ML072980072

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

ML072980072
Person / Time
Site:	Comanche Peak
Issue date:	10/26/2007
From:	Balwant Singal NRC/NRR/ADRO/DORL/LPLIV
To:	Blevins M Luminant Power
singal, balwant NRR/DORL 301-415-3016
Shared Package
ML072980068	List: ML072980072
References
TAC MD6415
Download: ML072980072 (4)

Text

Rml

• I*m .... Aiim AgmAIm UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. 20555-0001 October 26, 2007 Mr. M. R. Blevins Senior Vice President

& Chief Nuclear Officer Luminant Power ATTN: Regulatory Affairs P- O_ Box -1002- -

Glen Rose, TX 76043

SUBJECT:

COMANCHE PEAK STEAM ELECTRIC STATION, UNITS 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. Blevins:

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 Comanche Peak Steam Electric Station, Units 1 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.

61FFlil!, _62 EGUfITRA RlJ96DIM-0MAl-SW

_01 I IAL!USE ON.3znr' lLTDI~rn.A~r M.R. Blevins 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) 415-3016.

Sincerely,-

Balwant K. Singal, Senior Project Manager Plant Licensing Branch IV Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket Nos., 50-445, 50-446

Enclosure:

Compact Disk with Comanche Peak Steam Electric Station, Units 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 Wi I USE 0 - z- unr

__RqflRE!ATED lirNr;@RMTIOM

Comanche Peak Steam Electric Station cc:

Senior Resident Inspector Mr. Richard A. Ratliff, Chief U.S. Nuclear Regulatory Commission Bureau of Radiation Control P.O. Box 2159 Texas Department of Health Glen Rose, TX 76403-2159 1100 West 49th Street Austin, TX 78756-3189 Regional Administrator, Region IV U.S. -Nuclear. Regulatory Commission -Mr,-Brian Almon 611 Ryan Plaza Drive, Suite 400 Public Utility Commission Arlington, TX 76011 William B. Travis Building P.O. Box 13326 Mr. Fred W. Madden, Director 1701 North Congress Avenue Regulatory Affairs Austin, TX 78701-3326 Luminant Generation Company LLC P.O. Box 1002 Ms. Susan M. Jablonski Glen Rose, TX 76043 Office of Permitting, Remediation and Registration Timothy P. Matthews, Esq. Texas Commission on Environmental Morgan Lewis Quality 1111 Pennsylvania Avenue, NW MC-122 Washington, DC 20004 P.O. Box 13087 Austin, TX 78711-3087 County Judge P.O. Box 851 Anthony P. Jones Glen Rose, TX 76043 Chief Boiler Inspector Texas Department of Licensing Environmental and Natural and Regulation Resources Policy Director Boiler Division Office of the Governor E.O. Thompson State Office Building P.O. Box 12428 P.O. Box 12157 Austin, TX 78711-3189 Austin, TX 78711 October 2007

1U31-tWE OUL-'

1.ICA 8-6O1111 1 WlEAT ED .... fUATIO M.R. Blevins ýctober 26,'2007 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 Regulationssince it contains security-related information..

If you have any questions, please contact me at (301) 415-3016.

. . . . .- Sincerely,

/RA by Carl F. Lyon for/

Balwant K. Singal, Senior Project Manager Plant Licensing Branch IV Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket Nos. 50-445, 50-446

Enclosure:

Compact Disk with Comanche Peak Steam Electric Station, Units 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 DISTRIBUTION: w/o encl PUBLIC RidsNrrPMBSingal LPLIV Reading RidsNrrLAJBurkhardt RidsAcrsAcnwMailCenter RidsOgcRp RidsNrrDirsltsb RidsRgn4MailCenter RidsNrrDorlDpr- RidsNrrPMJWiebe RidsNrrDorlLpl4 RidsNrrDraApob ADAMS Accession Nos.: Public PKG: ML072980068, Public Letter ML072980072, Non-Public Pkg ML071700105, Non-Public Letter ML072610202, Non-Public Notebook ML071700107, NON-Public Spreadsheet ML071700111 OFFICE NRR/LPL4/PM NRR/LPL4/LA NRR/LPL4/BC NAME BSingal ,IA JBurkhardt ,L.I-' THiltz p"<1 (,f (

DATE 0'1 67 Io7 Q_ (0r7 OFFICIAL AGENCY RECORD o--emU3E

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