ML20084L578

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Telecopy Ro:On 740815,during Routine Surveillance,Drift Discovered on Reset Point of HPCI Low Pressure Isolation Switches.Cause Not Stated
ML20084L578
Person / Time
Site: Dresden Constellation icon.png
Issue date: 08/16/1974
From: Stephenson B
COMMONWEALTH EDISON CO.
To: James Keppler
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
Shared Package
ML20084L568 List:
References
NUDOCS 8305230389
Download: ML20084L578 (1)


Text

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SUBJECT:

DFP[-19 DRESCEN N U CL E A 9 POWER ST AT ION UNIT 2.

THIS WILL CONFIRM A CONVERSATION WITu F. MA UR A 0F YO!'o 0FFICE AT 145 0 HOURS T HIS D ATE CONCERNING DRIFT OF wigu ppgggvi:E COLLANT INJECTION SYSTEMS (HPCI) LOW PRESSURE ISLOATION SWITCHES TO RESET POINT AROVE THE 9 0 PSI AT WHICH HPCI IS RErUIDED TO PE OPER APLE. CO ND IT IO NS W AS D ISCOVERED AT 1750 15 A US 74 DURING COUTINE SURVEILLANCE ACTUAL VALUES OF SWITCugg SF-12C1 (R5-49) iERE 94 AND 03 PSI IMMEDIATELY PESET TO LESS THAN D5 PSI ED STEPHE NSON SUPERTINE NDT DRESDEN NUCLEAR POWER ST AT IO N CCPMONWEALTH EDISON CO RR 1 MORR IS IL 6045 0 L

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SUBJECT DPR19 DRESDEN NUCLEAR POWER STATI0h UNIT 2.

THIS WILL CONFIRM A CONVERSATION WITH F MAURA 0F YOUh 0FFICE AT 1000 HOURS THIS DATE C0hCERNING, LEAK DISCOVERED Ih 2h REACT 0h FEED PUMP MINIMUM FLOW LINE 2-52058-61hCH-C ABOUT 0300 THIS DATE.

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