ML19326B923
| ML19326B923 | |
| Person / Time | |
|---|---|
| Site: | Arkansas Nuclear  |
| Issue date: | 02/18/1977 |
| From: | Office of Nuclear Reactor Regulation |
| To: | |
| Shared Package | |
| ML19326B916 | List: |
| References | |
| NUDOCS 8004180642 | |
| Download: ML19326B923 (2) | |
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4 UNITED STATES j
1 NUCLEAR REGULATORY COMMISSION y-WASHINGTON, D. C. 20555 e
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SAFETY EVALUATION BY THE OFFICE OF NUCLEAR REACTOR REGULATION SUPPORTING AMENDMENT NO. 19 TO FACILITY OPERATING LICENSE NO. DPR-51 ARKANSAS POWER & LIGHT COMPANY ARKANSAS NUCLEAR ONE - UNIT 1 DOCKET N0. 50-313 Introduction By letter dated October 6,1976, the Arkansas Power & Light Company (AP&L) submitted an application for a license amendment to delete the surveillance requirements for the Boric Acid Mix Tank (BAMT) temperature and level channels.
Discussion and Evaluation Present Technical Specification 4.1, OPERATIONAL SAFETY ITEMS, specifies the " minimum frequency and type of surveillance to be applied to unit equipment and conditions," and applies to " items directly related to safety limits and limiting conditions for operation." Surveillance of level and temperature of the BAMT is preser.tly included in this specification, with requirements delineated in Table 4.1-1.
However, this tank is not required to fulfill any safety function.
The boric acid.additio n tank, borated water storage tank (BWST), and two core flooding tanks provide boric acid for injection if requi.ed during accident conditions.
Operating level and concentration of contents in the boric acid addition tank are prescribed by the technical specification 3.2.
Technical Specification 3.3 delineates level and concentration requirements for the BWST and core flo;dir.g tanks.
There are no such limits for the BAMT, nor are any necessary.
The BAMT is utilized for batch mixing of boric acid, with an operator in attendance.
Therefore level instrumentation is not essential. The tank is equipped with an agitator for mixing and electric heaters to assure I
solubility of the boric acid.
However, even if the temperature was not I
maintair.ed at a level high enough to maintain solubility, the resulting crystallization would not affect the remainder of the chemical addition system.
Because the level and temperature instrumentation on the BAMT serve no safety function and because the tank is not required to function during accident conditions, the proposed deletion of these surveillance require-ments is acceptable.
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. 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 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 assur:nce 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 compl.iance 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:
February 18, 1977 i
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