ML20203N235

Part 21 Rept Re Defective Terry Corp Emergency Head Lever Supplied for Auxiliary Feed Pump.Defective Parts Never Installed in Facility & Returned to Mfg.Replacement Parts Installed

ML20203N235
Person / Time
Site:	Cook
Issue date:	09/18/1986
From:	Alexich M INDIANA MICHIGAN POWER CO. (FORMERLY INDIANA & MICHIG
To:	Taylor J NRC OFFICE OF INSPECTION & ENFORCEMENT (IE)
References
REF-PT21-86, REF-PT21-86-310-000 AEP:NRC:0971A, AEP:NRC:971A, PT21-86-310, PT21-86-310-000, NUDOCS 8609230228
Download: ML20203N235 (2)

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INDIANA & MICHIGAN ELECTRIC COMPANY P.O. BOX 16631 COLUMBUS, OHIO 43216 September 18, 1986 AEP:NRC:0971A 10 CFR 21:0058 Donald C. Cook Nuclear Plant Unit Nos. 1 and 2 Docket Nos. 50-315 and 50-316 License Nos. DPR-58 and DPR-74 DEFECTIVE EMERGENCY HEAD LEVER SUPPLIED FOR AUXILIARY FEED PUMP Mr. James Taylor, Director Office of Inspection a:id Enforcement U.S. Nuclear Regulatory Commission 1717 H Street Washington, D.C. 20555

Dear Mr. Taylor:

This letter is to confirm the telephone conversation of September 12, 1986 vetween Messrs. J. Feinstein, G. Hines, and P. Barrett of American Electric Power Service Corporation and Mr. George Lanik of the Office of Inspection and Enforcement, regarding notification made pursuant to 10 CFR Part 21. Mr. Lanik stated that submission of this letter by September 18, 1986 was acceptable. Based on our safety evaluation of September 12, 1986, we concluded that the subject defect had the potential for causing a substantial safety hazard.

Specifically, we reported that we had received parts for our auxiliary feedwater pump turbines which contained a defect. The parts were two emergency head levers (Part #82262B, Drawing #86205D) supplied by Terry Corporation of Windsor, Connecticut. The levers were improperly machined such that the surface whien seats against the tappet nut was curved instead of being flat.

The defective parts (levers) were never actually insralled in the D. C.

Cook Plant. Thus, there was no adverse safety impact caused by these defective parts on D. C. Cook Plant. With the turbine's mechanical overspeed trip reset, the defective levers could have caused the operating pump to inadvertently trip. This would have prevented a continuous supply of auxiliary feedwater from the Turbine Driven feedwater pump to the plant steam generators in the event it was required.

The defective parts were returned to the manufacturer. Nondefective replacement parts were sent to the D. C. Cook Plant and installed.

We do not have specific knowledge of whether or not defective parts of this type have been supplied to other utilities.

8609230228 860918 CE(pl$

PDR ADOCK 05000315 S PDR I O

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Mr. Jr.mes Tsylcr AEP:NRC 0971A This document has been prepared following Corporate procedures which incorporate a reasonable. set of controls to insure its accuracy and completeness prior to signature by the undersigned.

Very trul your ,

M. P. .exich (t Vice resident cm cc: John E. Dolan W. G. Smith, Jr. -' Bridgman R. C. Callen G. Bruchmann G. Charnoff NRC Resident Inspector - Bridgman i

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