ML20206B047
| ML20206B047 | |
| Person / Time | |
|---|---|
| Site: | San Onofre  |
| Issue date: | 03/23/1987 |
| From: | Office of Nuclear Reactor Regulation |
| To: | |
| Shared Package | |
| ML20206B045 | List: |
| References | |
| TAC-60471, TAC-60472, NUDOCS 8704080302 | |
| Download: ML20206B047 (3) | |
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NUCLEAR REGULATORY COMMISSION j
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WASHINGTON, D. C. 20655
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-SAFETY EVALUATION BY THE OFFICE OF NUCLEAR REACTOR REGULATION SUPPORTING AMENDMENT NO. 58 TO FACILITY OPERATING LICENSE NPF-10
' AND AMENDMENT NO. 47 TO FACILITY OPERATING LICENSE NPF-15 SOUTHERN CALIFORNIA EDISON COPPANY, ET AL.
SAN ONOFRE NUCLEAR GENERATING STATION, UNITS'2 & 3-l DOCKET NOS. 50-361 AND 50-382
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1.0 INTRODUCTION
Southern California-Edison Company (SCE), on behalf of itself and the-other-licensees, San Diego Gas and Electric Company, The City of Riverside,'
California, and The City of Anaheim, California, has submitted a number of applications for license amendments for San Onofre Nuclear Generating F
Station (SONGS), Units 2 and 3.
The NRC staff's evaluation of-two of these applications is described below.
2.0 DISCUSSION.
The proposed change, designated PCN-212, would revise Technical Specification-3/4.7.6 " Snubbers." Technical Specification 3/4.7.6 requires that snubbers be operable to ensure the integrity of safety related systems and specifies the frequency and. type cf periodic inspections required to verify snubber operability. The proposed change would add additional requirements for visual inspection acceptance criteria and transient event inspections.
Currently, surveillance requirement 4.7.6.c, " Visual Inspection Acceptance i
Criteria," requires that visual inspections verify that attachments to the foundation or supporting structure are secure. 'The proposed change would revise'the visual inspection acceptance criteria to require, in addition, that the fasteners for attachment of the snubber to the component or pipe and the snubber anchorage are also secure.
Surveillance Requirement.4.7.6.j, " Refueling Outage Inspection," requires that during each refueling outage, an inspection,be performed of snubbers attached to sections of safety systems and piping that has experienced -
unexpected potentially damaging transients as determined from a review of operational data and visual inspection of the system. The proposed t
change would (1) retitle Surveillance Requirement 4.7.6.j, " Transient Event Inspections," (2) require that inspections be perfonned on all hydraulic and mechanical snubbers attached to sections of safety systems that have experienced unexpected, potentially damaging transients as
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_,, determined from a review of operational data and (3) require visual inspection of the systems within six months following a determination that such an event has occurred. The proposed change would also require more frecuent reviews of operational data than at the refueling outage interval currently specified.
3.0 EVALUATION The NRC staff has reviewed the proposed change and finds the change to TS 4.7.6.c to be acceptable because it adds an additional requirement to inspect the fasteners which secure snubbers both to the protected component and to the snubber anchorage.
In addition, the staff finds the proposed change to TS 4.7.6.j to be acceptable because it will require that potentially damaged snubbers be inspected within six months of a determination that a potentially damaging transient has occurred, rather than at each refueling outage. This will result inmore timely inspection and replacement of damaged snubbers, and is therefore acceptable.
4.0 CONTACT WITH STATE OFFICIAL The NRC staff has advised the Chief of the Radiological Health Branch, State Department of Health Services, State of California, of the proposed determinations of no significant hazards consideration. No comments were received.
5.0 ENVIRONMENTAL CONSIDERATION
4 These amendments involve changes in the installation or use of facility components located within the restricted area. The staff has determined that the amendments involve no significant increase in the amounts of any effluents that may be released offsite and that there is no significant increase in individual or cumulative occupation radiation exposure. The Commission has previously issued proposed findings that the amendments involve no significant hazards consideration, and there has been no public coment on such findings. Accordingly,- the amendments meet the eligibility criteria for categorical exclusion set forth in 10 CFR Sec.
51.22(c)(9). Pursuant to 10 CFR 51.22(b), no environmental impact statement or environmental assessment need to be prepared in connection with the issuance of these amendments.
6.0 CONCLUSION
Based upon our evaluation of the proposed changes to the San Onofre Units 2 and 3 Technical Specifications, we have concluded that:
there is reasonable assurance that the health and safety of the public will not be endangered by operation in the proposed manner, and such activities will l
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t-be conducted in compliance with the Commission's regulations and the
. issuance of the amendments will not be inimical to the common defense and security or to the health and safety of the public. We, therefore, conclude that the proposed changes are acceptable and are hereby incorporated into the San Onofre 2 and 3 technical specifications.
Principal Contributor:
M. Hartzman Dated: March 23,1987.
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