ML053060343

Summary of October 26, 2005 Meeting with Representatives of Southern California Edison for San Onofre Nuclear Generating Station

ML053060343
Person / Time
Site:	San Onofre
Issue date:	11/16/2005
From:	Donohew J Plant Licensing Branch III-2
To:	Office of Nuclear Reactor Regulation
Donohew J N, NRR/DLPM,415-1307
References
Download: ML053060343 (6)

Text

November 16, 2005 LICENSEE:

Southern California Edison FACILITIES:

San Onofre Nuclear Generating Station, Units 2 and 3

SUMMARY

OF OCTOBER 26, 2005, MEETING WITH REPRESENTATIVES OF SOUTHERN CALIFORNIA EDISON (SCE) FOR SAN ONOFRE NUCLEAR GENERATING STATION A meeting was held on Wednesday, October 26, 2005, between the Nuclear Regulatory Commission (NRC) staff and the licensee for San Onofre Nuclear Generating Station, Units 2 and 3 (SONGS). The meeting was held at the request of the licensee so that they could explain to the NRC staff how they see the California Independent System Operator (CAISO, the electric power grid operator for California) is working in California, in general, and, in particular, on August 25, 2005. The notice for the meeting was issued on October 11, 2005.

By letter dated September 2, 2005 (Agencywide Documents and Access Management System (ADAMS) Accession No. ML052450470), the NRC requested SCE to address the communication between the SONGS plant operators and the grid operators on August 25, 2005, when loss of a major western transmission line occurred just as California power use was approaching its peak, and the CAISO issued a transmission emergency notice for Southern California to request utilities in the Southern Region to reduce demand on the system. The licensee responded in its letter dated September 30, 2005 (ADAMS Accession No. ML052800224). The meeting was to discuss SCE's letter dated September 30, 2005, and answer any questions from the NRC.

A list of attendees is provided as an enclosure. The materials handed out by the licensee, agenda and presentation slides, are available in ADAMS under accession no. ML053050258.

There was no handout from the NRC staff.

An important part of the meeting was the presentation on the CAISO and SCE roles and responsibilities, which is given on pages 15 through 18 of the presentation slides. The agenda for the meeting was the following:

SCE's Agenda for the Meeting (page 2)

Purpose of the Meeting (page 3)

SONGS* Grid requirements (pages 4 through 14)

CAISO and SCE Roles and Responsibilities (pages 15 through 18)

SCE Grid Analysis and Operation (pages 19 through 33)

Probabilistic risk Assessment (PRA) Model/Maintenance Rule Program (pages 34 through 37)

NRC Questions (page 38)

In the meeting, the licensee and the CAISO made the point that one needs to differentiate between "grid reliability" and "service reliability." The reduction in demand that occurred on August 25, 2005, by the dropping of 1700 megawatts of load (i.e., the 900 megawatts of firm load and 800 megawatts of voluntary, interruptible application, which is referred to in the NRC letter of September 2, 2005, to SCE) affected the "service reliability." This was necessary in order to maintain the reliability of the grid. The NRC staff indicated the need to limit risk-significant maintenance activities when the grid is susceptible to seasonal stress from generation or distribution limitations.

The NRC staff completed its discussion of the licensee's presentation, and the meeting was closed. Please direct any inquiries to me at 301-415-1307, or jnd@nrc.gov.

/RA Jack Donohew, Senior Project Manager Plant Licensing Branch IV Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket Nos. 50-361 and 50-362

Enclosure:

List of Meeting Attendees cc w/encl: See next page load and 800 megawatts of voluntary, interruptible application, which is referred to in the NRC letter of September 2, 2005, to SCE) affected the "service reliability." This was necessary in order to maintain the reliability of the grid. The NRC staff indicated the need to limit risk-significant maintenance activities when the grid is susceptible to seasonal stress from generation or distribution limitations.

The NRC staff completed its discussion of the licensee's presentation, and the meeting was closed. Please direct any inquiries to me at 301-415-1307, or jnd@nrc.gov.

/RA Jack Donohew, Senior Project Manager Plant Licensing Branch IV Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket Nos. 50-361 and 50-362

Enclosure:

List of Meeting Attendees cc w/encl: See next page DISTRIBUTION:

PUBLIC LPLIV Reading RidsNrrDorl (CHaney/CHolden)

RJenkins JLamb RidsnrrDorlLpliv (DTerao)

TKoshy CAraguas RidsNrrPMJDonohew APal TMensah RidsNrrLALFeizollahi MFields JDixon-Herrity, EDO, RIV RidsOgcRp TPruett, RIV RidsAcrsAcnwMailCenter DCollins ADAMS ACCESSION NO.: ML053060343 OFFICE LPLIV/PM LPLIV/LA EEEB/SC LPLIV/BC NAME JDonohew LFeizollahi RJenkins DTerao DATE 11/15/05 11/15/05 11/15/05 11/16/05 OFFICIAL RECORD COPY

LIST OF ATTENDEES AT MEETING OF OCTOBER 26, 2005 ON SOUTHERN CALIFORNIA EDISON LETTER SUBMITTED SEPTEMBER 30, 2005 NAME AFFILIATION M. Fields NRC/NRR/PDIV-2 D. Collins NRC/NRR/PDIV-2 R. Jenkins NRC/NRR/EEEB A. Pal NRC/NRR/EEEB J. Lamb NRC/ACRS T. Koshy NRC/NRR/EEEB C. Araguas NRC/NRR/PRTA M. Short SCE M. Carr SCE J. Ramsdell SCE R. Rosenblum SCE A.E. Scherer SCE G. Tarpler SCE J. Rainsberry SCE D. Hansford SCE K. Johnson SCE B. Poole FERC J. McIntosh CAISO G. Clefton NEI A. Marion NEI Where:

CAISO

= California Independent System Operator EEEB

= Electrical Engineering Branch FERC

= Federal Energy Regulatory Commission NEI

= Nuclear Energy Institute NRC

= Nuclear Regulatory Commission NRR

= Office of Nuclear Reactor Regulation PDIV-2

= Project Directorate IV-2 SCE

= Southern California Edison ENCLOSURE

November 2005 San Onofre Nuclear Generating Station Units 2 and 3 cc:

Mr. Daniel P. Breig Southern California Edison Company San Onofre Nuclear Generating Station P. O. Box 128 San Clemente, CA 92674-0128 Mr. Douglas K. Porter, Esquire Southern California Edison Company 2244 Walnut Grove Avenue Rosemead, CA 91770 Mr. David Spath, Chief Division of Drinking Water and Environmental Management P. O. Box 942732 Sacramento, CA 94234-7320 Chairman, Board of Supervisors County of San Diego 1600 Pacific Highway, Room 335 San Diego, CA 92101 Eileen M. Teichert, Esq.

Supervising Deputy City Attorney City of Riverside 3900 Main Street Riverside, CA 92522 Mr. Gary L. Nolff Power Projects/Contracts Manager Riverside Public Utilities 2911 Adams Street Riverside, CA 92504 Regional Administrator, Region IV U.S. Nuclear Regulatory Commission 611 Ryan Plaza Drive, Suite 400 Arlington, TX 76011-8064 Mr. Michael Olson San Diego Gas & Electric Company P.O. Box 1831 San Diego, CA 92112-4150 Mr. Ed Bailey, Chief Radiologic Health Branch State Department of Health Services Post Office Box 997414 (MS7610)

Sacramento, CA 95899-7414 Resident Inspector/San Onofre NPS c/o U.S. Nuclear Regulatory Commission Post Office Box 4329 San Clemente, CA 92674 Mayor City of San Clemente 100 Avenida Presidio San Clemente, CA 92672 Mr. James T. Reilly Southern California Edison Company San Onofre Nuclear Generating Station P.O. Box 128 San Clemente, CA 92674-0128 Mr. James D. Boyd, Commissioner California Energy Commission 1516 Ninth Street (MS 31)

Sacramento, CA 95814 Mr. Ray Waldo, Vice President Southern California Edison Company San Onofre Nuclear Generating Station P.O. Box 128 San Clemente, CA 92764-0128 Mr. Brian Katz Southern California Edison Company San Onofre Nuclear Generating Station P.O. Box 128 San Clemente, CA 92764-0128 Mr. Steve Hsu Department of Health Services Radiologic Health Branch MS 7610, P.O. Box 997414 Sacramento, CA 95899 Mr. A. Edward Scherer Southern California Edison Company San Onofre Nuclear Generating Station P.O. Box 128 San Clemente, CA 92674-0128 San Onofre Nuclear Generating Station Units 2 and 3 cc:

Mr. Richard M. Rosenblum Chief Nuclear Officer Southern California Edison Company San Onofre Nuclear Generating Station P.O. Box 128 San Clemente, CA 92674-0128