ESFAS

Question 1

Given the following plant conditions: Unit 3 has received a LOP on PBA-S03. The control operator notices that the Train ‘A’ Spray Pond pump has a blue SESS alarm. This alarm tells the operator that the Train A Spray Pond pump …..

A. is in the proper position for the current actuation.
B. pump has lost control power.
C. has tripped due to an 86 Lockout.
D. was called upon to start but did not start.

Answer 1

Answer: D

Question 2

Given the following conditions: The unit is operating at rated power. A loss of PNA-D25 occurs. What impact (if any) will this loss have on BOP ESFAS?

A. Nothing will actuate or become non-functional solely due to the power loss.
B. Train ‘A’ CREFAS, CPIAS and FBEVAS actuations ONLY.
C. Train ‘A’ BOP ESFAS will become de-energized and not function.
D. Train ‘A’ and ‘B’ CPIAS, CREFAS, and FBEVAS will actuate.

Answer 2

Answer: D

Question 3

You are investigating a trip of FBEVAS at the BOP ESFAS cabinets. The following lights are illuminated on the Train “A” FBEVAS module: The TRIP and RESET halves of the TRIP/RESET pushbutton. The ACTUATE of the ACTUATE/MAN/RST button. Based upon these indication, this train of FBEVAS has tripped due to…

A. a manual actuation from B05.
B. RU-31 (Fuel Building) exceeding the trip setpoint and subsequently decreasing below this setpoint.
C. a manual actuation from BOP ESFAS Cabinet.
D. RU-31 (Fuel Building) exceeding its trip setpoint and remaining above this value.

Answer 3

Answer: B

Question 4

Which of the following signals does NOT directly result in a start of a Spray Pond pump?

A. LOP
B. CIAS
C. SIAS
D. CREFAS

Answer 4

Answer: B

Question 5

Which of the following describes the BOP ESFAS power supply arrangement? Each cabinet receives power from its associated train of…

A. PK and PN, which is auctioneered so that a loss of either supply to the cabinet does not impact the operation of the system.
B. PK ONLY. A loss of this power supply to the cabinet will cause an actuation of the components controlled by that train of BOP ESFAS.
C. PN ONLY. A loss of this power supply to the cabinet will cause an actuation of the components controlled by that train of BOP ESFAS.
D. PK and PN. A loss of either power supply to the cabinet will prevent those components controlled by the affected BOP ESFAS cabinet from actuating when needed.

Answer 5

Answer: A

Question 6

What impact would depressing the AFAS 1 TEST push button on the Train B BOP ESFAS Load Sequencer module have on the AFAS?

A. AFA and AFB would start, associated feed valves would remain closed.
B. AFB would start, all associated feed valves would open.
C. AFA and AFB would start, all associated feed valves will open.
D. AFB would start, associated feed valves would remain closed.

Answer 6

Answer: D

Question 7

What impact would depressing the SIAS/CSAS TEST push button on the Train “A” BOP ESFAS Load Sequencer module have on the Safety Injection system?

A. Both Train A and B HPSI, LPSI and CS pumps would start, no injection valves open.
B. The Train A HPSI, LPSI, and CS pumps would start and all injection valves would open.
C. The Train A HPSI, LPSI, and CS pumps would start, no injection valves open.
D. Both Train A and B HPSI, LPSI, and CS Pumps would start and all injection valves would open.

Answer 7

Answer: C

Question 8

Which of the following signals will cause an EDG start to occur?

A. CIAS
B. RAS
C. CSAS
D. MSIS

Answer 8

Answer: C

Question 9

You are investigating a trip of CPIAS ‘A’ at the BOP ESFAS cabinets. The following lights are illuminated on the Train ‘A’ CPIAS module: Both the TRIP and RESET halves of the TRIP/RESET button. The ACTUATE half of the ACTUATE/MAN/RST button. Based upon these indications, which one of the following has caused this trip?

A. High radiation signal from RU-37 (Power Access Purge Monitor ‘A’) which has subsequently cleared.
B. Cross train trip signal.
C. Manual actuation from B05.
D. High radiation signal from RU-37 (Power Access Purge Monitor ‘A’) which is still above its trip setpoint.

Answer 9

Answer: A

Question 10

Given the following conditions: The unit is operating at rated power. A loss of PNC-D27 occurs. What impact (if any) will this loss have on BOP ESFAS?

A. Train “A” and “B” CPIAS, CREFAS, and FBEVAS will actuate.
B. Train “A” CPIAS, CREFAS and FBEVAS actuations only.
C. Nothing will actuate or become non-functional due to the power loss.
D. Train “A” BOP ESFAS will become deenergized and not function.

Answer 10

Answer: C

Question 11

Given the following initial conditions: Reactor has tripped. Standard Post Trip Actions are complete. SIAS/CIAS/MSIS. Steam Generator #2 has a tube rupture. Steam Generator #2 has a stuck open Steam Generator Safety Valve. Pressurizer level is 0. SG#1 level is 40% WR and decreasing. SG#2 level is 30% NR and increasing slowly. Which of the following represents an appropriate Feedwater configuration?

A. Feed SG#1 only at approximately 500 gpm.
B. Feed both SGs approximately 250 gpm.
C. Feed SG#2 only at 1360 to 1600 gpm.
D. Feed SG#2 only at approximately 500 gpm.

Answer 11

Answer: C

Question 12

Which of then following signals will result in a start of a Spray Pond pump if initiated from B05?

A. RAS
B. CREFAS
C. CIAS
D. FBEVAS

Answer 12

Answer: B

Question 13

Given the following conditions: Unit at 50% power. PNC-D27, 120 VAC distribution panel, loses power. All systems operate as designed. WHICH ONE of the following describes the expected response of the Reactor Protection and BOP-ESFAS Systems?

A. Reactor trip and all ESFAS and BOP-ESFAS actuations.
B. Initiation relays deenergize on PPS Channel’s A & C and no BOP ESFAS actuations.
C. CREFAS, CPIAS, and FBEVAS Train actuations and initiation relays deenergize on Channels A and C.
D. CREFAS, CPIAS, and FBEVAS Train actuations and initiation relays deenergize on Channels C and D.

Answer 13

Answer: B

Question 14

Choose the statement below which describes the plant response if the TEST pushbutton is depressed on the Train “A” FBEVAS module on the BOP ESFAS cabinet.

A. Actuation of Train A FBEVAS and Train A CREFAS ONLY.
B. Actuation of Train A FBEVAS ONLY.
C. Actuation of Train A and B FBEVAS ONLY.
D. Complete actuation of FBEVAS and CREFAS.

Answer 14

Answer: D

Question 15

Given the following conditions: Unit 2 is operating at rated power. Because of a suspected problem, the Train B Loss of Power (LOP)/Load Shed (LS) relays are all bypassed. While the crew is looking into the Technical Specifications, a loss of off-site power occurs. Assuming no operator action, how would the electrical distribution system look after the electric plant transient is stabilize?

A. PBB-S04 energized by Diesel Generator
B. PBB-S04 de-energized, Diesel Generator never received a start signal.
C. PBA-S03 de-energized, Diesel Generator running unloaded.
D. PBA-S03 de-energized, Diesel Generator tripped on high temperature.

Answer 15

Answer: B

Question 16

If a SIAS is manually initiated from B05 and the”A” load sequencer fails to operate, which of the following pieces of equipment would fail to go to their SIAS position?

1. “A” HPSI pump
2. “A” CS pump
3. “A” HPSI injection valves

A. 3 ONLY.
B. 1, 2 and 3.
C. 1 and 3 ONLY.
D. 1 and 2 ONLY.

Answer 16

Answer: D

Question 17

Given the following conditions: The unit is operating at rated power. The DC supply breaker to Train “A” BOB ESFAS cabinet trips. What, if anything, occurs as a result of this failure?

A. The lights on BOP-ESFAS train will flash, indicating that an error has been detected.
B. Full actuation of Train “A”.
C. Full actuation of Train “A”, with appropriate cross trips to Train “B”.
D. This failure should have no impact.

Answer 17

Answer: D

Question 18

Given the following conditions: Unit is operating at rated power. CREFAS Train “A” is in BYPASS. RU-31 (Fuel Pool Area Monitor) fails HIGH. Which of the following describes the expected plant response?

A. Both Trains of FBEVAS and both Trains of CREFAS actuate.
B. Train A FBEVAS actuates ONLY.
C. No actions should occur due to this signal failure.
D. Both Trains of FBEVAS and Train “B” of CREFAS actuate.

Answer 18

Answer: A

Question 19

Given the following plant conditions:
Unit 1 is operating in Mode 5 with SDC in service. The ‘A’ LPSI pump is operating. An inadvertent Train ‘A’ RAS occurs. Based on these conditions, what actions, if any, are necessary to maintain and/or restore the plant to a stable condition?

A. Override and start the ‘A’ LPSI pump and restore SDC to service.
B. No actions should be necessary, since the RAS is only Train ‘A’.
C. Override and open the LPSI injection valves to restore SDC to service.
D. Override and open the minimum recirc valves to restore minimum flow protection for the ‘A’ LPSI pump.

Answer 19

Answer: A

Question 20

You are investigating a trip of FBEVAS at the BOP ESFAS cabinets. The following lights are illuminated on the Train “A” FBEVAS module: The ACTUATE, MAN and RST of the ACTUATE/MAN/RST button. Based upon these indication, which one of the following has caused this trip?

A. Manual actuation from B05.
B. Cross train trip signal.
C. Manual actuation from BOP ESFAS Cabinet.
D. High radiation signal from RU-31 (Fuel Pool Monitor).

Answer 20

Answer: A

Question 21

A rad monitor trip has caused a FBEVAS to actuate. How can an operator at the BOP-ESFAS cabinets determine that the rad monitor signal has dropped below the FBEVAS setpoint?

A. The TRIP portion of the TRIP/RESET pushbutton will dim but not extinguish.
B. The TRIP portion of the TRIP/RESET pushbutton will extinguish.
C. The RESET portion of the TRIP/RESET pushbutton will illuminate.
D. Both the TRIP and RESET portions of the TRIP/RESET pushbutton will extinguish.

Answer 21

Answer: C

Question 22

Given the following conditions: Unit 1 is operating at rated power. Because of a suspected problem, the Train A Loss of Power (LOP)/Load Shed (LS) relays are all bypassed. While the crew is looking into the Technical Specifications, a loss of off-site power occurs. Assuming no operator action, how would the electrical distribution system look after the electric plant transient is stabilize?

A. PBA-S03 de-energized, Diesel Generator running unloaded.
B. PBA-S03 energized by Diesel Generator
C. PBA-S03 de-energized, Diesel Generator never received a start signal.
D. PBA-S03 de-energized, Diesel Generator tripped on high temperature.

Answer 22

Answer: C

Question 23

Given the following conditions Unit 2 operating at 100% full power. Radiation monitor RU-31, train “A” Fuel Building area monitor, fails high. Train “B” Control Room Essential Filtration Actuation System module is in BYPASS. Fuel Building Essential Filtration (FBEVAS) train “A” actuates. All other systems and components are operating correctly. WHICH ONE of the following states all expected balance of plant engineered safety features actuation(s) in addition to FBEVAS Train “A”?

A. CREFAS Trains “A” and “B”.
B. CREFAS Train “A”.
C. FBEVAS”B” and CREFAS Trains “A” and “B”.
D. FBEVAS Train “B” and CREFAS Train “A”.

Answer 23

Answer: C

Question 24

Unit 1 is operating in Mode 1. The fuses for a bus potential transformer (PT) located in on PBA-S03 blow. The PT supplies undervoltage relays 727-1 and 727-5. Assuming this is the only failure, how will the plant respond?

A. The D/G will start and run unloaded while PBA-S03 remains energized from offsite power.
B. PBA-S03 will load shed, the D/G will start and close in on the bus.
C. PBA-S03 will load shed, the D/G will need to be manually started to re-energize the bus.
D. No actuation should occur.

Answer 24

Answer: D

Question 25

Choose the statement below which describes the plant response if the Train ‘A’ FBEVAS manual switch on B05 is taken to TRIP.

A. Actuation of Train A FBEVAS and Train A CREFAS ONLY.
B. Actuation of Train A and B FBEVAS ONLY.
C. Actuation of Train A FBEVAS ONLY.
D. Complete actuation of FBEVAS and CREFAS.

Answer 25

Answer: C

Question 26

Unit is operating at rated power. CREFAS Train “B” is in BYPASS. Due to a Fuel Handling problem, the operator manually actuates Channel “A” FBEVAS from B05. Which of the following describes the expected plant response?

A. Both Trains of FBEVAS actuate and ONLY Train “A” of CREFAS actuates.
B. Both trains of FBEVAS actuate ONLY.
C. Both trains of FBEVAS and CREFAS actuate.
D. Channel “A” FBEVAS actuates ONLY.

Answer 26

Answer: D

Question 27

Which one of the following will automatically occur when a recirculation actuation signal (RAS) is received?

A. Containment spray header isolation valve will open.
B. Refueling water tank outlet valve will close.
C. Low Pressure Safety Injection pumps will stop.
D. High Pressure Safety Injection pump discharge valve will close.

Answer 27

Answer: C

Question 28

Plant at 100% power. Channels B and D sense a containment pressure of 3.1 psig. Channels A and C are below the trip setpoint. Which ONE of the following will occur?

A. RTCBs B and D open, Train ‘B’ SIAS/CIAS and MSIS
B. Reactor trip, Train ‘B’ SIAS/CIAS and MSIS
C. RTCBs B and D open, full SIAS/CIAS and MSIS
D. Reactor Trip, full SIAS/CIAS and MSIS.

Answer 28

Answer: D

Question 29

The Control Operator (CO) is directed to manually initiate a FBEVAS actuation. The CO operates only the Train “A” FBEVAS switch on B05. The correct resulting actuations on BOP ESFAS are:

A. both Train “A” and Train “B” FBEVAS.
B. only Train “A” FBEVAS and CREFAS.
C. only Train “A” FBEVAS.
D. both Train “A” and Train “B” FBEVAS and CREFAS.

Answer 29

Answer: C

Question 30

Unit 1 is operating at 40% power. The Power Access Purge Unit has been started in preparation of a containment entry. RU-37 (one of the PAPA radiation monitors) fails HIGH. Which of the following describes the ESFAS actuations that result, if any?

A. CPIAS only.
B. CPIAS with a cross trip to CREFAS.
C. CPIAS with a cross trip to FBEVAS.
D. No actuation until RU-38 reaches its HIGH setpoint.

Answer 30

Answer: B

Question 31

Train “A” CPIAS (RU-37) is in bypass. The TRIP and BYPASS lights are lit. Maintenance informs the Control Room that work has been completed and that Train “A” CPIAS can be returned to service. The operator removing RU-37 from bypass, inadvertently turns the bypass key as the first procedure step. Based on these conditions, how will the system respond…

A. Train “A” CPIAS and a Train “A” and “B” CREFAS to actuate.
B. Train “A” and “B” CPIAS and a Train “A” and “B” CREFAS to actuate.
C. TRIP and BYPASS lights to go out as the channel is restored to service.
D. BYPASS light to remain lit, as the channel will not come out of bypass in these conditions.

Answer 31

Answer: B

Question 32

Refueling operations are in progress. A fuel handling incident occurs. RU-37, Power Access Purge Monitor ‘A’ goes into high alarm. WHICH ONE of the following states all of the BOP ESFAS actuations that will occur?

A. FBEVAS and CREFAS
B. CPIAS
C. CPIAS and FBEVAS
D. CPIAS and CREFAS

Answer 32

Answer: D

Question 33

Unit 1 is operating at rated power. An inadvertent Train A CSAS occurs. Based on these conditions, what actions, if any, are necessary to maintain the RCPs operating?

A. No actions should be necessary, since the CSAS is only Train A.
B. Cross-tie Essential Cooling Water with Nuclear Cooling Water.
C. Override and open NCA-UV-402, outside containment isolation valve on the NC return header.
D. Locally open NCA-UV-402, outside containment isolation valve on the NC return header.

Answer 33

Answer: C

Question 34

All of the following ESFAS signals will start a Spray Pond pump EXCEPT:

A. LOP
B. CIAS
C. SIAS
D. CSAS

Answer 34

Answer: B

Question 35

An inadvertent CSAS has occurred. The crew has taken the appropriate actions to close the spray header isolation valve (SIB-UV-671) and stop Containment Spray (CS) Pump “B”. Subsequently a LOP occurs on PBB-S04, followed by a successful EDG “B” start and loading. Which ONE of the following describes the status of Containment Spray Pump “B” and SIB-UV-671?

A. Off with SIB-UV-671 open.
B. Running with SIB-UV-671 open.
C. Off with SIB-UV-671 closed.
D. Running with SIB-UV-671 closed.

Answer 35

Answer: B

Question 36

All RU monitors are on line, operating normally. Channel ‘A’ FBEVAS (RU-31) is bypassed.
Then: RU-145 (Fuel Building Exhaust Monitor) alarms high. Determine whether or not each of the following is actuated by selecting yes or no for each.
FBEVAS A_____
FBEVAS B_____
CREFAS A_____
CREFAS B_____

A. no, yes, yes, yes
B. yes, yes, yes, yes
C. no, yes, no, yes
D. no yes, no, no

Answer 36

Answer: B

Question 37

An inadvertent “A” train CSAS has occurred. The Containment Spray pump was stopped The Containment Spray header isolation valves were overridden and closed Subsequently PBA-S03 became deenergized and DG “A” started and loaded as designed. Which ONE of the following describes the status of Containment Spray pump “A”?

A. Starts because the Train “A” Load Sequencer goes through Mode 0.
B. Starts because the CSAS signal resets.
C. Does not start because the pump is overridden to the STOP position.
D. Does not start because the breaker remains in the anti-pump condition until control power is cycled.

Answer 37

Answer: A

Question 38

You are investigating a trip of CPIAS at the BOP ESFAS cabinets. The following lights are illuminated on the Train “A” CPIAS module: The TRIP half of the TRIP/RESET button. The TEST light. The ACTUATE half of the ACTUATE/MAN/RST button. Based upon these indication, which one of the following has caused this trip?

A. Cross train trip signal.
B. Test input signal.
C. Manual actuation from B05.
D. High radiation signal from RU-37 (Power Access Pure Monitor).

Answer 38

Answer: B

Question 39

Of the following list of signals, select the answer that includes the signals that provide an automatic start of the Essential Cooling Water System:

A. SIAS, RAS, MSIS, AFAS
B. LOP, SIAS, MSIS, AFAS
C. LOP, RAS, CREVIAS, CREFAS
D. LOP, CSAS, CREFAS, AFAS

Answer 39

Answer: D

Question 40

Unit 1 is operating at rated power. In order to support maintenance, the operators have placed RU-29 in bypass on the Train BOP-ESFAS cabinet. RU-30 now fails high. Which one of the following describes the plant response?

A. No effect
B. Both trains of CREFAS initiate, resulting in across-trip to FBEVAS.
C. Train “B” CREFAS initiates only.
D. Both trains of CREFAS initiate.

Answer 40

Answer: D

Question 41

You are investigating a trip of CREFAS ‘B’ at the BOP ESFAS cabinets. The following lights are illuminated on the Train ‘B’ CREFAS module: The TRIP half of the TRIP/RESET button. The ACTUATE half of the ACTUATE/MAN/RST button. Based upon these indications, which one of the following has caused this trip?

A. High radiation signal from RU-30 which is still above its trip setpoint.
B. Cross train trip signal.
C. Manual actuation from B05.
D. High radiation signal from RU-30 which has subsequently cleared.

Answer 41

Answer: A

Question 42

An inadvertent CSAS Train “A” has occurred. The operator has overridden and closed the CS header isolation valve (SIA-UV-672). A LOP occurs on PBA-S03 and the DG reenergizes PBA-S03. Assuming no operator action, the CS header isolation valve (SIA-UV-672) will be ….

A. open due to control power cycling off/on (power to the override circuit).
B. closed due to BOP-ESFAS not operating valves.
C. open due to the sequencer going through Mode 0.
D. closed due to control power being supplied from PK.

Answer 42

Answer: A

Question 43

ACTUATE/MAN/RST

Considering the CREFAS BOP-ESFAS pushbutton shown above: If the CR handswitch is used to initiate CREFAS and the handswitch is then returned to its preactuated position, which of the following pushbutton sections would you expect to see illuminated?

A. Actuate ONLY.
B. Actuate, Manual and Reset.
C. Reset ONLY.
D. Actuate and Reset ONLY.

Answer 43

Answer: B

Question 44

Choose the statement below which describes the plant response if the TEST pushbutton is depressed on the Train “A” FBEVAS module on the BOP ESFAS cabinet.

A. Actuation of Train A FBEVAS and Train A CREFAS ONLY.
B. Actuation of Train A FBEVAS ONLY.
C. Actuation of Train A and B FBEVAS ONLY.
D. Complete actuation of FBEVAS and CREFAS.

Answer 44

Answer: D

Question 45

The reactor has tripped. An MSSV has stuck open on SG 1. SG 1 is at 23% WR. SG 1 is at 865 psia. SG 2 is at 30% WR. SG 2 is at 960 psia. With no operator action, which of the following describes the status of feedwater to both generators?

A. MFW is feeding SG 2 in RTO.
B. AFA and AFB are feeding SG 1 only.
C. Neither SG is receiving feedwater.
D. AFA and AFB are feeding both generators.

Answer 45

Answer: B

Question 46

TRIP/RESET

Regarding the FBEVAS indications in the BOP-ESFAS cabinets shown above— When the TRIP section ONLY is lit, this indicates that…

A. The radiation monitor has reached its trip setpoint or the TEST pushbutton has been pushed.
B. Auto test interrogation is under way.
C. FBEVAS has been manually initiated from B05.
D. FBEVAS has been actuated via its rad monitor and has dropped below the reset setpoint.

Answer 46

Answer: A

Question 47

If a SIAS is manually initiated from B05 and the”A” load sequencer fails to operate, which of the following pieces of equipment would fail to go to their SIAS position? 1. “A” HPSI pump 2. “A” CS pump 3. “A” HPSI injection valves
A. 3 ONLY.

B. 1, 2 and 3.
C. 1 and 3 ONLY.
D. 1 and 2 ONLY.

Answer 47

Answer: D

Question 48

An inadvertent CSAS has occurred. The crew has taken the appropriate actions to close the spray header isolation valve (SIB-UV-671) and stop Containment Spray (CS) Pump “B”. Subsequently a LOP occurs on PBB-S04, followed by a successful EDG “B” start and loading. Which ONE of the following describes the status of Containment Spray Pump “B” and SIB-UV-671?

A. Off with SIB-UV-671 open.
B. Running with SIB-UV-671 open.
C. Off with SIB-UV-671 closed.
D. Running with SIB-UV-671 closed.

Answer 48

Answer: B

Question 49

An inadvertent “A” train CSAS has occurred. The Containment Spray pump was stopped The Containment Spray header isolation valves were overridden and closed Subsequently PBA-S03 became deenergized and DG “A” started and loaded as designed. Which ONE of the following describes the status of Containment Spray pump “A”?

A. Starts because the Train “A” Load Sequencer goes through Mode 0.
B. Starts because the CSAS signal resets.
C. Does not start because the pump is overridden to the STOP position.
D. Does not start because the breaker remains in the anti-pump condition until control power is cycled.

Answer 49

Answer: A

Question 50

An inadvertent CSAS Train “A” has occurred. The operator has overridden and closed the CS header isolation valve (SIA-UV-672). A LOP occurs on PBA-S03 and the DG reenergizes PBA-S03. Assuming no operator action, the CS header isolation valve (SIA-UV-672) will be ….

A. open due to control power cycling off/on (power to the override circuit).
B. closed due to BOP-ESFAS not operating valves.
C. open due to the sequencer going through Mode 0.
D. closed due to control power being supplied from PK.

Answer 50

Answer: A

Question 51

Unit 1 is operating at 40% power. The Power Access Purge Unit has been started in preparation of a containment entry. RU-37 (one of the PAPA radiation monitors) fails HIGH. Which of the following describes the ESFAS actuations that result, if any?

A. CPIAS only.
B. CPIAS with a cross trip to CREFAS.
C. CPIAS with a cross trip to FBEVAS.
D. No actuation until RU-38 reaches its HIGH setpoint.

Answer 51

Answer: B

Question 52

Refueling operations are in progress. A fuel handling incident occurs. RU-37, Power Access Purge Monitor ‘A’ goes into high alarm. WHICH ONE of the following states all of the BOP ESFAS actuations that will occur?

A. FBEVAS and CREFAS
B. CPIAS
C. CPIAS and FBEVAS
D. CPIAS and CREFAS

Answer 52

Answer: D

Question 53

A rad monitor trip has caused a FBEVAS to actuate. How can an operator at the BOP-ESFAS cabinets determine that the rad monitor signal has dropped below the FBEVAS setpoint?

A. The TRIP portion of the TRIP/RESET pushbutton will dim but not extinguish.
B. The TRIP portion of the TRIP/RESET pushbutton will extinguish.
C. The RESET portion of the TRIP/RESET pushbutton will illuminate.
D. Both the TRIP and RESET portions of the TRIP/RESET pushbutton will extinguish.

Answer 53

Answer: C

Question 54

Which of the following signals will cause an EDG start to occur?

A. CIAS
B. RAS
C. CSAS
D. MSIS

Answer 54

Answer: C

Question 55

You are investigating a trip of FBEVAS at the BOP ESFAS cabinets. The following lights are illuminated on the Train “A” FBEVAS module: The ACTUATE, MAN and RST of the ACTUATE/MAN/RST button. Based upon these indication, which one of the following has caused this trip?

A. Manual actuation from B05.
B. Cross train trip signal.
C. Manual actuation from BOP ESFAS Cabinet.
D. High radiation signal from RU-31 (Fuel Pool Monitor).

Answer 55

Answer: A

Question 56

You are investigating a trip of CPIAS ‘A’ at the BOP ESFAS cabinets. The following lights are illuminated on the Train ‘A’ CPIAS module: Both the TRIP and RESET halves of the TRIP/RESET button. The ACTUATE half of the ACTUATE/MAN/RST button. Based upon these indications, which one of the following has caused this trip?

A. High radiation signal from RU-37 (Power Access Purge Monitor ‘A’) which has subsequently cleared.
B. Cross train trip signal.
C. Manual actuation from B05.
D. High radiation signal from RU-37 (Power Access Purge Monitor ‘A’) which is still above its trip setpoint.

Answer 56

Answer: A

Question 57

Which of the following describes the BOP ESFAS power supply arrangement? Each cabinet receives power from its associated train of…

A. PK and PN, which is auctioneered so that a loss of either supply to the cabinet does not impact the operation of the system.
B. PK ONLY. A loss of this power supply to the cabinet will cause an actuation of the components controlled by that train of BOP ESFAS.
C. PN ONLY. A loss of this power supply to the cabinet will cause an actuation of the components controlled by that train of BOP ESFAS.
D. PK and PN. A loss of either power supply to the cabinet will prevent those components controlled by the affected BOP ESFAS cabinet from actuating when needed.

Answer 57

Answer: A

Question 58

The unit is operating at rated power. A loss of PNA-D25 occurs. What impact (if any) will this loss have on BOP ESFAS?

A. Nothing will actuate or become non-functional solely due to the power loss.
B. Train ‘A’ CREFAS, CPIAS and FBEVAS actuations ONLY.
C. Train ‘A’ BOP ESFAS will become de-energized and not function.
D. Train ‘A’ and ‘B’ CPIAS, CREFAS, and FBEVAS will actuate.

Answer 58

Answer: D

Question 59

The unit is operating at rated power. The DC supply breaker to Train “A” BOB ESFAS cabinet trips. What, if anything, occurs as a result of this failure?

A. The lights on BOP-ESFAS train will flash, indicating that an error has been detected.
B. Full actuation of Train “A”.
C. Full actuation of Train “A”, with appropriate cross trips to Train “B”.
D. This failure should have no impact.

Answer 59

Answer: D

Question 60

Unit at 50% power. PNC-D27, 120 VAC distribution panel, loses power. All systems operate as designed. WHICH ONE of the following describes the expected response of the Reactor Protection and BOP-ESFAS Systems?

A. Reactor trip and all ESFAS and BOP-ESFAS actuations.
B. Initiation relays deenergize on PPS Channel’s A & C and no BOP ESFAS actuations.
C. CREFAS, CPIAS, and FBEVAS Train actuations and initiation relays deenergize on Channels A and C.
D. CREFAS, CPIAS, and FBEVAS Train actuations and initiation relays deenergize on Channels C and D.

Answer 60

Answer: B

Question 61

You are investigating a trip of CPIAS at the BOP ESFAS cabinets. The following lights are illuminated on the Train “A” CPIAS module: The TRIP half of the TRIP/RESET button. The TEST light. The ACTUATE half of the ACTUATE/MAN/RST button. Based upon these indication, which one of the following has caused this trip?

A. Cross train trip signal.
B. Test input signal.
C. Manual actuation from B05.
D. High radiation signal from RU-37 (Power Access Pure Monitor).

Answer 61

Answer: B

Question 62

Unit 1 is operating at rated power. In order to support maintenance, the operators have placed RU-29 in bypass on the Train BOP-ESFAS cabinet. RU-30 now fails high. Which one of the following describes the plant response?

A. No effect
B. Both trains of CREFAS initiate, resulting in across-trip to FBEVAS.
C. Train “B” CREFAS initiates only.
D. Both trains of CREFAS initiate.

Answer 62

Answer: D

Question 63

You are investigating a trip of CREFAS ‘B’ at the BOP ESFAS cabinets. The following lights are illuminated on the Train ‘B’ CREFAS module: The TRIP half of the TRIP/RESET button. The ACTUATE half of the ACTUATE/MAN/RST button. Based upon these indications, which one of the following has caused this trip?

A. High radiation signal from RU-30 which is still above its trip setpoint.
B. Cross train trip signal.
C. Manual actuation from B05.
D. High radiation signal from RU-30 which has subsequently cleared.

Answer 63

Answer: A

Question 64

Unit 1 is operating at rated power. Because of a suspected problem, the Train A Loss of Power (LOP)/Load Shed (LS) relays are all bypassed. While the crew is looking into the Technical Specifications, a loss of off-site power occurs. Assuming no operator action, how would the electrical distribution system look after the electric plant transient is stabilize?

A. PBA-S03 de-energized, Diesel Generator running unloaded.
B. PBA-S03 energized by Diesel Generator
C. PBA-S03 de-energized, Diesel Generator never received a start signal.
D. PBA-S03 de-energized, Diesel Generator tripped on high temperature.

Answer 64

Answer: C

Question 65

You are investigating a trip of FBEVAS at the BOP ESFAS cabinets. The following lights are illuminated on the Train “A” FBEVAS module: The TRIP and RESET halves of the TRIP/RESET pushbutton. The ACTUATE of the ACTUATE/MAN/RST button. Based upon these indication, this train of FBEVAS has tripped due to…

A. a manual actuation from B05.
B. RU-31 (Fuel Building) exceeding the trip setpoint and subsequently decreasing below this setpoint.
C. a manual actuation from BOP ESFAS Cabinet.
D. RU-31 (Fuel Building) exceeding its trip setpoint and remaining above this value.

Answer 65

Answer: B

Question 66

Unit 2 operating at 100% full power. Radiation monitor RU-31, train “A” Fuel Building area monitor, fails high. Train “B” Control Room Essential Filtration Actuation System module is in BYPASS. Fuel Building Essential Filtration (FBEVAS) train “A” actuates. All other systems and components are operating correctly. WHICH ONE of the following states all expected balance of plant engineered safety features actuation(s) in addition to FBEVAS Train “A”?

A. CREFAS Trains “A” and “B”.
B. CREFAS Train “A”.
C. FBEVAS”B” and CREFAS Trains “A” and “B”.
D. FBEVAS Train “B” and CREFAS Train “A”.

Answer 66

Answer: C