ML20087F696

Final Deficiency Rept 84-02 Re Incorrectly Wired Distribution Panel IDCO5E.Initially Reported on 840207. Internal Wiring Revised to Meet Approved Design Drawings. Revs to Be Completed by June 1984

ML20087F696
Person / Time
Site:	Indian Point, Braidwood
Issue date:	03/12/1984
From:	Swartz E COMMONWEALTH EDISON CO.
To:	James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
References
8277N, 84-02, 84-2, NUDOCS 8403190193
Download: ML20087F696 (2)

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^\ CommennesNh Edison f one Fust Nation &l Puts, Chictgo. Ilhnois M .

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g }. Address Reply Chicago. Illinois to:60690Post Office Box 767

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~ March 12, 1984

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.Mr. James G. Keppler j Regional Administrator - Region III '

' U. S. Nut:: lear Regulatory Commission (

799 Roosevelt Road  !

,  : Glen.

Ellyn, 'IL : 60137 i

l

Subject:

. Braidwood Station Unit I I 10 TR 50.55(e) 30 Day Report Incorrectly Wired Distribution Panel NRC Docket Nos. 50-456/457 ,

Dear Mr. Keppler:

. On February.7,'1984, the Commonwealth Edison Company Project

, Construction Department notified Mr. Cordell Williams of a deficiency l~ ' reportable pursuant to 10 CFR 50.55(e) regarding the incorrectly wired distribution panel IDC05E. For your tracking purposes, this deficiency ,

'was assigned Number 84-02.

. This letter fulfills the thirty (30) day reporting requirements

" of 10 CFR 50.55(e) regarding this matter and.is considered to be the final report.

i DESCRIPTION OF DEFICIEPCY '

l~ ~ During a test by the Commonwealth Edison Company Operational Analysis Department, it was determined that the non-safety related distribution panel ERI in panel 1DC05E was wired incorrectly by the reanufacturer. The General Electric non-safety related distribution

panel ERI on buses 113 and 114 are connected to safety related buses

' 111 and 112 respectively instead of being fed from non-safety related feed breaker DF2, as shown on drawings 1-40300C09, 1-425T

, and 1-4251F..

AjNALYSIS OF SAFETY IWLICATIONS.

.A possible fault of the non-safety relatod circuit on the non-safety related -125 volt bus coupled with a failure of the associated l_ non-safety related breaker could cause the loss of the 125 volt t ^ -

safety related bus and subsequent loss of its intended function.

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fed MAR 141984-L , . . _ .. 1 _ _ _ _ . _ . . . _ . , _ _ _ _ _ . _ _

CORRECTIVE ACTION TAKEN AND DATE OF COWLETION Commonwealth Edison Company Project Construction Department has issued Non-Conformance Report No. 593. The corrective action is to revise the internal wiring to meet the approved design drawings.

Work will be ccmpleted when materials are received from General Electric. Although no date of shipment has yet been set, the requisite wirinc revisions are expected to be accomplished by June 1984.

Please address any . questions concerning this matter to this Very truly yours, cp e E. Douglas Swartz MJclear Licensing Administrator cc: RIII Inspector - Braidwood Director of Inspection and Enforcement US Nuclear Regulatory Commission Washington, DC 20555 8277N 4

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