Week 9 Flashcards
• The plant is in Mode 3 with the reactor trip circuit breakers closed and CEAs capable of being
withdrawn.
• It is discovered that adequate SDM does not exist.
In accordance with TS 3.1.2 SDM Reactor Trip Breakers Closed, the operating crew must initiate
boration within a maximum of minutes.
A. 10
B. 15
C. 30
D. 60
B. 15
- The plant is at 100% power.
- # 1 Steam Generator Pressure transmitter Channel “A” SGA-PT-1013A fails LOW.
List the parameters that must be bypassed.
Steam Generator #1 Pressure Low (RPS)
Steam Generator #1 Level Low (ESF)
Steam Generator #2 Level Low (ESF)
• Unit 1 is exiting an outage with the plant at 345°F Tcold.
• During the outage, AFA-P01 was torn down for maintenance.
• A new governor assembly was installed due to older one having excessive tolerances.
• AFA-P01 is aligned and ready.
• All maintenance activities have been completed, as have all applicable Surveillance Requirements, with the exception of SRs 3.7.5.2, 3.7.5.3, and 3.7.5.4.
AFA-P01 is considered…
A. operable, SR 3.0.1 allows the unit to complete required surveillances when plant conditions can support.
B. operable, however SR 3.0.4 will prevent the mode change until these surveillance requirements are complete.
C. inoperable, however the mode change can be completed and the required surveillances must be completed within 24 hours.
D. inoperable, however the mode change can be completed and the required surveillances must be completed within 72 hours.
A. operable, SR 3.0.1 allows the unit to complete required surveillances when plant conditions can support.
• RCA-PT-101A (Pressurizer Pressure) fails high, tripping its RPS Channel.
• This instrument is bypassed.
• Subsequently, RCC-PT-101C fails low.
Based on these indications, the Operating Crew is required to…
A. take no action.
B. bypass channel C pressurizer pressure high within 1 hour.
C. have I&C trip channel C pressurizer pressure high within 1 hour.
D. remove channel A pressurizer pressure high from bypass within 1 hour.
C. have I&C trip channel C pressurizer pressure high within 1 hour.
• Unit 1 is in Mode 4
• RCS pressure is currently 380 psia
• HPSI pump A is Operable
• HPSI pump B is Inoperable while performing breaker alignments
• Containment Spray Pump A is Operable
• Containment Spray Pump B is functional, following an oil change but not all required
Surveillance Testing has been completed
• You have been requested to raise RCS pressure to 410 psia to allow testing of the SIT outlet
valve interlocks
(A) Which LCO(s) prevent the pressure increase?
(B) Can the provisions of LCO 3.0.4 be used to increase RCS pressure to 410 psia?
Why or why not? (Justify your decision)
(A) LCO 3.6.6
(B) Any of the following responses is correct.
No, 3.0.4.a does not allow relief - LCO 3.6.6 does not provide continued operation for an unlimited time
Yes, 3.0.4.b could be used if a risk assessment is performed
No, 3.0.4.c does not allow relief
- Unit 1 is operating at 100% power.
- During RPS testing on the “AD” Matrix Logic, it was identified that the “AD-1” Matrix Logic Relay has failed and will not change state.
Identify what LCO Condition(s) is/are applicable and what action(s) is/are required.
TS LCO 3.3.4 Condition ‘B’ as the Matrix Logic Relay is considered part of the Initiation Logic portion of RPS. You must open the affected RTCB within 1 hr. The RTCBs associated with the inoperable channel may be closed for up to 1 hr for testing.
Note: The option to open the redundant RTCB in the affected trip leg within 1 hr and open the affected RTCB within 48 hrs is available but not likely to be used in this specific condition.
The Reactor Coolant Flow Low RPS trip monitors (1) and provides protection in the event
of an (2) condition.
A. (1) SG ∆P (2) RCP shaft sheared
B. (1) RCP speed (2) RCP shaft sheared
C. (1) SG ∆P (2) under frequency condition
D. (1) RCP speed (2) under frequency condition
A. (1) SG ∆P (2) RCP shaft sheared
• The plant is at 100% power.
• Steam Generator Level #1 (wide range) Channel “A” fails LOW.
Within 1 hour, the operator must bypass or trip Channel “A”:
A. Steam Generator #1 Level Low (RPS) Steam Generator #1 Level Low (ESF) Steam Generator #2 Level Low (ESF) B. Steam Generator #1 Level Low (RPS) Steam Generator #1 Level Low (ESF) Steam Generator #2 Level Low (RPS) C. Steam Generator #1 Level Low (RPS) Steam Generator #1 Pressure Low (ESF) Steam Generator #2 Level Low (RPS) D. Steam Generator #1 Level Low (RPS) Steam Generator #2 Pressure Low (ESF) Steam Generator #2 Level Low (RPS)
A. Steam Generator #1 Level Low (RPS)
Steam Generator #1 Level Low (ESF)
Steam Generator #2 Level Low (ESF)
• Unit 1 is at 60% power
• VOPT Channel A fails due to a bad input.
• The operator carries out actions in accordance with Technical Specifications and I & C is notified.
• Subsequently, 1 hour and 10 minutes later, the Shift Manager determines due to troubleshooting the channel that it was never bypassed or trip.
The Crew should …
A. Enter 3.0.3 and commence a plant shutdown
B. Enter LCO 3.3.1 condition E and be in Mode 3 in 6 hours.
C. Invoke 25% completion time extension time and place VOPT in trip or bypass
D. Invoke a completion time extension of 1 hour and place channel in trip or bypass
B. Enter LCO 3.3.1 condition E and be in Mode 3 in 6 hours.
Which of the following events REQUIRES the Nuclear Regulatory Commission be notified?
1) Manual reactor trip during a shutdown entering a refueling outage.
2) Steam Generator Tube Leak of approximately 275 gallons per day (GPD)
3) Reactor Protection System instrument placed in BYPASS within 1 hour of inoperability.
4) Stroking SGE-UV-170 instead of SGE-UV-180 during 73ST-9SG01 (MSIVs – INSERVICE TEST)
A. 2 and 3 only
B. 1, 2, and 3 only
C. 2 only
D. 2 and 4 only
C. 2 only
- The plant is in mode 3 preparing for a reactor startup.
- The “A” channel of containment pressure fails low.
- The crew enters LCO 3.3.1 condition A and puts the channel in bypass.
Can the crew continue the startup and enter mode 2 in this condition? Why or why not?
Yes, LCO 3.3.1 condition A permits continued operation for an unlimited period of time.
LCO 3.0.4 only restricts mode changes when the actions entered do not allow operation
for an unlimited period of time.
Tech Spec 3.3.1 bases states: If one RPS channel is inoperable, startup or power operation is allowed to continue, providing the inoperable channel is placed in bypass or trip in 1 hour.
Unit 3 is at 100% power. The crew responds to alert and high alarms on all 4 channels of N-16 RU-142 RMS monitors. After consulting with Chemistry and assessing leak rates, the CRS determines that both S/Gs are impacted and total leakage is at 400 gallons per day and slightly rising. The crew should:
A) Enter Condition A of LCO 3.4.14 ONLY for exceeding the TS allowed leak rate.
B) Enter Condition B of LCO 3.4.14 ONLY for exceeding the TS allowed leak rate.
C) Enter Condition B of LCO 3.4.14 and Condition B of LCO 3.4.18 for exceeding the TS allowed leak rate.
D) No entry required until the crew determines which S/G is the most affected.
C) Enter Condition B of LCO 3.4.14 and Condition B of LCO 3.4.18 for exceeding the TS allowed leak rate.
Unit 1 is at 60% power and holding to remove the “A” FWPT from service due to an emergent issue.
A SEIS alarm is received and an RO notes that the green light board indication for the “B” Diesel Generator Fuel Oil Transfer Pump (DGFOTP) had gone out.
The Area Operator reported that the breaker for the “B” DGFOTP is in the trip-free position.
The crew should:
A) Enter Condition B of LCO 3.8.1 ONLY
B) Enter Condition B of LCO 3.8.3 ONLY.
C) Enter BOTH Condition B of LCO 3.8.1 and Condition B of LCO 3.8.3.
D) No LCO Condition entry is required.
A) Enter Condition B of LCO 3.8.1 ONLY
