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24 Cards in this Set
- Front
- Back
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What happens when a Lube oil evactor trips on 200 and what should the aux operator do? |
The snuffing steam will trip.
Aux operator will need to connect the venturi to pull a vacuum on the Reservoir. |
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What must be done prior to shutting down 100/200 Oil pumps that were started for pressure switch checks? |
Oil pump must be reset with the button in the P2 control room. |
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At what pressure is the 100/200 Aux LO pump started? |
22 psi. |
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At what oil pressure will 100/200 trip? |
18 psi |
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At what pressure will the 100/200 DC cooling oil pump start? |
15 psi |
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What is the purpose of the torque converter charging oil? |
It hydrodynamically transfers torque from the impeller wheel to the turbine wheel, developing maximum torque to start the gas turbine turning. |
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What does the DC cooling oil pump supply oil to? |
Hot end bearing, TG bearing, torque converter bearing, jacking oil pump. |
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What is the start permissive for oil temperature? |
95° F |
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What is the issue with allowing Lube oil on a GT to get cold? |
It could lead to vibration issues and LO filter collapse. |
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What ways can 100/200 supply seal oil? |
Ac seal oil pump, DC seal oil pump, 225# power oil backup, and pump bypass line. |
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What is the purpose of the jacking oil pump? |
To lift the rotor when the machine is not online. |
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What is the purpose of the thermomix valve? |
It mixes hot and cold oil to achieve the correct oil temperature. |
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If there is oil on the ground near the chemical feed tanks what would likely be the cause? |
The vacuum on the Lube oil Reservoir is to high and should be adjusted. |
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What is the purpose of the seal oil float trap? |
To liberate H2 from the oil prior to allowing it Back to the loop seal. |
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When lining up a centrifuge, what should be opened first? The suction or the discharge and why? |
The discharge should be opened first, the pump should be primed using water, and the suction should be opened. This is to prevent the centrifuge from spilling oil. |
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What is the purpose of the seal oil differential pressure regulator? |
Maintain seal oil pressure 5 - 7 psi higher than generator pressure. |
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What is the normal Lube oil pressure on GT 100/200? |
30 psi |
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What differential pressure should the Lube oil filters be swapped? |
20 psi |
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Why shouldn't Teflon tape be used on an oil system? |
Pieces can plug pilot valves and cause equipment upsets or damage. |
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What does 225# power oil supply? |
Seal oil backup Torque converter Modulating clutch Gas cabinet valves |
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What does the 110# Power oil system supply? |
Over speed trip Gas cabinet Compressor bleed valves (oil to air relays) |
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At what pressure will the will the aux power oil pump start? |
200 psi |
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At what pressure will the seal oil low pressure alarm come in? |
40 psi |
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At what pressure will the DC seal oil pump start? |
35 psi |
