ML19320D098
| ML19320D098 | |
| Person / Time | |
|---|---|
| Site: | Perry  |
| Issue date: | 07/14/1980 |
| From: | Fiorelli G NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| To: | Davidson D CLEVELAND ELECTRIC ILLUMINATING CO. |
| References | |
| NUDOCS 8007180545 | |
| Download: ML19320D098 (1) | |
Text
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+*p NUCLEAR REGULATORY COMMIS510N a
S REGION ill e
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' f 799 ROOSEVELT ROAD GLEN ELLYN, f LLINO15 60137 OUL 14 h Docket No. 50-440 Docket No. 50-441 Cleveland Electric Illuminating Company ATTN: Dalwyn R. Davidson Vice President - System Engineering and Construction Post Office Box 5000 Cleveland, OH 44101 Gentlemen:
Thank you for your interim report dated June 25, 1980, pursuant to 10 CFR 50.55(e) regarding Cutler-Hammer motor control centers. We will review your final report on this matter upon receipt.
Your cooperation with us is appreciated.
Sincerely, T
5 Gaston Fiorelli, Chief Reactor Construction and Engineering Support Branch cc w/1tr dtd 6/25/80:
PDR Local PDR NSIC TIC Harold W. Kohn, Power Siting Commission Mr. Daniel D. Wilt, Attorney Helen W. Evans, State of Ohio cc: Central Files Reproduction Unit Nrc 20b S007180 3
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P o Box 5000 m CLEVELANo. ohio 44101 e TELEPHONE (216) 822 9000 e ILLUMW ATING BLOG e S5 PUBLIC $oVARE Serang The Be:;? Locatov tu finon Delwyn R. Davidson l
viCE PRE $iOENT
$0$1[W [NGINE(RING AND CoNSTRUCfiON June 25, 1980 Mr. James G. Keppler Director, Region III Office of Inspection and Enforcement i
U.S. Nuclear Regulatory Commission g4 ql 799 Roosevelt Road Glen Ellyn, IL 60137 Re: Perry Nuclear Power Plant Interim Report on Motor-Controlled Centers
Dear Mr. Keppler:
This letter serves as an interim report as required by 10CFR50.55(e) on the deficiencies concerning Cutler-Hammer motor-control centers. These items were first reported to the NRC by Cutler-Hammer as a 10CFR Part 21 on May 14,1980.
It was later reported as a possible significant deficiency under 10CFR50.55(e) in a telephone conversation between W. J. Kacer and T. A. Boss of The Cleveland Electric Illuminating Company and Mr. J. Konklin of the NRC Region III, Office of Inspection and Enforcement on May 28, 1980 Description of Deficiency Cutler-Hammer was contracted by The Cleveland Electric Illuminating Company to manufacture Class lE motor-control centers for Perry Nuc-lear Power Plant. During final inspection of a portion of these units, it was discovered that the type SIS wire installed in the switch units was not qualified to IEEE 383 and that improper saddle clamps were used on the terminal blocks. Further inspection of all 1,943 starters revealed that 42 contained improper wire and 25 contained terminal blocks with improper saddle clamps. It was later discovered at the
,iob site that four splice plate carriage bolts broke during installa-tion on the bus. Since these deficiencies place serious doubt on the environmental qualification of the equipment, extensive repair will be required to upgrade the units to meet specification requirements.
To meet these requirements, Cutler-Hammer has proposed the following:
JUL 31980 s
hL s cp q, v q 9 5 s l
i Mr. James G. Keppler June 25, 1980
)
1.
Return all starter units with improper wire to the manufac-turer for rewiring.
2.
Replace all termibal blocks with improper saddle clamps.
3.
Replace all splice plate carriage bolts.
CEI feels proposals numbers 1 and 2 are adequate to correct their respective deficiencies. However, we feel that the cause of the carriage bolt breakage has not been adequately addressed. As a result, we will attempt to determine the cause of the breakage in order to determine the adequacy of proposal number 3 At the present time CEI is analyzing the broken carriage bolts in an attempt to i
determine the cause of failure. This evaluation should be completed by July 1, 1980. After that, a plan to resolve the problem will be coordinated with Cutler-Hammer and a final report on these deficiencies will be submitted by September 30, 1980.
Very truly yours, Dalwyn. Davidson Vice "._ssident System Engineering and Construction DRD: BAS l
ec: Mr. Victor Stello, Director Office of Inspection and Enforcement U.S. Nuclear Regulatory Comission l
Washington, D.C.
20555 1
1 l
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