DCL-15-062, Expected Submittal Date for Licensee Event Report 2015-001-01

Expected Submittal Date for Licensee Event Report 2015-001-01

ML15127A634
Person / Time
Site:	Diablo Canyon
Issue date:	05/07/2015
From:	Welsch J Pacific Gas & Electric Co
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
DCL-15-062, LER 15-001-01
Download: ML15127A634 (1)

Text

Pacific Gas and Electric Company James M. Welsch Diablo Canyon Power Plant Site Vice President Mail Code 104/6 P. D. Box 56 May 7, 2015 Avila Beach, CA 93424 805.545.3242 Internal: 691.3242 PG&E Letter DCL-15-062 Fax: 805.545.4884 U.S. Nuclear Regulatory Commission 10 CFR 50.73 ATTN: Document Control Desk Washington, DC 20555~0001 Docket No. 50-275, OL-DPR-80 Diablo Canyon Power Plant, Unit 1 Expected Submittal Date for Licensee Event Report 2015-001-01

Reference:

Licensee Event Report 2015-001-00, "Both Trains of Residual Heat Removal Inoperable Due to Circumferential Crack on a Socket Weld,"

dated March 2, 2015 (ADAMS Accession No. ML15061A548)

Dear Commissioners and Staff:

In the above reference, Pacific Gas and Electric Company (PG&E) submitted a Licensee Event Report (LER) for Unit 1 regarding both trains of residual heat removal being inoperable as the result of seepage from a socket weld. In the referenced letter, PG&E indicated that it would provide an LER supplement by May 8, 2015, which would include the event cause and corrective action upon completion of the root cause evaluation.

PG&E is still performing detailed analysis necessary to complete the root cause evaluation. This analysis will require data to be gathered during the next Unit 1 refueling outage scheduled for October 2015. Based on the current plan for completion, PG&E will submit the LER supplement no later than January 28, 2016.

PG&E makes no new or revised regulatory commitments (as defined by NEI 99-04) in this letter.

AIl.M /C 1~ f-o Jc W f..L5C.t-f aph8/6470/50680117 cc: Marc L. Dapas, NRC Region IV Administrator Thomas R. Hipschman, NRC Senior Resident Inspector Siva P. Ling am, NRR Project Manager IN PO Diablo Distribution A member of the STARS (Strategic Teaming and Resource Sharing) Alliance Callaway

• Diablo Canyon

• Palo Verde

• Wolf Creek