ML15281A293
| ML15281A293 | |
| Person / Time | |
|---|---|
| Site: | Oconee, Mcguire, Catawba, McGuire  |
| Issue date: | 10/22/2015 |
| From: | Geoffrey Miller Plant Licensing Branch II |
| To: | Repko R Duke Energy Carolinas |
| Miller G, NRR/DORL, 415-2481 | |
| References | |
| TAC MF6480, TAC MF6481, TAC MF6482, TAC MF6483, TAC MF6484, TAC MF6485, TAC MF6486 | |
| Download: ML15281A293 (8) | |
Text
UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. 20555-0001 October 22, 2015 Mr. Regis T. Repko Senior Vice President Governance, Projects and Engineering Duke Energy Carolinas, LLC P.O. Box 1006/EC07H Charlotte, NC 28201-1006
SUBJECT:
CATAWBA NUCLEAR STATION, UNITS 1 AND 2 (CATAWBA 1 AND 2),
MCGUIRE NUCLEAR STATION, UNITS 1 AND 2 (MCGUIRE 1 AND 2), AND OCONEE NUCLEAR STATION, UNITS 1, 2, AND 3 (OCONEE 1, 2, AND 3) -
PLAN FOR THE REGULATORY AUDIT REGARDING LICENSE AMENDMENT REQUEST FOR ALTERNATE FISSION GAS GAP RELEASE FRACTIONS (TAC NOS. MF6480, MF6481, MF6482, MF6483, MF6484, MF6485, AND MF6486)
Dear Mr. Repko:
By letter dated July 15, 2015 (Agencywide Documents Access and Management System Accession No. ML15196A093), Duke Energy Carolinas, LLC, license amendment requires to use a new set of fission gas gap release fractions for high burn up fuel rods that exceed the
- lipear heat generation rate limit detailed in Regulatory Guide 1.183, Table 3, Footnote 11.
The Nuclear Regulatory Commission (NRC) staff has determined that a regulatory audit of the McGuire license amendment request (LAR) should be conducted in accordance with the Office of Nuclear Reactor Regulation Office Instruction LIC-111, "Regulatory Audits," for the NRC staff to gain a better understanding of the licensee's calculations and other aspects of the LAR.
A regulatory audit is a planned, license or regulation-related activity that includes the examination and evaluation of primarily non-docketed information. A regulatory audit is conducted with the intent to gain understanding, to verify information, and/or to identify information that will require docketing to support the basis of the licensing or regulatory decision. Performing a regulatory audit of the licensee's information is expected to assist the NRC staff in efficiently conducting its review or gain insights on the licensee's processes or procedures. Information that the NRC staff relies upon to make the safety determination must be submitted on the docket. However, there may be supporting information retained as records under Title 10 of the Code of Federal Regulations (10 CFR), Section 50.71 maintenance of records, making of reports and/or 10 CFR 54.37 additional records and record-keeping requirements that, although not required to be submitted as part of the licensing action, would help the NRC staff better understand the licensee's submitted information.
If you have any questions, please contact me by telephone at 301-415-2481 or by e-mail at Ed.miller@nrc.gov.
Sincerely, J j
~b<.1 If tl"'\\.
ard Miller, Project Manager Plant Licensing Branch 11-1 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket Nos. 50-413, 50-414, 50-369, 50-3.70, 50-269, 50-270 and 50-287
Enclosure:
Audit Plan cc w/encl: Distribution via Listserv
Audit Plan License Amendment Request Fission Gas Gap Release Fractions For High Burnup Fuel Rods That Exceed the Linear Heat Generation Rate Limit Detailed in-Regulatory Guide 1.183, Table 3, Footnote 11 Audit Date: October 26.~ 28, 2015 Office of Nuclear Reactor Regulation U.S. Nuclear Regulatory Commission Enclosure.
Audit Plan Catawba Nuclear Station, Units 1 and 2 McGuire Nuclear Station, Units 1 and 2 Oconee Nuclear Station, Units 1, 2, and 3
- 1.
Background
By letter dated July* 15, 2015 (Agencywide Documents Access and Management System Accession No. ML15196A093), Duke Energy Carolinas, LLC (Duke), submitted a license amendment request (LAR) to use a new set of fission gas gap release fractions for high burnup fuel rods that exceed the linear heat generation rate limit detailed in Regulatory Guide 1.183, Table 3, Footnote 11.
The U.S. Nuclear Regulatory Commission (NRG) staff has determined that a regulatory audit of the McGuire LAR should be*conducted in accordance with the Office of Nuclear Reactor Regulation Office Instruction LIC-111, "Regulatory Audits," for th.e NRG staff to gain a better understanding of the licensee's calculations and other aspects of the LAR.
- 2.
Regulatory Audit Bases The basis of this audit is Duke's LAR and NUREG-0800 Standard Review Plan Section 15.0.1, "Radiological Consequence Analyses Using Alternative Source Terms."
- 3.
Regulatory Audit Scope The scope of this regulatory audit will include supporting calculation documents used in the application.
- 4.
Information Needs The licensee is requested to have the following documentation available on site for the audit team. The documentation could be provided electronically or by paper copies. If provided electronically, the licensee is requested to have at least two computers available for the audit team, with a printer attached.
- 1. PAD and COPERNIC output files
- 2. "gapfrac" worksheet
- 3. Calculations comparing the various gap fraction calculations between ANS5.4 (2011 ), ANS5.4 (1982) (low and high temperature)
- 4. Analytical Techniques used in determining bounding fractions Additional information needs identified during the audit will be communicated to the designated point of contact.
The NRC staff also requests the licensee to make personnel who are familiar with the LAR (including site staff and contractors, if appropriate) accessible upon request (E?it~er in person or by phone). The personnel should be able to respond to NRC staff questions.
- 5.
Team Assignments Audit Team Lead Paul Clifford (NRC)
Technical Reviewer Matthew Hardgrove (NRC)
Technical Reviewer William MacFee (NRC)
Technical Reviewer Josh Whitman (NRC)
- 6.
logistics The audit will be conducted at Duke Headquarters in Charlotte, NC, October 26 - 28, 2015.
Entrance and exit briefings will be held at the beginning and end of this audit, respectively. The licensee is requested to provide a room for the use by the audit team. A more detailed, proposed, audit schedule is attached.
- 7.
Deliverables An audit reporVsummary will be issued to the licensee within approximately 90 days from the end of the audit. Additionally, the results of the audit will be utilized to focus the scope of any requests for additional information issued in the course of this review.
Attachment:
Proposed Duke Audit Schedule
October 26. 2015 9:30 a.m.
10:00 a.m.
11:00 a.m.
- 1:00 p.m.
3:30 p.m.
4:00 p.m.
4:30 p.m.
October 27, 2015 8:00 a.m.
3:30 p.m.
4:00 p.m.
4:30 p.m.
Proposed Duke Audit Schedule October 26 - 28, 2015 Check-in at site - meet licensee contact(s), setup for entrance meeting.
Entrance Meeting - introductions, audit activities and goals, and audit logistics.
Discussion with the licensee on methodology, calculations, assumptions NRC Team Breakout-staff review of procedures, basis documents and reports related to licensees proposed new set of fission gas gap release fractions for high burnup fuel rods that exceed the linear heat generation rate limit detailed in Regulatory Guide 1.183, Table 3,
- Footnote 11.
Audit Team Caucus NRC I Licensee Interim Meeting Audit Team Daily Closeout NRC Team Breakout/ Discussion with the licensee on methodology
- staff review of procedures, basis documents and reports related to licensees proposed new set of fission gas gap release fractions for high.
burnup fuel rods that exceed the linear heat generation rate limit detailed in Regulatory Guide 1.183, Table 3, Footnote 11.
Audit Team Caucus NRC I Licensee Interim Meeting Audit Team Daily Closeout Attachment
October 28, 2015 8:00 a.m.
3:30 p.m.
4:00 p.m.
5:00 p.m. NRC Team Breakout I Discussion with the licensee on methodology
- staff review of procedures, basis documents and reports related to licensees proposed new set of fission gas gap release fractions for high burnup fuel rods that exceed the linear heat generation rate limit detailed in Regulatory Guide 1.183, Table 3, Footnote 11.
Audit Team Caucus
- NRC I Licensee Interim Meeting NRC I Licensee Exit Meeting
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ML15281A293 OFFICE DORL/LPLll-1/PM DORL/LP LI 1-1 /LA NAME GEMiller SFigueroa DATE 10/21/15 10/10/15