ML20085L563

Telecopy Ro:On 711230,one Mechanical Vacuum Pump Suction Valve Did Not Fully Close Following Reversing of Main Condenser Circulation Water Flow.Cause Not Stated.Valve Closed Manually

ML20085L563
Person / Time
Site:	Dresden
Issue date:	12/31/1971
From:	Worden W COMMONWEALTH EDISON CO.
To:	Grier B US ATOMIC ENERGY COMMISSION (AEC)
Shared Package
ML20085L521	List: ML20085L520 ML20085L563
References
NUDOCS 8311020005
Download: ML20085L563 (1)

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DE JLA099 BJ PD MORRIS 31 1107A CST = PM; DEC 3r P:,: 1 3g fjR BOYCE Y! GRIER= DIRECTOR US AT0ffl C ENERG( COMMI SSION REG 10N3=COMPLI ANCE 7 99 ROOSEVELT RD X GLENELLY.N 'lLL ,

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=TH l'S l S TO CONFI RM TELEPliONE CONVERS ATI ON Vil Tli MR liUGil DANCE REGION TliREE COAPLIANCE CONCERNING SECTION 3 8eB DPR2 5 TECliNIC AL SPECI FIC ATI'ON. AT APPROXlM ATLY 2310 liOURS ON DECEMBER 3019710NE OF TliE MECli ANICAL VACUUM PUMP SUCTI ON VALVESDI D NOT FULLY, CLOSE FOLLOV!! NG REVERSI NG TliE M A'I N CONDENSER CIRCUL ATION VI ATE R FL OYl. TiiE UNIT VlAS AT

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150MVIE !!N PREP AR AT:1.ON OF CGAM'ING OFF SYpTEM FOR A PL ANNED OUTAGE. FAILURE OF Til:IS VALVE TO FULLY CLOSE VIOULD 11 AVE PREVENTED TiiE MECli ANICL VACUUM PUMP FROM BEING >

ISOL ATED AS REQU'lRED BY SECTIOr[3 8.B !!F 'lT RECEIVED fl SOL ATI ON SI GN ALo Ti1E M ANU AL SUCTI ON VALVE VIAS CLOSED AND TiiE RE ACTOR PL ACED 'I N A COLD SliUTD0V!N CONDI T10Ne ==

VI P VIORDEN= SUPT DRESEDEN NUCLE AR POVIER STATIONe=

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l MEMO ROUTE SLIP __. _ _

Form AEC-95 (Rev. May 14,1947) AECh eo Note and return. For sitnati.. .

• For informatloei. I TO (Name a9d unit) isunALS REMARKS J. G. Keppler

SUBJECT:

Commonwealth Edison Company CO:HQ mn Dresden Unit 3 Docket No. 50-249 TO (Name and unM) NuBALS REas aAKS cc: R. Gilbert CO:HQ ,,

TO (Name and unit) WeDALS REMARKS un FROM (Name and unit) ADsAAKS Helen Pappas Pl**** ""k" th* f"Il "4"E c""*c*ia""

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CO:III 1 LU covering subject facility: I. LN t yr \ yp% ". J '. ' y' CO Innuirv Rnt. No.71-007 'ded 7-13-71 s ould be 71-008 \ e/ il

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t 7-29-71 CO Tnnnfrv Rnt. No.71-008 dtd 7-14-71 should be 71-009 ~

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