ML20132F395

Forwards Safety Evaluation of 850211 Response to Bulletins & Orders Re Environ Qualification of Electrical Equipment Important to Safety.Qualification Program Complies w/10CFR50.49

ML20132F395
Person / Time
Site:	Millstone
Issue date:	07/30/1985
From:	Zwolinski J Office of Nuclear Reactor Regulation
To:	Opeka J NORTHEAST NUCLEAR ENERGY CO.
Shared Package
ML20132F398	List: ML20132F395 ML20132F427
References
LSO5-85-07-043, LSO5-85-7-43, NUDOCS 8508020255
Download: ML20132F395 (2)

Text

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> - July 30, 1985 Docket No. 50-245 DISTRIBUTION LS05-85-07-043 Docket File OELD NRC PDR EJordan L PDR BGrimes Mr. J. F. Opeka, Senior Vice President CJamerson PShemanski Nuclear Engineering and Operations JShea JKudrick Northeast Nuclear Energy Company JPartlow RHouston Post Office Box 270 ACRS (10)

Hartford, Connecticut 06141 GHolahan HThompson

SUBJECT:

ENVIRONMENTAL QUALIFICATION OF ELECTRIC EQUIPMENT IMPORTANT TO SAFETY Re: Millstone Nuclear Power Station, Unit No. 1 We have completed our evaluation of your February 11, 1985 and earlier submittals responsive to the bulletins and orders noted in our safety evaluation.

On the basis of the information you have provided, we have concluded that the Millstone Unit 1 electrical equipment environmental qualification program complies with the requirements of 10 CFR 50.49, that continued operation until completion of your environmental qualification program will not present undue risk to the public health and safety, and that your proposed resolutions for each of the environmental qualification deficiencies identified in our December 13, 1982 safety evaluation are acceptable.

However, the calculated containment pressure / temperature profiles remained as a significant open items. In this regard, you have indicated (your February 11, 1985 submittal) your intention to continue efforts, if necessary, to demonstrate conclusively the adequacy of the pressure / temperature profiles you have used for environmental qualification of safety-related electrical equipment. By [[letter::A04590, Responds to NRC 850111 Request for Addl Info Re NUREG-0737, TMI Item II.D.1 Concerning Performance Testing of Relief & Safety Valves,Selection of Transients & Valve Inlet Conditions,Valve Operability & thermal-hydraulic Analysis|letter dated June 11, 1985]], you responded to our request for further information relating to containment pressure / temperature accident profiles and schedular commitments. We find your response acceptable.

The staff's safety evaluation is presented as an enclosure to this letter.

Sincerely. -

850 Oris@WN pon%M 8M% v*) 9 PDR John A. Zwolinski, Chief 9 e Operating Reactors Branch No. 5 OD, Division of Licensing d

Enclosure:

Safety Evaluation g

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Mr. John F. Opeka Millstone Nuclear Power Station Northeast Nuclear Energy Company ,

Unit No. I cc:

Cereld Garfield, Escuire Kevin McCarthy, Director Day, Berry & Howard Radiation Control Unit Counselors at Law Department of Environmental City Place Protection Hartford, Connecticut 06103-3499 State Office Building Hartford, Connecticut 06106 Edward J. Mroczka Vice President, Nuclear Operations Northeast Ut.ilities Service Company Post Office Poy 270 Hartford, Connecticut 06141-0?70 State of Connecticut Office of Policy and Paragement ATTN: Under Secretary Energy Division 80 Washincton Street Hartford, Connecticut 06106 Regional Administrator, Region i U.S. Nuclear Regulatory Commission 631 Park Avenue King of Prussia, Pennsylvania 19406 Northeast Nuclear Energy Company ATTN: Superintendent Millstone Nuclear Power Station P. O. Box 128 Waterford, Connecticut 06358 Resident Inspector c/o U.S. NRC Millstone Nuclear Power Station P. O. Box 811 Niantic, Connecticut 06357 First Selectman of the Town of Faterford Hall of Records 200 Boston Post Road Waterford, Connecticut 06385

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