ML20092E012
| ML20092E012 | |
| Person / Time | |
|---|---|
| Site: | Perry  |
| Issue date: | 06/14/1984 |
| From: | Edelman M CLEVELAND ELECTRIC ILLUMINATING CO. |
| To: | James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| References | |
| (RDC-89(84)), NUDOCS 8406220247 | |
| Download: ML20092E012 (2) | |
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P.o. BOX 5000 - CLEVELAND, oHlo 44101 - TELEPHONE (216) 622-9800 - ILLUMINATING BLDG. - 55 PUBLIC SQUARE
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i Sening The Best Location in the Nation MURRAY R. EDELMAN VICE PRESIDENT NUCLE A 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 Operator Stem Keys for Motor Operated Valves Supplied by Borg-Warner [RDC 89(84)]
Dear Mr. Keppler:
This letter serves as the final report for Unit 1 only pursuant to 10CFR50.55(e) concerning motor operated valve (MOV) stem keys that are too long.
Mr. P. R.
Pelke of your of fice was notified on January 11, 1984, by Mr. B. D. Walrath of The Cleveland Electric Illuminating Company that this problem was being evaluated.
An interim report on this subject was submitted February 10, 1984. This report contains a description of the deficiency, an analysis of safety impli-cations, and the corrective action taken.
Description of Deficiency The Borg-Warner Fluid Controls Division has supplied MOV motor operators with stem keys that are too long, extending beyond the adapter yoke. When the mounting bolts are torqued, the keys are forced against the key retainer plate causing indentation and distortion of the retainer.
Analysis of Safety Implications Large distortion of the upper key retainer could cause increased operating torque requirements and may impair operability of the valve.
Failure of a valve to operate, depending on its function, could constitute a significant event.
8406220247 840614 PDR ADOCK 05000440 M.1g S
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June 14, 1984 Mr. ' James G. Kippler Corrective Action All Unit 1 valves supplied by Borg-Warner which utilize stem keys have been inspected for the subject condition. Three valves with discrepant stem keys were identified on Nonconformance Reports as described in our interim report.
No additional cases of improper stem keys were found. The three discrepant valves have been repaired and the corresponding Nonconformance Reports are closed out.
The indeterminate status of the Unit 2 Borg-Warner valves which utilize stem keys has been documented on Nonconformance Report OPQC 727.
We will contact your office by December 13, 1985, concerning scheduling of the inspection of Unit 2 valves.
Please call if there are any questions.
Sincerely, Na~yb Murray R. Edelman Vice President Nuclear Group MRE:pab cc:
Mr. J. A. Crobe 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 Docurent Management Branch Washington, D.C.
20535 Records Center, SEE-IN Institute of Nuclear Power Operations 1100 Circle 75 Parkway, Suite 1500 Atlanta, Georgia 30339
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