ML20046C677

Forwards Request for Addl Info Re Licensee 920703 Response to GL 92-01.Info Requested within 60 Days of Receipt of Ltr

ML20046C677
Person / Time
Site:	Vermont Yankee File:NorthStar Vermont Yankee icon.png
Issue date:	07/21/1993
From:	Dan Dorman Office of Nuclear Reactor Regulation
To:	Reid D VERMONT YANKEE NUCLEAR POWER CORP.
References
GL-92-01, GL-92-1, TAC-M83521, NUDOCS 9308110347
Download: ML20046C677 (4)

Text

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July 21, 1993 Docket No. A-271 Mr. Donald A. Reid, Vice President Operations Vermont Yankee Nuclear Power Corporation Ferry Road Brattleboro, Vermont 05301

SUBJECT:

REQUEST FOR ADDITIONAL INFORMATION - VERMONT YANKEE RESPONSE TO GENERIC LETTER 92-01, REVISION 1 (TAC NO. M83521)

By letter dated July 3, 1992, Vermont Yankee (VY) submitted its responses to Generic Letter (GL) 92-01. The purpose of GL 92-01 is to obtain information needed to assess compliance with requirements set forth in Appendices G and H to 10 CFR Part 50, and commitments made in response to GL 88-11 regarding reactor vessel structural integrity.

Other regulations requiring compliance are 10 CFR 50.60 and 10 CFR 50.61.

The staff has completed the preliminary review for VY and is transmitting the enclosed request for additional information. The licensee should respond within 60 days of receipt.

The requirements of this letter affect fewer than 10 respondents, and, therefore, are not subject to the Office of Management and Budget review under PL 96-511.

Sincerely,

/S/

Daniel H. Dorman, Project Manager Project Directorate I-3 Division of Reactor Projects - I/II Of' ice of Nuclear Reactor Regulation

Enclosure:

Request for Additional Information cc w/ enclosure:

See next page Distribution:

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July 21, 1993 Docket-No. 50-271 Mr. Donald A. Reid, Vice President Operations Vermont Yankee Nuclear Power Corporation i

Ferry Road Brattleboro, Vermont 05301.

SUBJECT:

REQUEST FOR ADDITIONAL INFORMATION - VERMONT YANKEE RESPONSE TO I

GENERIC LETTER 92-01, REVISION 1 (TAC NO. M83521)

By letter dated July 3,1992, Vermont Yankee (VY) submitted its responses to Generic Letter (GL) 92-01. The purpose of GL 92-01 is to obtain information needed to assess compliance with requirements set forth in Appendices G and H to_10 CFR Part 50, and commitments made in response to GL 88-11 regarding reactor vessel. structural integrity. Other regulations requiring compliance are 10 CFR 50.60 and 10 CFR 50.61.

The staff has completed the preliminary-review for VY and is transmitting-the' i

enclosed request for additional information. The licensee should respond.

. 2 within 60 days of receipt.

The requirements of this letter affect fewer than 10 respondents, and,

}'

therefore, are not subject to the Office of Management and Budget review under PL 96-511.

Sincerely, 85.

4 "

Daniel H. Dorman, Project Manager Project Directorate I-3 Division of Reactor Projects - I/II Office of Nuclear Reactor Regulation

Enclosure:

Request for Additional Information cc w/ enclosure:

See next page i

+

1 1

Mr. Donald A. Reid, Vice President Vermont Yankee Nuclear Power Station Operations cc:

Mr. Jay Thayer, Vice President G. Dana Bisbee, Esq.

Yankee Atomic Electric Company Office of the Attorney General 580 Main Street Environmental Protection Bureau Bolton, Massachusetts 01740-1398 State House Annex 25 Capitol Street Regional Administrator, Region I Concord, New Hampshire 03301-6937 U. S. Nuclear Regulatory Commission i

475 Allendale Road Resident Inspector i

King of Prussia, Pennsylvania 19406 Vermont Yankee Nuclear Fower Station i

U.S. Nuclear Regulatory Commission R. K. Gad, III P. O. Box 176 l

Ropes & Gray Vernon, Vermont 05354 One International Place Boston, Massachusetts 02110-2624 Chief, Safety Unit Office of the Attorney General Mr. Richard P. Sedano, Commissioner One Ashburton Place, 19th Floor Vermont Department of Public Service Boston, Massachusetts 02108 120 State Street, 3rd Floor Montpelier, Vermont 05602 Mr. David Rodham, Director Massachusetts Civil Defense Agency Public Service Board 400 Worcester Rd.

State of Vermont P.O. Box 1496 120 State Street Framingham, Massachusetts 01701-0317 Montpelier, Vermont 05602 ATTN: James Muckerheide Chairman, Board of Selectmen Mr. Raymond N. McCandless Town of Vernon Vermont Division of Occupational Post Office Box 116 and Radiological Health Vernon, Vermont 05354-0116 Administration Building Montpelier, Vermont 05602 Mr. J. P. Pelletier, Vice President Vermont Yankee Nuclear Power Mr. L. A. Tremblay Corporation Senior Licensing Engineer Ferry Road Vermont Yankee Nuclear Power Brattleboro, Vermont 05301 Corporation 580 Main 5treet Bolton, Massachusetts 01740-1398

g ENCLOSURE Recuest for Additional Information Ouestion 2a in G1 92-01 The response to GL 92-01 indicates that the initial USE values for i

all beltline plates, 'except for the surveillance plate, are not known, and "The USE of the beltline welds was determined from Charpy testing performed on a typical production beltline weld."

Either provide the initial Charpy USE for each beltline plate and weld or provide the initial Charpy USE and analysis from plates and welds that were fabricated using the same vendor, fabrication time frame, fabrication process, and material specification to demonstrate that the surveillance plate and the " typical production beltline weld" are representative of beltline plates and welds and all beltline matarials will meet the USE requirements of Appendix G,10 CFR Part 50.

If this cannot be provided, then submit an analysis which demonstrates that lower values of upper-shelf energy will provide margins of safety against fracture equivalent to those required by Appendix G of the ASME Code.

Questions 2b and 3 in GL 92-01 The response does not report initial RT and chemistry data for all beltline materials.

Provide this iniormation and identify the sources.

Using this information, provide a response to Question 3 as stated in GL 92-01.

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