ML20027D507

Interim Deficiency Rept Re Lack of Insp Records for Nelson Studs Cable Tray Hanger Installations.Base Metal Defects Exist in Some Imbed Plates.Investigation Continuing.Next Rept Will Be Submitted by 821215

ML20027D507
Person / Time
Site:	Zimmer
Issue date:	10/28/1982
From:	Borgmann E CINCINNATI GAS & ELECTRIC CO.
To:	James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
References
10CFR-050.55E, 10CFR-50.55E, QA-2083, NUDOCS 8211040397
Download: ML20027D507 (2)

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f THE CINCINNATI GAS & ELECTRIC COMPANY CINCINN ATI. OHIO 45201 October 28, 1982 QA-2083 E. A. BORG M AN N SENSOR VICE PRESiOENT U. S. Nuclear Regulatory Commission Region III 799 Roosevelt Road Glen Ellyn, Illinois 60137 Attention: Mr. J. G. Keppler Regional Administrator RE: WM. H. ZIMMER NUCLEAR POWER STATION UNIT 1 10CFR50.55(e), ITEM E-29, LACK OF INSPECTION RECORDS FOR NELSON STUDS, DOCKET NO. 50-358 CONSTRUCTION PERMIT NO. CPPR-88, W.O. #57300 JOB E-5590, FILE NO. NRC-7, E-29 Gentlemen:

t This letter constitutes an interim report concerning the subject condition, initially reported to the Commission on September 28, 1982, under the requirements of 10CFR50.55(e) .

l During a review of site records it was discovered that inspection records of Nelson Stud installations for cable tray hangers could not l

be located, though a program for inspection had existed. Further in-l vestigation revealed that base metal defects existed in some imbed I plates. Visual inspection showed some Nelson Studs did not possess all l the weld attributes required by the procedure. The base metal defects i

found in the imbed plates were a result of the method used to install i a template needed to properly align and install the required configur-l ation of Nelson Studs.

i CG&E's Nuclear Engineering and Quality Assurance Departments are presently uriertaking a thorough investigation to determine methods re-quired to confirm the structural adequacy of the installed cable tray supports and provide additional rework or repair, if required.

8211040397 821028 PDR ADOCK 05000358 S PDR Hh)

NOV 1 G82

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A Mr. J. G. Keppler Regional Administrator Region III October 28, 1982 QA-2083 Page 2 Subsequent to our ongoing investigation, we will inform you of our proposed plan for verifying the structural integrity of the supports and its tentative schedule for completion. This report will be sub-mitted by December 15, 1982.

We trust the above will be found acceptable as an interim report 4 unde; 10CFR50. 55 (e) .

Very truly yours,

THE CINCINNATI GAS & ELECTRIC COMPANY

'g m i E. A. BORGMANN SENIOR VICE PRESIDENT 1

i-FKP:plc 1 j-cc: NRC Office of Inspection & Enforcement

< Washington, D.C. 20555 NRC Senior Resident Inspector Attn: W. F. Christianson i Zimmer Project Inspector Region III 1

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