ML17252A511

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Letter Confirming a 07/29/1974 Conversation Concerning Failure of the Seat Material of Air Operated Isolation Valve AO-3-1601-21 - Dresden Unit 3
ML17252A511
Person / Time
Site: Dresden 
Issue date: 07/29/1974
From: Stephenson B B
Commonwealth Edison Co
To: O'Leary J F
US Atomic Energy Commission (AEC)
References
Download: ML17252A511 (1)


Text

. i ! -*--* ... -.....,_; __ * .. t . ' .-*. '-*1cw _: . . . . * --iuv11*w ** RECEIVED*. * .. 1 ,/ orJO 1974 JUL 29" PM .. 10, 15 .* .J:S. ATOMIC ENERGY .. b,,. -.*TWX UN1r . V'WN=cH7108280475 GTWN* 50*.-2' 4 9. SPL072 IC S IP. MV EI C MV N .. 03249 TOVE MORRIS IL 108 CDl __ o_F __ __________ '"""""' __ ==--..".....____* ]_ US ATOMIC ENERGY COMf!l.ISSION -.... _ WASHDC 20545 -*:.; SUBJECT DPR-25 DR.ESOEN NUC_LE:AR .. POWER STATI.ON UNIT 3 .... TH IS WI LL.CONFIRM A c*oNv*ER.SA TI ON WI TH-:F *. OF .YOUR OFFICE AT 1445 HOURS THIS. DA.TE CONSERNING *A FAILURE OF THE SEAT . --. . . ' .. MATERIAL OF AIR-OPPER.ATED <ISOLATION_ VALVE A0-3-1601*21. 1)HS ' VALVE. WHICH IS IN SERl°ES WITH. THE PffEViOUSLY REPORTED. I. *-A0-3-160122 VA_LV-E WAS DISCOVERED SEAT BY. . -. LOCAL LEAK RATE -TESTING. AT 2300 Ji'buRS. JULY 26_, -1974. A _REACTOR . . SH UT DOWN .WAS COMMENCED AND .THE R FACTOR* :WAS. IN COLD SHUJDOWN AT 0900 JU!:.Y 27, ADDITIONAL DETAJLS_ THE FORM OF *A TEN.* DAY LETTER WILL BE FORTHCOMING B 8. ST.EPHENSON._SUPERIN1-:ENDENT DRESDEN NUCLEAR POWER STA TI ON COMMON WEA TH .EDIS ON. -COMPANY RR #!*MORRIS ILL 66450 2203.EDT USA EC-HQS-G TWN 7966