ML17238A727

Letter Regarding Failure of the HPCI Turban to Reset on Friday 5/19/1972

ML17238A727
Person / Time
Site:	Dresden
Issue date:	05/22/1972
From:	Worden W Commonwealth Edison Co
To:	Grier B US Atomic Energy Commission (AEC)
References
Download: ML17238A727 (2)

Text

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105? EST .MAY -22 7-2 -DEA60-1 DE JLA247 IM PDF MORRIS ILL 22 321P CDT.

BOYCE GRIER, DIRECTOR. DIVN OF COMPL IANC_E d ( T ,..., c r:- ..-v-v; ,,, 1.'. .:.-;J-

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. REGION 111 US ATOMIC ENERGY COMMISSILN 799 ROOSEVELT RD GLENELLYN ILL 50137 DPR-25 DRESDE:N NlJCLEAR POWER STATION UNIT 3o THIS WILL CONFIRM CONVERSATION AT 1300 HOURS THIS DATE WITH H DANCE REGARDING FAILUHE OF THE HPCI QURBAN TO RESET, ON FRIDAY 5-19-7 2 THE HPCI TURBAN WOULD NOT RESET FROM THE CONTROL ROOM WHEN CONDUCTING THF: ~iONTHLY TURBAN SURVEILLANCE THE TURBAN WAS RESENT LOCALLY AND THE SURVEILLANCE TEST WAS THEN *CMPLETED PHE INDICATING LIGHT WHICH MONITORS THE CONTINUITY OF THE RSET CIRCUIT t*!AS ENEGIZED AND INDICATED A NORMAL CONDITION *

. ON SATURDAY, 5-20-72 AN ELECTRICIAN FOUND A LOOSE WIRE IN THE

'J WRBAN RESET SOL:ENOip THE WIRE WAS RECONNECTED B Y i$PM SATUKDAY o SF-1201 (RS-69)

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THIS SITUZTION WOULD PROBABLY PREVENTED HPCI FROM INITIATING UNDER ACCIDENT CONDITIONS. NEW SOLENOIDS HAVE BEEN ORDERED ANDWILL EE REPLACED ON BOTH UNITS 2&3 W P WARDEN OLANT SUPT DRESDEN STATION DPR-25 3 1300 HPCI 5-19-72 HPCI 5-20-72 6PM HPCI 2&3. (411>

SF-1201 (RS-69)

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