETTIt

TS-OC-02-08

: 76.72 SECONDS

: 0.96 SECONDS

:2.01 V

T: 1.885 V

:0.105 V

:0.28 V

:24 

i2.5 V

4G: 2.25/2.25

TS-CO-02-07

STROKE TIME I

BYPASS TIME

PROTECTION MARGIN :

UNSEATING TIME

AVE RUN THRUST

MAX RUN THRUST

UNSEATING THRUST :

THRUST AT CST

TORQUE SW. SETTING:

75.94 SECONDS

7.84 SECONDS

5.24 SECONDS

2.6 SECONDS

0.16 V

0.19 V

1.04 V

N/A

2.0/2.0

SPRING PACK CALIBRATION SIGNATURE ANALYSIS

NO SPRING PACK CALIBRATION SIGNATURE ACQUIRED

MOTOR CURRENT SIGNATURE ANALYSIS

CS-OC-02-10

STROKE TIME : 76.72

PEAK INRUSH : 12.56

AVE. RUN CURRENT : 5.16

MAX. RUN CURRENT t 5.16

SEATING CURRENT : 5.54

SECONDS

AMPERES

AMPERES

AMPERES

AMPERES

CS-CO-02-09

STROKE TIME

PEAK INRUSH

AVE. RUN CURRENT

MAX. RUN CURRENT

END CURRENT

76 SECONDS

: 13.04 AMPERES

i 5.1 AMPERES

5.1 AMPERES

i 5.1 AMPERES
TE°T DENTI-'C-ION: t)ALVE #29

STORAGE LOCATION : C2-0S

PLOT NO. I

TMD SWITCHES: OPEN TO CLOSE

STROKE TIME

BYPASS TIME

: 76.72 SECONDS

: 0.96 SECONDS

AVE RUN THRUST

MAX RUN THRUST

THRUST AT CST :

SEAT THRUST AT CST:

INERTIAL THRUST

TOTAL THRUST

0. 105 V

0.28 V

2.01 V

1.885 V

24 

TORQUE SW. SETTING: 2.25/2.25 2.5 V

V/D 1.000e-I

Vy 0. -8

T/D 1. 0001

TL -8. 192.1 0'

N

SWITCH

SIGNATURE I~~~~~~~~~~~~~~~~iINw

V/D 2.500.0

Vy 0. c-B

T/0 1. 000.I

TL -8. 194.1

Vy f

Dim

SIGNATURE

a ._ . . . .. . . _ . . .. . . . - ' - ~~~~~- '' 1

H

TL Vx
TEST IDENTIFICATION: VALVE 29

STORAGE LOCATION : 02-07

PLOT NO. 2

TMD e SWITCHES: CLOSE TO OPEN

STROKE TIME

BYPASS TIME

UNSEATING TIME

PROTECTION MARGIN

: 75.94 SECONDS

: 7.84

: 2.6 SECONDS : 5.24 SECONDS

AVE RUN THRUST : 0.16 V

MAX RUN THRUST : 0.19 V

UNSEATING THRUST : 1.04 V

THRUST AT CST : N/A

TORQUE SW. SETTING: 2.0/2.0

V/D 1.000,-i

Vy 0. -a

T/D 1. 000l

TL -8. 12R1 

SWITCH

SIGNATURE

ihiuillniimlll o

0%

U)

-

-I

- 1IIIIIIIIIII!IIIflhI

V/D 2. 5000

Vy 0. a-6

T/D 1. 0001l

TL -. 1 94n I

vy _ J ~~~~~.X - -~ . ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ L -8 9 .

- I

-j SIGNATURE

. .

--L-L

TL Vx
TEST IDENTIFICATION: VALVE #29

STORAGE LOCAT I ON : 02-10

PLOT NO. 3

MOTOR CURRENT SWITCHES: OPEN TO CLOSE

STROKE TIME : 76.72 SECONDS PEAK INRUSH

AVE. RUN CURRENT

MAX. RUN CURRENT

SEATING CURRENT

: 12.56

5.16

: 5.16

: 5.54

AMPERES

AMPERES

AMPERES

AMPERES

SWITCH

SIGNATURE

V/D 1.000-l

_VY 0. Q-8

T/D 1. OOO1e

TL -8. MalQ

V/D 1. OOOe

_---------- -- Vy 0. e-7

T/D 1. OOOQI

L _ _ _

a%

VY F

DTOR CURRENT

SIGNATURE

TL
TEST DEtNT!lATION: V'ALVE #29

SORAGE LOCMTION s 02-09

PLOT NO. 4

STROKE TIME

MOTOR CURRENT SWITCHES: CLOSE TO OPEN

: 76 SECONDS PEAK INRUSH

AVE. RUN CURRENT

MAX. RUN CURRENT

END CURRENT

z 13.04 AMPERES

: 5.1 AMPERES

: 5.1 AMPERES

: 5.1 AMPERES

. . . .

V/D 1.000e-1

Vy .a-8

T/0 1.000aI

TL -8. 192al

a%

en

SWITCH

SIGNATURE

II 11 I :

V/D 1. 000s0

Vy 0.9-7

T/D 1. 000al

TL -8. 192al

Vy F- *-I

4OTOR CURRENT 1 -- SIGNATURE

TL Vx
266

Test I.D. Valve #30

Code Comments

1,4 The close-to-open bypass switch required

adjustment to properly cover the

unseating of the valve.

3 During equipment installation, the

spring cartridge cap was found to be

full of grease.

4 The thrust signatures revealed a gap of

.170" in the spring pack assembly.

Recommendations

1. It should be noted that the Belleville springs do not require

lubrication to function properly.
267

TEST IDt VALVE 30

SYSTEM

SYSTEM a

FLOW

TEMP

PRESS

SFTY RELID:

0

AMBIENT

ATMOSPHERIC

OPERATOR

TYPE : SMB

SIZE : 0

SERIAL NO. : 144035

ORDER NO. : 358972F

ORIENTATION: VERTICAL

ELECTRICAL VALVE

CONTROL CIR VOLTS: 120

AC/DC : AC

OPEN CONTROL : LIMIT

CLOSE CONTROL : TORQUE

MCC

SW. SENSING CIR. : CURRENT

TORQUE SWITCH

OPEN T.S. SETTING 3.0/3.0

CLOSE T.S..SETTING: 1.5/1.5

LIMITER PLATE a 5.0

TS BALANCEABLE a YES

ID. NO. : 2-FCV-1-1378

TYPE i GATE

SIZE I 8"

BODY ORIENTATION: HORIZONTAL

INITIAL POSITI0N:

FINAL POSITION a

MOTOR

VOLTS a 460 AC

RATED AMPS: 5.75

SPEED a 1700

HORSEPOWER: 2.6

TEST EQUIPMENT

LOAD CELL : N/A--

AMP PROBE # : SIMPSON(20)

MAINFRAME :

TMD :
268

TEST ID: VALVE 30 BY: RLB DATE: 06-16-85

THRUST SIGNATURE ANALYSIS

STROKE TIME

BYPASS TIME

THRUST AT CST

SEAT THRUST AT Cc

AVE RUN THRUST

MAX RUN THRUST

INERTIAL THRUST

TOTAL THRUST

TORQUE SW. SETTIt

TS-OC-02-03

:43.06 SECONDS

:0.38 SECONDS

:0.755 V

ST: 0.615 V

:0.1 V

:0.125 V

:76 %

:1.33 V

16: 1.5/1.5

TS-CO-02-02

STROKE TIME

BYPASS TIME

PROTECTION MARGIN:

UNSEATING TIME

AVE RUN THRUST I

MAX RUN THRUST

UNSEATING THRUST :

THRUST AT CST

TORQUE SW. SETTING:

42.9 SECONDS

4.04 SECONDS

2.4 SECONDS

1.64 SECONDS

0.09 V

0.1 V

0.355 V

N/A

3.0/3.0

SPRING PACK CALIBRATION SIGNATURE ANALYSIS

NO SPRING PACK CALIBRATION SIGNATURE ACQUIRED

MOTOR CURRENT SIGNATURE ANALYSIS

CS-OC-02-05

STROKE TIME : 43.14

PEAK INRUSH : 16.89

AVE. RUN CURRENT . 5.51

MAX. RUN CURRENT t 5.51

SEATING CURRENT : 5.54

SECONDS

AMPERES

AMPERES

AMPERES

AMPERES

CS-CO-02-04

STROKE TIME

PEAK INRUSH

AVE. RUN CURRENT

MAX. RUN CURRENT

END CURRENT

: 42.82

: 16.08

: 5.15

: 5.15

: 5.15

SECONDS

AMPERES

AMPERES

AMPERES

AMPERES
rEST IDETIFICATION: tALVE 30

STORAGE LOCATION : 02-03

PLOT NO. I

TMD SWITCHES: OPEN TO CLOSE

STROKE TIME

BYPASS TIME

: 43.06 SECONDS

: 0.38 SECONDS

AVE RUN THRUST

MAX RUN THRUST

THRUST AT CST ; SEAT THRUST AT CST:

INERTIAL THRUST

TOTAL THRUST

0.1 V

0.125 V

0.755 V

0.615 V

76 

1.33 V TORQUE SW. SETTING: 1.5/1.5

V/D 1.000-l

Vy 0. o-8

T/D 1.0001l

TL -8. 190.1

V/D 2. SOOe

Vy 0.g-6

T/D 1. 0001

TL -8. 192l

I 

o0m

WITCH

IGNATURE

Vy _

HRUST

IGNATURE

., . . _ . .

TL 

Vx

TL Vx
TEST IDEJT!cICATION: ALVE #30

STORAGE LOCATION : 02-02

PLOT NO. 2

TMb & SWITCHES: CLOSE TO OPEN

STROKE TIME

BYPASS TIME

UNSEATING TIME

PROTECTION MARGIN

: 42.8 SECONDS

: 4.04

: 1.64 SECONDS

: 2.4 SECONDS

AVE RUN THRUST

MAX RUN THRUST

UNSEATING THRUST : THRUST AT CST

TORQUE SW. STTING:

0.09 V

0.1 V

0.355 V

N/A

3.0/3.0

Vy 

V/D .000.-1

Vy U.s-8

T/D 1. 000I

TL -8. 190 1

V/D 2.500.0

Vy 0.0-8

T/D 1. 000a I

TL -B. 192Q.

_ _ _ .__ _ -. -.. J_.L---------

0

lITCH

IGNATURE

HRUST

IGNATURE

TL Vx
TEST IDENTIFICATION: VALVE #30

STORAGE LOCATION : 02-05

PLOT NO. 3

MOTOR CURRENT SITCHES: OPEN TO CLOSE

STROKE TIME : 43.14 SECONDS PEAK INRUSH

AVE. RUN CURRENT

MAX. RUN CURRENT

SEATING CURRENT

: 16.89

: 5.51 a 5.51

: 5.54

AMPERES

AMPERES

AMPERES

AMPERES

Vy 

V/D 1. aOO.-i

Vy 0. u-8

T/O 1. 000a1

TL -8. 190l1

V/D 5.000a-I

Vy 0 -7

T/D 1. OO0ol I

TL -. 192l

-

| - !~~~~~~~~~

4J

WITCH

IGNATURE

OTOR CURRENT

IGNATURE

. . ._._._

TL Vx
TEST IDENTIFICATION: VALVE #30

STORAGE LOCATION : 02-04

PLOT NO. 4

MOTOR CURRENT & SWITCHES: CLOSE TO OPEN

STROKE TIME : 42.82 SECONDS PEAK INRUSH

AVE. RUN CURRENT

MAX. RUN CURRENT

END CURRENT

: 16.08

: 5.15

: 5.15

: 5.15

AMPERES

AMPERES

AMPERES

AMPERES

I -. I .- -* n

5 V/U1 1.LUUUQ-1

Vy 0.9-8

T/D 1.0009l

TL -8. 190.1

V/D 5.000e-i

Vy 0. s-7

T/D 1. 000.I

TL -8. 192.1

r'4

illililhhl

WITCH

IGNATURE

Vy F 'In

IhllIlill

. . . . . ._ -- '-' '-' ' ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~im

IOTOR CURRENT

;IGNATURE

J ___ _

TL Vx
273

TEST ID: VALVE 31

SYSTEM

SYSTEM

FLOW

TEMP

PRESS

SFTY REL'D:

0

AMBI ENT

ATMOSPHERIC

OPERATOR

TYPE : S"B

SIZE : 00

SERIAL NO. : 175499

ORDER NO. : 36820C

ORIENTATION: VERTICAL

ELECTRICAL VALVE

CONTROL CIR VOLTS: 120

AC/DC : AC

OPEN CONTROL : LIMIT

CLOSE CONTROL TOROUE

MICC:

SW. SENSING CIR. : CURRENT

TORQUE SWITCH

OPEN T.S. SETTING : 2.0/2.0

CLOSE T.S. SETTING: 1.5/1.5

LIMITER PLATE : NONE

TS BALANCEABLE : NO

ID. NO. : 2-FCV-1-17

TYPE : GATE

SIZE : 4"

BODY ORIENTATION: HORIZONTAL

INITIAL POSITION:

FINAL POSITION :

MOTOR

VOLTS : 460 AC

RATED AMPS. 2.6

SPEED : 1750

HORSEPOWER: 1.0

TEST EQUIPMENT

# : SIMPSON(20)

LOAD CELL

AMP PROBE
274

Test I.D. Valve #31

Code Comments

1 The close-to-open bypass switch requires

adjustment to properly cover the

unseating of the valve. (See

Recommendation 1).

1 The thrust and switch signatures

indicate that the valve is backseating.

(See Recommendation 2).

4 During equipment installation, oil was

noted in the spring pack cavity. (See

Recommendation 3).

Recommendations

1. The close-to-open bypass switch should be reset to actuate after valve

unseating to preclude an inadvertent torque switch trip.

2. The inertia developed within the actuator is causing the valve to

coast into the backseat after the open control circuit has been

broken. The open limit switch should be set to actuate earlier in the

close-to-open stroke to compensate for the inertia factor.

3. Consideration should be given to sampling the grease in this operator

and performing a chemical analysis to determine if it has degraded to

a point where the lubricating quality has been reduced.
275

TEST ID: VALVE #31 BYt RLB DATEs 06-16-85

THRUST SIGNATURE ANALYSIS

STROKE TIME

BYPASS TIME

THRUST AT CST

SEAT THRUST AT C'

AVE RUN THRUST

MAX RUN THRUST

INERTIAL THRUST

TOTAL THRUST

TORQUE SW. SETTII

TS-OC-01-11

: 13.63 SECONDS

: 0.85 SECONDS

: 0.785 V

ST. 0.785 V

: PRELOAD

.CPRELOAD

: 29 %

a 1.02 V

'6: 1.5/1.5

TS-CO-01-12

STROKE TIME a 13.53 SECONDS

BYPASS TIME 1.14 SECONDS

PROTECTION MARGIN :-0.22 SECONDS

UNSEATING TIME : 1.36 SECONDS

AVE RUN THRUST :(PRELOAD

MAX RUN THRUST :(PRELOAD

UNSEATING THRUST :CPRELOAD

THRUST AT CST : N/A

TORQUE SW. SETTING: 2.0/2.0

SPRING PACK CALIBRATION SIGNATURE ANALYSIS

NO SPRING PACK CALIBRATION SIGNATURE ACQUIRED

MOTOR CURRENT SIGNATURE ANALYSIS

CS-OC-01-13

STROKE TIME : 13.64

PEAK INRUSH : 5.72

AVE. RUN CURRENT a 2.41

MAX. RUN CURRENT a 2.41

SEATING CURRENT : 2.63

SECONDS

AMPERES

AMPERES

AMPERES

AMPERES

CS-CO-01-14

STROKE TIME

PEAK INRUSH

AVE. RUN CURRENT

MAX. RUN CURRENT

END CURRENT

: 13.53 SECONDS

a 5.61 AMPERES

: 2.31 AMPERES

: 2.31 AMPERES

: 2.31 AMPERES
PLOT NO. 1

STROKE TIME

BYPASS TIME

TORQUE SW. SETTING:

TEST IENTIFICATION: ALVE 31

STORAGE LOCATION : 01-11

TMD SWITCHES: OPEN TO CLOSE

13.63 SECONDS AVE RUN THRUST (PRELOAD

MAX RUN THRUST :<PRELOAD

0.85 SECONDS THRUST AT CST : 0.785 V

SEAT THRUST AT CST: 0.785 V

INERTIAL THRUST 29 %

1.5/1.5 TOTAL THRUST 1.02 V

WITCH

IGNATURE

Vy f

K ~~~~~~~~~~~~~~~~~~~~~V/O Vy 0. 1.OCOcO- s-B

T/D 5. 000O

TL -4.095e1

V/D 2.500a0

Vy 0.s-5

T/D 5. 000o0

................... TL -4. 098a l

--- - ----------- -- I

'HRUST

IGNATURE

TL Vx
TEST IDENTIFICATION: VALVE #31

STORAGE LOCATION : 01-12

PLOT NO. 2

TMD & SWITCHES: CLOSE TO OPEN

STROKE TIME

BYPASS TIME

UNSEATING TIME

PROTECTION MARGIN

: 13.53 SECONDS

: 1.14

: 1.36

:-0.22

AVE RUN THRUST : (PRELOAD

MAX RUN THRUST u (PRELOAD

UNSEATING THRUST :(PRELOAD

THRUST AT CST : N/A

TORQUE SW. SETTING: 2.0/2.0

SECONDS

SECONDS

t ~ ~ *~ ~ ~ ~ L. 1t - --- .

v/u i.UUUQ-i

Vy 0. -

T/D 5. 0OOa0

ITL -4.095.1 N~ i4 -h

V

V

u T

/0 2. 5000

y . e0-B

/0 5.0000D

wrcH L -4. 095.l

IGNATaRE

HRNST

IGRATOIE

4 nlnnmlr;lrr.,rnrnmp .,.. 1 T

I Vy F

-L

------- - .- _

TL 

Vx

TL Vx
TEST IDENTIFICATION: VALVE 31

STORAGE LOCATION : 01-13

PLOT NO. 3

MOTOR CURRENT SWITCHES: OPEN TO CLOSE

STROKE TIME : 13.64 SECONDS PEAK INRUSH

AVE. RUN CURRENT

MAX. RUN CURRENT

SEATING CURRENT

: 5.72

: 2.41

: 2.41

: 2.63

AMPERES

AMPERES

AMPERES

AMPERES

JITCH

GNATURE V

flOR CURUNT

GNATURE

y 

V/D 1.000.-1

_ _ ~~~~~~~~~~~~~~~~~~~~Vy 0. -8

T/D 5.000a0

TL -4.095.1

/D 5.000.-i

_ l~~~~~~~~~~~~~~~~~~~~~Vy O.Qe-7

T/D 5.000.0

mill I I . ..... I TL -4.098.1

-F ~~~~~~T----------------- 

~~ L. ,- ,L J - , j -

. _ ,Vx _ . . . _ 

03

IL Vx
TEST IDEN7IFICATION: VALVE #31

STORAGE LOCATION : 01-14

PLOT NO. 4

MOTOR CURRENT SWITCHESi CLOSE TO OPEN

STROKE TIME : 13.53 SECONDS PEAK INRUSH

AVE. RUN CURRENT

MAX. RUN CURRENT

END CURRENT

i 5.61 AMPERES

: 2.31 AMPERES

X 2.31 AMPERES

: 2.31 AMPERES

V/D 1.000a-1

Vy 0.o-8

T/D 5.000.0

TL -4.095a1

%0 V

V

/0D 5.OOO-1

/y 0. -7

/D 5. 00oO0

L -4. O98al

'll

WrTCH

IGNATURE TI

Vy F

_ . . . . _ _ _ _ TOR CURRENT

IGNATURE

------ 4-.- - -.-- -

TL
280

TEST ID: VALVE 32

SYSTEM

SYSTEM : N/A

FLOW : 

TEMP : AMBIENT

PRESS : ATMOSPHERIC

s1TY REL'D: N/A

OPERATOR

TYPE : SMB

SIZE : 

SERIAL NO. : 216593

ORDER NO. : 32435A

ORI ENTAT ION: VERTICAL

ELECTR ICAL VALVE

rujrPLiL ilR tJOLTS: 12'

i . Cy : trC

OrEN C01ITROL : LIMIT

CLOSE CONTROL : TORQUE

titC tl/A

Sl. SENSING CIR. : CURRENT

ID. NO.

TYPE

SIZE :

BODY OR I ENTAT I ON:

INITIAL POSITION:

FINAL POSI fIl :

2-FCV-6- 108

GATE

12

HORIZONTAL

N/A

N/A

TORQUE SITCH MOTOR

OPEN T.S. SETTING :

CLOSE T.S. SETTING:

LIMITER PLATE I

TS BALANCEABLE I

1 ,5/1 .5

1.75/1.75

4.5

YES

VOLTS , 230/460 AC

RATED AMPS: 9.46

SPEED 3 1735

HORSEPOWERs 65

TEST EQUIPMENT

LOAD CELL N s

AMP PROBE N I

MAINFRAME N s

TMD 

N/A--N/A

SIMPSON( 20) N/A

N/A

N/A
281

Test I. D. Valve 32

Code Comments

1,4 The close-to-open bypass switch required

adjustment to properly cover the

unseating of the valve.

4 During equipment installation, it was

noted that there was separated grease in

the spring cartridge cap. (See

Recommendation #1).

4 During equipment installation, standing

water was noted inside the limit switch

compartment. (See Recommendation 2).

4 The motor current signatures indicate a 50 RPM cyclic loading condition. (See

Recommendation 3).

Recommendations

1. Consideration should be given to sampling the grease in this operator

and performing a chemical analysis to determine if it has degraded to

a point where the lubricating quality has been reduced.

2. The cause of this condition should be investigated and, if possible,

alleviated.

3. The magnitude of this condition does not, in our opinion, jeopardize

the operability of the valve at this time.
182

TEST ID: VALVE #19

SYSTEM

SYSTEM

FLOW

TEMP

PRESS

SFTY REL'D:

0

AMBIENT

ATMOSPHERIC

OPERATOR

TYPE : SMB

SIZE : 0

SERIAL NO. : 95086A

ORDER NO. : 336542C

ORIENTATION: VERTICAL

ELECTRICAL VALVE

CONTROL CIR VOLTS: 120

AC/DC : AC

OPEN CONTROL : LIMIT

CLOSE CONTROL : TORQUE

MCC

SN. ENSING CIR. : VOLTAGE

ID. NO. :

TYPE

SIZE

BODY ORIENTATION:

INITIAL POSITION:

FINAL POSITION :

COV- 108

GATE

12"

HORIZONTAL

TORQUE SITCH MOTOR

OPEN T.S. SETTING :

CLOSE T.S. SETTING:

LIMITER PLATE

TS B&ILANCEABLE

1.0/1.0

1.5/1.5

2.5

YES

VOLTS

RATED AMPS:

SPEED

HORSEPOWER:

460 AC

4.6

1700

7.5

LOAD CELL

AMP PROBE

MAINFRAME

TMD #

TEST EQUIPMENT

# 50 K--

# : FLUKE(20)

:
TEST IDENTIFICATION: VALVE #2

STORAGE LOCATION : 01-16

PLOT NO. I

TMD & SWITCHES: OPEN TO CLOSE

STROKE TIME

BYPASS TIME

: 62.42 SECONDS

: 0.68 SECONDS

AVE RUN THRUST

MAX RUN THRUST

THRUST AT CST

SEAT THRUST AT

INERTIAL THRUSI

TOTAL THRUST

.<PRELOAD

. PRELOAD

: 1.48 V

CST: 1.48 V

* 17 *

TORQUE SW. SETTING: 1.75/1.75 : 1.74 V

- -- __- r--r---- -r

.. n_ " - . UUQ-.

IVy 0.e-8

IT/D 1.00al

iTL -8. 192.1

I

bil .. I1. co

w __~I nlo"mmnwmN- w IIII 1l'l'lrj IIJI................ V

T

T

/D 2. 5000e

y 0.0-5

/D 1. 000.1

L -8.194.l

Vy F *0_

i L..4

F

I

L-- - . . . - .- -

TL Vx
PLOT NO. 2

STROKE TIME

BYPASS TIME

UNSEATING TIME

PROTECTION MARGIN

TEST IDENTIFICATION: VAL'Y'E 32

STORAGE LOCATION : 01-15

TMD & SWITCHES: CLOSE TO OPEN

: 61.9 SECONDS AVE RUN THRUST : PRELOAD

MAX RUN THRUST : PRELOAD : 7.02 UNSEATING THRUST : 0.52 V

: 2.68 SECONDS THRUST AT CST : N/A

: 4.34 SECONDS TORQUE SW. SETTING: 1.5/1.5

IV/D 1. 000- IVy 0. a-B

T/D 1. 000.1

ITL -8. 1921 A11l 1 4

-10fill,

Vy

V/0 2.500.s

Vy 0. Q-6

T/D 1. 000Q1

ITL -. 194.1

- - ....

I .

L - - .- - . S . _ -

TL Vx

+ 

. .
TEST IDENTIFICATION: VALVE #32

STORAGE LOCATION : 01-18

PLOT NO. 3

MOTOR CURRENT SWITCHES: OPEN TO CLOSE

STROKE TIME : 62.44 SECONDS PEAK INRUSH

AVE. RUN CURRENT

MAX. RUN CURRENT

SEATING CURRENT

: 21.8

5.61

: 5.66

: 6.9

AMPERES

AMPERES

AMPERES

AMPERES

- -- -- -r -- - ----- -

P. IV/D 1. OOO-1

.4vy O.Q-a

vyLFF

F

IT/D 1. 0001

TL -8. 254.l l4 co

U,

in WWUWflW3SUS

I/D 5.000e-I

Vy 0. -7

T/D 1. 000.l

TL -8. 256e1 HITfll fify I l II [II II III [II III II (III Ifllll - III [II II III IIlyl lill II III II If III ll III III lllll [IliIII III IIIII [IIIlIIIl Ji III stillIII I lli

7 --'- 1

1 1

-i - I~~~~

-I

.I

_.. . . . . . . . . .

L j l

L _ .. - ...- . ..-... -- I- __- _ ._ _

i

III ---j

TL Vx
TEST IDENTIFICATION: VALVE #32

STORAGE LOCATION : 01-17

PLOT NO. 4

MOTOR CURRENT & SWITCHES: CLOSE TO OPEN

STROKE TIME : 61.88 SECONDS PEAK INRUSH

AVE. RUN CURRENT

MAX. RUN CURRENT

END CURRENT

: 23.19 AMPERES

: 5.56 AMPERES

: 5.56 AMPERES

: 5.56 AMPERES

Iv

,1111111181111111, Av'o 1.0 OG-1

'y 0. s-8

Y/ 1.000.!

'L -8. 192.1

1

II F'~*iI

1111111111111

VyF

-

1

T T S.0002-1

jVy 0..-7

T/D 1. 000.1

ITL -8.194.1

'1

CO%

6-- , . - . . . . . - - - 1 _ 

_

--- - ~ -- - -J- .- -- - ---

TL Vx
287

TEST ID: VALVE #33

SYSTEM

SYSTEM : N/A

FL'I : 0

TEMP : AMBIENT

PRESS : ATMOSPHERIC

SFTY REL'D: N/A

OPERATOR

TYPE : SMB

SIZE I

SERIAL NO. a 149029

ORDER NO. : 359503E

ORIENTATION: 

ELECTRICAL VALVE

CONTROL CIR VOLTS:

AC/DC

OPEN CONTROL

CLOSE CONTROL a

M1CC

SN. SENSING CIR. :

120

AC

LIMIT

TORQUE

N/A

CURRENT

ID. NO.

TYPE

SIZE

BODY ORIENTATI ON:

INITIAL POSITION:

FINAL POSITION 

2-FCV-2-94

GATE

12"

HORIZONTAL

N/A

N/A

TORQUE SWITCH MOTOR

OPEN T.S. SETTING 2.0/2.0

CLOSE T.S. SETTING: 2.0/2.0

LIMITER PLATE a 4.5

TS BALANCEABLE : YES

VOLTS : 460

RATED AMPS: 6

SPEED : 1720

HORSEPOWER: 1.0

AC

TEST EQUIPMENT

LOAD CELL

AMP PROBE

MAINFRAME

TMD #

# : N/A--

# : SIMPSON(20) N/A

N : N/A

: N/A
288

Test I.D. Valve #33

Code Comments

1,4 The close-to-open bypass switch required

adjustment to properly cover the

unseating of the valve.

3 The thrust signatures reveal unusual

seating and unseating conditions. (See

Recommendation #1).

3 During equipment installation, it was noted that the spring cartridge cap had

apparently been packed with grease.

(See Recommendation 2).

4 The motor is running approximately 16%

above its rated amperage in the closed

direction. (See Recommendation #1).

4 The valve was noted to be leaking from

the packing gland.

Recommendations

1. This condition does not, in our opinion, jeopardize the operability of

the valve at this time, however, the condition should be monitored

during the next testing period.

2. It should be noted that the Belleville springs do not require

lubrication to function properly.
289

TEST ID: VALVE #33 BY: RLB DATE: 06-16-85

THRUST SIGNATURE ANALYSIS

STROKE TIME

BYPASS TIME

THRUST AT CST

SEAT THRUST AT CS

AVE RUN THRUST

MAX RUN THRUST

INERTIAL THRUST

TOTAL THRUST

TORQUE SW. SETTI

TS-OC-01-06

* 70.82 SECONDS

: 0.48 SECONDS

*: 1.555 V

;Ti 1.555 V

I 0FPRELOALi

: PRELOAD

: 19 .

X 1.86 V

JG: 2.0/2.0

TS-CO-01-07

STROKE TIME

BYPASS TIME

PROTECTION MARGIN :

UNSEATING TIME

AVE RUN THRUST

MAX RUN THRUST

UNSEATING THRUST :

THRUST AT CST

TORQUE SW. SETTING:

70.32 SECONDS

10.36 SECONDS

4.98 SECONDS

5.38 SECONDS

CPRELOAD

CPRELOAD

0.805 V

N/A

2.0/2.0

SPRING PACK CALIBRATION SIGNATURE ANALYSIS

NO SPRING PACK CALIBRATION SIGNATURE ACQUIRED

MOTOR CURRENT SIGNATURE ANALYSIS

CS-OC-01-09

STROKE TIME : 70.86

PEAK INRUSH : 12.92

AVE. RUN CURRENT : 7.12

MAX. RUN CURRENT : 7.12

SEATING CURRENT : .22

SECONDS

AMPERES

AMPERES

AMPERES

AMPERES

CS-CO-01-08

STROKE TIME

PEAK INRUSH

AVE. RUN CURRENT

MAX. RUN CURRENT

END CURRENT

: 70.38

: 11.76

: 6.36

: 6.36

:6.22

SECONDS

AMPERES

AMPERES

AMPERES

AMPERES
TEST IENTIFICATION: VALVE #33

STORAGE LOCTzON : 01-06

PLOT NO. I

TMD SWITCHES: OPEN TO CLOSE

STROKE TIME . ,0.82 SECONDS AVE RUN THRUST <PRELOAD

MAX RUN THRUST :PRELOAD

BYPASS TIME : 0.48 SECONDS THRUST AT CST : 1.555 V

SEAT THRUST AT CST: 1.555 V

INERTIAL THRUST : 19 . TORQUE S. SETTING: 2.0/2.0 TOTAL THRUST : 1.86 V

i |~~~~~~~~~~~~~ 1.000D.-i ~~~~~~V/D 

vy 0.0-8

lT/O 1.00001 !

;TL -8. 1920: to

! :V/D 2. 500.O

SWITCH T/ 1 000l

Lyi j tTL -8.194,1 j

THRUST L 1

SIGNATURE

TL V1

TL Vx
TEST IDENTIFICATION: VALVE 33

STORAGE LOCATION : 01-07

PLOT NO. 2

ThD SWITCHES: CLOSE TO OPEN

STROKE TIME

BYPASS TIME

UNSEATING TIME

PROTECTION MARGIN

* 70.32 SECONDS

* 10.36

* 5.38 SECONDS

* 4.98 SECONDS

AVE RUN THRUST

MAX RUN THRUST

UNSEATING THRUST

THRUST AT CST

TORQUE SW. SETTING:

<PRELOAD

<PRELOAD

0.805 V

N/A

2.0/2.0

I V/D 1.000.-I

Vy 0. 0-8

T/0 1. 0DO I

TL -8. 192a1 %D

I I mumumV/D 2.50000

Vy 0. a-8

T/D 1. 000.1

TL -8.194.1

SWITCH

SIGNATURE julIA JJJJjJjflflJJJjJ Vy F

THRUST

SIGNATURE

h 4 I I-i 

- .±. .. .. .. .- - - S

TL 

Vx

TL Vx
TEST IDENTIFICATIO4: VALVE #33

STORAGE LOCATION : 01-09

PLOT NO. 

MOTOR CURRENT SWITCHES: OPEN TO CLOSE

STROKE TIME : 70.86 SECONDS PEAK INRUSH

AVE. RUN CURRENT

MAX. RUN CURRENT

SEATING CURRENT

:12.92

:7.12

:7.12

:8.22

AMPERES

AMPERES

AMPERES

AMPERES

_ _ _ _ _ , ~I- 1 ' ' 

iV/D 1. 0000-1

Vy 0. 0-6

T/D 1. 000.I

TL -8. 192. 1

V) I1.3

SWITCH

SIGNATURE

III I ll IlilItWW Vy

/D 1. 000.2

y 0. a-7

ID 1. 000.1

L -8. 194.1

I Ti

TL

VyW

I L _ ,, . . * -' 1~~~~~~~~~~~~~~~~~

CURRENT

SIGNATURE - r- II- - -a--.- - - .~--. - -~ ~ ~ ~. -- t

L - - .- - -_ .... .. , . .. . . ..... I - -_ ......... ...

TL
TEST IDENTIFICATION: ALVE #33

STORAGE LOCATION : 01-08

PLOT NO. 4

MOTOR CURRENT SWITCHES: CLOSE TO OPEN

STROKE TIME : 70.38 SECONDS PEAK INRUSH

AVE. RUN CURRENT

MAX. RUN CURRENT

END CUPRENT

: 11.76 AMPERES

: 6.36 AMPERES

: 6.36 AMPERES

: 6.22 AMPERES

V/D 1. OOO-1

Vy 0. a-9

T/D 1. 000o1

!TL -8. 192a1 I.

SWITCH

SIGNATURE L

vy I

111111l1111111111111111111 1 .

- -~~~~~~~~~~~~~~~~~ ~~~vy

0D 1. 0009O

I . -7

%o w0

, .

-1

1T/D 1. 000a1

jTL -8.194e1

CURRENT LSIGNATURE

TL

.4 -

.1 -. . . . . . .

. . . - - -

Vx
294

Test I.D. Valve 34

Code Comments

3 During equipment installation, it was noted that the declutch pin on the

original unit's spring cartridge cap was found to be sheared completely off.

(See Recommendation #1).

4 During equipment installation, it was noted that four (4) upper bearing

housing bolts were loose.

4 During equipment installation, it was noted that there was water in the spring

cartridge cap. (See Recommendation #2).

4 The thrust signatures revealed an approximate gap of .032" in the spring

pack assembly.

Recommendations

1. The declutch pin should be replaced and the spring on the declutch

shaft restored at the next opportunity.

2. The cause for this condition should be determined and if possible, alleviated.
295

TEST ID: VALVE 34

SYSTEM

SYSTEM : N/A

FLOW : 

TEMP : AMBI ENT

PRESS : ATMOSPHERIC

SFTY REL'D: N/A

OPERATOR

TYPE : SMB

SIZE : 4

SERIAL NO. : 147582

ORDER NO. : 358972G

ORIENTATION: VERTICAL

ELECTRICAL VALVE

CONTROL CIR VOLTS:

AC/DC I

OPEN CONTROL

CLOSE CONTROL

MCC :

SW. SENSING CIR. :

120

AC

LIMIT

TORQUE

N/A

CURRENT

ID. NO.

TYPE

SIZE :

BODY ORIENTATION:

INITIAL POSITION:

FINAL POSITION 

003-67

GATE

24"

HORIZONTAL

N/A

N/A

TORQUE SWITCH MOTOR

OPEN T.S. SETTING :

CLOSE T.S. SETTING.

LIMITER PLATE I

TS BALANCEABLE I

1.25/1.25

1.25/1.25

4.0

YES

VOLTS : 230/460 AC

RATED AMPS 52

SPEED : 1730

HORSEPOWER: 250ft/lb-50ft/lb

LOAD CELL

AMP PROBE

MAINFRAME

TMD t

TEST EQUIPMENT

# : 200K--N/A

I : SIMP(200) N/A

N : N/A

: N/A
296

TEST ID: VALVE #34 BY: RLB DATE: 06-17-85

THRUST SIGNATURE ANALYSIS

STROKE TIME

s PUS TTlHE

THRUST AT CST

SEAT THRUST AT C1

AVE RUN THRUST

MAX RUN THRUST

INERTI-L THRUST

TOTAL THRUST

TORQUE S. SETTI!

TS-OC-02-12

: 106.5 SECONDS

: -1 ..- erlDS

: 36122 #

ST: 36122 #

: (PRELOAD

: (PRELOAD

69 6 .

: 52164 #

46: 1.25/1.25

TS-CO-02-13

STROKE TIME

BYPASS TIME

PROTECTION MARGIN :

UNSEATING TIME

AVE RUN THRUST

MAX RUN THRUST

UNSEATING THRUST :

THRUST AT CST X

TORQUE SW. SETTING:

103.6 SECONDS

4 SECONDS

1.6 SECONDS

2.4 SECONDS

<PRELOAD

CPRELOAD

25785 #

N/h

1.25/1.25

SPRING PACK CALIBRATION SICNATURE ANALYSIS

TL-CAL-02-11 K-FACTOR: 35650#/V PRELOAD: 10200 #

MOTOR CURRENT SIGNATURE ANALYSIS

CS-OC-02-14

STROKE TIME : 106.45

PEAK INRUSH : 72.42

AVE. RUN CURRENT : 18.68

MAX. RUN CURRENT : 18.74

SEATING CURRENT : 20.04

SECONDS

AMPERES

AMPERES

AMPERES

AMPERES

CS-CO-02-15

STROKE TIME

PEAK INRUSH

AVE. RUN CURRENT

MAX. RUN CURRENT

END CURRENT

: 103.7 SECONDS

: 72.44 AMPERES

: 18.92 AMPERES

: 18.92 AMPERES

: 18.92 AMPERES
TEST IDENTIFICATION: VALVJE 34

STORAGE LOCATION : 02-12

PLOT NO. I

TMD SWITCHES: OPEN TO CLOSE

STROKE TIME

BYPASS TIME

: 106.5 SECONDS

: 3 SECONDS

AVE RUN THRUST

MAX RUN THRUST

THRUST AT CST I

SEAT THRUST AT CST:

INERTIAL THRUST

TOTAL THRUST

3000 #

3380 #

7303 

2695 #

9 

TORQUE SW. SETTING:1.25/1.25 7974 #

rev--l Iam-Ir-- ---- I---- . --1- .-

i

SV/D 2.500.-1 4Vy 0. -7

IT/D 2.500a1

ITL -2. 0480.2

V/D 2. 500a0

Vy 0. -8

1T/D 2. 500.1

TL -2.0485e2

t0

-J

SWITCH

SIGNATURE

THRUST

SIGNATURE

vy 

L

F 1

L I _

TL Vx
TEST IDENTIFICATION: ALVE #34

STORAGE LOCATION : 02-13

PLOT NO. 2

TMD & SWITCHES: CLOSE TO OPEN

STROKE TIME

BYPASS TIME

UNSEATING TIME

PROTECTION MAPOIN

: 103.6 SECONDS

: 4 SECONDS

: 2.4 SECONDS

: 1.6 SECONDS

AVE RUN THRUST : (PRELOAD

MAX RUN THRUST : (PRELOAD

UNSEATING THRUST : 25785 #

THRUST AT CST : N/A

TORQUE SW. SETTING: 1.25/1.25

_r ---- r - - .. .... _ _. . _ _ , ... , - _ 

V

L 1 ~~~~~~~~~~~~~~~~

I-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~T

.; X~~~~~~~~~~~~~~~~~~~~~v

; H ~~~~~~~~~~~~~~~~~~~~~~~~~

SWITCH IT

SIGNATURE vy

L 

THRUST

SIGNATURE 1

L~~ _ .. _ .~~~ .. .* _ - .. . _ --- _ a - .~ J . L - . . _

/0 2.500.-i

ty 0. -7

/D 2. 500.1

L -2. 0480.2

/D 2. 500.0

ly 0. -6

0

rL-2. 5005

-2. 04B5e2

TL Vx
- - I} - .

TEST IDENTIFICATION: VALVE #34

STORAGE LOCATION : 02-14

PLOT NO. 3

MOTOR CURRENT SWITCHES: OPEN TO CLOSE

STROKE TIME : 106.45 SECONDS PEAK INRUSH : 72.42 AMPERES

AVE. RUN CURRENT t 18.68 AMPERES

MAX. RUN CURRENT : 18.74 AMPERES

SEATING CURRENT : 20.04 AMPERES

IV/D 2. 500DVy 0..-7

iT/0 2. 501 

TL -2. 0480a2

;V/D 1. 000. 0

V IVy .D..-7 -

SWITCH iT/D Z.5SOQ

SIGNATURE V TL -2. 0485e2

MOTOR CURRENTLr 

SIGNATURE L

iL 

IV1

TL Vx
TEST IDENII PICATION : VALVE 34

STORAGE LOCATION : 02-15

PLOT NO. 4

STROKE TIME

MOTOR CURRENT & SWITCHES: CLOSE TO OPEN

103.7 SECONDS PEAK INRUSH

AVE. RUN CURRENT

MAX. RUN CURRENT

END CURRENT

72.44 AMPERES

: 18.92 AMPERES

18.92 AMPERES

: 18.92 AMPERES

r-- ---- -'r--- - --- rV I

! I

IV/O 2. 5SO-l

1Vy 0. Q-7

jT/0 2.500QI

|TL -2. 0480a2_

0

w

V/D 1. GOOQO 0

IVY . Q-7

T/D 2. 500o1

TL -2. 0485s2

SWITCH

SIGNATURE

MOTOR CURRENT

SIGNATURE

y

A

F _ _ ' 1

TL V
TEST IDENTIFICATIOt: VALVE #34

STORAGE LOCATION : 02-11

PLOT NO. 5

TMD LOAD CELL

PRELOAD: 10200 #

K<-FACTOR: 35,' o */'

r

F

LOAD CELL ! 

SIGNATURE ;

SIGNAURE

TL _Vx . .. 

V/D 1. 000.0

Vy 0. e-7

T/D 5. 000a-1

TL -4. 0980

V/D . 500.0

Vy 0. -5

T/D 5. 000.-l

TL -4.097eO

w

0

I 

.....

_.~~~ - .- -_ -. -

l

.

-

TL Vx
302

Test I.D. Valve 35

Code Comments

1 - The valve tripped during the initial

close-to-open stroke because the torque

switch actuated without bypass

protection when the disc was being

lifted from the seat.

1,4 The close-to-open bypass switch required

adjustment to properly cover the

unseating of the valve.

4 The close-to-open thrust signature

indicates a minor loading condition

occurring just after valve unseating.

(See Recommendation #1).

4 The thrust signatures reveal an apparent

gap of approximately .050" in the spring

pack assembly.

Recommendations

1. Since this characteristic does not occur in the open-to-close thrust

signature, this condition does not, in our opinion, jeopardize the

operability of the valve at this time. The condition should be

monitored, however, during future MOVATS testing.
303

TEST ID: VALVE 35

SYSTEM

SYSTEM : N/A

FLOW : 0

TEMP : AMBIENT

PRESS : ATMOSPHERIC

SFTY REL'D: N/A

ELECTRICAL

OPERATOR

TYPE a SMB

SIZE 0

SERIAL NO. : 144043

ORDER NO. : 358972K

ORIENTATION:

VALVE

CONTROL CIR VOLTS: 120

AC/DC : AC

OPEN CONTROL : LIMIT

CLOSE CONTROL : TORQUE

MCC

SW. SENSING CIR. a CURRENT

ID. NO.

TYPE

SIZE I

BODY ORIENTATION:

INITIAL POSITION:

FINAL POSITION :

2-FCV-5-40

GATE

16M

HORIZONTAL

N/A

N/A

TORQUE SWITCH MOTOR

OPEN T.S. SETTING 

CLOSE T.S. SETTING:

LIMITER PLATE a

TS BALANCEABLE I

2.0/2.0

2.75/2.75

5.0

YES

VOLTS a 460 AC

RATED AMPSa 7

SPEED s 1750

HORSEPOWERt 2.6

TEST EQUIPMENT

LOAD CELL N 

AMP PROBE 

MAINFRAME 

TMD # I

N/A--

SIMPSON(20) N/A
304

TEST ID: VALVE #35 BY: RLB DATE' 06-16-85

THRUST SIGNATURE ANALYSIS

STROKE TIME

BYPASS TIME

THRUST AT CST

SEAT THRUST AT CE

AVE RUN THRUST

MAX RUN THRUST

INERTIAL THRUST

TOTAL THRUST

TORQUE SW. SETTIt

TS-OC-01-02

: 76.52 SECONDS

: 0.92 SECONDS

: 2.905 V

ST: 2.33 V

: 0.545 V

: 0.595 V

: 9 %

: 3.185 V

4G. 2.75/2.75

TS-CO-01-03

STROKE TIME I

BYPASS TIME I

PROTECTION MARGIN :

UNSEATING TIME

AVE RUN THRUST

MAX RUN THRUST

UNSEATING THRUST :

THRUST AT CST

TORQUE SW. SETTING:

75.8 SECONDS

5.6 SECONDS

2.54 SECONDS

3.06 SECONDS

0.215 V

0.265 V

0.66 V

N/A

2.0/2.0

SPRING PACK CALIBRATION SIGNATURE ANALYSIS

NO SPRING PACK CALIBRATION SIGNATURE ACQUIRED

MOTOR CURRENT SIGNATURE ANALYSIS

CS-OC-01-04

STROKE TIME I 76.6

PEAK INRUSH X 1.37

AVE. RUN CURRENT : 0.58

MAX. RUN CURRENT | 0.58

SEATING CURRENT a 0.63

SECONDS

AMPERES

AMPERES

AMPERES

AMPERES

CS-CO-O 1-05

STROKE TIME

PEAK INRUSH

AVE. RUN CURRENT

MAX. RUN CURRENT

END CURRENT

: 75.76 SECONDS

a 1.36 AMPERES

X 0.59 AMPERES

a 0.59 AMPERES

i 0.59 AMPERES
TEST IDENTIFICATION: VALVE #35

STORAGE LOCATION : 01-02

PLOT NO. I

TMD SWITCHES: OPEN TO CLOSE

STROKE TIME : 76.52 SECONDS AVE RUN THRUST : 0.545 V

MAX RUN THRUST a 0.595 V

BYPASS TIME : 0.92 SECONDS THRUST AT CST a 2.905 V

SEAT THRUST AT CST: 2.33 V

INERTIAL THRUST a9 V

TORQUE SW. SETTING: 2.75/2.75 TOTAL THRUST a 3.185 V

i

ISWITCH i

SIGNATURE L

Vy 

THRUST s

SIGNATURE

iIV/D 8. 000.3

IVy 0. O

iT/ 1.000a

:TL -8.198ol w

04fln

V/D 2 5000

1D 1. 000OI

1TL -8.200.1

-- L _ l _ _ . . . . . _ . ....... I

q .I 

.....

J... 

TLF'tx

i i~~~~~. 

TL 'Ix
TEST IENTIFICATION: VALVE #35

STORAGE LOCATION : 01-03

PLOT NO. 2

TMD SWITCHES: CLOSE TO OPEN

STROKE TIME : 75.8 SECONDS AVE RUN THRUST : 0.215 V

MAX RUN THRUST : 0.265 V

BYPASS TIME : 5.6 UNSEATING THRUST : 0.66 V

UNSEATING TIME : 3.06 SECONDS THRUST AT CST : N/A

PROTECTION MARGIN : 2.54 SECONDS TORQUE SW. SETTING: 2.0/2.0

V/D 8. 000.3 1

V I~~~~~~~~~~~~~~Vy 0.90

T/D 1. 000.1

F TL -8. 328.1 0

!V/D 2. 50000

SIGNATURE h .09

i ~~~~~~~~~~~~~~~~~~~~~~~T/D 1. DSS01 I

V h ............. y * jT L - 8 . 3 3 0 1

q'~ ... [.-. n..trq_. ._ . .I 

THRUST - SIGNATURE 

L _- >. - . . . _ _ . - _ .L . _

TL 'Zx
TEST IDENTIFICATION: VALVE #35

STORAGE LOCATION : 01-04

PLOT NO. 3

MOTOR CURRENT SWITCHES: OPEN TO CLOSE

STROKE TIME : 76.6 SECONDS PEAK INRUSH

AVE. RUN CURRENT

MAX. RUN CURRENT

SEATING CURRENT

: 1.37

0.58

: 0.58

: 0.63

AMPERES

AMPERES

AMPERES

AMPERES

-l--- r

IV/D 8. 000e3

IVy 0.00

1T/D 1.OO0al

TL -. 202e1

SWITCH

SIGNATURE

Vy

MOTOR CRRENT

SIGNATURE

-~ ~~~~~~ilI1 n11 .A,1

I~ ~ ~ ~~_ ... ___,

-Iw

V/D 5. 0ooe-2

Vy 0. -8

T/D 1.0001

TL -. 204o1

.. . . . . _.-_ . .. .. .. _._

t~ ~~ - -I -. __.- F-i

-- - -- -----

i

____j

TL Vx
TEST IDENTIFICATION: ALVE #35

STORAGE LOCATION : 01-05

PLOT NO. 4

MOTOR CURRENT SWITCHES: CLOSE TO OPEN

STROKE TIME : 75.76 SECONDS PEAK INRUSH

AVE. RUN CURRENT

MAX. RUN CURRENT

END CURRENT

: 1.36 AMPERES

: 0.59 AMPERES

: 0.59 AMPERES

: 0.59 AMPERES

- -r- -lr --- - -__,

IlllllltIiii}t

†- *--------- - - . 000e

TD |YJ S. DoQS 

ivy O...O

T/D 1. 0001 

TL -. 282.1

V/D 5. 000w-2

ivy O. a-8

T/ 1. 000al 

ITL -. 204al

0

cD SWITCH

SIGNATURE Al u l mlmomw

i111111

vyh .

t= L...

Fl U I

L - -- -.--. -- - - .--- s-- - - - - -.--- - - -.-- - -

MOTOR CURRENT

SIGNATURE

TL
309

Test I.D. Valve #36

Code Comments

2 After review of the thrust signatures,

it was determined that there is a mechanical problem in the operator. At

this time we are unable to pinpoint the

specific problem or the magnitude of the

problem without disassembling the motor

operator. Signatures indicate the

following possibilities:

1) The worm gear is not moving freely

on the drive sleeve assembly.

2) The worm shaft bearing locknut may

be loose.

4 The thrust signatures revealed a definite gap in the spring pack

assembly, the severity of which is

indeterminable at this time due to the

fact that a spring pack calibration was not performed during this test.

Recommendations

1. During the next outage, we suggest that the operator be disassembled

to find the cause of the mechanical degradation.
310

TEST ID: VAVLE 36

SYSTEM

SYSTEM : N/A

FLOW : 

TEMP : AMBIENT

PPESS : ATMOSPHERIC

SFTY REL'D: N/A

OPERATOR

TYPE : SMB

SIZE : 

SERIAL NO. : N/A

ORDER NO. : N/A

ORIENTATION: VERTICAL

ELECTRICAL VALVE

CONTROL CIR VOLTS:

AC DC

OFEN CONTROL

CLOSE CONTROL :

MCC

Sl. SENSING CIR. :

125

11/A

LIMIT

LIMIT

N/A

VOLTAGE

ID. NO.

TYPE

SIZE

BODY ORIENTATION:

INITIAL POSITION:

FINAL POSITION :

2E4 1-FOII

GATE

10

HORIZONTAL

NA

N/A

TORQUE SWITCH MOTOR

OPEN T.S. SETTING 

CLOSE T.S. SETTING:

LIMITER PLATE

TS ALANCEABLE

3.5/3.5

3.5/3.5

5

YES

VOLTS : 240 DC

RATED AMPS: 12

SPEED : 1900

HORSEPOWER: 2.9

LOAD CELL

AMP PROBE

MAINFRAME

TMD #

TEST EQUIPMENT

N : 5K--N/A

: FLUKE(N/A> NA

# : NA

:NfA
311

TEST ID: VALVE 36 BYs RLB DATE: 06-17-85

THRUST SIGNATURE ANALYSIS

STROKE TIME

BYPASS TIME

THRUST AT CST

SEAT THRUST AT CS

AVE RUN THRUST

MAX RUIN THRUST

INERTIAL THRUST

TOTAL THRUST

TORnUE S. SETTIt'

TS-OC-0 1-02

: 29.9 SECONDS

* 0 SECONDS

: 3.945 V

;T: 2.56 V

: 1.37 V

: 1.385 V

: 2 

: 4.05 V

IG: 3.5/3.5

TS-CO-01-01

STROKE TIME

BYPASS TIME

PROTECTION MARGIN :

UNSEATING TIME

AVE RUN THRUST :

MAX RN THRUST

UNSEATING THRUST :

THRUST AT CST I

TORQUE S. SETTING:

29.91 SECONDS

N/A

N/A

1.96 SECONDS

0.17 V

0.175 V

2.36 V

N/A

3.5/3.5

SPRING PACK CALIBRATION SIGNATURE ANALYSIS

NO SPRING PACK CALIBRATION SIGNATURE ACQUIRED

MOTOR CURRENT SIGNATURE ANALYSIS

CS-OC-01-04

STROKE TIME : 30.06

PEAK IRUSH : 14.5

AVE. RUN CURRENT : 3.54

MAX. RUN CURRENT : 3.64

SEATING CURRENT : 15.5

SECONDS

AMPERES

AMPERES

AMPERES

AMPERES

CS-CO-01-03

STROKE TIME

PEAK INRUSH

AVE. RUN CURRENT

MAX. RUN CURRENT

END CURRENT

: 29.91

: 14.94

: 3.64

: 3.72

:3.52

SECONDS

AMPERES

AMPERES

AMPERES

AMPERES
TEST IDENTIFICATION-4: tVALVE #36

STOPAGE LO-ATION : 01-02

PLOT NO. 1

TMD & SWITCHES: OPEN TO CLOSE

STROKE TIME

BYPASS TIME

: 29.9 SECONDS

: 0 SECONDS

AVE RUN THRUST

MAX RUN THRUST

THRUST AT CST I

SEAT THRUST AT CST:

INERTIAL THRUST

TOTAL THRUST

1.37 

1.385 

3.945 V

2.56 V

2 %

TORQUE SW. SETTING: 3.5/3.5 4.05 V

-_ __ _ ,,-_ _ ,,- -_ ~ _ _ -,-, _- -,_ -r - -_ -- -r-............ - T . r--' ' - '---- 

V,0 5.000.-1

!L'y 0. .-7

1T/ 5. s000.0

jTL -4. 2451

,- 50.0_ 

SWITCH ' 'JD 2. 5e0

SIGNATURE :Vy 0. -6

T/f 5.000co

.,..t..iTL -4.245Q1

w~

H

vy !- - I - -

L

THRUST

SIGNATURE

-I

A, , , . _ . _ . . . . . . . _ . *2t '

L i._ II

III

II

L.

TL

. A - - I -- J-- . ------ IVx
TEST IDENTIFICATION: VALVE #36

STORAGE LOCATION : 01-01

PLOT NO. 2

TM & SWITCHES: CLOSE TO OPEN

STROKE TIME

BYPASS TIME

UNSEATING TIME

PROTECTION MARGIN

: 29.91 SECONDS

:N/A

1.96

:N/A

AVE RUN THRUST

MAX RUN THRUST

UNSEATING THRUST :

THRUST AT CST

TORQUE SW. SETTING:

0.17 V

0.175 V

2.36 V

N/A

3.5/3.5

SECONDS

SWITCH

SIGNATURE

THRUST

SIGNATURE

r - - - - r -- --- -,---- - --- 

I

Ik~~~~~~ ~Iy L~~~~~~~~~~~t

IVA: 5.000aiVy 0.a-7

ITfO 5. 000a0

,TL -4.245Q1

'V/0 2.500.0

I Vy 0. 0-6

TfD 5. 000e0

1TL -4.245.1

'. g

L._... -i. .

TL

. . __ . . . _ .. . . . . _ .I I _ .. -. _ . .. _. 

VX
TEST IDENTIFICATION: ALVE #36

STORAGE LOCATION : 01-04

PLOT NO. 3

MOTOR CURRENT & SWITCHES: OPEN TO CLOSE

STROKE TIME : 30.06 SECONDS PEAK INRUSH

AVE. RUN CURRENT

MAX. RUN CURRENT

SEATING CURRENT

: 14.5 AMPERES

: 3.54 AMPERES

: 3.64 AMPERES

: 15.5 AMPERES

F- - - --- , L

. , .

!V/D 1. 000.0

{Vy 0. -7

IT/D 5. 000.0

!TL -4. 310.1 wi

H -4 -- 'V.

L

vy -

CURRENT

SIGNATURE

_ 4 -

*L . . _ . .- ... . . - .- . . _ . --. -.. a . .... .. . - - _ . -

TL VX
TEST IDENTIFICAT!ON: VALVE 36

STORAGE LOCATION : 01-03

PLOT NO. 4

MOTOR CURRENT SWITCHES: CLOSE TO OPEN

STROKE TIME : 29.91 SECONDS PEAK INRUSH

AVE. RUN CURRENT

MAX. RUN CURRENT

END CURRENT

: 14.94 AMPERES

: 3.64 AMPERES

: 3.72 AMPERES

: 3.52 AMPERES

A ~~-----,"- '.-- -- r - I

iy

|v/1 1 00010 

iVy . a-7 

iT/3 5. DOOO i

jTL -4. 245o1

-t]

i

i -s i

t1 I

1 i

,

VI

CURRENT 

KL

i

SIGNATURE i

TL

I

-a _- .- _. . .. . -_ . . _ ... . _ _ - . .. _ .. _ . . . . - .

Vx
317

NUREG/CR-4380

ORNL-6226

Dist. Category RV

Internal Distribution

1. W. G. Craddick 11. G. A. Murphy

2-4. D. M. Eissenberg 12. F. R. Mynatt

5. P. G. Elliott 13. R. E. Trammell

6. J. A. Getsi 14. ORNL Patent Office

7. W. L. Greenstreet 15. Central Research Library

8. H. D. Haynes 16. Document Reference Section

9. R. C. Kryter 17-18. Laboratory Records Department

10. A. P. Malinauskas 19. Laboratory Records, RC

External Distribution

20. J. L. Crowley, Route 1, Box 92, Kingston, TN 37763

21. Secretary, Committee on Operation and Maintenance, ASME, 345 E.

47th Street, New York, NY 10017

22. J. B. Drab, Limitorque Corporation, 5114 Woodall Road, Lynchburg,

VA 24506

23. B. P. Brooks, Electric Power Research Institute, P.O. Box 10412,

Palo Alto, CA 94303

24. H. B. Burdette, Tennessee Valley Authority, Power Operations

Training Center, P.O. Box 2000, Soddy-Daisy, TN 37379

25. J. E. Rhoads, Washington Public Power Supply, 3000 George

Washington Boulevard, Richland, WA 99352

26. A. Marion, Baltimore Gas & Electric, P.O. Box 1475, Baltimore,

MD 21203

27. M. L. Stanley, EG&G Idaho, Inc., P.O. Box 1625, WCB-3, Idaho

Falls, ID 83415

28. J. H. Taylor, Engineering and Risk Assessment Division, Department of Nuclear Energy, Brookhaven National Laboratory, Upton,

NY 11973

29. A. B. Johnson, Pacific Northwest Laboratory, P.O. Box 999,

Richland, WA 99352

30. S. P. Carfagno, Franklin Research Center, 20th & Race Streets,

Philadelphia, PA 19103

31. J. Bothwell, Florida Power and Light Co., P.O. Box 029100,

Miami, FL 33102

32. B. D. Curry, Philadelphia Electric Co., P.O. Box 8699, Philadelphia, PA 19101

33. J. W. McElroy, Philadelphia Electric Co., P.O. Box 8699, Philadelphia, PA 19101

34. A. G. Charbonneau, MOVATS Inc., 2216 Smoke Stone Circle,

Marietta, GA 30062

35. R. Arnold, Rotork Controls, Inc., 19 Jet View Drive, Rochester,

NY 14624
318

36. B. M. Morris, Division of Engineering Technology, Office of

Nuclear Regulatory Research, U.S. Nuclear Regulatory Commission,

5650 Nicholson Lane, Rockville, MD 20852

37. J. P. Vora, Division of Engineering Technology, Office of

Nuclear Regulatory Research, U.S. Nuclear Regulatory Commission,

5650 Nicholson Lane, Rockville, MD 20852

38. G. C. Millman, Division of Engineering Technology, Office of

Nuclear Regulatory Research, U.S. Nuclear Regulatory Commission,

5650 Nicholson Lane, Rockville, MD 20852

39. G. H. Weidenhamer, Division of Engineering Technology, Office of

Nuclear Regulatory Research, U.S. Nuclear Regulatory Commission,

5650 Nicholson Lane, Rockville, MD 20852

40. E. J. Brown, Office for Analysis and Evaluation of Operational

Data, U.S. Nuclear Regulatory Commission, EWS-204B, Washington,

DC 20555

41. F. C. Cherny, Mechanical Engineering Branch, Division of

Engineering, Office of Nuclear Regulatory Research, Phillips

Building, 7920 Norfolk Avenue, Room P-522B, Mail P-522,

Bethesda, MD 20834

42. R. J. Kiessel, Engineering and Generic Communications Branch,

Division of Emergency Preparedness and Engineering Responsibility, Office of Inspection and Enforcement, Room E-501, Mail

EWW-359, East-West/West Towers, 4350 East-West Highway,

Bethesda, ND 20834

43. T. Le, Vendor Program Branch, Office of Inspection and Enforcement, East-West/West Towers, 4350 East-West Highway, Room E-458,

Mail EWW-359, Bethesda, MD 20834

44. 0. 0. Rothberg, Mechanical Engineering Branch, Division of

Engineering, Office of Nuclear Regulatory Research, Phillips

Building, 7920 Norfolk Avenue, Room P-501, Mail P-522, Bethesda,

MD 20834

45. J. D. Page, Mechanical Engineering Branch, Division of Engineering, Office of Nuclear Regulatory Research, Phillips Building,

7920 Norfolk Avenue, Room P-528, Mail P-522, Bethesda, MD 20834

46. C. Michelson, ACRS, 20 Argonne Plaza, Suite 365, Oak Ridge, TN

37830

47. R. E. Schnurstein, Energy Technology Engineering Center, Rockwell International Corporation, P.O. Box 1449, Canoga Park, CA

91304

48. J. Dickey, David Taylor Naval Ship R&D Center, Code 274R,

Annapolis, MD 21402

49. Office of Assistant Manager for Energy Research and Development,

Department of Energy, Oak Ridge Operations Office, Oak Ridge, TN

37831

50-51. Technical Information Center, Department of Energy, Oak Ridge,

TN 37831

52-426. Given distribution as shown in NRC category RV (10 - NTIS)
NC FORM 3S US NUCLEAR REGULATORY CO&MISSItO I REPORT NUMEER fAupoby rIoC. nW Vl Ne.. ffoayj

12-641

320t 320°2 BIBLIOGRAPHIC DATA SHEET NUREG/CR-4380

SEE INSTRUCTIONS ON THE REVERSE

l. TITLE AD SUBTITLE 3 LEAVE BLANK

Evaluation of the Motor-Operated Valve Analysis and Test

System (MOVATS) to Detect Degradation, Incorrect Adjust- 4 DATE REPORT COMPLETED

ments, and Other Abnormalities in Motor-Operated Valves MOoTH YEAR

%. AUTH1O0IS December 1985

B DArE REPORT ISSUED

J. L. Crowley and D. M. Eissenberg MONTH YEAR

; ______________________________________________________ January 1986

PERFORMING ORGANIZATION NAME AND MAILING ADDRESS H.CleuEZo Cbl U. PROJECTITASKIWORK UNIT NUMBER

Oak Ridge National Laboratory . FIN OR GRANT NUMBER

P. 0. Box Y

Oak Ridge, TN 37831 B0828

0. SPONSORING ORGANIZATION NAME AND MAILING ADDRESS 0MIudZo Cad.) Ia. TYPE OF REPORT

Division of Engineering Technology

Jffice of Nuclear Regulatory Research Topical

J.S. Nuclear Regulatory Commission b ERIODCOVfRED lart&^* t

Washington, DC 20555

2 SUPPLEMENTARY NOTES

3. ABSTRACT 02OO. Ad .orut

4s a part of the NRC Nuclear Plant Aging Research (NPAR) program, a field test program

zas carried out to evaluate a technique of valve signature analysis to detect and dif-

.erentiate abnormalities, including time-dependent degradation (aging) and incorrect

djustments in motor-operated valves. The technique described in this report is the

lotor-Operated Valve Analysis and Test System (MOVATS) which is commercially available

from MOVATS, Inc. In-situ signature traces were obtained on 36 motor-operated valves

it 4 nuclear plant sites. Described in this letter report are the test equipment

ackage, the method of obtaining the signatures, and the determinations made as a

esult of analyzing these signatures. Based on evaluations of the signature analysis

:echnique, and on the results obtained from the field test program, the capabilities

Lnd limitations of MOVATS are discussed.

DOCUMENT AALYSIS - KEYWORDS;DESCRIPTORS 15 AVAILABILITY STATEMENT

!otor operators, valves, aging, service wear, degradation, trend,

failure mode, failure cause, surveillance, monitoring, functional Unlimited

Zndicators

16 BECURITYCLASSIFNCATION

f ro Pag.e

IOENTIFIERS.OPEN ENDOD TERMS Unclassified

I ra Rota

Unclassified

17 NUMBER Of PAGES

Id PRICE
*U.S. GOVERNMENT PRINTING OFFICE: 1985631056/20206
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TIS UBRARIES

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