HLC 25 Flashcards
(100 cards)
Given the following conditions:
*Unit 2 is at 45% power
*Pressurizer (PZR) Level Control is selected to the ‘X’ position
*Reactor Regulating System (RRS) Selector is in the RRS 1 position
Subsequently:
*LT-1110X develops a leak on the high pressure connection of the D/P cell (reference leg)
*PZR Pressure is 2235 psia and slowly LOWERING
Which ONE of the following completes the statements below?
Based on the given conditions, the automatic response of the Pressurizer Level Control system is that letdown flow will ____(1)____.
In accordance with 2-AOP-01.10, Pressurizer Pressure And Level, operators are required to place the ____(2)____ to mitigate the event.
A.
(1) RISE
(2) RRS selector switch to the RRS-2 position
B.
(1) RISE
(2) PZR level control selector switch to the ‘Y’ position
C.
(1) LOWER
(2) RRS selector switch to the RRS-2 position
D.
(1) LOWER
(2) PZR level control selector switch to the ‘Y’ position
B.
(1) RISE
(2) PZR level control selector switch to the ‘Y’ position
Given the following conditions:
* Unit 2 was tripped from 100% power due to rapidly lowering Pressurizer Level
* Following the Reactor trip, a LOOP occurred
* Pressurizer Pressure is 1350 psia and slowly lowering
* Core Exit Thermocouples indicate 530°F
* 2-EOP-03, LOCA is in progress
Which ONE of the following completes the statements below?
Based on the conditions above, the primary mechanism of RCS heat removal is being provided by ____(1)____.
In accordance with 2-EOP-03, LOCA the STABLE MINIMUM required NR S/G level is ____(2)____.
A.
(1) S/Gs
(2) 35%
B.
(1) S/Gs
(2) 60%
C.
(1) RCS Break Flow
(2) 35%
D.
(1) RCS Break Flow
(2) 60%
B.
(1) S/Gs
(2) 60%
Given the following conditions:
* Unit 1 has experienced a Large Break LOCA
* RWT Level is 8 ft and lowering
* 1-EOP-03, LOCA is in progress at Step 37, In preparation for RAS
Which ONE of the following completes the statements below?
IAW 1-EOP-03, the crew is required to REMOVE the power inhibit from SI Recirc valves V3659, SI PUMP MINIFLOW ISOL and V3660, SI PUMP MINIFLOW ISOL by operating the SI Recirc Valves ____(1)____.
An inadvertent closure of a single valve will isolate recirc flow for ____(2)____ ECCS train(s).
A.
(1) supply breakers
(2) BOTH
B.
(1) supply breakers
(2) a SINGLE
C.
(1) RTGB key switches
(2) BOTH
D.
(1) RTGB key switches
(2) a SINGLE
C.
(1) RTGB key switches
(2) BOTH
Given the following conditions:
12:00:00
Unit 1 is at 100% power
12:07:00
TE-1151, 1A1 RCP Lower Seal temperature is 180 °F and RISING
12:07:30
1-AOP-01.09A1, 1A1 Reactor Coolant Pump was entered
Which ONE of the following completes the statements below?
As TE-1151 continues to RISE, HCV-14-11A1, Seal Cooler HX Isolation Valve ____(1)____ AUTOMATICALLY CLOSE.
In accordance with 1-AOP-01.09A1, the crew will be required to trip the Reactor and secure the RCP, if the Lower Seal Cavity Temperature exceeds the setpoint of ____(2)____.
A.
(1) will
(2) 200 °F
B.
(1) will
(2) 250 °F
C.
(1) will NOT
(2) 200 °F
D.
(1) will NOT
(2) 250 °F
B.
(1) will
(2) 250 °F
Given the following conditions:
* Unit 2 is in Mode 3
* Pressurizer level control system malfunction occurs
* 2-AOP-01.10, Pressurizer Pressure and Level has been entered
* At time 1415 charging and letdown were secured
* RCS temperature is 532°F
* RCS pressure is 2250 psia
* RCP Controlled Bleedoff (CBO) is 1.1 gpm per RCP
* Pressurizer level is 33%
* Last Unidentified RCS leak rate was 0.05 gpm
* No operator actions were taken, and all RCS leakage parameters remained constant for the next two hours
Which ONE of the following describes the EARLIEST time that the Pressurizer will be at the MINIMUM Tech. Spec. 3.4.3, Pressurizer limit?
A. 1501
B. 1531
C. 1537
D. 1546
D. 1546
Given the following conditions:
* Unit 1 is currently shutdown for a refueling outage
* The Reactor Head studs have been detensioned
* The RCS level 35 feet
* Time since reactor shutdown is 250 hours
* Reactor Coolant System (RCS) temperature is 95º F
Subsequently:
* All Shutdown Cooling (SDC) flow was lost due to a piping rupture just downstream of the SDC Heat Exchanger
* 1-AOP-03.02, Shutdown Cooling Abnormal Operations was entered
Which ONE of the following describes the calculated Time to Boil in accordance with 1-AOP-03.02, Attachment 1, Estimated Time to Core Boiling?
The Time to Boil is approximately ________ minutes.
REFERENCE PROVIDED
A. 23
B. 30
C. 33
D. 42
B. 30
Given the following conditions:
* Unit 1 is at 100% power
Subsequently:
* Annunciator S-6, CCW Surge Tank Compartment “A” Level Low ALARMS
* Annunciator S-16, CCW Surge Tank Compartment “B” Level Low ALARMS
* 1-AOP-14.01, Component Cooling Water Abnormal Operations is entered
* LG-14-2A, CCW Surge Tank Level indicates 29 inches and SLOWLY LOWERING
* LG-14-2B, CCW Surge Tank Level indicates 29 inches and SLOWLY LOWERING
* LCV-14-1, Demin Water to CCW Surge Tank, is CLOSED
Which ONE of the following completes the statements below?
In accordance with 1-AOP-14.01, if V14103, LCV-14-1 Bypass Valve is mechanically bound closed and will not operate; the crew is required to FIRST attempt to locally align the _____(1)_____ Header to restore CCW Surge Tank Level.
The CCW “N” Header Isolation Valves _____(2)_____ AUTOMATICALLY CLOSE.
A.
(1) Fire Water
(2) will
B.
(1) Fire Water
(2) will NOT
C.
(1) Service Water
(2) will
D.
(1) Service Water
(2) will NOT
B.
(1) Fire Water
(2) will NOT
Given the following conditions:
* Unit 2 has experienced a LOCA
* PORV 1474 is stuck OPEN
* 2-EOP-01, SPTA is in progress
* Containment Pressure is 7.2 psig and RISING
* Containment Temperature is 203 °F and RISING
Which ONE of the following completes the statements below?
If the US asks the RO to report current RCS pressure, the RO is required to answer ____(1)____.
In accordance with 2-EOP-01, the Crew is required to CLOSE ____(2)____
REFERENCE PICTURES PROVIDED
A.
(1) 1504 psia
(2) BOTH the Block Valve AND OVERRIDE the PORV
B.
(1) 1504 psia
(2) EITHER the Block Valve OR OVERRIDE the PORV
C.
(1) 1506 psia
(2) BOTH the Block Valve AND OVERRIDE the PORV
D.
(1) 1506 psia
(2) EITHER the Block Valve OR OVERRIDE the PORV
A.
(1) 1504 psia
(2) BOTH the Block Valve AND OVERRIDE the PORV
Given the following conditions:
* Unit 1 is at 100% power
* A total loss of feedwater event occurred
* The Reactor Protection System FAILED TO AUTOMATICALLY TRIP the reactor when trip conditions were present
Which ONE of the following completes the statements below?
With NO operator actions, Reactor Power 5 minutes after the ATWS will be ____(1)____ Reactor Power just before the ATWS occurred.
The FSAR credits the ____(2)____ to mitigate a complete loss of feedwater with ATWS accident.
A.
(1) lower than
(2) Diverse Scram System
B.
(1) lower than
(2) Pressurizer Safety Valves
C.
(1) approximately the same as
(2) Diverse Scram System
D.
(1) approximately the same as
(2) Pressurizer Safety Valves
A.
(1) lower than
(2) Diverse Scram System
Given the following conditions:
* Unit 1 has experienced a SGTR
* 1-EOP-04, SGTR is in progress at step 10 INITIATE lowering RCS Temperature
Which ONE of following completes the statement below?
Isolate the ruptured S/G when the RCS is cooled down to a procedurally directed ____(1)____ less than ____(2)____, in accordance with 1-EOP-04.
A.
(1) Thot
(2) 510 °F
B.
(1) Thot
(2) 500 °F
C.
(1) REP CET
(2) 510 °F
D.
(1) REP CET
(2) 500 °F
A.
(1) Thot
(2) 510 °F
Which ONE of the following completes the statement below?
A CAUTION in 2-EOP-10, Station Blackout (SBO), states the following:
Do NOT Restart ____(1)____; if power is from ___(2)___, to prevent exceeding component amperage limits
A.
(1) ICW Pumps (ONLY)
(2) the Station Blackout Crosstie
B.
(1) ICW Pumps (ONLY)
(2) the ONLY operating EDG on Unit 1
C.
(1) ICW or CCW Pumps
(2) the Station Blackout Crosstie
D.
(1) ICW or CCW Pumps
(2) the ONLY operating EDG on Unit 1
D.
(1) ICW or CCW Pumps
(2) the ONLY operating EDG on Unit 1
Given the following timeline:
HH:MM:SS
00:00:00 Unit 1 tripped from 100% due to a LOCA
1A, 1B and 1C Charging Pumps are running post trip
00:03:00 SIAS Actuates
00:05:00 A Loss of Offsite Power (LOOP) occurs
00:05:10 Both the 1A and 1B EDGs have started and output breakers are CLOSED
Which ONE of the following completes the statements below?
At time 00:05:10, 1A/1B HPSI pumps ____(1)____ running and 1C Charging Pump is
NOT running due to ____(2)___ .
A.
(1) are
(2) load sequencing timer
B.
(1) are
(2) RTGB Control Switch Position
C.
(1) are NOT
(2) load sequencing timer
D.
(1) are NOT
(2) RTGB Control Switch Position
C.
(1) are NOT
(2) load sequencing timer
Given the following conditions:
* Unit 2 is at 100% power
* LIC-9023A, B S/G Level Safety Channel is bypassed
* Pressurizer Level Control is in the “X” position
Subsequently:
* Containment Evacuation alarm sounds
* BRCO reports “Multiple alarms”
* Trip Circuit Breakers (TCB) Indications as follows:
o TCBs 1, 2, 5 and 6 OPEN
o TCBs 3, 4, 7, and 8 CLOSED
Which ONE of the following describes (1) the event that occurred and (2) what component will require manual control?
A.
(1) Loss of the 2A 125V Vital DC Bus
(2) Pressurizer Level Control System
B.
(1) Loss of the 2A 125V Vital DC Bus
(2) Steam Generator Water Level Control System
C.
(1) Loss of the 2MA 120VAC Instrument Bus
(2) Pressurizer Level Control System
D.
(1) Loss of the 2MA 120VAC Instrument Bus
(2) Steam Generator Water Level Control System
C.
(1) Loss of the 2MA 120VAC Instrument Bus
(2) Pressurizer Level Control System
Given the following conditions:
* Unit 1 is at 100% power
* The 1AB busses are aligned to the “A” train
Subsequently:
* The Unit tripped
* A loss of the 1A DC bus occurs
* 1-EOP-01, Standard Post Trip Actions is in progress
Which ONE of the completes the statements below?
IAW 1-EOP-01, the 1AB DC bus will be re-energized from the ____(1)____.
Feedwater flow to the 1A S/G will be restored using the ____(2)____.
A.
(1) 1B DC bus
(2) 1B AFW Pump via the AFW cross-tie valves
B.
(1) 1B DC bus
(2) 1C AFW Pump
C.
(1) 1AB Battery Charger
(2) 1B AFW Pump via the AFW cross-tie valves
D.
(1) 1AB Battery Charger
(2) 1C AFW Pump
B.
(1) 1B DC bus
(2) 1C AFW Pump
Given the following conditions:
* Unit 2 tripped due to a SGTR
* 2-EOP-04, SGTR is in progress
* SIAS has actuated
* NPO reports the following Intake Cooling Water (ICW) parameters:
o “A” Turbine Cooling Water (TCW) Hx flowrate is 6000 gpm
o “B” Turbine Cooling Water (TCW) Hx flowrate is 0 gpm
IAW 2-EOP-99, Table 1, SIAS SIGNAL, the crew is required to ____(1)____ ISOLATION VALVE.
____(2)____ will experience a temperature change due to the ICW alignment.
A.
(1) OPEN MV-21-2, HEADER B
(2) Instrument Air Compressors
B.
(1) OPEN MV-21-2, HEADER B
(2) Circulating Water Pump seal coolers
C.
(1) CLOSE MV-21-3, HEADER A
(2) Instrument Air Compressors
D.
(1) CLOSE MV-21-3, HEADER A
(2) Circulating Water Pump seal coolers
C.
(1) CLOSE MV-21-3, HEADER A
(2) Instrument Air Compressors
Given the following conditions:
* Unit 1 is at 100% power
* Instrument Air Pressure, Pl-18-9, is 97 psig, slowly LOWERING
Which ONE of the following completes the statements below, in accordance with 1-AOP-18.01, Instrument Air Malfunction, if Instrument Air header pressure continues to LOWER?
The Unit to Unit cross-tie from Unit 2 will OPEN at a setpoint of ____(1)____.
1-AOP-18.01 states the following: “IF Instrument Air header pressure indicates less than ____(2)____ and lowering, THEN PERFORM the following: A. TRIP reactor. B. GO TO 1-EOP-01, Standard Post Trip Actions.
A.
(1) 95 psig
(2) 75 psig
B.
(1) 95 psig
(2) 60 psig
C.
(1) 85 psig
(2) 75 psig
D.
(1) 85 psig
(2) 60 psig
D.
(1) 85 psig
(2) 60 psig
Given the following conditions:
* Unit 2 has tripped from 100% power
* 2-EOP-01, SPTAs are complete
* 2-EOP-02, Reactor Trip Recovery has been entered
Which ONE of the following completes the statement below?
IAW 2-EOP-02, the crew is required to maintain RCS Tavg between ________.
A. 505 and 515 °F
B. 515 and 525 °F
C. 525 and 535 °F
D. 535 and 545 °F
C. 525 and 535 °F
Given the following conditions:
10:00
Unit 2 was tripped due to an Excess Steam Demand Event (ESDE) inside Containment
10:01
the crew recognized that the ESDE in progress was from the 2A S/G
10:09
the crew FIRST noticed 2A S/G had reached dryout by observing the Tcold trend below:
Which ONE of the following completes the statements below in accordance with the requirements of ADM-11.16, Transient Procedure Use and Adherence, Section 4.3.1.N, RCS Temperature Stabilization Guidance following an ESDE?
The crew is required to establish a pressure band on the 2B S/G of ____(1)____.
Stabilization of the 2B S/G was required to be commenced____(2)____.
REFERENCE PROVIDED (GRAPH ABOVE)
A.
(1) 300-350 psia
(2) as soon as the crew verified that ONLY the 2A S/G is faulted
B.
(1) 300-350 psia
(2) when the ESDE was terminated, or the 2A S/G was blown dry
C.
(1) 525-575 psia
(2) as soon as the crew verified that ONLY the 2A S/G is faulted
D.
(1) 525-575 psia
(2) when the ESDE was terminated, or the 2A S/G was blown dry
B.
(1) 300-350 psia
(2) when the ESDE was terminated, or the 2A S/G was blown dry
Given the following conditions:
* Unit 1 is at 100% power
* AB Busses are aligned to the “B” train
* 1AA Battery Charger is OOS
Subsequently:
* 1A Battery Charger trips
* 1-AOP-50.08, Loss of 125 VDC Station Battery Charger has been entered
* The crew completes the following actions:
* 1AB Charger is aligned to the 1AB DC Bus
* Divorced the 1AB DC Bus from the 1B DC bus by opening 60135, TIE 1AB-1A (“inside”) and 60130, TIE 1A-1AB (“outside”)
Which ONE of the following completes the statements below?
TS 3.8.2.3 – DC Distribution – Operating, Surveillance Requirement 4.8.2.3.1, D.C. bus train shall be determined OPERABLE and energized, is required to be performed within a MAXIMUM of ____(1)____.
In accordance with 1-AOP-50.08, the operator is required to FIRST CLOSE
____(2)____ breakers to now align the 1AB DC Bus to 1A DC bus.
A.
(1) 30 minutes
(2) 60135, TIE 1AB-1A (“inside”) THEN 60130, TIE 1A-1AB (“outside”)
B.
(1) 30 minutes
(2) 60130, TIE 1A-1AB (“outside”) THEN 60135, TIE 1AB-1A (“inside”)
C.
(1) 1 hour
(2) 60135, TIE 1AB-1A (“inside”) THEN 60130, TIE 1A-1AB (“outside”)
D.
(1) 1 hour
(2) 60130, TIE 1A-1AB (“outside”) THEN 60135, TIE 1AB-1A (“inside”)
D.
(1) 1 hour
(2) 60130, TIE 1A-1AB (“outside”) THEN 60135, TIE 1AB-1A (“inside”)
Given the following conditions:
* Unit 2 is at 100% power
Subsequently:
* CEA #1, Reg Group 5 dropped to the bottom of the core
* 2-AOP-66.01, Dropped or Misaligned CEA Abnormal Operations is in progress
Which ONE of the following completes the statements below?
The Core Mimic (Display 6801) for CEA #1 would indicate ____(1)____.
During the recovery of CEA #1, CEA Motion Inhibit (CMI) ____(2)____ be required to be bypassed.
A.
(1) GREEN
(2) will
B.
(1) GREEN
(2) will NOT
C.
(1) ORANGE
(2) will
D.
(1) ORANGE
(2) will NOT
C.
(1) ORANGE
(2) will
Given the following conditions:
* Unit 2 is performing a Reactor Startup in accordance with 2-GOP-302, Reactor
Plant Startup – Mode 3 to Mode 2 at Step 4.5.2, Critical Approach
* Below is the listed initial power levels power to commence approach to criticality
and the power when the reactor was announced critical
SU Channel BF3 (CPS)
WRNI (% Power)
INITIAL
A 50 B 50
A 3 x 10-8 B 3 x 10-8
CRITICAL
A 3200 B 400
A 4 x 10-7 B 3 x 10-7
Which ONE of the following describes the status of the BF3 detectors and can the
startup continue?
SU Channel ____(1)____ is indicating AS EXPECTED.
In accordance with 2-GOP-302, the Reactor Startup ____(2)____ continue?
A.
(1) A ONLY
(2) can
B.
(1) A ONLY
(2) can NOT
C.
(1) B ONLY
(2) can
D.
(1) B ONLY
(2) can NOT
A.
(1) A ONLY
(2) can
Given the following conditions:
* Unit 1 is at 11% power
* The condenser has developed a small air leak
* The crew has entered 1-AOP-12.01, Loss of Condenser Vacuum
* Condenser vacuum indicates 3.5 inHgA and DEGRADING
Which ONE of the following completes the statements below?
In accordance with 1-AOP-12.01, the crew is required to trip the turbine at a setpoint of ____(1)____ inHgA. If the vacuum continues to degrade, the Steam Bypass Control System will become unavailable at a setpoint of ____(2)____ inHgA.
A.
(1) 5.9
(2) 8.859
B.
(1) 5.9
(2) 12
C.
(1) 8.5
(2) 8.859
D.
(1) 8.5
(2) 12
D.
(1) 8.5
(2) 12
Given the following conditions:
* Unit 1 automatically tripped due to a Small Break LOCA
* The crew is performing the actions of 1-EOP-01, SPTAs
Subsequently:
* RIS-26-3-1, Channel #3 Containment Isolation Radiation Monitor Hi Hi alarm
condition occurs
* The extra RCO is performing the actions of 1-AOP-26.02, Area Radiation
Monitors
Which ONE of the following completes the statement below?
In accordance with 1-AOP-26.02 step 4.2.2.4.A, verifying alarm validity, the BLUE fail
safe light ____(1)____ LIT for a VALID alarm.
RIS-26-3-1 utilizes a ____(2)____ detector.
A.
(1) is
(2) Scintillation
B.
(1) is
(2) Geiger-Mueller
C.
(1) is NOT
(2) Scintillation
D.
(1) is NOT
(2) Geiger-Mueller
B.
(1) is
(2) Geiger-Mueller
Given the following conditions:
* Unit 1 tripped due to a LOOP
* ALL AFW has been LOST
* 1-EOP-06, Total Loss of Feed has been entered
Subsequently:
* Offsite power has been restored to the “B” train
* Annunciator A-3, 6.9 kV Swgr 1B1 Δ Current Trip is LIT
Which ONE of the following completes the statements below?
In accordance with 1-EOP-06, the ____(1)____ pump will be FIRST used to restore Feedwater flow.
In order to successfully establish Once Through Cooling ____(2)____ Pump(s) is/are required to be running.
A.
(1) 1B Condensate
(2) ALL available Charging (NO HPSI)
B.
(1) 1B Condensate
(2) at Least 1 High Pressure Safety Injection (HPSI)
C.
(1) 1B Main Feed Water
(2) ALL available Charging (NO HPSI)
D.
(1) 1B Main Feed Water
(2) at Least 1 High Pressure Safety Injection (HPSI)
B.
(1) 1B Condensate
(2) at Least 1 High Pressure Safety Injection (HPSI)