ML19345B975

Final Part 21 Rept Re Substantial Safety Hazard.Cables Supplying Ac Power to Battery Chargers Not Properly Derated for Randum Lay Cable Tray.Cables Replaced

ML19345B975
Person / Time
Site:	Summer
Issue date:	11/20/1980
From:	Nichols T SOUTH CAROLINA ELECTRIC & GAS CO.
To:
References
10CFR-050.55E, 10CFR-50.55E, NUDOCS 8012030613
Download: ML19345B975 (3)

Text

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1 south CAnouNA ELECTRIC a gas COMPANY Post CmCE son 784

.- Cotumnia, SourH CAmouMA 29218 T. C. Nicuous. Jn.

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Novembor 20, 1980 Mr. James P. O'Reilly, Director U. S. Nuclear Regulato~:y Commission Region II, Suite 3100 101 >Srietta Street, NW Atlanta, Georgia 30303

Subject:

Virgil C. Summer Nuclear Station Reportable Substantial Safety Hazard Undersized Cable for Battery Chargers Nuclear Engineering File 3.1051 Docket No. 50/395

Dear Mr. O'Reilly:

On 10/23/80, a substantial safety hazard as defined by 10CFR21 was reported to Mr. Floyd Cantrell at the NRC Region II office. The item involved possible loss of battery chargers due to improper derating of the cable supplying ac power to the chargers. Details are given on the attachment.

The item is being reported under our 10CFR50.55(e) procedure. This is considered a final report on the matter.

Very truly yours, t ,

T. C. Nichols, Jr.

JAW:TCN:rh cc: V. C. Summer G. H. Fischer T. C. Nichols, Jr.

E. H. Crews, Jr.

D. A. Nauman O. W. Dixon, Jr. Qg)/ 7 R. B. Clary V J. B. Knotts, Jr. S W. A. Williams, Jr.

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A.

Skolds Bursey //

I&E (Washington) '

Document }bnagement Bra'.tch NPCF/tSitaker File

• 0 3 12080 CIS

10CFR21 - SUBSTANTIAL SAFETY HAZARD

1. Name and Address of Reporting Individual James A. Wactor P. O. Box 764 Columbia, S. C. 29218

2. Identification of Basic Component Design of cables supplying power to battery chargers

3. Identification of Firm Supplying Component Gilbert Associates, Inc.

P. O. Box 1498, Reading, Pa. 19603

4. Nature of Defect, Substantial Safety Hazard Created, and Evaluation The cables supplying ac power to the battery chargers were not properly derated for random lay cable tray. This could lead to overheating of the cable insulation and possibly failure of the cable. This could result in loss of one or more of the battery chargers.

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5. Date 'aforr.ation of Defect was obtained - 10/22/80

6. Num.ber and Location of Defect Three battery chargers were effected - the norcial A & B battery chargers plus the swing chargers.

7. Corrective Action The cables have been repisced with the proper size cables.

8. Advice to Purchasers or Licensees None

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