DCL-13-025, Withdrawal of License Amendment Request 09-07, Delayed Access Offsite Power Circuit Conformance with GDC 17

Withdrawal of License Amendment Request 09-07, Delayed Access Offsite Power Circuit Conformance with GDC 17

ML13074A092
Person / Time
Site:	Diablo Canyon
Issue date:	03/14/2013
From:	Allen B Pacific Gas & Electric Co
To:	Office of Nuclear Reactor Regulation, Document Control Desk
References
DCL-13-025
Download: ML13074A092 (2)

Text

Pacific Gas and Electric Company Barr y S. Allen Diablo Canyon Power Plant Site Vice President Mail Code 104/6 P. O. Box 56 Avila Beach, CA 93424 805.545.4888 Internal: 691 .4888 Fax: 805 . 545 . 6445 March 14,2013 PG&E Letter DCL-13-025 u.s. Nuclear Regulatory Commission 10 CFR 50.90 ATTN: Document Control 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 Withdrawal of License Amendment Request 09-07! "Delayed Access Offsite Povv'er Circuit Conformance with GDC 17"

References:

1. PG&E Letter DCL-09-093, "License Amendment Request 09-07, Delayed Access Offsite Power Circuit Conformance with GDC 17,"

dated December 29, 2009.

2. PG&E Letter DCL-11-121, "Response to NRC Request for Additional Information Regarding License Amendment Request 09-07, 'Delayed Access Offsite Power Circuit Conformance with 1971 GDC-17,'" dated November 22,2011.

3. NRC Integrated Inspection Report 05000275/2009003 and 05000323/2009003, dated August 5, 2009.

Dear Commissioners and Staff:

In Reference 1, Pacific Gas and Electric Company (PG&E) submitted License Amendment Request (LAR) 09-07 to revise the licensing basis as described in the Updated Final Safety Analysis Report (UFSAR) regarding the conformance of the delayed access offsite power circuit (the 500 kilovolt (kV) delayed access circuit) to 1971 General Design Criterion 17. The change was proposed in response to a non-cited violation discussed in Reference 3.

On November 22, 2011, PG&E responded (Reference 2) to a NRC Staff request for additional information received via e-mail.

On January 24, 2013, PG&E met with the NRC to discuss modifications that PG&E is considering to the offsite power supplies for Diablo Canyon Power Plant (DCPP) and the status of a December 29, 2009, LAR related to offsite power. PG&E A member of th e S TA RS (Str ateg i c Teamin g a nd R eso ur ce Sh a rin g ) A ll ia n ce Callaway

• Comanche Peak

• Diablo Canyon

• Palo Verde. San Onofre

• South Texas P roject

• Wolf Creek

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Document Control Desk March 14, 2013

& Page 2 PG&E Letter DCL-13-025 discussed plans to, within 60 days of the meeting, withdraw the current LAR and resubmit a new LAR by the end of 2013.

PG&E is making the following regulatory commitment (as defined by NEI 99 04) in this letter:

PG&E will submit a new LAR, which will include one of two options: 1) provide additional justification for the delayed 500 kV circuit, or 2) provide a design change to the 500 kV circuit that would include the addition of main generator output breakers that would make the 500 kV circuit an immediate source of offsite power.

This LAR will be submitted by December 31,2013.

If you have any questions, or require additional information, please contact Tom Baldwin at (805) 545-4720.

Sincerely, Jt, 5. AtL-Barrys1 en Site Vice President dngd/4955 cc: Diablo Distribution Gonzalo L. Perez, Branch Chief, California Dept of Public Health Elmo E. Collins, NRC Region IV Thomas R. Hipschman, NRC, Senior Resident Inspector James T. Polickoski, NRR Project Manager A member of the STARS (Strategic Teaming and Resource Sharing) Alliance Callaway

• Comanche Peak

• Diablo Canyon

• Palo Verde. San Onofre

• South Texas Project

• Wolf Creek