ML17252A922

Letter Confirming a 02/20/1974 Conversation Concerning an Explosion on 02/20/1974 in the Unit 3 SJAE Room - Dresden Unit 3

ML17252A922
Person / Time
Site:	Dresden
Issue date:	02/26/1974
From:	Worden W Commonwealth Edison Co
To:	James Keppler US Atomic Energy Commission (AEC)
References
Download: ML17252A922 (3)

Text

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UNITED STATES ATOMIC ENERGY COMMISSION DIRECTORATE OF REGULATORY OPERATIONS REGION Ill 799 ROOSEVELT ROAD GLEN ELLYN,, ILLINOIS 60137 RO Inspection Report No.

Transmittal Date Distribution:

RO Chief, FS&EB RO:HQ (5)

Distribution:

RO Chief, FS&EB RO:HQ (4)

TELEPHONE (312) 858-2660 DR Central Files Regula.tor,y Standards (3)

L:D/D for Fuels & Materials DR Central Files Licensing (13)

RO Files RO Files B.

RO Inquiry Report No.

Transmittal Date Distribution:

RO Chief, FS&EB RO:HQ (5)

DR Central Files Regulatory Standards (3)

Licensing (13)

RO Files Distribution:

RO Chief, FS&EB RO:HQ DR Central Files RO Files C.

Incident Notification From: Commonwealth Edison Co. Docket No. 50-249 (Licensee & Docket No. (or License No.)

Transmittal Date Distribution:

RO Chief, FS&EB RO:HQ (4)

Licensing (4)

DR Central Files RO Files

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February 26, 1974 Distribution:

RO Chief, FS&EB RO:HQ (4)

L:D/D for Fuels & Materials DR Central Files RO Files I l.

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.lC.S.IPMVEIA MVN 01125. TOVE MORRIS *-ILL t 69 02*21 10.Q2GP,CDT

'PMS MR JAMES G KEPPLER REGIONAL DlRCTOR DIREC)"ORATE-fOF n'EG-ULARTQRY OP£RA;TIONS :REGION 3.' -

-WUX US--ATOMIC ENERGY COMMISSION 799-ROOSEVELT-ROAD GLEN ELYN ILL 60137

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-**t>P:R~25 DRESDEN PJUCLEAR POWER STATION UNIT*~

THIS WILL CONFIRM OUR CONVERSATIOrJ WITH MR F' MAUP.A OF YOUR OF'F ICE AT 1300 HOURS FEBRUARY 20 197-4 CONCERlNG EXPLOSION IN THE OFF GAS.SYS~EM~--

APPROXI MATED 11s25 FEBRUARY: 20- 197 4 *AN £X.PLOS ION OCCURED IN THE* UNIT 3 SJA~ ROOM UNIT WAS ON SYSTEM AT APPROXIMATELY 90 PERCENT :-POWER, IT TOOK ABOUT 20 MINUTES TO DETERMINE THE EXACT NATURE OF THE PROBLEM.

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c ANB AT THAT TIME A*RA~ID LOA~ DROP WAS INITIATED FOLtOWED BY MANUAL SCRAM AT 12108 EVACUATION.SIREN WAS SOUNDEP AT 1157 AND ALL PERSONNELS WERE*PRO~PTLY ACCOUNTED FOR

£STABLISH£D-COMTROLLED'PERIMITER*AND~HECKED AJU:*AS :_.FOR CONTAMINATION APP ROCH ING UNIT ~ ST-EAL*JET.

AIR EJECTOR ROOM FOUND. NO COMTAMIN.ATlON EXCEPT FOR AIR EJECTOR ROOM THEMSELVES ONLY EQUIPMENT DAMAGE NOTED WAS THE OFF GAS FLITERS AND AIR EJ£CTOR RUPTURE DISC

• REMOVED A TESTED FILTER FROM UN IT 2 AND ?REPARING TO INSTALL BROOOHT REACTOR C!UTICAl IN HOT STAND 0 BY MODE TO AWAIT COMPLETION OF FILTER REAP~I R V P WRDEN

~UfERlNI~NltNl pRESDER NUCLEAR POWER, STAT.ION

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