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

• UNITED STATES ATOMIC ENERGY COMMISSION DIRECTORATE OF REGULATORY OPERATIONS REGION Ill I

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799 ROOSEVELT ROAD TELEPHONE GLEN ELLYN,, ILLINOIS 60137 (312) 858-2660 A. RO Inspection Report No.

Transmittal Date . '

Distribution: Distribution:

RO Chief, FS&EB RO Chief, FS&EB RO:HQ (5) RO:HQ (4)

DR Central Files L:D/D for Fuels & Materials Regula.tor,y Standards (3) DR Central Files Licensing (13) RO Files l-RO Files J.

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B. RO Inquiry Report No. '

Transmittal Date Distribution: Distribution:

RO Chief, FS&EB RO Chief, FS&EB RO:HQ (5) RO:HQ DR Central Files DR Central Files Regulatory Standards (3) RO Files Licensing (13)

RO Files (' -

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

Transmittal Date February 26, 1974 Distribution: Distribution:

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

Licensing (4) L:D/D for Fuels & Materials DR Central Files DR Central Files RO Files RO Files

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'PMS MR JAMES G KEPPLER - - "'

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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

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OF'F ICE AT 1300 HOURS FEBRUARY 20 197-4 CONCERlNG -~

EXPLOSION IN THE OFF GAS.SYS~EM~--

~4 APPROXI MATED 11s25 FEBRUARY: 20- 197 4 *AN £X.PLOS ION OCCURED IN THE* UNIT 3 SJA~ ROOM UNIT WAS ON SYSTEM AT

.C*- APPROXIMATELY 90 PERCENT :-POWER, IT TOOK ABOUT 20 a

MINUTES TO DETERMINE THE EXACT NATURE OF THE PROBLEM .

C._ SF-1201 (R>69)

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c ANB AT THAT TIME A*RA~ID LOA~ DROP WAS INITIATED FOLtOWED BY MANUAL SCRAM AT 12108

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c EVACUATION.SIREN WAS SOUNDEP AT 1157 AND ALL PERSONNELS

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

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

• REMOVED A TESTED FILTER FROM UN IT 2 AND ?REPARING TO INSTALL --U.:

• 1.!'J c BROOOHT REACTOR C!UTICAl IN HOT STAND BY MODE TO AWAIT 0

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COMPLETION OF FILTER REAP~I R c *.

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~UfERlNI~NltNl pRESDER NUCLEAR POWER, STAT.ION

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