ML19338F839

Submits Addl Response to IE Bulletin 80-09, Hydramotor Actuator Deficiencies. Vendors Currently Performing Actuator Testing to Determine Min Capabilities

ML19338F839
Person / Time
Site:	Satsop
Issue date:	09/22/1980
From:	Renberger D WASHINGTON PUBLIC POWER SUPPLY SYSTEM
To:	Thornburg H NRC OFFICE OF INSPECTION & ENFORCEMENT (IE)
References
GO3-80-2291, IEB-80-09, IEB-80-9, NUDOCS 8010270374
Download: ML19338F839 (2)

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4 A JOINT OPERATING AGENCY.

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September 22, 1980 iG03-80-2291 2

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. Docket Nos.-

50-508 50-509 Mr. H. D. Thornburg.. Director U. S.< Nuclear Regulatory Commission

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. Reactor Construction Inspection

<m Office of Inspection' and Enforcement

' Washington, D.C. -20555;

Subject:

WPPSS NUCLEAR PROJECT NOS. 3 AND 5

' RESPONSE TO IE BULLETIN 80-09

-Ref:-

Letter, ser. G03-80-1521, D. L.

Renberger(WPPSS) to H. D.-Thornburg (NRC), same subject. -dated June 25, 1980.

1 The referenced letter forwarded the' Supply System's initial response to IE Bulletin 80-09, "Hydramotor Actuator Deficiencies." In that letter, we indicated that the two contractors who supplied.the subject ITT General Control (ITT GC) actuator models, Valtek Inc. and American l Warming'and Ventilating Company. had been requested to review and re-

- evaluate the actuator designs and to. report any corrective actions

- being taken by August-31,1980. This~1etter is intended to provide Lyou'with an update-of the status of vendor responses to our requests.

v American Warming and Ventilating Company (AWV) it supplying twenty-5 eight ITT-GC actuators with a No. I spring for usc in a damper actuating e

applibation.- As mentioned in the subject Bulletin, ITT-GC is currently N,;

4 performing actuator testing to ' determine their minimum capabilities.

AWV will' compare each damper torque requirement against the ~ITT-GC F Jtests'. statistical minimum output data, which will include a penalty

for. the maximum lossyin spring-output;due to the use of 1060-1070 steel springs.. If the: actuators-cannot be shown to develop sufficient thrust to meet theidamper torque requirements, they will be returned to ITT-GC-for any necessary modifications.

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U. S. Nuclear lRegdlathry Comissioni Fw-Page Two

Response to IE: Bulletin 80 '

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.Valtek Inc. is also awaiting'the results from the.ITT-GC test program prior to confirming:their actuators are adequately sized.

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Very truly yours,.

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j D.:Le Renberger-

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L Assistant' Director, Technology

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bk cc:. R. H. Engleken, NRC, ROV

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W. Woods, NUS' N. S.'Reynolds, D&L'

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