ML20212F149

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Forwards Safety Evaluation Accepting Util 860915 & 1110 Submittals in Support of ECCS Evaluation Model Mods Re Axial Power Shape Issue,Phase I,For Cycle 10 Operation,Per 10CFR50,App K.Phase I Complete
ML20212F149
Person / Time
Site: Maine Yankee
Issue date: 01/06/1987
From: Sears P
Office of Nuclear Reactor Regulation
To: Randazza J
Maine Yankee
Shared Package
ML20212F155 List:
References
NUDOCS 8701090512
Download: ML20212F149 (2)


Text

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January 6, 1987 Distribution Docket No. 50-309 7' Docket File-7~~7 ACRS(10)

NRC/ Local"PDR^'"

PKreutzer PBD-8 Reading PSears FMiraglia NThompson BGrimes JLauben Mr. J. B. Randazza JPartlow RJones Executive Vice President EJordan Maine Yankee Atomic Power Company Gray File 3.4a 83 Edison Drive Augusta, Maine 04336

Dear Mr. Randazza:

SUBJECT:

ECCS EVALUATION MODEL MODIFICATIONS RELATED TO AXIAL POWER SHAPE ISSUE, PHASE I We have reviewed your September 15 and November 10, 19E6 submittals in support of Paine Yankee operation during Cycle 10. The purpose of these submittals was to describe modifications to the Maine Yankee ECCS large break evaluation model. The modifications addressed in this Safety Evaluation are designated

" Phase I" and are applicable to the proposed ECCS analysis scheduled for sub-mittal in support of operation during the first half of Cycle 10.

Further

. modifications will be submitted at a later date (Phase II) which will be applicable to a LOCA reanalysis for the balance of Cycle 10.

Based on the enclosed safety evaluation, we find that the proposed modifications are acceptable and in compliance with Appendix K to 10 CFR Part 50.

This completes Phase I of our effort.

/s/

Patrick M. Sears, Project Manager PWR Project Directorate #8 l

Division of PWR Licensing-B

Enclosure:

As stated cc w/ enclosure:

See next page MS PBD-4:

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Maine Yankee Atomic Power Company Maine Yankee Atomic Power Station cc:

Charles E. Monty, President Mr. P. L. Anderson, Project Manage'r 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 Fead 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 Comission 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 i

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