ML20059K991

Forwards Safety Evaluation Accepting Methodology Re Statistical Combination of Uncertainties for RPS Setpoints

ML20059K991
Person / Time
Site:	Maine Yankee
Issue date:	09/20/1990
From:	Leeds E Office of Nuclear Reactor Regulation
To:	Frizzle C Maine Yankee
Shared Package
ML20059K996	List: ML20059K991 ML20059K999
References
TAC-67931, NUDOCS 9009260017
Download: ML20059K991 (2)

Text

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U Docket No. 50-309.

September 20, 1990

~ Mr. C. D. Frizzle, President Maine' Yankee Atomic Power Company 83 Edison Drive Augusta; Maine 7.04336

SUBJECT:

" STATISTICAL COMBINATION OE UNCERTAINTIES METHODOLOGY FOR MAINE-YANKEE OPERATING LIMITS ~(TAC.NO. 67931)

On April 19, 1988, you submitted Volumes 1 and 2 of the report entitled " Maine

Yankee'RPS-Setpoint Methodology.-Using Statistical Combination of Uncertainties"-

for the staff's review. The report describes an alternate method of statistically ~

combining the uncertainties applicable to the determination of operating limits.

for the protection of the fuel from experiencing' centerline melting and Departure

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_from_ Nucleate Boiling.

-The staff has ' completed its review of your report and found the metho' ology-d acceptable:for use.- Enclosed is the staff's safety evaluation.

Sincerely, Original signed by:

1 Eric J. Leeds Project Manager Project Directorate 1-3 Division of Reactor Projects.--I/II Office of Nuclear Reactor Regulation-

Enclosures:

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' 1. ' Safety Evaluation (cc w/ enclosures:

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I Mr. C. D. Frizzle Maine Yankee CC' Mr. Charles B. Brinkman Mr. G. D. Whittier, Manager Manager - Washington Nuclear Nuclear Engineering and Licensing Operations-Maine Yankee Atomic Power Company Combustion Engineering, Inc.

83 Edison Drive 12300 Twinbrook Parkway, Suite 330 Augusta, Maine 04336-Rockville, Maryland 20852 t

Mr. Robert W. Blackmore John A. Ritsher, Esquire Plant Manager Ropes &. Gray Maine Yankee Atomic Power Company 225 Franklin Street P.O. Box 408 i

Boston, Massachusetts 02110 Wiscasset, Maine 04570 State Planning Officer Executive Department 189 State Street Augusta, Maine 04330 Dr. E. T. Boulette Vice President - Operations Maine Yankee Atomic Power Company

I P. 0.-Box 408 Wiscasset, Maine 04578

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Regional Administrator, Region I U.S. Nuclear Regulatory Connission 475 Allendale Road King of Prussia, Peansylvania 19406 i

First Selectman of Wiscasset Municipal Building U.S. Route 1 Wiscasset, Maine 04578 l

Mr. Charles S. Marschall Resident Inspector Maine Yankee Atomic Power Station U.S~.- Nuclear Regulatory Connission P. O. Box E

-Wiscasset, Maine 04578 Mr. -P. L. Anderson, Project Manager

. Yankee Atomic Electric Company l

580 Main Street L

Bolton, Massachusetts 01740-1398 l

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