ML15181A229

Initial Exam 2015-301 Final RO Written Exam

ML15181A229
Person / Time
Site:	Catawba
Issue date:	06/30/2015
From:	Eugene Guthrie Division of Reactor Safety II
To:	Sloan S Division of Inspection and Regional Support
References
Download: ML15181A229 (80)

Text

Catawba Initial Exam 2015-301 Final RO Written Exam (ML15181A229)

The final "as-administered" written exam contained within this ADAMS package contains a revised question count and answer key.

Details concerning NRC acceptance of this version of the "as-administered" Catawba RO Written Exam as the final exam can be found in Exam Report 05000413/2015301, 05000414/2015301 (ML15194A281). Additional consideration for the Catawba 2015-301 Final RO Written Exam was necessary due to an exam administration error.

Removed - Pages 1 and 2 and replaced with this page.

Catabwa Nuclear Station Question: 1 ILT15 CNS RO NRC Examination (1 point)

Deleted Page 1 of75

Catabwa Nuclear Station Question: 2 ILT15 CNS RO NRC Examination (1 point)

Given the following:

• Unit 1 has experienced a Reactor Trip and Safety Injection due to a Small-Break LOCA

• The crew has just completed the actions of EP/1/A/5000/E-O (Reactor Trip or Safety Injection)

• NV pump flow to the NC system Cold Legs is 390 GPM

• NC system pressure is 1350 PSIG and STABLE

• SG pressures are 1092 PSIG and STABLE

• NC system subcooling on the ICCM is 22°F and STABLE Upon transition to EP/1/A/5000/E-1 (Loss of Reactor or Secondary Coolant), which ONE of the following completes the statements below?

NC pumps_ _ (1 )_ _be in service AND Steam Generators___(2)_ _be required for heat removal.

A. 1. will

2. will B. 1. will

2. will NOT C. 1 . will NOT

2. will D. 1. will NOT

2. will NOT Page2 of75

Catabwa Nuclear Station Question: 3 ILTJ 5 CNS RO NRC Examination (1 point)

Given the following:

• Unit 1 is in Mode 3

• Rod control is capable of rod withdrawal.

• NC loops 1A, 18, and 10 are in operation.

• The crew has entered AP/1/A/5500/008 (Malfunction of Reactor Coolant Pump)

• 1A NC Pump lower bearing temperature is currently 190°F and increasing 5°F per minute Which ONE of the following completes/answers the statements below?

(1) 1A NC Pump lower bearing temperature will reach trip setpoint in (2) What is the specified Completion Time of the action required by TS 3.4.5 (RCS Loops- MODE 3) following the trip of 1A NCP?

A. 1. 7 minutes

2. immediately B. 1. 7 minutes

2. 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> C. 1. 1 minute

2. immediately D. 1. 1 minute

2. 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> Page3 of75

Catabwa Nuclear Station Question: 4 ILT15 CNS RO NRC Examination (1 point)

Given the following:

• Unit 1 is in Reduced Inventory following refueling

• AP/1/A/5500/019 (Loss of Residual Heat Removal System) has been entered following the loss of 1B ND Pump

• The crew has transitioned to Enclosure 8 (Restoring an ND Train to Operation),

started 1A ND pump, and reached the following table to determine maximum allowed flow:

NC Level Maximum Allowed ND Flowrate Greater than or equal to 39% 3000GPM Greater than or equal to 24% 2000GPM Greater than or equal to 15% 1500GPM Greater than or equal to 11 % 1000GPM Which ONE of the following completes the statement below?

The crew will NOT exceed a MAXIMUM ND flowrate of___(1 )___in order to prevent 1A ND Pump (2) _ _

A. 1. 1500 gpm

2. runout B. 1. 1500gpm

2. cavitation C. 1. 2000 gpm

2. runout D. 1. 2000 gpm

2. cavitation Page4 of75

Catabwa Nuclear Station Question: 5 ILT15 CNS RO NRC Examination (1 point)

Given the following:

• Unit 1 is at 100% RTP

• 1A1 KC Pump is in service

• 1B NV Pump is in service

• OAC Alarm C 102215 (KC Train A Low-Low Level Surge Tank lsol) is actuated due to an instrument failure Following the receipt of the OAC alarm, and assuming no operator action, which ONE of the following completes the statements below?

1RN-291 (KC Hx 1A Outlet Throttle Valve) will throttle in the (1)_ _

direction in order to maintain KC system temperature.

1B NV Pump motor bearing temperatures will (2) _ _

A. 1. open

2. increase B. 1. open

2. remain constant C. 1. closed

2. increase D. 1. closed

2. remain constant Pages of75

Catabwa Nuclear Station Question: 6 ILT15 CNS RO NRC Examination (1 point)

Given the following:

• Unit 1 is at 100% RTP

• A DCS malfunction has caused an Alternate Action on SPP-1 (Selected PZR Pressure-1)

Subsequently:

• The Main Turbine trips

• The Reactor does NOT trip automatically or manually

• The crew has entered EP/1/A/5000/FR-S.1 (Response to Nuclear Power Generation/ATWS)

Which ONE of the following completes the statements below?

As NC pressure increases, 1NC-328 (PZR PORV) (1 )_ _

automatically open.

FR-S.1 contains guidance to ensure PZR pressure remains below the PORV setpoint in order to (2)_ _

A. 1. will

2. ensure sufficient boration flow B. 1. will

2. prevent challenging PZR Safety Valves C. 1. will NOT

2. ensure sufficient boration flow D. 1. will NOT

2. prevent challenging PZR Safety Valves Page6 of75

Catabwa Nuclear Station Question: 7 ILTJ 5 CNS RO NRC Examination (1 point)

Given the following:

• A tube rupture has occurred on 1A SIG.

• The crew has just completed the immediate actions of EPl11A/50001E-O (Reactor Trip or Safety Injection).

• Current 1A SIG NR level is 35%.

• 1 B, 1C and 1 D SIG NR levels are 23%.

• Total CA flow is approximately 1000 gpm.

• The RO has depressed the "CA SYS VLV CTRL TRN A" and "CA SYS VLV CTRL TRN B" reset buttons.

• "CA SYS VLV CTRL TRN A" reset light is DARK.

• "CA SYS VLV CTRL TRN B" reset light is LIT.

Which ONE of the following completes the statements below?

CA flow to 1A SIG using the flow control valve _ _ _(1 )_ _under operator control AND EPl11A/50001E-0_ _ _ (2)_ _ permit closure of the flow control valve to 1A SIG at this time.

A. 1. is

2. does B. 1. is

2. does NOT C. 1. is NOT

2. does D. 1. is NOT

2. does NOT Page7 of75

Catabwa Nuclear Station Question: 8 ILT15 CNS RO NRC Examination (1 point)

Given the following:

• A Feed Line Break has occurred on Unit 2

• 2A SIG pressure is 600 PSIG and decreasing

• 2B, 2C and 20 SIG pressures are 860 PSIG and decreasing

• Containment pressure is 2.8 PSIG and increasing

• NC system T avg is 565°F and decreasing

• NC system pressure is 1980 PSIG and decreasing Based on the conditions above, which ONE of the following completes the statements below?

A Feed Water Isolation signal___(1) _ _been generated.

A Main Steam Isolation signal._ _(2)_ _been generated.

A 1. has

2. has NOT B. 1. has NOT

2. has C. 1. has

2. has D. 1. has NOT

2. has NOT Page8 of75

Catabwa Nuclear Station Question: 9 ILT15 CNS RO NRC Examination (1 point)

Given the following:

• Both units have experienced a Loss of Offsite Power (LOOP)

• No backup Diesel VI compressor is available

• EPl11A/50001ECA-O.O (Loss of All AC Power) was implemented on Unit 1 and the crew has just transitioned to EPl11A/50001ECA-0.1 (Loss of All AC Power Recovery Without Sii Required)

Current conditions:

• 30 minutes have elapsed since the LOOP

• NC T hots are STABLE

• SIG pressures are STABLE at 725 PSIG

• SIG levels are decreasing and approaching 11 % NR

• NC Tcolds are 490°F and STABLE

• VI header pressure is 0 PSIG Based on the indications above, which ONE of the following completes the statements below?

Natural Circulation flow_ __,(....-1)....___been established.

In accordance with ECA-0.1, the Operators will (2)

REFERENCE PROVIDED A. 1. has

2. increase CA flow using flow controllers in the control room B. 1. has

2. increase CA flow by notifying AO to throttle CA valves locally C. 1. has NOT

2. increase dumping steam using SM PORV controllers on main control board AND increase CA flow using flow controllers in the control room D. 1. has NOT

2. dispatch an operator to locally increase flow from the SM PO RVs AND increase CA flow by notifying AO to throttle CA valves locally Page9 of75

Catabwa Nuclear Station Question: 10 ILTJ 5 CNS RO NRC Examination (1 point)

Given the following:

• Unit 1 tripped from 100% RTP due to a Loss of Offsite Power

• NC cooldown is currently in progress in accordance with EP/1/A/5000/ES-0.2 (Natural Circulation Cooldown)

• The trend of NC Temperature is as follows:

Time 0800 0830 0900 NC Temoerature 535°F 495°F 455°F In accordance with ES-0.2, which ONE of the following completes the statements below?

NC Temperature will be determined by monitoring of_(1)__. At 0900, the required cooldown rate _ _ _ _ _ _ (2) _ _been exceeded.

A 1. NC Tave

2. has B. 1. NC Tave

2. has NOT C. 1. NC Tcolds

2. has D. 1. NC Tcolds

2. has NOT Page 10 of75

Catabwa Nuclear Station Question: 11 ILT15 CNS RO NRC Examination (1 point)

Given the following:

• Unit 1 is at 100% RTP

• 1ERPA is de-energized

• The crew has entered APl11A/55001029 (Loss of Vital or Aux Control Pwr)

Which ONE of the following completes the statements below?

In accordance with APl29, an operator will be dispatched to 1A DIG room because (1) _ _

Entry conditions of APl1 IA/55001016 (Malfunction of Nuclear Instrumentation System) (2) been met.

A. 1 . DIG control power has been lost

2. have B. 1. DIG control power has been lost

2. have NOT C. 1. DIG Day Tank auto makeup capability has been lost

2. have D. 1. DIG Day Tank auto makeup capability has been lost

2. have NOT Page 11 of75

Catabwa Nuclear Station Question: 12 ILT15 CNS RO NRC Examination (1 point)

Given the following:

• Unit 1 is at 100% RTP

• The 125 VDC/120 VAC Auxiliary Control Power System is in normal alignment

• The supply breaker from 1CDA to Static Inverter 1KXIA trips open Which ONE of the following completes the statements below?

Alternate power to 1KXPA will be ___(1) __ aligned.

The crew can verify 1KXPA is energized by observing that (2) _ _

A. 1. manually

2. NC pump vibration monitor is IN SERVICE B. 1. automatically

2. NC pump vibration monitor is IN SERVICE C. 1. manually

2. individual P-11 Channel 1 status light on 1Sl-7 is LIT D. 1. automatically

2. individual P-11 Channel 1 status light on 1Sl-7 is LIT Page 12 of75

Catabwa Nuclear Station Question: 13 ILT15 CNS RO NRC Examination (1 point)

Given the following:

• Units 1 & 2 are at 100% RTP

• 1A RN pump is in service

• 1A and 2A KC trains are in service Subsequently:

• "A" RN Pit intake screen becomes clogged

• The crew has entered AP/O/A/5500/020 (Loss of Nuclear Service Water), Case II (Loss of RN Pit Level)

Which ONE of the following completes the statements below?

Enclosure 2 (RN Valve Alignment for RN Swap to SNSWP) will direct the BOP to ensure (1) is closed .

Following system stabilization, the BOP is directed to "Ensure KC Hx Outlet Mode Switches - Properly Aligned". In response, the BOP (2)_ _

reposition 1RN-291 (KC Hx 1A Outlet Throttle Valve) from its original alignment.

A 1. 1RN-47A (RN Supply X-Over lsol)

2. will B. 1. 1RN-47 A (RN Supply X-Over lsol)

2. will NOT C. 1. 1RN-48B (RN Supply X-Over lsol)

2. will

0. 1. 1RN-48B (RN Supply X-Over lsol)

2. will NOT Page 13 of75

Catabwa Nuclear Station Question: 14 ILTJ 5 CNS RO NRC Examination (1 point)

Given the following:

• Both units are at 100% RTP

• VI pressure is decreasing

• The crew has entered AP/O/A/5500/022 (Loss of Instrument Air)

In accordance with AP/22, which ONE of the following completes the statement below?

An operator will be dispatched to align air cylinders to operating compressors if VI pressure decreases below a MAXIMUM of (1) in order to

_ _ (2) _ _

A 1. 60 psig

2. provide a backup VI supply B. 1. 60 psig

2. prevent compressor damage C. 1. 76 psig

2. provide a backup VI supply D. 1. 76 psig

2. prevent compressor damage Page 14 of75

Catabwa Nuclear Station Question: 15 ILT15 CNS RO NRC Examination (1 point)

Given the following:

• Unit 1 is at 100% RTP

• Operators are controlling the Main Generator Voltage Regulator in MANUAL because it is not functioning correctly in AUTO

• An electrical grid disturbance results in the Main Generator operating with a power factor of 0.8 lagging Which ONE of the following completes the statements below?

Based on the conditions above, to return the Main Generator to a 0.99 lagging power factor, AP/1/A/5500/037 (Generator Voltage and Electrical Grid Disturbances) directs the operators to use the Main Generator Voltage Regulator (1) pushbutton.

The concern with operating the Main Generator at a 0.8 lagging power factor is overheating of the generator (2) _ _

REFERENCE PROVIDED A. 1. RAISE

2. core end B. 1. RAISE

2. field windings C. 1. LOWER

2. core end D. 1. LOWER

2. field windings Page 15 of75

Catabwa Nuclear Station Question: 16 ILT15 CNS RO NRC Examination (1 point)

Given the following:

• A LOCA outside containment has occurred on Unit 1

• NC subcooling is 0°F.

• The crew has entered EP/1/A/5000/ECA-1.2 (LOCA Outside Containment)

Which ONE of the following completes the statements below?

Containment Phase A lsolation ___ (1 )_ _automatically occurred.

In accordance with ECA-1.2, the parameter used to verify that the LOCA has been isolated is (2)_ _

A. 1. has NOT

2. pressurizer level B. 1. has NOT

2. NC pressure C. 1. has

2. pressurizer level D. 1. has

2. NC pressure Page 16 of75

Catabwa Nuclear Station Question: 17 ILTJ 5 CNS RO NRC Examination (1 point)

Given the following:

• Unit 1 was operating at 100% RTP when the 1A SIG faulted inside Containment

• Containment pressure peaked at 2. 7 psig and is now slowly decreasing

• The crew has implemented EP/1/A/5000/FR-H.1 (Response to Loss of Secondary Heat Sink)

• All attempts to restore CA flow have been unsuccessful In accordance with FR-H.1, which ONE of the following completes the statements below?

The NEXT source of feed water attempted for restoration of flow to the S/Gs is through the CM/CF system using (1 )_ _

The crew will be required to establish bleed and feed when W/R level in at least 3 S/Gs is less than a MAXIMUM level of (2)_ __

A. 1. either Main Feed Water pump

2. 24%

B. 1. either Main Feed Water pump

2. 36%

C. 1. Hotwell and Booster pumps

2. 24%

D. 1. Hotwell and Booster pumps

2. 36%

Page 17 of75

Catabwa Nuclear Station Question: 18 ILT15 CNS RO NRC Examination (1 point)

Which ONE of the following is a complete list of the reasons for the reactor operator performing a controlled depressurization of the Steam Generators (SGs) during the performance of EP/1/A/5000/ECA-1.1, (Loss of Emergency Coolant Recirculation)?

List of Reasons

1. Minimize NC dilution potential in case of a subsequent tube rupture

2. To establish conditions for injection of the Cold Leg accumulators

3. Minimize reactor coolant flow from the LOCA

4. To establish conditions for ND system operation A. 1 and 2 ONLY B. 3 and 4 ONLY C. 1, 2, and 3 ONLY D. 2, 3, and 4 ONLY Page 18 of75

Catabwa Nuclear Station Question: 19 ILTJ 5 CNS RO NRC Examination (1 point)

Given the following:

• The crew is responding to a continuous rod withdrawal on Unit 1 per AP/1/A/5500/015 Case 2, Continuous Rod Motion

• Control rods have been placed in manual and rod motion has stopped

• Boron is being added with 1A boric acid transfer pump to return Tavg to Tref Subsequently:

• 1ETA experiences a loss of power

• The blackout sequencer re-energized 1ETA Which choice states the minimum action(s), if any, required to be completed before the operator can secure the 1A boric acid transfer pump using its control switch?

A Reset the 1A diesel generator sequencer and then reset the 1A boric acid transfer pump B. Reset the 1A diesel generator sequencer C. Reset the 1A boric acid transfer pump D. No additional actions are required Page 19 of75

Catabwa Nuclear Station Question: 20 ILTJ 5 CNS RO NRC Examination (1 point)

Which ONE of the following completes the statements below?

In accordance with SLC 16.9-19 (Refueling Operations-Manipulator Crane),

the overload cutoff limit for the Reactor Building Manipulator crane is required to be less than or equal to (1) pounds.

The reason for the manipulator crane overload limits it to prevent damage to the

_ _(2) _ _

A. 1. 2900

2. Core Internals B. 1. 3250

2. Core Internals

c. 1. 2900

2. Refueling Bridge D. 1. 3250

2. Refueling Bridge Page20 of75

Catabwa Nuclear Station Question: 21 ILTJS CNS RO NRC Examination (1 point)

Given the following:

• A Steam Generator Tube Leak has occurred on Unit 2

• All NC pumps are running

• The crew is preparing to depressurize the NC system to minimize subcooling Which ONE of the following sets of operating conditions will result in the LEAST Primary-to-Secondary leakage?

~~s Iim12iciiltuci ~~s eci111uci A. 504°F 770 PSIG B. 512°F 826 PSIG C. 516°F 855 PSIG D. 524°F 885 PSIG Page21 of75

Catabwa Nuclear Station Question: 22 ILT15 CNS RO NRC Examination (1 point)

Given the following:

• Unit 2 is at 50% Power.

• The crew enters AP/2/A/5500/023 (Loss of Main Condenser Vacuum) due to decreasing vacuum.

The following conditions are noted:

Time 1257 1258 1259 1300 A Cond. Vacuum 23.2" 22.0" 21.7" 21.5" B Cond. Vacuum 24.0" 22.6" 21.9" 21.7" C Cond. Vacuum 24.3" 22.9" 22.3" 22.0" Based upon the above information, which ONE of the following describes:

1) The latest time the crew must take action(s) PRIOR to exceeding the turbine trip setpoint?

2) The action(s) the crew must take?

A. 1. 1258

2. Trip the Turbine and Reactor B. 1. 1258

2. Trip the Turbine ONLY C. 1. 1259

2. Trip the Turbine and Reactor D. 1. 1259

2. Trip the Turbine ONLY Page22 of75

Catabwa Nuclear Station Question: 23 ILT15 CNS RO NRC Examination (1 point)

Given the following:

• The Control Room has been evacuated due to toxic gas Following Control Room evacuation, per AP/1 /Af5500/017 (Loss of Control Room),

which ONE of the following completes the statements below?

Reactor shutdown condition can be verified by monitoring of (1)_ __

Shutdown margin will be maintained by use of the (2)_ _

A. 1. Source Range instrumentation

2. Standby Makeup Pump B. 1. Source Range instrumentation

2. Boric Acid Transfer Pumps C. 1. Wide Range Neutron instrumentation

2. Standby Makeup Pump D. 1. Wide Range Neutron instrumentation

2. Boric Acid Transfer Pumps Page23 of75

Catabwa Nuclear Station Question: 24 ILT15 CNS RO NRC Examination (1 point)

Given the following:

• Unit 1 is in Mode 3 at EOL.

• NC temperature is 557°F.

• NC system boron concentration is 2200 ppmB.

• NV letdown flow is 75 gpm.

• 1EMF-48 (NC Sample Line Reactor Coolant) Trip 2 alarm is LIT.

• 1EMF-18 (568 KK, 56 NC Filter 1A) countrate is increasing.

Chemjstrv report:s:

• Isotopic analysis shows high levels of Cobalt 60 is present in the NC system.

• Iodine concentration has remained stable since the unit was shutdown .

Which ONE of the following describes:

(1) The cause of the above conditions?

(2) The required action(s), in accordance with AP/1/A/5500/018, (High Activity in Reactor Coolant)?

A 1. Failed fuel

2. Ensure at least one mixed bed demineralizer is in service B. 1. Failed fuel

2. Isolate all demineralizers and place second NC filter in service C. 1. Crud burst

2. Ensure at least one mixed bed demineralizer is in service D. 1. Crud burst

2. Isolate all demineralizers and place second NC filter in service Page24 of75

Catabwa Nuclear Station Question: 25 ILT15 CNS RO NRC Examination (1 point)

Given the following:

• A Small-Break LOCA has occurred on Unit 1

• EP/1/A/5000/ES-1.2 (POST LOCA COOLDOWN AND DEPRESSURIZATION) has been implemented

• Containment pressure is 2.8 PSIG and STABLE In accordance with ES-1.2, which ONE of the following completes the statements below?

The crew will FIRST attempt to establish an NC system cooldown using the

_ _(1)_ _

The crew will cooldown (2) _ _

A. 1. SM PORVs

2. as close as possible without exceeding 100°F in an hour B. 1. SM PORVs

2. at the maximum rate C. 1. Condenser Dumps

2. as close as possible without exceeding 100°F in an hour D. 1. Condenser Dumps

2. at the maximum rate Page25 of75

Catabwa Nuclear Station Question: 26 ILT15 CNS RO NRC Examination (1 point)

Given the following:

• A Small-Break LOCA has occurred on Unit 1

• Containment pressure is 1.2 PSIG

• NC system pressure is 400 PSIG

• EP/1/A/5000/FR-P.1 (Response To Imminent Pressurized Thermal Shock) has been implemented

• SI Termination criteria per FR-P.1 has been met Which ONE of the following completes the statement below?

To terminate Safety Injection, FR-P.1 directs the operator to reset

_ _ (1) and stop (2) _ _

A. 1. Safety Injection ONLY

2. both NI pumps and all but one NV pump ONLY B. 1. Safety Injection AND the Sequencers

2. both NI pumps, both ND pumps and all but one NV pump C. 1. Safety Injection AND the Sequencers

2. both NI pumps and all but one NV pump ONLY D. 1. Safety Injection ONLY

2. both NI pumps, both ND pumps and all but one NV pump Page26 of75

Catabwa Nuclear Station Question: 27 ILT15 CNS RO NRC Examination (1 point)

Given the following:

• Unit 1 has experienced a Large Break LOCA

• Containment pressure is 2.8 psig

• Containment radiation is indicating 30 R/Hr

• Containment sump level is 17 feet Which ONE of the following completes the statements below?

Entry requirements for___ (1 )_ _are currently met.

TS 3.3.3 (Post-Accident Monitoring Instrumentation) requires operability of

_ _ (2) _ __

A. 1. EP/1/A/5000/FR-Z.2 (Response to Containment Flooding)

2. Containment Radiation Instruments ONLY B. 1. EP/1/A/5000/FR-Z.2 (Response to Containment Flooding)

2. Containment Radiation AND Level Instruments C. 1. EP/1/A/5000/FR-Z.3 (Response to High Containment Radiation Level)

2. Containment Radiation Instruments ONLY D. 1. EP/1/A/5000/FR-Z.3 (Response to High Containment Radiation Level)

2. Containment Radiation AND Level Instruments Page27 of75

Catabwa Nuclear Station Question: 28 ILTI 5 CNS RO NRC Examination (1 point)

Given the following:

• 1A NCP #2 Seal has shown signs of degraded performance and engineering suspects failure may be imminent Which of the following alarms would confirm failure of the #2 NCP seal?

1A NCP Standpipe (1) level alarm.

1A NCP #1 Seal Leakoff (2) flow alarm.

A. 1. High

2. High B. 1. High

2. Low C. 1. Low

2. High D. 1. Low

2. Low Page28 of75

Catabwa Nuclear Station Question: 29 ILTJ 5 CNS RO NRC Examination (1 point)

Given the following:

• A malfunction of 1NV-224 (H2 Sup to VCT Press Reg Viv) has isolated the VCT Hydrogen supply Which ONE of the following completes the statements below?

As VCT pressure decreases, NCP #1 Seal leakoff flow will (1 )_ _

NV pump suction (2)_ _automatically transfer to the FWST as a result of low VCT pressure.

A. 1. decrease

2. will B. 1. decrease

2. will NOT C. 1. increase

2. will D. 1. increase

2. will NOT Page29 of75

Catabwa Nuclear Station Question: 30 ILT15 CNS RO NRC Examination (1 point)

Which ONE of the following completes the statement below?

The 1A Boric Acid Transfer Pump receives power from. _ _ __

A. SMXG B. 1EMXA C. 1EMXG D. 1MXW Page30 of75

Catabwa Nuclear Station Question: 31 ILTJ 5 CNS RO NRC Examination (1 point)

Given the following:

• The Unit 1 NC system is currently SOLID in Mode 5

• 1A ND is in service

• 1B ND is secured

• ND Letdown is in service

• The BOP has been directed to perform a 10°F heatup Which ONE of the following completes the statements below?

To commence heatup, the BOP will manually operate (1) _ _

In order to prevent exceeding LTOP limits during the heatup, the BOP will throttle 1NV-135 (ND Flow to Letdown HX) in the (2) direction.

A. 1. 1ND-26 (ND HX 1A Outlet CTRL)

2. open B. 1. 1ND-26 (ND HX 1A Outlet CTRL)

2. closed C. 1. 1ND-27 (ND HX 1A Bypass CTRL)

2. open D. 1. 1ND-27 (ND HX 1A Bypass CTRL)

2. closed Page31 of75

Catabwa Nuclear Station Question: 32 ILT15 CNS RO NRC Examination (1 point)

Given the following:

• Unit 1 has experienced a Reactor Trip and Safety Injection due to a Tube Rupture in the 1B S/G

• The crew is performing EP/1/A/5000/E-3 (Steam Generator Tube Rupture) o 1B S/G has been isolated o A plant cooldown has been initiated o The crew is preparing to depressurize the NC system o ALL NC pumps are in service Which ONE of the following completes the statements below?

During NC cooldown, 1B NC Hot Leg Temperature (Thot) will be (1)_ _

1C NC Hot Leg (Thot) Temperature.

During NC depressurization 1NC-27 (PZR Spray Ctrl Frm Loop A) will be

_ _(2) effective than 1NC-29 (PZR Spray Ctrl Frm Loop B)

A. 1 . equal to

2. less B. 1. higher than

2. less C. 1. equal to

2. more D. 1. higher than

2. more Page32 of75

Catabwa Nuclear Station Question: 33 ILT15 CNS RO NRC Examination (1 point)

Given the following:

• Unit 1 is in the process of drawing a bubble in the Pressurizer

• The following step is taken from OP/1/A/6100/001 (Controlling Procedure For Unit Startup) following actions to vent Nitrogen from the PZR as the bubble is formed:

3.44.4 WHE~ N 2 venting is complete, open a PZR PORV for 15 seconds to ensure pure steam exists in the PZR steam space, then close the PZR PORV.

Which ONE of the following completes the statements below?

In order to determine when Nitrogen venting is complete, the operators will verify (1 )_ _

If necessary to lower PRT pressure following this evolution, PRT level will be decreased by draining to the (2)_ __

A. 1. PRT temperature equalizes with PZR steam space temperature

2. Reactor Coolant Drain Tank B. 1. PRT temperature equalizes with PZR steam space temperature

2. Containment Floor and Equipment Sump C. 1. PRT level increases without a corresponding PRT pressure increase

2. Reactor Coolant Drain Tank D. 1. PRT level increases without a corresponding PRT pressure increase

2. Containment Floor and Equipment Sump Page33 of75

Catabwa Nuclear Station Question: 34 ILTJ 5 CNS RO NRC Examination (1 point)

Given the following:

• A LOCA has occurred inside Containment on Unit 1

• Containment pressure peaked at 3.2 psig Which ONE of the following completes the statements below?

The non-essential KC headers were automatically isolated by the

_ _ (1) signal.

Based on this alignment, Spent Fuel Pool temperature will (2) _ _

A. 1. Phase A

2. increase B. 1. PhaseA

2. decrease C. 1. Phase B

2. increase D. 1. Phase B

2. decrease Page34 of75

Catabwa Nuclear Station Question: 35 ILTJ 5 CNS RO NRC Examination (1 point)

Given the following:

• Unit 1 is at 100% RTP

• A slight cooldown of the NC system causes the "C" PZR heaters to be full "on"

• A malfunction of two PZR pressure transmitters causes an Alternate Action to occur on the Pressurizer Pressure Control System Assuming NO operator actions, which ONE of the following completes the statements below?

The PZR Pressure Master will be in ___(1 )___control AND "C" Heaters___ (2)___be energized.

A. 1. Manual

2. will B. 1. Manual

2. will NOT C. 1. Automatic

2. will D. 1. Automatic

2. will NOT Page35 of75

Catabwa Nuclear Station Question: 36 ILT15 CNS RO NRC Examination (1 point)

Given the following:

• Unit 2 is at 100% RTP

• 28 Pressurizer heaters are manually energized to promote mixing following unit start-up

• All plant parameters are at equilibrium

• A fault causes breaker 2LXH-6C (28 NC PZR Heater Power Panel PHP2B Feeder) to OPEN.

1) How will the output of the pressurizer master control change?

2) What is the system's response to the loss of heat input?

A. 1. Increase

2. Pressurizer Spray Valves will close prior to "A" & "D" Pressurizer Heaters energizing B. 1. Decrease

2. Pressurizer Spray Valves will close prior to "A" & "D" Pressurizer Heaters energizing C. 1. Increase

2. "A" & "D" Pressurizer Heaters will energize prior to Pressurizer Spray Valves closing D. 1. Decrease

2. "A" & "D" Pressurizer Heaters will energize prior to Pressurizer Spray Valves closing Page36 of75

Catabwa Nuclear Station Question: 37 ILTJ 5 CNS RO NRC Examination (1 point)

Which ONE of the following describes the impact on the Reactor Protection System for a loss of 125 VDC Panelboard 1EPA or 1EPD?

A. SSPS Logic Bay has lost one of two power supplies B. SSPS Output Bay has lost one of two power supplies C. The associated Reactor Trip Breaker cannot be opened by the UV trip D. The associated Reactor Trip Breaker cannot be opened by the Shunt trip Page37 of75

Catabwa Nuclear Station Question: 38 ILTJ 5 CNS RO NRC Examination (1 point)

Deleted Page38 of75

Catabwa Nuclear Station Question: 39 ILT15 CNS RO NRC Examination (1 point)

Deleted Page39 of75

Catabwa Nuclear Station Question: 40 ILT15 CNS RO NRC Examination (1 point)

Concerning the Containment Ventilation System, which ONE of the following completes the statements below?

Under normal conditions, Containment Ventilation Units are cooled by the

_ _(1) system.

Containment Ventilation cooling water supply is isolated by a (2)_ _

signal.

A. 1. YV

2. Phase A B. 1. YV

2. Phase B C. 1. RN

2. Phase A D. 1. RN

2. Phase B Page40 of75

Catabwa Nuclear Station Question: 41 ILT15 CNS RO NRC Examination (1 point)

Given the following:

• A S8LOCA has occurred on Unit 1

• NC System pressure is 1940 PSIG and lowering slowly

• Containment pressure is 2.3 PSIG and rising slowly Which ONE of the following completes the statement below?

NF (ICE CONDENSER) system valve(s) _ _ _will receive a signal to CLOSE.

COMPONENT LEGEND:

1NF-228A (Glycol Sup Cont lsol Otsd) 1NF-2338 (Glycol Ret Cont lsol) 1NF-234A (Glycol Ret Cont lsol)

A. 1NF-2338 ONLY

8. 1NF-228A and 1NF-2338 ONLY C. 1NF-228A and 1NF-234A ONLY D. 1NF-228A, 1NF-2338 and 1NF-234A Page41 of75

Catabwa Nuclear Station Question: 42 ILTJ 5 CNS RO NRC Examination (1 point)

Which ONE of the following completes the statement below?

The bistables required to permit Containment Spray Pump operation will

_ _ (1} to actuate. Once started, the NS pumps will secure on decreasing containment pressure at (2}_ _

A. 1. energize

2. 0.9 psig B. 1. energize

2. 0.35 psig C. 1. de-energize

2. 0.9 psig D. 1. de-energize

2. 0.35 psig Page42 of75

Catabwa Nuclear Station Question: 43 ILT15 CNS RO NRC Examination (1 point)

Given the following:

• A Unit 1 reactor trip has occurred due to a secondary system malfunction

• EPl1 IA/50001E-O (Reactor Trip or Safety Injection) has been performed and a transition has been made to EPl11A/50001ES-0.1 (Reactor Trip Response)

• The crew has entered EPl11A/50001FR-H.2 (Response to Steam Generator Overpressure)

• The crew is preparing to dump steam from the affected SIG Which ONE of the following completes the statements below?

FR-H.2 will only allow steam release from the affected SIG if NR level is less than a MAXIMUM of (1) _ _

If the maximum level has been exceeded, an evaluation must be performed prior to release due to the potential effects of (2) _ _

A. 1. 83%

2. steamline water hammer

8. 1. 92%

2. steamline water hammer C. 1. 83%

2. condenser tube damage D. 1. 92%

2. condenser tube damage Page43 of75

Catabwa Nuclear Station Question: 44 ILT15 CNS RO NRC Examination (1 point)

Given the following:

• Unit 2 is at 100% RTP Subsequently:

• 2A CFPT tripped Which ONE of the following completes the statement below?

The SIG level control setpoint will change for a period of (1) if Reactor power was greater than a MINIMUM of (2)_ _prior to the event.

A 1. 6 minutes

2. 56%

B. 1. 6 minutes

2. 65%

C. 1. 10 minutes

2. 56%

D. 1. 10 minutes

2. 65%

Page44 of75

Catabwa Nuclear Station Question: 45 ILT15 CNS RO NRC Examination (1 point)

Given the following:

• Unit 1 is at 100% RTP Concerning the Main Feed Pumps, which ONE of the following complete the statements below?

The Steam Generator Water Level Control system will automatically decrease feed pump speed if (1 )_ _

In order to ensure 1B CFPT assumes MORE load than 1A, "CFPT BIAS" must be adjusted (2) than 0%

A 1. CFPT speed exceeds 6226 rpm

2. greater B. 1. CFPT speed exceeds 6226 rpm

2. less C. 1. CF Header Pressure exceeds 1300 psig

2. greater D. 1. CF Header Pressure exceeds 1300 psig

2. less Page45 of75

Catabwa Nuclear Station Question: 46 ILTJ 5 CNS RO NRC Examination (1 point)

Given the following:

• A Unit 1 Safety Injection has occurred due to a fault of 1C SIG inside containment

• The crew has entered EPl11A/50001E-O (Reactor Trip or Safety Injection)

• Containment pressure 4.5 psig SIG 1A 18 1C 10 NR Level 28% 26% 9% 24%

CA Flow 225qpm 200aom 250 gpm 150 gpm Which ONE of the following completes the statements below?

Prior to being given specific SIG level control guidance by the CRS, the OATC can reduce feed flow to non-faulted SIGs when level reaches (1 )_ _

Following completion of Enclosure 1 (Foldout Page) actions, SIG

_ _(2) will be receiving the highest CA flow rate.

A. 1. 29%

2. 1A B. 1. 29%

2. 10 C. 1. 39%

2. 1A

0. 1. 39%

2. 10 Page46 of75

Catabwa Nuclear Station Question: 47 ILT15 CNS RO NRC Examination (1 point)

Which ONE of the following describes how the concern for potential feed line voiding and water hammer in the discharge piping of the CA pumps is addressed?

If a_ _(1 )_ _condition exists, an OAC alarm is generated.

To mitigate this condition, the operators will (2) _ _

A. 1. high pressure

2. run the CA pump to flush and reseat the CA pump discharge check valve B. 1. high temperature

2. run the CA pump to flush and reseat the CA pump discharge check valve C. 1. high temperature

2. operate 1CF-105 (SIG Tempering Flow Supply Throttle) to increase tempering flow D. 1. high pressure

2. operate 1CF-105 (S/G Tempering Flow Supply Throttle) to increase tempering flow Page47 of75

Catabwa Nuclear Station Question: 48 ILT15 CNS RO NRC Examination (1 point)

Given the following:

• Unit 1 is at 100% RTP

• Battery Charger 1ECC needs to be removed from service for maintenance

• Standby Charger 1ECS will be aligned to supply Distribution Center 1EDC Which ONE of the following completes the statements below?

In accordance with OP/1/A/6350/008 (125V/120VAC Vital Instrument and Control Power System), 1ECS must be powered from (1) . This power supply alignment is required in Modes (2)_ _

A. 1. 1EMXA

2. 1 -4 B. 1. 1EMXA

2. 1 -6 C. 1. 1EMXJ

2. 1-4 D. 1. 1EMXJ

2. 1 - 6 Page48 of75

Catabwa Nuclear Station Question: 49 ILTJ 5 CNS RO NRC Examination (1 point)

Given the following:

• Unit 2 is in Mode 4 performing a cooldown for refueling

• Train 2A ND is in service

• ND flow is stable at 3400 gpm Which ONE of the following describes:

1) the effect on NC cooldown rate of losing power to Vital DC Bus 2EPA; AND

2) what action the operator will take to restore the desired cooldown rate per AP/2/A/5500/029 (Loss of Vital or Aux Control Power)?

A. 1. R~elNCREASES

2. Manually adjust setpoint of 2ND-26 (ND HX 2A OUTLET CTRL)

8. 1. Rate DECREASES

2. Place PWR DISCON FOR 2Nl-173A switch to THROT and manually control 2Nl-173A C. 1. Rate INCREASES

2. Place PWR DISCON FOR 2Nl-173A switch to THROT and manually control 2Nl-173A D. 1. Rate DECREASES

2. Manually adjust setpoint of 2ND-26 (ND HX 2A OUTLET CTRL)

Page49 of75

Catabwa Nuclear Station Question: 50 ILTJ 5 CNS RO NRC Examination (1 point)

Given the following:

• Unit 1 is at 100% RTP Subsequently:

• A Blackout of 1ETA occurs

• While loading, the Accelerated Sequence halts at Load Group 2 Which ONE of the following completes the statements below?

Assuming DIG voltage and speed permissives are met, the Accelerated Sequence (1) re-initiate once the Committed Sequence completes Load Group 2.

Following completion of all Load Groups, the sequencer___(2) _ _need to be reset in order to start the 1A KF Pump.

A. 1. will

2. does B. 1. will

2. does NOT C. 1. will NOT

2. does D. 1. will NOT

2. does NOT Page SO of75

Catabwa Nuclear Station Question: 51 ILT15 CNS RO NRC Examination (1 point)

Concerning the operation of 1 EMF-46A (Component Cooling Water), which ONE of the following completes the statements below?

When a Trip 2 alarm is received, 1KC-122 (KC Surge Tank Vent)

_ _ _ _ _ _automatically close.

When the associated KC train pumps are NOT running, the EMF loss of flow alarm blocked from being received in the control room.

A. 1. will

2. is B. 1. will

2. is NOT C. 1. will NOT

2. is D. 1. will NOT

2. is NOT Page51 of75

Catabwa Nuclear Station Question: 52 ILTJ 5 CNS RO NRC Examination (1 point)

Which ONE of the following completes the statements below?

Per EP/1/A/5000/ES-1.3 (Transfer to Cold Leg Recirculation), Enclosure 2 (Aligning NS for Recirculation), in order to provide cooling to the Containment Spray (NS) Heat Exchanger, the operator will align (1) at a flowrate less than the MAXIMUM of (2)_ _

A. 1. RN

2. 5000 gpm B. 1. RN

2. 4650 gpm C. 1. KC

2. 5000 gpm D. 1. KC

2. 4650 gpm Page52 of75

Catabwa Nuclear Station Question: 53 ILT15 CNS RO NRC Examination (1 point)

Given the following:

• A LOCA has occurred on Unit 1

• The BOP is currently performing actions of EP/1/A/5000/ES-1.3 (Transfer to Cold Leg Recirculation), Enclosure 2 (Aligning NS for Recirculation)

• Containment pressure is 6 psig

• Containment sump level is 5 feet Which ONE of the following completes the statements below?

Upon opening 1NS-18A (NS Pump A Suet From Cont Sump), Containment Integrity status will change to (1) _ _

In order to return Containment Integrity status to a "Green" condition, the BOP must (2) _ _

A. 1. red

2. start 1A NS pump ONLY B. 1. orange

2. start 1A NS pump ONLY C. 1. red

2. start 1A NS pump and align 1A NS HX cooling water flow D. 1. orange

2. start 1A NS pump and align 1A NS HX cooling water flow Page53 of75

Catabwa Nuclear Station Question: 54 ILTJ 5 CNS RO NRC Examination (1 point)

Given the following:

• Unit 1 and 2 are operating at 100% RTP

• AP/O/A/5500/022 (Loss of Instrument Air) has been entered due to decreasing VI header pressure

• Attempts to restore VI pressure have been unsuccessful Subsequently:

• Both units are tripped per direction of AP/22

• VI Pressure continues to decrease Which ONE of the following completes the statements below?

Per OMP 1-7 (Emergency/Abnormal Procedure Implementation Guidelines), the actions of AP/22 will be continued (1 ). _ __

As VI pressure decreases, AP/22 will FIRST dispatch operators to manually control (2) _ _

Procedure Legend:

EP/1 (2)/A/5000/E-O (Reactor Trip or Safety Injection)

EP/1 (2)/A/5000/ES-0.1 (Reactor Trip Response)

A. 1. following actions to control key plant parameters in ES-0.1

2. CA feed flow B. 1. following actions to control key plant parameters in ES-0.1

2. NV charging flow C. 1. IMMEDIATELY following completion of Immediate Actions in E-0

2. CA feed flow D. 1. IMMEDIATELY following completion of Immediate Actions in E-0

2. NV charging flow Page54 of75

Catabwa Nuclear Station Question: 55 ILTJ 5 CNS RO NRC Examination (1 point)

Given the following:

• A LOCA has occurred on Unit 1

• Containment pressure is 3.8 psig and slowly decreasing

• SI has not been reset

• Containment isolation signals have not been reset In order to re-establish Instrument Air to Containment, which ONE of the following completes the statements below?

Safety Injection (1) required to be RESET.

Phase "B" (2) required to be RESET.

A. 1. is

2. is B. 1. is

2. is NOT C. 1. is NOT

2. is D. 1. is NOT

2. is NOT Page SS of75

Catabwa Nuclear Station Question: 56 ILT15 CNS RO NRC Examination (1 point)

Given the following:

• Unit 1 is at 50% RTP

• Control Rod Bank Select Switch is in "Auto"

• Control Bank "D" is at 195 steps withdrawn Subsequently:

• STIP-1 (Selected Turbine Impulse Pressure Input to Reactor Control System) fails to the 100% value Which ONE of the following completes the statement below?

Assuming no operator action, Control Bank "D" will_ _ _ __

A. withdraw 5 steps B. withdraw 36 steps C. remain at 195 steps D. withdraw until Reactor Power reaches 103%

Page56 of75

Catabwa Nuclear Station Question: 57 ILT15 CNS RO NRC Examination (1 point)

Given the following:

• Unit 1 tripped from 100% RTP due to a loss of Offsite Power.

• The crew has transitioned to EP/1/A/5000/ES-0.3 (Natural Circulation Cooldown With Steam Void In Vessel) due to void formation in the Vessel Head

• All PZR Heaters are OFF Which ONE of the following completes the statements below?

Under these conditions, PZR level will initially increase if_ _ _ (1 )_ _flow is increased.

Vessel UR Level must be maintained greater than 68% in order prevent

_ _(2) _ _

A. 1. letdown

2. fuel uncover B. 1. letdown

2. void entry into hot legs C. 1. charging

2. fuel uncovery D. 1. charging

2. void entry into hot legs Page57 of75

Catabwa Nuclear Station Question: 58 ILTJ 5 CNS RO NRC Examination (1 point)

Given the following:

• Unit 1 is at 100% RTP Which ONE of the following completes the statements below?

Consjder each statement separately If AFD exceeds specified limits, the OATC will be notified by an alarm on the

_ _(1) _ __

If the AFD monitor function is not available, T.S. 3.2.3 (Axial Flux Difference) requires (2) _ __

A. 1. Operator Aid Computer

2. a power reduction to <50%

B. 1 . Operator Aid Computer

2. manual logging of% delta flux C. 1. Detector Current Comparator

2. a power reduction to <50%

D. 1. Detector Current Comparator

2. manual logging of% delta flux Page SS of75

Catabwa Nuclear Station Question: 59 ILT15 CNS RO NRC Examination (1 point)

Deleted Page59 of75

Catabwa Nuclear Station Question: 60 ILT15 CNS RO NRC Examination (1 point)

Deleted Page60 of75

Catabwa Nuclear Station Question: 61 ILT15 CNS RO NRC Examination (1 point)

Given the following:

• Unit 1 is at 100% power.

• Generator Breaker 1A spuriously opens.

• The ONLY annunciator associated with the Turbine or Generator that alarms is:

• 1AD-11, F/1, GEN BKR B OVERCURRENT Which ONE of the following describes:

1) another annunciator which SHOULD have alarmed; AND

2) a manual action required for mitigating these conditions?

A. 1. 1AD-1, F/4, TURB RUNBACK INITIATED

2. Manually initiate a turbine runback to 48%

B. 1. 1AD-1, F/4, TURB RUNBACK INITIATED

2. Manually trip Generator Breaker 1B C. 1. 1AD-11, F/7, GEN BKR B TROUBLE

2. Manually initiate a turbine runback to 48%

D. 1. 1AD-11, F/7, GEN BKR B TROUBLE

2. Manually trip Generator Breaker 1B Page61 of75

Catabwa Nuclear Station Question: 62 ILT15 CNS RO NRC Examination (1 point)

Given the following:

• Unit 1 is at 100% RTP

• A SIG tube leak has developed Which ONE of the following completes the statements below?

If 1EMF-33 exceeds the (1) setpoint, the BOP will ensure the

_ _ (2) system AUTOMATICALLY re-aligns (assuming NO operator action).

A. 1. Trip 1

2. SIG Slowdown (BB)

B. 1. Trip 1

2. Condenser Offgas (ZJ)

C. 1. Trip 2

2. SIG Slowdown (BB)

D. 1. Trip 2

2. Condenser Offgas (ZJ)

Page62 of7S

Catabwa Nuclear Station Question: 63 ILT15 CNS RO NRC Examination (1 point)

Given the following:

• The Condensate System is aligned for High Pressure Cleanup Subsequently:

• The 1A CFPT experiences a complete loss of oil pressure due to an LF Pump trip Which ONE of the following completes the statements below?

The windmill protection circuit will send a direct signal to trip the operating

_ _ (1)_ __

Low CFPT oil pressure will cause the 1A CFPT___ (2) _ _to close.

A. 1. Hotwell Pumps

2. recirc valve B. 1. Hotwell Pumps

2. discharge valve C. 1. Condensate Booster Pumps

2. recirc valve D. 1. Condensate Booster Pumps

2. discharge valve Page63 of75

Catabwa Nuclear Station Question: 64 ILT15 CNS RO NRC Examination (1 point)

Given the following:

• Unit 1 is at 100% RTP

• 1A1 Cont Floor & Equip Sump Pump has automatically started due to normal operational leakage Subsequently:

• 1EMF-53A (Containment Hi Range) loses power As a result of this power failure, which ONE of the following completes the statements below?

1A1 Cont Floor & Equip Sump Pump is (1) _ _

Entry in the action statement of Tech Spec 3.3.3 (Post Accident Monitoring Instrumentation) (2) required.

A. 1. ON

2. is

8. 1. ON

2. is NOT C. 1. OFF

2. is D. 1. OFF

2. is NOT Page64 of75

Catabwa Nuclear Station Question: 65 ILT15 CNS RO NRC Examination (1 point)

Given the following:

• Unit 1 is at 4% RTP following startup o Main Turbine warming is in progress o 1A CFPT is in service o 1B CFPT is Tripped o All S/G levels are 39%

• The crew has entered AP/1/A/5500/023 (Loss of Condenser Vacuum) due to a loss of Condenser Circulating Water (RC) Pumps Subsequently:

• 1A CFPT trips on low vacuum actuation Which ONE of the following completes the statements below?

The OATC_ _(1) _ _required to trip the reactor.

1A and 1B CA pumps___(2) _ _automatically start.

A. 1. is

2. will B. 1. is

2. will NOT C. 1. is NOT

2. will D. 1. is NOT

2. will NOT Page65 of75

Catabwa Nuclear Station Question: 66 ILTJ 5 CNS RO NRC Examination (1 point)

Note the table below from SLC 16.5-3, Chemistry (excerpt).

PARAMETER STEADY STATE LIMIT TRANSIENT LIMIT Dissolved Oxygen = 0.10 ppm = 1.00 ppm Chloride = 0.15 ppm = 1.50 ppm Fluoride = 0.15 ppm = 1.50 ppm Which ONE of the following completes the statements below?

1) In accordance with SLC 16.5-3 (Chemistry), Fluoride is a_ _(1 )_ _

chemistry parameter.

2) In accordance with the applicable abnormal operating procedure, if dissolved oxygen were at a value in Action Level 3, a shutdown to Mode 3 would be required in (2) hours.

A. 1. Primary

2. 3 B. 1. Primary

2. 24 C. 1. Secondary

2. 3 D. 1. Secondary

2. 24 Page66 of75

Catabwa Nuclear Station Question: 67 ILT15 CNS RO NRC Examination (1 point)

Given the following:

• Unit 1 is at 100% RTP

• 1AD-7 C/4 "NCP Seal Water Lo Flow" alarms o The OAC indicates 1B NCP Seal Injection Flow is 0 gpm Which ONE of the following completes the statements below?

In order to determine that seal water flow to the 1B NCP has been isolated, the BOP would verify an increase in flow on (1 )_ _

Following an actual loss of seal injection flow, the BOP (2) expect to receive OAC alarm C1A0831 "NC Pump B Lower Brg Water Temp Hi-Hi".

A. 1. 1NVP5650 (Total Seal Wtr Flow)

2. will B. 1. 1NVP5650 (Total Seal Wtr Flow)

2. will NOT C. 1. 1NVP5330 (NCP 1A Seal In Flow)

2. will D. 1. 1NVP5330 (NCP 1A Seal In Flow)

2. will NOT Page67 of75

Catabwa Nuclear Station Question: 68 ILT15 CNS RO NRC Examination (1 point)

Given the following:

• During an outage, a planned maintenance activity will result in a YELLOW Defense in Depth (DID) sheet configuration.

In accordance with NSD 403 (Shutdown Risk Management), which ONE of the following complete the statements below?

Defense in Depth (DID) sheets are first initiated once___(1)_ _ is reached on a shutdown.

A RISK MANAGEMENT PLAN is_ _(2) _ _for a YELLOW risk condition.

A. 1. Mode 3

2. optional B. 1. Mode 3

2. required C. 1. Mode 4

2. optional D. 1. Mode4

2. required Page68 of75

Catabwa Nuclear Station Question: 69 ILTJ 5 CNS RO NRC Examination (1 point)

Given the following:

• Unit 1 is in Mode 3 Which ONE of the following completes the statements below?

In accordance with Tech Spec 2.1.2 (RCS Pressure Safety Limit), NC system pressure shall be less than or equal to a MAXIMUM of (1) PSIG.

Based on the conditions above, if the NC system Safety Limit is exceeded, NC system pressure must be restored to within limits in a MAXIMUM of

_ _(2) _ _

A. 1. 2485

2. 5 minutes B. 1. 2735

2. 5 minutes C. 1. 2485

2. 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> D. 1. 2735

2. 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> Page69 of75

Catabwa Nuclear Station Question: 70 ILT15 CNS RO NRC Examination (1 point)

Given the following:

• Unit 1 is in Mode 6

• A fuel handling accident involving fuel damage occurs o 1 EMF-17 (Reactor Building Refueling Bridge) is in alarm Which ONE of the following completes the statements below?

In accordance with AP/1/A/5500/025 (Damaged Spent Fuel), additional radiation monitoring will be provided by (1 )_ _

If this radiation monitor reaches Trip 2 setpoint, the Containment Evacuation Alarm (2) _ _

A. 1. 1 EMF-53A/B (Containment Train A/B)

2. will AUTOMATICALLY actuate B. 1. 1 EMF-53A/B (Containment Train A/B)

2. must be MANUALLY actuated C. 1. 1EMF-38 (Containment Particulate Monitor)

2. will AUTOMATICALLY actuate D. 1. 1EMF-38 (Containment Particulate Monitor)

2. must be MANUALLY actuated Page70 of75

Catabwa Nuclear Station Question: 71 ILT15 CNS RO NRC Examination (1 point)

Given the following:

• Unit 1 is in Mode 3.

• The NV system is being aligned for startup.

• The procedure in use requires independent verification of a single valve located in a room with a general dose rate of 130 mREM/hr.

• Estimated time to independently verify the valve's position is 10 minutes.

• There are no known hot spots in the area.

• There is no airborne activity in this room.

• The room has no surface contamination areas.

• Necessary approvals are obtained.

Which ONE of the following completes the statement below?

Per NSD 700 (Verification Techniques), independent verification of the valve above (1) be waived because (2) _ _

A. 1. may

2. the general area dose rate is GREATER than 100 mREM/hr B. 1. may NOT

2. the general area dose rate is LESS THAN 1 REM/hr C. 1. may

2. the radiation exposure for a single verification would EXCEED the allowable limit D. 1. may NOT

2. the radiation exposure for a single verification is WITHIN the allowable limit Page71 of75

Catabwa Nuclear Station Question: 72 ILT15 CNS RO NRC Examination (1 point)

Given the following:

• Prior to a Refueling Outage, an Operator's exposure for the current year is 1250 mREM

• The Operator's first assigned task during the Refueling Outage results in a dose of600 mREM Which ONE of the following completes the statements below?

Based on the conditions above, the next time the Operator logs on to the EDC computer, they will receive an (1) notification flag.

In accordance with PD-RP-ALL-001 (RADIATION WORKER RESPONSIBILITIES), the Operator must (2) prior to entering the RCA.

A. 1. ALERT

2. notify their supervisor AND obtain a dose extension B. 1. EXCLUDE

2. notify their supervisor AND obtain a dose extension C. 1. ALERT

2. notify their supervisor ONLY D. 1. EXCLUDE

2. notify their supervisor ONLY Page72 of75

Catabwa Nuclear Station Question: 73 ILT15 CNS RO NRC Examination (1 point)

Given the following:

• A large fire was reported at the Operations Training Building

1) Which of the following describes the availability of the Fire Brigade to respond to this fire?

2) Which procedure contains the guidance for requesting offsite fire department support?

A. 1. The fire brigade is not allowed to respond to fires outside the Protected Area

2. AP/O/A/5500/045 (Plant Fire)

B. 1. The fire brigade is not allowed to respond to fires outside the Protected Area

2. RP/O/B/5000/029 (Fire Brigade Response)

C. 1. The fire brigade may respond to fires outside the Protected Area as resources permit

2. AP/O/A/5500/045 (Plant Fire)

D. 1. The fire brigade may respond to fires outside the Protected Area as resources permit

2. RP/O/B/5000/029 (Fire Brigade Response)

Page 73 of75

Catabwa Nuclear Station Question: 74 ILT15 CNS RO NRC Examination (1 point)

Given the following:

• 1A SIG has experienced a Tube Rupture

• The crew has transitioned to EPl11A/50001E-3 (Steam Generator Tube Rupture)

• NC pressure is 1650 psig

• The CRS has just read a series of NOTES prior to E-3, Step 10 "Initiate NC System coo/down as follows:"

Which ONE of the following completes the statements below?

Once the cooldown is initiated:

the OATC will dump steam while maintaining a maximum steam pressure negative rate in order to prevent a (1 )_ _

if NC system subcooling is lost, the crew___(2)___secure NC pumps.

A. 1. main steam isolation

2. will B. 1. main steam isolation

2. will NOT C. 1. SIG lo-lo level actuation

2. will D. 1. SIG lo-lo level actuation

2. will NOT Page 74 of75

Catabwa Nuclear Station Question: 75 ILTJ 5 CNS RO NRC Examination (1 point)

Deleted Page75 of75

ILT 2015 - NRC RO Written Exam Answer Key Status }1

• Status

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CNS GENERIC ENCLOSURES PAGE NO.

EP/1/A/5000/G-1 46 of 105 Enclosure 15 - Page 1 of 1 Revision 9 Natural Circulation Monitoring Parameters

1. The following conditions support or indicate natural circulation flow:

o NC subcooling - GREATER THAN 0°F o S/G pressures - STABLE OR DECREASING o NC T-Hots - STABLE OR DECREASING o Core exit T/Cs - STABLE OR DECREASING o NC T-Colds - AT SATURATION TEMPERATURE FOR S/G PRESSURE (WITHIN THE LIMfTS OF THE GRAPH BELOW).

SIG PRESSURE (PSIGl 1200 1100

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200 / / \

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I 100 t [/"" / I

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200 250 300 350 400 450 500 550 600 HC T-COLD TEMPERATURE (°F)

2. lE Natural Circulation flow is not established, THEN increase dumping steam to establish Natural Circulation flow.

Q \ \t;° Unit 1 Data Book Source: CNM-1300.00153, Fig. 17-3, Dwg 435HA148 (Rev. 2)

ATB 4 POLE, 1,450,000 KVA, 1800 RPM, 2200 VOLTS 0.9 PF, 0.50 SCR, 75 PSIG HYDROGEN PRESSURE, 545 VOLTS EXCITATION 1500 .

1250 - - - i - - - - - 1 1 - - - - --*-*-*-*--*---------

1000 750 ~

0.9 PF 500

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-1000 1000 kilowatts l~ --------*-

~lO PSIG - 45PSIG - - . . - 60P61G _..,_ 7~PSIG

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Figure 43 - Generator Capability Curves Page 1