ML20084E863

Telecopy Message of Ao:On 701014,gate Valve 851A Failed to Fully Close.Caused by Loose Stem Nut Locking.Lock Tightened & Stem Lubricated

ML20084E863
Person / Time
Site:	Ginna, 05000000
Issue date:	10/14/1970
From:	Platt C ROCHESTER GAS & ELECTRIC CORP.
To:	Kirkman R US ATOMIC ENERGY COMMISSION (AEC)
Shared Package
ML20084E846	List: ML20084E851 ML20084E856 ML20084E863
References
NUDOCS 8304150594
Download: ML20084E863 (2)

Text

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• ROUTE SLIP < Sa me about this. For concur For action.

A > Form AEC-93 (Rev. May 14.1947) AECM . 40 Note and return. For slanature. For Information.

' (Name and unit) nunALS REa4 ARKS

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Re: ROCHESTER GAS & ELECTRIC CORPORATION f' J. P. O'Reilly j CO:HQ DArE DOCKET NO. 50-244 Attached are the original and three copies of the I . TO (Name and unit) INITIALS Rr_ MARKS telegraphic report from RG&E which are being forwarded l oAn in accordance with PI 1000/3. The incident was also discussed in Inquiry Memorandum No. 244/70-J. I To (Name and unit) peTIALS REMARKS l

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R W KIRKMAN, DIRECTOR REGION ONE DIVN OF COMPLI ANCE

. USAEC 970 BROAD ST NEWARK NJER THIS IS TO CONFIRM MY CONVERSATION AT 1600 THIS DATE WITH D0YLE HUf411 CUTT IN REGARDS TO A MALFUNCTION OF AN ENGINEERED SAFEGUARD VALVE AT GINNA STATION. THE PLANT WAS BEING BROUGHT UP TO A HOT SHUTDOWN CONDITION AT 0600 THE OPERATOR TRIED TO CLOSE GATE VALVE .#851 A, THE VALVE CLOSED PARTIALLY AND THEN STOPPED. .-

INVESTIGATION FOUND THE STEM NUT LUCKING NUT LOOSE ON THE LIMITORQUE OPERATOR. THE LOCK NUT WAS TIGHTENED THE STEM WAS LUBRICATED AND THE VALVE WAS THEN OPERATED SUCCESSFULLY SEVERAL TIMES f

CHARLES E PLATT SUPR ROCH GAS AND ELC 1600

0600 #851 A LIMITORQUE .

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