City of Tallahassee
Power Plant Operator
Job Performance Measure
Plant Operator
Hopkins Seal Oil and Hydrogen System TH-HOP-14
Performance Measure: Seal Oil and Hydrogen System
Name:
All Parts Satisfactorily Completed:
(Examiner’s Signature)
(Date)
Supervisor’s Comments: _______________________________________________________
____________________________________________________________________________
____________________________________________________________________________
____________________________________________________________________________
References:
1.
Training Seal Oil and Hydrogen System TH-HOP-14
Materials Needed:
1.
Pencil
2.
System Description – Seal Oil and Hydrogen System TH-HOP-14-SD
3.
System Operating Procedure – Seal Oil and Hydrogen System TH-HOP-14-SOP
4.
Associated Operator Route Check List
Safety/Environmental:
1.
Wear hard hats, safety glasses, safety toe shoes, and ear plugs as required.
2.
Discuss safety and environmental hazards associated with operating the system.
3.
Discuss any unusual operating conditions associated with the system.
Note: Always observe all plant safety rules in accordance with City of Tallahassee Safety and
Health Procedures and all Federal, State and/or Local OSHA Standards.
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Page 1
City of Tallahassee
Power Plant Operator
Job Performance Measure
Plant Operator
Hopkins Seal Oil and Hydrogen System TH-HOP-14
Part A: Location of System Components
Conduct a walkthrough of the Seal Oil and Hydrogen System.
Locate, identify, and describe the operational function of the components listed below for the
Seal Oil and Hydrogen System:
1. Generator Shaft Seals
2. Air Side Seal Oil Pump
3. Turbine Lube Oil Backup Control Valves
4. Air Side Seal Oil Backup Pump
5. Hydrogen Side Seal Oil Pump
6. Seal Oil Coolers
7. Hydrogen Side Drain Regulator
8. Generator Bearing Drain (Loop Seal) Tank
9. Generator Bearing Oil Drain Line Vapor Extractor
10. Hydrogen Bulk Storage and Supply Manifold
11. Carbon Dioxide Storage and Supply Manifold
12. Hydrogen Distribution Tube
13. Carbon Dioxide Distribution Tube
14. Hydrogen Monitoring System
15. Gas Dryer
Satisfactorily Completed __________________________________
Draft
Page 2
City of Tallahassee
Power Plant Operator
Job Performance Measure
Plant Operator
Hopkins Seal Oil and Hydrogen System TH-HOP-14
Part B: Location of Local Control Panels and Breakers
Conduct a walkthrough of the Steam Turbine System. Locate, identify and describe the
operational function of the Steam Turbine System local control panels and breakers.
Generator Control Panel
Lube Oil Conditioner Hydrogen Control Panel
Satisfactorily Completed _________________________________________
Part C: Replace Generator Air with Carbon Dioxide
Using the following steps, demonstrate how to replace air in the generator with carbon dioxide.
Explain your actions at each step.
Explain Your Actions
1.
VERIFY all gas system valves are
aligned.
L
2.
DISCONNECT the hydrogen supply
line removable link.
L
3.
PLACE blank on link flanges.
L
4.
CLOSE valves 1, 3, 8, and 50.
L
5
OPEN valves 2, 4, 5, and 7.
L
6.
OPEN CO2 bottle supply valves.
L
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Page 3
City of Tallahassee
Power Plant Operator
Job Performance Measure
Plant Operator
Hopkins Seal Oil and Hydrogen System TH-HOP-14
7.
OPEN valve 60.
L
8.
VERIFY carbon dioxide pressure on
bottle header gauge.
L
VERIFY the purity meter on the
Hydrogen Control Panel goes to 95%
or greater CO2.
10. CLOSE CO2 bottle supply valves.
L
11. CLOSE valve 60.
L
12. CLOSE valves 2, 4, 5, and 7.
L
13. OPEN valves 1 and 3.
L
9.
L
Part D: Replace Generator Carbon Dioxide with Hydrogen
Using the following steps, demonstrate how to replace air in the generator with carbon dioxide.
Explain your actions at each step.
Explain Your Actions
1.
REMOVE the hydrogen supply line
removable link blanks.
L
2.
REPLACE the hydrogen supply line
removable link.
L
3.
OPEN valves 6, 8, and 53.
L
4.
OPEN valve 50.
L
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Page 4
City of Tallahassee
Power Plant Operator
Job Performance Measure
Plant Operator
Hopkins Seal Oil and Hydrogen System TH-HOP-14
5
ADJUST hydrogen pressure regulator
to supply 60 psig hydrogen.
L
6.
VERIFY the purity meter value reads
95% or greater hydrogen.
L
7.
CLOSE valve 6.
L
8.
OPEN valve 24 for 2 minutes and then
CLOSE valve.
L
9.
ADJUST the hydrogen regulator as
required to maintain the proper
hydrogen pressure.
10. RESTART the hydrogen side seal oil
pump..
L
L
Part E: Place the Generator Seal Oil System in Service
Using the following steps, demonstrate how to place the generator seal oil system in service.
Explain your actions at each step.
Explain Your Actions
1.
VERIFY electrical lineup.
L
2.
VERIFY the seal oil system valves are
aligned.
L
3.
CLOSE turbine lube oil backup supply
valves.
L
4.
START the air side seal oil pump.
L
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Page 5
City of Tallahassee
Power Plant Operator
Job Performance Measure
Plant Operator
Hopkins Seal Oil and Hydrogen System TH-HOP-14
5
VERIFY hydrogen side drain
regulator level increases.
L
6.
VERIFY hydrogen side drain
regulator level is maintained by drain
and fill valves.
L
7.
CLOSE the air side seal oil outlet
valve.
L
8.
ADJUST the air side seal oil pump
relief valve until the pressure indicator
reads 100 psig.
OPEN the air side seal oil outlet valve.
L
10. ADJUST the differential pressure
regulator to bring air side seal oil
pressure to 12 psig above gas pressure.
11 START the hydrogen side seal oil
pump.
L
12. CLOSE the hydrogen side seal oil
valves.
L
13. CLOSE the hydrogen side seal oil
recirc valve.
L
14. ADJUST the hydrogen side seal oil
pump relief valve until the pressure
indicator reads 100 psig.
15. OPEN the hydrogen side seal oil
valves.
L
16. ADJUST the regulating valves until
the associated pressure gauges read ±
2” H2O.
17. ADJUST the backup main oil pressure
regulating valve to a 125 psig outlet.
L
9.
Draft
L
L
L
L
Page 6
City of Tallahassee
Power Plant Operator
Job Performance Measure
Plant Operator
Hopkins Seal Oil and Hydrogen System TH-HOP-14
18. OPEN the turbine oil backup supply
valves.
L
19. STOP the air side seal oil pump.
L
20. ADJUST the backup supply regulator
to maintain the seal oil supply at 8 psig
above hydrogen pressure.
21. RESTART the air side seal oil pump.
L
22. OPEN pressure switch PS-8 test valve.
L
23. When pressure on the associate
indicator reaches 5 psi, VERIFY the
air side seal oil backup pump starts.
24. CLOSE the pressure switch PS-8 test
valve.
L
25. STOP the air side seal oil backup
pump.
L
26. STOP the hydrogen side seal oil
pump.
L
27. VERIFY the HYDROGEN SIDE
SEAL OIL PUMP OFF alarm at the
Hydrogen Control Panel.
28. RESTART the hydrogen side seal oil
pump.
L
L
L
L
Part E: Remove the Seal Oil System from Service
Using the following steps, demonstrate how to shut down the generator. Explain your actions at
each step.
Explain Your Actions
Draft
Page 7
City of Tallahassee
Power Plant Operator
Job Performance Measure
Plant Operator
Hopkins Seal Oil and Hydrogen System TH-HOP-14
1.
VERIFY the seal oil system is no
longer required for service.
L
2.
STOP the hydrogen side seal oil
pump.
L
3.
STOP the air side seal oil pump.
L
4.
When pressure on associate indicator
reaches 5 psi, VERIFY the air side
seal oil backup pump starts.
L
5
STOP the air side seal oil pump.
L
6.
CLOSE turbine seal oil backup supply
valves 263 and 265.
L
7.
VERIFY the seal oil pressure decrease
to 0.
L
8.
CLOSE condensate cooling water
valves to and from seal oil coolers.
L
9.
STOP the generator seal oil vapor
extractor.
L
ALARM CONDITIONS
Alarms
Initiating
Device(s)
Control Room (BTG) Alarms
Hydrogen Annunciator Panel Alarm
Hydrogen Panel
Hydrogen Control Panel
Hydrogen Purity High/Low
Purity Meter
Hydrogen Pressure High
Hydrogen
Pressure
Transmitter
Hydrogen Supply Pressure Low
PS-3
Water Detector High
ASH614A/B/C
Hydrogen Temperature High
n/a
Draft
Device
Setpoint(s
Page 8
City of Tallahassee
Power Plant Operator
Job Performance Measure
Plant Operator
Defoaming Tank Level High
Air Side Seal Oil Pump Off
Seal Oil Pressure Low
Hydrogen Side Level Low
Seal Oil Turbine Backup Pressure Low
Hydrogen Side Seal Oil Pump Off
Air Side Seal Oil Backup Pump Running
Hopkins Seal Oil and Hydrogen System TH-HOP-14
LS-6
PDS-7
PDS-8
LS-9
PS-10
PDS-11
Satisfactorily Completed ______________________________________________
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