ML20084U127

Telecopy Ro:On 720707,during Routine Surveillance Procedure, Reactor Protection Sys Relays Control Valve 2 Did Not Deenergize When Closed.Caused by Missing Mounting Screw. Screw Replaced

ML20084U127
Person / Time
Site:	Dresden
Issue date:	07/10/1972
From:	Worden W COMMONWEALTH EDISON CO.
To:	Grier B NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
Shared Package
ML20084U117	List: ML20084U115 ML20084U127
References
NUDOCS 8306270060
Download: ML20084U127 (1)

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C::TEOL VALVES '.?EEE I! DIVILU ALLY CYCLED CLOSED AS PAT.T OF T"E EDUTINE TUREIN SURVEILLANCE PROCEDUEE. THE T.Ei>CT02 FT.0TECTIO:: SYSTE::

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THE LO AD 1'AS EEDUCED TO 300 ::UE LY 0103 0:: 7-9-72.

I!!VESTIG ATION OT THE S'.* ITCH SHO'?ED THisT' O!!E OF TUO ::CUNTING SCT.E'?S HAD COPE OUT. TFIS PEEMITTED TEE PLUNCEE THAT C?ERATED TEE S:.'ITC" "D PUSH TME S'JITC9 ALOUND THE RE::AINIMC NOUNTIt'C SCT.E'.? INSTFAD CF OERATING TFE S"ITC".

TFE ::ISSIN,G S" ITCH "AS REPL ACED A :D THE OPER ATICN CF TFE S"ITC" '..'t.S ISTED SATISTACTO2Y AEOUT 1400 HOURS ON 7-5-7 2. TEE LO A" '.?AS EETU"'CD G 4 ED M"E AT 1440 HOUES.

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