ML073040543

Distribution of Revision 2 of the Nrc'S Significance Determination Process Risk-Informed Inspection Notebooks, & Accompanying Phase 2 Pre-Solved Tables

ML073040543
Person / Time
Site:	Limerick
Issue date:	10/29/2007
From:	Peter Bamford NRC/NRR/ADRO/DORL/LPLI-2
To:	Crane C Exelon Generation Co
Bamford, Peter J., NRR/DORL 415-2833
Shared Package
ML072490372	List: ML073040543
References
TAC MD6415
Download: ML073040543 (4)

Text

OFFICIAL USE ONLY SECURITY RELA.TED IHFORM.ATIOh

4. UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. 20555-0001 October 29, 2007 Mr. Christopher M. Crane President and Chief Nuclear Officer Exelon Generating Company, LLC 200 Exelon Way, KSA 3-N Kennett Square, PA 19348

SUBJECT:

LIMERICK GENERATING STATION, UNIT NOS. 1 AND 2 -DISTRIBUTION OF REVISION 2 OF THE NRC'S SIGNIFICANCE DETERMINATION PROCESS RISK-INFORMED INSPECTION NOTEBOOKS, AND ACCOMPANYING PHASE 2 PRE-SOLVED TABLES (TAC NO. MD6415).

Dear Mr. Crane:

In 2004, the U.S. Nuclear Regulatory Commission (NRC) requested information from licensees to support the Significance Determination Process (SDP) Risk-Informed Inspection Notebook (notebook) enhancement/standardization effort. The NRC has completed this effort and has issued Revision 2 of the notebook for Limerick Generating Station (LGS), Unit Nos. I and 2.The NRC developed these notebooks to facilitate Phase 2 of the NRC inspection finding significance determination process detailed in Inspection Manual Chapter 0609, "Significance Determination Process," Appendix A, "Determining the Significance of Reactor Inspection Findings for At-Power Situations." SECY-99-007A, "Recommendations for Reactor Oversight Process Improvements," sets forth this process and additional details are included in the NRC Inspection Manual Chapter 0308, "Reactor Oversight Process Basis Document." NRC inspectors and risk analysts, who have extensive understanding of plant-specific design features and operation, are expected to use these notebooks.

The notebooks will be updated on a case-by-case basis as needed to reflect changes to the facilities.

....Revision 2 of the notebooks is accompanied' by the Site Specific Pre-Solved Spreadsheet (the Spreadsheet).

The NRC added the Spreadsheet to help reduce the time it takes to process inspection findings.

The NRC benchmarked the notebooks against licensee Probability Risk Assessments and plant configurations.

The enclosed compact disk containing the above documents is provided for your use to facilitate your understanding of the SDP in Inspection Manual Chapter 0609.The enclosure transmitted herewith contains Security-Related information.

When separated from enclosure, this document is decontrolled.

eFrCAL US." OhNL' -SECURI'Y RELATED INFORMATION Ofrle!lzl iSleN-- -l1 RE12ATEDr INlFODRMATIONl C. Crane The information on the enclosed compact disk is designated exempt from public disclosure pursuant to Section 2.390(d)(1 ) of Title 10 of the Code of Federal Regulations since it contains security-related information.

If you have any questions, please contact me at (301) 415-2833.Sincerely, Peter J. Bamford, Project Manager Plant Licensing Branch 1-2 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket Nos. 50-352, 50-353

Enclosure:

Compact Disk with LGS Unit Nos. 1 and 2 SDP Revision 2 and Site Specific Pre-Solved Spreadsheet Official Use Only-Security Related Information cc w/o encl: See next page OFFICIAL USE ONLY SECURITY RELATED INFORMNATION Limerick Generating Station, Unit Nos. 1 and 2 cc (w/o encl): Site Vice President Limerick Generating Station Exelon Generation Company, LLC P.O. Box 2300 Sanatoga, PA 19464 Plant Manager Limerick Generating Station Exelon Generation Company, LLC P.O. Box 2300 Sanatoga, PA 19464 Regulatory Assurance Manager -Limerick Exelon Generation Company, LLC P.O. Box 2300 Sanatoga, PA 19464 Vice President

-Operations, Mid-Atlantic Exelon Generation Company, LLC 200 Exelon Way, KSA 3-N Kennett Square, PA 19348 Vice President Licensing and Regulatory Affairs Exelon Generation Company, LLC 4300 Winfield Road Warrenville, IL 60555 Director Licensing and Regulatory Affairs Exelon Generation Company, LLC 200 Exelon Way, KSA 3-E Kennett Square, PA 19348 Manager Licensing Limerick Generating Station Exelon Generation Company, LLC 200 Exelon Way, KSA 3-E Kennett Square, PA 19348 Correspondence Control Desk Exelon Generation Company, LLC P.O. Box 160 Kennett Square, PA 19348 Regional Administrator, Region I U.S. Nuclear Regulatory Commission 475 Allendale Road King of Prussia, PA 19406 Senior Resident Inspector U.S. Nuclear Regulatory Commission Limerick Generating Station P.O. Box 596 Pottstown, PA 19464 Library U.S. Nuclear Regulatory Commission Region I 475 Allendale Road King of Prussia, PA 19406 Director, Bureau of Radiation Protection Pennsylvania Dept. of Environmental Protection Rachel Carson State Office Building P.O. Box 8469 Harrisburg, PA 17105-8469 Chairman Board of Supervisors of Limerick Township 646 West Ridge Pike-Linfield, PA 19468 Dr. Judith Johnsrud National Energy Committee Sierra Club 433 Orlando Avenue State College, PA 16803 Associate General Counsel Exelon Generating Company, LLC 4300 Winfield Road Warrenville, IL 60555 Mr. Christopher M. Crane President

& Chief Nuclear Officer Exelon Generating Company, LLC 4300 Winfield Road Warrenville, IL 60555 C. Crane-2 The -information on the'enclosed compact disk is designated exempt from public disclosure pursuant to Section 2.390(d)(1) of Title 10 of the Code of Federal Regulations since it contains security-related information.

If you have any questions, please contact me at (301) 415-2833.Sincerely, Ira!Peter J. Bamford, Project Manager Plant Licensing Branch 1-2 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket Nos. 50-352, 50-353

Enclosure:

Compact Disk with LGS Unit Nos. 1 and 2 SDP Revision 2 and Site Specific Pre-Solved Spreadsheet Official Use Only-Security Related Information DISTRIBUTION (w/o encl): Public LPL1-2 R/F RidsNrrDorlLpll-2 RidsNrrLAABaxter RidsNrrPMPBamford RidsOgcMailCenter RidsAcrsAcnwMailCenter RidsRgnl MailCenter JWeibe, NRR MFranovich, NRR Accession Nos.: Package/ML072490372;Non-Public Letter/ML072490376; Public Letter/ML073040543 Encl./ML071700260, ML071700262 LPL1-2/PM LPL1-2/LA LPL1-2/BC Name PBamford ABaxter HChernoff Date 10/18/07 10/18/07 10/29/07 Official Record Copy OFFICIAL USE ONLY -SECURITY RELATED INFORMATION