ML20063L642

Final Deficiency Rept Re Undersize Guide Holes in One & Two Directional Tubing Clamps Mfg by Stauff Corp.Initially Reported on 820806.Defective Clamps Returned to Vendor. Deficiency Corrected by 830114.Also Reported Per Part 21

ML20063L642
Person / Time
Site:	Perry
Issue date:	09/02/1982
From:	Davidson D CLEVELAND ELECTRIC ILLUMINATING CO.
To:	James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
References
REF-PT21-82 10CFR-050.55E, 10CFR-50.55E, NUDOCS 8209090175
Download: ML20063L642 (2)

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THE CLEVELAND ELECTRIC ILLUMIN ATING COMPANY P O DOX 5000 m CL EVELAND OHIO 44101 m T E L LP**ONE (216) 022 9800 e ILLU%NATING BiOG e $$ PUBLIC SQUARE Sarwng The Best Locarron in the Nation Daiwyn R. Davidson w entsu nt s <su u inou in nu Aso consinucnoN Sep tettbe r 2, 1982 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 Docke t Nos. 50-440; 50-441 Undersized Guide Holes in One and Two Directional Tubing Clamps [RDC 60(82)]

Dear Mr. Keppler:

This letter serves as our final report pursuant to 10CFR50.55(e) concerning undersized tubing clamps that were supplied to Johnson Controls at the Perry Nuclear Power Plant by thele sub-vendor, Stauf f Corporation of Newark, New Jersey.

Mr. J. Konklin of your of fice was first not tfied on August 6, 1982, by Mr. E.

Riley that The Cleveland Electric Illuminating Company was investigating the potential deficiency.

Our report includes a description of the deficiency, analysis of safety imp lica t ion, information concerning comple ted and planned corrective actions, and the planned date of completion.

Description of Deficiency A number of one directional and two directional tubing clamps manuf actured by S tauf f Corporat ton were found to have undersized guide holes. This was ident Lf ted by our Ins trumentation Ins talla tion Contractor, Johnson Cont rols, Incorporated (JCI), and documented on Nonconformance Reports numbered JCI 092, 093, 094, and 095. Af fected clamps included one directional clamp for 3/8" l

0.D. Tube, and two directional clamps for bo th 3/8" and 1/4" 0.D. Tube.

Analysis of Safety Implication i

Based upon review of the instrument tubing / support design on a generic basis, it can be postulated that, when tub Eng is anchored in the def icient clamps, the potent ial exists for overs tressing the tubing in critical locations under thermal conditions. If the clamps were to " lock up", thecmal growth of the tubing would be prevented.

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8209090175 820902 PDR ADOCK 05000440 gEP l gS1' l i

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Mr. Jcmes C. Keppler September 2, 1982 Correct ive Act ion Af ter preliminary concerns were ident if led , JCI immediately put all Stauf f tubing clamps on hold and did a 100% inspection of all unissued clamps. Of the clar.ps in stock, 6.9% were found to be rejectable and returned to the vendor. Field inspection of installed clamps revealed that 37 defective clamps were installed. The 37 defective clamps are identified on Nonconformance Report Number JCI 081. As a result of this problem and a vendor audit, Stauff Corporation was removed f rom the JCI Approved Vendors List. Subsequently, JCI notified Construction Quality Engineering that Stauf f Corporation had provided 10CFR21 notification to the U.S. Nuclear Regulatory Commission, Region I, concerning these clamps.

Resolution of audit findings by Stauf f Corporation is underway and upon close out, JCI will re-evaluate their sub-vendor for re-inclunion on thele Approved Vendors List. After these actions are taken, replacement clamps will be shipped and field ccreection will be imp leme n t ed . All required work should be comple ted by January 14, 1983.

If there are any questions, please do not hesitate to call.

Sincerely,

/

Dalwyn .. Davidson Vice President Sys tem Engineering and Cons truction DRD:pab cc: Mr. M. L. Gildner NRC Site Of fice Director Of fice of Inspect ion and Enforcement U.S. Nuclear Regulatory Commission Wash ing t'on, D.C. 20555 U.S. Nuclear Regula tory Commlasion c/o Document Management Branch Washington, D.C. 20555