ML20126M232

Safety Evaluation Supporting Amend 11 to License R-73

ML20126M232
Person / Time
Site:	05000139
Issue date:	06/04/1981
From:	Office of Nuclear Reactor Regulation
To:
Shared Package
ML20126M225	List: ML20126M223 ML20126M227 ML20126M232
References
NUDOCS 8106150019
Download: ML20126M232 (2)

Text

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p* *c%q% UNITED STATES

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NUCLEAR REGULATORY COMMISSION

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SAFETY EVALUATION SY THE CFFICE CF NUCLEAR REACTOR REGULATION SUPPORTING AMEN 0 MENT NO. 11 TO LICENSE NO. R-73 UNIVERSITY OF WASHINGTON DOCKET NO.: 50-139 Introduction Sy'1etter dated January 16, 1980, University of Washington (the if censee) filed a request for amendment to Facility Operating License No. R-73 for the Argonaut-type- research reactor. The present license permits the possession, and use of up to 7.5 kilograms of contained uraniun 235 for use in connecticn with the operation of the reactor. The proposed amendment reduces the quantity of special nuclear material for possession and use to 4.4 kilograms cf contained uranium 235. The pecpesed amendment authori:es storage of 3.5 kilograms of contained uranium 235 at an off-site location.

Evaluation

The current possession limit of 7.5 kilograns of contained uranium 235 is higher than necessary at the present time, since the license has reduced the amount of uranium 235 possessed by transfer or shipment to an off-site storage location at a Department of. Energy f acility. Sjnce the crocosed pcssession limit is adeouate for current operations, the higner limit is not needed. 5ecause this amendment reduces the possession Ifmit for special nuclear material and does not involve the operation of the reactor in any manner different from that previously reviewed, we have concluded tnat this amendment is administrative in nature.

Conclusions 1

We have concluded, based on the considerations above, that:

(1) the amendment does not involve a significant increase in' the probability or consequence of accidents previously considered, does not involve a significant decrease in a safety margin, and, therefore does not involve a significant hazards consideration; 1

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2-YS (2) there is reasonable assurance that the health and safety of the -

public will not be endangered by this action; and (3) . such activities will be conducted in compliance with the

. Comission'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.

We have detemined that this amendment will not result in any significant environmental impact and that it does not constitute a major Commission action significantly affecting the quality of the human environment.

We have also determined that this action is not one of those covered by 10 CFR 51.5(a) or (b). Having made these deteminations, we have further concluded that, pursuant to 10 CFR 51'.5(d)(4), an environmental impact and negative declaration need not be prepared in connection with issuance of this amendment.

Cated: dune ~2, 1941 t

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