ML15181A477

Revision to Regulatory Commitment- Generator Circuit Breakers License Amendment Request, Commitment Withdrawal

ML15181A477
Person / Time
Site:	Diablo Canyon
Issue date:	06/30/2015
From:	Allen B S Pacific Gas & Electric Co
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
DCL-15-079
Download: ML15181A477 (2)

Text

Pacific Gas and Electric Company June 30, 2015 PG&E Letter U.S. Nuclear Regulatory Commission ATTN: Document Controi.Desk Washington, DC 20555-0001 Docket No. 50-275, OL-DPR-80 Docket No. 50-323, OL-DPR-82 Diablo Canyon Units 1 and 2 Barry S. Allen Vice President, Nuclear Services 10 CFR 50.4 Revision to Regulatory Commitment-Generator Circuit Breakers License Amendment Request. Commitment Withdrawal Diablo Canyon Power Plant Mail Code 104/6 P. 0. Box 56 Avila Beach, CA 93424 805. 5.45. 4888 Internal:

691.4888 Fax: 805.545.6445

Reference:

1. PG&E Letter DCL-13-025, "Withdrawal of License Amendment Request 09-07, 'Delayed Access Offsite Power Circuit Conformance with 1971 GDC-17,"'

dated March 14, 2013 2. PG&E Letter DCL-13-120, "Revision to Regulatory Commitment Generator Circuit Breakers License Amendment Request Submittal Date," dated December 18, 2013 3. PG&E Letter DCL-14-067, "Revision to Regulatory Generator Circuit Breakers License Amendment Request Submittal Date," dated July 28, 2014

• 4. Public Meeting with the NRC, "Diablo Canyon Power Plant Generator Circuit Breaker Project," December 11, 2014 5. NRC Letter, "DIABLO CANYON POWER PLANT-NRC INTEGRATED INSPECTION REPORT 050000275/2009003 and 050000323/2009003," dated August 5, 2009 Dear Commissioners and Staff: In Reference 1, Pacific Gas and Electric Company (PG&E) withdrew License Amendment Request (LAR) 09-07, and provided a regulatory commitment to submit a new LARin order to address a NRC violation (Reference 5). In Reference 2, 3, and 4, PG&E provided updates on the project status, identified its intent to pursue a change to install generator circuit breakers, and provided revisions to the LAR submittal commitment date. A member of the STARS (Strategic Teaming and Resource Sharing) Alliance Callaway

• Diablo Canyon

• Palo Verde

• Wolf Creek Document Control Desk June 30, 2015 Page 2 PG&E Letter DCL-15-079 Subsequently, PG&E determined that changes necessary to fully address the violation by establishing compliance with General Design Criteria (GDC)-17 for the 500 kV offsite power system could be implemented independently from the generator circuit breaker LAR. The issues raised by the violation have accordingly been resolved, and the LAR is not required to establish compliance.

Therefore, PG&E is withdrawing the voluntary regulatory commitment (as defined in NEI 99-04) discussed in References 1 through 4. PG&E intends to continue the process of preparing a design change to install generator circuit breakers as an enhancement to the facility, and will do so via routine coordination with the NRC Project Manager for Diablo Canyon Power Plant. If you have any questions, or require additional information, please contact Mr. Hossein Hamzehee at (805) 545-4720.

Sincerely, Barry S. Al" n Vice President Nuclear Services mjrm/4557/50429495 cc: Marc L. Dapas, NRC Region IV Administrator Siva P. Lingam, NRR Project Manager Thomas R. Hipschman, NRC, Senior Resident Inspector Gonzalo L. Perez, Branch Chief, California Department of Public Health Diablo Distribution A member of the STARS (Strategic Teaming and Resource Sharing) Alliance Callaway

• Diablo Canyon

• Palo Verde

• Wolf Creek