ML19347A918

LER 80-039/03L-0:on 800829,during Low Pressure Main Steam Line Functional Test & calibr,RE23B & 23D Pressure Switches Actuated at Valve Above Tech Spec Limits.Caused by Instrument Repeatability.Switches Reset to Desired Limit

ML19347A918
Person / Time
Site:	Oyster Creek
Issue date:	09/26/1980
From:	Crosby P JERSEY CENTRAL POWER & LIGHT CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML19347A913	List: ML19347A912 ML19347A918
References
LER-80-039-03L, LER-80-39-3L, NUDOCS 8009300528
Download: ML19347A918 (1)

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, m , Main Steam Line Functional Test, the low pressure main steam line 1

,,,j ; MSIV isol'ation sensor switches RE23B and 230 tripped at a valve This event I

, g , five (5) psig less than specified in Tech. Spec. 2.3.7.

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CAUSE oE3CAh*TICN ANO OCRPECTIVE A0TICNS h I Instrument repeatability was the apparent cause of UTE'l l I

,,,,ji this event. The immediate corrective action was to reset RE23B'and RE23D to trip within the specified limits. An I gg

,,,,g engineering study is in progress regarding the feasibility of 1

,,,j; replacing the existing sensors with a solid state system. 80 50 m DISCOVERY DE30PIPflCN

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