ML19350D843

Deficiency Rept,Originally Reported on 810415,re motor- Operated Valves Mfg by Anchor/Darling Valve Co & Installed in Rhr.All Defective Components Will Be Replaced by Late Jul 1981

ML19350D843
Person / Time
Site:	Shoreham File:Long Island Lighting Company icon.png
Issue date:	05/11/1981
From:	Novarro J LONG ISLAND LIGHTING CO.
To:	Grier B NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
References
10CFR-050.55E, 10CFR-50.55E, IEB-80-21, SNRC-562, NUDOCS 8105190442
Download: ML19350D843 (2)

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.- LONG ISLAND LIGHTING COM PANY

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• WADING RIVER. N.Y.11792 SNRC-562 May 11, 1981 \ >

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Region 1O ! ' gfs -f Mr. Boyce H. Grier Office of Inspection and Enforcement, 5,- /

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g LONG ISLAND LIGHTING COMPANY SHOREHAM NUCLEAR POWER STATION - UNIT 1 DOCKET NO. 50-322

Dear Mr. Grier:

On April 15, 1981, in accordance with 10CFR50.55 (e) , we reported verbally to Region 1, a deficiency with motor-operated valves manufactured by Anchor / Darling valve Company installed in our Residual Heat Removal System (RHP). This letter serves a*: our 30 day written report of this deficiency.

Description of Deficiency The NRC via I&E Bulletin 80-21 advised of the possibility of having active valves in safety related systems containing parts cast by Malcolm Foundry Company Inc. which could contain potentially faulty material. In response to the bulletin, LILCO informed the NRC via letter SNRC-527 dated January 6, 1981 that ten (10) valves supplied by Anchor Darling contained components supplied by Malcolm Foundary, all of which are located in the Residual Heat Removal System. Our response indicated that a test and evaluation program would be utilized to determine mechanical properties of questionable parts with subsequent replacement of defective material, if required.

Attempts by Anchor Darling to fully define the mechanical properties of the questionable components have been unsuccessful.

Accordingly, it must be assumed that the material is defective requiring replacement of all identified components. The identified components are as noted below:

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l Mr. Boyce H. Grier May 11, 1981 Page Two Valve Mark No. Malcolm Foundary Parts lEll*MOVO31A-D Yoke lEll*MOVO32A-D Yoke lEll*MOVO36A-B Disc Skirt Nut lEll*MOVO36A-B Yoke Clamp lEll*MOVO36A-B Stem Clamp A review concerning consequence imposed by failure of any of the identified components has been completed. The result of this review is that failure of any of these components could impact operation of the RHR system and thereby jeopardize safety.

Corrective Action All components as heretofore identified will be replaced at Shoreham pending receipt of parts from Anchor / Darling Valve Company in late July 1981.

Very truly yours,

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s J. P. Novarro Project Manager Shoreham Nuclear Power Station HE/gmm cc: Mr. Victor Stello, Director NRC Office of Inspection and Enforcement Division of Reactor Operations Inspection Washington, D.C. 20555 Mr. J. Higgins 1 Site NRC Trailer