LIC-05-0086, FCS - Init Exam - 07/2005- Post Exam Comments and Analysis

FCS - Init Exam - 07/2005- Post Exam Comments and Analysis

ML052130215
Person / Time
Site:	Fort Calhoun
Issue date:	07/15/2005
From:	Faulhaber H Omaha Public Power District
To:	Mckernon T NRC Region 4
References
LIC-05-0086, NUREG-1021
Download: ML052130215 (14)

Text

Omaha Public Power District 444 South 16th Street Mall Omaha NE 68102-2247 July 15,2005 LIC-05-0086 Mr. Tom McKernon, Chief Examiner U. S. Nuclear Regulatory Commission Region IV 61 1 Ryan Plaza Drive, Suite 1000 Arlington, TX 76001

Reference:

Docket No. 50-285

Subject:

Technical Review of the Reactor Operator (RO) and Senior Reactor Operator (SRO) Licensing Written Examinations The Omaha Public Power District (OPPD) has evaluated the RO and SRO licensing examinations that OPPD administered at Fort Calhoun Station on July 8,2005. In accordance with NUREG- 1021 (Operator Licensing Examination Standards for Power Reactors), OPPDs comments justifying changes made to the examination answer keys are attached. A review of all questions missed by 50% or more of the license candidates revealed no weaknesses that require changes to the licensed operator initial training program.

The following items were provided to you prior to the exit meeting:

The graded written examinations and clean copies 0 The master examinations and answer keys 0 Question asked by and answers given to the applicants during the written examinations 0 The written examination seating chart 0 A completed form ES-403-1 0 An analysis of the preliminary and final examination results 0 A copy of the examination security agreement with signatures obtained thus far (the original will be sent when we have obtained all of the required signatures)

Employment with Equal Opportunity 4171

US Nuclear Regulatory Commission LIC-05-0086 Page 2 If you should have any questions, please contact myself or Mr. Dave Weaver at 402-533-6056.

Sincerely, Division Manager Nuclear Engineering Attachment c: B. S. Mallett, NRC Regional Administrator, Region IV (w/o Enclosures)

A. B. Wang, NRC Project Manager (w/o Enclosures)

John H m a , NRC Senior Resident Inspector (w/o Enclosures)

Document Control Desk (w/o Enclosures)

Attachment Justification for changes made to the exam keys for the RO and SRO written exams conducted at Fort Calhoun Station on 7/8/05

Comment on NRC Written Exam Administered July 8,2005 at Fort Calhoun Station Question Number 002 The question concerns the steps for restoration of letdown, per EOP-AOP Attachment 23, when RCS pressure is 1650 psia and rising following a small break LOCA that resulted in PPLS actuation. Step 3 of Attachment 23 states, IF Engineered Safeguards has NOT been reset, THEN reset Engineered Safeguards PER the applicable EOP/AOP Floating Step. Answer A, Reset Engineered Safeguards relays, is correct as indicated on the answer key.

EOP-03, Floating Step H provides is applicable for resetting Engineered Safeguards. In this situation, the following steps of Floating Step H require manipulation of control devices in order to restore letdown:

Step 3.c. Block PPLS-A and PPLS-B.

Step 3.e. Reset BOTH of the following relays:

86APPLS 86BPPLS Step 3.f. Reset BOTH of the following relays:

86AlPPLS 86BlPPLS Step 7. Reset ALL of the following relays:

86A/CIAS 86BUCIAS 86B/CIAS 86AKIAS Other steps in Floating Step H are not applicable in this situation, do not require manipulation of control devices under the conditions established by the question, or are not directly necessary for the restoration of letdown. This means that answer B, Block PPLS, Reset PPLS and CIAS lockout relays, is also a correct answer.

Therefore, we request that two responses, A or B, be accepted as correct answers for question number 002.

CONFIDENTIAL NRC EXAM MATERIAL Do Not Discuss with anyone who has not signed Exam Security Agreement

. ~

QUESTION NUMBER: 002 A small break LOCA resulted in PPLS actuation. The break has been isolated by closing a PORV block valve and pressurizer level has returned to 60% and is continuing to rise. RCS pressure is at 1650 psia and rising. Containment pressure is 0.5 psig. What action should be taken to allow the letdown isolation valves, HCV-204 and TCV-202 to be opened in this situation per EOP-AOP Attachment 23,"Restoration of Letdown"?

A!, Reset Engineered Safeguards relays.

B. Block PPLS, Reset PPLS and ClAS lockout relays C. Place the ClAS override switches for the valves in override.

D. Place the Defeat switch for HCV-204 in the defeat position.

Question 2 WA ## 000009 EA2.08 Ability to determine or interpret the following as they apply to a small break L0CA:Letdown isolation valve position indication RO Importance 2.9* SRO Importance 2.9* 10 CFR 55 Section 43.5 / 45.13 FCS Lesson Plan / Objective 0711-02 01.02 EXPLAIN, the manual and automatic functions of control valves in the CVCS.

KA#: 000009 EA2.08 Bank Ref #:

LP# / Objective: 07 11-02 0 1.02 Exam Level: RO Cognitive Level: HIGH Source: NEW

Reference:

EOP-03 Handout: NONE

EOP/AOP ATTACHMENTS Page 110 of 150 Attachment 23 Restoration of Letdown INSTRUCTIONS CONTINGENCY ACTIONS I

CAUTION Restoring letdown can result in adverse radiological conditions in the Auxiliary Building.

1. Verifv letdown restoration criteria are 1.I IF letdown restoration criteria are satisfied: NOT satisfied, THEN letdown can NOT be restored.

0 HPSl Stop and Throttle criteria are satisfied 0 Letdown is needed or desired 0 No LOCA exists in the CVCS

2. IF a UHE is the only event in progress, THEN Letdown may be restored by performing the following steps:

a. Place HIC-101, Letdown Flow Controller, in MANUAL.

b. Close HIC-101.

(continue)

R18

EOP/AOP ATTACHMENTS Page 111 of 150 Attachment 23 Restoration of Letdown INSTRUCTIONS CONTINGENCY ACTIONS

2. (continued)

I I

c. Place PIC-210, Letdown Pressure Controller, in MANUAL.

d. Throttle PCV-210 to approximately 10% OPEN.

e- -

Place BOTH of the following CIAS override switches to override:

"HCV-204 ClAS OVERRIDE" "TCV-202 CIAS OVERRIDE"

f. GO TO Step 8.

3. IF Engineered Safeguards have NOT been reset, THEN reset Engineered Safeguards PER the applicable EOP/AOP Floating Step.

R18

EOP/AOP ATTACHMENTS Page 112 of 150 Attachment 23 Restoration of Letdown I NSTRUCTlONS CONTINGENCY ACTIONS

4. Place HIC-101, Letdown Flow Cbntroller, in MANUAL.

1

5. Clbse HIC-101.

6. Place PIC-210, Letdown Pressure Controller, in MANUAL.

7. Throttle PCV-210 to approximately 10%

OPEN.

8. ODen BOTH of the following Letdown Isolation Valves:

HCV-204 TCV-202

9. Initiate letdown using HIC-IO1 while adjusting PCV-210 to maintain letdown pressure approximately 300 psig.

IO. Balance charging and letdown to maintain desired pressurizer level.

End of Attachment 23 R18

EOP-03 Page 94 of 148 8.0 FLOATING STEPS H. RESET OF ENGINEERED SAFEGUARDS INSTRUCTIONS CONTINGENCY ACTIONS CAUTION Do not perform this floating step if CSAS relays are tripped to prevent damage to VIAS relays.

1. IF CPHS has actuated AND Containment pressure is less than or equal to 3.0 psig, THEN reset CPHS by performing the following steps:

NOTE Resetting CPHS Lockout Relays may reset SGIS. HCV-1105 and HCV-1106 may reopen.

a. Reset BOTH of the following relays:

0 86A/CPHS 0 86B/CPHS

b. Reset BOTH of the following relays:

0 86Al/CPHS 0 86Bl/CPHS R28

EOP-03 Page 95 of 148 8.0 FLOATING STEPS H. RESET OF ENGINEERED SAFEGUARDS INSTRUCTIONS CONTINGENCY ACTIONS

2. IFi PPLS has NOT actuated, I

THEN GO TO Step 4.

1

3. deset PPLS by performing the following steps:

a. IF RCS pressure is greater than 1700 psia, THEN GO TO Step 3.e.

b. Verify BOTH of the following RCS b.1 IF either RCS Temperature Temperature instruments are instrument is inoperable, operable: THEN disable the PORVs by closing BOTH PORV Block Valves:

1-113 0 T-123 HCV-150 HCV-151 c- -

Block PPLS-A and PPLS-B.

(continue)

EOP-03 Page 96 of 148 8.0 FLOATING STEPS H. RESET OF ENGINEERED SAFEGUARDS INSTRUCTIONS CONTINGENCY ACTIONS

3. (continued)

d. Verifv ALL of the PPLS Blocked d.1 IF any of the PPLS Blocked alarms alarms annunciate: do NOT annunciate, 0 "PPLS " A BLOCKED" THEN continue attempts to block (CB-1,2,3; A4) PPLS until all alarms annunciate.

0 "PPLS "B" BLOCKED" (CB-1,2,3; A4)

"PPLS-B BLOCKED" (AI-30B; A34-1)

"PPLS-A1 BLOCKED" (AI-308; A34-2)

"PPLS-B1 BLOCKED (AI-30A; A33-2) 0 'IPPLS-A BLOCKED" (AI-30A; A33-I)

e. Reset BOTH of the following relays:

0 86NPPLS 0 86B/PPLS

f. -Reset BOTH of the following relays:

0 86AUPPLS 0 86Bl/PPLS

EOP-03 Page 97 of 148 8.0 FLOATING STEPS H. RESET OF ENGINEERED SAFEGUARDS INSTRUCTIONS CONTINGENCY ACTIONS

4. Rlace ALL of the Containment Cooler dCW Valve Hand Controllers in "OPEN":

HCV-400C HCV-4O1C HCV-402C 0 HCV-403C

5. Place BOTH of the following EHC Pump control switches in "PULL-TO-LOCK:

EHC3A EHC3B

6. IF OPLS has actuated, THEN place ALL of the following Condenser Evacuation Pump control switches in "PULL-TO-LOCK:

FW-8A FW-8B FW-8C

EOP-03 Page 98 of 148 8.0 FLOATING STEPS H. RESET OF ENGINEERED SAFEGUARDS INSTRUCTIONS CONTINGENCY ACTIONS NOTE When SlAS relays are reset, ALL of the following equipment may reposition:

HCV-489A/B, 490A/B, 491AIB, and 492A/B, RW/CCW HX CCW valves - upon reset, valves will return to their pre-SIAS position LCV-218 if in AUTO or OPEN, valve will reopen CH-4AIB - will stop unless control switch has been red-flagged WD-2A/B - RCDT pumps may restart WD3AIB - Containment Sump Pumps may restart WD-27A/B, 40AIB, 41NB Aux Building Sump pumps may restart Pressurizer Backup Heater Bank 1, Group 2 and 3; Bank 2, Group 5; Bank 3, Group 9; and Bank 4, Group 11 and 12 will reenergize if previously in service and pressurizer level above the low level cutoff VD-7A - Vacuum priming pump will restart if selected WD-26A/B, Aux Bldg Sump Tank Pumps may restart

7. Reset ALL of the following relays:

0 86AISIAS 0 86MSIAS 0 86AICIAS 0 868 1BIAS 0 86B1X/S IAS 0 86B1/CIAS 0 86B/SIAS 0 86BWSIAS 0 86B/CIAS 0 86A1/SIAS 0 86A1X/SIAS 0 86A1/CIAS