ML13074A793

Operational Assessment for 100% Power Case Regarding Confirmatory Action Letter Response

ML13074A793
Person / Time
Site:	San Onofre
Issue date:	03/14/2013
From:	St.Onge R Southern California Edison Co
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
TAC ME9727
Download: ML13074A793 (2)

Text

J SOUTHERN CALIFORNIA Richard 1. St. Onge EDISON Director, Nuclear Regulatory Affairs and Emergency Planning An EDISON INTERNATIONAL Company 10 CFR 50.4 March 14, 2013 U.S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, DC 20555-0001

Subject:

Docket No. 50-361 Operational Assessment for 100% Power Case Regarding Confirmatory Action Letter Response (TAC No. ME 9727)

San Onofre Nuclear Generating Station, Unit 2

References:

1. Letter from Mr. Elmo E. Collins (USNRC) to Mr. Peter T. Dietrich (SCE), dated March 27, 2012, Confirmatory Action Letter 4-12-001, San Onofre Nuclear Generating Station, Units 2 and 3, Commitments to Address Steam Generator Tube Degradation

2. Letter from Mr. Peter T. Dietrich (SCE) to Mr. Elmo E. Collins (USNRC), dated October 3, 2012, Confirmatory Action Letter - Actions to Address Steam Generator Tube Degradation, San Onofre Nuclear Generating Station, Unit 2

3. Letter from Mr. James R. Hall (USNRC) to Mr. Peter T. Dietrich (SCE), dated December 26, 2012, Request for Additional Information Regarding Response to Confirmatory Action Letter, San Onofre Nuclear Generating Station, Unit 2

4. Letter from Richard J. St. Onge (SCE) to NRC Document Control Desk, dated February 25, 2013, Response to Request for Additional Information (RAI 32)

Regarding Confirmatory Action Letter Response, San Onofre Nuclear Generating Station, Unit 2

Dear Sir or Madam,

On March 27, 2012, the Nuclear Regulatory Commission (NRC) issued a Confirmatory Action Letter (CAL) (Reference 1) to Southern California Edison (SCE) describing actions that the NRC and SCE agreed would be completed to address issues identified in the steam generator tubes of San Onofre Nuclear Generating Station (SONGS).Units 2 and 3. In a letter to the NRC dated October 3, 2012 (Reference 2), SCE reported completion of the Unit 2 CAL actions and included a Return to Service Report (RTSR) that provided details of their completion.

By letter dated December 26, 2012 (Reference 3), the NRC issued Requests for Additional Information (RAIs) regarding the CAL response. SCE provided the response to RAI 32 in a letter dated February 25, 2013 (Reference 4). The response to RAI 32 included the following commitment:

P.O. Box 128 San Clemente, CA 92672

Document Control Desk March 14, 2013 SCE will provide an OA that includes an evaluation of steam generator TTW for operation up to the RTP. This OA will be provided to the NRC for review by March 15, 2013. In this OA, SCE will supplement the Intertek OA (Enclosure 2,, Appendix C of the CAL Response Letter) which is based on 'traditional' industry guidelines. The OA supplement will demonstrate that the Structural Integrity Performance Criteria (SIPC) and the Accident Induced Leakage Performance Criteria (AILPC) are satisfied for 100% Rated Thermal Power (RTP).

In accordance with the above commitment, Enclosure 2 of this letter provides Amendment I to the Intertek OA for the 100% power case.

There are no new regulatory commitments contained in this letter. If you have any questions or require additional information, please call me at (949) 368-6240.

Sincerely,

Enclosure:

As stated cc:

E. E. Collins, Regional Administrator, NRC Region IV J. R. Hall, NRC Project Manager, SONGS Units 2 and 3 G. G. Warnick, NRC Senior Resident Inspector, SONGS Units 2 and 3 R. E. Lantz, Branch Chief, Division of Reactor Projects, NRC Region IV