BOP ESFAS, PPS (Plant Protection System)

Question 1

Unit is at 100% power when a large break LOCA occurred.
Containment pressure is currently 22 psig.
SG levels are 22% WR and increasing slowly.
SG 1 pressure is 430 psia.
SG 2 pressure is 225 psia.
RWT level 33% and decreasing slowly.
What safety signal would you expect in addition to SIAS/CIAS?

A. CSAS, RAS, AFAS-1 (NO AFAS-2)
B. CSAS, MSIS, AFAS-2 (NO AFAS-1)
C. MSIS, CSAS, AFAS-1 (NO AFAS-2)
D. RAS, AFAS-1 and AFAS-2, MSIS

Answer 1

C. MSIS, CSAS, AFAS 1 (No AFAS 2)

MSIS (<960 psia)
CSAS (>8.5 psig Wide Range)
AFAS 1 (<25.8% Wide Range)
No AFAS 2 (>185 psid between generators)
RAS (<9.4% RWT Level)

Question 2

Reactor is subcritical at 1.0 E-07% full power.
RCS Tc is 565 F.
RCS pressure is 2250 psia.
Shutdown and Part-strength CEA groups fully withdrawn.
The RCS is being inadvertently diluted.
A positive Start-up Rate now exists on all four meters with no CEA motion.
Which ONE of the following describes expected plant response to the dilution accident?

A. Reactor trips on Variable Overpower.
B. Reactor power increases to the point of adding heat.
C. Reactor trips on High Log Power.
D. Reactor power increases to approximately 3% full power.

Answer 2

C. Reactor trips on High Log Power.

Question 3

Which One of the following describes the basis for the Reactor Protection System PZR press - high trip setpoint? (Do not consider the SPLA trip part of RPS)

A. Protect the reactor Coolant system in the event of a SG overfeed condition.
B. Prevent operation of the pressurizer safety valves in the event of a loss of off-site power.
C. Protect the reactor coolant system in the event of a loss of condenser vacuum
D. Minimize operation of the steam generator safety valves in the event of a decrease in heat removal by the secondary system

Answer 3

C. Protect the reactor coolant system in the event of a loss of condenser vacuum.

Question 4

Which of the following ESFAS signals should not be initiated “on trend” (early)?

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

Answer 4

A. RAS

Question 5

The Emergency Core Cooling System is designed to ensure maximum design peak cladding temperature does not exceed?

A. 2150 F
B. 2200 F
C. 2250 F
D. 2300 F

Answer 5

B. 2200 F

Question 6

The reactor has tripped.
An MSSV has stuck open on SG 1.
SG 1 is at 32% WR and 930 psia. SG 2 is at 43% WR and 1060 psia.
Loop 1 Tc 538 F, Th 559 F. Loop 2 Tc 556 F, Th 559 F.

A. AFA and AFB are feeding both SGs.
B. AFA and AFB are feeding SG 1 only.
C. Neither SG is receiving Feedwater.
D. MFW is feeding both SGs in RTO at greater than 250 gpm.

Answer 6

C. Neither SG is receiving Feedwater.

Note: <960 psia MSLI isolating feedwater and SG level is not low enough for AFAS <25.8%

Question 7

PPS Trip Channel bypasses function by…

A. Blocking the ability of 1 of the associated logic matrix relays to trip.
B. Blocking the ability of the associated channel initiation relay to trip.
C. Closing contacts in parallel with the bistable output relay contacts in the logic matrix ‘Trip Ladders.’
D. Blocking the ability of two of the associated logic matrix relays to trip.

Answer 7

C. Closing contacts in parallel with the bistable output relay contacts in the logic matrix ‘Trip Ladders.’

Question 8

The plant is at 100% power.
An operator incorrectly pushes one SG PRESS SET POINT RESET push button on the PPS remote operators module (ROM).
This action will reset the low SG pressure trip set point:

A. 400 psia below existing SG pressure in all channels.
B. 200 psia below existing SG pressure in all channels.
C. 200 psia below existing SG pressure in the channel that the reset button was pushed.
D. 400 psia below existing SG pressure in the channel that the reset button was pushed.

Answer 8

C. 200 psia below existing SG pressure in the channel that the reset button was pushed.

Question 9

Which of the following would be an acceptable configuration for actual PPS set point compared to Tech Spec required set point for SIAS (pressurizer pressure) and CSAS?
Actual CSAS set point _______ than TS set point.
Actual SIAS set point _______ than TS set point.

A. Less, greater
B. Less, less
C. Greater, greater
D. Greater, less

Answer 9

A. Less, greater

Note: Think Conservatively.

Question 10

The bases for the minimum required volume of the RWT ensures that at the time of RAS initiation the water level in the containment sump will be enough to provide NPSH for the ESF pumps and the decay heat boil-off rate is less than…

A. The minimum design flow of two HPSI pumps.
B. The minimum design flow of one HPSI pump and one LPSI pump.
C. 75% of the minimum design flow of one HPSI pump.
D. The minimum design flow of two HPSI pumps and two LPSI pumps.

Answer 10

C. 75% of the minimum design flow of one HPSI pump.

Question 11

The Reactor Coolant Flow Low RPS trip monitors…

A. RCP speed and provides protection in the event of an under frequency condition.
B. RCP speed and provides protection in the event of an RCP shaft sheared.
C. SG DP and provides protection in the event of an RCP shaft sheared.
D. SG DP and provides protection in the event of an under frequency condition.

Answer 11

C. SG DP and provides protection in the event of an RCP shaft sheared.

Question 12

The plant is stable at 30% power.
Power is ramped up at a rate of 15% per minute.
Which no operator action, approximately when will PPS (not CPC aux trips) trip the reactor?

A. never.
B. 2 minutes.
C. 5 minutes.
D. 8 minutes.

Answer 12

B. 2 minutes.

Question 13

A combination of manual reactor trip pushbutton which will NOT result in a reactor trip is:

A. 1 and 2.
B. 2 and 4.
C. 2 and 3.
D. 1 and 4.

Answer 13

B. 2 and 4.

Note: Same Train.

Question 14

Which of the following failures will cause only one RTCB to open with no reactor trip?
A single…

A. PN power supply is lost.
B. Instrument channel trips.
C. Aux Relay cabinet fuse blows.
D. Matrix Relay fails.

Answer 14

D. Matrix Relay fails.

Note: RTCB (Reactor Trip Circuit Breaker)

Question 15

In order to reset a SIAS initiation in the AUX relay cabinet the operator must press…

A. Both reset buttons, one at a time.
B. Both reset buttons simultaneously.
C. Either reset button.
D. Hold one reset button, for a minimum of 5 seconds.

Answer 15

C. Either Reset Button.

Question 16

Reactor power at 104% full power and rising slowly.
Pressurizer pressure at 2390 psia and rising slowly.
Reactor trip circuit breakers 1 and 3 have failed to open.
Which ONE of the following identifies the expected plant response, with no operator action, as the transient continues?

A. Supplementary Protection System de-energizes the CEDMs.
B. DAFAS will immediately actuate to provide additional feed to the SGs.
C. Core bulk boiling will occur to shut down the reactor via void coefficient.
D. Reactor Protection System trips reactor when power reaches 110% full power.

Answer 16

A. Supplementary Protection System de-energizes the CEDMs.

Note: The stem leads to show that 1 and 3 failed to open so ATWAS

Question 17

Diverse Auxiliary Feedwater Actuation System (DAFAS) actuations will be TERMINATED by:

A. MSIS
B. SIAS
C. Delays P Lockout
D. #1 S/G level increasing to 15.8% WR

Answer 17

A. MSIS

Note: DAFAS is reset when >40.3% WR or MSIS occurs. DAFAS relays become de-energized.

Question 18

Reactor is tripped.
SG 1 pressure - 1040 psia.
SG 2 pressure - 1050 psia.
SG 1 level - 92% NR.
SG 2 level - 20% NR.
PZR pressure - 400 psia.
RWT level 6%.
CNTMT Press - 45 psig.
In addition to SIAS and CSAS, what ESF actuations should be present at this time?
(No operator actions have been taken.)

A. CIAS, AFAS-2, RAS
B. MSIS, AFAS-1, RAS
C. CIAS, MSIS, RAS
D. MSIS, AFAS-2, RAS

Answer 18

C. CIAS, MSIS, RAS

Note: AFAS-2 is a distractors because AFAS-2 low level (25.8%) comes off WIDE range.

Question 19

On the ‘A’ and ‘C’ PPS cabinets, the bistable status lights for ‘SG-1 LO FLOW’ and ‘SG-2 LO FLOW’ labeled ‘P’ and ‘T’ are lit.
None of the ‘BYPASS’ lights are lit.
The 3 lights under ‘SG-1 LO FLOW’ and ‘SG-2 LO FLOW’ labeled RPS are lit on the ‘A’ and ‘C’ PPS cabinets.
None of these lights are lit on the ‘B’ and ‘D’ modules?
What do these lights signify?

A. The 1 and 3 RTSGs should be open.
B. This indicates a ‘Half-Trip.’ No reactor trip occurs.
C. All four reactor trip breakers should be open, but no ESFAS actuations should occur.
D. All four reactor trip breakers should be open and ESFAS actuations should occur.

Answer 19

C. All four reactor trip breakers should be open, but no ESFAS actuations should occur.

Question 20

The plant is at 100% power.
Containment Pressure .1 psig.
Leg 1-3 CSAS A Leg 2-4 - window 5B05A.
Leg 1-3 CSAS B Leg 2-4 - window 5B05B.
CSAS - window 5C04A.
NO SIAS has actuated.
The Reactor has not tripped.
The operators stop the CS pumps as directed by procedure.
If an SIAS were to now occur, which one of the following statements describes how the CS pumps would be restarted?

A. Taking the CS pump handswitch to START once.
B. The pumps must be started manually at then local breakers.
C. They pumps would auto start.
D. Taking the CS pump handswitch to START twice.

Answer 20

D. Taking the CS pump handswitch to START twice.

Question 21

An inadvertent CSAS has occurred with no other ESFAS signals actuated. Choose the statement which correctly describes how the CS pumps would be stopped and what condition the breaker would be in.

A. Hold the handswitch in stop until the green light is on. The breaker is now anti-pumped.
B. Override and stop the CS pump. The breaker is now anti-pump.
C. Hold the handswitch in stop until the green light comes on. The breaker will respond to an active CSAS.
D. Override and stop the CS Pump. The breaker will respond to an actual CSAS.

Answer 21

A. Hold the handswitch in stop until the green light is on. The breaker is now anti-pumped.

Question 22

Unit 2 is operating in mode 1 at 100% power. A loss of PKA-M41 occurs. Which of the following describes the impact on the reactor protection system?

A. All four RTSG breakers trip open
B. RTSG breakers A and C trip open
C. RTSG breaker A trips open
D. RTSG breaker A fails as is (no trips will function)

Answer 22

C. RTSG breaker A trips open

Question 23

A loss of PNB-D26 occurs. Which of the following describes the impact on the reactor protection system?

A. RTSG breakers A and C trip open.
B. There is no impact on the reactor protective system.
C. Channel B input parameters all fail to trip set point value.
D. RTSG breakers B and D trip open.

Answer 23

D. RTSG breakers B and D trip open.

Question 24

RCA-PT-101A (pressurizer pressure) fails high tripping it’s RPS channel.
This instrument is bypassed.
Subsequently, RCC-PT-101C fails low.
Based on these indications, the Operating Crew is required to…

A. Remove channel A pressurizer pressure high from bypass within 1 hour.
B. Bypass channel A and C pressurizer pressure within 1 hour.
C. Have Instrument Maintenance trip channel C pressurizer pressure high within 1 hour.
D. Take no action.

Answer 24

C. Have Instrument Maintenance trip channel C pressurizer pressure high within 1 hour.

Question 25

Plant at 100% power.
Channels A and C sense a containment pressure of 3.2 psig.
Channels B and D are below the trip set point.
Which one of the following will occur?

A. No reactor trip, no RTCBs will open.
B. Reactor trip with all 4 RTCBs opening.
C. No reactor trip, but 2 RTCBs will open.
D. Reactor trip with only 2 RTCBs opening.

Answer 25

B. Reactor trip with all 4 RTCBs opening.

Question 26

Reactor has tripped from 100% power.
Reactor Coolant system pressure is 1650 psia and dropping.
Pressurizer level is 10% and dropping.
Steam generator levels have turned at 36% while range (they were never lower).
Steam generator pressures are 1020 psia and rising.
Containment pressure is 7.6 psig and rising.
Safety Injection and containment isolation actuations have occurred.
WHICH ONE of the following states the additional engineered safety features actuation(s) present assuming all systems functioned as designed?

A. Main Steam Isolation
B. Containment Spray Actuation
C. Auxiliary Feedwater Actuation
D. Auxiliary Feedwater Actuation and Main Steam Isolation

Answer 26

A. Main Steam Isolation

Question 27

How does COLSS interface with RPS?

A. Incore detectors are used to calibrate NIs.
B. RCS flow from COLSS feeds the DNBR trip.
C. Incore detectors are monitored for the DNBR trips.
D. JSCALOR is used to calibrate safety channel NIs.

Answer 27

D. JSCALOR is used to calibrate safety channel NIs.

Question 28

Plant at 100% power.
Channel ‘D’ PPS bypassed due to failed high RCS pressure (Narrow Range) transmitter.
Channel ‘B’ PPS SG-2 level low has tripped due to failed transmitter.
Channel ‘A’ RCS pressure (Narrow Range) transmitter now fails high.
Based on these conditions, which of the following is correct?

A. The operator can not bypass channel ‘A’ RCS pressure transmitter.
B. If the operator bypasses the channel ‘A’ RCS pressure transmitter, the channel would go into bypass, while removing the channel ‘D’ transmitter from bypass.
C. 2 Reactor Trip Circuit Breakers (RTCBs) would open when the channel ‘A’ RCS pressure transmitter failed, but the reactor would not trip.
D. The reactor would have tripped when the channel ‘A’ pressure transmitter failed.

Answer 28

B. If the operator bypasses the channel ‘A’ RCS pressure transmitter, the channel would go into bypass, while removing the channel ‘D’ transmitter from bypass.

Question 29

If one of the six RPS matrices loses one of its two matrix power supplies which of the following will occur?

A. All four RTCBs will open and the reactor will trip.
B. No RTCBs will open and the reactor will not trip.
C. Two RTCBs will open and the reactor will not trip.
D. Two RTCBs will open and reactor will trip.

Answer 29

C. Two RTCBs will open and the reactor will not trip.

Question 30

Channel ‘A’ LO PRESSURIZER PRESSURE PERMISSIVE light is lit.
If the channel ‘A’ LO PRESSURIZER PRESSURE BYPASS switch is turned to the BYPASS position, which of the following will occur.

A. The ‘A’ channel DNBR, LPD and low Pressurizer Pressure trips will be bypassed.
B. The ‘BYPASS’ light comes on. SIAS, CIAS, and LO Pressurizer Pressure Rx trip are now in 2 out of 3 logic.
C. There is no visible effect, and ‘A’ channel input to SIAS, CIAS, MSIS and Rx trip are unaffected.
D. The ‘BYPASS’ light comes on, all four (4) channels of SIAS, CIAS, MSIS, and Lo Pressurizer Pressure Rx trips are bypassed.

Answer 30

B. The ‘BYPASS’ light comes on. SIAS, CIAS, and LO Pressurizer Pressure Rx trip are now in 2 out of 3 logic.

Question 31

Which of the following describes the operational bypass associated with the Core Protection Calculator trips?
These trips are automatically…

A. Bypassed when power drops to 1E-2%.
B. Placed in service when power increases to 1E-4%.
C. Bypassed when power drops to 1E-4%.
D. Placed in service when power increases to 1E-2%.

Answer 31

B. Placed in service when power increases to 1E-4%.

Question 32

Channel B VOPT is bypassed and tripped.
Channel A VOPT is in tripped condition due to a power supply failure.
What the effect of depressing the Channel B VOPT bypass button?

A. Reactor trip.
B. No actual trip, but two trip breakers open.
C. Channel B VOPT will remain in bypass and Channel A VOPT will be in tripped condition.
D. Channel B VOPT will remain in bypass and a PPS Trouble alarm will be received.

Answer 32

A. Reactor trip.

Question 33

‘SIAS A’ 1-3 is lit with 2-4 still dark on B05 due to a single matrix power supply loss.
Which one of the following is indicated?

A. SIAS ‘B’ 1-3 should be lit.
B. SIAS ‘A’ pumps should be running.
C. SIAS ‘A’ valves should be in their SIAS position.
D. SIAS ‘A’ 2-4 should be lit.

Answer 33

A. SIAS ‘B’ 1-3 should be lit.

Question 34

The bypass of DAFAS can be accomplished by which of the following:

A. Using the 8 key switches in the PPS Cabinets.
B. Using the 4 key switches in Aux Relay Cabinets.
C. Using the 8 key switches in Aux Relay Cabinets.
D. By bypassing the 4 Steam Generator level trips at the PPS Cabinets.

Answer 34

C. Using the 8 key switches in Aux Relay Cabinets.

Question 35

Diverse Auxiliary Feedwater Actuation System (DAFAS) actuations will be TERMINATED by:

A. #1 S/G level increasing to 20.8% WR.
B. Delta P lockout.
C. MSIS.
D. SIAS.

Answer 35

C. MSIS

Question 36

SPS reactor trip occurred at 2409 psia.
S/G 1 pressure 1170 psia.
S/G 2 pressure 965 psia.
Pressurizer pressure 1950 psia.
Containment pressure 9.0 psig.
S/G level 18% (WR).
S/G level 0% (WR).
SIAS and MSIS have occurred.
What additional ESF actuations should be present at the time?

A. CSAS, AFAS-2, CIAS
B. CIAS, AFAS-1, AFAS-2, DAFAS
C. CSAS, AFAS-1, CIAS
D. DAFAS, CSAS, CIAS, AFAS-1

Answer 36

C. CSAS, AFAS-1, CIAS

Question 37

Unit 1 has tripped from 100% power.
Sub-Cooled Margin is 36F and lowering slowly.
Containment Pressure is 2.7 psig and rising slowly.
Pressurizer level is 20% and lowering slowly.
RCS Pressure is 1780 psia and lowering slowly.
SG #1 level is 28% WR and rising slowly.
SG #2 level is 30% WR and rising slowly.
SPTAs are in progress.
NO ESFAS Actuations have occurred.
Which ONE of the following describes the ESFAS Actuations the RO must manually initiate?

A. SIAS and CIAS ONLY due to exceeding the low pressurizer pressure set point.
B. SIAS and CIAS ONLY due to exceeding the high containment pressure set point.
C. SIAS, CIAS, and MSIS ONLY due to exceeding the low pressurizer pressure set point.
D. SIAS, CIAS, and MISIS ONLY due to exceeding the high containment pressure set point.

Answer 37

A. SIAS and CIAS ONLY due to exceeding the low pressurizer pressure set point.

(Note: SIAS, CIAS and MSIS set point is > 3.0 psig in CTMT. SIAS and CIAS set point < 1837 psia PZR Pressure)

Question 38

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 auction of the components controlled by the 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 38

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.

Question 39

Radiation monitor RU-31, Train ‘A’ Fuel Building are monitor, fails high.
Train ‘B’ Control Room Essential Filtration Actuation System module is in BYPASS.
Fuel Building Essential Filtration (FBVEAS) Train ‘A’ actuates.
All other systems and components are operating correctly.

What other balance of plant engineered safety features actuations(s) in addition to FBEVAS Train ‘A’?

Answer 39

FBEVAS Train ‘B’ and CREFAS Trains ‘A’ and ‘B’.

Question 40

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

A. Complete actuation of FBEVAS and CREFAS.
B. Actuation of Train ’A’ FBEVAS Only.
C. Actuation of Train ‘A’ and ‘B’ FBEVAS Only.
D. Actuation of Train ‘A’ FBEVAS and Train ‘A’ CREFAS Only.

Answer 40

B. Actuation of Train ‘A’ FBEVAS Only.

Question 41

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 RESEET 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 caution from B05.
D. High radiation signal from RU-37 (Power Access Purge Monitor ‘A’) which is still above its trip set point.

Answer 41

A. High Radiation signal from RU-37 (Power Access Purge Monitor ‘A’) which has subsequently cleared.

Question 42

Choose the statement below which describes the plant response if the TEST push button is depressed on the Train ‘A’ FBEVAS module on the BOP ESFAS cabinet.

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

Answer 42

C. Complete actuation of FBEVAS and CREFAS.

Question 43

If the CR hand switch is used to initiate CREFAS and the hand switch is then returned to its pre-actuated position, which of the following pushbutton sections would you expect to see illuminated?

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

Answer 43

B. Actuate, Manual, and Reset.

Question 44

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

Answer 44

A. CPIAS with a cross trip to CREFAS.

Question 45

The Steam Generator ‘Low Level’ trip set point is approximately ____ WR and is designed to…

A. 25.8%, prevent exceeding the design pressure of the RCS.
B. 44.2%, prevent exceeding the design pressure of the RCS.
C. 25.8%, protect against core damage due to the occurrence of locally saturated conditions in the limiting (hot) channel.
D. 44.2%, protect against core damage due to the occurrence of locally saturated conditions in the limiting (hot) channel.

Answer 45

B. 44.2%, prevent exceeding the design pressure of the RCS.

Question 46

Containment pressure (NR) Channel A 3.2 psig.
Containment pressure (NR) Channel B 2.7 psig.
Containment pressure (NR) Channel C 3.1 psig.
Containment pressure (NR) Channel D 2.6 psig.
What is the effect on the Emergency Core Cooling System?

A. No CIAS/SIAS actuation, no safety injection pumps or valves have gone to their actuated condition.
B. Full CIAS/SIAS actuation, both trains of Safety Injection pumps and valves are in their actuated condition.
C. ‘A’ train CIAS/SIAS actuation, only the ‘A’ train Safety Injection pumps and valves have gone to their actuated condition.
D. ‘A’ train 1-3 Half leg CIAS/SIAS actuation, only the ‘A’ train Safety Injection valves have gone to their actuated condition, no pumps are running.

Answer 46

B. Full CIAS/SIAS actuation, both trains of Safety Injection pumps and valves are in their actuated condition.

Question 47

Unit 1 is at 100% power.
Channel ‘C’ parameter 5 HI PZR PRESS is bypassed for I and C maintenance.
Channel ‘B’ HI PZR PRESS has just tripped due to an instrument failure.
Which one of the following correctly describes the status of the Reactor Protection System if the Channel ‘B’ parameter 5 bypass pushbutton is depressed?

A. Both Channels ‘B’ and ‘C’ are in bypass.
B. Neither Channel ‘B’ and ‘C’ is in bypass.
C. Channels ‘B’ parameter 5 goes in bypass, Channel ‘C’ comes out of bypass.
D. Channel ‘C’ parameter 5 stays in bypass, Channel ‘B’ parameter 5 is not in bypass

Answer 47

C. Channels ‘B’ parameter 5 goes in bypass, Channel ‘C’ comes out of bypass.

Question 48

The ‘A’ train BOP/ESFAS cabinet, SAA-C02A, has two power supplies which are…

A. PHA-M31 and PNC-D27
B. PHA-M31 and PKA-D21
C. PNA-D25 and PNC-D27
D. PNA-D25 and PKA-D21

Answer 48

D. PNA-D25 and PKA-D21

Question 49

Which one of the following combination of set points/interlocks will ALL initiate a Main Steam Isolation Signal (MSIS).

A. SG pressure 920 psia, Containment pressure 3.5 psig, SG level 46%f WR.
B. SG level 89% NR, SG pressure 920 psia and Pressurizer pressure 1850 psia.
C. Containment pressure 3.1 psig, SG level 92% NR and SG pressure 950 psia.
D. SG level 40% WR, Containment pressure 3.5 psig and Pressurizer pressure 1800 psia.

Answer 49

C. Containment pressure 3.1 psig, SG level 92% NR and SG pressure 950 psia.

Question 50

SG 1 level is 42% WR and lowering.
SG 1 pressure is 760 psig and lowering.
SG 2 level is 60%, WR and lowering.
SG 2 pressure is 950 psig and rising.
Containment pressure is 1.8 psig and rising.
RCS Tavg is 525F and lowering.
Alarm window 5B08C ‘SG-2 > SG-1 CH TRIP’ has locked in.
Any required ESFAS signals have properly actuated.
The Digital Feed Control system (DFWCS) is in Reactor Trip Override (RTO) and…

A. Neither SG is currently being fed. AFAS-1 will not initiate but AFAS-2 will at the required level.
B. Only SG 2 is currently being fed. AFAS-1 will not initiate but AFAS-2 will at the required level.
C. Neither SG is currently being fed. Neither AFAS-1 or AFAS-2 will initiate at the required level.
D. Both SGs are currently being fed. Neither AFAS-1 or AFAS-2 will initiate at the required level.

Answer 50

A. Neither SG is currently being fed. AFAS-1 will not initiate but AFAS-2 will at the required level.

Question 51

What is the significance of the Control Room instruments that have a white placard attached?
These instruments…

A. Are appendix ‘R’/ Fire qualified.
B. Are associated with ESFAS actuation set points.
C. Can also be found at the Remote Shutdown panel.
D. Are post accident monitoring/harsh containment qualified.

Answer 51

D. Are post accident monitoring/harsh containment qualified.

Question 52

Unit 1 is in Mode 6.
Core off-load is in progress.
The CRS is informed that a Fuel Assembly has been dropped in the Spent Fuel Pool.
The Fuel Assembly is being placed in a stable condition.
RU 31 is in alert alarm and readings are trending up.
RU 145 is in alert alarm and readings are trending up.
In addition to initiating a FBEVAS the crew is expected to…

A. Ensure all personnel have evacuated the area, no other actions are required.
B. Initiate or verify initiated CRVIAS and ensure all personnel have evacuated the area.
C. Initiate or verify initiated CREFAS and ensure all non-essential personnel have evacuated the area.
D. Initiate or verify initiated CREFAS, CRVIAS and ensure all non-essential personnel have evacuated the area.

Answer 52

C. Initiate or verify initiated CREFAS and ensure all non-essential personnel have evacuated the area.

Question 53

Unit 1 has tripped from 100% power.
Sub-Cooled Margin in 36F and lowering slowly.
Containment Pressure is 2.7 psig and rising slowly.
Pressurizer level is 20% and lowering slowly.
SG #1 level is 28% WR and rising slowly.
SG #2 level is 30% WR and rising slowly.
SPTAs are in progress.
NO ESFAS Actuations have occurred.
Which ONE of the following describes the ESFAS Actuations the RO must manually initiate?

A. SIAS and CIAS ONLY due to exceeding the low pressurizer pressure set point.
B. SIAS and CIAS ONLY due to exceeding the high containment pressure set point.
C. SIAS, CIAS and MSIS ONLY due to exceeding the low pressurizer pressure set point.
D. SIAS, CIAS and MSIS ONLY due to exceeding the high containment pressure set point.

Answer 53

A. SIAS and CIAS ONLY due to exceeding the low pressurizer pressure set point.

Question 54

The DNBR/LPD Reactor Protection System Operational Bypass is inserted ____ when the Excore NI Power decreases below ____.

A. (1) Manually (2) 1E-2%
B. (1) Manually (2) 1E-4%
C. (1) Automatically (2) 1E-2%
D. (1) Automatically (2) 1E-4%

Answer 54

B. (1) Manually (2) 1E-4%

Question 55

Unit 1 is operating at 100%
Channel ‘D’ PPS HI PZR PRESS is BYPASSED due to a failed high RCS pressure (Narrow Range) transmitter.
Channel ‘B’ PPS SG-2 level low has TRIPPED due to failed transmitter.
Channel ‘A’ RCS pressure (Narrow Range) transmitter now FAILS HIGH.
Based on these conditions, which ONE of the following is correct?

A. The Operator can NOT physically bypass channel ‘A’ HI PZR PRESS bistable.
B. The reactor would have tripped when the channel ‘A’ pressure transmitter failed.
C. 2 Reactor Trip Circuit Breakers (RTCBs) would open when the channel ‘A’ RCS pressure transmitter failed, but the reactor would not trip.
D. If the operator bypasses the ‘A’ HI PZR PRESS bistable, that channel would go into bypass, while removing the channel ‘D’ HI PZR PRESS bistable from bypass.

Answer 55

D. If the operator bypasses the ‘A’ HI PZR PRESS bistable, that channel would go into bypass, while removing the channel ‘D’ HI PZR PRESS bistable from bypass.

(Note: The hierarchy of the system would cause the D channel to come out of bypass when the A channel is placed in bypass)

Question 56

Unit 1 is operating at 100% power.
The CRS directs an RO to initiate a MSIS from the Aux Relay Cabinets.
The RO performs the following actions.
Depresses the 1-3 and 2-4 MSIS trip push buttons simultaneously on the ‘A’ train.
Depresses the 1-3 and 2-4 MSIS trip push buttons sequentially (push then release) on the ‘B’ train.
Assuming that SG pressures remains above the MSIS set point, you would expect an ‘A’ train MSIS full initiation with…

A. No initiation of the ‘B’ train, ‘A’ MSIS can be reset by depressing either reset pushbutton.
B. A half leg initiation of the ‘B’ train, ‘A’ MSIS can be reset by depressing either reset push button.
C. No initiation of the ‘B’ train, ‘A’ MSIS can only be reset by depressing both reset push buttons simultaneously.
D. A half leg initiation of the ‘B’ train, ‘A’ MSIS can only be reset by depressing both reset pushbuttons simultaneously.

Answer 56

A. No initiation of the ‘B’ train, ‘A’ MSIS can be reset by depressing either reset pushbutton.

(Note: To initiate an ESFAS actuation both buttons must be pushed simultaneously pushing and releasing gives no initiation half leg or otherwise, power is still available to all relays. Resetting requires that either rest button on the train be depressed.)

Question 57

Unit 1 is in Mode 3 following an automatic reactor trip…
AFN-P01 (Non-Essential Motor Driven Aux Feed Pump) is feeding both SGs at 350 gpm.
AFB-P01 (Essential Motor Driven Aux Feed Pump) is in standby.
AFA-P01 (Essential Turbine Driven Aux Feed Pump) is in standby.
Subsequently
Pressurizer pressure lowers to 1700 psia.
Which ONE of the following describes the status of the Auxiliary Feedwater System One minute after the PZR Pressure reaches 1700 psia?
AFN-P01…

A. Has tripped, AFB-P01 starts and feeds the SGs.
B. Is running and feeding both SGs, AFB-P01 is in standby status.
C. Has tripped, AFB-P01 starts but must be manually aligned to feed the SGs.
D. Is running with feedpath isolated, AFB-P01 starts but must be manually aligned to feed the SGs.

Answer 57

C. Has tripped, AFB-P01 start but must be manually aligned to feed the SGs.

Question 58

Unit 1 is operating at 100% power.
RPS TRBL/GRND alarm on B05.
All initiation relay lights are extinguished on Channel A and Channel C.
PKA, PKB, PKC, and PKD are energized.
All initiation relays on Channels B and D are energized.
Which ONE of the following describes the impact on the plant and the procedure entry required?

A. No RTSG breakers have tripped, enter 40AO-9ZZ13 (Loss of Class Control Power)
B. Two RTSG breakers are tripped, enter 40AO-9ZZ13 (Loss of Class Control Power)
C. No RTSG breakers have tripped, enter 40AO-9ZZ17 (Inadvertent ESFAS initiation)
D. Two RTSG breakers are tripped, enter 40AO-9ZZ17 (Inadvertent ESFAS initiation)

Answer 58

B. Two RTSG breakers are tripped, enter 40AO-9ZZ13 (Loss of Class Control Power)

(Note: De-energizing initiation relays on Channel A and C will result in RTSGs 1 and 3 opening due to the loss of PNA or PNC - either loss will send the crew to 40AO-9ZZ13 Loss of Class instrument or control power. Entry conditions for inadvertent ESFAS are not met and will not correct this condition.)

Question 59

Initial Conditions:
Unit 2 is in an outage.
Core Off Load is in progress.
RU-37 (Power Access Purge Area Monitor Train A) is inoperable and in bypass on BOP-ESFAS.
Subsequently:
RU-38 (Power Access Purge Area Monitor Train B) power supply fuses blow.
Which ONE of the following predicts the expected plant response and appropriate actions?
CPIAS actuates and provides a cross trip to ____.
If the CPIAS did not actuate properly the CRS must suspend ___.

A. (1) FBEVAS
(2) Movement of irradiated fuel assemblies in the fuel building per TRM 3.9.104 (FBEVAS)
B. (1) CREFAS
(2) Movement of irradiated fuel assemblies in the fuel building per Tech Spec 3.3.9 (CREFAS)
C. (1) FBEVAS
(2) Core alterations and movement of irradiated fuel assemblies in the CTMT per Tech Spec 3.3.8 (CPIAS)
D. (1) CREFAS
(2) Core alterations and movement of irradiated fuel assemblies in the CTMT per Tech Spec 3.3.8 (CPIAS)

Answer 59

D. (1) CREFAS

(2) Core alterations and movement of irradiated fuel assemblies in the CTMT per Tech Spec 3.3.8 (CPIAS

Question 60

Unit 1 tripped from 100% power.
SIAS/CIAS and AFAS-1 have automatically initiated.
SG #1 pressure is 745 psia and lowering.
SG #1 level is 8% WR and lowering.
SG #2 pressure is 760 psia and lowering.
SG #2 level is 30% WR and lowering.
Auxiliary feedwater flow is 1800 gpm to SG #1.
Auxiliary feedwater flow is 0 gpm to SG #2.
Which ONE of the following is the correct condition and proper Operator actions?

A. MSIS has failed. Initiate a manual MSIS immediately.
B. AFAS-2 has failed. Initiate a manual AFAS-2 immediately.
C. MSIS has failed. Obtain CRS permission, then immediately initiate a MSIS.
D. AFAS-2 has failed. Obtain CRS permission, then immediately initiate an AFAS-2.

Answer 60

A. MSIS has failed. Initiated a manual MSIS immediately.

Question 61

In order to reset a SIAS that was manually initiated from B05, the operator Must..

A. ONLY press EITHER LOCKOUT RESET pushbutton at each Auxiliary Relay Cabinet.
B. ONLY press BOTH LOCKOUT RESET pushbuttons at each Auxiliary Relay Cabinet SIMULTANEOUSLY.
C. FIRST press the INITIATION PATH RESET pushbutton at the PPS cabinet, then press EITHER LOCKOUT RESET pushbutton at each Auxiliary Relay Cabinet.
D. FIRST press the INITIATION PATH RESET pushbutton at the PPS cabinet, then press BOTH LOCKOUT RESET pushbuttons at each Auxiliary Relay Cabinet.

Answer 61

C. FIRST press the INITIATION PATH RESET pushbutton at the PPS cabinet, then press EITHER LOCKOUT RESET pushbutton at each Auxiliary Relay Cabinet.

(Note: IAW 40AO-9ZZ17, Appendix B, PPS-ESFAS Reset, Steps 5.2 (SIAS Initiation Relay lamps will NOT be illuminated), PPS Initiation Path is reset first. Then, in Appendix B, Step 6.1 (SIAS Actuation Signal lamps will NOT be illuminated), the PPS-ESFAS actuation is reset at the Aux Relay Panels.)

Question 62

The core is at 150 EFPD.
Reactor Startup is in progress.
As power increases above ____, the High Log Power Bypass Permissive light ____.

A.  (1) 10-2%
      (2) goes out
B.  (1)  10-2%
      (2) illuminates
C.  (1) 10-4%
      (2) goes out
D.  (1) 10-4%
      (2) illuminates

Answer 62

D. (1) 10-4%

(2) illuminates

Question 63

The Unit is operating at 100% one week after a refueling outage.
Which ONE of the choices below completes the following statement?
There are a total of ____ channels of ESF Matrix Logic and a loss of ALL of them will result in exceeding the peak fuel centerline temperature Safety Limit of ____ in the event of a Design Basis Accident?

A.  (1) four
      (2) 5022 F
B.  (1) four
      (2) 5080 F
C.  (1) six
      (2) 5022 F
D.  (1) six 
      (2) 5080 F

Answer 63

D. (1) six

(2) 5080 F

Question 64

CNMT Pressure Channel A is 3.4 psig.
CNMT Pressure Channel B is 2.7 psig.
CNMT Pressure Channel C is 3.1 psig.
CNMT Pressure Channel D is 2.6 psig.
Pressurizer pressure Channel A is 1845 psia.
Pressurizer pressure Channel B is 1830 psia.
Pressurizer pressure Channel C is 1832 psia.
Pressurizer pressure Channel D is 1840 psia.
SG 1 pressure Channel A is 980 psia.
SG 1 pressure Channel B is 950 psia.
SG 1 pressure Channel C is 970 psia.
SG 1 pressure Channel D is 970 psia.
Assuming NO Operator actions, the SG sample valves are…

A. Closed, due to both the MSIS and CIAS actuations.
B. Closed, due to both the SIAS and MSIS actuations.
C. Open, Hi containment trip set point has not been reached.
D. Open, Lo SG pressure trip set point has not been reached.

Answer 64

B. Closed, due to both the SIAS and MSIS actuations.

Question 65

Unit 1 was operating at 100% power.
ALL Main Feedwater is lost.
The Auxiliary Feedwater System will initiate feeding the SGs at (1) WR level and terminate AFW flow at (2).

A. (1) 20.3 (2) 40.8% WR level.
B. (1) 20.3 (2) 44.3% WR level.
C. (1) 25.8 (2) 40.8% WR level.
D. (1) 25.8 (2) 44.3% WR level.

Answer 65

C. (1) 25.8 (2) 40.8% WR level.

Question 66

Unit 1 has tripped on Low SG level.
AFAS-1 automatically initiated.
The CRS directed the manual initiation of AFAS-2 on trend.
The operator placed all 4 AFAS-2 hand switches on B05 to the initiate position and released the hand switches.
Both SG levels are now 45% WR level and rising.
Which ONE of the following describes the AFAS response to these conditions?

A. AFW flow to both SGs will stop.
B. AFW flow to both SGs will continue until SG levels reaches the AFAS reset set point.
C. SG-1 AFW flow will stop, SG-2 AFW flow will continue to feed until overridden by the Operator.
D. SG-1 AFW flow will stop, SG-2 AFW flow will continue until the high level override setpoint is reached.

Answer 66

C. SG-1 AFW flow will stop, SG-2 AFW flow will continue to feed until overridden by the Operator.

Question 67

RU-37, Power Access Purge ‘A’ is in HIGH alarm.
RU-38, Power Access Purge ‘B’ is in HIGH alarm.
RU-34, Containment Building Refueling Purge, is in HIGH alarm.
74RM-9EF41, Radiation Monitoring System Alarm Response, requires the operator to verify CPIAS and CREFAS have actuated.
Which ONE of the following describes the reason for performing this action?

A. CREFAS and CPIAS both actuated off the RU-38/38 HIGH alarms.
B. CREFAS actuated off the HIGH alarms, CPIAS actuated off the cross trip.
C. CPIAS actuated off the HIGH alarms, CREFAS actuated off the cross trips.
D. CPIAS actuated off the RU-37/38 HIGH alarms, CREFAS actuated off the RU-34 HIGH alarm.

Answer 67

C. CPIAS actuated off the HIGH alarms, CREFAS actuated off the cross trips.

Question 68

Which one of the following identifies the correct power supplies to ‘AB’ Reactor Protection System (RPS) Matrices and initiation circuits?

A. PNA-D25 and PNB-D26
B. PNA-D25 and PKB-M42
C. PKA-M41 and PNB-D26
D. PKA-M41 and PKB-M42

Answer 68

A. PNA-D25 and PNB-D26

Question 69

Unit 1 is operating at 100% power.
Auxiliary Feedpump ‘A’, AFA-P01, is OOS due to emergent issues.
PNB-D26 faults and is de-energized, the CRS has entered the appropriate AOP.
Subsequently
No corrective actions for the faulted instrument bus have been taken.
Channel ‘D’ SG 1, low SG pressure bistable faults and trips.
Which of the following is the impact and mitigating procedure for these conditions?

A. MSIS initiates, implement 40EP-9EO02, Reactor Trip.
B. MSIS initiates, implement 40RP-9EO06, Loss of All Feedwater.
C. MSIS B, Leg 2-4 only, implement 40AL-1RK5B, B05B Alarm Response.
D. MSIS B, Leg 2-4 only, implement 40AO-9ZZ17, Inadvertent PPS-ESFAS actuations.

Answer 69

A. MSIS initiates, implement 40EP-9EO02, Reactor Trip.

Question 70

Unit 1 has tripped from 100% power.
SG 2 level is 60% WR and lowering rapidly.
SG 2 pressure is lowering rapidly.
SG 1 > SG 2 PRESS CH TRIP has annunciated.
All 4 channels of SG 1 high delta P are tripped.
MSIS has actuated.
How does this Engineered Safety Function (ESF) alarm affect the Auxiliary Feedwater (AFW) and Diverse Auxiliary Feedwater (DAFAS) systems as SG 2 level continues to lower?

A. AFAS/DAFAS initiation will be blocked for SG 2.
B. AFAS will not initiate, but DAFAS will initiate if Pressurizer pressure reaches 2409 psia.
C. AFAS/DAFAS will initiate but Auxiliary Feedwater pumps and valve operation will be blocked.
D. AFAS will initiate, the crew is expected to secure AFW flow to be faulted SG.

Answer 70

A. AFAS/DAFAS initiation will be blocked for SG 2.

Question 71

In order to reset a CSAS that was manually initiated from B05, the operator MUST…

A. ONLY press EITHER LOCKOUT RESET pushbutton at each Auxiliary Relay Cabinet.
B. ONLY press BOTH LOCKOUT RESET pushbuttons at each Auxiliary Relay Cabinet Simultaneously.
C. FIRST press the INITIATION PATH RESET pushbutton at the PPS cabinet, then press EITHER LOCKOUT RESET pushbutton at each Auxiliary Relay Cabinet.
D. FIRST press the INITIATION PATH RESET pushbutton at the PPS cabinet, then press BOTH LOCKOUT RESET pushbuttons at each Auxiliary Relay Cabinet Simultaneously.

Answer 71

C. FIRST press the INITIATION PATH RESET pushbutton at the PPS cabinet, then press EITHER LOCKOUT RESET pushbutton at each Auxiliary Relay Cabinet.

Question 72

Unit 1 is operating at 100% power.
An inadvertent A train SIAS Leg 1-3 and 2-4 has actuated.
How will the SIAS actuation affect the electric plant?
NHN-M19 and NHM-M71 are ____ and DG A is operating in ____.

A. (1) Energized (2) Test Run Mode
B. (1) De-energized (2) Test Run Mode
C. (1) Energized (2) Emergency Run Mode
D. (1) De-energized (2) Emergency Run Mode

Answer 72

D. (1) De-energized (2) Emergency Run Mode

Question 73

CNMT pressure (NR) Channel A 3.2 psig.
CNMT pressure (NR) Channel B 2.8 psig.
CNMT pressure (NR) Channel C 3.1 psig.
CNMT pressure (NR) Channel D 2.6 psig.
What is the effect on the Containment Isolation System?

A. No CIAS Actuation
B. Full CIAS Actuation
C. ‘A’ train CIAS actuation only.
D. ‘A’ train 1-3 Half Leg CIAS actuation only.

Answer 73

B. Full CIAS Actuation

Question 74

Unit 1 automatically tripped from 100% power.
A large steam line break in the Turbine Building has occurred.
Both SGs dropped to 15% WR level.
Both SGs dropped to 800 psig.
Pressurizer pressure dropped to 0.3 psig.
All appropriate ESFAS signals have actuated.
Subsequently:
SG levels are 55% WR and rising.
SG pressures are 1100 psig and stable.
Pressurizer is 2000 psia and rising.
Which of the actuated ESFAS signals would have to be manually reset at BOTH the Initiation RESET panels and Aux Relay cabinets to allow opening the SG blowdown and sample isolation valves without going to Override?

A. CIAS and AFAS
B. MSIS and SIAS
C. AFAS and MSIS
D. SIAS and CIAS

Answer 74

B. MSIS and SIAS

Question 75

Unit 3 was operating at 100% when RCP 1A experienced a sheared shaft.

1. Based on these conditions, the FIRST RPS trip signal received will be…
2. During the performance of SPTAs, if RCS inventory and/or pressure control is challenge (but adequate RCP NPSH remains), the crew should also trip RCP…

A.  1. Low DNBR
      2. 2A
B.  1. Low DNBR 
      2. 2B
C.  1. Low RC Flow SG 1
      2. 2A
D.  1. Low RC Flow SG 1
      2. 2B

Answer 75

C. 1. Low RC Flow SG 1

2. 2A

Question 76

Unit 1 was operating at 100% power.
Reactor Power Cutback System was out of service for testing.
A Main Turbine trip occurred.
The Reactor Protection System failed to trip the reactor, resulting in an ATWS.
How will the Supplemental Protection System (SPS) respond to trip the reactor?
SPS will open…
1. Reactor Trip Circuit Breakers
2. L03 and L10 supply breakers
3. CEDMCS MG Set output contactors

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

Answer 76

C. 1 and 3 ONLY

Question 77

A reactor startup following a refueling outage is in progress on Unit 2.
The reactor is at the ECP-1000 pcm position.
Subsequently
The Channel ‘A’ Log Safety Channel NI failed low due to a transmitter failure.
Based on the listed conditions, with LCO actions, if any, must be taken in response to this failure?

A. Immediately determine RCS boron concentration per LCO 3.3.12, Boron Dilution Alarm System
B. Immediately suspend positive reactivity additions per LCO 3.9.2, Nuclear Instrumentation.
C. Place the applicable RPS bistable in bypass or trip within one hour per LCO 3.3.1, RPS Instrumentation - Operating.
D. Place the applicable RPS bistables in bypass or trip within one hour per LCO 3.3.2, RPS Instrumentation - Shutdown.

Answer 77

D. Place the applicable RPS bistables in bypass or trip within one hour per LCO 3.3.2, RPS Instrumentation - Shutdown.

Question 78

A Channel ‘B’ RPS trip bistable has just been placed in bypass in preparation for surveillance testing. What will happen if the same parameter RPS trip bistable is subsequently placed in bypass on Channel ‘A’?
The Channel ‘A’ bistable will ____ and the Channel ‘B’ bistable will ____.

A.  1. Go into bypass
      2. Come out of bypass
B.  1. Go into bypass
      2. Receive a trip signal
C.  1. NOT go into bypass
      2. Remain in bypass
D.  1. NOT go into bypass
      2. receive a trip signal

Answer 78

A. 1. Go into bypass

2. Come out of bypass

Question 79

When operating at 100% power, which of the following plant parameters, individually, would result in BOTH an automatic reactor trip AND an automatic ESFAS actuation?

1. SG pressure of 950 psia.
2. SG level of 38% wide range.
3. Pressurizer pressure of 1850 psia.

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

Answer 79

A. 1 ONLY

Question 80

The CRS is commencing a controlled Cooldown and depressurization in preparation for a refueling outage.
The CRS has directed resetting SIAS set points during the depressurization.
When the RO depresses the LO PZR PRESS SET POINT RESET pushbutton on B05, the SIAS set point will lower to ____ psia below ____.

A.  1. 200
      2. The current SIAS set point
B.  1. 200
     2. Current Pressurizer pressure
C.  1.  400
      2. The current SIAS set point
D.  1.  400
      2. Current Pressurizer pressure

Answer 80

D. 1. 400

2. Current Pressurizer pressure

Question 81

Unit at 100% power.
PNC is inadvertently de-energized.
No other malfunctions occur.
Which of the following is true?

A. The reactor will trip.
B. No protective actions will occur.
C. All ESFAS systems will actuate.
D. A reactor trip will occur along with a SIAS ‘A’ actuation ONLY.

Answer 81

B. No protective actions will occur.

Question 82

Reactor power at 104% full power and STEADY.
Pressurizer pressure at 2390 psia and RISING slowly.
SG #1 level is 48% wide range and DROPPING.
SG #1 pressure is 980 psia and DROPPING.
SG #2 level is 56% wide range and RISING.
SG #2 pressure is 1180 psig and RISING.
Containment pressure is 2.6 psig and RISING.
Based on the current plant parameters, which ONE of the following identifies the correct alarm window that should be lit.

A. ‘RPS INIT’ is in ALARM
B. ‘SPS CH TRIP’ is in ALARM
C. ‘VAR OVR PWR CH TRIP’ is in ALARM
D. ‘LO SG 1 LVL CH PRE-TRIP’ is in alarm

Answer 82

A. ‘RPS INIT’ is in ALARM

Question 83

A LOCA occurs on Unit 3 at 100% power.
The Reactor Trips.
SIAS actuates.
A Loss of Offsite Power subsequently occurs.
The ‘A’ Diesel Generator starts and connects to its respective bus.
The BOP-ESFAS sequencer only functions in the ‘LOP-only’ mode (MODE 3).
Which ONE of the following describes a legitimate concern for this situation?

A. The HPSI loop injection valves must be opened before starting the ‘A’ HPSI pump.
B. The ‘A’ Spray Pond pump must be started manually to support Diesel Generator operation.
C. Auxiliary Feedwater Pump AFN-P01 will start automatically and overload the bus if an AFAS is received.
D. Loads should be started with sufficient time delay between them to prevent overloading the diesel generator.

Answer 83

D. Loads should be started with sufficient time delay between them to prevent overloading the diesel generator.

Question 84

Unit 1 is operating at 80% power.
Engineering informs the operating crew that there is a problem with Reactor Trip Cirbuit Breaker (RTCB) #1 which will impact its ability to open.
Based on these conditions, the operating crew is required by Tech Specs to open…

A. RTCB #1 or #3 immediately.
B. RTCB #1 or #3 within one hour.
C. RTCB #1 AND #3 immediately.
D. RTCB #1 AND #3 within one hour.

Answer 84

B. RTCB #1 or #3 within one hour

Note: TS 3.3.4 give the option of opening the affected RTCB or the other one in the train within 1 hr.

Question 85

The plant is in Shutdown Cooling using LPSI PUMP ‘B’.
A loss of ALL offsite power has occurred.
Diesel Generator ‘B’ has started and responded as expected.
Which ONE of the following describes the operation of the LPSI Pump ‘B’?

A. LPSI Pump ‘B’ should have restarted as soon as DG ‘B’ output breaker closed.
B. LPSI Pump ‘B’ should have restarted 13 seconds after DG ‘B’ output breaker closed.
C. LPSI Pump ‘B’ is NOT running. Manual restarting of the pump would be necessary.
D. LPSI Pump ‘B’ is NOT running. It will restart automatically when the Load Sequencer is reset.

Answer 85

C. LPSI Pump ‘B’ is NOT running. Manual restarting of the pump would be necessary.

(Note: The LPSI pump will not auto restart on a Loss of Offsite Power with power restored by the DG to the buses. The operator will be required to restart the pump manually. The Load Sequencer does not pick this up unless a SIAS condition is present.)

Question 86

U1 Reactor power is 100%.
A channel check is being performed to compare indicated power to COLSS Calorimetric power (JSCALOR).
Complete the following statement.
If Reactor power is ____ then Calorimetric Power and all indicated power levels must agree within ____.

A. Less than 20%, + or - .5%
B. Less than 80%, + or - .5%
C. Greater than or equal to 20%, + or - 2.0%
D. Greater than or equal to 80%, + or - 2.0%

Answer 86

D. Greater than or equal to 80%, + or - 2.0%

Question 87

Unit 1 is operating at 100% power when the following events occur.
RCP 1A trips.
All 4 RPS channels of CPCs DNBR and LPD pre-trips and trips have initiated.
All 4 RPS channels SG 1 Lo Flow trips have initiated.
DNBR LO is in fast flash on the Reactor Trip 1st Out Annunciator board.
The Reactor has not tripped, phase current lights are still illuminated.
An AO has been sent to open the Reactor Trip Switchgear breakers locally.
Under these conditions the Main Turbine…

A. Tripped when the Reactor trip signal was generated.
B. Will trip when the Reactor trip under voltage relays are actuated.
C. Will trip following the Reactor trip when the Overspeed signal is generated.
D. Will trip following the Reactor trip when the Reverse Power signal is generated.

Answer 87

B. Will trip when the Reactor trip under voltage relays are actuated.

Question 88

Inadvertent ‘A’ train Recirculation Actuation signal (RAS) has initiated.
The initiating signal has been cleared.
In order to reset the RAS in the AUX relay cabinets the Operator, AT A MINIMUM, must press…

A. Either reset button.
B. Both reset buttons, one at a time.
C. Both reset buttons simultaneously.
D. And hold one reset button, for a minimum of 5 seconds.

Answer 88

A. Either reset button.

Question 89

Unit 1 is operating at rated power.
Channel B ‘LO SG 1 PRESS’ bistable is bypassed and tripped.
Time 1
Channel A ‘LO SG 1 PRESS’ bistable trips due to a transmitter failure.
Time 2
PNB-D26 de-energizes due to a ground fault.
The CRS directs recovery actions per the LOSS of Class Instrument or Control Power AOP.
Pressing the ‘B’ Channel PPS bistable bypass button for ‘LO SG 1 Press’ will result in a…

A. Reactor trip, implement the Reactor Trip procedure.
B. Reactor trip, implement the Loss Of All Feed procedure.
C. Full MSIS actuation, implement the Large Load Reject procedure.
D. Half leg MSIS actuation, implement guidance per the alarm response procedure.

Answer 89

A. Reactor trip, implement the Reactor Trip procedure.

Note: possible trip then placed in bypass. When bypass pressed came out of bypass

Question 90

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 90

D. was called upon to start but did not start.

Question 91

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 91

D. Train ‘A’ and ‘B’ CPIAS, CREFAS, and FBEVAS will actuate.

Question 92

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 92

B. RU-31 (Fuel Building) exceeding the trip setpoint and subsequently decreasing below this setpoint.

Question 93

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 93

B. CIAS

Question 94

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 94

D. AFB would start, associated feed valves would remain closed.

Question 95

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 95

C. The Train A HPSI, LPSI, and CS pumps would start, no injection valves open.

Question 96

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

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

Answer 96

C. CSAS

Question 97

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 97

A. High radiation signal from RU-37 (Power Access Purge Monitor ‘A’) which has subsequently cleared.

Question 98

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 98

C. Nothing will actuate or become non-functional due to the power loss.

Question 99

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 99

C. Feed SG#2 only at 1360 to 1600 gpm.

Question 100

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 100

B. CREFAS

Question 101

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 101

B. Initiation relays deenergize on PPS Channel’s A & C and no BOP ESFAS actuations.

Question 102

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 102

B. PBB-S04 de-energized, Diesel Generator never received a start signal.

Question 103

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 103

D. This failure should have no impact.

Question 104

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 104

A. Both Trains of FBEVAS and both Trains of CREFAS actuate.

Question 105

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 105

A. Override and start the ‘A’ LPSI pump and restore SDC to service.

Question 106

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 106

C. PBA-S03 de-energized, Diesel Generator never received a start signal.

Question 107

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 107

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

Question 108

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 108

D. No actuation should occur.

Question 109

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 109

C. Actuation of Train A FBEVAS ONLY.

Question 110

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 110

D. Channel “A” FBEVAS actuates ONLY.

Question 111

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 111

C. Low Pressure Safety Injection pumps will stop.

Question 112

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 112

D. Reactor Trip, full SIAS/CIAS and MSIS.

Question 113

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 113

C. only Train “A” FBEVAS.

Question 114

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 114

B. Train “A” and “B” CPIAS and a Train “A” and “B” CREFAS to actuate.

(Note: The Rad monitor needs to be reset before taken out of bypass. If trip light is still in the trip is still in)

Question 115

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 115

C. Override and open NCA-UV-402, outside containment isolation valve on the NC return header.

Question 116

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 116

B. yes, yes, yes, yes

Question 117

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 117

B. Test input signal.

Question 118

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 118

D. LOP, CSAS, CREFAS, AFAS

Question 119

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 119

D. Both trains of CREFAS initiate.

Question 120

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 120

A. High radiation signal from RU-30 which is still above its trip setpoint.

Question 121

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 121

B. Actuate, Manual and Reset.

Question 122

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 122

D. Complete actuation of FBEVAS and CREFAS.

Question 123

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 123

B. AFA and AFB are feeding SG 1 only.

Question 124

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 124

A. The radiation monitor has reached its trip setpoint or the TEST pushbutton has been pushed.

Question 125

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 125

D. 1 and 2 ONLY.

Question 126

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 126

B. Running with SIB-UV-671 open.

Question 127

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 127

A. Starts because the Train “A” Load Sequencer goes through Mode 0.

Question 128

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 128

A. open due to control power cycling off/on (power to the override circuit).

Question 129

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 129

B. CPIAS with a cross trip to CREFAS.

Question 130

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 130

D. CPIAS and CREFAS

Question 131

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 131

C. The RESET portion of the TRIP/RESET pushbutton will illuminate.

Question 132

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

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

Answer 132

C. CSAS

Question 133

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 133

A. Manual actuation from B05.

Question 134

Unit operating at 100% full power. Channel “A” upper detector excore safety monitor fails HIGH. WHICH ONE of the following describes the expected response of Channel “A” Reactor Protection System to this failure?

A. VOPT, High Log power, High LPD and Low DNBR trips without pre-trips.
B. VOPT, High LPD and Low DNBR trips without pre-trips.
C. VOPT, High Log power, High LPD and Low DNBR trips and pre-trips.
D. VOPT, High LPD and Low DNBR trips and pre-trips.

Answer 134

D. VOPT, High LPD and Low DNBR trips and pre-trips.

Question 135

Given that the EDG load sequencer train A, sequencer has just been declared inoperable. Select the required action, per Improved Technical Specifications.

A. Deenergize the train A sequencer within 1 hour.
B. Declare train A ESF equipment inoperable immediately.
C. Perform an auto-test of train B BOP ESFAS in the next 4 hours.
D. Declare required features(s) supported by the inoperable sequencer inoperable when its redundant required feature(s) is inoperable after 4 hours.

Answer 135

D. Declare required features(s) supported by the inoperable sequencer inoperable when its redundant required feature(s) is inoperable after 4 hours.

Question 136

Plant at 100% power Channel ‘A’ PPS bypassed due to failed SG-1 level transmitter Channel ‘B’ tripped due to failed RCS pressure transmitter. If the operator pressed the pushbutton to bypass Channel “C” SG-1 level transmitter, which one of the following would occur?

A. Reactor trip.
B. The pushbutton would have no effect.
C. channel would go into bypass.
D. 2 RTCB’s would open, but the reactor would not trip.

Answer 136

B. The pushbutton would have no effect.

Question 137

PPS cabinet channel “A”, lights labeled “P”, “T”, and “bypass” are lit in the window under “VAROVR PWR”. Channel “B” “VAROVER PWR” also has “P”, “T” labeled lights lit. What is the status of the variable overpower trip?

A. One more channel trip will cause a reactor trip.
B. A reactor trip should have occurred.
C. The reactor cannot trip automatically in this condition.
D. Two more channels must trip before the reactor will trip.

Answer 137

A. One more channel trip will cause a reactor trip.

Question 138

Plant cooldown in progress. RCS pressure is 1500 psia. RCS temperature is 510°F. The “Low Pressurizer Pressure” pre-trip alarm has actuated and the operator has reset channels “A” and “C” ONLY of the low pressurizer pressure setpoint reset pushbuttons. Plant cooldown continues. With NO operator action, SIAS/CIAS will occur for…

A. “B” Train only, however, no equipment will start.
B. “B” Train only, with only “B” Train equipment actuating.
C. both “A” and “B” Trains, however, no equipment will start.
D. both “A” and “B” Trains, and all equipment will start

Answer 138

D. both “A” and “B” Trains, and all equipment will start.

Question 139

A control room operator attempts to manually initiate a SIAS using just two of the four switches on B05. Which one of the following is true?

A. Both SIAS Trains will actuate regardless of which two switches were used.
B. One train of SIAS ONLY will actuate.
C. One SIAS train’s valves will open, but the associated pumps will not start.
D. A SIAS actuation may not occur depending on which two switches are used.

Answer 139

D. A SIAS actuation may not occur depending on which two switches are used.

Question 140

PPS indications are as follows: Pretrip and trip lamps are illuminated on Remote Operator’s Module (ROM) and Bistable Control Channel (BCP) channel “A” for “LO SG-1 LEVEL” (ESFAS). All three (3) bistable relay contact status indicating lights for the “LO SG-1 LEVEL” (ESFAS) bistable are illuminated on the BCP. No other abnormal indications exist on the PPS cabinets or ROM. Which ONE of the following events has occurred:

A. Reactor trip on Low SG-1 level.
B. Single channel trip on low SG-1 level “A” channel.
C. Half-leg AFAS actuation (1/2 equipment actuates).
D. Power supply failure to “A” channel initiation path (K-1).

Answer 140

B. Single channel trip on low SG-1 level “A” channel

Question 141

A SIAS was received on low pressurizer pressure. Pressure was subsequently restored to 2250 psia in the pressurizer. Containment pressure is 0 psig. At this time, the initiation reset buttons are pressed with the keylock switch in the “UNLK” position for all four channels. Then, at the “A” and “B” aux relay cabinets, the SIAS “LOCKOUT RESET” buttons are pressed one at a time. Which one of the following is correct?

A. Only the “A” train of SIAS actuated equipment may be repositioned without going to “OVERRIDE”.
B. Neither train of SIAS actuated equipment may be repositioned without going to “OVERRIDE”.
C. Both trains of SIAS actuated equipment may be repositioned without going to “OVERRIDE”.
D. All “A” and “B” train equipment that automatically started on the SIAS should have automatically stopped.

Answer 141

C. Both trains of SIAS actuated equipment may be repositioned without going to “OVERRIDE”.