ML17238A745
| ML17238A745 | |
| Person / Time | |
|---|---|
| Site: | Dresden  |
| Issue date: | 03/13/1972 |
| From: | Worden W Commonwealth Edison Co |
| To: | Morris P US Atomic Energy Commission (AEC) |
| References | |
| Download: ML17238A745 (2) | |
Text
MSG.NR 330 TLXA290 PC209 50-249 Q NNC447 CCH 073NN130447>PD WU JOL ZCZC 2*NL PD TDJL MORRIS ILL 13 0742P EST03/13/72 DR PETER A MORRIS DIRECTOR DIVN ON REACTOR LICENSING US ATOMIC ENERGY COMM WASHDC 20545 BT DPR-25 DRESDEN NUCLEAR POWER STA~ION UNIT 3 THIS WILL CONFIRM CONVERSATION AT 16:00 HRS. THIS DATE WITH H.
DANCE, VOF REGION 3 COMP(IANCE REGARDING A WIRING ERROR UNCOVERED IN THE LPtI LOGIC TO SPRAY.tHr CONTAINMENT UNDER ACCODENT CONDITIONS.
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"THE WIRING ERROR WAS-DISCOVERED.~T 15:00 HRS. ON 3/7/7~ WHILE.CONDUCT!
NG A 'MONTHLY SURVEILLANCE TEST. T~E ERROR WOULD NOT HAVE BEEN NOTED EXCEPT THAT *-AT THE TIME OF THE SURVEILLANCE A LPCI SYSTEM LOW-FLOW.SWITCH WJS ALSO* OUT OF CALIBRATION.- THIS SET-UP A CONDITION I.,,,,...
'DIFFERENT THAT THAT NORMALLY FOUND DURING TH SURVEILLANCE TEST.
THE WIRING ERROR WAS CORRECTED ON 3/8/72.
THIS INCIDENT WAS* NOT REPORTED SOONER BECAUSE WHEN THE STATION
- 1NITIALL~ REVIEWED THE PROOLEM IT ~AS FELT TO BE A 30-DAY NOTIFICATION BECAUSE THE LPdI SUB-SYSTEM WAS ALWAYS OPERA~LE. TH EFFECT OF THIS WIRING ERROR WAS ONLY TO PROHIBIT PERMISSIVE TO BNEX BMN~~Bl$S $WITCH SPRAY THE DRY WELL WITH GREATER THAN 2/3RDSr 1 CORE HEIGHTH. THIS FUNCTION IN SPITE OF TH WIRING ERROR COULD HAVE BEEN PERF-OMED W P ~ORDEN PLATYCPP HRS OF REGION 3 RPT ON NOT VOF. LPCI 15:00 ~/7/72 LPCI 3/8/72. 30 LPCI 2/3RDS
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