ML23072A384

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Audit Plan to Support License Amendment Request to Add an Analytical Methodology to the Core Operating Limits Report for Full Spectrum Loss of Coolant Accident
ML23072A384
Person / Time
Site: Beaver Valley
Issue date: 03/15/2023
From: Sujata Goetz
Plant Licensing Branch 1
To: Blair B
Energy Harbor Nuclear Corp
Goetz S
References
EPID L-2022-LLA-0129
Download: ML23072A384 (6)


Text

March 15, 2023 Mr. Barry N. Blair Site Vice President Energy Harbor Nuclear Corp.

Beaver Valley Power Station Mail Stop P-BV-SSB P.O. Box 4, Route 168 Shippingport, PA 15077-0004

SUBJECT:

BEAVER VALLEY POWER STATION, UNITS 1 AND 2 - AUDIT PLAN TO SUPPORT LICENSE AMENDMENT REQUEST TO ADD AN ANALYTICAL METHODOLOGY TO THE CORE OPERATING LIMITS REPORT FOR FULL SPECTRUM LOSS OF COOLANT ACCIDENT (EPID NO. L-2022-LLA-0129)

Dear Mr. Blair:

By letter dated August 31, 2022, (Agencywide Documents Access and Management System (ADAMS) Accession No. ML22249A256), Energy Harbor Nuclear Corporation (the licensee),

requested an amendment to Facility Operating License Nos. DPR-66 and NPF-73 for the Beaver Valley Power Station, Units 1 and 2. The proposed amendment would add the Westinghouse Electric Company LLC (Westinghouse) Topical Report WCAP-16996-P-A, Rev. 1, Realistic LOCA [loss of coolant] Evaluation Methodology Applied to the Full Spectrum of Break Sizes (FULL SPECTRUM LOCA Methodology), to the list of approved analytical methods used to determine the core operating limits as listed in Technical Specification 5.6.3, Core Operating Limits Report (COLR).

The U.S. Nuclear Regulatory Commission (NRC) staff has reviewed the license amendment request (LAR) and determined that a regulatory audit would assist in the timely completion of the review. The NRC staff will conduct a regulatory audit to support its review in accordance with the enclosed audit plan. A regulatory audit is a planned activity that includes the examination and evaluation of primarily non-docketed information.

The audit will be conducted to increase the NRC staffs understanding of the LAR and identify information that will require docketing to support the NRC staffs regulatory findings. The audit will be conducted from March 27, 2023, to April 7, 2023, through an online portal established by the licensee.

B. Blair If you have any questions, please contact me by telephone at 301-415-8004 or email to Sujata.Goetz@nrc.gov.

Sincerely,

/RA/

Sujata Goetz, Project Manager Plant Licensing Branch I Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket Nos.: 50-334 and 50-412

Enclosure:

Audit Plan cc: Listserv

REGULATORY AUDIT PLAN TO SUPPORT REVIEW OF LICENSE AMENDMENT REQUEST TO ADD AN ANALYTICAL METHODOLOGY TO THE CORE OPERATING LIMITS REPORT FOR A FULL SPECTRUM LOSS OF COOLANT ACCIDENT BEAVER VALLEY POWER STATION, UNITS 1 AND 2 DOCKET NOS. 50-334 AND 50-412

1.0 BACKGROUND

By letter dated August 31, 2022, (Agencywide Documents Access and Management System (ADAMS) Accession No. ML22249A256), Energy Harbor Nuclear Corporation (the licensee),

requested an amendment to Facility Operating License Nos. DPR-66 and NPF-73 for the Beaver Valley Power Station (Beaver Valley), Units 1 and 2. The proposed amendment would add the Westinghouse Electric Company LLC (Westinghouse) Topical Report WCAP-16996-P-A, Rev.1, Realistic LOCA [loss of coolant] Evaluation Methodology Applied to the Full Spectrum of Break Sizes (full spectrum LOCA methodology), to the list of approved analytical methods used to determine the core operating limits as listed in Technical Specification 5.6.3, Core Operating Limits Report (COLR).

The U.S. Nuclear Regulatory Commission (NRC) 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 (ML082900195), for the NRC staff to examine the licensees non-docketed information with the intent to gain a better understanding of the license amendment request (LAR), to verify information, and to identify information that would require docketing to support the basis of the NRC staffs licensing decision.

2.0 REGULATORY AUDIT BASIS The NRC staff will perform the audit to support its evaluation of whether the licensees request meets the requirements of Title 10 of the Code of Federal Regulations (10 CFR), Section 50.90.

3.0 INFORMATION AND OTHER MATERIAL NECESSARY FOR THE REGULATORY AUDIT The NRC staff will review the licensees calculations related to its full spectrum LOCA (FSLOCA) methodology to determine if the licensee needs to submit any additional information contained in the analyses performed in support of the requested change to support or develop conclusions for the staffs safety evaluation.

Enclosure

The NRC staff requests the licensee to have the following information readily available and accessible for the staffs review via an online portal as discussed in section 6.0. Plant-specific calculations associated with the FSLOCA analysis used in support of this amendment request, specifically:

a. The large and small break LOCA scenarios that were analyzed, peak cladding temperature versus break area and maximum local oxidation calculations,
b. Plant-specific uncertainty analysis for Beaver Valley,
c. YDRAG and KCOS uncertainty parameters evaluation for determination of limiting break size, and
d. Plant-specific analysis of the most severe uncovery within Region I.

Based on the review of the documents provided, the NRC staff will determine whether it needs to request any additional documents to be made available on the portal or additional information needs to be submitted on docket for the staff to complete the review of the LAR.

4.0 TEAM ASSIGNMENTS The audit team will consist of the following NRC staff:

Fred Forsaty Nuclear Engineer Fred.Forsaty@nrc.gov Team Leader Ravinder Grover Safety and Plant Ravinder.Grover@nrc.gov System Engineer Sujata Goetz Project Manager Sujata.Goetz@nrc.gov 5.0 LOGISTICS The audit will be held from March 27 to March 31, 2023, via telephone and through an online portal established by the licensee. The online portal is discussed in section 6.0 of the audit plan.

The audit team will conduct a telephone conference with the licensee for the purposes of introducing the team, discussing the scope of the audit, and describing the information to be made available on the online portal. The audit team will also confirm with the licensee if the information made available on the online portal contains any sensitive or proprietary information. The audit team may request that representatives of the licensee answer any audit team questions during the audit related to information provided on the portal at a mutually agreeable day and time by telephone conference.

The NRC staff will not conduct formal entrance or exit meetings; however, the NRCs project manager will inform the licensee via routine communications when the staff no longer needs access to the portal information. The NRC staff does not foresee the need for an onsite visit or in-person discussions between the NRC and licensee staff at this time. However, if the need for a such a meeting is identified in the future, the audit plan will be revised, and the schedule for the audit will be adjusted accordingly. The NRC project manager will coordinate any changes to the audit schedule and location with the licensee.

6.0 ONLINE PORTAL The audit team will access the documents listed in section 3.0 above through an online portal established by the licensee that allows the audit team to access documents via the internet. The

following conditions associated with the online portal must be maintained throughout the duration that the audit team has access to the online portal:

The online portal must be password-protected, and separate passwords will be assigned to the NRC staff and contractors who are participating in the audit.

The online portal must be sufficiently secure to prevent the NRC staff and contractors from printing, saving, downloading, or collecting any information on the online portal.

Conditions of use of the online portal must be displayed on the login screen and will require acknowledgement by each user.

Username and password information should be provided directly to the NRC staff. The NRC project manager will provide the licensee the names and contact information of the NRC staff who will be participating in the audit (see section 4.0). All other communications should be coordinated through the NRC project manager.

7.0 DELIVERABLES An audit summary, which may be public, will be prepared within 60 days of the completion of the audit. If the NRC staff identifies information during the audit that is needed to support its regulatory decision, the NRC staff will issue requests for additional information to the licensee.

ML23072A384 *by email OFFICE NRR/DORL/LPL1/PM NRR/DORL/LPL1/LA NRR/DSS/SNSB/BC*

NAME SGoetz KZeleznock (KEntz for) DWoodyatt DATE 03/13/2023 03/14/2023 03/14/2023 OFFICE NRR/DORL/LPL1/BC NRR/DORL/LPL1/PM NAME HGonzalez SGoetz DATE 03/15/2023 03/15/2023