ML17238A713

Letter Regarding an Appearance on 12/08/1971 Which Resulted in a Primary Containment Pressure of 20 PSIG

ML17238A713
Person / Time
Site:	Dresden
Issue date:	12/10/1971
From:	Hoyt H Commonwealth Edison Co
To:	Grier B US Atomic Energy Commission (AEC)
References
Download: ML17238A713 (3)

Text

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K VEB1.92 AS ~DF=tD~E MOAR~S mGG 8 920~ t~r~

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E JORiJAN REGARD[(NG. AN AP~:EARANCE. A.T, 1~lJ.f3 HOUR ON DECEMBER 81'_911 1 v11{[cH aEsuQ.r.En [f}N *A PF(fr'~iARX; cor~~-~~!JN~~Erfr ~R~ssu~E oF 2o ?s:fGe rtiE UN:rr \\vAs C 1PERA.t!J'.NG At ]92 r~1WE STE.~DY stATE

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\\VtiEN A CONDENSAJE;BobSJER f>m.:1F>

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.Tf(~~s CAUSED qoss o~ tHE ~EEb0ATE~ PU~~s ON Co0 sutTfON ~RE*ssu~E ANb A I

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RESUi..Tf'..-N.t ('ow REACJOR V!AJ.ER L.EVEC SCRAf1:?0 A~~Rox:v~1AIEL..Y_ ~o

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~ECON?S AF.tER THE SCRAii,~ JfiE i~f.A0~N SJ.EAM [ijsoQ~T~~ON y~,y~s CLOSED ON tHE LOW SJE*,~r,~1 LTNE PRESSURE'

~VAT.ER LEVEL' ROSE I RAPJ~DQ'f rn~ vt1iE,RE~i:c9:,R 9E.ssEci

• nuRr,1:NG t11xS T::ci.iE uNnER CONTROL OF TliE SPE-EP-WATER CONTROU. :SYSTEM AND REACHED tHE -CEVEC b~'-- tHE s.iEAr~~. LTNEe At: AB-*eu-r *,1 14'i'8 nouRs PRfn~1ARY.

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• coNti~TN~1ENr rnEssuRE REACHED.to F>sJG :AND Ace REQUJRED 1

ECCS SYSTEMS SJARTED-0> CbNTATr1HriENt PRESSURE CONTJNUED to

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I Ji.EAT REMOVAL FROM THE Cbt~TAJNr~iENTo AJ 2000. HOURS

. CONTJ~/fNMENT. ~RESSURE \\;Jf-\\S 308 ~SJG AND DECf1EASlNG'> VENTfJlG i

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OF t.HE ENV'.:iJRONS HAS BEEN [l'.Nff:t;fJAtED AND At.T~fl'.S tt.rAE

rt* APPEARS *t1~At NO REGEA8E.. 11As~ 6ccuRRED~. ;.*' ?~bGRA,r*~~-* 11As

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DEVEQOP,~_D IO FURTJ1E R cboq.T.~E ~R;t;MAR1-, CONJAJ;,:t~rvlENJ: Ar~D Ji~~ REA~J.O~ s'{stE~~~ AND ~~}S ur~DER \\VAt A.I Jl1[1}S.t!)AE0.

ffNVE*stFfGAJTON r11NtO tl(f;S OCCURANCE ms UNDER \\VAY. AND YOUR.

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><M OFFtCE w*i*ut BE KEPT T*NFORMED OF THE RESULJTS=

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• I ft K HOYT SUPT DRESDEN r*~ucGEAR PO\\VER STATtON RR 1.. ~ifl ORf(fJS, llLl3. 'ro43 50==

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DPR~25 3 1945 1413 8 1971 20.792 MWE 50 1*41a 20 3~8 2000

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