05000336/LER-1981-016-03, /03L-0:on 810401,reactor Protection Sys Channel D Trips for High Power,Thermal margin-low Pressure & Local Power Density Declared Inoperable.Caused by Linear Amplifier Voltage Drift.Investigation Will Be Made at Next Shutdow

/03L-0:on 810401,reactor Protection Sys Channel D Trips for High Power,Thermal margin-low Pressure & Local Power Density Declared Inoperable.Caused by Linear Amplifier Voltage Drift.Investigation Will Be Made at Next Shutdown

ML20003H264
Person / Time
Site:	Millstone
Issue date:	04/30/1981
From:	NORTHEAST UTILITIES
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML20003H262	List: 05000336/LER-1981-016, Forwards LER 81-016/03L-0 05000336/LER-1981-016-03, /03L-0:on 810401,reactor Protection Sys Channel D Trips for High Power,Thermal margin-low Pressure & Local Power Density Declared Inoperable.Caused by Linear Amplifier Voltage Drift.Investigation Will Be Made at Next Shutdow
References
LER-81-016-03L, LER-81-16-3L, NUDOCS 8105050451
Download: ML20003H264 (1)

LER-1981-016, /03L-0:on 810401,reactor Protection Sys Channel D Trips for High Power,Thermal margin-low Pressure & Local Power Density Declared Inoperable.Caused by Linear Amplifier Voltage Drift.Investigation Will Be Made at Next Shutdown

Event date:
Report date:
3361981016R03 - NRC Website

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In accordance with Technical Specifications section 3.3.1.1, action 2.b, j inoperable.

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the three trips were bypassed and operation continued.

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Further ' reports of similar drift were noted on g.

linear amplifiers voltage drif ting'.

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No similar events.

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At the next reactor shutdown a containment _entrv connections inside containment.

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