ML20084U144

Telecopy Ro:On 720801,during Routine Surveillance on High Steam Line Flow Isolations Sensor Breaker for Valve MO3-1301-1 Tripped When Valve Attempted to Close.Cause Unknown.Investigation Underway

ML20084U144
Person / Time
Site:	Dresden
Issue date:	08/02/1972
From:	Worden W COMMONWEALTH EDISON CO.
To:	Bloch E US ATOMIC ENERGY COMMISSION (AEC)
Shared Package
ML20084U135	List: ML20084U132 ML20084U139 ML20084U144 ML20084U147 ML20084U377
References
NUDOCS 8306270070
Download: ML20084U144 (1)

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T.d I S IS TO CONFIRM A CO A">ERSAT IC M U IT i 11R ri DANCE OF YO'J 00FFICE AT 1010 's.0URS THIS DATE CONCERNING A FAILURE OF THE ISOL ATION CONDE lS_

ER I' '7D STEAM ISOLATION VALVE ricy-i.,0I-1 TO ClOSE DURING ROUTINE

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BEIPG CONDUCTED ON THE HIGH STEAM LIf:E FL3b ISCLATI1NS RENS0E -

0F T'iE ISOLATION CONDESNER.

Thi BTCAKER FOR VALVE 303-1301-1 TRIPoED AS THE '!ALVE ATTE!!PTE'. TO ,

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SdWJIFl. LANCE TESTS AMD AT LEAET 5 M M1AL 0?ERATIONF OF THIS. VALVE WERF CONDUCTED CATISFACTORILv.

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