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 WAF182C1932)(1~033079C311)PD 11/06/72 1931 Ics~IPMVEIG MVN '

ZCZC 00290 TOVE MORRIS ILL 114 11-06 346P CST *R~gulatory file Cy.

PMS MR A GIAMBUss6 DEPUTY DIRECTOR FOR REACTOR PROJECTS DI~ECTORATE OF LICE~SING US ATOMIC ENERGY COMMISSION WASHINGTON DC 20545 . ,

SUBJECT DPR-25 DRESDEN NUCLEAR POWER STATION UNIT 3 THIS WILL CONFIRM A CO~VERSATION WITH MR H DL~NCE OF YOUR OFFI6E AT 1430 HOURS THIS DATE* CONCERNING HPCI SYSTEM INOPERABILIJY. AT 0240 NOVEMBER 6 1972, WHILE CONDUCTING POST MAINTENANCE SURVEILLANCE DURING UNIT START~UP,.tHE HPCI STEAM VALVE 2-2301-4 IN THE DRY WELL WOULD NOT OPEN. ALTHOUGH THE START-UP AND HEAT-UP WERE. HALTED AT .. THIS TIM~, THE REACTOR PRESSURE DRIFTED UP TO ABOUT 100 LBS DU~ING INVESTIAGION OF THE

.VALVE PROBLEM. AT 0330, TH~ 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'