ML20082B419

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Interim Deficiency Rept U-64 & Part 21 Rept Re Damage to PC-40 Motor Pinion & PC-41 Clutch Gear in SB-2-80-type Limitorque Valve Actuator.Initially Reported on 831017.Gears Replaced.Westinghouse Evaluating Corrective Action
ML20082B419
Person / Time
Site: Callaway Ameren icon.png
Issue date: 11/11/1983
From: Schnell D
UNION ELECTRIC CO.
To: James Keppler
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
References
REF-PT21-83 10CFR-050.55E, 10CFR-50.55E, U-64, ULNRC-684, NUDOCS 8311210183
Download: ML20082B419 (1)


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- 3m UNION ELECTRIC COM PANY 1901 GRATIOT STREET l ST. Louis, MISSOURI November-11, 1983 ..iciNo oo. .. ..

DONALO F. .CHN.LL P. O. .ox ist <

. . . . . . . . . , .r. toui .. u ..ou .i . . ..

Mr. James G. Keppler Regional Administrator U.S. Nuclear Regulatory Commission Region III ULNRC-684 799 Roosevelt Road

, Glen Ellyn, IL 60137 l

Dear Mr. Keppler:

, INTERIM 10CFR50.55 (e)/21 REPORT NO. U-64

, CALLAWAY PLANT UNIT 1 4 On October 17, 1983, Union Electric reported a 10CFR50.55(e)/21 deficiency to P. Pelke, NRC Region III. The deficiency involves damage to the PC-40 motor Pinion and PC-41 Clutch Gear in the SB-2-80 type Limitorque valve actuator. The valves affected are 8811A, B and 8812A, B.

4 Union Electric has had a Limitorque field service engineer inspect the actuators, and in the interim Union Electric is i replacing the damaged gears with new gears with a different heat treatment.

4 Union Electric has also requested Westinghouse to evaluate this situation and supply us with the appropriate action concerning this Limitorque actuator situation. If further action is found to be necessary due to the Westinghouse evaluation, that action will be pursued at that time.

A final report on this issue will be forthcoming within sixty days of the date of this letter.

s Very truly yours, 8311210183 831111 PDR ADOCK 05000483 1 l

S PDR , C 6

OL Donald F. Schnell.

TEH/efh i cc: J. E. Konklin, NRC Region III .

Richard DeYoung, Director I&E NRC' Resident Inspectors, Callaway Plant (2) k/q(\.

Missouri Public Service Commission s)0 b d NOV 141981

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