ML20038C175

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Final Deficiency Rept Re Rockbestos Coaxial Cable Failure, Initially Reported 810626.Cable in Primary Containment Being Replaced W/Cable Meeting Environ Requirements
ML20038C175
Person / Time
Site: Fermi DTE Energy icon.png
Issue date: 11/20/1981
From: Wells D
DETROIT EDISON CO.
To: James Keppler
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
References
10CFR-050.55E, 10CFR-50.55E, EF2-54715, NUDOCS 8112100217
Download: ML20038C175 (1)


Text

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Mr. James G. Keppler, Director Region III U.S. Nuclear Regulatory Cm mission 799 Roosevelt Road Glen Ellyn, Illinois 60137

Subject:

Final Report of 10CFR50.55(e) Item on Rockbestos Coaxial Cable Problem (#45)

Dear Mr. Keppler:

This is Detroit Edison's final report on the Rockbestos Coaxial Cable problem. The problem was originally reported to Mr. J. Smith of NRC-Region III by Detroit Edison's Mr. H.A. Walker, Supervisor-Construction Quality Assurance, on June 26, 1981.

Detroit Edison received notification frm the Rockbestos Campany that sme of their RSS type coaxial cable had failed while undergoing testing at a user's facility. This type cable is used at the Fermi 2 site, how-ever, the specific cable that failed (RSS-6-104) is not used at the Fermi site. The problem appeared to involve all their 100 series type cable.

Fermi had not received any of the RSS-6-104 cable, but the coaxial cable received frm Rockbestos was 100 series cable. Rockbestos 100 series cable luceived at the Fermi 2 site has been identified and located. This type cable which has been installed in the primary containment is being replaced with cable meeting environmental requirements. Uses of the de-ficient Rockbestos cable will be restricted to areas not requiring environ-mental qualifications.

If you have questions concerning this matter, please contact Mr. H.A. Walker, Supervisor-Construction Quality Assurance.

Very truly yours, DAW / HAW /cp cc:

Mr. Victor Stello, Jr., Director Office of Inspection and Enforcement Division of Reactor Inspection Programs U.A. Nuclear Regulatory Ca mission Washington, D.C. 20555 Mr. Bruce Little, Resident Inspector U.S. Nuclear Regulatory Ca mission Resident Inspector's Office 6450 North Dixie Highway Newport, Michigan 48166 T27b 8112100217 811120' d

PDR ADOCK 05000341 S

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