ML20069E322
| ML20069E322 | |
| Person / Time | |
|---|---|
| Site: | Summer  |
| Issue date: | 08/20/1982 |
| From: | Office of Nuclear Reactor Regulation |
| To: | |
| Shared Package | |
| ML20069E320 | List: |
| References | |
| NUDOCS 8209230577 | |
| Download: ML20069E322 (2) | |
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s SAFETY EVALUATION BY THE OFFICE OF NUCLEAR REACTOR REGULATION RELATED TO AMENDMEt!T NO. 1 TO LICENSE NPF-12 SOUTH CAROLINA ELECTRIC & GAS COMPANY SOUTH CAROLINA PUBLIC SERVICE AUTHORITY INTRODUCTION By letter, dated August 18, 1982 South Carolina Electric & Gas Company (SCE&G) requested relief from a portion of Technical Specification 3/4 7.10 regarding fire-rated assemblies for the Virgil C. Sumner Nuclear Station, Unit No.1.
Specifically, relief was requested from the requirement to establish a continuous i
fire watch in tne event that a fire-rated assembly is not operable during that period prior to achieving initial criticality.
SCEAG is currently conducting a comprehensive program which involves the inspection of all fire rated assemblies to assure consistency with the fire protection evaluation. This program was initiated as a result of the discovery of deviations between the fire protection plan and the as-built drawings.
SCE8G proposes to institute a one-hour roving fire watch during this period to make more efficient use of its resources.
EVALUATION Under the action sta.ement for the current Technical Specification, with one or more of the f1ce.-rated assemblies and/or sealing devices inoperable, within one hour a continu.as fire watch must be established on at least one side of the affected assembly, or if the fire detectors are inoperable on at least one side of the inoperable assembly, an hourly fire watch patrol may be established in lieu of a continuous fire watch. SCE&G proposes that during the period prior to initial criticality the staff waive the requirement for operable fire detector as a prerequisite for an hourly fire watch patrol. By waiving this requirenant SCE&G can employ a roving fire patrol instead of the continuous fire watch required by the current Technical Specification.
Licensing condition C.2(18)(b)(1) requires a two-hour fire patrol prior to initially exceeding 5% of full power, and a one-hour fire patrol thereafter to cover those areas where fire detectors are required but not installed. SCE&G 7-has inplemented this licensing condition by conducting a two-hour fire patrol of all accessible areas of the plant that contain safety-related equipment.
3EC&G plans to increase this to a one-hor.r fire patrol.
Such a patrol will assure that all areas witnout operabie fire detectors as well as ali areas with inoperable fire-rated assemblies are inspected each hodr.
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., SCE8G states that the justification for this relief is based upon the lack of a radioactive I:.aterial inventory and residual heat in the reactor and the low probability of an accident during this period.
tie agree with the justification provided by SCE8G. Further we conclude that the proposed one-hour fire patrol that will inspect all appropriate areas of the plant will permit a more effective use of SCEAG's resources and at the same tine assure an acceptable level of protection during this period.
ENVIRONMENTAL CONSIDERATION We have determined that the amendment does not authorize a change in effluent types or total amounts nor an increase in power level and will not result in any significant environmental impact. Having made this determination, we have further concluded that the amendnent involves an action which is insignificant from the standpoint of environmental impact and, pursuant to 10 CFR Section 51.5(d)(4), that an environmental impact statement or negative declaration and environmental impact appraisal need not be prepared in Connection with the issuance of this amendment.
CONCLUSION tie have concluded, based on the considerations discussed above, that:
(1) because the amendment does not involve a significant increase in the probability or consequences of accidents previously considered and does not involve a significant decrease in a safety margin, the amendment does not involve a significant hazards consideration, (2) there is reasonable assurance that the health and safety of the public will not be endangered by operation in the proposed manner, and (3) such activities will be in conpliance with the Comission's regulations and the issuance of this amentient will not be inimical to the connon defense and security or to the health and safety of the public.
DATE: AUG 2 01982
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