ML20150F329
| ML20150F329 | |
| Person / Time | |
|---|---|
| Site: | Perry  |
| Issue date: | 07/18/1979 |
| From: | Davidson D CLEVELAND ELECTRIC ILLUMINATING CO. |
| To: | NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| Shared Package | |
| ML19209A756 | List: |
| References | |
| NUDOCS 7910050343 | |
| Download: ML20150F329 (3) | |
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s THE' CLEVELAND ELECTRIC ILLUiillN ATING COMP;.Y ittuuinatiac stoa,. rust;c seurat. ettvitano. co,o..,,,,,gtg,wont arisi s2212so. wait mooat.
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Dalwyn R. Davidson Vict PatsiotNT. tNGINatalMG 1
July 18, 1979 l
}T. Janes Keppler Director, Regica III Cffice of Incpecticn and Enforcement-U.S. IMclear Regulatory C --ission 799 Roosevelt Road Glen Ellyn, Illinois 60137 Re: Perry 1:uclear Pcwer Plant Interim Report cn Rochbestos Cable Jacket
Dear.t. Keppler:
This letter is an interi= repcrt as require:1 by 10 CFR SC.55(e) en the deficiency cc=cerning Rockbestos Oc=pany cable. This ites was first discussed in a telephone ccaversation between Mr. M. R. Edelnen of the Cleveland Electric Illuninating Cecpany and 12. Jim Konklin of the IIRC Region III, Office cf Inspectica and Enforcement en June 27, 1979 Description of Deficiency Rockbestos Co. was centracted by the C2eveland Electric Illuninating Co. to manufacture m il power and centrol cable for Perry Ziuclear Pcwer Planf. After receipt of the cable it was discovered that the cable's hypalen Jacket was eccentrisic and at ti=es fell belev the 60% tolerance required in cur speci-ficatica thrcush l? CIA standard S-68-516. A sa=pling of the cable received revealed that apprcximately 6% of the reels of cable sanpled centained cable which did not meet the specificatica requirements. Readings as lov as 62%.cf jacket thickness were recorded. As a result there is sene ccncern that the esble jacket vill not be able to Palfill its intended fancticn (to centain and p ctect the individual cen:iuctors) and that incipient faults could cecur.
Since it is felt that such a fault could adversely affect the safe cperacien
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cr shutdcwn of the nuclear pcwer plant, extensive evaluatien er excensive
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repair vill be required to establish the adequacy of the cable jacket to perform its intended safety Panction. At present, the Rockbestos Co. is prc-
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posing to conduct vorst case pull test utilicing cable with jacket as icv ss l
50% of specified thickness. These tests are scheduled co be ceniucted che week of August 13, 1979
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I Mr. Ja:es Keppfer July 13, 1979 Upen receipt of the vorst case test results, an evalua'.icn cf the resu.lts vill be cenducted. The results of this evaluatien. rill 'ce ciscribed ir. a final re-pcEt to be forwarded to ycur office by Septe=ber 23, 1979 Very truly yours, N.
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C d'**., l} /.'.'. '. o. L..,
i Dalvyri R. Davidsen Vice tresident-Syste= Engineering Se Ccnstructicn DRD:jl ec: Victor Stello, Director Office of Inspsetion and Inforce=ent U. S. Nuclear Regulatory Cc==issica
'a'ashington, D. C.
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