ML20084L904

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Telecopy Ro:On 740520,during Functional Instrument Test, Instrument Drift Pressure Switch PS2-504B Actuated at 401 Psi in Excess of Tech Specs.Cause Not Stated
ML20084L904
Person / Time
Site: Dresden Constellation icon.png
Issue date: 05/20/1974
From: Stephenson B
COMMONWEALTH EDISON CO.
To: Oleary J
US ATOMIC ENERGY COMMISSION (AEC)
Shared Package
ML20084L907 List:
References
NUDOCS 8305240193
Download: ML20084L904 (1)


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THIS WILL CONFIRM CONVERS ATION *ITH MR F MAURA 0F YOUR OFFICE AT IC45 HOURS THIS DATE CONCERNING INSTRUMENT DRIFT PRESSURE SW I TCH PS2-50 4a WH ICH AliOw4 swau al i eSS Tway 459fe MTED STEAM FLOW OF THE GENERATOR LOAD REJECTION AND TURBINE STOP VALVE CLOSURE SCRAM. THE SWITCH HAS FOUND TO ACTUATE AT

<0lPSI (INCREASING)( LIMIT 395 PSI INCREASING ).,URING FUNCTIO, VAL INS TRUMENT TEST. THIS IS CONTRARY TO SECTION 31 Or THE TECHNICAL S?ECIFICATION AND IS CONSIDERED AS AN ABNORMAL OCCURRANCE. FURTHEH INFORHATION WILL FCLLOW IN A 10 DAY NOTIFICATION 8 u STEPHENSON SUPERINTENDENT DRESDEN NUCLEAR POWER STATION COMMONWEALTH EDISON CC RR I MORRIS IL 30 9P EDT t

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