ML18268A021

Regulatory Audit Plan in Support of Maximum Extended Load Line Limit Analysis Plus License Amendment Request

ML18268A021
Person / Time
Site:	Browns Ferry
Issue date:	09/27/2018
From:	Farideh Saba Plant Licensing Branch II
To:	James Shea Tennessee Valley Authority
Saba F DORL/LPL2-2 ,301-415-1447
References
EPID L-2018-LLA-0048
Download: ML18268A021 (7)

Text

UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. 20555-0001 Mr. Joseph W. Shea Vice President, Nuclear Regulatory Affairs and Support Services Tennessee Valley Authority 1101 Market Street, LP 4A Chattanooga, TN 37 402-2801 September 27, 2018

SUBJECT:

BROWNS FERRY NUCLEAR PLANT, UNITS 1, 2, AND 3-REGULATORY AUDIT PLAN IN SUPPORT OF MAXIMUM EXTENDED LOAD LINE LIMIT ANALYSIS PLUS LICENSE AMENDMENT REQUEST (EPID L-2018-LLA-0048)

Dear Mr. Shea:

By letter dated February 23, 2018, as supplemented by letters dated March 7, and July 23, 2018, Tennessee Valley Authority (the licensee) submitted a license amendment request (LAR) to Renewed Facility Operating License Nos. DPR-33, DPR-52, and DPR-68 for the Browns Ferry Nuclear Plant Units 1, 2, and 3 (Browns Ferry). The proposed amendments would allow operation of Browns Ferry in the expanded Maximum Extended Load Line Limit Analysis Plus (MELLLA+) operating domain.

To support its safety evaluations, the Nuclear Regulatory Commission staff has determined the need for a regulatory audit to be conducted in accordance with the Office of Nuclear Reactor Regulation Office Instruction LIC-111, "Regulatory Audits," for the staff to gain a better understanding of the licensee's approach, calculations, and other aspects of the LAR. The audit plan to support the review of this LAR is enclosed.

If you have any questions, please contact me at (301) 415-1447 or Farideh.Saba@nrc.gov.

Docket Nos. 50-259, 50-260, and 50-296

Enclosure:

Audit Plan for EPU LAR cc: Listserv Sincerely, r-~rt civh z;, 5:l~

Farideh E. Saba, Senior Project Manager Plant Licensing Branch 11-2 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation

BACKGROUND UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. 20555-0001 REGULATORY AUDIT PLAN TO SUPPORT REVIEW OF MAXIMUM EXTENDED LOAD LINE LIMIT ANALYSIS PLUS LICENSE AMENDMENT REQUEST TENNESSEE VALLEY AUTHORITY BROWNS FERRY NUCLEAR PLANT, UNITS 1, 2, AND 3 DOCKET NOS. 50-259, 50-260, AND 50-296 By letter dated February 23, 2018 (Agencywide Documents Access and Management System (ADAMS) Accession No. ML180796140), as supplemented by letters dated March 7 and July 23, 2018 (ADAMS Accession Nos. ML18067A495 and ML18205A498, respectively),

Tennessee Valley Authority (TVA, the licensee) submitted a license amendment request (LAR) for maximum extended load line limit analysis plus (MELLLA+) for Browns Ferry Nuclear Plant (Browns Ferry), Units 1, 2, and 3. The proposed LAR would allow operation for Browns Ferry in the expanded MELLLA+ domain.

The Nuclear Regulatory Commission (NRC) staff has determined that regulatory audits of the Browns Ferry LAR should be conducted in accordance with the Nuclear Reactor Regulation (NRR) 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.

Regulatory Audit Basis The audits will provide information necessary to complete the NRC staff's evaluation of the proposed LAR submitted by the licensee to allow for Browns Ferry operation in the MELLLA+

operating domain.

Regulatory Audit Scope The scope of this regulatory audits includes a detailed discussion of the LAR with particular focus on the following topics:

General Electric Hitachi (GEH) Applicability to ATRIUM 10XM Fuel Anticipate Transient Without Scram (ATWS)

Anticipated Transient Without Scram Instability (A TWSI)

Detect and Suppress Solution - Confirmation Density (DSS-CD)

Enclosure

Loss-of-Coolant Accident (LOCA)

Anticipated Operational Occurrences (AOOs)

Framatome Method Applicability in MELLLA+

Containment Analysis Human Performance Details related to the above focused topics will be transmitted to the TV A point of contact by e-mails prior to the audit.

Information Necessary for the Regulatory Audit The NRC staff requests the licensee to make the appropriate personnel or contractors who are familiar with the proposed MELLLA+ LAR available for the audits (either in-person or on the phone). The NRC staff also requests the licensee to have the supporting documents related to the above topics available and be prepared to discuss them with the staff during the audit. The documents could be provided by paper copies or electronically. However, for those documents that are provided electronically, the NRC audit team may ask for printed copies during the audit.

Additional information needs identified during the audit will be communicated to the TVA designated point of contact.

Team Assignments Josh Borromeo (audit lead), Reactor Systems Engineer, NRR Diana Woodyatt, Reactor Systems Engineer, NRR Mathew Panicker, Reactor Engineer, NRR Aaron Wysocki, Consultant / Contractor, Oak Ridge National Laboratory John Hughey, Human Factors Engineer, NRR Ahsan Sallman, Senior Reactor Systems Engineer, NRR Farideh Saba, Senior Project Manager, NRR Logistics The audit will be conducted with the licensee at the EXCEL Services Corporation facility in Rockville, Maryland, at Browns Ferry in Athens, Alabama, or at other locations as appropriate.

TVA should make relevant information available in an online information portal or hard copies, as appropriate, and provide rooms and space as necessary if site visits are needed. Meetings, site visits, and teleconferences will be held as necessary for clarification of information and determination of supplemental information to be docketed to support the NRC staff's review.

The first face-to-face audit will be conducted at the EXCEL Services Corporation facility in Rockville, Maryland, from October 9 to October 12, 2018. Entrance and exit briefings will be held at the beginning and the end of this audit, respectively. The licensee is requested to provide a room for the use by the audit team.

The audit will start at 8:30 a.m. on Tuesday, October 9, 2018, and conclude on Friday, October 12, 2018. The NRC staff tentative schedule 1 for this audit is as follows:

October 9 8:30 a.m.

9:00 a.m.

12:00 p.m.

1:00 p.m.

3:30 p.m.

4:00 p.m.

4:30 p.m.

October 10 8:30 a.m.

9:30 a.m.

12:00 p.m.

1:00 p.m.

3:30 p.m.

4:00 p.m.

4:30 p.m.

October 11 8:30 a.m.

12:00 p.m.

1:00 p.m.

2:15 p.m.

3:30 p.m.

4:00 p.m.

4:30 p.m.

October 12 8:30 a.m.

11 :00 a.m.

Deliverables Entrance Meeting - introductions, audit activities, goals, and logistics.

Licensee Discusses GEH Methods Applicability to ATRIUM 10XM Fuel and ATWSI Lunch NRC Team Discusses GEH Methods Applicability to ATRIUM 10XM Fuel and ATWSI and Calculation Note Review NRC Audit Team Caucus NRC / Licensee Interim Meeting Audit Team Daily Closeout Licensee Discusses DSS-CD Licensee Discusses A TWS Lunch NRC Team Discusses ATWS and DSS-CD and Calculation Note Review NRC Audit Team Caucus NRC / Licensee Interim Meeting Audit Team Daily Closeout Licensee Discusses LOCA, AOOs, and Framatome Methods Lunch NRC Team Discusses Containment Analysis NRC Team Discusses Human Performance NRC Audit Team Caucus NRC / Licensee Interim Meeting Audit Team Daily Closeout NRC follow-up on open items Audit Exit At the conclusion of this audit, the NRC staff will conduct an exit briefing and will discuss a summary of audit results in each subject area discussed during the audit. Additionally, the results of this audit will be utilized to focus the scope of any requests for additional information issued in the course of this review. An audit report/summary, which includes discussions about 1 This is a proposed schedule that is subject to change as a result of discussion between the NRC staff and Licensee/ Vendors. The finalized schedule may not reflect the proposed schedule herein.

all the audit related activities, will be issued to the licensee prior to completion of the NRC review of the LAR.

ML18268A021

• b email OFFICE NRR/DORL/LPL2-2/PM NRR/DORL/LPL2-2/LA NRR/DSS/SRXB/BC NAME FSaba BClayton JWhitman DATE 09/26/18 09/26/18 09/26/18 OFFICE NRR/DSS/SNPB/BC NRR/DORL/LPL2-2/BC{A)

NRR/DORL/LPL2-2/PM NAME Rlukes BVenkataraman FSaba DATE 09/26/18 09/27/18 09/27/18