ML19320A191
| ML19320A191 | |
| Person / Time | |
|---|---|
| Site: | Arkansas Nuclear  |
| Issue date: | 01/18/1977 |
| From: | Office of Nuclear Reactor Regulation |
| To: | |
| Shared Package | |
| ML19320A182 | List: |
| References | |
| NUDOCS 8004210496 | |
| Download: ML19320A191 (3) | |
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UNITED STATES p
NUCLEAR REGULATORY COMMISSION j,
j WASHINGTON, D. C. 20666 e
g SAFETY EVALUATION BY THE OFFICE OF NUCLEAR REACTOR REGULATION SUPPORTING AMENDMENT NO.18 TO FACILITY OPERATING LICENSE NO. DPR-51 ARKANSAS POWER & LIGHT COMPANY ARKANSAS NUCLEAR ONE - UNIT 1 DOCKET NO. 50-313 Introduction By letter dated November 12, 1976, the Arkansas Power & Light Company (AP&L) submitted an application for a license amendment to:
(1) Modify the Technical Specification concerning reactor building tendon surveillance to assure conformance with the latest regulatory guidance, and (2) Delete the Technical Specification requirements for air distribution testing across HEPA filters and charcoal adsorbers in the penetration room ventilation system and fuel handling area ventilation system.
Discussion and Evaluation Present Technical Specification 4.4.2~1 requires that "... twenty-one tendons shall be selected for periodic inspection for symptoms of material deterioration or force reduction", implying that the rample shall not vary over the lifetime of the plant.
However, Regulatory Guide 1.35, Revision 2, January 1976, states "For each inspection, the tendons should again be selected on a random but representative basis so the sample group will change somewhat each time." AP&L's proposed change to the Technical Specification will accomplish this objective and therefore is acceptable.
The requirement for air distribution testing across HEPA filters and charcoal adsorbers in the penetration room and fuel handling area ventilation systems is considered necessary since improper flow distribu-tion could result in early exhaustion of those areas receiving the most flow, ultimately resulting in increased radioactive releases. Therefore the deletion of this Technical Specification requirement is not acceptable.
However, we realize that c'hanges in air distrifiution will occur orily after maintenance or testing of the system which would physically alter the system. Our current requirement for air distribution tests reflects this position in that tests are required " initially and after any maintenance or testing that could affect the air distribution within the
... system".
Therefore by:ause we consider the existijn Technical
~$)ecification requirement.for testing once per refueTing period Mo-exceed 18 months) regardless of whether. there has been maintenanca or testing thatyuld physically altar the system] to b_e unnecessary
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- and because the new specification <will assure air distribution testing after those events which could cause the distribution to change, we find the modified' Technical Specification to be acceptable. The licensee has agreed to this modification.
Environmental Consideration We have determined that Cie 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 amendment involves an action which is insignificant from the standpoint of environmental impact and pursuant to 10 CFR 551.5(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.
Conclusions We 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 increase 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 conducted in compliance with the Commission's regulations and the issuance of this amendment will not be inimical to the common defense and security or to the health and safety of the public.
Date:
January 18, 1977
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