ML20078A589

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Third Interim Deficiency Rept 83-07 Re Failure of Dc Cables in Underground Duct.Cables Will Be Shipped Back to Supplier to Attempt to Determine Cause of Ground Fault.Final Rept Expected by 831201
ML20078A589
Person / Time
Site: Byron  Constellation icon.png
Issue date: 09/08/1983
From: Tramm T
COMMONWEALTH EDISON CO.
To: James Keppler
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
References
10CFR-050.55E, 10CFR-50.55E, 10CFR.50.55E, 7269N, 83-07, 83-7, NUDOCS 8309230334
Download: ML20078A589 (1)


Text

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f#D ' Commonwealth Edison

'/ O .)J ons First NItion:t P!ert, Chicigo.Jlinots 3 v J Address Reply to: Dost Office BoQ67

\G C5t ago, Illinois 60690 i

, September 8, 1983~

Mr. James G. Keppler, R'egional Administrator '

U.S. Nuclear Regulatory Commission - Region III 799 Roosevelt Road '

. Glen Ellyn, IL 60137

-m

Subject:

Byron Generating Statian Units 1 and 2 DC Cable -Fai~ lure '

NRC Docket Nos. 50-454 and 50-h55

~'

. References (a):

December 6, 1983 letter from.T. R.

'- Tramm~to J. G. Keppler.

(b): June 1, 1983 letter from T. R. Tramm to J. G. Keppler.

Dear Mr. Keppler:

References (a) and (b) provided interim reports on a deficiency reportable . pursuant t'o 10 CFR 50.55(e) regarding the failure of several DC cables in an underground duct at Byron Stat [on. This is the third interim report. For NRC tracking purposes this deficiency is numbered 83-07.

At this point in time, a representative sample of the suspect cab.les has been removed for inspection. Preliminary visual inspection on site._has not revealed the cause of the. problem. Therefore the cables will be shipped back to.the supplier for labor,atory testing to attempt to

, determine the cause of ground fault. A final report will be available by December 1, 1983.

_ Please direct questions regarding.this matter to this office.

Very truly yours, f(ifM*"

T. R.'Tramm, Nuclear Licensing Administrator 1m cc: Director of Inspection and Enforcement

.: <@ sS x6 6 7269N lg 8309230334 830908 gDRADOCK05000 m .