ML20084T515
| ML20084T515 | |
| Person / Time | |
|---|---|
| Site: | Dresden  |
| Issue date: | 11/20/1972 |
| From: | Worden W COMMONWEALTH EDISON CO. |
| To: | Grier B NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| Shared Package | |
| ML20084T513 | List: |
| References | |
| NUDOCS 8306230239 | |
| Download: ML20084T515 (1) | |
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ZCZC 00221 TDVE :: ORRIS ILL 120 P:!S "R E0YCC CRIER DIR DIVN OF CCIIPLI ANCE REGIO!: E UUY MACHINE O
US ATO:IC ENERGY COMMISSION 779 ROOSEVELT RD CLEN ELLYN ILL 60'57 O
SUBJECT : OPR-25 DRESDEN NUCLEAR POUER STATION UNIT 3 THIS UILL CONFIRM A CCMVEREATION UITH MR H DANCE OF YOU1 0FFICE O
AT 1100 HOURS THIS DATE CONCERNING REACTORS LOU PREECURE SUITCHEF EEINC OUT CF CALIBERATION. ON 11/ '9/72 UHILE UNIT 3 UAS SHUT DCUN, O
A CALIDERATIO*1 UAS MADE ON MAIN STEA" lit:E LOU PRESSURE SUITCHES.
CAELE 5 2.10F THE TECHNICAL SPECIFICATIONS STATE THAT THE TRIP O
LEVEL SETTING ON THESE SUITCHES SHOULD BE Ef UAL TO OR GREATER THAN S50 PSIC. ALL FOUR PRESSURE cUITCHES HAD TRIP SETTINGS BELO" O
850 PSIC. PRES 9URE SUITCHES 3-261-30 A AND 50B HAD SETTING OF C4' AND C!lE PSIC. PRESSQF. LS'3IYdiiES 5-261-300 AND 300 er mi tu _.
O IN THE FUTURE THE "AS LEFT" CALI3ERATION SETTING ON THESE SUITCHES HAS DEEf! CHANGED FRO : F55 PLUS OR MINUS PSIC TO C66 PLUS OR MIN'JS 4PSIC.
U P UCRDEN SUPERINTENDENT C0'!MONUEALTH EDISON DRESDEN I:UCLEAR POUERSTATION RR 1 MORTIS ILLINOIS O
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