ML19242D079

Submits Update on Status of long-term Items Per NRC 790516 Order.Discusses Auxiliary Feedwater Sys,Control Sys,Failure Modes & Effects Analysis,Transient Analysis & Procedure for Mgt of Small Breaks

ML19242D079
Person / Time
Site:	Davis Besse
Issue date:	08/07/1979
From:	Roe L TOLEDO EDISON CO.
To:	Reid R Office of Nuclear Reactor Regulation
References
533, TAC-11649, NUDOCS 7908140478
Download: ML19242D079 (2)

Text

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~ s Docket No. 50-346 License No. NPF-3 7gL,gg Serial No. 533 tustl3[]l6l()fd August 7, 1979 LOWELL E. ROE v,c. pr. .a.

Fac* tree Developmens (4191 2S9-5242 Director of Nuclear Reactor Regulation Attention: Mr. Robert N. Reid, Chief Operating Reactors Branch No. 4 Division of Operating Reactors United States Nuclear Regulatory Commission Washington, D. C. 20555

Dear Mr. Reid:

This letter is to provide you and your staff with an update on the status of the long term items related to the May 16, 1979 Order on the Davis-Besse Nuclear Power Station, Unit 1. Where applicable, schedules for station modifications identified in the Order are provided below as required by Mr. H. R. Denton's letter of July 6, 1979.

In the >by 16, 1979 order five items were listed under the Part II, long term section. The status of these items follows:

1. Continued Auxiliary Feedwater System Performance Review: Toledo Edison is continuing to review the auxiliary feedwater system reliability and performance. An independent evaluation currently underway is expected to be complete and submitted in conjunction with other B&W plant studies in February, 1980.

2. Integrated Control Systems Failure Modes and Effects Analysis This analysis is being conducted by Babcock & Wilcox. Currently the final report is expected to be submitted to the Nuclear "egulatory Commission staff by August 9, 1979.

3. Upgraded Anticipatory Reactor Trip Toledo Edison responded to Item 5 of NRC's Inspection and Enforcement Bulletin 79-05B on May 21, 1979 with the preliminary design of the upgraded anticipatory reactor trip system ( ARTS) . Installation of the ARTS is expected for the first refueling outage twelve months af ter indicated design acceptability.

4. Continued Attention to Transient Analysis and Procedure for Management of Small Breaks.

Toledo Edison is continuing through the efforts of the B&W Owner's Group in the areas of transient analysis and small reactor coolant breaks.

The scope and schedule of this effort is currently under discussion with your staf f and the Owner's Group. \, '

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Docket No. 50-346 License No. NPF-3 Serial No. 533 Augus t 7, 1979 Page Two

5. Continued Operator Training Toledo Edison has factored the recent changes and lessons of TMI-2 into its on-going operator training program.

Very truly yours, i

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