ML20196F223

Requests Assurance That Util Addresss Generic Ltr 88-17 Re Loss of DHR During Nonpower Operation

ML20196F223
Person / Time
Site:	Maine Yankee
Issue date:	12/02/1988
From:	Murley T Office of Nuclear Reactor Regulation
To:	Randazza J Maine Yankee
References
GL-88-17, NUDOCS 8812120231
Download: ML20196F223 (2)

Text

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Docket No. 50-309 Mr. John B. Randazza, President Maine Yankee Atomic Power Company 83 Edison Drive Augusta Maine 04336

SUBJECT:

LOSS OF DECAY HEAT REMOVAL We have just issued Generic Letter 88-17 which addresses loss of decay heat removal (DHR) during nonpower operation.

This letter was issued because of the potential serious consequence of loss of shutdown cooling concurrent with significant core decay heat. Further, it is our belief that the industry as a whole has not aggressively responded to resolve the concern following its identification in ou. earlier Generic Letter 87-12. In particular, the industry's response to the Generic Letter 87-12 war deficient in the areas of (1) prevention of accident initiation (2) mitiga.

tion of accidents before they potentially progress to core damage, and (3) control of radioactive material if a core damage accident should occur.

Generic Letter 88 17 prescribes expeditious actions which should immediately ease the concern; and parallel, but longer term, programmed enhancements which effectively address the root cause of the problems and permit greater flexi.

bility in operation.

We consider this issue to be of high priority and request that you assure that your organization addresses it accordingly.

Sincerely, Origioni signed by IhomaaE.Earley Thomas E. Murley, Director Office of Nuclear Reactor Regulation cc: See next page DISTRIBUTION: .DocketJFile, NRC& Local POPS, SVarga, BBoger, MRushbrook, PSears,OGC,EJordan,BGrimes,ACRS(10),RWessman (Cp

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, Maine Yankee Atomic Power Company Maine Yankee Atomic Power Station ec:

John B. Randazza, 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 Manager - Washington Nuclear Nuclear Engineering and Licensing Operations Maine Yankee Atomic Power Company Combustion Engineering, Inc. 83 Edison Drive 7910 Woodmont Avenue Augusta, Maine 04336 Bethesda, Maryland 20814 John A. Ritsher, Esovire Ropes & Gray 225 Franklin Street Boston, Massachusetts 02110 State Planning Officer Executive Department 189 Statt. Street Augusta, Maine 04330 Dr. E. T. Boulette, Plant Manager Maine Yankee Atomic Power Company P. O. Box 408 Wiscasset, Maine 04578 Regional Administrator, Region I U.S. Nuclear Regulatory Comission 475 Allendale Road King of Prussia, Pennsylvania 19406 First Selectman of Wiseasset Municipal Building U.S. Route 1 Wiscassot, Maine 04578 Mr. Cornelius F. Holden Resident Inspector c/o U.S. Nuclear Regislatory Comission P. O. Box E Wiscasset, Maine 04578 i