ML20245J240

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Discusses Suppl to Phase I, Re Safety Evaluation of Control of Heavy Loads at Nuclear Power Plant. NRC Concurs W/Proposed Change in Definition of Hot Spent Fuel
ML20245J240
Person / Time
Site: Calvert Cliffs  Constellation icon.png
Issue date: 08/07/1989
From: Mcneil S
Office of Nuclear Reactor Regulation
To: Creel G
BALTIMORE GAS & ELECTRIC CO.
References
07978, 07979, 7978, 7979, NUDOCS 8908170589
Download: ML20245J240 (3)


Text

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. .m . f August 7, 1989 Docket Nos. 50-317 and 50-318 Mr. G. C. Creel Vice President - Nuclear Energy.

Baltimore Gas and Electric Company i Calvert Cliffs Nuclear Power Plant MD Rtes. 2 & 4 P. O. Box 1535 Lusby, Maryland 20657

Dear Mr. Creel:

SUBJECT:

SUPPLEMENT TO " PHASE I" SAFETY EVALUATION OF THE CONTROL OF HEAVY LOADS - MPA C-10 (UNIT 1 TAC 07978; UNIT 2 TAC 07979)

On March 27, 1983, the NRC staff issued a Safety Evaluation concluding that j your " Phase I" response to NUREG-0612. " Control of Heavy Loads at Nuclear ,

Power Plant," for the Calvert Cliffs Nuclear Power Plant, Units 1 and 2, was satisfactory.

However, your response letter, dated March 1,1982, acceptably deviated from the NRC NUREG-0612 recommendation for ensuring compliance with heavy load restrictions over " hot" spent fuel. NUREG-0612 provides that fuel which has not decayed for the'necessary decay time is " hot" spent fuel. The required decay time was evaluated to be 42 days after shutdown or more.

Your_ response defined " hot" spent fuel as the group of irradiated fuel assemblies removed from the core within 45 days of the previous refueling.

Consequently, the fuel located in the reactor vessels would be considered

" hot" spent fuel until 45 days after it was discharged, no matter how long the unit was shutdown prior to the fuel discharge.

Your definition has led to the imposition of unnecessary heavy loads handling restrictions that could arbitrarily hamper refueling operations. -Consequently,

'in your letter of July 26, 1989, you proposed modifying the BG&E definition of

" hot" spent fuel to conform with the NRC guidance in NUREG-0612 by defining

" hot" spent fuel as any fuel that has resided in the core of a unit where that unit has been-shutdown within the last 45 days.

The NRC staff has evaluated the impact of this proposed change in the definition of " hot" spent fuel upon the acceptability of your program to control heavy loads at Calvert Cliffs. As this new definition is consistent with the guidance provided in NUREG-0612 and as this change should still ensure, for fuel damage events resulting from a heavy loads incident, that offsite doses due to the release of gap activity shall be less than one-fourth 1

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Mr. G. C. Creel -2 August 7, 1989 j

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t of the 10 CFR Part 100 limits, the NRC staff has determined that your " Phase 1" response to NUREG-0612 with the incorporation of the July 26, 1989 letter's definition of " hot" spent fuel remains satisfactory for Calvert Cliffe 1 and

2. Consequent'y, the NRC staff concurs with your proposed change in the definition of " hot" spent fuel.

Sincerely, Scott Alexander McNeil, Project Manager Project Directorate 1-1 Division of. Reactor Projects - I/II Office of Nuclear Reactor Regulation cc: See next page DISTRIBUTION yg

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DATE :8/1/89- :8/M/89 :8/ 7 /89 :8/ 7 /89  :  :  :

OFFICIAL RECORD COPY I

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Mr. G. C. Creel Baltimore Gas f. Electric Company Calvert Cliffs Nuclear Power Plant cc:

Mr. William T. Bowen, President Public Service Comission of Maryland Calvert County Board of Engineering Division Commissioners ATTN: Chief Engineer Prince Frederick, Maryland 20768 231 E. Baltimore Street Baltimore, MD 21202-3486  !

D. A. Brune Esq.

General Counsel l

Baltimore Gas and Electric Company P. O. Box 1475 Baltimore, Maryland 21203 Mr. Jay E. Silberg, Esq.

)

Shaw, Pittman, Potts and Trowbridge  ;

1800 M Street, NW )

Washington, DC 20036 )

i Mr. W. J. Lippold, General Supervisor l Technical Services Engineering Calvert Cliffs Nuclear Power Plant MD Rts 2 & 4 P. O. Box 1535 .

Lusby, Maryland 20657 )

l Resident Inspector j l c/o U.S. Nuclear Regulatory Comission l P. O. Box 437 Lusby, Maryland 20657 i Department of Natural Resources j Energy Administration, Power Plant ,

Siting Proaram  !

ATTN: Mr. T. Magette i

, Tawes State Office Building '

l Annapolis, Maryland 21204 Regional Administrator, Region I U.S. Nuclear Regulatory Comission 475 Allendale Road King of Prussia, Pennsylvania 19406 l

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