CPCs Flashcards
Unit 1 is at 100% power with all systems in a normal lineup.
Power is lost to PNC-D27.
What is the effect of this failure on Channel ‘A’ of CPC?
A. CEAC 1A loses 22 RSPT indications
B. CEAC 1A loses 67 RSPT indications
C. CEAC 2A loses 22 RSPT indications
D. CEAC 2A loses 67 RSPT indications
D
Unit 1 is at 100% power with all systems in a normal lineup.
Power is lost to PND-D28.
What is the effect of this failure on Channel ‘A’ of CPC?
A. CEAC 1A loses 22 RSPT indications
B. CEAC 1A loses 67 RSPT indications
C. CEAC 2A loses 22 RSPT indications
D. CEAC 2A loses 67 RSPT indications
C
Unit 1 is at 100% power with all systems in a normal lineup.
CEA 14 slips to 75” withdrawn.
CEA 14 is a Regulating Group 5 CEA in quadrant D.
What is the expected CPC response?
A. All CPCs will trip based on deviation within a subgroup as sensed by each CEAC..
B. All CPCs will trip based on subgroup deviation as sensed by each CPC.
C. All CPCs will receive a penalty factor based on deviation within a subgroup as sensed by each CEAC, but it will be insufficient to cause a channel trip.
D. Channel D CPC only will trip based on subgroup deviation. The other three channels will receive no indication of an error from their CEACs.
C
Unit 2 is at 100% power with all systems in a normal lineup.
CEA 87 slips to 75” withdrawn.
CEA 87 is a Regulating Group 4 CEA in quadrant B.
What is the expected CPC response?
A. CEACs 1B and 2B ONLY determine there is a deviation within a subgroup. ONLY CPC B receives a penalty factor from its CEACs that cause it to trip.
B. All CEACs will determine there is a deviation within a subgroup. The penalty factor it develops is sufficient to trip all four CPCs.
C. Since regulating group 4 has only 4 fingered CEAs, all penalty factors developed by CPCs and CEACs will be 1. No CPCs will trip.
D. CPC B develops penalty factors for CEAs out of sequence and subgroup deviation. ONLY CPC B will trip.
D
What determines when the CPCs will shift from a fixed power distribution without radial peaking factors, to a live distribution with peaking factors, when calculating the ASI used for an aux trip?
A. When all three ex-core NIs exceed 17%.
B. When the highest ex-core NI exceeds 17%.
C. When the sum of all three ex-core NIs exceed 51%.
D. When the sum of all three ex-core NIs exceed 45%.
C
The CPC trip setpoint for DNBR is \_\_\_(1)\_\_\_. The CPC trip setpoint for LPD is \_\_\_(2)\_\_\_. A. (1) 1.34; (2) 21 kw/ft B. (1) 1.40; (2) 21 kw/ft C. (1) 1.34; (2) 13.1 kw/ft D. (1) 1.40; (2) 13.1 kw/ft
A
Unit 2 is at 100% power with all systems in a normal lineup.
CEA 5 slips to 75” withdrawn.
CEA 5 is a 12 fingered Regulating Group 3 CEA in quadrant C.
What is the expected CPC response?
A. CEACs 1C and 2C ONLY determine there is a deviation within a subgroup. ONLY CPC C receives a penalty factor from its CEACs that cause it to trip.
B. All CEACs will determine there is a deviation within a subgroup. The penalty factor each CEAC develops is sufficient to trip all four CPCs.
C. All CPCs will individually determine CEAs are both out of sequence and have a subgroup deviation, and all four CPCs will trip. Since this is a regulating group CEA, the penalty factor sent by each CEAC will be 1.
D. CPC C develops penalty factors for CEAs out of sequence and subgroup deviation. ONLY CPC C will trip.
B
