ML17053D735
| ML17053D735 | |
| Person / Time | |
|---|---|
| Site: | Nine Mile Point  |
| Issue date: | 05/04/1983 |
| From: | Office of Nuclear Reactor Regulation |
| To: | |
| Shared Package | |
| ML17053D734 | List: |
| References | |
| NUDOCS 8305170056 | |
| Download: ML17053D735 (4) | |
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'UNITED STATES
'UCLEAR REGULATORY COMMISSION WASHINGTON, D. C. 20555 SAFETY 'EVRLUATION:BY. THE OFFICE OF NUCLEAR REACTOR REGULATION SUPPORTINg AMENDMENT NO.
52 TO FACILITY OPERATING LICENSE DPR-63 NIAGARA MOHAWK POWER CORPORATION NINE MILE POINT NUCLEAR STATION
. UNIT NO.
1 DOCKET NO. 50-220 1.0 -.Entnoduction gy ietter dated January ll. 1979 giagara Boliawk Power Corpoiatiori'(othe Tfcehsee')'roposed changes to the Technical'pecifications (TS~of Facility Operating License No.
DPR-63 for the Nine Mile Point Nuclear Station,. Unit l.
The.
revision to the Technical Specification addressed in this Safety Evaluation regarIha change to the test duration for the 'containment intergrated leak rate test.
The other change requested in the'anuary ll, 1979 submittal.is still,under review. and:wil'1. be; addressed,.by a: separate: Safety Evaluation,.
and license amendment.
2".O'valuation,
..The,1iicensee has. proposed toachange.paragraph 4:.3'..3'(5.);.to require..a, minimum test. duration of' hours rather than 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> for the containment integrated leakage rate, test.
The licensee"s bases for the change is that improved'nstrumentation and test methods.now.make it possible-to obtain a
'stati'stically 'acceptable set of data points during a shorter" test period.
The licensee"s new. test. method utilizes, the Bechtel Corporation procedure contained in the Topica1 Report BN-TOP~1 Revision 1 dated November 1, 1972 and titled "Testtng Criteria.'for I'ntegrated Leakage Rate Testing of Primary Contatnment Structures. for. Nucl'ear-Power plants.tt,"
The Bechtel'est procedure.
is a computerized techni'que which obtains sufficient data points in eight hours to meet the required statistical analysis accuracy.
Staff approval of Bechtel Topical Report BN-TOP-. 1, Rev.
1 is contained on page II-32 of NUREG-0390, Vol, 6, No.
2 dated January 20, 1983.
The Topical Report was approved without comment.
8305170056 830504 PDR ADOCIIa 05000220 P
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3.0 Environmental Consideration r
Me have determined that the 'amendment'oes.not.authorize a change in effluent types or total amounts nor an increase in power level and will not result in any significant env'irormental 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 environ-mental impact appraisal need not. be prepared. in connection with the issuance of this amendment.
4.0 Conclusion Me 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 an accident previously evaluated, does not create the possibility of an accident of a type different from any evaluated previously, and does not involve a significant
~. reduction. in.a. margi,n;of -safety,. the.,amendment.
does not involve. a, significant. hazards consideration, (2) there is reasonable assurance that the heal h and safety of the public wil'1 not be endangered by operation in the. proposed'anner, and (3) such activities will be conducted in compliance. with the, Commission's regulations and the.
issuance of'his amendment will. not.be immical to"the.common".-
defense- =and security or to the health and safety of the public.
Oate:
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. 1983 Principal Contributor.'Robert A. Hermanr.
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