ML20079J609

Final Deficiency Rept Re Potential Defect in Starting Air Sys Check Valve Mfg by Transamerica Delaval.Initially Reported on 811218.Check Valve Disc Assembly Will Be Replaced by 830701

ML20079J609
Person / Time
Site:	Perry
Issue date:	12/15/1982
From:	Edelman M CLEVELAND ELECTRIC ILLUMINATING CO.
To:	James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
References
10CFR-050.55E, 10CFR-50.55E, RDC-43(82), NUDOCS 8212280291
Download: ML20079J609 (2)

Text

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< THE CLEVELAND ELECTRIC !LLUM!N TT!H G COMF ANY P.O. BOX $000 - CLEVELAND. OHIO 44101 - TELEPHONE (216) 622 9800 - ILLUMINATING BLDG. - 55 PUBLICSQUARE Serving The Best i.ocation in the Nation h0RRAY R. EDELMAN

%dCE MIESIDENT NUCMAR December 15, 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 Docket Nos. 50-440, 50-441; Standby Diesel Generators Model DSRV16:

Potential Defect in Starting Air System Check Valve (RDC 43(82))

Dear Mr. Keppler:

This letter serves as a Final Report pursuant to 10CFR50.55(e) concerning a potential defect in the standby diesel engines supplied by Transamerica DeLaval, Inc. (TDI).

The Cleveland Electric Illuminating Company originally reported this item to your office on December 18, 1981. Subsequent correspondence included our interim report dated January 8, 1982, and letters dated February 25, 1982, May 28, 1982 and September 1, 1982. This letter provides results of our evaluation.

DESCRIPTION OF DEFICIENCY In their letter dated November 5, 1981, Transamerica DeLaval, Inc. reported to the Nuclear Regulatory Commission that a potential defect reportable under 10CFR21 had been discovered in their diesel engine generator system. The potential defect con-cerns a 1-1/2 inch check valve manufactured by the Wm. Powell Co., Cincinnati, Ohio, installed in the starting air system between the starting air compressor and the starting air storage tanks. During seismic qualification testing, one of these valves was found to leak. The valve is classified safety-related and designed in accordance with ASME Code Section III, Class 3.

The Perry Nuclear Power Plant has four diesel generators which include this valve, identified as Wm. Powell Co. Figure 2346, and they are installed in the diesel genera-tor starting air system (R44). The total number of valves in question at PNPP is eight.

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Mr. James G. Keppler - December 15, 1982 ANALYSIS OF SAFETY IMPLICATION The function of the subject valves is to allow the starting air compressor to charge

'the air storage tank'and then to prevent back flow once the tank is charged. Failure cf the starting air check valve could result in engine non-availability.

CORRECTIVE ACTION Transamerica DeLaval Inc. has provided'CEI with the necessary information for the nodification of Wm. Powell check valve. -The modified check valve has passed seismic qualification.

The corrective action is to replace the existing disc assembly in the check valve.

DeLaval has ordered the appropriate parts for the modification of the valve. The scheduled date of completion for replacement of the parts is July 1,1983.

Please call if there are any additional questions.

Sincerely, Murray R. Edelman Vice President MRE/llp cc: Mr. M. L. Gildner 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 Document Management Branch Washington, D. C. 20555

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