ML20043G415

Forwards Request for Addl Re Response to Generic Ltr 88-11, Radiation Embrittlement of Reactor Vessel Matls

ML20043G415
Person / Time
Site:	Millstone
Issue date:	06/12/1990
From:	Vissing G Office of Nuclear Reactor Regulation
To:	Mroczka E CONNECTICUT YANKEE ATOMIC POWER CO.
References
GL-88-11, TAC-71515, NUDOCS 9006200259
Download: ML20043G415 (3)

Text

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. June 12, 1990 E'

Docket No. 50-336 i

Mr. Edward J. Mroczka Senior Vice President Nuclear Engineering and Operations I

Connecticut Yankee Atomic Power Company Northeast Nuclear Energy Company P. O. Box 270 Hartford, Connecticut 06141-0270

SUBJECT:

REQUEST FOR ADDITIONAL INFORMATION -- RESPONSE TO GENERIC LETTER 88-11, RADIATION EMBRITTLEMENT OF REACTOR VESSEL MATERIALS, MILLSTONE 2 (TAC 71515)

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We are continuing our review of your response of November 1,1988, to Generic Letter 88-11, Radiation Embrittlement of Reactor Vessel Materials, for Millstone 2 and have a need for additional information. The enclosed Request For Additional Information identifies the needed information. We request your response within 45 days from receipt of this letter, The reporting and/or recordkeeping requirements of this letter affect fewer than 10 respondents; therefore, OMB clearance is not required under P.L.

c 96-511.

Sincerely,

/s/

1 Guy S. Vissing, Senior Project Manager Project Directorate I-4 Division of Reactor Projects - I/II i

Office of Nuclear Reactor Regulation

Enclosure:

As stated cc w/ enclosure:

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Mr. Edward J. Mroczka Millstone Nuclear Power Station Northeast Nuclear Energy Company Unit No. 2 CC:

Gerald Garfield, Esquire R. M. Kacich, Manager Day, Berry and Howerd Generation Facilities Licensing.

Counselors at Law Northeast Utilities Service Company City Place Post Office Box 270 Hartford, Connecticut 06103-3499 Hartford, Connecticut 06141-0270 W. D. Romberg, Vice President D. O. Nordquist Nuclear Operations Director of Quality Services Northeast Utilities Service C&apany Northeast Utilities Service Company Post Office Box 270 Post Office Box 270 Hartford, Connecticut 06141-0270 Hartford, Connecticut 06141-0270 Kevin McCarthy, Director Regional Administrator Radiation Control Unit Region I Department of Environmental Protection U. S. Nuclear Regulatory Commission 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 Management Hall of Records 80 Washington Street 200 Boston Post Road Hartford, Connecticut 06106 Waterford, Connecticut 06385 S. E. Scace, Nuclear Station Director W. J. Raymond, Resident Inspector Millstone Nuclear Power Station Millstone Nuclear Power Station Northeast Nuclear Energy Company c/o U. S. Nuclear Regulatory Commission Post Office Box 128 Post Office Box 811 Waterford, Connecticut 06385 Niantic, Connecticut 06357 J. S. Keenan, Nuclear Unit Director Cha'rles Brinkman, Manager Millstone Unit No. 2 Washington Nuclear Operations Northeast Nuclear Energy Company C-E Power Systems Post Office Box 128 Combustion Engineering, Inc.

Waterford.-Connecticut 06385 12300 Twinbrook Pkwy Suite 330 Rockville, Maryland 20852 I

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REQUEST FOR ADDITIONAL INFORMATION CONCERNING RESPONSE T0 GENERIC LETTER 88-11 MILLSTONE NUCLEAR POWER STATION, UNIT NO. 2 NORTHEAST NUCLEAR ENERGY COMPANY DOCKET NO. 50-366 1.

Please provide the Charpy impact upper shelf energy (USE) values for the welds.

2.

Please provide the EFPY and the 32 EFPY fluence values for the following materials:

Intermediate shell plate C505-1 Lower shell plate C506-2, and t

Weld 3-203 l

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