ML19332C082
| ML19332C082 | |
| Person / Time | |
|---|---|
| Site: | San Onofre  |
| Issue date: | 11/16/1989 |
| From: | Knighton G Office of Nuclear Reactor Regulation |
| To: | |
| Shared Package | |
| ML19332C083 | List: |
| References | |
| NUDOCS 8911220295 | |
| Download: ML19332C082 (3) | |
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7590-01
. UNITED STATES NUCLEAR REGULATORY COMMISSION SOUTHERN CALIFORNIA EDIS0h COMPANY. ET AL.
DOCKET NO. 50-362 SAN'ONOFRE NUCLEAR GENERATING STATION. UNIT 3 ENVIRONMENTAL ASSESSMENT.AND FINDING OF NO SIGNIFICANT IMPACT The U. S. Nuclear. Regulatory Commission (the Comission) is considering issuance of an arrendment to Fecility Operating License No. NPF-15 issued to l
Southern Californie Edison Company, San Diego Gas and Electric Company, the City of Riversice, California and the City of Anaheim, California (the licensees), for operation of San Onofre Nuclear Generating Station, Unit 3, located in San Diego County, California.
i ENVIRONMENTAL ASSESSMENT Icentification of Proposeo Action:
The proposed amendment would revise Technical Specification 3,'4.7.6,
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" Snubbers." Surveillance Requirer:ent 4.7.6.b requires a visual inspection of eli snubbers on a regular basis. The interval for visual inspections is decreesed as a function of the nunter of inoperable snubbers discovered. With no inoperable snubbers found, a maximum interval of 18 months plus or minus 25% is allowed. With one inoperable snubber per inspection period, the intervel is 12 months plus or minus 25%. The proposed change would allow a one-time extension of the 12 month interval to 20 months plus or minus 25%, for the J
case where one inoperable snubber was found.
.The Need for the Proposed Action:
The proposed amenderent is required to prevent unnecessary unit shutdown.
Performance of these inaccessible snubber inspections would require unit U911220295 891117 ADOCK0500g2 DR
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shutdowri cue.to their location in high radiation zones and the need to erect ledders or.scoffolding for inspection, t
Environmental-Impacts of the Proposed Action:
The proposed action would not. involve a significant change in the probability or consequences of any accident previously evaluated, nor does it involve a new or different kind of accident. Consequently, any radiological releases resulting from an accident woulo not be significantly greater than
.previously determined. The proposed amendment does not otherwise affect routine radiolog* cal plant effluents. Therefore, the Commission concludes that there are no significant radiological environmental impacts associated with the proposed amendment. The Comnussion also concludes 'th6t the proposed action will not-result in a significant increase in individual or cumulative occupa-tional rediation exposure..
With regard to nooradiological impacts, the proposeo amendment does not offeCI nohradiological plant effluents and has no other environrertal impact.
Therefore, the Commission concludes that there are no significant nonradio-l logical environmental impacts associated with the proposed aniendment.
L The Notice of Consideration of Issuance of Amendment end Opportunity for L
Hearing in connection with this action was publ.ished in the Federal Register L
on September 7,1989(54.FR37171). No request for hearing or petition for leave to intervene was filed following this notice.
Altern6tives to the Proposed Action:
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Since the Connission concluded that there are no significant environmental effects that would result from the proposed action, any alternatives with equal or greater environmental impacts need not be evaluated.
The principal siternative would be to deny the requested amendment. This would not reduce environmental impacts of plant operation and would result in reduced operational flexibility.
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-3 Alternative Use of Resources:
This action.does not involve the use of resources not previously considered
.in connection with the Final Environmental Statement related to operation of San Onofre Nuclear Generating Station, Units 2 and 3, dated April 1981 and its Errata dated June 1981.
Agencies and Persons Consulted:
The NRC staff has reviewee the licensees' request that supports the I
proposed amendnent. The NRC staff did not consult other agencies or persons.
FINDING OF NO SIGNIFICANT IMPACT The Con,taission has determined not to prepare an environmental impact -
l statement for the proposed amendment.
Based upon the foregoing environmental assessment, the Commissior concludes i
that-the proposed 6ction will not have a significant effect on the quality of the hurran environment.
For further details with respect to this action, see the application for l
amendment dated July 26, 1989 which is available for public inspection at
-the Commission's Public Document Room, 2120 L Street NW., Washington, DC 20555,
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6nd at the General Library, University of California, P.O. Box 19557 Irvine, California 92713.
4 Dated at Rockville, Maryland, this 16 day of November 1989.
FOR THE NUCLEAR REGULATORY COMMISSION Y
- 4 George Knighton.41 rector Project Directorate V Division of Reactor Projects - 111 IV, Y and Special Projects Office of Nuclear Reactor Regulation i