ML17252A904
| ML17252A904 | |
| Person / Time | |
|---|---|
| Site: | Dresden  |
| Issue date: | 05/24/1974 |
| From: | Stephenson B Commonwealth Edison Co |
| To: | O'Leary J US Atomic Energy Commission (AEC) |
| References | |
| Download: ML17252A904 (1) | |
Text
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]pegulatory Docket file 0
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USAEC HQS GTWN WU WSH.
TLXA 1 96 WAG201C1739JC1-039094Cl44>PD
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ICS IPMV EIC MVN 03259.TOVE MORRI$ IL '124 05-24 201P COT PMS MR J F O'LEARY DIRECTOR DIRECTORATE OF LICENSING WU~
$.ATOMIC ENERGY COMMISSION WASHINGTON PC 20545 1974 MAY 24 PM 9, 20':
SUBJECT OPR-25 DRESDEN NUCLEAR POWER STATION UNIT THREE lHIS WILL CONFIRM A CONVERSATION WITH F MAURA OF YOUR OFFICE AT 1345 HOURS THIS DA.TE CONCERNING T-HE DISCOVERY DURING ROUTINE WARTERLY CALIBRATION CHECKS OF. A SET POINT DRIFT OF
~1.T.s. 3-263-72A BEYOND THE PREMISSABLE VALVE GIVEN I
'TABLE 3.2.2. OF.THE TECHNICAL SPEC~FICATION.
THIS SWITCH WHICH JS THE SO CALLED 2/3 CORE COVERAGE INTERLOCKS FOR CONTAINME~T COO.LING WAS FOUND TO OPERATE: AT 259 INCHES OF WATER DECREASING
~ICH IS ABOVE THE PREMISSABLE SET POINT OF 257 INCHES OF WATER I
DECREASI.N~*
THE SWI T~ WAS RESET T.O OPERATE 254* 5 INCHES OF WAT~R*
ADDITIONAL DETAILS WILL BE FORTHCOMMING IN THE
. FQR~,QF A JEN.DAY LETTER IN ACCORDANCE WITH SECTIONS 6.6.}J.t.A CF THE TECHNICAL SPECIF.IGATIONS I
BB SJEPH~NSQN, SUPERINTENDENT PRESD~~ NUCLEAR POW~R.STATION COf1MQNWE~L.TH EDISON COMPA!\\IY
.. R. R I _MORRJ_S.IL ~04~~
822P EDT USA.EC HQS GTWN
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