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7 Cards in this Set
- Front
- Back
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Which loads are common to NK01 and NK04? A. The associated Emergency Diesel Generators field flashing.B. The associated train's Turbine driven AFW Pump steam supply valve. C. The associated train's Main Steam Isolation valves.D. Main Generator output breaker control circuitry.
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A
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Why is a loss of 125 VDC bus NK01 or NK04 more significant than a loss of 125 VDC bus NK02 or NK03 during a loss of ALL AC power? A. Diesel Generator field flashing is lost.B. VCT suction shifts to the RWST.C. The RCP overload trip is lost.D. MSIVs will not close.
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A
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What is an available power supply to bus NN04? A. NK01 through Inverter NN11.B. NK02 through Inverter NN12.C. 'SOLA' Transformer from NG04A.D. 'SOLA' Transformer from NG02A.
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D
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If an Instrument AC Power (NN) inverter fails, how can the bus be re-energized without the inverter? A. An automatic bus transfer from another NN inverter.B. A key-interlock controlled SOLA transformer.C. A backup battery bank.D. Cross-connection to the other associated NN bus.
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B
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The backup source breakers to the 120 VAC NN buses are key interlocked, with ONLY ONE KEY per interlock.What does this arrangement prevent? A. one breaker from feeding more than one load.B. supplying both of the associated NN instrument buses at the same time.C. excessive loading of the breaker.D. the backup source from simultaneously supplying safety and non-safety related loads.
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B
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The plant is at 100% power when AC power on charger NK21 trips and cannot be reset. All other NK equipment is operable.What, if any, are the required actions? A. Restore charger NK21 to operable withing two hours or be in Hot Standby within the following six hours.B. Place charger NK25 in service supplying NK01 powered from NG01 within two hours and no further action is required.C. Place charger NK25 in service supplying NK01 and powered from NG01 within two hours and restore charger NK21 to operable in the next six hours or be in Hot Standby within the following six hours.D. No action is required provided the NK bus voltage remains above 130.2 volts.
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B
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The unit is at 100% RTP.Performing SR 3.8.6.1 on Division 1 batteries, electrolyte level of one of the pilot cells is below the minimum level indication mark but above the top of the plates.What is a required TS Action? A. Restore Battery Cell Parameter LCO within 24 hours.B. Verify float voltage of pilot cells is above Battery Cell Parameter Category C limits within 1 hour.C. Verify electrolyte level of pilot cells is above Battery Cell Parameter Category C limits within 24 hours.D. Restore DC electrical power subsystem to OPERABLE within 2 hours.
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B
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