ML20214J825

Forwards SER Supporting Util 860121 Submittal of Info Re Matl Properties & Fast Neutron Fluence of Reactor Pressure Vessel Matls for Protection Against Pts,Per 10CFR50.61.Util Meets Requirements Through Oct 2008

ML20214J825
Person / Time
Site:	Maine Yankee
Issue date:	11/20/1986
From:	Thadani A Office of Nuclear Reactor Regulation
To:	Randazza J Maine Yankee
Shared Package
ML20214J827	List: ML20214J825 ML20214J829
References
REF-GTECI-A-49, REF-GTECI-RV, TASK-A-49, TASK-OR NUDOCS 8612010489
Download: ML20214J825 (2)

Text

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N3vember 20, 1986 1M8 O/tg Docket No. 50-309 DISTRIBrTON A cket P'e_] BGrimes mu, rvH JPartlow L PDR NThompson Mr. J. B. Randazza PBDf8 Rdg PKreutzer Executive Vice President FMiraglia PSears Maine Yankee Atomic Power Company OGC Gray File 83 Edison Drive ACRS-10 PRandall Augusta, Maine 04336 EJordan LLois

SUBJECT:

MATERIAL PROPERTIES AND FAST NEUTRON FLUENCE FOR FRACTURE TOUGHNESS REQUIREMENTS FOR PROTECTION AGAINST PRESSURIZED THERMAL SHOCK EVENTS (10CFR50.61)

By letter dated January 21,.1986, you submitted information on the material properties and the fast neutron fluence of the reactor pressure vessel in compliance with the requirements of 10 CFR 50.61. The staff has reviewed the material properties and chemical composition and found them acceptable.

The staff has also reviewed the fast neutron fluence on the inside surface of the pressure vessel in view of the material properties. We find that the Maine Yankee pressure vessel meets the material toughness requirements of 10 CFR 50.61 to the end of the current operating license on October 21, 2008.

However, we request that you submit periodic future re-evaluations of the RT and the corresponding comparison with the predictions of Reference 1.

Subb3submittals could be made at the same time as the Pressure-Temperature operating limits which are required by 10 CFR 50 Appendix G.

Our Safety Evaluation is Enclosed.

. This request for information was approved by OMB under clearance number 3150-0011 which expires December 30, 1986. Comments on burden and duplication

may be directed to the Office of Management and Budget, Reports Management, i Room 3208, New Executive Office Building, Washington, D.C. 20503.

Sincerely.

Originar signed,by,C Ashot Thtdani' Ashok C. Thadani, Director PWR Project Directorate #8 Division of PWR Licensing-B

Enclosure:

, Safety Evaluation cc w/ enclosure:

See next page PBDf8 #8 PBDf8 PMr 11/g/86 PSears;cf 11/3c/86 AThadgni 11/7V86

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8612010489 861120 PDR ADOCK 05000309 P PDR

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i Mr. J. B. Randazza Maine Yankee Atomic Power Company Maine Yankee Atomic Power Station cc:

Charles E. Monty, President Mr. P. L. Anderson, Project Manager Maine Yankee Atomic Power Company Yankee Atomic Electric Company 83 Edison Drive 1671 Worchester Road Augusta, Maine 04336 Framingham, Massachusetts 07101 Mr. Charles B. Brinkman Mr. G. D. Whittier Manager - Washington Nuclear Licensing Section Head Operations Maine Yankee Atomic Power Company Combustion Engineering, Inc. 83 Edison Drive 7910 Woodmont Avenue Augusta, Maine 04336 Bethesda, Maryland 20814 John A. Ritsher, Esquire Ropes & Gray 225 Franklin Street Boston, Massachusetts 02110 State Planning Officer Executive Department 189 State Street Augusta, Maine 04330 Mr. John H. Garrity, Plant Manager Maine Yankee Atomic Power Company P. O. Box 408 Wiscasset, Maine 04578 Regional Administrator, Region I U.S. Nuclear Regulatory Commission 631 Park Avenue King of Prussia, Pennsylvania 19406 First Selectman of Wiscasset Municipal Building U.S. Route 1 Wiscasset, Maine 04578 Mr. Cornelius F. Holden Resident Inspector c/o U.S. Nuclear Regulatory Commission P. O. Box E Wiscasset, Maine 04578

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