ML052700025

Withdrawal of the Request of Approval to Adopt the Extreme Growth Method Related to License Amendment Request 04-01 Revised Steam Generator Voltage-Based Repair Criteria Probability of Detection Method

ML052700025
Person / Time
Site:	Diablo Canyon
Issue date:	09/26/2005
From:	Shukla G NRC/NRR/DLPM/LPD4
To:	Oatley D Pacific Gas & Electric Co
SHUKLA G , NRR/DLPM/PD4, 415-8420
References
TAC MC4738, TAC MC4739
Download: ML052700025 (7)

Text

September 26, 2005 Mr. David H. Oatley, Vice President and General Manager Pacific Gas and Electric Company Diablo Canyon Power Plant P.O. Box 56 Avila Beach, CA 93424

SUBJECT:

DIABLO CANYON POWER PLANT, UNIT NOS. 1 AND 2 - WITHDRAWAL OF THE REQUEST OF APPROVAL TO ADOPT THE EXTREME GROWTH METHOD RELATED TO LICENSE AMENDMENT REQUEST 04-01 RE: REVISED STEAM GENERATOR VOLTAGE-BASED REPAIR CRITERIA PROBABILITY OF DETECTION METHOD (TAC NOS. MC4738 AND MC4739)

Dear Mr. Oatley:

By letter dated March 18, 2004, and its supplements dated August 18 and 20, and September 17, 2004, you applied for an amendment to the Facility Operating License No. DPR-80 and Facility Operating License No. DPR-82 for the Diablo Canyon Power Plant, Unit Nos. 1 and 2, (DCPP) respectively. The amendment request included (i) revisions to the Final Safety Analysis Report Update to incorporate the Nuclear Regulatory Commission approval of a permanently revised steam generator voltage-based repair criteria probability of prior cycle detection (POPCD) method; (ii) addition of a new reporting requirement to the DCPP Technical Specifications as TS 5.6.10.i; and (iii) approval to adopt the extreme growth method coincident with the above POPCD method. However, by letter dated September 17, 2004, you requested that the extreme growth method be approved at a later time. Therefore, on October 28, 2004, the Commission issued Amendment Nos. 177 and 179, without reviewing the extreme growth method.

Subsequently, in a letter dated September 22, 2005, you stated that PG&E has determined that extreme crack growth at DCPP has a very low probability of occurrence, largely due to increased Plus Point inspections and conservative preventive plugging criteria. Therefore, you withdrew the remaining portion of the amendment request pertaining to the approval to adopt the extreme growth method. Accordingly, the subject TACs are being closed. The Commission has filed the enclosed Notice of Partial Withdrawal of Application for Amendments to Facility Operating Licenses with the Office of the Federal Register for publication.

Sincerely,

/RA/

Girija S. Shukla, Project Manager, Section 2 Project Directorate IV Division of Licensing Project Management Office of Nuclear Reactor Regulation Docket Nos. 50-275 and 50-323

Enclosure:

Notice of Partial Withdrawal cc w/encl: See next page

Mr. David H. Oatley, Vice President September 26, 2005 and General Manager Pacific Gas and Electric Company Diablo Canyon Power Plant P.O. Box 56 Avila Beach, CA 93424

SUBJECT:

DIABLO CANYON POWER PLANT, UNIT NOS. 1 AND 2 - WITHDRAWAL OF THE REQUEST OF APPROVAL TO ADOPT THE EXTREME GROWTH METHOD RELATED TO LICENSE AMENDMENT REQUEST 04-01 RE: REVISED STEAM GENERATOR VOLTAGE-BASED REPAIR CRITERIA PROBABILITY OF DETECTION METHOD (TAC NOS. MC4738 AND MC4739)

Dear Mr. Oatley:

By letter dated March 18, 2004, and its supplements dated August 18 and 20, and September 17, 2004, you applied for an amendment to the Facility Operating License No. DPR-80 and Facility Operating License No. DPR-82 for the Diablo Canyon Power Plant, Unit Nos. 1 and 2, (DCPP) respectively. The amendment request included (i) revisions to the Final Safety Analysis Report Update to incorporate the Nuclear Regulatory Commission approval of a permanently revised steam generator voltage-based repair criteria probability of prior cycle detection (POPCD) method; (ii) addition of a new reporting requirement to the DCPP Technical Specifications as TS 5.6.10.i; and (iii) approval to adopt the extreme growth method coincident with the above POPCD method. However, by letter dated September 17, 2004, you requested that the extreme growth method be approved at a later time. Therefore, on October 28, 2004, the Commission issued Amendment Nos. 177 and 179, without reviewing the extreme growth method.

Subsequently, in a letter dated September 22, 2005, you stated that PG&E has determined that extreme crack growth at DCPP has a very low probability of occurrence, largely due to increased Plus Point inspections and conservative preventive plugging criteria. Therefore, you withdrew the remaining portion of the amendment request pertaining to the approval to adopt the extreme growth method. Accordingly, the subject TACs are being closed. The Commission has filed the enclosed Notice of Partial Withdrawal of Application for Amendments to Facility Operating Licenses with the Office of the Federal Register for publication.

Sincerely,

/RA/

Girija S. Shukla, Project Manager, Section 2 Project Directorate IV Division of Licensing Project Management Office of Nuclear Reactor Regulation Docket Nos. 50-275 DISTRIBUTION:

and 50-323 PUBLIC DCollins PDIV-2 Reading KKarwoski

Enclosure:

Notice of Partial Withdrawal RidsNrrDlpmLpdiv (HBerkow) SLong RidsNrrPMGShukla LLund cc w/encl: See next page RidsNrrLALFeizollahi RidsOgcRp RidsAcrsAcnwMailCenter RidsRegion4MailCenter RidsNrrDlpmLpdiv2 (RGramm)

ACCESSION NO.: ML052700025 OFFICE PDIV-2/PM PDIV-2/LA PDIV-2/SC(A)

NAME GShukla LFeizollahi DCollins DATE 9/26/05 9/26/05 9/26/05 OFFICIAL RECORD COPY

7590-01-P UNITED STATES NUCLEAR REGULATORY COMMISSION PACIFIC GAS AND ELECTRIC COMPANY DIABLO CANYON POWER PLANT, UNITS 1 AND 2 DOCKET NOS. 50-275 AND 50-323 NOTICE OF PARTIAL WITHDRAWAL OF APPLICATION FOR AMENDMENTS TO FACILITY OPERATING LICENSES The U.S. Nuclear Regulatory Commission (the Commission) has granted the request of Pacific Gas and Electric Company (the licensee) to partially withdraw the request of approval to adopt the extreme growth method, which was a part of its application dated March 18, 2004, and its supplements dated August 18 and 20, and September 17, 2004, for proposed amendments to Facility Operating License No. DPR-80 and Facility Operating License No. DPR-82 for the Diablo Canyon Power Plant, Unit Nos. 1 and 2, respectively, located in San Luis Obispo County, California.

The amendment request included (i) revisions to the Final Safety Analysis Report Update to incorporate the Nuclear Regulatory Commission approval of a permanently revised steam generator voltage-based repair criteria probability of prior cycle detection (POPCD) method; (ii) addition of a new reporting requirement to the DCPP Technical Specifications as TS 5.6.10.i; and (iii) approval to adopt the extreme growth method coincident with the above POPCD method. However, by letter dated September 17, 2004, the licensee requested that the extreme growth method be approved at a later time. Therefore, on October 28, 2004, the Commission issued Amendment Nos. 177 and 179, to Facility Operating License No. DPR-80 and Facility Operating License No. DPR-82 for the Diablo Canyon Power Plant, Unit Nos. 1 and 2, respectively, without reviewing the extreme growth method.

The Commission had previously issued a Notice of Consideration of Issuance of Amendments published in the Federal Register on June 22, 2004 (69 FR 34704), and a Notice of Issuance of Amendments published in the Federal Register on November 23, 2004 (69 FR 68190). However, by letter dated September 22, 2005, the licensee withdrew the remaining portion of the amendment request pertaining to the approval to adopt the extreme growth method. The licensee's application dated March 18, 2004, and its supplements dated August 18 and 20, and September 17, 2004, and withdrawal letter dated September 22, 2005, are available in the NRC's Agencywide Documents Access and Management System (ADAMS) under Accession Numbers ML040840449, ML042380475, ML042530054, ML042680323 and ML052660327, respectively.

For further details with respect to this action, see the application for amendment dated March 18, 2004, its supplements dated August 18 and 20, and September 17, 2004, and withdrawal letter dated September 22, 2005, which withdrew the request of approval to adopt the extreme growth method. Documents may be examined, and/or copied for a fee, at the NRCs Public Document Room (PDR), located at One White Flint North, 11555 Rockville Pike (first floor), Rockville, Maryland. Publicly available records will be accessible electronically from the ADAMS Public Electronic Reading Room on the internet at the NRC Web site, http://www.nrc.gov/reading-rm/adams/html. Persons who do not have access to ADAMS or

who encounter problems in accessing the documents located in ADAMS, should contact the NRC PDR Reference staff by telephone at 1-800-397-4209, or 301-415-4737 or by email to pdr@nrc.gov.

Dated at Rockville, Maryland, this 26th day of September 2005.

FOR THE NUCLEAR REGULATORY COMMISSION

/RA/

Girija S. Shukla, Project Manager, Section 2 Project Directorate IV Division of Licensing Project Management Office of Nuclear Reactor Regulation

Diablo Canyon Power Plant, Unit Nos. 1 and 2 cc:

NRC Resident Inspector Richard F. Locke, Esq.

Diablo Canyon Power Plant Pacific Gas & Electric Company c/o U.S. Nuclear Regulatory Commission P.O. Box 7442 P.O. Box 369 San Francisco, CA 94120 Avila Beach, CA 93424 City Editor Sierra Club San Lucia Chapter The Tribune c/o Henriette Groot 3825 South Higuera Street 1000 Montecito Road P.O. Box 112 Cayucos, CA 93430 San Luis Obispo, CA 93406-0112 Ms. Nancy Culver Mr. Ed Bailey, Chief San Luis Obispo Radiologic Health Branch Mothers for Peace State Department of Health Services P.O. Box 164 P.O. Box 997414 (MS 7610)

Pismo Beach, CA 93448 Sacramento, CA 95899-7414 Chairman Mr. James D. Boyd, Commissioner San Luis Obispo County Board of California Energy Commission Supervisors 1516 Ninth Street (MS 31)

Room 370 Sacramento, CA 95814 County Government Center San Luis Obispo, CA 93408 Mr. James R. Becker, Vice President Diablo Canyon Operations Mr. Truman Burns and Station Director Mr. Robert Kinosian Diablo Canyon Power Plant California Public Utilities Commission P.O. Box 3 505 Van Ness, Room 4102 Avila Beach, CA 93424 San Francisco, CA 94102 Jennifer Tang Diablo Canyon Independent Safety Field Representative Committee United States Senator Barbara Boxer ATTN: Robert R. Wellington, Esq. 1700 Montgomery Street, Suite 240 Legal Counsel San Francisco, CA 94111 857 Cass Street, Suite D Monterey, CA 93940 Regional Administrator, Region IV U.S. Nuclear Regulatory Commission Harris Tower & Pavillion 611 Ryan Plaza Drive, Suite 400 Arlington, TX 76011-8064 March 2005