LOCATION
PROCEDURE NUMBER
FT MYERS PLANT COMBUSTION TURBINE CT OFFLINE WATER WASH VALVING VALVING & TAG-OUT TAG-OU T PROCEDURE
COMBUSTION TURBINE-004 REV. N
DATE DATE 10/26/ 10/26/00 00
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 protective equipment equipment (i.e. Safety glasses, hard hard hat, gloves, etc.) 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, HOT, necessary precautions should be taken in handling valves, pipes, and potentially HOT SURFACES. 3. While detergent is being injected into the wash water, water, avoid skin contact contact and breathing fumes produced in and around CT compartment. Review the MSDS of this product.
PREREQUISITES 1. Insure detergent detergent is available, available, and the the water water wash wash supply supply tank is preheated to 150/180 150/180 degs. 2. Verify second stage wheelspace wheelspace temperature temperature is < 150°F 150°F at turning turning gear speed. speed. 3. Verify Water Wash Drain Drain tank has room room for wash water. water. 4. Verify that the Off Off Line Water Water Wash procedure and inplant clearance have have been completed. 5. Use GE drawings drawings 352b4351 352b4351 , P&ID P&ID M605 , GE GE TIL 1236-2 ,GEK ,GEK 107122A 107122A , for for more detailed information.
1
LOCATION
PROCEDURE NUMBER
FT MYERS PLANT COMBUSTION TURBINE CT OFFLINE WATER WASH VALVING & TAG-OUT PROCEDURE
COMBUSTION TURBINE-004 REV. N
DATE 10/26/00
2 OF 18
GENERAL PROCEDURE Valve Line up for Off-Line Water Wash Water Wash Skid House 1a 1c
1b
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 12 Hours to reach 180°F. ________ d) Verify that the Water Wash Drain Tank (3000 gal capacity) has enough 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 alarm At 2250 gallons and a high/high alarm at 2700 gallons.
________
2
LOCATION
PROCEDURE NUMBER
FT MYERS PLANT COMBUSTION TURBINE CT OFFLINE WATER WASH VALVING & TAG-OUT PROCEDURE
COMBUSTION TURBINE-004 REV. N
DATE 10/26/00
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.
________
2
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 will contain 450 psi gas. Be careful when venting.
BP
Vent S
3
LOCATION
PROCEDURE NUMBER
FT MYERS PLANT COMBUSTION TURBINE CT OFFLINE WATER WASH VALVING & TAG-OUT PROCEDURE
COMBUSTION TURBINE-004 REV. N
DATE 10/26/00
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. _________
4
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 ball valves (WW-1 & WW-3 ) on the drain header that are attached to 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 isolation valve from going undetected. This would prevent the drain header from leaking into the CT compartment.
WW1
4
_________ _________
LOCATION
PROCEDURE NUMBER
COMBUSTION TURBINE-004
FT MYERS PLANT COMBUSTION TURBINE CT OFFLINE WATER WASH VALVING & TAG-OUT PROCEDURE
REV. N
DATE 10/26/00
5 OF 18
WW2
WW3
Inside CT compartment 7. Close and Tag the East Side 9 th and 13th stage extraction isolation valves. (WW-4 & WW-6) _________ 8. Open and Tag the Drain valves. (WW-5 & WW-7) th
9 Stage
_________ 13th Stage
WW7
WW4 WW6
WW5
9. Close and Tag the West Side 9 th and 13th stage extraction isolation valves. (WW-8 & WW-10)
_________
10. Open and Tag the Drain valves. (WW-9 & WW-11)
_________
WW8 WW10 WW9
WW11
5
LOCATION
PROCEDURE NUMBER
FT MYERS PLANT COMBUSTION TURBINE CT OFFLINE WATER WASH VALVING & TAG-OUT PROCEDURE
COMBUSTION TURBINE-004 REV. N
DATE 10/26/00
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)
WW12
________ ________
WW13
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 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 be disconnected at the elbow to allow water to drain that may leak by the isolation valve.
East surge
WW14
6
_________
LOCATION
PROCEDURE NUMBER
COMBUSTION TURBINE-004
FT MYERS PLANT
REV. N
COMBUSTION TURBINE CT OFFLINE WATER WASH VALVING & 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 .
_________
WW15
East side of the CT Compartment 15. Close and Tag Compressor Bleed Heat manual isolation valve (WW-20)
WW20
7
_________
LOCATION
PROCEDURE NUMBER
FT MYERS PLANT COMBUSTION TURBINE CT OFFLINE WATER WASH VALVING & TAG-OUT PROCEDURE
COMBUSTION TURBINE-004 REV. N
DATE 10/26/00
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
_________
LOCATION
PROCEDURE NUMBER
COMBUSTION TURBINE-004
FT MYERS PLANT COMBUSTION TURBINE CT OFFLINE WATER WASH VALVING & TAG-OUT
REV. N
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)
_________
WW26
WW27
WW28
20. Open and Tag Exhaust Diffuser Duct 8” drain valve. (WW-29)
9
_________
LOCATION
PROCEDURE NUMBER
COMBUSTION TURBINE-004
FT MYERS PLANT
REV. N
COMBUSTION TURBINE CT OFFLINE WATER WASH VALVING & TAG-OUT PROCEDURE
DATE 10/26/00
10 OF 18
WW29
East side of PEECC 21. Open and Tag 13th stage extraction drain valve (WW-30).
_________
th
13 stage drain
22. Open and Tag CT Inlet Plenum drain valve (WW-31).
10
_________
LOCATION
PROCEDURE NUMBER
COMBUSTION TURBINE-004
FT MYERS PLANT COMBUSTION TURBINE CT OFFLINE WATER WASH VALVING & TAG-OUT PROCEDURE
REV. N
DATE 10/26/00
11 OF 18
WW31
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)
WW33
WW32
25.With all the low point drains opened and tagged, the last step before 11
_________
LOCATION
PROCEDURE NUMBER
COMBUSTION TURBINE-004
FT MYERS PLANT COMBUSTION TURBINE CT OFFLINE WATER WASH VALVING & TAG-OUT PROCEDURE
REV. N
DATE 10/26/00
12 OF 18
releasing the clearance on the LCI is to set both exhaust frame blowers to the HAND position. Note: The corresponding switches are located on the 480v breakers (MCC) in the PEECC Skids.
_________
24
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
_________
WW 3
WW S/V
12
LOCATION
PROCEDURE NUMBER
FT MYERS PLANT COMBUSTION TURBINE CT OFFLINE WATER WASH VALVING & TAG-OUT PROCEDURE
COMBUSTION TURBINE-004 REV. N
DATE 10/26/00
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 12 Hours to reach 180°F. _________ d. Verify that the Water Wash Drain Tank (3000 gal capacity) has enough 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 alarm At 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
PROCEDURE NUMBER
FT MYERS PLANT COMBUSTION TURBINE CT OFFLINE WATER WASH VALVING & TAG-OUT PROCEDURE
COMBUSTION TURBINE-004 REV. N
DATE 10/26/00
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 ball valves (WW-1 & WW-3 ) on the drain header that are attached to 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 used as 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 9 th 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 9 th 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
PROCEDURE NUMBER
COMBUSTION TURBINE-004
FT MYERS PLANT COMBUSTION TURBINE CT OFFLINE WATER WASH VALVING & TAG-OUT
REV. N
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 be disconnected 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
PROCEDURE NUMBER
FT MYERS PLANT COMBUSTION TURBINE CT OFFLINE WATER WASH VALVING & TAG-OUT PROCEDURE
COMBUSTION TURBINE-004 REV. N
DATE 10/26/00
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 blowers to the HAND position. Note: The corresponding switches are located on the 480v breakers (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 The following tags are inside the CT compartment Combustion Chamber Header Drain Valve Combustion Chamber Vent Valve Combustion Chamber Header Drain Valve East 9th Stage Extraction Valve East 9th Stage Extraction Drain Valve East 13th Stage Extraction Valve East 13th Stage Extraction Drain Valve
Tag No.
Wash Position
Normal Position
1
Open
Closed
2
Closed
Open
3
Open
Closed
4 5
Closed Open
Open Closed
6 7
Closed Open
Open Closed
16
LOCATION
PROCEDURE NUMBER
FT MYERS PLANT COMBUSTION TURBINE CT OFFLINE WATER WASH VALVING & TAG-OUT PROCEDURE West 9th Stage Extraction Valve West 9th Stage Extraction Drain Valve West 13th Stage Extraction Valve West 13th Stage Extraction Drain Valve Lower Turbine Manway Drain Atomizing Air Header Drain Valve Compressor Bleed Control Air (Between 8th and 8th can) Compressor Bleed Heat Drain Valve Gas Header PM-1 Drain (Flange) Gas Header PM-2 Drain (Flange) Gas Header PM-3 Drain (Flange) Gas Header PM-4 Drain (Flange) Bleed Heat Manual Isolation Valve
COMBUSTION TURBINE-004 REV. N
DATE 10/26/00
17 OF 18
8 9
Closed Open
Open Closed
10 11
Closed Open
Open Closed
12 13 14
Open Open Closed
15
Open
Closed Closed Open SEE NOTE 1 Closed
16
Remove Flange
Replace Flange
17
Remove Flange
Replace Flange
18
Remove Flange
Replace Flange
19
Remove Flange
Replace Flange
20
Closed
Open
The following tags are located on the East side of CT, outside the CT compartment Bleed Heat Drain Valve 21 Open Closed East 9th Stage Extraction 22 Open Closed Drain Valve Atomizing Air Drain Valve 23 Open Closed East 13th Stage Extraction 24 Open Closed Drain Valve The following tags are located on the west side of CT compartment West 9th Stage Extraction 25 Open Drain Valve False Fire Drain Valve 26 Open Exhaust Frame Vertical Joint 27 Open Drain Valve (South Drain) Exhaust Frame Vertical Joint 28 Open Drain Valve (North Drain) Exhaust Diffuser Duct Drain 29 Open (8-inch drain)
Closed Closed Closed Closed Closed
The following tags are located on the northwest side of CT compartment (under Inlet Plenum)
17
LOCATION
PROCEDURE NUMBER
FT MYERS PLANT COMBUSTION TURBINE CT OFFLINE WATER WASH VALVING & TAG-OUT PROCEDURE West 13th Stage Extraction Drain Valve Inlet Plenum Drain Valve Water Wash 3-way valve
COMBUSTION TURBINE-004 REV. N
DATE 10/26/00
18 OF 18
30
Open
Closed
31
Open B/C
Closed
The following tags are located inside CT compartment East Atomizing Air Supply Line 32 Remove & Tag Elbow Drain Plug West Atomizing Air Supply Line 33 Remove & Tag Elbow Drain Plug Exhaust Frame Blowers Manual Note: When placed in Manual the Exhaust Frame Blowers will start.
Replace Replace
Auto
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
