Term
Recirc Flow
Describe the drive motor power supply. |
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Definition
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Term
Recirc Flow
Describe the recircflow controller rate limitations. |
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Definition
-Limits increases to < or equal to 2%/sec.
-Limits decreases to < or equal to 2.5%/sec. |
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Term
Recirc Flow
Describe the recirc pump speed limits and reason. |
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Definition
-Equal or < to 30% until FW flow > 20% and discharge valve full open.
-For NPSH. |
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Term
Recirc Flow
Describe the recirc runbacks. |
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Definition
-With steam flow > 55.4% and both pumps running and a FW or condensate pump trip runback to 45% resets at 50.7% steam flow.
-FW flow <20% for 15 secs runback to 30%.
-Disch valve <90% at 66secs runback to 30%. |
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Term
Recirc Flow
Describe the MG set power supplies. |
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Definition
-11 Recirc MG set - 11 bus.
-12 Recirc MG set - 12 bus. |
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Term
Recirc Flow
Describe teh AC lube oil pumps power supplies. |
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Definition
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Term
Recirc Flow
Describe the recirc valves power supply. |
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Definition
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Term
Recirc Flow
Describe the initial exciter field flash power supply. |
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Definition
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Term
Recirc Flow
Describe the DC lube oil pump power supply. |
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Definition
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Term
Recirc Flow
Describe the requirements to restart a recirc pump at power. |
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Definition
-Running pump <50%.
-Idle loop w/in 50F of coolant temp.
-Bottom head w/in 145F of upper head. |
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Term
Recirc Flow
Describe the limitations with temp stratification. |
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Definition
| -Recirc flow shall not be increased unless coolant delta T top to bottom is <145F. |
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