ML20154B474

Forwards Request for Addl Info Re Util Vessel Support Embrittlement Issue within 60 Days of Ltr Receipt.Inclusion of Info in Next Update of FSAR in Chapter 200 or 201 Also Requested

ML20154B474
Person / Time
Site:	Yankee Rowe
Issue date:	05/09/1988
From:	Fairtile M Office of Nuclear Reactor Regulation
To:	Papanic G YANKEE ATOMIC ELECTRIC CO.
References
NUDOCS 8805170205
Download: ML20154B474 (3)

Text

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6 May 9, 1988 Docket No.50-029 Mr. George Papanic, Jr.

Senior Project Eligineer - Licensing Yankee Atomic Electric Company 1671 Worcester Road Framingham, Massachusetts 01701

Dear Mr. Papanic:

Ry letter dated September 15, 1987 the Yankee Atomic Electric Ccmpany requested an extension to the Yankee Nuclear Power Station Operating License expiration date. That action is under current NRC review. However, in connection with extending the years of operation of the plant we are concerned with embritttlement of the reactor vessel supports. We have identified some information we need to evaluate this concern.

Kindly respond to the enclosed request for additional information within 60 days of receipt of this letter. We also request that this information be included in the next update of the FSAR in Chapter 200 or 201.

The reporting and/or recordkeeping requirements contained in this letter affect fewer than ten respondents; therefore, OMB clearance is not required ur. der P.L.96-511.

Sincerely, Original signed by:

Morton B. Fairtile, Project Manager Project Directorate I.3 Division of Reactor Projects, I/II

Enclosure:

Request for Information cc w/ enclosure:

See next page Distribution:

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-i REOUEST FOR ADDITIONAL INFORMATION Yankee Rowe Vessel Support Embrittlement issue a) Provide a sketch / isometric of the reactor vessel supports, b) Identify the support system designer, c) Report the calcu.3ted maximum support design stresses and their locatior relative to the core beltline, d)- Indicate whether maxinum design stresses are low enough to preclude brittle fracture. Provide basis.

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Mr.' George Papanic, Jr.

Yankee Atomic Electric Company ~ Yankee Nuclear Power Station cc:

Mr. James E. Tribble, President Mr. George Papanic, Jr.

Yankee Atomic Electric Company Senior Project Engineer-Licensing 1671 Worcester Road Yankee Atomic Electric Company Framingham, Massachusetts 01701 1671 Worcester Road Framingham, Massachusetts 01701 Thomas Dignan, Esquire Ropes and Gray 225 Franklin Street Boston, Massachusetts 02110 Mr. N. H. St. Laurent  :

Plant Superintendent Yankee Atomic Electric Company Star Route Rowe, Massachusetts 01367 Chai rman Board of Selectmen Town of Rowe Rowe, Massachusetts 01367 Resident Inspector

., Yankee Nuclear Power Station c/o U.S. NRC Post Office Box 28 .

Monroe Bridge, Massachusetts 01350 Regional Administrator, Region I U.S. Nuclear Regulatory Commission 475 Allendale Road  !

King of Prussia, Pennsylvania 19406 Robert M. Hallisey, Director Radiation Control Program Massachusetts Department of Public Health 150 Tremont Street 7th Floor Boston, Massachusetts 02111 t'

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