ML17252A983

Letter Confirming a 04/23/1973 Conversation Concerning a Loss of Secondary Containment Integrity for a Period of Approximately 6 Hours on 04/19/1973 - Dresden Unit 3

ML17252A983
Person / Time
Site:	Dresden
Issue date:	04/25/1973
From:	Worden W Commonwealth Edison Co
To:	Grier B US Atomic Energy Commission (AEC)
References
Download: ML17252A983 (2)

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UNITED STATES ATOMIC ENERGY COMMISSION DIVISION OF COMPLIANCE REGION Ill 799 ROOSEVELT ROAD TEU::PHONE GLEN ELLYN, ILLINOIS. 60137 * (31 Z) 8 58-2660 REGULA TORY OPE RAT IONS , REG ION II I A. RO Inspection Report No.

Transmittal Date Distribution: Dis tribu tiOn:

. RO Chief, RT&OB or RO Chief, RCB RO Chief, M&FFB RO: HQ (5) :~ *. RO:HQ (4)

DR Central )i.~il~s L:D/D for Fuel & Materials Regu*latory'"\?_tandards ( 3)

• DR Central Files.

Licensing ( 13) ;I

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B. RO Inquiry Report No. . ~ .: .

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Transmittal Date I

• Ii Distribution: Distribution: I RO Chief, RT&OB or RO Chief, . RCB ( 2). RO Chief, M&FFB l RO:HQ (5). .,i*

DR Central Files RO:HQ DR Central Files .'!:

Regulatory Standards (3) .I

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Licensing ( 13) *. . II .

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c. Incident Noti£ication From: Commonwealth Edison DPR-25 ;jz}.; ~'/1  !

(Licensee & Dock~t No. {or Licerise No.) .{

i Transmittal Date April 25, 1973 L

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Distribution: l)istribution: ... .\" 'I ..

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.RO Chief, RT&OB or RO Cpief, ~CB

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RO:HQ (4) RO:HQ (4) \.

Licensing (4) L:D/D for Fuel ~Materials . i '

DR Central Files DR Central Fil~s

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04/23/73 1707

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( J1134 TOVE MORRIS ILL 161 04-23 344P CST c PMS MR BOYCE GRIER, DIRECTOR DIV OF CO~?LIANCE REG IO~ 3.

( U S AT.oi*nt i::N£R3Y COl ilHS.3ION 799 ROOSEVELT RODAJ WUX 1 c GL~~N ELLt~ ILL 60137

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SLi3JiCI DPR-25 DRESDEN NUCLEAR ?O~ER SIAilON UNIT 3 *

.lril.::J r,vlLL COi'iFIRl-1 A COiNEKSAIION VilifMR HUGH DAi'JCE OF *YOUR OPFICE

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( Hf 1300 ~OURS THIS JATE CONCERNIN3 A LOSS OF SECONJARY CON~AINMENT (

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. INTESRIIY FOk A PERIOD OF APPROXI~ATELY 6 HOURS.

c JN PARIL 19, 1)73 AI A?PRO,\HlATELY 1600 HOURS Ul\IT 3 t"IAIN .:>TEAi1 .*

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ISOLATION VALVE.C~3IV>3-203-2B WAS OPENED FOR INSPECTIO~ OF VAL~E

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INIERNALS. SINC2~THE UNIT-3 TURBINE STOPPED VALVE5 WERE ALSO : '*

Dl.3A.S3E:i*1BLED AT T}i£ TH!E, A FLOW ?ASS EXISTED FROifi THE TURBINE

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BUILD1NG IHROUGHSTEAM LINES 3~30013~2~ *INCH AND THE* DISASSEMBLED 28 * ..

ti SI 'v' INTO TH.:: UNIT 3 i1A IN STEAM LINE TUNNERL 'iiH ICH IS A ?ART OF' ,

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( . SF-1201 (RS-89)

APR 2 5 1973

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( IhE 3E~ONJARY CONTAI~MENT. IHI3 to~DiTION EXI~T£0 LijJlL,A?PROXI~ATiL

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2200 l-iOUR.3 ON APRIL 19, 1::173 WhZN A BLH~J F'LA;~.3~ Wf't3 lN.3TALl..iD'0N 2.B JSIV Ri30IRI~~ SECJ~DAR~ CONTAI~NEN1 INTEGRITY. A~AINIANENCE ?ROCiuU K.c:.

. CHANG£ WILL BE IS~~~O TO PREVENT THIS TYPE OF INCIDENT FROM

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R i 0 C CUR I i\jS *

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( SF-1201 (RS-69)