Page 1 of 33

March 13, 2007

Volume No. 10

Unit 1 & 2

Procedure No. A-200A

Revision No. 8

Approved by: James Tucker

EEMcCrillis

Unit 1 and 2 Cold Start-Up Procedure

CONTINUOUS

DATE_____________ PTL _________________

UNIT 1 2 PPT _________________

Table of Contents

1.0 Purpose

2.0 Limits and Precaution

3.0 Perform Control Room Preliminary Checks

4.0 Place Compressed Air System in Service

5.0 Place Closed Cooling Water (CCW) System in Service

6.0 Prepare Steam Turbine Generator and Gas Turbine Generator for 

Service

7.0 Place Condensate System in Service

8.0 Place Circulating Water System in Service

9.0 Prepare First Heat Recovery Steam Generator (HRSG) for Service

10.0 Place Fuel Gas Pre-Heater in service

11.0 Place Auxiliary Steam System in Service 

12.0 Place First Gas Turbine Generator (GT) in Service

13.0 Cold Steam Turbine Start

14.0 Prepare Second Heat Recovery Steam Generator (HRSG) for Service

15.0 Place Second Fuel Gas Pre-Heater in service

16.0 Place Second Gas Turbine in Service

17.0 Attachments
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Procedure No. A-200A

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Unit 1 and 2 Cold Start-Up Procedure

1.0 Purpose

1.1 This procedure provides direction for safe, reliable and efficient unit 

start-up. This procedure shall be use for Cold Start-Up

1.2 As the steps or operations are completed on each page the 

operator completing or directing the completion shall initial in the 

space provided at the bottom of each page. If the page is not 

completed by the same operator the operator turning over the 

procedure shall initial next to the last step completed.

1.3 Once this procedure and the milestone have been completed it 

shall be routed to the day shift PTL through the on shift PTL.

2.0 Limits and Precautions

2.1 Limits 

2.1.1 Although Applicable Operating limits will be mentioned 

through out this procedure, Comprehensive Equipment 

Operating limits are located in 1 and 2 Units Operating Limits 

Book. Should a conflict arise between these two documents 

the Operating Limits Book shall be used

2.1.2 Cold Start-Up procedure SHALL be followed when the 

Steam Turbine First Stage Metal OR Reheat Bowl Inner 

Metal temperatures is Less than 400OF

2.1.3 Warm Start-Up procedure SHALL be followed when the 

Steam Turbine First Stage Metal OR Reheat Bowl Inner 

Metal temperatures are Greater than 400OF but Less than 

700OF.

2.1.4 Hot Start-Up procedure SHALL be followed when the Steam 

Turbine First Stage Metal AND Reheat Bowl Inner Metal 

temperatures are Greater than 700OF.

2.1.5 Cold Start GT emission LIMITS (if off line for >72 hours)

Time is limited to 6 hours (GT not in Mode 6Q) 

NOx pounds per start 480 pounds

CO pounds per start 5412 pounds
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Unit 1 and 2 Cold Start-Up Procedure

2.1.6 WARM and HOT Start GT emission LIMITS

Time is limited to 4 hours (GT not in Mode 6Q) 

NOx pounds per start 320 pounds

CO pounds per start 3608 pounds

2.1.7 Steam Turbine 1 and HRSG 1 valve/equipment numbers will 

be used for clarity throughout this procedure. Attachment B 

contains the conversion chart for ST2 and GTs 2, 3 and 4

2.2 Precautions

2.2.1 This procedure attempts to but will not cover all possible 

conditions that may be encountered during Start-Up. If 

conditions arise that will cause deviations from the 

procedure the Operations PTL MUST be notified PRIOR to 

the deviation. The only exception to receiving PRIOR 

approval is in the event of an emergency situation. In this 

case the Operations PTL: MUST be notified as soon as the 

condition is stable.

3.0 Perform Control Room Preliminary Checks

3.1 At the DCS “U1_OVRVW” REPORTS Run Blocks in Manual report

Note: Some blocks may be left in manual due to equipment or DCS tuning 

problems. The Operations PTL must review and approve blocks to be left 

in manual.

3.1.1 Return blocks reported in Manual to Automatic except those 

approved by the Operations PTL to be left in manual

3.2 At the DCS “U1_OVRVW” REPORTS Run Inhibited Alarm report

Note: Some alarms may be left inhibited due to equipment or DCS tuning 

problems. The Operations PTL must review and approve alarms to be 

inhibited

3.2.1 Return inhibited alarms to active status except for those 

approved by the Operations PTL to remain inhibited

3.3 Ensure all 4160V Buss and 480V Load centers are normal. Verify 

all 4160V motors have been meggared. Any switching has been 

complete or switching written and ready to be assigned.
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Unit 1 and 2 Cold Start-Up Procedure

3.4 Ensure the following pre-start check lists have been completed.

3.4.1 Appropriate Gas Turbine 

3.4.1.1 B-200 Economy Pre-Start Valve Line-Up for Gas 

Turbine and Generator

3.4.1.2 B-201 Outage Pre-Start Valve Line-Up for Gas 

Turbine and Generator

3.4.2 Appropriate Steam Turbine 

3.4.2.1 X-XXX Economy Pre-Start Valve Line-Up for Steam 

Turbine and Generator

3.4.2.2 X-XXX Outage Pre-Start Valve Line-Up for Steam 

Turbine and Generator

3.4.3 Compressed Air System 

3.4.3.1 A-207 Compressed Air System Operations

3.4.4 Closed Cooling Water System 

3.4.4.1 A-209 Closed Cooling Water Pre-Operation Check 

Sheet

3.4.5 Appropriate Circulating Water System

3.4.5.1 D-203 Outage Circulating Water Pre-Start Check 

Sheet

3.4.5.2 D-204 Economy Circulating Water Pre-Start Check 

Sheet

3.4.6 Condensate System procedure

3.4.6.1 D-200 Outage Condensate System Pre-Start Valve

3.4.7 Fuel Gas Compressor System

3.4.7.1 A-210 Outage Fuel Gas Compressor Pre-Start 

Check Sheet
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Unit 1 and 2 Cold Start-Up Procedure

3.4.7.2 A-211 Economy Fuel Gas Compressor Pre-Start 

Check Sheet

3.4.8 Appropriate Heat Recovery Steam Generator System 

3.4.8.1 B-200 Outage Pre-Fire Check List for HRSG

3.4.8.2 B-201 Economy Pre-Fire Check List for HRSG

3.4.8.2 B-203B Restoring from HRSG Wet Lay Up with 

Nitrogen Cap

3.4.8.3 B-204 HRSG 1 and 3 Cold Fill/ B-205 HRSG 2 and 

4 Cold Fill

3.4.9 Auxiliary Steam System procedure

3.4.9.1 C-204 Auxiliary Steam System Pre-Start Check 

Sheet

4.0 Place Compressed Air system in service

4.1 Direct the Outside operator to Place the Compressed Air system in 

service as per A-207 Compressed Air System Operations

4.2 On the “COMPRESSED AIR” display check the Air Pressure 

normal (100-125psig)

5.0 Place Closed Cooling Water (CCW) system in service

5.1 At the DCS “Closed Cooling Water “ page start 1 CCW pump, verify 

discharge pressure and Bladder tank press increase to normal 

operating pressure. (80-115psig and 5-30 psig)

5.2 Place the second CCW pump in service and verify normal 

operating parameters (Discharge 80-115psig, Bladder Tank 5-

30psig)

5.3 Place the last idle CCW pump in AUTO (Stand-By)
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Unit 1 and 2 Cold Start-Up Procedure

6.0 Prepare Steam Turbine Generator and Gas Turbine Generator for

service

6.1 The following parameters or limits must be attained prior to starting 

the Steam Turbine

6.1.1 Lube Oil system in service and temperature 80-90 OF

6.1.2 Seal Oil system in service and H2 pressure normal

6.1.3 Hydraulic System in service

6.1.4 On Turning Gear for at least Four (4) hours and Eccentricity

less than 3.3 mils

6.1.5 Fire protection system in service

6.2 The following parameters or limits must be attained prior to starting 

the Gas Turbine

6.2.1 Lube Oil System in service and temperature 80-90 OF

6.2.2 Hydraulic System in service

6.2.3 On Turning Gear for at least Four (4) hours 

6.2.4 Fire protection system in service

7.0 Place Condensate System in service

7.1 At the DCS “LP DRUM” page complete the following (this applies to 

both LP Drums)

7.1.1 LP FW MOV 1700 open

7.1.2 Select and place in MAN with 0% output the LP Feedwater 

flow control

7.2 At the DCS “DEMIN WATER” page complete the following.

7.2.1 Demin Minimum Recirculation flow control on MAN and 

closed

7.2.2 Start one Demin pump
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Unit 1 and 2 Cold Start-Up Procedure

7.2.3 Open the Minimum Recirculation flow control until at or near 

normal flow (160gpm) and place control on AUTO/REMOTE

7.2.4 Place other Demin pump in AUTO

7.3 Place the Condensate system in service as per D-202 Placing 

Condensate System In Service

8.0 Place Circulating Water System in Service

8.1 Notify Unit 6/7 CO and Plant Common operator (if applicable) of the 

intent to start the CW system

8.2 Place the Circulating Water system in service as per D-205 Placing 

Circulating Water System In Service

Note: The CWP bearing vibration may initially spike above the alarm point and 

return to normal level. Starting subsequent CWPs may also cause the 

bearing vibration on the running CWP to spike above the alarm point. If 

the vibration does not return to normal with in a few seconds notify the 

PTL and prepare to secure the CWP

9.0 Prepare the First Heat Recovery Steam Generator for Service

9.1 At the DCS “HP DRUM” page complete the following

9.1.1 Check CLOSE the Evaporator intermittent blowdown MOV 

1280

9.1.2 Check OPEN the Feedwater MOV 1100

9.1.3 Select and place in MAN with 0% output the Feedwater flow

control 

9.1.4 Select and place in AUTO/LOCAL (800 OF) the Superheater 

Steam De-Superheater control (TV-1340)

9.1.5 Select and place in AUTO the Superheater Steam DeSuperheater block valve FSV 1340
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Unit 1 and 2 Cold Start-Up Procedure

9.2 At the DCS “IP DRUM” page complete the following

9.2.1 Check CLOSE the Evaporator Intermittent blowdown MOV 

1580

9.2.2 Select and OPEN the Feedwater MOV 1400

9.2.3 Select and place in MAN with 0% output the Feedwater flow

control

9.2.4 Select and place in AUTO/LOCAL (800 OF) the Reheat

Steam De-Superheater control (TV-1040)

9.2.5 Select and place in AUTO the Reheat Steam DeSuperheater block valve FSV 1040

9.2.6 Check OPEN the IP Steam to Re-Heater MOV 1650

9.2.7 Select and place in AUTO/REMOTE the IP Steam to ReHeater pressure control PV 1650

9.2.8 Select and OPEN the IP Superheater Drain AOV 1660

9.3 At the DCS from the “LP DRUM” page complete the following

9.3.1 Check CLOSE the Evaporator Intermittent blowdown MOV 

1880

9.3.2 Select and place in MAN Feedwater flow controller 

9.3.3 Open the FW flow controller to adjust the drum level to -9” 

and place in AUTO/REMOTE

9.3.4 Select and place in MAN Preheater Recirculation flow 

control

9.3.5 Select and START the Preheater Recirculation pump

9.3.6 Select and place in AUTO/REMOTE Preheater Recirculation

flow control

9.3.7 Select and OPEN the LP Superheater Drain AOV 1970

9.3.8 Select and OPEN the LP Steam Vent MOV 1960A
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9.3.9 Select and place in AUTO/REMOTE LP Steam Vent FV1960

9.4 At the DCS “FEEDWATER PUMP A/B” page complete the following

9.4.1 Select and check or satisfy the Boiler Feedwater Pump 

(BFP) start permissives

9.4.2 Notify the Outside Operator of your intent and START the 

BFP, verify the following

9.4.2.1 Total FW flow increase

9.4.2.2 IP FW pressure increase (550-600psig)

9.4.2.3 HP FW pressure increase (2400-2500psig)

9.4.2.4 Inboard and Outboard Pump bearing Vibration 

normal (<0.3 in/sec)

9.4.2.5 Inboard and Outboard Pump bearing Temperature 

normal (<170OF)

9.4.2.6 Inboard and Outboard Motor bearing Temperature 

normal (<170OF)

9.4.2.7 Suction Strainer Differential normal (<3.0 psid)

Note: When filling the HP/IP drums do so slowly to ensure that the LP drum level 

is not lowered too fast as to cause the Hotwell emergency make-up valve 

(LV 0144B) to open

9.5 At the DCS “HP DRUM” page complete the following

9.5.1 Slowly open the FW flow control to raise drum level to >-12” 

then close.

9.6 AT the DCS “IP DRUM” page complete the following

9.6.1 Slowly open the FW flow control to raise drum level to >-12” 

then close.

Note: The BFP may be secured at this point but, It will be needed when Bypassing the HP Steam
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Unit 1 and 2 Cold Start-Up Procedure

9.7 At the DCS “SCR” page complete the following

9.7.1 START primary dilution air blower (with the least running 

hours) in MANUAL and observe air flow increasing

9.7.2 PLACE standby dilution air blower in AUTO when flow 

>25,000 SCFM

9.7.3 START the dilution air heater

9.7.4 CHECK dilution air heater sump temp control setpoint at 550

9.7.5 PLACE the dilution air heater sump temp control in 

AUTO/LOCAL

9.7.6 Select and place in AUTO/REMOTE the Ammonia Flow 

Control Valve

Note: Verify one ammonia storage tank is in service and one Ammonia Feed 

pump in service, these can be seen on 6/7 DCS page “AMMONIA 

STORAGE AREA” and “VAPOR SKID.” IF system needs to be put in 

service, refer to OP PLT COMMON E-001

9.8 At the DCS from the “STEAM DRAINS” page check ALL Steam 

drains (20) in AUTO

Note: The Drains may be OPEN or CLOSED depending on the steam 

temperature (<50 OF saturation Drain will OPEN)

9.9 At the DCS “BLOWDOWN VALVES” page check ALL Blow down

Valves (5) in AUTO

Note: The Blowdown valves may be OPEN or CLOSED depending on the steam 

temperature (<50 OF saturation Drain will OPEN)

9.10 At the DCS “HP STEAM” page complete the following

910.1 Select and place in AUTO the HP By-Pass Spray Water 

Block valve HV 1110

910.2 Select and place in AUTO/REMOTE the HP By-Pass 

Temperature Control TV 1105

9.10.3 Select and place in MAN with 0% output the HP By-Pass 

Pressure Control PV 1100
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Unit 1 and 2 Cold Start-Up Procedure

9.11 At the DCS “IP STEAM” page complete the following

9.11.1 Select and place in AUTO the IP By-Pass Spray Water 

Block valve HV 1210

9.11.2 Select and place in AUTO the IP By-Pass Temperature 

Control in AUTO/REMOTE TV 1205

9.11.3 Select and place in MAN with 0% output the IP By-Pass 

Pressure Control PV 1200

9.12 At the DCS “LP STEAM” page complete the following

9.12.1 Select and place in AUTO the LP By-Pass Spray Water 

Block valve HV-0310

9.12.2 Select and place in AUTO the LP By-Pass Temperature 

Control in AUTO/REMOTE TV-0305

9.12.3 Select and place in MAN with 0% output the LP By-Pass 

Pressure Control PV-0300

10.0 Place Fuel Gas Preheater in service

10.1 At the DCS from the “FUEL GAS PREHEATER” page complete the 

following

10.1.1 Select and place in MAN with 0% output the Fuel Gas 

Preheater Temperature control

10.1.2 Select and place “IN SERVICE” the Fuel Gas Preheater

10.1.3 Observe the following Flow Valve positions

FV-4205 OPEN/AUTO

FV-4211 OPEN/AUTO

FV-4212 OPEN/AUTO

FV-4217 OPEN/AUTO

FV-4206 CLOSED/AUTO

FV-4213 CLOSED/AUTO

FV-4222 CLOSED/AUTO

FV-4223 CLOSED/AUTO

10.1.4 Select and place in AUTO/REMOTE the Fuel Gas 

Preheater Temperature control
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Unit 1 and 2 Cold Start-Up Procedure

11.0 Place Auxiliary Steam system in Service

11.1 Due to the various configurations for placing this system in service 

refer to the appropriate attachment from Procedure “A-200D”

11.1.1 Attachment “A” for placing the system in service using 

HRSG#1 HP Steam Source.

11.1.2 Attachment “B” for placing the system in service HP ByPass steam source

11.1.3 Attachment “C” for placing the system in service using any 

HRSG in service

11.2 Once the Auxiliary Steam System has been placed in service 

Vacuum may be pulled refer to step 12.7 to Pull Vacuum

12.0 Place First Gas Turbine in service

Note: Cold Steam Start may need to be selected on the CEMS DAHS computer. 

Refer to the appropriate Cold Start Milestone to determine if it is allowable 

to select.the Steam Turbine Cold Start button

12.1 At the DCS GT “CONTROL” page complete the following

12.1.1 Check or Satisfy the GT RESET PERMISSIVES

12.1.2 Select and RESET the GT MASTER RESET

12.2 At the “HP STEAM” page complete the following

12.2.1 If the HP Steam Temperature BEFORE the HP Steam 

MOV 1120 is equal to or greater than the AFTER 

Temperature proceed to the next step. If the temperature is 

not DO NOT complete until the proper steam conditions 

have been met

12.2.2 Select and OPEN the HP Steam Block valve MOV 1120

12.2.3 Select and OPEN the Cold Reheat Steam MOV 1185
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12.3 At the DCS “IP STEAM” page complete the following

12.3.1 If the IP Steam Temperature BEFORE the IP Steam MOV 

1230 is equal to or greater than the AFTER Temperature 

proceed to the next step. If the temperature is not DO NOT 

complete until the proper steam conditions have been met

12.3.2 Select and OPEN the IP Steam Block valve MOV 1230 

12.4 At the DCS “LP DRUM”” page complete the following

12.4.1 If the LP Steam Temperature BEFOR the LP Steam MOV 

1950 is equal to or greater than the AFTER Temperature 

proceed to the next step. If the temperature is not DO NOT 

complete until the proper steam conditions have been met

12.4.2 Select and OPEN the LP Steam Block valve MOV 1950

12.5 At the Mark 6 GT “Control /start-up” page complete the following

12.5.1 Select and RESET the Master Reset 

12.5.2 Select and RESET the Diagnostic Reset

12.5.3 Select Auto at the Mode Select

12.5.4 Check the Status “READY”

12.5.5 Check the Run Status “READY TO START” 

12.5.6 Select “Start” at the Master Control

12.6 Observe the GT

12.6.1 Observe GT speed increase to purge speed (850rpm)

12.6.2 Observe after the Purge Timer count down from 15 

minutes 

12.6.3 Observe GT speed decrease to 500 rpm and fires initiated

12.6.4 Observe GT speed increase after 60 second hold at 

550rpm
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Unit 1 and 2 Cold Start-Up Procedure

12.7 At the DCS “AMMONIA PUMPS” page complete the following

12.7.1 Start one of the Ammonia Metering pump

12.7.2 Place the pump metering flow control in MAN and set at 15% 

(this may need to be adjusted later). 

12.7.3 Check condensate sample system in service at condensate 

pump discharge and in Chem. Lab.

12.7.4 Ensure cation conductivity within limits.

12.8 At the DCS “PHOSPHATE PUMPS” page start the LP and HP 

pumps and in MANUAL control adjust the pump stroke as needed 

and leave in MAN (Boiler Feed Pump must be in service to start 

phosphate pumps)

12.9 At the DCS “HP DRUM” page open the HP to IP continuous 

blowdown. FV-1270.

12.10 At the DCS “IP DRUM” page open the IP to Cont Blowdown Tank 

continuous blowdown. FV-1570

12.11 Pull Condenser Vacuum

12.11.1 The Auxiliary Steam Source will dictate when vacuum is 

pulled. Once the Auxiliary steam system is in service 

proceed as follows.

12.11.2 Direct the Outside Operator to open the steam supply to 

the Hogger with the air removal closed

Note: The following steps 12.11.3 through 12.11.5 will need to be completed in a 

relatively rapid succession

12.11.3 With the Vacuum Breaker open and the Auxiliary Steam 

Temperature greater that 300 OF direct the Outside 

Operator to open the Hogger air removal valve

12.11.4 At the Mark 6 ST “AUX/steam seal” page place the Steam 

Seal Pressure Control in AUTO at 2.5-3.5 psi and select 

ON
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12.11.5 At the DCS “GLAND STM CNDSR” page start one Gland 

Steam Blower 

12.11.6 Observe the Condenser Vacuum backpressure 

decreasing, once the Vacuum is less than 28 inches Hg 

from the Mark 6 ST “AUX/MOV’s” page select and close 

the Condenser Vacuum Breaker Valve and have a water 

seal put on when closed

12.11.7 At the DCS the Condenser Vacuum is expressed in PSIA. 

Ensure that the IP and LP Steam By-Pass Valves are 

closed in MAN until the Condenser vacuum has stabilized 

at less than 6 psia

12.12 At the Mark 6 GT “Control/gen/exciter” page observe the following

12.12.1 GT Speed increase to 60 Hz 

12.12.2 EX2000 Running Status “Running”

12.12.3 EX2000 transfer to Auto

12.12.4 Generator Field Current and Voltage increasing

12.13 Hold the GT at FULL SPEED NO LOAD for 10 minute

12.14 Monitor HP, IP and LP drum pressures and direct the Outside 

Operator to close the drum vents when the pressure reaches 

25psig or greater (Only if the HRSG was vented)

12.15 At the Mark 6 GT “Control/synch” page complete/observe the 

following

Note: If 2 Auxiliary Lube oil or 2 Hydraulic oil pumps or the D/C Emergency Lube 

oil pump are running the GT will not be permitted to Sync

12.15.1 Select AUTO SYNC

12.15.2 Observe all AUTO PERMISSIVES are satisfied
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Unit 1 and 2 Cold Start-Up Procedure

12.15.3 Observe Sync Scope rotating slow in the clockwise

direction.

 Sync Scope is at 12 O’clock, 

Phase angle is 0 DGA

Diff Volts less than 1% 

Slip Freq 0 Hz

Slip less than 6 rpm

12.15.4 Observe 52G Breaker close

Note: ENERGY TRADING COMPANY must be notified of parallel times and ALL 

of these times must be entered into E-Log

12.16 At the Mark 6 GT “Control/start-up” page complete/observe the 

following

12.16.1 Select MW Control Setpoint and enter 5 mw

12.16.2 Select Preselect Ld Observe GT load increase to 5 mw

12.16.3 Hold 5 mw for 10 min

12.17 At the DCS from the “IP STEAM” page adjust the HRH-Bypass to 

maintain 125 psig and place in automatic

12.18 At the DCS from the “HP STEAM” page adjust the HP-Bypass to 

maintain 750psig and place in automatic

12.19 At the Mark 6 GT “Control/start-up” page raise the GT load to 10mw 

Note: Start the Fuel Gas compressor(s) as needed to maintain the fuel gas 

header pressure at setpoint (475-485 psi)

12.20 Hold 10mw until the HP and HRH steam By-Pass temperature is 

800 OF

12.21 At the DCS from the “HP STEAM” page adjust the GT EXHAUST 

TEMP setpoint to 700 OF

12.22 At the Mark 6 GT “Control/start-up” page raise the GT load setpoint 

to 20mw 
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Unit 1 and 2 Cold Start-Up Procedure

12.23 At the Mark 6 GT “Control/IGV Control” page select “ST Temp 

Matching” ON

12.24 At the Mark 6 GT “Control/IGV Control” page observe “Temp 

Matching Status” change to active when the GT load increases 

above 16-17 mw and the “Temp Matching Ref” decrease to 700 OF

12.25 Use the Temperature Matching and HP/HRH steam attemperation 

to control the ST stress less than 100%

13.0 Cold Steam Turbine Start

With the HP and HRH By-Pass steam temperature @ 700 OF

prepare to roll the Steam Turbine as follows

13.1 At the DCS page “STM TURB CTRL” select and reset BOP 

Permissives and select the STG TRIPPED INPUT BLOCK TO 

MANUAL, this will prevent the By-pass valves trip logic from 

initiating

13.2 At the Mark 6 ST “Tests/ETD- Offline” page complete/observe the 

following

13.2.1 Select and reset the “Master Reset”

13.2.2 Select and reset the “Diagnostic Reset”

13.2.3 With the Main Stop Valves (MSV) at 100% and the 

Admission Stop Valve (ASV) open Select ETD-1 Test “Test 

On”

13.2.4 Observe Reheat Stop Valve (RSV) increase to 100% and all 

valves trip closed

13.2.5 Repeat steps 13.2.1 through 13.2.4 for ETD-2

13.3 At the DCS page “STM TURB CTRL” select the STG Trip Input 

Block to Auto and the flashing warning will stop

13.4 At the Mark 6 ST “Aux/MOV’s” page verify ALL before and after 

seat drains are open

13.5 At the Mark 6 ST “Control/startup” complete/observe the following

13.5.1 Select and reset the “Master Reset”
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Unit 1 and 2 Cold Start-Up Procedure

13.5.1.1 Verify that MSV 1 & 2 and ASV are 100 % open, 

after the ASV opens, set LP Bypass to Condenser 

to 65 PSI.

13.5.1.2 The following steam drains will open for 15 Minutes

1BSTV0565 1BSTV0450 1BSTV0500

1BSTV0420 1BSTV1515 1BSTV0500A

1BSTV1430 1BSTV0505

1BSTV0445 1BSTV0530

13.5.2 Select and reset the “Diagnostic Reset”

13.5.3 Mode Select Control Mode select “Manual”

Note: Automatic is generally the preferred method for start-up but during a cold 

startup the steam turbine will be rolled in “Manual”

13.5.4 Check ATS Status “Start Permit” if not select Start Perm. 

And identify and satisfy the needed permissives

13.5.5 If the IP or HP Bore Temperature is less than 350 OF Place 

the Auto Start in Manual, Hold Off and select 1000 RPM

Hold 1000 RPM for 15 min then proceed

13.5.6 Observe the Reheat IV open and ST roll off the gear

13.5.7 Leave in “Manual” and select 3000 RPM set point once the 

required hold is complete (see milestone & step 13.9.2).

13.5.8 Leave in “Manual” and select 3600 RPM set point once the 

required hold is complete (see milestone) & L.O temp >95°F.

13.6 Use Starting and Loading Chart (Attachment C) to ensure the metal 

and steam to metal mismatches are controlled within these limits

13.7 For cold start use GT Steam Temperature Matching and slowly 

increase temperature setpoints from 700°F to 950°F, in 

conjunction with attemperation setpoints to control steam

temperature to metal temperature mismatch within acceptable 

limits. 

13.8 HP/IP Turbine Rotor stress shall be maintained at less than 100%

(Ideally at or less than 75%)
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13.9 The following HOLD times were derived from the GE Start and 

Loading Chart. (Continue w/Procedure and refer back to this list as 

needed. See Milestone for Predicted Hold Times)

13.9.1 1000RPM HOLD (none required by GE)

10 minutes recommended

IF RH or HP bore is less than 300°F

Use HIGH acceleration rate when accelerating to 3000rpm

13.9.2 3000RPM HOLD

IF RH Bowl Inner Surface is Greater than 250°F for 20 min 

NO HOLD

IF RH Bowl Inner Surface is less than 250°F

HOLD for 20 minutes once RH Inner Surface 250°F

AND IF

RH Bowl to steam difference Greater than 500°F

HOLD until less than 500°F

IF RH Bowl to steam difference Less than 500°F

NO HOLD

AND IF

Stress Monitor (Present Stress) Greater than 75%

HOLD until less than 75%

IF Stress Monitor (Look Ahead) Greater than 75%

HOLD until less than 75%

ST Lube Oil Temperature greater than 95°F

13.9.3 3600RPM HOLD (none required by GE) 

HOLD recommended if present stress is greater than 75% 

and or the Look Ahead Stress is greater than 85% 

Lube Oil Temperature greater than 105°F

13.9.4 10% Load HOLD (Reverse Flow)

IF RH Bowl Inner Surface is Greater than 350°F for 20 min 

NO HOLD

IF RH Bowl Inner Surface is less than 350°F

HOLD for 20 minutes once RH Inner Surface 350°F

AND IF RH Bowl to steam difference Greater than 300°F

HOLD until less than 300°F

IF RH Bowl to steam difference Less than 300°F

NO HOLD

AND IF Stress Monitor Greater than 75%

HOLD until less than 75%
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Unit 1 and 2 Cold Start-Up Procedure

13.9.5 ONCE in Forward Flow HOLD 20% Load

IF First Stage Inner Surface is Greater than 500°F for 40 min 

NO HOLD

IF First Stage Inner Surface is less than 500°F

HOLD for 40 minutes once First Stage Inner Surface 500°F

AND IF RH Bowl Inner Surface is Greater than 500°F for 20 

min NO HOLD

IF RH Bowl Inner Surface is less than 500°F

HOLD for 20 minutes once RH Inner Surface 500°F

AND IF Stress Monitor Greater than 75%

HOLD until less than 75%

13.10 At the DCS “IP DRUM” page Select and Close the IP Superheater 

Drain AOV 1660

13.11 Ensure the HP steam pressure is at 850pisg and HRH is at 125psig

13.12 At the Mark 6 ST “Control gen/exciter” page complete/observe the 

following

13.12.1 Select EX2000 and Start 

13.12.2 Observe Generator Field Current and Voltage increase

13.13 At the Mark 6 ST “Control/sync” page complete/observe the 

following once the Lube Oil Temperature is greater than 105°F

13.13.1 Observe the AUTO PERMISSIVES all satisfied

13.13.2 Select AUTO SYNC and observe the Sync Scope rotate

13.13.3 Observe the Generator breaker 52G close when

Sync Scope is at 12 O’clock, 

Phase angle is 0 DGA

Diff Volts less than 1% 

Slip Freq 0 Hz

Slip less than 6 rpm

13.14 At the Mark 6 ST “Control/startup” page complete the following

13.14.1 Control Mode Manual

13.14.2 Auto Start Commands Hold Off
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Unit 1 and 2 Cold Start-Up Procedure

13.15 At the Mark 6 ST “Control/unit control” page complete/observe the 

following

13.15.1 Load Control Load Cmd to 10%

13.15.2 Observe the Load Reference increase to 10%

13.15.3 Observe the Load increase to approximately 7-10mw

13.15.4 Hold Load Cmd at 10% until stresses are stable.

13.16 Once the GT Steam matching Set point has reached 900°F and the 

IGV DGA approximately 43.5% Remove the GT from steam 

temperature Matching and increase the GT load to 20mw

13.17 Once the proper temperatures have been established and Unit is 

stable proceed as follows

13.18 At the Mark 6 ST “Control/unit control” page complete/observe the

following once 20% load has been reached and HRH rotor stresses 

are <75% and stable:

13.18.1 Raise GT load to 25MW

13.18.2 Increase Load Cmd to 20%.

13.18.3 Observe the Load Reference increase to 20%

13.18.4 Observe the IV Reference (lower right hand corner under 

the unit tab) increase to 50%

13.18.5 Observe the Steam Turbine load increase to approximately 

10-20MW.

13.18.6 From the Flow Selection select “Forward”

13.18.7 Observe the CV open to control the ST Load Reference

13.18.8 Observe the Intercept Valves travel to 100%

13.18.9 Monitor HP stresses and continue to adjust attemperator to 

maintain HP rotor stress <75%
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Unit 1 and 2 Cold Start-Up Procedure

13.18.10 Monitor HRH stresses and continue to adjust attemperator 

to maintain RH rotor stress <75%.

13.19 At the DCS “HP STEAM” page close the HP steam by-pass valve

13.20 At the DCS “IP STEAM” page observe the HRH steam by-pass 

valve closing, will transfer to REMOTE/AUTO when IPC in is 

selected

13.21 Once the proper temperatures have been established and Unit is 

stable proceed as follows

13.22 At the Mark 6 GT “Control/start-up” page complete/observe the 

following

13.22.1 Select MW Control Setpoint and enter 115 mw

13.22.2 Observe GT load increasing

13.23 Hold until the HP steam pressure has recovered and is increasing

13.24 At the Mark 6 ST “Control/unit control” page complete the following: 

13.24.1 Increase Load Cmd @10% increments & observe stresses. 

Once stresses are <75% and stable and Load Cmd is 

greater than 60% continue with 13.24.3

13.24.2 Observe the ST Stresses as the Load increases. If ANY of 

the stresses increase to greater than 85% stop the Load 

Reference at the present load point. Hold the load 

reference until the stress levels off and starts decreasing 

before increasing the Load Reference

13.24.3 Select Inlet Pressure “IPC In”

13.24.4 Select Inlet Pressure “IP Setpoint “and set to 731 (psi)

13.24.5 Observe the Load reference increasing (will go to 

maximum of 104%)

13.24.6 Select the Admission Pressure “Flow Setpt” and set to 100

13.24.7 Observe the Admission Pressure “Adm Flow Ref” 

increasing (will go to 100%)
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Unit 1 and 2 Cold Start-Up Procedure

13.25 At DCS “HP STEAM” page check/place the HP steam by-pass 

valve in AUTO/REMOTE

13.26 At DCS “IP STEAM” page check/place the HRH steam by-pass 

valve in AUTO/REMOTE.

13.27 At the DCS “LP DRUM” Select and Close LP Superheater Drain 

AOV 1970

13.28 Once the GT has reached mode 6Q (approx 115mw) for 1 minute 

ensure the NOx has reduce to below 10ppm and the SCR ammonia 

flow control has started increasing to reduce the NOx to <2.5 (1.5 

setpoint)

13.29 At the CEMS computer perform a MANUAL Calibration on the 

appropriate GT once NOx is below 2.5ppm and stable. Calibration 

takes approximately 28 minutes to complete. After Calibration is 

complete verify that there are no CEMS faults and the GT has been 

calibrated correctly. Refer to procedure K-200 (Initiating a Manual 

Calibration with CEM Computer)

13.30 Once steam temps on HP and HRH have reached 1000degF, place 

steam attemperators in AUTO/REMOTE

 13.31 Verify all bypasses (HP/ HRH/ LP) closed.

13.32 Place the GT in external load and control load via the ULD.

13.33 Direct Outside 1&2 PPT to remove the generator collector fan and 

heater from service. 

14.0 Prepare the Second Heat Recovery Steam Generator for service

14.1 Verify Nitrogen cap has been removed from HRSG or HRSG has 

been vented properly prior to startup

14.2 At the DCS “HP DRUM” page complete the following

14.2.1 Check CLOSE the Evaporator intermittent blowdown MOV 

1280

14.2.2 Check OPEN the Feedwater MOV 1100
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14.2.3 Select and place in MAN with 0% output the Feedwater flow 

control 

14.2.4 Select and place in AUTO/REMOTE the Superheater Steam 

De-Superheater control 

14.2.5 Select and place in AUTO the Superheater Steam DeSuperheater block valve FSV 1340

14.3 At the DCS “IP DRUM” page complete the following

14.3.1 Check CLOSE the Evaporator Intermittent blowdown MOV 

1580

14.3.2 Select and OPEN the Feedwater MOV 1400

14.3.3 Select and place in MAN with 0% output the Feedwater flow 

control

14.3.4 Select and place in AUTO/REMOTE the Superheater Steam 

De-Superheater control 

14.3.5 Select and place in AUTO the Superheater Steam DeSuperheater block valve FSV 1040

14.3.6 Check OPEN the IP Steam to Re-Heater MOV 1650

14.3.7 Select and place in AUTO/REMOTE the IP Steam to ReHeater pressure control PV 1650

14.3.8 Select and OPEN the IP Superheater Drain AOV 1660

14.4 At the DCS from the “LP DRUM” page complete the following

14.4.1 Check CLOSE the Evaporator Intermittent blowdown MOV 

1880

14.4.2 Select and place in MAN Feedwater flow controller )

14.4.3 Open the FW flow controller to adjust the drum level to -9” 

and place in AUTO/REMOTE

14.4.4 Select and place in MAN Preheater Recirculation flow 

control
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14.4.5 Select and START the Preheater Recirculation pump

14.4.6 Select and place in AUTO/REMOTE Preheater Recirculation

flow control

14.4.7 Select and OPEN the LP Superheater Drain AOV 1970

14.4.8 Select and OPEN the LP Steam Vent MOV 1960A

14.4.9 Select and place in AUTO/REMOTE LP Steam Vent FV1960

14.5 At the DCS “FEEDWATER PUMP A/B” page complete the following

14.5.1 Select and check or satisfy the Boiler Feedwater Pump 

(BFP) start permissives

14.5.2 Notify the Outside Operator of your intent and START the 

BFP, verify the following

14.5.2.1Total FW flow increase

14.5.2.2IP FW pressure increase (550-600psig)

14.5.2.3HP FW pressure increase (2400-2500psig)

14.5.2.4Inboard and Outboard Pump bearing Vibration 

normal (<0.3 in/sec)

14.5.2.5Inboard and Outboard Pump bearing Temperature 

normal (<170OF)

14.5.2.6Inboard and Outboard Motor bearing Temperature 

normal (<170OF)

14.5.2.7Suction Strainer Differential normal (<3.0 psid)

Note: When filling the HP/IP drums do so slowly to ensure that the LP drum level 

is not lowered too fast as to cause the Hotwell emergency make-up valve 

(LV 0144B) to open

14.6 At the DCS “HP DRUM” page complete the following
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14.6.1 Slowly open the FW flow control to raise drum level to > -12” 

then close the control (out of alarm)

14.7 AT the DCS “IP DRUM” page complete the following

14.7.1 Slowly open the FW flow control to raise drum level to >-12” 

then closed the control.

Note: The BFP may be secured at this point but, It will be needed when Bypassing the HP Steam

14.8 At the DCS “SCR” page complete the following

14.8.1 START primary dilution air blower (with the least running 

hours) in MANUAL and observe air flow increasing

14.8.2 PLACE standby dilution air blower in AUTO when flow 

>25,000 SCFM

14.8.3 START the dilution air heater

14.8.4 CHECK dilution air heater sump temp control setpoint at 550

14.8.5 PLACE the dilution air heater sump temp control in 

AUTO/LOCAL

14.8.6 Select and place in AUTO/REMOTE the Ammonia Flow 

Control Valve

Note: Verify one ammonia storage tank is in service and one Ammonia Feed 

pump in service, these can bee seen on 6/7 DCS page “AMMONIA 

STORAGE AREA” and “VAPOR SKID”

14.9 At the DCS from the “STEAM DRAINS” page check ALL Steam 

drains (20) in AUTO

Note: The Drains may be OPEN or CLOSED depending on the steam 

temperature (<50 OF saturation Drain will OPEN)

14.10 At the DCS “BLOWDOWN VALVES” page check ALL Blow down 

Valves (5) in AUTO

Note: The Blowdown valves may be OPEN or CLOSED depending on the steam 

temperature (<50 OF saturation Drain will OPEN)

14.11 At the DCS “HP STEAM” page complete the following
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14.11.1 Select and place in AUTO the HP By-Pass Spray Water 

Block valve HV 1110

14.11.2 Select and place in AUTO/REMOTE the HP By-Pass 

Temperature Control TV 1105

14.11.3 Select and place in MAN with 0% output the HP By-Pass 

Pressure Control PV 1100

14.11.4 Place in AUTO the HP Steam Block valve MOV 1120

14.11.5 Place in AUTO the CRH Steam Block valve MOV 1185

14.12 At the DCS “IP STEAM” page complete the following

14.12.1 Select and place in AUTO the HRH By-Pass Spray Water 

Block valve HV 1210

14.12.2 Select and place in AUTO the HRH By-Pass Temperature 

Control in AUTO/REMOTE TV 1205

14.12.3 Select and place in MAN with 0% output the HRH By-Pass 

Pressure Control PV 1200

14.12.4 Select and place in AUTO the HRH Steam Block valve HV 

1230

15.0 Place the Second Fuel Gas Preheater in Service

15.1 At the DCS from the “FUEL GAS PREHEATER” page complete the 

following

15.1.1 Select and place in MAN with 0% output the Fuel Gas 

Preheater Temperature control

15.1.2 Select and place “IN SERVICE” the Fuel Gas Preheater

15.1.3 Observe the following Flow Valve positions

FV-4205 OPEN/AUTO

FV-4211 OPEN/AUTO

FV-4212 OPEN/AUTO

FV-4217 OPEN/AUTO

FV-4206 CLOSED/AUTO
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FV-4213 CLOSED/AUTO

FV-4222 CLOSED/AUTO

FV-4223 CLOSED/AUTO

15.1.4 Select and place in AUTO/REMOTE the Fuel Gas 

Preheater Temperature control

16.0 Place Second Gas Turbine in Service 

16.1 At the DCS GT-1 “CONTROL” page complete the following

16.1.1 Check or Satisfy the GT RESET PERMISSIVES

16.1.2 Select and RESET the GT MASTER RESET

16.2 At the Mark 6 GT “Control /start-up” page complete the following

16.2.1 Select and RESET the Master Reset 

16.2.2 Select and RESET the Diagnostic Reset

16.2.3 Select Auto at the Mode Select

16.2.4 Check the Status “READY”

16.2.5 Check the Status “READY TO START” 

16.2.6 Select “Start” at the Master Control

16.3 Observe the GT

16.3.1 Observe GT speed increase to purge speed (850rpm)

16.3.2 Observe after the Purge Timer count down from 15 

minutes 

16.3.3 Observe GT speed decrease to 500 rpm and fires initiated

16.3.4 Observe GT speed increase after 60 second hold at 

550rpm

16.4 At the Mark 6 GT “Control/gen/exciter” page observe the following

16.4.1 GT Speed increase to 60 Hz 
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16.4.2 EX2000 Running Status “Running”

16.4.3 EX2000 transfer to Auto

16.4.4 Generator Field Current and Voltage increase

16.5 Hold the GT at FULL SPEED NO LOAD for 10 minute

16.6 Monitor HP, IP and LP drum pressures and direct the Outside

Operator to close the drum vents when the pressure reaches 

25psig or greater (Only if the HRSG was vented)

16.7 At the Mark 6 GT “Control/synch” page complete/observe the 

following

Note: If 2 Auxiliary Lube oil or 2 Hydraulic oil pumps or the D/C Emergency Lube 

oil pump are running the GT will not be permitted to Sync

16.7.1 Select AUTO SYNC

16.7.2 Observe all AUTO PERMISSIVES

16.7.3 Observe Sync Scope rotating slow in the fast direction.

Sync Scope is at 12 O’clock, 

Phase angle is 0 DGA

Diff Volts less than 1% 

Slip Freq 0 Hz

Slip less than 6 rpm

16.7.4 Observe 52G Breaker close

Note: ENERGY TRADING COMPANY must be notified of parallel times and ALL 

of these times must be entered into E-Log

16.8 At the DCS “PHOSPHATE PUMPS” page start the LP and HP 

pumps and in MANUAL control adjust the pump stroke as needed 

and leave in MAN (Boiler Feed Pump must be in service to start 

phosphate pumps)

16.9 At the DCS “HP DRUM” page open the HP to IP continuous 

blowdown. FV-1270.
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16.10 At the DCS “IP DRUM” page open the IP to Cont Blowdown Tank 

continuous blowdown. FV-1570

16.11 At the Mark 6 GT “Control/start-up” page complete/observe the 

following

16.11.1 Select MW Control Setpoint and enter 5 mw

16.11.2 Select Preselect Ld Observe GT load increase to 5 mw

16.11.3 Hold 5 mw for 10 min

16.12 At the DCS from the “IP STEAM” page adjust the HRH-Bypass to 

maintain the same pressure as the in service HRSG and place in 

automatic

16.13 At the DCS from the “HP STEAM” page adjust the HP-Bypass to 

maintain the same pressure as the in service HRSG and place in 

automatic

16.14 At the Mark 6 GT “Control/start-up” page raise the GT load to 25mw 

Note: Start the Fuel Gas compressor(s) as needed to maintain the fuel gas 

header pressure at setpoint (475-485 psi)

16.15 At the DCS from the “HP STEAM” page observe the HP Steam 

MOV-1120 and CRH stream stop HV-1185 open when the Steam 

temperature difference between the in service HRSG and the 

HRSG on coming is equal to or less than 200 OF

16.16 After the HP steam MOV-1120 and HRH HV-1185 start opening; at 

the Mark 6 GT “Control/start-up” raise the Preselect load setpoint to 

115MW.

16.17 At DCS “HP STEAM” page check/place the HP steam by-pass 

valve in AUTO/REMOTE

16.18 At the DCS from the “IP STEAM” page observe the HRH Steam 

MOV-1230 open when the Steam temperature difference between 

the in service HRSG and the HRSG on coming is equal to or less 

than 200 OF
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16.19 At DCS “IP STEAM” page check/place the HRH steam by-pass 

valve in AUTO/REMOTE

16.20 At the DCS “IP DRUM” page Select and Close the IP Superheater 

Drain AOV 1660.

16.21 Once the GT has reached Mode 6Q for one minute observe the 

ammonia Flow Control will start injecting to control the NOx to 

1.5ppm

16.22 At the CEMS computer perform a MANUAL Calibration on the 

appropriate GT once NOx is below 2.5ppm and stable. Calibration 

takes approximately 28 minutes to complete. After Calibration is 

complete verify that there are no CEMS faults and the GT has been 

calibrated correctly. Refer to procedure K-200 (Initiating a Manual 

Calibration with CEM Computer)

16.23 At the DCS from the “LP Drum” page, once the steam temperature 

and pressure difference between the in service HRSG and the 

HRSG on coming is equal to or less than 200°F and 25psig open 

the LPSH MOV-1050

16.24 At the DCS “LP DRUM” Select and Close LP Superheater Drain 

AOV 1970

16.25 At the DCS from the “Auxiliary Steam” page, once the difference 

between the in service HRSG IP Drum pressure and IPSH 

temperature are within 25°F and 50psig, open the Aux Steam 

MOV-1202

16.26 Verify all bypasses (HP/ HRH/ LP) closed.

16.27 Place the GT in external load and control load via the ULD.
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Unit 1 and 2 Cold Start-Up Procedure

ATTACHMENT “B”: Valve/device Numbering Convention

Valve number 1BS-PV-1100

Is 1 unit 1 HRSG HP Steam By-Pass valve

Valve number 1BS-PV-2100

Is 1 unit 2 HRSG HP Steam By-Pass valve

Valve number 2BS-PV-1100

Is 2 unit 3 HRSG HP Steam By-Pass valve

Valve number 2BS-PV-2100

Is 2 unit 4 HRSG HP Steam By-Pass valve

As can be seen by the above example the first number in the descriptor is the 

Unit Designation, the text following the number are the system designator 

(BS=Boiler Steam) the next text is type of control or valve (PV=Pressure Valve) 

the last sequence of numbers is the HRSG and valve designator (1100=1HRSG 

Valve 100)

Pump number 1FW-P-1100A

Is 1 Unit, 1 HRSG, A Boiler Feedwater pump

Pump number 1FW-P-2100A

Is 1 Unit, 2 HRSG, A Boiler Feedwater pump

Pump number 2FW-P-1100A

Is 2 Unit, 3 HRSG, A Boiler Feedwater pump

Pump number 2FW-P-2100A

Is 2 Unit, 4 HRSG, A Boiler Feedwater pump

As can be seen by the above example the first number in the descriptor is the 

Unit Designation, the text following the number are the system designator 

(FW=Feedwater) the next text is type of device (P=Pump) the last sequence of 

numbers is the HRSG and pump designator (1100A=1HRSG Pump 100A)
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Procedure No. A-200A

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Unit 1 and 2 Cold Start-Up Procedure

ATTACHMENT “C”: STARTING AND LOADING CHART