ML20106E241

Interim Part 21 & Deficiency Rept Re Power Lead Gland Assembly Parts Supplied by Conax.Initially Reported on 840914.Supplier Agreed to Evaluate 40 Assemblies for Potential Defect

ML20106E241
Person / Time
Site:	Perry
Issue date:	10/10/1984
From:	Edelman M CLEVELAND ELECTRIC ILLUMINATING CO.
To:	James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
References
REF-PT21-84-498-000 (RDC-114(84)), PT21-84-498, PT21-84-498-000, RDC-114(84), NUDOCS 8410290109
Download: ML20106E241 (2)

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.f P.O. BOX 5000 - CLEVELAND. OHIO 44101 - TELEPHONE (216) 622-980G - ILLUMINATING BLOG. - 55 PUBLIC SQUARE Serving The Best Location in the Nation MURRAY R. EDELMAN October 10, 1984 VICE PRESIDENT NUCLEA R Mr. James G. Keppler Regional Administrator, Region III Office of Inspection and Enforcement U.S. Nuclear Regulatory Commission 799 Roosevelt Road Glen Ellyn, Illinois 60137 RE: Perry Nuclear Power Plant Docket Nos. 50-440; 50-441 Power Lead Gland Assemblies Supplied by Conax [RDC 114(84)]

Dear Mr. Keppler:

This letter serves as an interim report pursuant to 10CFR50.55(e) concerning Power Lead Gland Assemblies furnished by Conax which may suffer from a loss of electrical continuity. Our evaluation of this condition, per Deviation Analysis Report 201, was first reported by Mr. P. Martin of The Cleveland Electric Illuminating Company to Mr. James McCormick-Barger of your office on Septembar 14, 1984.

Ti is report contains a description of the deficiency and the planned course of action for completion of our evaluation for significance.

Description of Deficiency Conax supplied eight hundred twenty-one (821) power lead gland assemblies to the Perry Nuclear Power Plant (PNPP), Units 1 and 2, under procurement speci-fication 793 12.

On August 31, 1984, Conax filed a 10CVR21 report with the Nuclear Regulatory Commission concerning the power lead gland assemblics, Conax part numbers 7D92-11000-01 through 7D92-11000-04, 7D92-11001-01 through 7D92-11001-05, supplied to PNPP, and N-11150-01 and N-11151-01, supplied to Vermont Yankee Nuclear Plant. The nature of the defect is a potential loss of electrical continuity, as a result of a gradual reduction in the cross-sectional area of the conductors in the internal sealant area of the gland which could eventually lead to total conductor separation.

Further investigatien by our Project Organization revealed that 338 power lead gland assemblies are in various stages of installation on Unit 1, with the remainder located in the PNPP warehouse.

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Completion of Evaluation Nonconformance Reports TAS 90 and TAS 91 we're issued for Unit 1 and Unit 2 respectively, to document this potential deficiency and track the resolution

. of this problem. Conax has agreed to conduct,a series of tests on forty power

_ lead' gland assemblies that have been returned to them for evaluation of the parameters that may cause this potential defect. We plan to submit our final

- report on this subject by February 28, 1985.

' Please call if there are any additional c,uestions.

Sincerel,

k I

Murray[R. Edelman Vice President Nuclear Group MRE:jj DW165/P/2 cc:

Mr. J. A. Grobe NRC Site Office Director Office 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 O

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