Text

Initial Exam 2010-301 Draft SRO Written Exam
	ML101520521
Person / Time
Site:	Oconee
Issue date:	05/04/2010
From:	; NRC/RGN-II
To:	; Duke Energy Carolinas
References
	50-269/10-301, 50-270/10-301, 50-287/10-301
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2010A NRC SENIOR REACTOR OPERATOR EXAM I POINT 1

Question 76 Unit 2 initial conditions:

Time1300 Time = 1300

Reactor power = 100%

Current conditions:

Time=1310

Time = 1310

RCS pressure = = 88 psig slowly decreasing

Reactor Building pressure = 35 psig slowly increasing SCMs = OaF

All SCM's 0°F

2RIA-57 = = 1.9 R/hr slowly increasing

2RIA-58 = = 1.0 R/hr slowly increasing

Average of 5 highest CETC'sCETCs = 430°F 430F decreasing RBCUs cannot be started

All RBCU's

All RBS Pumps cannot be started Based on the above conditions, which ONE of the following is the Emergency Action Level Classification?

REFERENCE PROVIDED A. Notification of Unusual Event B. Alert C. Site Area Emergency D. General Emergency

2010A NRC SENIOR REACTOR OPERATOR EXAM Question 76 TIIGI --cpw T1/G1 cpw 011 EG2.4.41, Large Break LOCA Knowledge of the emergency action level thresholds and classifications.

(2.9/4.6)

K/A MATCH ANALYSIS KIA Requires classifying event based on EAL criteria using RP/1000/001 SRO-ONLY SRO-ONL Y ANALYSIS Requires assessing plant conditions and applying those conditions to various RP/1000/O01 to determine the correct Emergency Action Level (which is enclosures in RP/1000/001 an SRO only function)

ANSWER CHOICE ANALYSIS Answer: B A. Incorrect: Plausible since this would be the correct answer based on Encl.

End. 4.2 System Malfunctions.

RP101B110001001 Att. 4.1 - 5 points for loss of RCS barrier B. CORRECT: Per RP/0/B/1000/001 using either RIA readings OR LOSCM. Another 1 I point from containment due to no RBCU or RBS. Total of 6 points which is an ALERT per matrix at bottom EncI.4.1 of Encl. 4.1 C. Incorrect: Plausible since this would be the correct answer if you added the 4 points and 5 points allowed per each column of RCS Barriers then added the 1 1 point from containment.

D. Incorrect: Plausible since this would be the correct answer if you took both 5 point blocks from RCS barrier and then added the 1 I point from containment.

Technical Reference(s): RP/0/B/1000/001 RP/0/B/1 000/001 Proposed references to be provided to applicants during examination:

RP/0/BI1000I001 Attachments 4.1 -4.8 RP/0/B/1000/001 4.8 Learning Objective: EAP-SEP R12 Question Source: NEW Question History: Last NRC Exam N/A Question Cognitive Level: Comprehension and Analysis

2010A NRC SENIOR REACTOR OPERATOR EXAM I POINT 1

Question 77 Unit 11 plant conditions:

Reactor power = 100%

CC CRD Return Flow = = 125 gpm slowly decreasing

CC Return Flow = = 563 gpm decreasing

Letdown Temperature = 138°F stable

The following alarms have actuated:

o 1SA-9/B-1 ISA-9/B-1 (CC CRD Return Flow Low).

ISA-2/C-1 (HP Letdown Temperature High) o 1SA-2/C-1 o 11SA-9/C-1 SA-9/C-1 (CC Component Cooling Return Flow Low)

Based on the above conditions:

ARC(s)

(1) Which ONE of the following describes a required action from the associated ARG(s) to mitigate this event?

AND (2) If the ARG directed actions are NOT successful, which Abnormal Procedure is required to be entered fl!t?

first?

A. (1) Decrease letdown flow using 1 1HP-7 HP-7 (LETDOWN CONTROL)

(2) AP/32 (Loss of Letdown)

B. (1) Decrease letdown flow using 1 1 HP-7 (LETDOWN CONTROL)

(2) AP/20 (Loss of Component Cooling)

C. (1) Verify CC Surge Tank level> 12 inches and start the standby CC pump (2) AP/32 (Loss of Letdown)

D. (1) Verify CC Surge Tank level> 12 inches and start the standby CC pump (2) AP/20 (Loss of Component Cooling)

2010A NRC SENIOR REACTOR OPERATOR EXAM Question 77 T1/G1 TI/GI - cpw 026 2.1.23, Loss of Component Cooling Water Ability to perform specific system and integrated plant procedures during all modes of plant operation.

(4.3/4.4)

KIA MATCH ANALYSIS Requires the ability to perform ARG procedures as well as AP's APs that are applicable as a result of loss of Component Cooling water SRO-ONLY SRO-ONL Y ANALYSIS Requires assessment of facility conditions and selection of appropriate procedures during an abnormal situation when multiple entry conditions are satisfied. (43.5)

ANSWER CHOICE ANALYSIS Answer: D 1SA-2/C-1 setpoint = 1SA-918-1 (CC CRD Return Flow Low)

130°F and is actuated. 1SA-9/B-1 setpoint = = 138 gpm and is actuated. 1 SA-9/C1 setpoint

ISA-9/C1 = 575 gpm and is actuated.

Loss of letdown has occurred as a result of decreased CC flow. SRO must prioritize AP entry.

A. Incorrect: Plausible in that the action directed is correct for 11 SA-2/C-1 (High Letdown Temp). Entry conditions are met for both AP/20 and AP/32 since letdown auto isolates at 135 degrees however; AP/20 is first to be entered by statalarm procedure (AP/20 is the higher priority procedure and must be prioritized first).

B. Incorrect: Plausible in that the action directed is correct for 1SA-2/C-1 1 SA-2/C-1 (High Letdown Temp). Abnormal procedure selection is correct.

1 SA-9/B1. Second C. Incorrect: First part is correct. Action is correct as it is directed by 1 part is incorrect. Entry conditions are met for both AP/20 and AP/32 however; AP/20 is first to be entered by statalarm procedure (AP/20 is the higher priority procedure and must be prioritized first).

D. Correct: Action to verify CC surge tank level> 12 inches and start standby CC pump are directed in 1 ISA-91B-1.

SA-9/B-1. API2O AP/20 is first to be entered by statalarm procedure.

Technical Reference(s): OP/3/A161 0P131A16l 03/002 (3SA-2/C-1),

(35A-21C-1), OP/3/A161 011113/009 03/009 (3SA-9/B-1 &

3SA-9/C-1),

3SA-9/C-l), AP/20, API2O, AP132 AP/32 Proposed references to be provided to applicants during examination: None Learning Objective: PNS-CC Obj R17 & R20 Question Source: Bank Question History: Last NRC Exam 2009 Question 79 (Re-ordered answers)

Question Cognitive Level: Comprehension or Analysis

2010A NRC SENIOR REACTOR OPERATOR EXAM I POINT 1

Question 78 1 initial conditions:

Unit 1

Date Date=12/01

= 12/01

Time = 0800

Reactor Power = 100%

All Pressurizer heater breakers trip open and cannot be reclosed Current conditions:

Date = 12/04

Time = 2200 Based on the above conditions, which ONE of the following describes the MAXIMUM RCS temperature (degrees F) that is in compliance with the requirements of Tech Specs AND the bases for the Pzr heater power supply requirements in TS 3.4.9 (Pressurizer)?

REFERENCE PROVIDED A. 320 / ensure ability to perform a subcooled cooldown while on natural circulation during an extended loss of power B. 320 / ensure ability to control pressure and remain subcooled during an extended loss of power C. 375 / ensure ability to perform a subcooled cooldown while on natural circulation during an extended loss of power D. 375 / ensure ability to control pressure and remain subcooled during an extended loss of power

2010A NRC SENIOR REACTOR OPERATOR EXAM Question 78 TIIGI --cpw T1/G1 cpw 027AA2.09, 027 AA2.09, Pressurizer Pressure Control System (PZR PCS) Malfunction Ability to determine and interpret the following as they apply to the Pressurizer Pressure Control Malfunctions: Reactor power (3.5/3.6)

ANALYSIS*

KIA MATCH ANALYSIS*

Requires knowledge of the impact of a malfunction of the pressurizer heaters on reactor power. Since there is no direct correlation between a failure of pressurizer heaters on Reactor Power, the mandated TS requirement to shutdown based on the failure and the ability to determine the required reactor power is used here.

SRO-ONLY SRO-ONL Y ANALYSIS Requires knowledge from TS 3.4.9 Bases regarding the reason Pressurizer heaters are required to be able to be powered from emergency power supply ANSWER CHOICE ANALYSIS Answer: D A. Incorrect: First part is plausible from two different error paths. Either using the shutdown requirement based on pressurizer level not meeting the TS or misapplying Condition D and not adding the additional 6 hrs once in MODE 3 to get below 325 degrees would lead to this choice. Second part is plausible since maintaining SCM during a natural circulation cooldown is a significant concern and having adequate pressurizer heaters is an integral part of being able to do that. Additionally plausible since it is generally always preferred to get the unit cooled down and to LPI.

B. Incorrect: First part is plausible from two different error paths. Either using the shutdown requirement based on pressurizer level not meeting the TS or misapplying Condition D and not adding the additional 6 hrs once in MODE 3 to get below 325 degrees would lead to this choice. Second part is correct.

C. Incorrect: First part is plausible from two different error paths. Either using the shutdown requirement based on pressurizer level not meeting the TS or misapplying Condition D D and not adding the additional 6 hrs once in MODE 3 to get below 325 degrees would lead to this choice choice.... Second part is plausible since maintaining SCM during a natural circulation cooldown is a significant concern and having adequate pressurizer heaters is an integral part of being able to do that. Additionally plausible since it is generally always preferred to get the unit cooled down and to LPI.

D. CORRECT: TS 3.4.9 Condition C allows 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months to restore pzr heater capacity. Then Condition D hou~s to MODE 3. Since the elapsed time 0 allows 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months in the question is 86 hours9.953704e-4 days 0.0239 hours 1.421958e-4 weeks 3.2723e-5 months , being in MODE 3 but above 325 degrees (since an additional 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months is allowed to get below 325 degrees) meets the requirement of the TS. TS 3.4.9 Bases says the requirement for emergency power supplies is based on NUREG-0737. The intent is to allow maintaining the reactor coolant in a subcooled condition with natural circulation at hot, high pressure conditions for an undefined, but extended, time period after a loss of offsite power.

Technical Reference(s): ADM-TSS, Tech Spec 3.4.9 and its bases Proposed references to be provided to applicants during examination: TS 3.4.9 -

Pressurizer Learning Objective: ADM-TSS R1, RI, R5 Question Source: NEW Question Cognitive Level: Comprehension and Analysis

2010A NRC SENIOR REACTOR OPERATOR EXAM I POINT 1

Question 79 Unit 1I initial conditions:

Reactor power = 75% stable

The following alarms actuate:

ISA-8/A3 (FWPT A TRIP) o 1SA-8/A3 o 1 ISA-8/A6 SA-8/A6 (FWPT B B TRIP)

ISA-i/Al (RP CHANNEL o 1SA-1/A1 CHANNELATRIP)

A TRIP) 1SA-i/Bl (RPCHANNELBTRIP) o 1SA-1/B1 (RP CHANNEL B TRIP)

ISA-I/Cl (RP o 1SA-1/C1 (RPCHANNELCTRIP)

CHANNEL C TRIP) 1SA-l/Dl (RPCHANNELDTRIP) o 1SA-1/D1 (RP CHANNEL D TRIP)

Current conditions:

Reactor power = = 7% slowly decreasing

All SCM's SCMs = 0°F stable

= OaF Based on the above conditions, which ONE of the following describes the EOP tab that will be directed first AND subsequent conditions that would require a transfer to a different EOP tab?

A. UNPP I/ Reactor Vessel head level = = 0 inches B. UNPP I/ Station Blackout C. LOSCM I/ Reactor Vessel head level =

= 0 inches D. LOSCM I/ Station Blackout

2010A NRC SENIOR REACTOR OPERATOR EXAM Question 79 TIIGI --cpw T1/G1 cpw 029EA2.02, ATWS Ability to determine or interpret the following as they apply to an ATWS:

Reactor trip alarm (4.2/4.4) 43.5 K/A MATCH ANALYSIS KIA Requires interpreting Rx trip alarms (RPS channel trips) and indications (Rx power) to determine if an ATWS is in progress.

SRO-ONLY SRO-ONL Y ANALYSIS Requires assessment of plant conditions and prescribing a procedure section with which to proceed.

ANSWER CHOICE ANALYSIS Answer: B A. Incorrect: First part is correct. Second part is plausible since head level of 0 inches is an indication of inadequate core cooling conditions. The ICC tab is a very high priority tab however it is not a higher priority than the UNPP tab therefore there is no transfer to ICC from UNPP.

B. CORRECT: Since an ATWS has occurred, Rule 1 I will be entered and Rule 1I will direct the POPD to go to the UNPP tab. Even if Rule 1I is missed the PA page of SA will direct the SRO to UNPP. A blackout and therefore transfer to the Blackout tab is the only transfer out of UNPP allowed.

ICs provide the operator with a loss of C. Incorrect: First part is plausible since the IC's subcooling margin condition. LOSCM tab is a high priority tab however the UNPP tab takes precedence therefore UNPP would be the correct tab.

D. Incorrect: Plausible since the entry conditions for the LOSCM tab are met however UNPP tab is a higher priority both from Rule 1 1 and the PA page of SA.

Technical Reference(s): EOP-SA EOP-UNPP, Rule 1 I Proposed references to be provided to applicants during examination: NONE Learning Objective: EAP-UNPP R1, RI, R10, RIO, & R12 Question Source: New Question History: Last NRC Exam N/A NIA Question Cognitive Level: Comprehension and Analysis

2010A NRC SENIOR REACTOR OPERATOR EXAM I POINT 1

Question 80 1 plant conditions:

Unit 1

Reactor power = = 100%

1I DCA and 1I DCB supply breakers to 1 I KI inverter tripped open

1 Kl inverter static transfer switch fails to transfer power 1 KI

AP/23 (Loss Of ICS Power) in progress Based on the above conditions, which ONE of the following describes conditions where AP/23 would direct tripping all operating Main Feedwater pumps AND the Tech Spec Loss Of Main Feedwater Pumps" bases for the "Loss Pumps RPS anticipatory trip?

Both MFDW pumps are required to be tripped if AND the Tech Spec bases for Loss Of Main Feedwater Pumps" the "Loss Pumps RPS anticipatory trip is to reduce the possibility of A. Steam Generator pressure is unstable I challenging the PORV B. Steam Generator pressure is unstable I operation at power while on Emergency Feedwater C. the reactor trips I challenging the PORV D. the reactor trips I operation at power while on Emergency Feedwater

2010A NRC SENIOR REACTOR OPERATOR EXAM Question 80 TIIGI --cpw T1/G1 cpw 058G2.4.1 1, Loss of DC Power 058G2.4.11, Knowledge of abnormal condition procedures.

(4.0/4.2)

KIA MATCH ANALYSIS Requires knowledge of mitigation strategy in AP/23 when a loss of DC supply to KI inverter occurs.

SRO-ONLY SRO-ONL Y ANALYSIS Requires detailed knowledge of decision path regarding when to trip MFDWP's MFDWPs and this action would require transition to the event specific Rule 3 due to loss of main feedwater. Also requires knowledge from the bases of Tech Specs regarding the purpose of the Loss of Main Feedwater Pump trip. Although both answers could be correct from a systems knowledge perspective, it is the determination of the Bases for the trip that makes this SRO level.

ANSWER CHOICE ANALYSIS Answer: C A. Incorrect: First part is plausible since this condition is addressed in the applicable section of AP/23 (Loss of ICS Power) only corrective actions requires adjusting MFDWPs. Second part is correct Turbine Master rather than tripping MFDWP's.

B. Incorrect: First part is plausible since this condition is addressed in the applicable section of AP/23 (Loss of ICS Power) only corrective actions requires adjusting MFDWPs. Second part is plausible since EFDW Turbine Master rather than tripping MFDWP's.

cannot provide sufficient flow to support power operations. Additional plausibility MFDWPs trip frdm the fact that there is a required manual reactor trip if both MFDWP's comes from CRs are> 50% Gp1.

and CR's Gpl. The consequences of being at power and the Rx not tripping when Main FDWP's FDWPs trip would be EFDW providing water to SG's SGs at power therefore it would be plausible to deduce that the reason the Rx is tripped when both MFDWPs trip is to prevent operation when EFDW was providing flow to SG's.

MFDWP's SGs.

C. CORRECT: AP/23 AP123 section 484B for Loss of ICS Auto Power directs via an IAA IAAT T

MFWPs. The bases for TS 3.3.1 (Reactor that if Rx trips then trip both MFWP's.

Protective System Instrumentation) describes the purpose of the trip as being to minimize challenges to the PORV" "to PORV D. Incorrect: First part is correct. Second part is plausible since EFDW cannot provide sufficient flow to support power operations. Additional plausibility comes from the MFDWPs trip and CR's fact that there is a required manual reactor trip if both MFDWP's CRs are>

Gpl. The consequences of being at power and the Rx not tripping when Main 50% Gp1.

FDWP's FDWPs trip would be EFDW providing water to SG's SGs at power therefore it would be MFDWPs trip is to plausible to deduce that the reason the Rx is tripped when both MFDWP's prevent operation when EFDW was providing flow to SG's. SGs.

Technical Reference(s): AP/23 Loss of ICS Power, Tech Spec 3.3.1 Proposed references to be provided to applicants during examination: NONE Learning Objective: EAP-APG RB, R8, ADM-TSS R5 Question Source: NEW Question History: Last NRC Exam N/A Question Cognitive Level: Comprehension and Analysis

2010A NRC SENIOR REACTOR OPERATOR EXAM 1 POINT 1

Question 81 I initial conditions:

Unit 1

Reactor trip from 100% power

Both Main Feedwater pumps trip

EFDW pumps will not start Current conditions:

Rule 3 in progress

LOHT tab initiated SCMs > O°F

ALL SCM's> 0°F Based on the above conditions, which ONE of the following changes in plant conditions would require an immediate transfer out of the LOHT tab?

A. TDEFWP becomes available B. Condensate Booster Pump feed established C. Indications of a Steam Generator Tube Rupture in the 1A SG D. Core SCM = O°F 0°F due to RCS heatup AND HPI Forced Cooling established

2010A NRC SENIOR REACTOR OPERATOR EXAM Question 81 TI/GI --cpw T1/G1 cpw BEO4EA2.1, Inadequate Heat Transfer-Loss of Secondary Heat Sink BE04EA2.1, Ability to determine or interpret the following as they apply to the (Inadequate Heat Transfer):

Facility conditions and selection of appropriate procedures during abnormal and emergency operations (3.0/4.2)

K/A MATCH ANALYSIS KIA Must determine plant conditions and select correct procedure path required based on those conditions.

SRO-ONLY ANALYSIS Requires assessing plant conditions and prescribing a section of the procedure with which to proceed ANSWER CHOICE ANALYSIS Answer: 0 D A. Incorrect: Plausible since the availability of the TDEFWP can eliminate the loss of SGs with the TDEFWP with no heat transfer condition and guidance for feeding the SG's other major issues can be found in the Subsequent Actions tab so it would be plausible to assume a transfer to SA would be appropriate however guidance for re- re SGs is in the LOHT tab.

establishing feed to SG's B. Incorrect: Plausible since once CBP feed is established there is no longer a loss of heat transfer and it would be plausible to deduce a transfer back to the SA tab would be appropriate however the guidance needed for CBP feed is in Rule 2 and the LOHT tab has you stay there during CBP feed until another source of FDW is available C. Incorrect: Plausible since a transfer to the SGTR tab would be correct if it did not occur in conjunction with the LOHT. Normally, if a SGTR occurs and the EOP is entered based on those indications the SGTR tab would provide the mitigation strategy.

0. CORRECT: Transfer to LOSCM does not occur here if the reason Core SCM =

D. = 0 is due to RCS heatup as a result of the LOHT. When this occurs, LOHT directs performing Rule 4. As long as HPI operation is normal when Rule 4 is complete, LOHT directs a transfer to the HPI CD tab.

Technical Reference(s): EOP LOHT tab page 1, 1, EAP-LOHT ATTACH. I1 & & 55 Proposed references to be provided to applicants during examination: NONE Learning Objective: EAP-LOHT R22 Question Source: NEW Question History: Last NRC Exam N/A NIA Question Cognitive Level: COMPREHENSION AND ANALYSIS

2010A NRC SENIOR REACTOR OPERATOR EXAM I POINT 1

Question 82 Unit 11 initial conditions:

Startup in progress

Reactor ReactorinMODE3 in MODE 3

Source Range Nl's Nis 2 & 4 OOS

Source Range NI's Nis 11 & 3 = 834 cps increasing

Wide Range NI's Nis 1I thru 4 = 5E-3% increasing Current conditions:

Source Range NI-1 NI-I = 0 cps ISA-05/A8 (NI-1

1SA-05/A8 (Ni-i TEST/FAIL) actuates Based on the above conditions, which ONE of the following describes a reason for the NI-I indications AND the required status of Steam Generator level control in NI-1 accordance with Tech Spec 3.7.5 (Emergency Feedwater) bases?

A. Loss of +15V+I5V Power supply / ONLY manual level control required in MODE 3 & 4 B. Loss of +15V Power supply / BOTH automatic AND manual level control required in MODE3&4 MODE 3 &4 C. Source range becomes saturated / ONLY manual level control required in MODE 3

&4 D. Source range becomes saturated / BOTH automatic AND manual level control required in MODE 3 & 4

2010A NRC SENIOR REACTOR OPERATOR EXAM Question 82 TIIG2 -cpw T1/G2 032G2.4.45, Loss of Source Range NI Ability to prioritize and interpret the significance of each annunciator or alarm.

(4.1/4.3)

K/A MATCH ANALYSIS KIA OK to ask about determining problems with NI even if no annunciator indicates the problem.. Follow up with Gerry if needed.

Requires ability to interpret the significance of Source Range annunciators.

SRO-ONL SRO-ONLY Y ANALYSIS Requires knowledge of bases information from TS 3.7.5 (EFW)

ANSWER CHOICE ANALYSIS Answer: A ISA-51A8 if any power supply is low, NI-1 A. CORRECT: Per 1SA-5/A8 NI-I fails low and the alarm is actuated. Automatic level control is required to be operable by TS 3.7.5 anytime the reactor is in MODE 2 or above however. Only manual level control is required in MODE 3 and 4.

B. Incorrect: First part is correct. Second part is plausible since both automatic and manual level control are required however only manual control is required in MODE 3 and 4.

NIs do become saturated C. Incorrect: First part is plausible since Source Range Nl's during a Rx startup. Since some Nuclear Instrumentation resets to 0 cps when saturated to protect the instrument (as with previous versions of our SR Nl's)

N ls) it is reasonable to believe that they would indicate 0 cps when saturated. However with our current Nl's NIs the Dixon gages will just be pegged high. Second part is correct.

NIs do become saturated D. Incorrect: First part is plausible since Source Range Nl's during a Rx startup. Since some Nuclear Instrumentation resets to 0 cps when saturated to protect the instrument (as with previous versions of our SR Nl's)

N ls) it is reasonable to believe that they would indicate 0 cps when saturated. However with NIs the Dixon gages will just be pegged high. Second part is plausible our current Nl's since both automatic and manual level control is required however only manual control is required in MODE 3 and 4.

ISA-51A8, TS 3.7.5 bases Technical Reference(s): IC-NI, 1SA-5/A8, Proposed references to be provided to applicants during examination: NONE Learning Objective: IC-NI R9, 10 ADM-ITS R3 Question Source: NEW Question History: Last NRC Exam N/A NIA Question Cognitive Level: Comprehension and Analysis

SENIOR REACTOR OPERATOR EXAM 2010A NRC SENiOR I1 POINT Question 83 Unit 1I plant conditions:

RCS temperature == 544°F stable

Safety Rod groups withdrawal in progress

ALL Wide Range NI's Nis fail LOW Which ONE of the following describes the ...

(1) ONE hour action required by (l)ONE byTSTS 3.3.10 (Wide Range Neutron Flux)

AND (2) power levels at which the Tech Spec bases credits the WR Nl'sNis to alert operators of reactivity transients in anticipation of RPS actuation?

A. reduce power to <4E-3% RTP I/ low power B. reduce power to <4E-3% RTP I/ high power C. Open CRD breakers I/ low power D. Open CRD breakers I/ high power

2010A NRC SENIOR REACTOR OPERATOR EXAM Question 83 TIIG2 -cpw T1/G2 033AG2.1 .23, Loss of Intermediate Range NI 033AG2.1.23, Ability to perform specific system and integrated plant procedures during all modes of plant operation.

(4.3/4.4) 43.5 KIA K/A MATCH ANALYSIS Requires performing actions based on administrative procedures (TS 3.3.10) as well as understanding what function TS credits the WR Nl's NIs with doing.

SRO-ONL SRO-ONLY Y ANALYSIS Requires knowledge of bases information for TS 3.3.10 Wide Range Neutron Flux ANSWER CHOICE ANALYSIS Answer: C A. Incorrect: First part is plausible since the power reduction would be correct if only 11 required WR NI had failed (although 2 hours2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months would be allowed to perform the action). Second part is correct B. Incorrect: First part is plausible since the power reduction would be correct if only 1 I required WR NI had failed (although 2 hours2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months would be allowed to perform the action). Second part is plausible since at higher powers you are operating closer to RPS trip setpoints so it would be reasonable to deduce that additional measures to monitor for Reactivity transients would be required.

C. CORRECT: Per TS 3.3.10 (Wide Range Neutron Flux) CRD trip breakers must be opened within 1 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months . The bases of TS 3.3.10 describes the credited function as being alerting the operator to reactivity transients at low power to anticipate RPS actuation D. Incorrect: First part is correct. Second part is plausible since at higher powers you are operating closer to RPS trip setpoints so it would be reasonable to deduce that additional measures to monitor for Reactivity transients would be required.

Technical Reference(s): TS 3.3.10 Proposed references to be provided to applicants during examination: NONE Learning Objective: ADM-TSS R4, R5 Question Source: NEW Question History: Last NRC Exam NIA N/A Question Cognitive Level: Comprehension and Analysis

2010A NRC SENIOR REACTOR OPERATOR EXAM I POINT 1

Question 84 Unit 1I initial conditions:

Reactor power = 100% stable Current conditions:

Reactor power = = 28% decreasing

Both Generator Output Breakers trip open following...

Which ONE of the following ...

(1) procedure entry conditions are met based on current conditions?

AND (2) states what the Atmospheric Dump Valves are credited for doing during a SGTR in accordance with Tech Spec bases?

A. AP/1 (Unit Runback) / Prevent exceeding Compressive stress limits on the isolated SG B. AP/1 (Unit Runback) / Cooldown the RCS using BOTH SG's SGs to allow isolating the ruptured SG within 40 minutes C. EOP / Prevent exceeding Compressive stress limits on the isolated SG D. EOP / Cooldown the RCS using BOTH SG's SGs to allow isolating the ruptured SG within 40 minutes

2010A NRC SENIOR 2010A NRC REACTOR OPERATOR SENIOR REACTOR OPERATOR EXAM EXAM Question Question 84 84 T1/G2 - cpw TIIG2 - cpw BAO1AA2.1, Plant Runback BA01AA2.1, Plant Runback Ability toto determine determine or interpret the or interpret the following following as they apply as they to the (Plant apply to (Plant Runback):

Runback):

during abnormal and appropriate procedures during Facility conditions and selection of appropriate emergency operations (3.0/3.7)

KIA MATCH ANALYSIS K/A Requires ability to determine if aa plant will occur and selecting the appropriate appropriate procedure based on that determination SRO-ONLY ANALYSIS SRO-ONLY Requires knowledge of the TS bases regarding how the ADVs ADV's are credited to help mitigate aa SGTR.

ANSWER CHOICE ANALYSIS Answer: B B A. Incorrect: First part is correct. Second part is plausible since compressive stresses during a SGTR scenario are valid concerns. Additional plausibility comes from the fact that tensile stresses in a SG are mitigated by steaming the SG and the ADVs ADV's are what are credited for providing a method of steaming the SGs SG's since the TBVs TBV's are not safety related therefore the misconception of steaming is required mitigate to compressive stresses would lead to this choice.

B. CORRECT: For power levels below 40%, the unit will survive a load rejection which means that the EOP entry conditions will not be met and therefore AP/1 (Unit Runback) will be the controlling procedure to stabilize the plant. The bases of TS 3.7.4 (ADV Flow Paths) explains that the ADV's ADVs are credited in the SGTR scenario to allow the operator to manually depressurize both SG's SGs to allow isolation of the ruptured SG within 40 minutes of identifying the rupture.

levels > 40% a Rx trip is possible C. Incorrect: First part is plausible since for power levels>

during a load rejection. For powers> 70% a Rx trip is considered imminent. Second part is plausible since compressive stresses during a SGTR scenario are valid concerns. Additional plausibility comes from the fact that tensile stresses in a SG SC are mitigated by steaming the SG ADVs are what are credited for providing a SC and the ADV's method of steaming the SG's TBVs are not safety related therefore the SCs since the TBV's misconception of steaming is required to mitigate compressive stresses would lead to this choice.

levels > 40% a Rx trip is possible D. Incorrect: First part is plausible since for power levels>

during a load rejection. For powers> 70% a Rx trip is considered imminent. Second part is correct.

(ADVs)

Technical Reference(s): AP/1, TS 3.7.4 (ADV's)

Proposed references to be provided to applicants during examination: NONE Learning Objective: STG-ICS R9, ADM-TSS R5 Question Source: NEW Question History: Last NRC Exam N/A Question Cognitive Level: Comprehension and Analysis

2010A NRC SENIOR REACTOR OPERATOR EXAM I POINT 1

Question 85 Unit 2 initial conditions:

Reactor power = = 100% stable

Main Turbine trips

Group 4 rod 6 remains 100% withdrawn Based on the above conditions, which ONE of the following describes actions required by the EOP and the Tech Spec design bases for the Turbine Stop Valves?

A. Open 2HP-24 and 11 HP-25 ONLY /I Prevent overcooling during a MSLB B. Open 2HP-24 and 1 IHP-25 HP-25 ONLY / Isolate SG's SGs during a SGTR C. Initiate Emergency Boration /I Prevent overcooling during a MSLB D. Initiate Emergency Boration I/ Isolate SG's SGs during a SGTR

2010A NRC SENIOR REACTOR OPERATOR EXAM Question 85 TIIG2 - cpw T1/G2 -

BAO4AA2.2, Turbine Trip BA04AA2.2, interpret the following as they apply to the (Turbine Trip):

Ability to determine or .interpret Adherence to appropriate procedures and operation within the limitations in the facility'sfacilitys license and amendments (3.7/3.7)

KIA MATCH ANALYSIS Requires ability to adhere to steps in EOP-SA as a result of stuck rod during a Turbine Trip from power.

SRO-ONLY SRO-ONL Y ANALYSIS Requires knowledge from TS bases for Turbine Stop Valves.

ANSWER CHOICE ANALYSIS Answer: A A. CORRECT: The turbine trip would require entry into EOP SA tab. The SA tab checks to ensure all control rods are inserted and if not directs opening 1 IHP HP-24 and 1 I HP-25.The bases of TS 3.7.2 (Turbine Stop Valves) describes the purpose of the TSV's TSVs as to stop steam flow to the turbine to prevent overcooling.

B. Incorrect: First part is correct. Second part is plausible since separating the SG's SGs is part of what the TSVs TSV's are credited for doing however it is in the context of limiting SG blowdown on a MSLB to prevent overcooling.

C. Incorrect: First part is plausible since initiating Emergency Boration is an action directed by the EOP but it is directed during an ATWS. With only 1 I control rod stuck out and no indication of being at power, Emergency Boration would not be required.

Second part is correct.

D. Incorrect: First part is plausible since initiating Emergency Boration is an action directed by the EOP but it is directed during an ATWS. With only 1 I control rod stuck out and no indication of being at power, Emergency Boration would not be required.

Second part is plausible since separating the SG'sSGs is part of what the TSV's TSVs are credited for doing however it is in the context of limiting SG blowdown on a MSLB to prevent overcooling.

Technical Reference(s): ADM-TSS, TS 3.7.2 (Turbine Stop Valves), EAP-SA Proposed references to be provided to applicants during examination: NONE Learning Objective: ADM-TSS R5 and EAP-SA R1 RI Question Source: NEW Question History: Last NRC Exam NIA N/A Question Cognitive Level: Analysis and Comprehension

2010A NRC SENIOR REACTOR OPERATOR EXAM I POINT 1

Question 86 Unit 11 initial conditions:

Reactor in MODE 3

RCS leakage = = 95 gpm

1 1A2 A2 RCP Motor Upper Guide Bearing temperature = = 195°F slowly increasing

1 I B2 RCP Motor Stator Temperature = = 235°F slowly increasing Based on the above conditions, which ONE of the following describes the actions required by AP/16 (Abnormal Reactor Coolant Pump Operation) AND which EOP tab nnd 2d would provide guidance if the 2 RCP was secured and a Natural Circulation cooldown was required?

Trip the ...

A2 RCP I/ Forced Cooldown A. 11A2 B. 1A2 RCP I/ LOCA Cooldown C. 1 B2 RCP /I Forced Cooldown 1B2 1 B2 RCP /I LOCA Cooldown D. 1B2

2010A NRCNRC SENIOR REACTOR REACTOR OPERATOR OPERATOR EXAM EXAM Question 86 T2IGI - cpw T2/G1 -

003A2.02, Reactor 003A2.02, Reactor Coolant Coolant Pump Pump predict the impacts Ability to (a) predict impacts of the following malfunctions malfunctions or operations on RCPS; and (b) based the RCPS; based on those predictions, predictions, use use procedures procedures to correct, control, or mitigate the consequences of those malfunctions or operations:

Conditions which exist for an abnormal shutdown of an RCP in comparison to a normal shutdown of an RCP (3.7/3.9)

K/A MATCH ANALYSIS KIA Requires predicting the impact of the malfunctions on RCP operation and using AP/16 AP/1 6 (Abnormal RCP Ops) to determine actions required to shutdown the RCP under the abnormal conditions SRO-ONLY SRO-ONL Y ANALYSIS Requires assessing plant conditions (the need to secure RCP bases on ITC) and then prescribing a section of a procedure with which to proceed.

ANSWER: A A. CORRECT: The Immediate Trip Criteria (ITC) limit for the upper guide bearing temp is 190 degrees therefore the ITC has been exceeded. Per AP/16 APII6 if Rx nd power is <70% you trip the affected RCP. If the 2 2 RCP is lost and therefore no RCPs are operating you will meet the entry conditions for the EOP. At the end RCP's of Subsequent Actions the procedure will determine if a Natural Circulation cooldown is required and if so direct you to the Forced Cooldown Tab to continue with the coolcooldown.

down.

B. Incorrect: First part is correct. Second part is plausible due to the large RCS leak being present however the criteria for using the LOCA Cooldown tab is to have a a leak that is larger than normal RCS makeup which is approximately 160 gpm. Since this leak is not that large the LOCA CD tab is not utilized.

C. Incorrect: The temp limit for motor stator is 295 degrees. 235 degrees is plausible since there are several ITC trip setpoints with temps less than 235 degrees (examples are Radial Bearing temps (225) and thrust bearing temps (190). If you had the misconception that the ITC for the 1 182 B2 were met then this would be correct.

D. Incorrect: The temp limit for motor stator is 295 degrees. 235 degrees is plausible since there are several ITC trip setpoints with temps less than 235 degrees (examples are Radial Bearing temps (225) and thrust bearing temps (190). Second part is plausible due to the large RCS leak being present however the criteria for using the LOCA Cooldown tab is to have aa leak that is larger than normal RCS makeup makeup which is approximately 160 160 gpm. Since this leak is not that large the LOCA CD tab is not utilized.

Technical Reference(s): APII6 AP/16 (Abnormal RCP Operation) AP129 AP/29 Rapid Unit Unit Shutdown Proposed references to be provided to applicants during during examination: NONE NONE Learning Objective:

Objective: EAP EAP APG R8,RB, R9 Question Source: NEW NEW Question History: Last NRC Question NRC Exam N/A N/A Question Question Cognitive Cognitive Level:

Level: Comprehension Comprehension and and Analysis Analysis

NRC SENIOR 2010A NRC SENIOR REACTOR REACTOR OPERATOR OPERATOR EXAMEXAM 1I POINT POINT Question 87 Unit 3 plant conditions:

Reactor power = = 100%

3A RBCU tagged out

3LPSW-19 (3B RBCU INLET) fails closed Based on the above conditions, which ONE of the following describes the capabilities of the Reactor Building Spray and Cooling systems to perform their credited safety function during a LOCA and the actions required to comply with Tech Spec 3.6.5 (Reactor Building Spray and Cooling Systems)?

Following a LOCA, Reactor Building Spray and Cooling systems _ _ _ _ perform their credited safety functions AND _ _ __

A. can / Restore Containment to OPERABLE status within 11 hour1.273148e-4 days 0.00306 hours 1.818783e-5 weeks 4.1855e-6 months B. can / Immediately enter LCO 3.0.3 C. cannot / Restore Containment to OPERABLE status within 11 hour1.273148e-4 days 0.00306 hours 1.818783e-5 weeks 4.1855e-6 months D. cannot / Immediately enter LCO 3.0.3

2010A NRC SENIOR REACTOR OPERATOR EXAM Question 87 T2/G1 T2IGI -cpw 022A2.04, Containment Cooling Ability to (a) predict the impacts of the following malfunctions or operations on the CCS; and (b) based on those predictions, use procedures to correct, control, or mitigate the consequences of those malfunctions or operations:

Loss of service water (2.9/3.2)

K/A MATCH ANALYSIS KIA Requires predicting the impact that losing LPSW to two of the RBCU'sRBCUs will have on Coolings ability to perform its safety function and then requires choosing Containment Cooling's the correct procedures to mitigate the consequences of the failure.

SRO-ONLY SRO-ONL Y ANALYSIS Requires knowledge from the bases of TS 3.6.5 to determine if sufficient RB Cooling systems are available to perform their credited safety function. Also requires knowledge of the requirements of LCO 3.0.3 since TS 3.6.5 Condition H H requires immediate entry into LCO 3.0.3.

ANSWER CHOICE ANALYSIS Answer: 0 D A. Incorrect: First part is plausible since there are still two RBS trains and one RBCU RBCUs are redundant systems then train operable. If you assumed that RBS and RBCU's you would deduce that safety function is still available since both RBS trains remain operable. Second part is plausible since the malfunction would result in a RBCU Cooler Rupture alarm since the LPSW-21 (outlet valve) is still open. The ARG for the alarm will direct assessing indication to see if a cooler rupture has occurred. This choice could be correct if there were indications of an actual cooler rupture and the cooler is not correctly isolated.

B. Incorrect: First part is plausible since there are still two RBS trains and one RBCU train operable. If you assumed that RBS and RBCU's RBCUs are redundant systems then you would deduce that safety function is still available since both RBS trains remain operable. Second part is correct. It also has plausibility if you assume the first part is correct since not all TS required entries into LCO 3.0.3 occur as a result of a loss of safety function of the subject SSC.

C. Incorrect: First part is correct. Second part is plausible per explanation in A.

D. CORRECT: Per bases of TS 3.6.5 the safety analysis assumes at least one RBS train and 2 RBCU are available following a LOCA therefore the minimum required to meet the safety function is not available. TS 3.6.5 Condition H H directs immediate entry into LCO 3.0.3.

Technical Reference(s): TS 3.6.5 and its bases, ARG fir 1SA9/C9ISA9IC9 Proposed references to be provided to applicants during examination: NONE Learning Objective: ADM-TSS R5, R6 Question Source: NEW Question History: Last NRC Exam NIA N/A Question Cognitive Level: Comprehension and Analysis

2010A NRC SENIOR REACTOR OPERATOR EXAM 1

I POINT Question 88 Unit 3 initial conditions:

Time=1200

Time = 1200

Reactor power = = 100%

Current conditions:

Time Time=1201

= 1201

.** RCS Pressure = 86 psig slowly decreasing

RB Pressure = 28 psig slowly increasing

3B Reactor Building Spray (RBS) pump failed to start Based on the above conditions, which ONE of the following predicts the impact of the 3B RBS pump failure on Iodine concentration in containment following a LOCA and describes actions required of the RO by EOP Enclosure 5.1 (ES Actuation)?

Iodine concentrations assumed in the Safety Analysis for a Large Break LOCA _ __

be exceeded and EOP Enclosure 5.1 require SRO approval to start the 3B RBS pump.

A. will /I does B. will /I does NOT C. will NOT /I does D. will NOT / does NOT

2010A NRC 2010A NRC SENIOR SENIOR REACTOR REACTOR OPERATOR OPERATOR EXAM EXAM Question 88 Question 88 T2/G1 - cpw T2IGI - cpw Containment Spray 026A2.04, Containment Spray System System Ability to (a) predict the impacts (a) predict impacts of the following malfunctions malfunctions or operations on on the CCS; CCS; and based on those predictions, (b) based predictions, use use procedures procedures to correct, control, or mitigate the consequences of those malfunctions or operations:

Failure of spray pump (3.9/4.2)

KIA MATCH ANALYSIS Requires predicting the impact of the failure of a RBS pump on the consequences of a LBLOCA and knowledge of procedure mitigation of the failure. In the case of Encl. End. 5.1 it is more than just OK not to take actions on components that do not reposition, it is a required action not to take the actions since it would impede progress through the enclosure and jeopardize meeting TCA's. TCAs.

SRO-ONLY SRO-ONL Y ANALYSIS Requires knowledge from TS bases regarding minimum RBS Pump requirements to perform Safety Function assumed for RBS ANSWER CHOICE ANALYSIS Answer: C lncorrect:First part is plausible since -1/2 RBS flow has been lost and not all A. Incorrect:First systems at Oconee that are credited in safety analysis have a redundant train that can be lost and still accomplish the safety function in question. Second part is correct.

B. Incorrect: Both parts are incorrect. First part is plausible per A. Second part is plausible since some failed ES components (example LPIP's) LPIPs) are addressed directly End 5.1 and do not require SRO approval to restart/reposition.

in Encl C. One reactor building spray train is required to remove iodine from the containment atmosphere and maintain concentrations below those assumed in the safety analysis. (ADM-TSS page 94) EOP Encl End 5.1 directs the RO to notify SRO to evaluate starting components not in their ES position and does NOT direct the RO to attempt to start the pump. It is critical to the success of Encl. End.

5.1 that the RO does not take the time to attempt to start the RBS pump to ensure TCAs TCA's in End Encl 5.1 are met. Based on this requirement, it is actually a required action to NOT take the time to start the RBS pump and SRO approval would be required for the RO to start the pump since there is no direct procedural guidance.

D. Incorrect: First part is correct. Second part is plausible since some failed ES LPIP's) are addressed directly in End components (example LPIPs) Encl 5.1. It is critical to the success of End.

Encl. 5.1 that the RO does not take the time to attempt to start the RBS pump to ensure TCAs TCA's in End Encl 5.1 are met. Based on this requirement, it is actually a required action to NOT take the time to start the RBS pump. Second part is plausible since some failed ES components (example LPIPs) LPIP's) are addressed directly in End Encl 5.1 and do not require SRO approval to restart/reposition.

Technical Reference(s): TS 3.6.5 bases, ADM-TSS, EOP End. Encl. 5.1 Proposed references to be provided to applicants duringduring examination: NONE NONE Learning Objective:

Objective: ADM-TSS R5, EAP-ESA EAP-ESA R9 Question Source: NEW NEW Question History:

History: Last NRC NRC Exam NIA Question Question Cognitive Cognitive Level:

Level: Analysis Analysis and and Comprehension Comprehension

2010A NRCNRC SENIOR SENIOR REACTOR REACTOR OPERATOR OPERATOR EXAMEXAM 1I POINT POINT Question 89 Unit 11 plant conditions:

Unit

Reactor power = = 20% stable IA Main Feedwater Pump in service

1A Based on the above conditions, which ONE of the following describes conditions that will require entry into the EOP AND the initial actions required by the EOP if one MSRV does NOT reseat.

A. FDWPT Exhaust Vacuum == 23.2 inches HG / Transfer to EHT tab B. FDWPT Exhaust Vacuum == 23.2 inches HG / Manually decrease SG pressure C. Feedwater pump bearing oil pressure = = 3.1 psig / Transfer to EHT tab D. Feedwater pump bearing oil pressure = = 3.1 psig / Manually decrease SG pressure

2010A NRC SENIOR REACTOR OPERATOR EXAM Question 89 T2/G1 T2IGI - cpw 059G2.2.42, Main Feedwater Knowledge of system set points, interlocks, and automatic actions associated with EOP entry conditions.

(4.5/4.6)

KIA MATCH ANALYSIS Requires knowledge of Main Feedwater pump trip setpoints and knowledge of EOP entry conditions.

SRO-ONLY SRO-ONL Y ANALYSIS Requires assessing abnormal plant conditions and prescribing a section of a procedure with which to proceed. Internal steps in the Subsequent Actions tab will have the SRO determine if a MSRV is stuck open and if so will provide guidance to reduce MS pressure in steps to reseat the valve. The actions are NOT part of entry conditions and are more detailed than major mitigation strategy.

ANSWER CHOICE ANALYSIS Answer: D lo vacuum alarm setpoint is 25 inches. The A. Incorrect: First part is plausible since the 10 misconception that the 10lo vacuum trip for either the main turbine (21.75")

(21.75) or MFDWP (19) is 25 inches would lead to this choice. Second part is plausible since a turbine (19")

stuck open MSRV could exhibit characteristics of a main steam line leak/break and without specific guidance in the EOP could be determined to be EHT therefore a transfer to the EHT tab would be plausible.

lo vacuum alarm setpoint is 25 inches. The B. Incorrect: First part is plausible since the 10 misconception that the 10lo vacuum trip for either the main turbine (21.75")

(21.75) or MFDWP (19) is 25 inches would lead to this choice. Second part is correct.

turbine (19")

C. Incorrect: First part is correct. Second part is plausible since a stuck open MSRV could exhibit characteristics of a main steam line leak/break and without specific guidance in the EOP could be determined to be EHT therefore a transfer to the EHT tab would be plausible.

D. CORRECT: The low bearing oil pressure trip for a main feedwater pump is ~ 4 psig therefore the operating FDW pump would trip. With no Feedwater pumps operating a Rx trip would occur requiring entry into the EOP. Once in SA's SAs MSRV status is verified. If any MSRV is still open, directions are given to reduce SGSO pressure in 10 psi increments in an attempt to reseat the valve with a limit on decreasing pressure being maintain RCS temp ~ > 532 degrees.

Technical Reference(s): CF-FPT, STG-EHC, EOP Proposed references to be provided to applicants during examination: NONE Learning Objective: CF-FDW R8,STG-EHC R10, RIO, EAP-SA R15 Question Source: NEW Question History: Last NRC Exam N/A Question Cognitive Level: knowledge and fundamentals

2010A NRC SENIOR REACTOR OPERATOR EXAM 1

I POINT Question 90 I initial conditions:

Unit 1

Unit shutdown in progress

RCS pressure = 1550 slowly decreasing

RCS temperature = = 495 degrees F slowly decreasing Current conditions:

LBLOCA occurs

RCS pressure = = 20 psig slowly decreasing

=

RB pressure = 3.4 psig slowly increasing SCMs = OaF

SCM's 0°F stable Based on the above conditions, which ONE of the following describes whether Containment isolation is complete AND if HPI is required by TS bases to mitigate the event?

ASSUME NO OPERATOR ACTIONS Containment isolation _ _ _ complete AND HPI _ _ _ required to mitigate the LBLOCA.

A. is / is B. is / is NOT isNOT C. is NOT / is D. is NOT / is NOT

NRC SENIOR 2010A NRC SENIOR REACTOR REACTOR OPERATOR OPERATOR EXAM EXAM Question 90 T2/G1 - cpw I 03G2.4.9, Containment 103G2.4.9, Containment Knowledge of low Knowledge low power/shutdown power/shutdown implications implications in in accident (e.g.,

(e.g., loss loss of coolant residual heat accident or loss of residual heat removal) mitigation mitigation strategies.

(3.8/4.2)

K/A MATCH ANALYSIS Requires knowledge of the impact of being below 1600 psig when a LOCA occurs on containment isolation SRO-ONLY SRO-ONL Y ANALYSIS Requires knowledge of the design bases of HPI injection as described in the bases of TS 3.5.2 (HPI).

ANSWER CHOICE ANALYSIS Answer: B A. Incorrect: First part is correct. Second part is plausible since it would be correct if the question were asking about a SBLOCA however our LBLOCA analysis does not take any credit for HPI injection since the RCS would depressurize to allow LPI to inject.

B. CORRECT: Although ES HPI would already be bypassed by the shutdown procedure (done between 1675 psig and 1600 psig), only the RCS pressure portion of ES 11&2&2 is bypassed. With ES HPI bypassed, RB pressure reaching 3 psig would still result in an ES 1-6 actuation and therefore a complete RB isolation. The bases of TS 3.5.2 (HPI) explains that while HPI HPJ is credited to mitigate a SBLOCA, it is not credited in the analysis for a LBLOCA.

C. Incorrect: First part is plausible since ES HPI bypass occurs during a unit shutdown between 1675 and to 1600 psig however only the RCS pressure input to ES 1 &2 are 1&2 bypassed. Since RB pressure is is>> 3 psig, ES 1 1&2

&2 would still actuate. The misconception that the HPI bypass function will prevent RB pressure from actuating ES 1 1&2

&2 would result in this choice. Second part is plausible since it would be correct if the question were asking about a SBLOCA however our LBLOCA analysis does not take any credit for HPI injection since the RCS would depressurize to allow LPI to inject.

D. Incorrect: First part is plausible since ES HPI bypass occurs during aa unit shutdown between 1675 1675 psig and 1600 1600 psig however only the RCS pressure input to ES 1 &2 1&2 are bypassed. Since RB pressure is >> 33 psig, ES 1&2 1&2 would still actuate. The misconception that the HPI bypass function will prevent RB pressure from actuating ES 1&2 1&2 would result in this choice. Second part is correct.

Technical Reference(s): TS 3.5.23.5.2 (HPI) IC-ES IC-ES OPIIIA/1102/010 OP/1/Al1102/010 (Unit Shutdown Procedure Proposed references to be provided to applicants duringduring examination: NONE NONE Learning Objective:

Objective: IC-ES IC-ES RIO RiO ADM-TSS R5 Question Source:

Source: NEW NEW Question History: Last NRC Question NRC Exam N/A N/A Question Cognitive Cognitive Level: Comprehension Comprehension and Analysis

2010A NRC 2010A NRC SENIOR SENIOR REACTOR REACTOR OPERATOR OPERATOR EXAM EXAM 11 POINT POINT Question 91 Unit 1I plant Unit plant conditions:

=

Reactor power = 100%

1I RC-1 fails open

11 RC-3 will NOT close Based on the above conditions, which ONE of the following describes the initial response of 1IHP-120 HP-120 (RC VOLUME CONTROL) valve position AND the action(s) required by AP/44 (Abnormal Pressurizer Pressure Control)?

11HP-120 will....

HP-120 valve position wilL ...

A. remain approximately the same /I Trip the reactor and secure the 11AI A 1 and 11A2 A2 RCPs RCP's B. remain approximately the same /I Throttle 1I HP-120 HP-I 20 and 11 HP-7 as required to stabilize RCS pressure C. throttle fully open /I Trip the reactor and secure the 1A1 and 1A2 RCP'sRCPs D. throttle fully open I/ Throttle 1 1 HP-120 and 1I HP-7 as required to stabilize RCS pressure

2010A NRC SENIOR REACTOR OPERATOR EXAM Question 91 T2/G2 T21G2 -cpw 011A2.06, Pressurizer Level Control Ability to (a) predict the impacts of the following malfunctions or operations on the PZR LCS; and (b) based on those predictions, use procedures to correct, control, or mitigate the consequences of those malfunctions or operations:

Inadvertent PZR spray actuation (3.7/3.9)

KIA MATCH ANALYSIS RC1 will have on 1 Requires predicting the impact that the failure of RC-1 IHP-120 HP-120 and the procedural actions required to mitigate the consequences of the malfunctions.

SRO-ONLY ANALYSIS SRO-ONLY Requires assessing plant conditions and prescribing a section of a procedure (path in AP/44 with RCS pressure continuing to decrease) to mitigate the event. event Requires more than just major mitigation strategy.

ANSWER CHOICE ANALYSIS Answer: A A. CORRECT: 1 RC-3 failed open will have no impact on the operation of Pzr LCS IRC-3 since a 1 RC-3 failure has no impact on the setpoint of 1 IRC-3 IHP-120, HP-120, RCS temp, or the volume of water in the RCS. AP144 AP/44 directs manually tripping the reactor and once power is <1% the Al A1 and A2 RCP's RCPs are stopped to decrease spray flow.

B. Incorrect: First part is correct. Second part is plausible since the actions described are used to stabilize RCS pressure however it is under different circumstances. If the pressurizer is subcooled, these actions are taken to stabilize pressure while the pressurizer is heated to saturation.

C. Incorrect: First part is plausible since it would be correct if the failure resulted in an immediate Rx trip. The failure would cause a Rx trip however since Pzr heaters are available, there is a significant delay before the RCS low pressure trip setpoint is reached. Second part is correct D. Incorrect: First part is plausible since it would be correct if the failure resulted in an immediate Rx trip. The failure would cause a Rx trip however since Pzr heaters are available, there is a significant delay before the RCS low pressure trip setpoint is reached. Second part is plausible since the actions described are used to stabilize RCS pressure however it is under different circumstances. If the pressurizer is subcooled, these actions are taken to stabilize pressure while the pressurizer is heated to saturation AP144 and EOP Technical Reference(s): AP/44 Proposed references to be provided to applicants during examination: NONE Learning Objective: EAP-APG R9 Question Source: NEW Question History: Last NRC Exam N/A Question Cognitive Level: Knowledge and Fundamentals

2010A NRC SENIOR REACTOR OPERATOR EXAM I POINT 1

Question 92 Unit 3 initial conditions:

Reactor power = = 100%

The volume of active TSP required by SLC 16.6.10 (Trisodium Phosphate) is NOT met Current conditions:

LOCA/LOOP occurs

LOCAILOOP Based on the above conditions, which ONE of the following describes the consequence of the inadequate TSP volume AND when TSP performs its credited function?

A. EOP will direct going to single Reactor Building Spray pump operation / During the injection phase B. EOP will direct going to single Reactor Building Spray pump operation / During the recirculation phase C. Acceptable offsite dose limits may be exceeded / During the injection phase D. Acceptable offsite dose limits may be exceeded / During the recirculation phase

NRC SENIOR REACTOR OPERATOR EXAM 2010A NRCSENIOR Question 92 T21G2 -cpw T2/G2 027G2.2.40, Containment Iodine Removal Ability to apply Technical Specifications for a system.

(3.4/4.7)

KIA MATCH ANALYSIS Per NRC, ask about TSP SLC (16.6.10) bases. Requires applying information from the spec and bases of SLC 16.6.10 (TSP) to a specific situation.

SRO-ONLY SRO-ONL Y ANALYSIS Requires knowledge of bases information regarding TSP baskets for iodine removal per SLC 16.6 10 ANSWER CHOICE ANALYSIS Answer: D A. Incorrect: First part is plausible the EOP does direct going to single RBS pump operation during LOCA mitigation however it does so as a result of valve failures to increase the time you remain in the injection phase and therefore time to address the valve failure. Second part is plausible since it would be correct if the question were regarding RBS system impact on offsite doses.

B. Incorrect: First part is plausible the EOP does direct going to single RBS pump operation during LOCA mitigation however it does so as a result of valve failures to increase the time you remain in the injection phase and therefore time to address the valve failure. Second Second part is correct in that TSP baskets are credited with keeping Iodine in solution during the recirc phase of a LOCA..

C. Incorrect: First part is correct. Second part is plausible since it would be correct if the question were regarding RBS system impact on offsite doses.

D. CORRECT: TSP baskets are credited with keeping Iodine in solution during the recirc phase of a loca and thereby ensuring offsite dose within limits during DBA.

Technical Reference(s): SLC 16.6.10 bases CH-CAS Proposed references to be provided to applicants during examination: NONE Learning Objective: ASM-TSS R5 Question Source: NEW Question History: Last NRC Exam NIA Question Cognitive Level: Comprehension and Analysis

2010A NRC SENIOR REACTOR OPERATOR EXAM I POINT 1

Question 93 Unit 3 intiaI conditions:

initial

Reactor power = = 100%

Fuel movement in Unit 3 Spent Fuel Pool Current conditions:

3RIA-6 (SFP) in HIGH alarm

3RIA-41 (SFP Gas) in HIGH alarm 35A-8/B9 (PROCESS MONITOR RADIATION HIGH) in alarm

3SA-8/B9 Based on the above conditions, which ONE of the following describes the Abnormal Procedure of the highest priority and the Outside Air Booster Fans that will be started as part of the mitigating actions?

A. AP/9 (Spent Fuel Damage) I/ Unit 3 Outside Air Booster Fans ONLY B. AP/9 (Spent Fuel Damage) /I Unit 1 I and 2 AND Unit 3 Outside Air Booster Fans C. AP/18 (Abnormal Release of Radioactivity) I Unit 3 Outside Air Booster Fans ONLY D. AP/18 (Abnormal Release of Radioactivity) I Unit 1 1 and 2 AND Unit 3 Outside Air Booster Fans

2010A NRC SENIOR REACTOR OPERATOR EXAM Question 93 T2/G2 T21G2 -cpw 072G2.4.4, Area Radiation Monitoring Ability to recognize abnormal indications for system operating parameters that are entry-level conditions for emergency and abnormal operating procedures.

(4.5/4.7)

K/A MATCH ANALYSIS KIA Requires recognizing RIA-6 as part of entry conditions for AP/9 SRO-ONLY SRO-ONL Y ANALYSIS Requires recognizing entry conditions for 2 APs AP's are met and prioritizing which AP should be directed by the PO PD consistent with OMP 1-18 section 5.3 (Procedure Implementation)

ANSWER CHOICE ANALYSIS Answer: B A. Incorrect: First part is correct. Second part is plausible since the fuel handling SEP it would be reasonable to deduce that only Unit 3 accident is in the Unit 3 SFP Outside Air Booster Fans would be needed.

B. CORRECT: Entry conditions to both AP/9 API9 and APII8 AP/18 are met however AP/18APII8 (in this case) contains no actions to control the plant or mitigate the event API9 would be the higher priority AP to be directed by the PD.

therefore AP/9 Choosing AP/9 first is correct path to initiated SFVS and OABF'sOABFs most expeditiously. AP/9 then directs starting both Unit 3 AND Unit 1&2 OABF's. OABFs.

C. Incorrect: First part is plausible since entry conditions are met and AP/18 will need to be initiated. Second part is plausible since the fuel handling accident is in the Unit 3 SEP it would be reasonable to deduce that only Unit 3 Outside Air Booster Fans SFP would be needed.

D. Incorrect: First part is plausible since entry conditions are met and AP/18 will need to O.

be initiated. Second part is correct Technical Reference(s): APII8 AP/18 (Abnormal Release of Radioactivity), AP/9 API9 (Spent Fuel Damage)

Proposed references to be provided to applicants during examination: NONE Learning Objective: EAP-APG R8, R9 Question Source: NEW Question History: Last NRC Exam NIA N/A Question Cognitive Level: Comprehension and Analysis

NRC SENIOR 2010A NRC SENIOR REACTOR REACTOR OPERATOR OPERATOR EXAM EXAM I1 POINT POINT Question 94 Question require making Which ONE of the following describes a condition that would require making a plant plant page implement Emergency page to implement Emergency Dose Dose Limits Limits AND whether to include include SG tube leakage when calculating RCS Pressure Boundary leakage (gpm) in accordance with Tech Spec 3.4.13 (RCS Operational Leakage)?

A. 45 gpm SGTR /I no 45gpmSGTR B. 45 gpm SGTR /I yes C. 45 gpm RCS leak /I no D. 45 gpm RCS leak /I yes

2010A NRC 2010A NRC SENIOR SENIOR REACTOR REACTOR OPERATOR OPERATOR EXAMEXAM Question 94 Conduct of Ops-Conduct Ops- (selection (selection ofof procedures)

Drocedures)

H Knowledge of criteria 2.1.14, Knowledge criteria or conditions conditions that require require plant-wide plant-wide announcements, such as pump starts, reactor as pump reactor trips, mode mode changes, changes, etc.

(3.1 ) ..

K/A MATCH ANALYSIS KIA Requires knowledge of conditions that require a plant-wide announcement regarding implementation of Emergency Dose Limits SRO-ONLY SRO-ONL Y ANALYSIS Requires knowledge from the bases of TS 3.4.13 regarding what constitutes RCS Pressure Boundary Leakage. That info excludes SG tube leakage from being pressure boundary leakage when applying the TS limits on leakage in TS 3.4.13 and that information is only available in the bases of the TS.

ANSWER CHOICE ANALYSIS Answer: A A. CORRECT: EDL's EDLs only apply when the EOP has been initiated. Once in the EOP, either a SGTR OR a LOCA will result in EDL's EDLs being in affect. The 45 gpm SGTR would require entry into the EOP since it exceeds the 25 gpm threshold value for EOP entry. The 45 gpm RCS leak will be handled from AP/2 (RCS leakage) therefore the SGTR would require EDL's. EDLs. The bases ofTS of TS 3,4,13 (RCS

. leakage) clearly excludes SG SO tube leakage from being "Pressure Pressure Boundary" Boundary leakage.

B. Incorrect: First part is correct. Second part is plausible since the SG tubes are actually a barrier that withstands RCS pressure however based on specific knowledge contained in the bases of TS 3.4.13, SGTR leakage is excluded from the requirements of Pressure Boundary Leakage.

C. Incorrect: First part is plausible since it is reasonable to assume (and correct to assume) that sufficient RCS leakage would require implementing EDL's EDLs however 45 gpm is not enough. The misconception that EDL's EDLs apply to any significant RCS leakage (instead of the actual requirement of a LOCA) would result in this choice.

Second part is correct D. Incorrect: First part is plausible since it is reasonable to assume (and correct to assume) that sufficient RCS leakage would require implementing EDLs EDL's however 45 gpm is not enough. The misconception that EDLs EDL's apply to any significant RCS leakage (instead of the actual requirement of a LOCA) would result in this choice.

Second part is plausible since the SG tubes are actually aa barrier that withstands RCS pressure however based on specific knowledge contained in the bases of TS 3.4.13, SGTR leakage is excluded from the requirements of Pressure Boundary Leakage.

Technical Reference(s): OMP-1-2, OMP 2-1, TS 3.4.13 Proposed references to be provided to applicants duringduring examination: NONE NONE Learning Objective:

Objective: ADM-TSS R5 Question Source:

Source: NEW NEW Question Question History: Last NRC NRC Exam N/A NIA Question Cognitive Question Cognitive Level:

Level: Knowledge Knowledge and and Fundamentals Fundamentals

2010A NRC SENIOR REACTOR OPERATOR EXAM I POINT 1

Question 95 Unit 2 initial conditions:

Refueling in progress

FTC level == >21.34 feet stable

No water additions are being made to the system

2A LPI train is operable and in service Current conditions:

Refueling SRO desires stopping the 2A LPI Pump to aid in inserting a fuel assembly

2A LPI pump has been in continuous operation for the previous 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months Based on the above conditions, which ONE of the following describes whether the 2A OP/21AJ1502/007 (Operations Defueling LPI pump may be stopped in accordance with OP/2/A/1502/007

/Refueling Responsibilities) and the Tech Spec bases for requiring only 1I OPERABLE IRefueling DHR loop in this condition?

A. 2A LPI Pump may be stopped for up to 11 hour1.273148e-4 days 0.00306 hours 1.818783e-5 weeks 4.1855e-6 months per 8 hour9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months period.

FTC level is within TS limits and provides adequate backup decay heat removal.

B. 2A LPI Pump may be stopped for up to 1 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months per 8 hour9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months period.

Spent Fuel Cooling system provides adequate backup decay heat removal.

C. 2A LPI Pump may NOT be stopped FTC level is below TS limits and cannot provide adequate backup decay heat removal.

D. 2A LPI Pump may NOT be stopped Spent Fuel Cooling system can NOT provide adequate backup decay heat removal.

2010A NRC SENIOR REACTOR OPERATOR EXAM Question 95 - CPW Conduct of 0 Ops s-2.1.41 Knowledge of the refueling process. (3.77) 43.6 KIA MATCH ANALYSIS Requires knowledge of fuel handling procedures and requirements SRO-ONL SRO-ONLY Y ANALYSIS Requires knowledge of procedures and limitations involved in core alterations (43.6), TS and Bases (43.2)

ANSWER: A A. CORRECT: TS 3.9.4 (Refueling Ops- DHR and Coolant Circulation -High High Water Level) is in effect as water level is ~ 21.34 ft. This condition requires only 1 I DHR loop to be operable and in service since the water can provide adequate backup decay heat removal. TS and Refueling procedures limits & &

precautions allow SRO to grant permission for the operating loop to be secured for up to 1 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months every 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months with adequate level.

nd B. Incorrect: First part is correct. 2 2 part is incorrect but plausible since Spent Fuel Cooling (SFC) helps to provide decay heat removal but is not the basis for allowing the pump to be secured for up to an hour.

C. Incorrect: First part is incorrect but plausible if TS 3.9.5 criteria are misapplied to this situation. TS3.9.5 (DHR and Coolant Circulation - Low Water Level) requires 2 operable DHR loops with one loop in service (no time is allowed for a pump to be nnd 2d secured). 2 part is wrong but plausible in that it would be true if level was below the refueling level of 21.34 ft.

D. Incorrect: First part is incorrect but plausible if TS 3.9.5 criteria are misapplied to this situation. TS3.9.5 (DHR and Coolant Circulation - Low Water Level) requires 2 operable DHR loops with one loop in service (no time is allowed for a pump to be nnd 2d secured). 2 part is incorrect but plausible since Spent Fuel Cooling (SFC) helps to provide decay heat removal but is not the basis for allowing the pump to be secured for up to an hour.

0P101A115061001, OP/2/A11502/007, Technical Reference(s): OP/0/Al1506/001, 0P121A115021007, TS 3.9.4, TS 3.9.5 Proposed references to be provided to applicants during examination: None Learning Objective: FH-FHS R21, R32" R32 II ADM-TSS R5, R6 Question Source: BANK Question History: Last NRC Exam 2009 Question 95 Question Cognitive Level: Knowledge and Fundamentals

2010A NRC SENIOR REACTOR OPERATOR EXAM I POINT 1

Question 96 Unit 11 plant conditions:

OP/I/NI 102/001 (Controlling Procedure for Unit Startup) Enclosure 4.7 (Unit

OP/1/A/1102/001 Startup From 532F/2155 psig To MODE 1) I) in progress

ECP = = 68% on Group 6

Group 5 = 76% withdrawn

Control power will NOT turn on to group 6 rods

Repairs will take about 4 hours4.62963e-5 days 0.00111 hours 6.613757e-6 weeks 1.522e-6 months following...

Which ONE of the following ...

(1) describes the direction that will be given to the OATC based on the above plant conditions...

conditions ...

AND (2) the consequences of power operations while in the Unacceptable Operation region of the rod curves in the COLR in accordance with the bases for TS 3.2.1 (Regulating Rods Position Limits)?

A. Insert control rods until all Safety Rods are fully inserted I Required shutdown margin may not exist B. Insert control rods until all Safety Rods are fully inserted I/ Quadrant Power Tilt limits may be exceeded C. Insert control rods to Group 1 1 at 50% I/ Required shutdown margin may not exist D. Insert control rods to Group 1 1 at 50% I/ Quadrant Power Tilt limits may be exceeded

2010A NRC SENIOR REACTOR OPERATOR EXAM Question 96 Equipment Control -cpw 2.2.2, Ability to manipulate the console controls as required to operate the facility between shutdown and designated power levels.

(4.1))

(4.1 KIA MATCH ANALYSIS NO 43 tie. Per NRC, OK to ask about SRO decision resulting N resLilting in directing manipulation of controls (example inserting rods with missed ECP)

Requires directing RO to manipulate console controls during Reactor Startup.

SRO-ONLY SRO-ONL Y ANALYSIS Requires knowledge of TS bases behind different portions of rod worth curves as described in TS 3.2.1 (Regulating Rods Position Limits) bases ANSWER CHOICE ANALYSIS Answer: C A. Incorrect: First part is plausible since procedure guidance does direct inserting Safety Rods if the startup is delayed however the procedure directs leaving Gp 1 1 50% withdrawn for available negative reactivity insertion. Second part is correct.

B. Incorrect: First part is plausible since procedure guidance does direct inserting Safety Rods if the startup is delayed however the procedure directs leaving Gp 1 1 50% withdrawn for available negative reactivity insertion. Second part is plausible since control rod position does affect tilt readings however homogeneous group rod positions generally effect imbalance and not tilt. It would be reasonable to have a misconception that resulting in confusing the tilt vs imbalance impact of rod positions. Additionally, rod position can impact QPT assuming rod misalignment issues exist therefore associating tilt issues with control rod position issues is plausible C. CORRECT: Procedure limits and precautions direct inserting rods to Gp 1 I at 50% if startup is delayed once approach to criticality had begun. The bases of TS 3.2.1 (Regulating Rods Position Limits) describes the consequences of being in the unacceptable region as potentially not having the required Shutdown Margin.

D. First part is correct. Second part is plausible since control rod position does affect tilt readings however homogeneous group rod positions generally effect imbalance and not tilt. It would be reasonable to have a misconception that resulting in confusing the tilt vs imbalance impact of rod positions. Additionally, rod position can impact QPT assuming rod misalignment issues exist therefore associating tilt issues with control rod position issues is plausible.

OPIIIAIIIO2IOOI EncI4.7, Technical Reference(s): OP/1/A11102/001 End 4.7, TS 3.2.1 (Regulating Rods Position Limits)

Proposed references to be provided to applicants during examination: NONE R37, 38 ADM-TSS R5 Learning Objective: CP-011 R37,38 Question Source: NEW Question History: Last NRC Exam N/A Question Cognitive Level: Knowledge and Fundamentals

2010A NRC SENIOR REACTOR OPERATOR EXAM I POINT 1

Question 97 Unit 3 plant conditions:

LPI aligned to normal DHR mode using 3A LPI pump

3B LPI train is aligned in its ECCS mode

ALL RCP's RCPs secured

CETCs = 196°F stable CETC's

RCS Tcold = 205°F stable

3A LPI Cooler Outlet temperature = = 195°F stable Based on the above conditions, which ONE of the following describes the current plant MODE AND the number of OPERABLE DHR loops?

A. MODE MODE44 / 1 1 MODE44 / 2 B. MODE MODE55 //11 C. MODE MODES5 //22 D. MODE

2010A NRC SENIOR REACTOR OPERATOR EXAM Question 97 Equipment Control - -

2.2.35 Ability to determine Technical Specification Mode of Operation. (4.5)

K/A MATCH ANALYSIS KIA Requires analyzing plant data and determining TS MODE of operation SRO-ONLY SRO-ONL Y ANALYSIS Requires knowledge from the TS Bases of TS 3.4.7 regarding alignment requirements of an LPI loop when being credited for an operable DHR loop ANSWER CHOICE ANALYSIS Answer: D A. Incorrect: First part is plausible since Tc is > RCPs operating, RCS

> 200°F. With no RCP's temperature is LPI Cooler Outlet temperature. Based on misconception that Tc should be used for RCS temperature the Rx would be in MODE 4. Second part is plausible since the second LPI loop is aligned in the ECCS mode. It would be plausible to have the misconception that the loop not in operation would be an inoperable DHR loop since it would have to be aligned in the DHR mode to be able to provide Decay Heat Removal capability.

is>> 200°F. With no RCP's B. Incorrect: First part is plausible since Tc is RCPs operating, RCS temperature is LPI Cooler Outlet temperature. Based on misconception that Tc should be used for RCS temperature the Rx would be in MODE 4. Second part is correct LPI loop is C. Incorrect: First part is correct. Second part is plausible since the second LPlloop aligned in the ECCS mode. It would be plausible to have the misconception that the loop not in operation would be an inoperable DHR loop since it would have to be aligned in the DHR mode to be able to provide Decay Heat Removal capability.

0. CORRECT: Since no RCP's D. RCPs are operating, LPI cooler outlet temp is RCS temp and once RCS temp goes below 200°F MODE 5 is entered. TS 3.4.7 describes operable DHR loop as one that is capable of being manually realigned to the DHR mode of operation therefore both LPI loops are operable DHR loops.

Technical Reference(s): TS 3.4.6, TS 3.4.7, SR 3.0.3 Proposed references to be provided to applicants during examination: TS 3.4.6 & 3.4.7 Learning Objective: ADM-ITS R3 Question Source: NEW Question History: Last NRC Exam NIA N/A Question Cognitive Level: Comprehension and Analysis

2010A NRC SENIOR REACTOR OPERATOR EXAM I POINT 1

Question 98 Unit 3 plant conditions:

Startup in progress

Lead blankets discovered on 3B HPI injection nozzles

38 HPI train inoperable Engineering determines that the lead blankets render 3B

Planned Special Exposure will be used to remove the lead blankets describes...

Based on the above conditions, which ONE of the following describes ...

(TEDE)

(1) the maximum exposure (TED E) to an individual allowed while removing the lead blankets AND (2) the maximum Reactor power (%) at which HPI can perform its credited functions with ONE HPI train incapable of providing flow (neither automatically nor manually) in accordance with Tech Spec bases?

A. 5 rem /I 100 5rem B. 5 rem /I 75 c.

C. 25 rem /100

/ 100 D. 25 rem I/ 75

2010A NRC SENIOR REACTOR OPERATOR EXAM Question 98 Radiation Control - -

2.3.4 Knowledge of radiation exposure limits under normal or emergency conditions.

(3.7)

KIA K/A MATCH ANALYSIS Requires knowledge of Planned Special Exposure limits that apply under exceptional circumstances.

"exceptional" SRO-ONL SRO-ONLY Y ANALYSIS Requires knowledge of bases for TS 3.5.2 (HPI)

ANSWER CHOICE ANALYSIS Answer: B A. Incorrect: First part is correct. Second part is plausible since the normal situation for safety systems is to be "single single failure proof' proof which generally means there is one train of the system required to perform the safety function and one additional train. This is true for most all ONS safety systems (ex. LPI, RBS, RBCU) however a single train of our HPI system is not capable of mitigating all break sizes and locations of SBLOCAs when above 75% RTP.

SBLOCA's B. CORRECT: Planned Special Exposure maximum exposure is 5 rem TEDE in any calendar year therefore 5 rem would be the maximum allowed. If the plant is operating at> 75% RTP, and one HPI train is inoperable and incapable of being automatically actuated or manually aligned from the Control Room to provide flow post-accident, the HPI System would be incapable of performing its safety function.

C. Incorrect: First part is plausible since 25 rem is the total lifetime limit for Planned Special Exposures. Second part is plausible as described in A.

D. Incorrect: First part is plausible since 25 rem is the total lifetime limit for Planned Special Exposures. Second part is correct.

Technical Reference(s): TS 3.5.2, RAD-RPP Proposed references to be provided to applicants during examination: NONE Learning Objective: ADM-ITS R3, RAD-RPP R7 Question Source: NEW Question History: Last NRC Exam NIA N/A Question Cognitive Level: Knowledge and Fundamentals

2010A NRC SENIOR REACTOR OPERATOR EXAM I POINT 1

Question 99 Plant conditions:

All 3 Units reactor power =

= 100%

ISA-3/B6 1SA-3/B6 (FIRE ALARM) actuated

NEOs dispatched to the Turbine Building Basement (Unit 11 and 2 Powdex area)

NEO's Current conditions:

TBBIK28. Heavy smoke and rolling flames (5-1 Oft.)

NEO reports: Fire location is TBB/K28.

spreading out from the Powdex Alarm Panel Based on the above conditions, which ONE of the following describes the unit(s) requiring a reactor trip AND who is allowed to serve as a Fire Brigade leader in accordance with the bases of SLC 16.13.1 (Minimum Station Staffing Requirements)

Requirements)??

REFERENCE PROVIDED A. ALL units I/ SRO ONLY B. Unit 2 (only) I/ SRO ONLY C. ALL units I/ SRO OR an NEO with appropriate qualifications D. Unit 2 (only) I/ SRO OR an NEO with appropriate qualifications

2010A NRC SENIOR REACTOR OPERATOR EXAM Question 99

/E-Plan -

Emerg Procs IE-Plan -

2.4.27 Knowledge of "fire fire in the plant" plant procedures. (3.9)

K/A MATCH ANALYSIS KIA Requires knowledge of and ability to utilize procedures related to fires in the plant SRO-ONLY SRO-ONL Y ANALYSIS Requires knowledge from the bases of SLC 16.13.1 regarding who can serve as fire brigade leader.

ANSWER CHOICE ANALYSIS Answer: D A. Incorrect: First part is plausible since misreading the Attachment in the ARG could result in determining that all units must enter AP/25 and therefore trip their reactors.

Second part is plausible since under normal conditions the SRO is the Fire Brigade leader.

B. Incorrect: First part is correct. Second part is plausible since under normal conditions the SRO is the Fire Brigade leader.

C. Incorrect: First part is plausible since misreading the Attachment in the ARG could result in determining that all units must enter AP/25 and therefore trip their reactors.

Second part is correct.

D. CORRECT - The ARG defines this fire as a CHALLENGING ACTIVE FIRE.

Utilizing Attachment 1 I of the ARG you will determine you are inside an SSF Risk area that affects only Unit 2. The ARG directs the affected control room crew to AP125 and AP125 enter AP/25 AP/25 directs manually tripping the reactor. The bases of SLC 16.13.1 allows for either an SRO or a qualified NEO be the fire brigade leader.

ISA-31B6 (FIRE ALARM) ,AP/25, Technical Reference(s): 1SA-3/B6 ,AP125, SLC 16.13.1 bases ISA-3/B6 (FIRE Proposed references to be provided to applicants during examination: 1SA-3/B6 ALARM)

Learning Objective: EAP-SSF R10 RIO Question Source: NEW Question History: Last NRC Exam N/A Question Cognitive Level: Comprehension and Analysis

2010A NRC SENIOR REACTOR OPERATOR EXAM 1 POINT 1

Question 100 1 initial conditions:

Unit 1

Reactor power = = 100%

1 I RIA-59 reading 2 gpm slowly increasing

AP/31 (Primary to Secondary Leakage) in progress Current conditions:

Reactor power = 75% decreasing

1 1 RIA-59 reading 28 gpm increasing Based on the above conditions, which ONE of the following describes how the SRO will proceed AND the actions required if the steam generator approaches overfill conditions (285 XSUR) during the cooldown?

(285" A. Continue shutdown under the direction of AP/31 I/ Drain the SG to the hotwell B. Continue shutdown under the direction of AP/31 I/ Steam the SG to the condenser C. Go directly to SGTR tab I/ Drain the SG to the hotwell D. Go directly to SGTR tab I Steam the SG to the condenser

2010A NRC SENIOR REACTOR OPERATOR EXAM Question 100

/E-PIan -

Emerg Procs IE-Plan -

2.4.8 Knowledge of how abnormal operating procedures are used in conjunction with EOPs. (4.5)

KIA MATCH ANALYSIS Question requires knowledge of how AP/31 API3I is utilized in conjunction with EOP based on SGTR size.

SRO-ONLY SRO-ONL Y ANALYSIS Requires assessing plant conditions (approaching SG overfill) and prescribing a section of a procedure with which to proceed (section of EOP tab that directs steaming to prevent overfill).

ANSWER CHOICE ANALYSIS Answer: D A. Incorrect: First part is plausible since it is true until the SGTR reaches 25 gpm.

Since it is now 28 gpm, transfer to the EOP is required. Second part is plausible since it would be a method considered to reduce SG level if cooldown were occurring with normal plant procedures via AP/31.

B. Incorrect: First part is plausible since it is true until the SGTR reaches 25 gpm. Since it is now 28 gpm, transfer to the EOP is required. Second part is correct.

C. Incorrect: First part is correct. Second part is plausible since it would be a method considered to reduce SG level if cooldown were occurring with normal plant procedures via AP/31.

D. CORRECT: Transfer directly to SGTR tab of the EOP is directed once SGTR reaches 25 gpm. During the cooldown, if SG approaches overfill, SGTR tab directs steaming the affected SG to prevent overfill even if TS cooldown rates are violated.

Technical Reference(s): EOP-SGTR, API3I AP/31 Proposed references to be provided to applicants during examination: NONE Learning Objective: EAP-SGTR R26 EAP-APG R1, RI, R8 Question Source: NEW Question History: Last NRC Exam NIA N/A Question Cognitive Level: Knowledge and Fundamentals

ML101520521

Text

130°F and is actuated. 1SA-9/B-1 setpoint = = 138 gpm and is actuated. 1 SA-9/C1 setpoint

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