ML20084F876
| ML20084F876 | |
| Person / Time | |
|---|---|
| Site: | Perry  |
| Issue date: | 04/26/1984 |
| From: | Edelman M CLEVELAND ELECTRIC ILLUMINATING CO. |
| To: | James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| References | |
| REF-PT21-84 RDC-68(83), NUDOCS 8405040345 | |
| Download: ML20084F876 (2) | |
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CLINi NO J
P O DoX 5000 - CLEVEl. AND. OHIO 44101 - TEL&HONI (216) 6224800 - lLLUMINATING BLDG.
- 55 PUBLICSoVAPE Semng The Best Location in the Nation s
MURRAY R. EDELMAN VICE PRESIDENT s
NUC t E AR Mr. James G. Kcppler Regional Administrator, Region III
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Office of Inspection and Enforcement U.S. Nuclear Regulatcry Commission 799 Roosevcit Road Glen Ellyn, Illinois 60137 RE:
Perry Nuclear Power Plant Docket Nos. 50-440; 50-441 Deficiency in the Class 1E Low s
Voltage Switchgear RDC [68(83)]
Dear Mr. Kepph'it :
s This letter ser res as ouf. final report pursuant to 10CFR50.55(e) concerning the defect ac6ociated with the Class 1E Low Voltage Switchgear furnished by Brown Boveri-ElectLlc (BBE)., init ial notification that this problem was being evaluated b/ The Cleveland Electric Illuminating Company (CEI) was made to your office on March 29, 1983, by Hi. E. Riley of CEI.
Previously submitted correspondence on this subject was transmitted April 27, 1983, and November 29, 1983.
On Deceutber 22, 1982, Brown Boveri notified the Nuclear Regulatory Commission,'onder IC';FR21, of a deficiency in the low voltage switchgear.
This report contains a description of the deficiency, an analysis of safety implications, and the corrictive action taken.
Description of the Detleiency
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Brown Boveri Electric supplied forty Class 1E low voltage switchgear enclosures to the Perry Nuclent t'over Plant (PUPP), Units 1 & 2.
On March 16, 1983, BBE QA representative and FNPP site parsonnel conducted an on-site inspection of the low voltove switchgear to-ver.I,fy that spot welds and equivalent arc welds were in accordance with drawing and' canuf acturing procedures.
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One enclosure, cubicie F2C05,svas found to be missing spat welds and equivalent are welds in thelrenr sectica connecting the rear vertical corner channel with the rear horizontal' channel.
It had been determined by BBE that the nonconforming condition was caused by~nanufacturlag.cquipment limitations.
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Analys is of Safety,,linolIcatirn
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Because of the nonconforminr. condition on' cubicle,EF2C05, the seismic integrity of the cubicle was in question. Currently, thio cubicle is designed as
" future" on the Perry N,elear Power Plant, one,1tae drspings.
If this condition is lef t uncorrected, the potential vottid exite 'that if this cubicle is utilized, any electrical load controJ1cd by it would be' unavailable. af ter a seismic c
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,Mr. J me: G. K:pplsr April 26, 1984 i
Corrective Action Taken Rather than perform a detailed evaluation on seismic acceptability of the cubicle, BBE elected to provide a welding fix for this cubicle.
Supporting the fix, BBE supplied the required instructions and a qualified welding procedure. The site electrical contractor did not have in place a procedure which covered BBE welding requirements.
Site Engineering then evaluated and accepted an equivalent site approved welding procedure for utilization on cubicle EF2C05.
Nonconformance Report CQC-2666 was issued to track the required repair.
Completion of the welding fix is anticipated by May 31, 1984.
Please call me if there are additional questions.
Sincerely, f8 M. R. Edelman Vice President Nuclear Group MREspah cc:
Mr. M. L. Gildner USNRC, Site Office Director Of fice of Inspection and Enforcement U.S. Nuclear Regulatory Commission Washington, D.C.
20555 U.S. Nuclear Regulatory Commission c/o Document Management Branch Washington, D.C.
20555 Records Center, SEE-IN Institute of Nuclear Power Operations 1100 circle 75 Parkway, Suite 1500 Atlanta, Georgia 30339 L