ML20246D198

Provides Util Position Re Environ Qualification of Bunker- Ramo Electrical Penetration Modules (Epms).Spare EPMs Will Be Removed During Next Refueling Outage to Conduct Test to Provide Info That EPMs Environmentally Qualified

ML20246D198
Person / Time
Site:	Davis Besse
Issue date:	05/01/1989
From:	Shelton D TOLEDO EDISON CO.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
1657, NUDOCS 8905100151
Download: ML20246D198 (1)

Text

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TOLEDO Docket Number 50-346

[j[)ll]l}l%l License Number NPF-3 A Qntew Enq Conm Serial Number 1657 DONALD C. SHELTON Vice Presalent-Nuclear

[419] 24G 2300 May 1, 1989 United States Nuclear Regulatory Commission Document Control Desk Washington, D. C.

20555

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Subj ect:

Environmental Qualification of Bunker-Ramo (Amphenol) Electrical Penetration Modules Gentlemen:

I In response to your letter of January 31, 1989 (Log Number 2821), Toledo Edison herein provides its position relative to the environmental qualification of the Bunker-Ramo (Amphenol) Electrical Penetration Modules (EPMs).

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The Bunker-Ramo EPMs installed in nuclear safety-related instrumentation circuits at Davis-Besse Nuclear Power Station are qualified in accordance with the " Guidelines for Evaluating Environmental Qualification of Class 1E Electrical Equipment in Operating Reactors," November 1979 (DOR Guidelines).

The information utilized in the environmental qualification package includes that presented in meetings with the Nuclear Regulatory Commission (NRC) Staff on August 4, 1988 and April 4, 1989, as enhanced by supplemental information, and provides reasonable assurance that the Bunker-Ramo EPMs are environmentally qualified.

Toledo Edison also plans to remove spare Bunker-Ramo EPMs at the next refueling outage (presently scheduled to begin February 1990) to conduct a test to provide information beyond the reasonable assurance now provided in the environmental qualification package that the Bunker-Ramo EPMs are environmentally qualified. This testing vill be conducted subsequent to the refueling outage.

Following this testing, the results will be incorporated in the environmental qualification package and vill be available for inspection.

If you have any questions concerning this matter, please contact Mr. R. V.

Schrauder, Nuclear Licensing Manager, at (419) 249-2366.

Very truly yours,

/

RMC/dlm cc:

P. M. Byron, DB-1 NRC Resident Inspector A. B. Davis, Regional Administrator, NRC Region III

[ggf T. V. Vambach, DB-1 NRC Senior Project Manager l

1 I O THE TOLEDO EDISON COMPANY EDISON PLAZA 300 MADISON AVENUE TOLEDO OHIO 43652 8905100151 890501 PDR ADOCK 05000346 P

. PDC

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