ML20085N539

Telecopy Ro:On 710810,unplanned Liquid Release Occurred Due to Error in Valve Lineup Causing Floor Drain Sample Tank B Release Prior to Establishing Proper Discharge Rate of Tank B.Cause Unknown.Investigation Underway

ML20085N539
Person / Time
Site:	Dresden
Issue date:	12/10/1971
From:	Hoyt H COMMONWEALTH EDISON CO.
To:	Grier B US ATOMIC ENERGY COMMISSION (AEC)
References
NUDOCS 8311110101
Download: ML20085N539 (2)

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l U na BOYCE GRIE Rn DI RECTOR / EC COI.1PLI AijCE REGI ON TliREE=

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799 ROOSEVELT RD CLEi! ELLYN ILL 60137 = -- - -

1 DPR19 Ai!D 2 5 DRE SDEf] ijUCLE AR P 0V!E R STA T l_0_ij U !! TS 9 ._

AijD 3o Tlil S '.'ll LL C0ijF I R'.1 CO JVE R S ATI O N 143 0 Tli i S DATE r!! TN E A JORD00 REGARDli!G AN UNPL ANNED LIQUI D RELE ASE i OCCU R I NG FRO'.1 Oo49 TO 1105 Til l s D A TE REPORTAJLE U NDb l SECTION 66As 1111 S UNPL ANNE D RELE ASE OCCU RE D AS A _ ,

RE SULT OF AN ERROR lij VALVE Li t!E UP CAUSI NG B FLCOR '

i DR Ali! SA'!PLE TANK RELE ASE AT A RATE E STABLI SHE D FOR T11E t

FLOOR DRAl:1 S A'.1 P LE TihK PRI OR T0 E STADLI Siil:1G T!iE _ _

- PROPER DI SCli ABCE RATE OF Ti12 B TANKo TliE RE SUL TI NG '

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ACTIVITY 1:1 TliE DI SCN ARGE Y!ATER V!AS 30 PIC0 CURIE S

_ PER L!TER OR 30 PERCENT OF TliE ALLOV!ABLEo A RE VI E rl

_ f, l ._ OF FACTORS rilii Cli CONTRI BUTE D TO TiiE E RROR 'l S BE I NG  !

i J RE V I E "!E D AND ACTl ON IS BEING TAKEil TO PRE VENT RECURRE;1CE= l 11 K liOYT $PTo DRE SDEil i!UCLE AR POV!ER STATI ON=:

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TO treame and unit) isis t s A.$ hLMAhks J. Keppler L'X INCIDENT REPORT - DRESDEN 2 & 3 (50-237 andls0-249 )

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t i #<G tA (Name and un.t) htuAnns D. M. Hunnicutt In accordance with PI 1000, attached is the original TWX report l CO:III dated 89 9 1 reporting an unplanned liquid rdlease.

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