ML20065N032

Responds to Requesting Implementation Schedule for Mods to ECCS Evaluation Models.Mods Will Be Undertaken as Extension of NUREG-0737,Item II.K.3.31.Schedule Will Be Provided 60 Days After NRC Approval of Item II.K.3.30

ML20065N032
Person / Time
Site:	Davis Besse
Issue date:	10/19/1982
From:	Crouse R TOLEDO EDISON CO.
To:	Novak T Office of Nuclear Reactor Regulation
References
RTR-NUREG-0630, RTR-NUREG-0737, RTR-NUREG-630, RTR-NUREG-737, TASK-2.K.3.30, TASK-2.K.3.31, TASK-TM 867, TAC-45817, NUDOCS 8210220013
Download: ML20065N032 (1)

Text

TOLEDO

%su EDISON Rowo P. Cnoust Docket No. 50-346 gse v

License No. NPF-3

• SP S 22 Serial No. 867 October 19, 1982 Mr. T. M. Novak, Assistant Director for Operating Reactors Division of Licensing U.S. Nuclear Regulatory Commission Washington, D.C. 20555

Dear Mr. Novak:

This is in response to your letter dated July 13, 1982 (Log No. 1029) relating to modifications to ECCS evaluation models as a result of the resolution of NUREG-0630 issues as pertaining to the Davis-Besse Nuclear Power Station, Unit 1. Your letter requested an implementation schedule for these modifications to the ECCS evaluation models. As you are aware, activities for NUREG-0737, Item II.K.3.30 (Revisions to'Small Break LOCA Methods to Show Compliance with 100FR50, Appendix K) are currently pro-gressing. Following the completion and NRC approval of Item II.K.3.30, an implementation schedule for NUREG-0737, Item II.K.3.31 (Plant Specific Calculations to Show Compliance with 10CFR Part 50.46) will be developed.

The permanent modifications to the ECCS evaluation models will be under-taken as an extension of the II.K.3.31 activities. Toledo Edison will provide the implementation . schedule for these modifications 60 days after the NRC approval of II.K.3.30 activities.

Very truly yours, dh b/8 cc:

DB-1 NRC Resident Inspector Ao%

THE TOLEDO EDISON COMPANY EDISON PLAZA 300 MADISON AVENUE TOLEDO. OHIO 43652 B210220013 B21019 PDR ADOCK 05000346 P PDR