RS-07-041, Supplement to Application for Technical Specification Change TSTF-423, Risk Informed Modification to Selected Required Action End States for BWR Plants, Using the Consolidated Line Item Improvement Process

Supplement to Application for Technical Specification Change TSTF-423, Risk Informed Modification to Selected Required Action End States for BWR Plants, Using the Consolidated Line Item Improvement Process

ML070860068
Person / Time
Site:	LaSalle
Issue date:	03/26/2007
From:	Benyak D Exelon Generation Co, Exelon Nuclear
To:	Document Control Desk, NRC/NRR/ADRO
References
NEDC-32988-A, RS-07-041, TSTF-423, TSTF-IG-05-02, Rev 1
Download: ML070860068 (3)

Text

Exeltbns.

Nuclear Fxelon Generation wwwexeloncorp.com 4300 Winfield Road Warrer, i1le, 1L 60 1,55 RS-07-041 10 CFR 50.90 March 26, 2007 U . S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, D . C . 20555 LaSalle County Station, Units 1 and 2 Facility Operating License Nos. NPF-11 and NPF-18 NRC Docket Nos. 50-373 and 50-374

Subject:

Supplement to Application for Technical Specification Change TSTF-423, Risk Informed Modification to Selected Required Action End States for BWR Plants, Using the Consolidated Line Item Improvement Process

References:

1. Letter from K. R . Jury (Exelon Generation Company, LLC) to U . S.

NRC, "Application for Technical Specification Change TSTF-423, Risk Informed Modification to Selected Required Action End States for BWR Plants, Using the Consolidated Line Item Improvement Process," dated October 18, 2006

2. TSTF-423, Revision 0, "Technical Specifications End States, NEDC-32988-A"

3. TSTF-IG-05-02, Revision 1, "Implementation Guidance for TSTF-423, Revision 0, 'Technical Specifications End States, NEDC-32988-A'," dated March 2007 In Reference 1 Exelon Generation Company, LLC (EGC) requested a change to the Technical Specifications (TS) of Facility Operating License Nos. NPF-11 and NPF-18 for LaSalle County Station (LSCS), Units 1 and 2. The proposed amendment would modify TS to risk-informed requirements regarding selected Required Action End States as provided in Reference 2 .

In support of the proposed change to the LSCS TS, EGC made a regulatory commitment to follow the industry implementation guidance associated Technical Specification Task Force (TSTF) 423, "Technical Specification End States, NEDC-32988-A," Revision 0 (i.e ., Reference 2). Specifically, the commitment was to follow the guidance established in TSTF-IG-05-02, "Implementation Guidance for TSTF-423, Revision 0, `Technical Specification End States, NEDC-32988-A'," Revision 0, and is documented in Attachment 4 to Reference 1 .

March 26, 2007 U . S. Nuclear Regulatory Commission Page 2 EGC has subsequently learned that the industry has revised the implementation guidance to resolve an NRC concern related to consistency between the TSTF-423 model safety evaluation and the implementation guide . As a result, EGC has determined that this particular commitment will be revised to follow the guidance established in Revision 1 of the implementation guidance document (i .e., Reference 3).

The revised list of regulatory commitments originally submitted in Reference 1 is provided in the attachment to this letter .

EGC has reviewed the information supporting a finding of no significant hazards consideration that was previously provided to the NRC in Reference 1 . The revised commitment provided in this submittal does not affect the bases for concluding that the proposed license amendment does not involve a significant hazards consideration .

If you have any questions concerning this letter, please contact Ms. Alison Mackellar at (630) 657-2817 .

I declare under penalty of perjury that the foregoing is true and correct. Executed on the 26th day of March 2007 .

Respectfully, Darin M. Benyak Manager - Licensing Exelon Generation Company, LLC

Attachment:

List of Regulatory Commitments

ATTACHMENT List of Regulatory Commitments The following table identifies those actions committed to by Exelon Generation Company, LLC (EGC) in this document. Any other statements in the submittal are provided for information purposes and are not considered to be regulatory commitments.

ONE-TIME PROGRAMMATIC DATE ACTION (Yes/No)

Yes/No EGC will follow the guidance established in Section 11 of NUMARC 93-01, "Industry Guidance for Monitoring the Effectiveness of Ongoing No Yes Maintenance at Nuclear Power Plants,"

Nuclear Management and Resource Council, Revision 3, July 2000 EGC will follow the guidance established in TSTF-IG-05-02, "Implementation Guidance for Implement TSTF-423, Revision 0, `Technical with No Yes Specifications End States, amendment NEDC-32988-A'," Revision 1, March 2007