ML20009G293

Interim Deficiency Rept Re Bailey 720 Util Station Devices Installed in GE Balance of Plant Panels,Initially Reported on 810626.Devices W/Defective Buttons Will Be Reworked or Replaced.Corrective Action Will Be Completed by 830501

ML20009G293
Person / Time
Site:	Perry
Issue date:	07/24/1981
From:	Davidson D CLEVELAND ELECTRIC ILLUMINATING CO.
To:	James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
References
(RDC-32-(81)), 10CFR-050.55E, 10CFR-50.55E, LRDC-32-(81), NUDOCS 8108040099
Download: ML20009G293 (2)

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[J i E , {' ij< fj P O Dox 5000 m CLEVELAND. OHIO 44101 m TELEPHONE (216) 622-9800 e ILLUMINATING DLDG e 55 PUE,LIC SOUARE "3 " # # U" '" # #I' "

Datwyn R. Davidson vics est s'oF NT SYSTE M ENGINEE RING AND CONSTRUcilON July 24, 1981 /p Mr. James G. Keppler

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Director, Region III - --

Office of Iispection and Enforcement r 14s,Nuc$,sgArorit CC' p U. S. Nuclear Regulatory Commission 799 Roosevelt Road

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.1 RE: Perry Nuclear Power Plant Docket Nos. 50-440, 50-441 Interim Report on Bailey 720 Utility Stations (RDC 32 (81))

Dear Mr. Keppler:

This letar will serve as the interim report as reqtiired by 10CFR50.55 (e) on the potential significant deficiency concerning Bailey 720 Utility Statim dreices installed in the Balance of Plant (BOP) panc'sc supplied by General t.lectric. This item was identified to Mr. McGregor <>f the NRC, Region III, Office of Inspection and Enforcement on June 26, 1981 by Mr. W. J. Kacer of the Cleveland Electric I11uninrting Company.

Description of Deficiency The Bailey 720 Utility Station devices contain push buttons that may stick in an open or closed condition as a result of irregularities in the plastic part used in the switch assembly. If the uutton bec mes stuck during operation, the operator would be required to release the button by pulling it out with his fingers. This condition was identified to the Cleveland Electric Illuminating Company by General l Electric on May 13, 1981.

An inspection of the Bailey devices contained in the Unit 1 BOP panels has been l conducted identifying ten push bottons that were found to be sticking. Inspection l

of Unit 2 panels will be completed following turnover of the system to the Nuclear Test Section.

Analysis of Safety Implications The Bailey 720 Uti 'ty Station devices are utilized for safety related manual control functions. A deft e device could result in a false operating signal to be trans-mitted during manur aperation. In a postulated plant event this could result in the technical specitications being exceeded.

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Mr. James G. Keppler Page Two Corrective Action The Bailey 720 Utility Station devices identified as having defective buttons will be reworked or replaced as determined by Bailey Controls. Following this activity, all buttons will be tested to ensure that Bailey devices perform their originally designed function. Implementation of the corrective action will be completed by May 1, 1983.

Very truly yours,

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Dalwy R. Davidson Vice Presidant System Engineering and Construction DRD/llp cc: Mr. Jack llughes - NRC Site Mr. Victor Stello Of fice 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 I

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