ML20235L477
| ML20235L477 | |
| Person / Time | |
|---|---|
| Site: | San Onofre  |
| Issue date: | 02/16/1989 |
| From: | Hickman D Office of Nuclear Reactor Regulation |
| To: | |
| Shared Package | |
| ML20235L478 | List: |
| References | |
| NUDOCS 8902270541 | |
| Download: ML20235L477 (3) | |
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'b UNITED STATES NUCLEAR REGULATORY COMMISSION p
SOUTHERN CALIFORNIA EDISON COMPANY. ET AL DOCKET NOS. 50-361/362 NOTICE OF DENIAL OF AMENDMENTS TO FACILITY OPERATING LICENSES AND OPPORTUNITY FOR HEARING The U.S. Nuclear Regulatory Comission (the Commission) has denied a request by Southern California Edison Company, San Diego Gas and Electric Company, The City of Riverside, California and the City of Anaheim, California (licensees) for amendments to Facility Operating License Nos. NPF-10 and NPF-15, issued to the licensees, for operation of the San Onofre Nuclear Generating Station (SONGS), Units 2 and 3, located in San Diego County, California. The Notice of Consideration of Issuance of Amendments was published in the FEDERAL REGISTER on March 9, 1988 (53 FR 7602).
The amendments, as proposed by the licensees, would revise Technical Specification (TS) 3/4.7.1.5, " Main Steam Line Isolation Valves (MSIVs)," to include operability requirements for the main feedwater isolation valves (MFIVs),
the main feedwater backup isolation valves (MFBIVs), and the steam generator sample isolation valves (SGSIVs) and blowdown isolation valves (BIVs). They would also revise TS 3/4.7.1.2, " Auxiliary Feedwater System System," to
-a incorporate operability requirements for the auxiliary feedwater isolation valves (AFWIVs), the auxiliary feedwater control valves (AFWCVs), and the auxiliary feedwater bypass control valves (AFWBCVs).
The staff finds that the proposed 72 hour8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> action statement for the MFIVs is not acceptable because the MFIV and the MFBIV in each feedwater line provide the same degree of protection against a steam line break as do the two MSIVs in the main steam lines. That is, either the MFIV or the MFBIV in the feedwater gg22{gggt{ g[y 1
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s'. L line to the broken steam generator must close to ensure that no more than one steam generator will blow down, just as either MSIV must close to ensure that no more than one steam generator will blow down. Therefore, the action state-ments for the MFIVs and the MFBIVs should be identical to that for the MSIVs (4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br />)sinceeachprovidesthesamedegreeofprotectionagainstthesame accident. For this reason, the proposed changes have been denied.
By March 29, 1989, the licensees may demand a hearing with respect to the denial described above and any person whose interest may be affected by this proceeding may file a written petition for le u e to intervene.
A request,for a hearing or petition for leave to intervene must be filed with the Secretary for the Comission, U.S. Nuclear Regulatory Comission, Washington, D.C. 20555, Attention: Docketing and Service Branch, or may be delivered to the Comission's Public Document Room, 2120 L Street, N.W.,
Washington, D.C., by the above date.
A copy of any petitions should also be sent to the Office of the General Counsel, U.S. Nuclear Regulatory Comission, Washingten D.C. 20555, and to Charles R. Kocher, Esq., Southern California Edison Company, 2244 Walnut Grove Avenue, P.O. Box 800, Rosemead, California 91770, and Orrick, Herrington &
Sutcliff, Attn: David R. Pigott, Esq., 600 Montgomery Street, Sar. Francisco, California 94111.
For further details with respect to this action, see (1) the application for amendments dated DecenW M,1987, and (2) the Comission's letter to the licensees dated February 16, 1989, which are available for public inspection at the Comission's Public Document Room, 2120 L Street, N.W., Washington, D.C.,
and at the General Library, University of California at Irvine, Irvine,
'.j.
A. California 92713. A copy of Item (2) may be obtained upon request addressed to the U.S. Nuclear Regulatory Comission, Washington, D.C.
20555, Attention:
Director, Division of Reactor Projects - III, IV, V and Special Projects.
Dated at Rockville, Maryland, thi's 16th day of Februar,y2989.
FOR THE NUCLEAR REGULATORY COMMISSION dahlh l
n Donald E. Hic 6 man, Project Manager Project Directorate V Division of Reactor Projects - III, IV, Y and Special Projects 4