ML20071M093

Discusses Possible Imposition of Augmented Leak Detection Requirements for RCS Due to Discovery of Unacceptable Pipe Flaw Indications in Recirculation & RHR Sys.Util Commitments to Incorporate NUREG-0313,Rev 1,Section IV.B.1.a.2

ML20071M093
Person / Time
Site:	Hatch
Issue date:	05/25/1983
From:	Beckham J GEORGIA POWER CO.
To:	Stolz J Office of Nuclear Reactor Regulation
Shared Package
ML20071M062	List: ML20071M059 ML20071M081 ML20071M093 ML20071M109
References
RTR-NUREG-0313, RTR-NUREG-313 NED-83-322, TAC-51407, NUDOCS 8305310092
Download: ML20071M093 (2)

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• Georgis Power Corncany F 333 p,,omont 4yenu. ATTACHMENT 4

,2,ru ee, Atlant:, Geosa 30308 .

Telephone 404 526 7020 *- -

Maihng-Adcress. A Post Omce Ocv :545 A!'.anta, Gearp 30302 h Georgia Power J. T. Beckham, Jr. the southern eectic system Vce President and Geaeral Maaager Nuc: ear Generaten NED-83-322 May 25, 1983 Director of Nuclear Reactor Regulation -

Attention: Mr. John F. Stolz, Chief -

Operating Reactors Branch No. 4 Division of Licensing U. S. Nuclear Regulatory Commission Washington, D. C. 20555 NRC DOCKET 50-366 OPERATING LICENSE WF-5 EDWIN I. HATCH NUCLEAR PLANT UNIT 2 AUGENTED RCS LEAK DETECTION Gentlemen:

Georgia Power Company (GPC) has been requested by the NRC to impose augmented leak detection requirer 6ents for the reactor coolant system (RCS).

These augmented requirements are a result of the discovery of unacceptable pipe flaw indications in the Recirculation and RHR systems. The new I

requirements incorporate the surveillance frequencies suggested by NUREG-0313 Rev. 1,Section IV.B.l.a.2.

Therefore, GPC commits, beginning at the time of unit startup following the current refueling / maintenance outage, to the following requirements:

1. Grab samples of the containment atmosphere, as discussed in the ACTION statement of Technical Specification 3.4.3.1, (one leakage detection system inoperable) will be obtained and analyzed once per I

4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br />, instead of 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> as presently required.

2. Primary system gaseous and particulate system channel checks (Technical Specification 4.4.3.la) will be performed once every 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br />, instead of 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> as presently required.

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3. Actions required by Technical Specification 3.4.3.2d will be implemented if reactor coolant leakage increases by 2 gpm unidentified leakage within any 24-hour period instead of within

. any 4-hour period as presently required. -

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Georgia Power A Director of Nuclear Reactor Regulation Attention: Mr. John F. Stolz, Chief Operating Reactors Brar.ch No. 4 May 25, 1983 Page Two

4. With greater than 5 gpm unidentified RCS leakage, or 25 gpm total RCS leakage averaged over any 24-hour period, (Tt.chnical Specification 3.4.3.2 Action b.) the leakage rate will be reduced to within these limits within 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br />, or the provisions of this ACTION statement will apply. Presently, 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> is allowed to reduce leakage rates. .

5. Monitoring of primary contalment floor drain sump and equipment sump levels will take place once per 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br />, instead of once per 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br />, as presently required (Technical Specification 4.4.3.2a).

6. Monitoring of primary containment atmospheric particulate and I gaseous radioactivity levels will take place once per 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br />, instead of once per 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br />, as presently required (Technical Specification 4.4.3.2b).

Each of these requirements is a conservative change to ensure continued safe operation following piping repairs. None of these changes constitutes an unreviewed safety question.

Please contact this office if further information is required.

Very truly yours, h

J. T. Beckham, Jr.

REB /mb xc: H. C. Nix, Jr.

J. P. O'Reilly (NRC- Region II)

Senior Resident Inspector L