ML17252B015

Letter Confirming a 11/06/1972 Conversation Concerning HPCI System Inoperability - Dresden Unit 3

ML17252B015
Person / Time
Site:	Dresden
Issue date:	11/06/1972
From:	Worden W Commonwealth Edison Co
To:	Giambusso A US Atomic Energy Commission (AEC)
References
Download: ML17252B015 (1)

Text

RB TWX NR 673 USAEC HQS GTWN

• WU WSH _ 50-'249 TLXA240 11/06/72 1931 MVN ' ZCZC 00290 TOVE MORRIS ILL 114 11-06 346P CST file Cy. PMS MR A GIAMBUss6 DEPUTY DIRECTOR FOR REACTOR PROJECTS OF US ATOMIC ENERGY COMMISSION WASHINGTON DC 20545 . , SUBJECT DPR-25 DRESDEN NUCLEAR POWER STATION UNIT 3 THIS WILL CONFIRM A WITH MR H OF YOUR OFFI6E AT 1430 HOURS THIS DATE* CONCERNING HPCI SYSTEM INOPERABILIJY.

AT 0240 NOVEMBER 6 1972, WHILE CONDUCTING POST MAINTENANCE SURVEILLANCE DURING UNIT HPCI STEAM VALVE 2-2301-4 IN THE DRY WELL WOULD NOT OPEN. ALTHOUGH THE START-UP AND HEAT-UP WERE. HALTED AT .. THIS THE REACTOR PRESSURE DRIFTED UP TO ABOUT 100 LBS INVESTIAGION OF THE .VALVE PROBLEM. AT 0330, SHIFT BEGAN' A SHUT DOWN OF THE UNIT. AT 0405 , WITH REACTOR PRESSURE 77PSIG AND SUB-CRITICAL VALVE -TESTED SATISFACTORILY AT 0415 RESUMED START-UP

• SATISFACTORtLY TESTED HPCI AT P730 AT MINIMUM ST.E.AM PRESSURE OF 110 PSI .... ---* W P WORDEN SUPERINTENDENT

• DRESDEN NUCLEAR POWER STATION COMMONWEAL TH ED I SON RURAL ROUTE. 1 MORRIS ILLINOIS E 800-AEST USAEC HQS GTWN / -' 6096'