05000368/LER-1980-053-03, /03L-0:on 800721,CEAC 1 Failed During Mode 1 Operation.Cause Not Determined.Ceac Sys Software Reloaded, Periodic Tests Performed & Failure Indications Returned to Normal.Ceac Returned to Operable Status on All Channels

/03L-0:on 800721,CEAC 1 Failed During Mode 1 Operation.Cause Not Determined.Ceac Sys Software Reloaded, Periodic Tests Performed & Failure Indications Returned to Normal.Ceac Returned to Operable Status on All Channels

ML19344B088
Person / Time
Site:	Arkansas Nuclear
Issue date:	08/19/1980
From:	Pendergraft R ARKANSAS POWER & LIGHT CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
Shared Package
ML19344B085	List: 05000368/LER-1980-053-03, /03L-0:on 800721,CEAC 1 Failed During Mode 1 Operation.Cause Not Determined.Ceac Sys Software Reloaded, Periodic Tests Performed & Failure Indications Returned to Normal.Ceac Returned to Operable Status on All Channels 05000368/LER-1980-054-03, /03L-0:on 800721,control Room Emergency Chiller 2VE-1B Found Inoperable During Mode 1 Operation.Caused by Unit Tripping on High Pressure Due to Improperly Operating Control Valve 2CV-1506-2.Control Valve Repaired 05000368/LER-1980-055-03, /03L-0:on 800721,PPS Channel D Received Spurious Dnbr/Lpd Trips During Mode 1 Operation.Caused by Fluctuating CPC Dnbr/Lpd Temp Input Calculations.Temp Transmitter 2TT- 4711-4 Electrical Leads Checked & Tightened ML19344B084
References
LER-80-053-03L, LER-80-53-3L, NUDOCS 8008250552
Download: ML19344B088 (1)

LER-1980-053, /03L-0:on 800721,CEAC 1 Failed During Mode 1 Operation.Cause Not Determined.Ceac Sys Software Reloaded, Periodic Tests Performed & Failure Indications Returned to Normal.Ceac Returned to Operable Status on All Channels

Event date:
Report date:
3681980053R03 - NRC Website

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OOCsLET NUMSEq 68 EVENT DATE 34 F5 HEPORTDATE 80 EVENT DESCRIPT80N AND PROSABLE CONSEQUENCES 1o 12 i During Mode 1 operation, CEAC r failed.

CEAC #1 was placed in the inop-l i erable mode on all four CPC channels. CEAC #2 remained operable.

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io p i i positions were monitored at four hour intervals per Tech Spec Table 3.3-11 lo is! I Action Sa. This occurrence is similar to LER's 50-368/79-073 and 79-004.I l Reportable per Tech Spec 6.9.1.9.b.

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CEAC #1 was returned to operable status on all CPC channels.

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