DCL-13-034, Licensee Event Report 12-005-00 for Diablo Canyon Regarding Expected Submittal Date

Licensee Event Report 12-005-00 for Diablo Canyon Regarding Expected Submittal Date

ML13092A192
Person / Time
Site:	Diablo Canyon
Issue date:	04/01/2013
From:	Allen B Pacific Gas & Electric Co
To:	Office of Nuclear Reactor Regulation, Document Control Desk
References
DCL-13-034 LER 12-005-00
Download: ML13092A192 (2)

Text

Pacific Gas and Electric Company Barry S. Allen Diablo Canyon Power Plant Site Vice President Mail Code 104/6 P. O. Box 56 Avila Beach, CA 93424 805.545.4888 April 1, 2013 Internal: 691.4888 Fax: 805.545.6445 PG&E Letter DCL-13-034 U.S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, DC 20555-0001 Docket No. 50-275, OL-DPR-80 Docket No. 50-323, OL-DPR-82 Expected Submittal Date for Licensee Event Report 1-2012-005 Supplement

Reference:

PG&E Letter DCL-12-082, "Licensee Event Report 1-2012-005-00, Unanalyzed Condition due to Nonconservative Change in Atmospheric Dispersion Factor," dated August 31,2012.

Dear Commissioners and Staff:

In the above reference, Pacific Gas and Electric (PG&E) Compa'ny submitted a Licensee Event Report (LER) to the U.S. Nuclear Regulatory Commission (NRC) related to an unanalyzed condition involving a nonconservative change in atmospheric dispersion factor. In this LER, PG&E indicated that it would provide a supplemental report to explain the safety consequences of this event by April 1, 2013, following the completion of a safety consequences assessment.

Additionally, Reference 1 mentioned that PG&E would withdraw Event Notification 48246, identified on August 28, 2012, or submit a separate LER to the NRC for the issue based on the outcome of the investigation.

PG&E has not yet finished its safety consequences assessment. Based on the current plan for completion, PG&E will submit the LER supplement by June 3,2013.

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

Sincerely,

~21 ~ 1ltt--

A member of the STARS (Strategic Teaming and Resource Sharing) Alliance Callaway. Comanche Peak. Diablo Canyon. Palo Verde. San Onofre. South Texas Project. WolfCreek

U.S. Nuclear Regulatory Commission PG&E Letter DCL-13-034 April 1, 2013 Page 2 J8L3/S0497328 cc: Thomas R. Hipschman, NRC Senior Resident Inspector Arthur T. Howell, III, NRC Region IV James T. Polickoski, NRR Project Manager INPO Diablo Distribution A member of the STARS (Strategic Teaming and Resource Sharing) Alliance Callaway. Comanche Peak. Diablo Canyon. Palo Verde. San Onofre. South Texas Project. WolfCreek