ML20207N785

Advises That & FSAR Section 5.3 Re PTS Acceptable.Plant Satisfies Fracture Toughness Requirements for Protection Against Pts.Safety Evaluation Encl

ML20207N785
Person / Time
Site:	Millstone
Issue date:	10/13/1988
From:	Jaffe D Office of Nuclear Reactor Regulation
To:	Mroczka E NORTHEAST NUCLEAR ENERGY CO.
Shared Package
ML20207N786	List: ML20207N785 ML20207N791
References
TAC-68366, NUDOCS 8810190358
Download: ML20207N785 (2)

Text

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OCT II Decket No. 50-423

[. DISTRIBUTION BoeTeT.Tiri~ DJaffe Mr. Edward J. Mroczka NRC & LPDRs SVarga Senior Vice President Branch Files BBoger Nuclear Engineering and Operations EJordan Llois Northeast Nuclear Energy Company 4Part4cw- BCs % M150GC-Beth P.O. Box 270 ACRS(10)

Hartford, Connecticut 06141-0270 SNorris

SUBJECT:

PRESSURIZED THERMAL SH0CK, 10 CFR 50.61 (TAC #60366) f We have completed our review of your submittal for Millstone Unit 3, dated i Janua ry 23, 1986 and Section 5.3 of the Millstone Unit 3 Final Safety  !

/nalysis Report (FSAR) concerning Pressurized Themal Shock.

Based upon our evaluation, we find that the estimated value of the fast i neutron fluence to the pressure vessel to have conservative error margins and  ;

thus is acceptable. The value of the RT based on this fluence estimate is  !

lessthanthe10CFR50.61screeningcri@ionandisacceptable. In I addition, the controlling raterial has been properly identified. The  ;

justifications given for copper and nickel contents and the initial RT l 4 tcceptable. The margin has seen derived from consideration of the basNT forare '

these values, following the PTS Rule Section 50.61 of 10 CFR Part 50.  ;

We request that you submit periodic future reevaluations of the RT and the  ;

corresponding coniparison with the predictions contained in ycur Pts i January 23, 1086 submittal and Section 5.3 of the FSAR. Such submittals could be r.ade at the sarre tirte as the Pressure-Terrperature operating limits which are required by 10 CFR 50 Appendix G. j The staff concludes, based on the considerations discussed above, that the f Millstone Unit 3 plant satisfies the fracture tcughness requirentents for r protection against pressurized themal shock. t The reporting and/or recordkeeping requirerents contained in this letter i i affect fewer than 10 respondents; therefore, CMB clearance is not required  !

under P.L.96-511. l l

Sincerely, i

/5/

David H. Jaffe, Project Manager t

, Coah Project Directorate I-4 Division of Reactor Projects !/I!

l l3 Enclosure I

i oN- As stated  :

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cc w/ enclosure:

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Pr. E. J. Mroczka Northeast Nuclear Energy Company Millstone Nuclear Power Station Unit No. 3 cc:

Gerald Garfield, Esquire R. M. Kacich, Manager Day, Berry and Howard Counselors at Law Generation Facilities Licensing City Place Northeast Utilities Service Company Hartford, Connecticut 06103-3499 Post Office Box 270 Hartford, Connecticut 06141-0270 W. D. Romberg, Vice President D. O. Nordquist Nuclear Operations Vanager of Quality Assurance Northeast Utilities Service Company Northeast Nuclear Energy Company Post Office Box 270 Post Office. Box 270 Hartford, Connecticut 06141-0270 Hartford, Connecticut 06141-0270 l Kevin McCarthy, Director Regional Administrator Radiation Control Unit Region !

Departrent of Environmental Protection U. S. Nuclear Regulatory Comission State Office Building 475 Allendale Road Hartford, Connecticut 06106 King of Prussia, Pennsylvania 19406 Bradford S. Chase Under Secretary First Selectmen Energy Division Town of Waterford Office of Policy and Panagerrent Hall of Records 80 Washington Street 200 Boston Post Road Hartford, Connecticut 06106 Waterford, Connecticut 063P,5 i S. E. Scace, Station Superintendent W. J. Raynond, Resident inspector Millstone Nuclear Power Station Millstone Nuclear Power Station Northeast Nuclear Energy Company c/o U. S. Nuclear Regulatory Comission Post Office Box 128 Waterford, Connecticut 05385 Post Office Box 811

., Niantic, Connecticut 06357

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C. H. Clement, Unit Superintendent M. R. Scully Executive Director Millstone Unit No. 3 Connecticut Municipal Electric  !

Northeast Nuclear Energy Company Energy Cooperative '

Post Office Box 128 268 Thomas Road Waterford, Connecticut 06385 Groton, Connecticut 06340 Ms. Jane Spector Michael L. Jones, Manager  ;

Federal Energ Regulatory Consnission Pro.iect Management Department 82S N. Capito Street, M.E. Massachusetts Municipal Wholesale Room 860BC Electric Company l'

Washington, D.C. 204?6 Post Office Box 426 Ludlow Massachusetts 01056 Burlington Electric Department c/o Robert E. Fletchir. Esq.

271 South Union Street '

Burlington, Vennent 05402 '

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