ML17252B014

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Letter Confirming a 11/06/1972 Conversation Concerning the Failure of HPCI Steam Valve 2-2301-4 in the Dry Well to Open - Dresden Unit 3
ML17252B014
Person / Time
Site: Dresden Constellation icon.png
Issue date: 11/10/1972
From: Worden W
Commonwealth Edison Co
To: Grier B
US Atomic Energy Commission (AEC)
References
Download: ML17252B014 (2)


Text

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REGULATORY OPERATIONS, REGION III A.

RO Inspection Report No.

Transmittal Date Distribution:

RO Chief, RT&OB or RO Chief, RCB RO:HQ (5)

DR Central Files Regulatory Standards (3)

Licensing (13)

B.

RO Inquiry Report No.

Transmittal Date

(

Distributio::l:

RO Chief,

~1'.::'&0B or RO Chief, RCB ( 2)

RO:HQ (5)

DR Central Files Regulatory Standards (3)

Licensing (13)

Distribution:

RO Chief, M&FFB RO:HQ (4)

L:D/D for Fuel & Materials DR Central Files Distribution:

~o Chief, M&FFB RO:HQ DR Central Files C.

Incident Notification From: fkmmMiil=fJH &/,.Q.Jrn-.

()cJJffo S!J-JV°i (Licensee & Docket No. (or License No.)

Transmittal Date Distribution:

RO Chief, RT&OB or RO Chief, RCB RO:HQ (4)

Licensing (4)

DR Central Files Distribution:

RO Chief, M&FFB RO:HQ (4)

L:D/D for Fuel & Materials DR Central Files

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HJOPERABIL ITY

  • AT 0240

~.JQ VEMBErr 6 1972, UH ILE CONDUCT I ~l POST MAINTENANCE SURVEILLANCE DURING UNIT START-UP, THE HPCI STEAM VAL VE 2-230 1-4 IN THE DRY WELL WOULD

~JOT OPEN. ALTHOUGH THE STARTUP AND HEAT-UP WERE HALTED AT THIS TIME, THE REACTOR PRESSURE DRIFTED UP TO ABOUT 100 LBS OURH~G HNESTIAClION 0~0fVl~ v19.7?E PROBLEM. AT 03)0, THE SF-1201 (RS-69)

SHIFT BEGAN A SHUT-DOWN OF THE UNIT. AT 0405, WITH REACTOR PRESSURE 77PSIG AND SUB-CRITICAL, VALVE TESTED* SATISFACTORILY.

AT0415 RESUMED START-UP. SATISFACTORILY TESTED HPCI AT 0730 AT MINIMUM STEAM PRESSURE OF 110 PSI U P WORDEN SUPERINTENDENT DRESDEN NUCLEAR POWER STATION COMMO~,JWEALTH EDISON RURAL ROUTE 1 MORRIS ILLINOIS SF-1201 (~9) l

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