LOCATION

FT MYERS PLANTPROCEDURE NUMBER

COMBUSTION TURBINE-004

COMBUSTION TURBINE REV. N

CT OFFLINE WATER WASHVALVING & TAG-OUT

DATE 10/26/00

PROCEDURE 1 OF 18

OBJECTIVE

This procedure is performed as scheduled when indicated by the Loss of Turbine Performance. Usually the Off Line Water Wash is performed following a unit outage and less than 24 hours to On­Line. The time limit between wash and firing the unit will prevent internal corrosion.The desired outcome of the procedure is the removal of deposits from atmospheric contaminants on the compressor parts, restoring the turbine to optimal performance. 

SAFETY AND ENVIRONMENTAL

1. Plant required personal protective equipment (i.e. Safety glasses, hard hat, gloves, etc.)

2. The water wash operation involves water under high pressure. Caution must be exercised to ensure the proper positioning of all valves during this operation, since the water is HOT, necessary precautions should be taken in handling valves, pipes, and potentially HOT SURFACES.

3. While detergent is being injected into the wash water, avoid skin contact and breathing fumes produced in and around CT compartment. Review the MSDS of this product.

PREREQUISITES

1. Insure detergent is available, and the water wash supply tank is preheated to 150/180 degs.

2. Verify second stage wheelspace temperature is < 150°F at turning gear speed.

3. Verify Water Wash Drain tank has room for wash water.

4. Verify that the Off Line Water Wash procedure and inplant clearance have been completed.

5. Use GE drawings 352b4351 , P&ID M605 , GE TIL 1236-2 ,GEK 107122A , for more detailed information.

1

LOCATION

FT MYERS PLANTPROCEDURE NUMBER

COMBUSTION TURBINE-004

COMBUSTION TURBINE REV. N

CT OFFLINE WATER WASHVALVING & TAG-OUT

DATE 10/26/00

PROCEDURE 2 OF 18

GENERAL PROCEDURE

Valve Line up for Off-Line Water Wash

Water Wash Skid House

1. Prepare Wash Water Skid for operation:

a) Verify a full Water Wash tank ________

b) Verify a full Detergent Tank (4 parts of water to 1 part detergent) ________

c) Prepare water by aligning controls at Wash Skid. Give 8 to 12Hours to reach 180°F.________

d) Verify that the Water Wash Drain Tank (3000 gal capacity) hasenough capacity to store water wash. Note: Drain tanks are buried in the ground between units A/B,C/D and West Side of F. Each drain tank has a high level alarmAt 2250 gallons and a high/high alarm at 2700 gallons. ________

2

1c

1b

1a

LOCATION

FT MYERS PLANTPROCEDURE NUMBER

COMBUSTION TURBINE-004

COMBUSTION TURBINE REV. N

CT OFFLINE WATER WASHVALVING & TAG-OUT

DATE 10/26/00

PROCEDURE 3 OF 18

Secure and Tag out CT to Safely prepare for Water Wash.

2. Open and Tag LCI disconnect for combustion turbine to be washed. ________

3. Close and Tag coalescing filter supply valve (S), filter skid bypass valve (BP)and tag open filter skid vent.

_________ CAUTION!! Header between coalescing filter and the CT gas valveswill contain 450 psi gas. Be careful when venting.

3

2

Vent

BP

S

LOCATION

FT MYERS PLANTPROCEDURE NUMBER

COMBUSTION TURBINE-004

COMBUSTION TURBINE REV. N

CT OFFLINE WATER WASHVALVING & TAG-OUT

DATE 10/26/00

PROCEDURE 4 OF 18

4. Secure and Tag CO2 fire protection to CT. Manual isolation valve on top of tank can be locked in the closed position.

_________

Prepare CT for Wash, align drain pathway and Isolate CT subsystems.Using In-Plant Clearance Procedure.

5. Starting on the inside of the CT compartment, Open and Tag both ballvalves (WW-1 & WW-3 ) on the drain header that are attachedto the seven (7) lower combustion cans (4 through 10). This is known as the Combustion Chamber Drain Header. _________

6. Close and Tag 1” vent valve (WW-2) _________between the isolation valves. Note: This valve is left open during normal operations and is used as a tail tail to prevent leaking isolationvalve from going undetected. This would prevent the drain header from leaking into the CT compartment.

4

WW­1

4

LOCATION

FT MYERS PLANTPROCEDURE NUMBER

COMBUSTION TURBINE-004

COMBUSTION TURBINE REV. N

CT OFFLINE WATER WASHVALVING & TAG-OUT

DATE 10/26/00

PROCEDURE 5 OF 18

Inside CT compartment

7. Close and Tag the East Side 9th and 13th stage extraction isolation valves.(WW-4 & WW-6) _________

8. Open and Tag the Drain valves. (WW-5 & WW-7) _________

9. Close and Tag the West Side 9th and 13th stage extraction isolation valves. (WW-8 & WW-10) _________

10. Open and Tag the Drain valves. (WW-9 & WW-11) _________

5

WW­2WW­3

WW­4

WW­5

9th Stage 13th Stage

WW­6

WW­7

WW­8

WW­10

WW­11WW­9

LOCATION

FT MYERS PLANTPROCEDURE NUMBER

COMBUSTION TURBINE-004

COMBUSTION TURBINE REV. N

CT OFFLINE WATER WASHVALVING & TAG-OUT

DATE 10/26/00

PROCEDURE 6 OF 18

11. Open and Tag Turbine belly manway cover inspection plate drain valve.(WW-12) ________

12. Open and Tag Atomizing Air header drain valve. (WW-13) ________

13. Close and Tag compressor bleed (surge) operating air supply valve(WW-14) located between combustor cans 8 & 9. This compressor discharge pressure controls the operation of the compressor surge valveslocated on the east and west side of the CT exhaust duct. _________ NOTE After the Water Wash the line from this valve will need to bedisconnected at the elbow to allow water to drain that may leak by the isolation valve.

6

WW­12 WW­13

East surge vlv’s

WW­14

LOCATION

FT MYERS PLANTPROCEDURE NUMBER

COMBUSTION TURBINE-004

COMBUSTION TURBINE REV. N

CT OFFLINE WATER WASHVALVING & TAG-OUT

DATE 10/26/00

PROCEDURE 7 OF 18

14. Open and tag compressor bleed heat drain valve. (WW-15)Note: Ball valve located in CT Compartment. _________

East side of the CT Compartment

15. Close and Tag Compressor Bleed Heat manual isolation valve (WW-20) _________

7

WW­20

WW­15

LOCATION

FT MYERS PLANTPROCEDURE NUMBER

COMBUSTION TURBINE-004

COMBUSTION TURBINE REV. N

CT OFFLINE WATER WASHVALVING & TAG-OUT

DATE 10/26/00

PROCEDURE 8 OF 18

16. Open and Tag the following drain valves:

WW-22 (9th stage extraction drain) ________WW-24 (13th stage extraction drain) ________WW-23 (Atomizing Air Header drain) ________WW-21 (Bleed Heat drain) ________

West side of CT Compartment

17. Open and Tag 9th stage extraction drain (WW-25) _________

8

WW­22

WW­21

WW­23WW­24

LOCATION

FT MYERS PLANTPROCEDURE NUMBER

COMBUSTION TURBINE-004

COMBUSTION TURBINE REV. N

CT OFFLINE WATER WASHVALVING & TAG-OUT

DATE 10/26/00

PROCEDURE 9 OF 18

18. Open and Tag False fired drain valve. (WW-26) _________

19. Open and Tag both Exhaust Frame vertical joint drains. _________ (WW-27 & WW-28)

20.Open and Tag Exhaust Diffuser Duct 8” drain valve. (WW-29) _________

9

WW­26

WW­28 WW­27

WW­25

LOCATION

FT MYERS PLANTPROCEDURE NUMBER

COMBUSTION TURBINE-004

COMBUSTION TURBINE REV. N

CT OFFLINE WATER WASHVALVING & TAG-OUT

DATE 10/26/00

PROCEDURE 10 OF 18

East side of PEECC

21. Open and Tag 13th stage extraction drain valve (WW-30). _________

22.Open and Tag CT Inlet Plenum drain valve (WW-31). _________

10

13th stage drain WW­30

WW­29

LOCATION

FT MYERS PLANTPROCEDURE NUMBER

COMBUSTION TURBINE-004

COMBUSTION TURBINE REV. N

CT OFFLINE WATER WASHVALVING & TAG-OUT

DATE 10/26/00

PROCEDURE 11 OF 18

Inside CT Compartment

Note: Execute the following steps after the Rinse Cycle and before the Drying Cycle.

23.Remove and Tag drain plug from East Atomizing Air Supply Line elbow_________(WW-32)

24. Remove and Tag drain plug from West Atomizing Air Supply Line elbow _________(WW-33)

25.With all the low point drains opened and tagged, the last step before

11

WW­31

WW­33

WW­32

LOCATION

FT MYERS PLANTPROCEDURE NUMBER

COMBUSTION TURBINE-004

COMBUSTION TURBINE REV. N

CT OFFLINE WATER WASHVALVING & TAG-OUT

DATE 10/26/00

PROCEDURE 12 OF 18

releasing the clearance on the LCI is to set both exhaust frame blowersto the HAND position. _________Note: The corresponding switches are located on the 480vbreakers (MCC) in the PEECC Skids.

26.Just prior to wash , set Water Wash 3-way valve for wash (B/C position) _________

27.Open Water Wash supply isolation ball valve up stream of 3 - way valve _________

12

24

WW 3­way Step 

WW S/VStep # 27

LOCATION

FT MYERS PLANTPROCEDURE NUMBER

COMBUSTION TURBINE-004

COMBUSTION TURBINE REV. N

CT OFFLINE WATER WASHVALVING & TAG-OUT

DATE 10/26/00

PROCEDURE 13 OF 18

Valve Line up for Off-Line Water Wash

Water Wash Skid House

1. Prepare Wash Water Skid for operation:

a. Verify a full Water Wash tank _________

b. Verify a full Detergent Tank (4 parts of water to 1 part detergent) _________

c. Prepare water by aligning controls at Wash Skid. Give 8 to 12Hours to reach 180°F._________

d. Verify that the Water Wash Drain Tank (3000 gal capacity) hasenough capacity to store water wash. Note: Drain tanks are buried in the ground between units A/B,C/D and West Side of F. Each drain tank has a high level alarmAt 2250 gallons and a high/high alarm at 2700 gallons. _________

Secure and Tag out CT to Safely prepare for Water Wash.

2. Open and Tag LCI disconnect for combustion turbine to be washed. _________

3. Close and Tag coalescing filter supply valve (S), filter skid bypass valve (BP)and tag open filter skid vent. _________ CAUTION!! Header between coalescing filter and the CT gas valves

13

LOCATION

FT MYERS PLANTPROCEDURE NUMBER

COMBUSTION TURBINE-004

COMBUSTION TURBINE REV. N

CT OFFLINE WATER WASHVALVING & TAG-OUT

DATE 10/26/00

PROCEDURE 14 OF 18

will contain 450 psi gas. Be careful when venting.

4. Secure and Tag CO2 fire protection to CT. Manual isolation valve on top of tank can be locked in the closed position.

_________ Prepare CT for Wash, align drain pathway and Isolate CT subsystems.Using In-Plant Clearance Procedure.

5. Starting on the inside of the CT compartment, Open and Tag both ballvalves (WW-1 & WW-3 ) on the drain header that are attachedto the seven (7) lower combustion cans (4 through 10). This is known as the Combustion Chamber Drain Header. _________

6. Close and Tag 1” vent valve (WW-2) between isolation valves. _________Note: This valve is left open during normal operations and is usedas a tail tail to prevent leaking isolation valve from going undetected.This would prevent the drain header from leaking into the CT compartment.

Inside CT compartment

7. Close and Tag the East Side 9th and 13th stage extraction isolation valves.(WW-4 & WW-6) _________

8. Open and Tag the Drain valves. (WW-5 & WW-7) _________

9. Close and Tag the West Side 9th and 13th stage extraction isolation valves. (WW-8 & WW-10) _________

10. Open and Tag the Drain valves. (WW-9 & WW-11) _________

11. Open and Tag Turbine belly manway cover inspection plate drain valve.(WW-12) _________

12. Open and Tag Atomizing Air header drain valve. (WW-13) _________

13. Close and Tag compressor bleed (surge) operating air supply valve(WW-14) located between combustor cans 8 & 9. This compressor discharge pressure controls the operation of the compressor surge valves

14

LOCATION

FT MYERS PLANTPROCEDURE NUMBER

COMBUSTION TURBINE-004

COMBUSTION TURBINE REV. N

CT OFFLINE WATER WASHVALVING & TAG-OUT

DATE 10/26/00

PROCEDURE 15 OF 18

located on the east and west side of the CT exhaust duct. _________ NOTE After the Water Wash the line from this valve will need to bedisconnected at the elbow to allow water to drain that may leak by the isolation valve.

14. Open and tag compressor bleed heat drain valve. (WW-15)Note: Ball valve located in CT Compartment. _________

East side of the CT Compartment

15. Close and Tag Compressor Bleed Heat manual isolation valve (WW-20) _________

Note: The remainder of valves are located outside the CT Compartment.

16. Open and Tag the following drain valves:

WW-22 (9th stage extraction drain) _________WW-24 (13th stage extraction drain) _________WW-23 (Atomizing Air Header drain) _________WW-21 (Bleed Heat drain) _________

West side of CT Compartment

17. Open and Tag 9th stage extraction drain (WW-25) _________

18. Open and Tag False fired drain valve. (WW-26) _________

19. Open and Tag both Exhaust Frame vertical joint drains. _________ (WW-27 & WW-28)

20.Open and Tag Exhaust Diffuser Duct 8” drain valve. (WW-29) _________

East side of PEECC

21. Open and Tag 13th stage extraction drain valve (WW-30). _________

15

LOCATION

FT MYERS PLANTPROCEDURE NUMBER

COMBUSTION TURBINE-004

COMBUSTION TURBINE REV. N

CT OFFLINE WATER WASHVALVING & TAG-OUT

DATE 10/26/00

PROCEDURE 16 OF 18

22.Open and Tag CT Inlet Plenum drain valve (WW-31). _________

Inside CT Compartment

Note: Execute the fllowing steps after the Rinse Cycle and before the Drying Cycle.

23.Remove and Tag drain plug from East Atomizing Air Supply Line elbow_________(WW-32)

24.Remove and Tag drain plug from West Atomizing Air Supply Line elbow _________(WW-33)

25.With all the low point drains opened and tagged, the last step before

releasing the clearance on the LCI is to set both exhaust frame blowersto the HAND position. _________Note: The corresponding switches are located on the 480vbreakers (MCC) in the PEECC Skids.

26.Just prior to wash , set Water Wash 3-way valve for wash (B/C position) _________

27. Open Water Wash supply isolation ball valve up stream of 3 - way valve _________

OFF LINE WATER WASH ATTACHMENT 1

EQUIPMENT NAME Tag No. Wash Position Normal PositionThe following tags are inside the CT compartment

Combustion ChamberHeader Drain Valve

1 Open Closed

Combustion ChamberVent Valve

2 Closed Open

Combustion ChamberHeader Drain Valve

3 Open Closed

East 9th Stage Extraction Valve 4 Closed OpenEast 9th Stage Extraction

Drain Valve5 Open Closed

East 13th Stage Extraction Valve 6 Closed OpenEast 13th Stage Extraction

Drain Valve7 Open Closed

16

LOCATION

FT MYERS PLANTPROCEDURE NUMBER

COMBUSTION TURBINE-004

COMBUSTION TURBINE REV. N

CT OFFLINE WATER WASHVALVING & TAG-OUT

DATE 10/26/00

PROCEDURE 17 OF 18

West 9th Stage Extraction Valve 8 Closed OpenWest 9th Stage Extraction

Drain Valve9 Open Closed

West 13th Stage Extraction Valve 10 Closed OpenWest 13th Stage Extraction

Drain Valve11 Open Closed

Lower Turbine Manway Drain 12 Open ClosedAtomizing Air Header Drain Valve 13 Open Closed

Compressor Bleed Control Air(Between 8th and 8th can)

14 Closed OpenSEE NOTE 1

Compressor Bleed HeatDrain Valve

15 Open Closed

Gas Header PM-1 Drain(Flange)

16 Remove Flange Replace Flange

Gas Header PM-2 Drain(Flange)

17 Remove Flange Replace Flange

Gas Header PM-3 Drain (Flange)

18 Remove Flange Replace Flange

Gas Header PM-4 Drain(Flange)

19 Remove Flange Replace Flange

Bleed Heat Manual Isolation Valve 20 Closed Open

The following tags are located on the East side of CT, outside the CT compartmentBleed Heat Drain Valve 21 Open Closed

East 9th Stage ExtractionDrain Valve

22 Open Closed

Atomizing Air Drain Valve 23 Open ClosedEast 13th Stage Extraction

Drain Valve24 Open Closed

The following tags are located on the west side of CT compartment

West 9th Stage ExtractionDrain Valve

25 Open Closed

False Fire Drain Valve 26 Open ClosedExhaust Frame Vertical Joint

Drain Valve (South Drain)27 Open Closed

Exhaust Frame Vertical Joint Drain Valve (North Drain)

28 Open Closed

Exhaust Diffuser Duct Drain(8-inch drain)

29 Open Closed

The following tags are located on the northwest side of CT compartment (under Inlet Plenum)

17

LOCATION

FT MYERS PLANTPROCEDURE NUMBER

COMBUSTION TURBINE-004

COMBUSTION TURBINE REV. N

CT OFFLINE WATER WASHVALVING & TAG-OUT

DATE 10/26/00

PROCEDURE 18 OF 18

West 13th Stage ExtractionDrain Valve

30 Open Closed

Inlet Plenum Drain Valve 31 Open ClosedWater Wash 3-way valve B/C

The following tags are located inside CT compartmentEast Atomizing Air Supply Line

Elbow Drain Plug32 Remove & Tag Replace

West Atomizing Air Supply LineElbow Drain Plug

33 Remove & Tag Replace

Exhaust Frame Blowers Manual AutoNote: When placed in Manual the Exhaust Frame Blowers will start.

NOTE 1: After the completion of the water wash BEFORE OPENING the Compressor Bleed Operating Air Isolation valve WW-14. The tubing line connected to the discharge side of this valve MUST be disconnected at the elbow. The valve will need to be OPENED. This will allow any water in this line to drain. After ALL water has drained from this line the tubing should be replaced at the elbow.

18