ML20084S159
| ML20084S159 | |
| Person / Time | |
|---|---|
| Site: | Dresden  |
| Issue date: | 04/16/1973 |
| From: | Worden W COMMONWEALTH EDISON CO. |
| To: | Grier B NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| Shared Package | |
| ML20084S151 | List: |
| References | |
| NUDOCS 8306160191 | |
| Download: ML20084S159 (1) | |
Text
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VE3246(1916) (1-032340C106)PD 04/16/73 1914 ICS IPiVEIA MVN
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01237 TDVE MORRIS IL 112 04-16 535P CST PMS MR BOYCE GRIER, DIRECTOR DIVISION OF COMPLI ANCE 4
REGION THREE US ATOMIC ENERGY COMMISSION 799 ROOSEVELT R0 GLEN ELLYN IL 60137 g
SU3 JECT DP4-25 DRESDEN NUOLEAR POWER STATION UNIT THREE.
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THIS WILL CONFIRM A CONVERSATION WITH MR MAURA 0F YOUR OFFICE AT 1530 HOURS THIS DATE CONCERNING TWO SUSTAINED HIGh j
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REACTOR PRESSURE SWITCHES BEING OUT OF CALI3 RATION. THESE PRESSUHE SWITCHES,1NI ATE ISOL AT ION CONDENSGR AFTEH A FIFTEEN SECO ND r.
TIME DELAY. ON 4-13-73 PS3-263-533 WAS FOUND TO TRIP AT
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1075PSIG AND PS3-263-53D W AS FOUND TO TRIP AT 1073PSIG. TABLE j
3.2.2 0F THE TECHIN AL SPECIFIC ATION ST ATES THE TRIP LEVEL SETTING SHOULD BE LESS THAN OR EQUAL 10 1070PSIG.
OF-121 M s
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AFTER THE CALIBRATION SWITCH 53B TRIPPED AT 1052PSIG ~ AND TH CWITCH 53D AT 1056PSIG.
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