ML17238A726

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Letter Regarding Failure of the HPCI Turban to Reset on Friday 5/19/1972
ML17238A726
Person / Time
Site: Dresden Constellation icon.png
Issue date: 05/22/1972
From: Worden W
Commonwealth Edison Co
To: Block E
US Atomic Energy Commission (AEC)
References
Download: ML17238A726 (2)


Text

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T 1972 MAY 22 PM II IQ + USAEC HQS !3TWN WU WSH TLXA236 c36>0EA116 DE JLA248 IM PDB MORRIS ILL 22 321P CDT E J ~LOCK DIRECTOR OF REACTOR LIS U S ATOMIC ENERGY C0Mi'*1I.SS I ONN WASH DC I. DPR-25DRESDEN NUCLEAR POWER STATION UNIT 3. THIS WILL CONFIRM CONVERSATION AT 1300 HOURS ~HIS ,DATE WITH H DANCE REGARDING FAILUR~ OF THE HPCI QURBAN TO RESET, ON FRIDAY 5-19-72 THE HPCI TURBAN WOULD NOT RESET FROM THE CONTROL ROOM WHEN CONDUCTING THE MONTHLY TURBAN SURVEILLANCE THE TURBAN WAS RESENT *LOCALLY AND THE SURVE1LLAN TEST WAS THEN CMPLETED I PHE INDICATING LIGHT WHICH MONITORS THE CONTINUITY OF THE

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RESET CIRCUIT WAS'ENEGIZED AND .. INDICATED A NORMAL CONDITION* ON SATURDAY, 5-20-72 AN ELECTRICIAN FOUND A ~OOSE WIRE I~ THE TURBAN RESET SOLENOID THE WIRE WAS RECONNECTED ..... 8 Y 6PM SATUROt\Y* THIS SITUATION WOULD PROBABLY PREVENTED HPCI F.ROM INITIATING UNDER ACCIDENT CONDITIONS* NtW SOLENOibS HAVE BEEN ORDERED AND WILL 8E REPLACED ON BOTH UNITS 2&3 1 W P WARDEN PLANT SUPT DRESDEN STATION* I DPR-25 3 1300 HPCI 5-19-72 HPCI 5-20-72. 6PM HPCI 2&3.C411> AXX MAY 22 lll3P

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