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)

Text

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UNITED STATES ATOMIC ENERGY COMMISSION DIVISION OF COMPLIANCE REGION Ill 799 ROOSEVELT ROAD GLEN ELLYN, ILLINOIS. 60137 REGULA TORY OPE RAT IONS, REG ION II I TEU::PHONE

• (31 Z) 8 58-2660 A.

RO Inspection Report No.

Transmittal Date Distribution:

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

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DR Central )i.~il~s Regu*latory'"\\?_tandards ( 3)

• Licensing ( 13)

Dis tribu tiOn:

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

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

B.

RO Inquiry Report No.

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Transmittal Date Distribution:

RO Chief, RT&OB or RO Chief,. RCB ( 2).

RO:HQ (5).

DR Central Files Regulatory Standards (3)

Licensing ( 13)

Distribution:

RO Chief, M&FFB RO:HQ DR Central Files Incident Noti£ication From:

Commonwealth Edison DPR-25 ;jz}.; ~'/1 (Licensee & Dock~t No. {or Licerise No.)

Transmittal Date April 25, 1973 Distribution:

.RO Chief, RT&OB or RO Cpief, ~CB RO:HQ (4)

Licensing (4)

DR Central Files l)istribution:...

• • RO Chief, M&FFB RO:HQ (4)

L:D/D for Fuel ~Materials DR Central Fil~s *

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

U S AT.oi*nt i::N£R3Y COl1ilHS.3ION 799 ROOSEVELT RODAJ WUX GL~~N ELLt~ ILL 60137 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 Hf 1300 ~OURS THIS JATE CONCERNIN3 A LOSS OF SECONJARY CON~AINMENT

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

JN PARIL 19, 1)73 AI A?PRO,\\HlATELY 1600 HOURS Ul\\IT 3 t"IAIN.:>TEAi1 ISOLATION VALVE.C~3IV>3-203-2B WAS OPENED FOR INSPECTIO~ OF VAL~E 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 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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APR 2 5 1973

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

• y 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 R i 0 C CUR I i\\jS *

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