ML13051A190

Supplemental Document Submittal Regarding Confirmatory Action Letter Response to Address Steam Generator Tube Degradation

ML13051A190
Person / Time
Site:	San Onofre
Issue date:	02/18/2013
From:	St.Onge R Edison International Co, Southern California Edison Co
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
TAC ME9727
Download: ML13051A190 (2)

Text

SOUTHERN CALIFORNIA Richard 1. St. Onge E DI.SON Director, Nuclear Regulatory Affairs and

-I Emergency Planning An EDISON INTERNATIONAL Company Proprietary Information Withhold from Public Disclosure 10 CFR 50.4 February 18, 2013 U.S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, DC 20555-0001

Subject:

Docket No. 50-361 Supplemental Document Submittal 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

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.

The purpose of this letter is to submit three additional documents that were previously referenced in the October 3, 2012 submittal. Enclosures 1-3 of this submittal provide the proprietary version of these three documents as listed in the table below. Because the enclosures contain information that is proprietary, SCE requests this information be withheld from public disclosure in accordance with 10 CFR 2.390(a)(4). Enclosures 4 and 5 provide the non-proprietary version of MHI documents L5-04GA567, "Evaluation of Stability Ratio for Return to Service," and L5-04GA585, "Screening Analytical Evaluations for Operational Assessment."

Enclosure 6 provides the non-proprietary version of WEC document LTR-SGDA-1 2-36, "Flow-Induced Vibration and Tube Wear Analysis of the San Onofre Nuclear Generating Station Unit 2 Replacement Steam Generators Supporting Restart." Enclosures 7 and 8 provide the notarized affidavits for these documents which provide the basis on which the information in each document may be withheld from public disclosure by the NRC and address with specificity the considerations listed by paragraph 10 CFR 2.390(b)(4).

Proprietary Information (4 Withhold from Public Disclosure P.O. Box 128 Decontrolled Upon Removal From Enclosures 1-3 San Clemente, CA 92672 -fk

Document Control Desk February 18, 2013 Enclosure Document Title 1 L5-04GA567, Evaluation of Stability Ratio for Return to Service, Rev. 6 (Proprietary - P) 2 L5-04GA585, Analytical Evaluations for Operational Assessment, Rev 2. (P) 3 LTR-SGDA-12-36, Flow-Induced Vibration and Tube Wear Analysis of the San Onofre Nuclear Generating Station Unit 2 Replacement Steam Generators Supporting Restart, Rev. 3 (P) 4 L5-04GA567, Evaluation of Stability Ratio for Return to Service, Rev. 6 (Non-proprietary - NP) 5 L5-04GA585, Analytical Evaluations for Operational Assessment, Rev. 2 (NP) 6 LTR-SGDA-12-36, Flow-Induced Vibration and Tube Wear Analysis of the San Onofre Nuclear Generating Station Unit 2 Replacement Steam Generators Supporting Restart, Rev. 3 (NP) 7 Affidavit by MHI for Enclosures 1 and 2, L5-04GA567, Evaluation of Stability Ratio for Return to Service, and L5-04GA585, Analytical Evaluations for Operational Assessment 8 Affidavit by WEC for Enclosure 3, LTR-SGDA-12-36, Flow-Induced Vibration and Tube Wear Analysis of the San Onofre Nuclear Generating Station Unit 2 Replacement Steam Generators Supporting Restart 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,

Enclosures:

As described in the table above 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 Proprietary Information Withhold from Public Disclosure Decontrolled Upon Removal From Enclosures 1-3