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Flashcards in Circ Water Deck (7)
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1
Q

What are the requirements of traveling screen operation when starting Circ Water System?

A

Must be Operable for U2/3 CW Pumps to be started
If iced - must be oeprated in manual
Failure of spray wash requires immediate correcting action and possibly CW Pp Shutdown
OPERATION WITHOU TRAVEL SCREEN OPERABLE WILL DESTROY SCREEN W/IN 8 HOURS if river debris high

2
Q

What are symptoms of Main Condenser Tube Leak

A

Rising Hotwell Effluent Conductivity

Condensate Pump Discharge Magnesium or Sulfate Rise

3
Q

What verifies Condenser Water Box Doors Closed?

A

Pre-Op Checks - Inspections bolted and leakage.

If leaking, notify MCR immediately

4
Q

Vacuum limitations prior to initiating Flow Reversal?

A

If Vacuum <25.5 inHg on lowest section AND/OR 26.5inHg on highest section WHEN Rx Press >600psig
Has impact on sensing lines and has potential to drop vacuum to SCRAM setpoint

5
Q

Why is a second flow reversal undesirable when there is no equipment malfunction?

A

May scram on low vacuum due to vacuum transient

6
Q

What are the corrective actions if breaker trips during flow reversal?

A

Direct Operator at MCC to reset breaker
If same breaker trips AGAIN, then place switch to return flow to original direction and notify Shift Manager
Drect Operator to reset breaker

7
Q

What are the actions required if the CW Pump Discharge Valve fails to close after CW Pp securing?

A

Pump will spin backwards and CW Flow will short circuit. May damage pump and reduce vacuum.
REQUIRED TO MANUALLY CLOSE VALVE