DCL-16-058, Initial Operator Licensing Examination: Post Exam Comments Analysis

Initial Operator Licensing Examination: Post Exam Comments Analysis

ML16145A323
Person / Time
Site:	Diablo Canyon
Issue date:	04/25/2016
From:	Werner E Pacific Gas & Electric Co
To:	Cowdrey C NRC Region 4
References
DCL-16-058
Download: ML16145A323 (30)

Text

Enclosure 3 Contains Personally Identifiable Information -Withhold Under 10 CFR 2.390 When separated Enclosure 3, this document is decontrolled.

Pacific Gas and Electric Company~

Erik M. Werner Diablo Canyon Power Plant Manager P.O. Box 56 Operations Training Avila Beach, CA 93424 805.545.6417 Internal: 691.6417 Fax: 805.545.4907 May 5, 2016 PG&E Letter DCL-16-058 Mr. Christian B. Cowdrey 10 CFR 55.40 U.S. Nuclear Regulatory Commission, Region IV 1600 East Lamar Boulevard Arlington, TX 76011-4511 Docket No. 50-275, OL-DPR-80 Docket No. 50-323, OL-DPR-82 Diablo Canyon Units 1 and 2 -Initial Operator Licensing Examination: Post-Examination Materials

Dear Mr. Cowdrey:

In accordance with the guidance provided in Revision 10 of NUREG 1021, "Operator Licensing Examination Standards for Power Reactors," ES-501, Section C.1.a, Pacific Gas and Electric Company (PG&E) has previously provided the following post-examination materials in electronic format:

• Graded Written Examinations

• Applicant's Answer Sheets

• Master Examination and Answer Key

• Questions & Answers Provided to Applicants

• Examination Seating Chart

• Examination Performance Analyses

• Notifications Generated During the Examination

• Revised Job Performance Measures (JPMs)

• Simulator Change Request- SCR 2016-046

• Examination Schedule In addition to the electronic examination materials, PG&E is submitting the following materials:

• Enclosure 1 - ES-403-1, "Written Examination Grading Quality Checklist"

• Enclosure 2- ES-403.D.1.b- Recommended Examination Changes

• Enclosure 3 - Completed Form ES-201-3, "Examination Security Agreement" A member of the STARS (Strategic Teaming and Resource Sharing) Alliance Callaway

• Diablo Canyon

• Palo Verde

• Wolf Creek Enclosure 3 Contains Personally Identifiable Information -Withhold Under 10 CFR 2.390 When separated Enclosure 3, this document is decontrolled.

Enclosure 3 Contains Personally Identifiable Information -Withhold Under 10 CFR 2.390 When separated Enclosure 3, this document is decontrolled.

Mr. Christian B. Cowdrey PG&E Letter DCL-16-058 May 5, 2016 Page 2 PG&E makes no new or revised regulatory commitments (as defined by NEI 99-04) in this letter.

If you have any questions, please contact Mr. John M. Becerra, Simulator and Exam Support Supervisor, at 805-545-4006.

Sincerely,

~J~

Erik M. Werner Operations Training Manager M EM6/4539/50817941-28 Enclosures (Post-Examination Materials) cc: John M. Becerra, Simulator and Examination Support Supervisor Edward D. Halpin, Senior Vice President, Generation & Chief Nuclear Officer Abdul Kadir, Operations Initial License Training Supervisor Dennis B. Petersen, Learning Services Director John Reynoso, NRC Acting Senior Resident Inspector Enclosure 3 Contains Personally Identifiable Information -Withhold Under 10 CFR 2.390 When separated Enclosure 3, this document is decontrolled.

High Miss Questions:

All L141 NRC Written exam questions have been reviewed by the Training staff with the candidates. The following question was missed by more than 50% of the candidates and remediated with the class.

Any additional actions are documented at the end of the question.

Question 14: Pass rate: 38.5% (5/13)

Examination Outline Cross-Reference Level RO Tier # 2 026 K4.06 - Knowledge of CSS design feature(s) and/or Group # 1 interlock(s) which provide for the following: Iodine scavenging K/A # 026 K4.06 via the CSS Rating 2.8 Question 14 A design basis LOCA occurs and Containment Spray actuates.

Which of the following completes the statements below:

1) If there is at least 60% level in the Sodium Hydroxide tank when containment spray actuates, post-LOCA, the minimum pH in Containment Sump will be .

2) For the Containment Spray Eductor valves, CS-8994A and B, to automatically open, an SI signal required.

A. 1) 8.0 2) is (2 selected)

B. 1) 9.5 2 ) is (4 selected)

C. 1) 8.0 2) is NOT D. 1) 9.5 2) is NOT (2 selected)

Proposed Answer: C. 1) 8.0 2) is NOT Explanation:

The NaOH tank is designed to deliver sufficient solution to establish a minimum pH in the Containment sump of 8.0 if at least 60% level is maintained. A full tank with NaOH of 32%

establishes an upper limit in the sump of 9.5. The basic pH helps the spray droplets entrain gaseous fission products, particularly iodine.

An SI signal is required to open the CS pump discharge valves and start the CS pumps. SI is NOT required to open the eductor valves, they open on high-high containment pressure.

A. Incorrect. pH is correct. SI is not required.

B Incorrect. pH is not correct (maximum) and SI is not required. (Both incorrect) C Correct. minimum pH is 8.0 and SI is NOT required.

D Incorrect. pH is incorrect (maximum). SI is NOT required (correct)

Technical

References:

LI-2, OIM page B-6-8 Learning Objective: Explain significant Containment Spray System design features and the importance to nuclear safety. (40802)

Question Source: New Question History: Last Two NRC Exams No Question Cognitive Level: Memory/Fundamental X 10CFR Part 55 Content: 55.41.7

Resolution: Adequately covered in the training material. Question is valid. Reviewed the bases and interlock with the class, no comments.

Additional actions: none

Question 29: Pass rate: 46.1% (6/13)

Examination Outline Cross-Reference Level RO 001 A3.02 Ability to monitor automatic operation of the CRDS, Tier # 2 including: Rod height Group # 2 K/A # 001 A3.02 Rating 3.7 Question 29 Unit 1 control rods are ARO at 230 steps.

A load rejection occurs and control rods begin to insert. When the rod motion stops, the following Control Bank D rod heights are displayed on DRPI:

Group step counters indicate as follows: Group 1 - 189 Group 2 - 190 What is the status of the Control Bank D rod alignment?

A. 1 rod is misaligned, 8 rods are in alignment B. 3 rods are misaligned, 6 rods are in alignment (2 selected)

C. 5 rods are misaligned, 4 rods are in alignment (3 & Labranche)

D. 6 rods are misaligned, 3 rods are in alignment (1 selected)

Proposed Answer: A. 1 rod is misaligned, 8 rods are in alignment Explanation:

Have to determine/know that each indicated position is in 6 step increments and a rod is misaligned if 12 steps from its respective bank step counter F2 is at 192 - 3 steps out B6 is at 204 steps - 14 steps out B10 is at 186 - 6 steps out F14 is at 180 steps -

10 steps out Resolution: Adequately covered in the training material. Question is valid. Reviewed the both the Tech Spec definition and the procedure requirement (STP I-1A, Routine Checks and OP AP-12B, Control Rod Misalignment) with the class, no comments.

Additional actions: none

Question 94: Pass rate: 42.8% (3/7)

Examination Outline Cross-Reference Level SRO Tier # 3 G2.1.37 - Knowledge of procedures, guidelines, or Group # 1 limitations associated with reactivity management. K/A # G2.1.37 Rating 4.6 Question 94 According to OP1.ID3, Reactivity Management, which of the following evolutions require a reactivity brief:

1. Transferring letdown filters

2. Starting or stopping a circulating water pump

3. Placing a cation bed back in service last used five days ago A. 1 and 2, only B. 1 and 3, only (1 selected)

C. 2 and 3, only (1 selected)

D. 1 and 2 and 3 (2 selected)

Proposed Answer:

A. 1 and 2 only Explanation:

A. Correct. placing a cation bed in service when last placed in service less than a week before does not require a reactivity brief. The other evolutions do.

B. Incorrect. If a cation bed has been out of service for less than a week, no brief is required C. Incorrect. Cation bed does not require a brief.

D. Incorrect. Cation bed does not require a brief.

NOTE: all answers are used 3 times, thinking any one is not done, will rule out 3 answers, but you have to know which one does not. Otherwise, all 3 require a brief would seem the logical answer.

Technical

References:

OP1.ID3, step 5.2.4 References to be provided to applicants during exam: none Learning Objective: 67250 -Describe reactivity management requirements and expectations Resolution: Adequately covered in the training material. Question is valid. Reviewed the section of OP1.ID3 with the class, no comments.

Additional actions: none