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Issue date | Title | Topic | |
---|---|---|---|
ML20057C422 | 22 September 1993 | Ro:On 930910,noticed Fluctuations on Power Channels Due to Element 574 in Position J-7 Becoming Unlatched for Listed Reasons.Subj Element Replaced.Special Instructions Will Be Provided to Operators on Fuel Handling & Monitoring | |
ML20114D711 | 2 September 1992 | Ro:On 920824,several Annunicators Re Reactor in Manual, Servo Deviation Greater than 10% & Clutch Power Off Received.Caused by Shim 3 Slipping & Clutch Current on Low Alarm.Potentiometer Wiped Clean & Current Adjusted | |
ML20059M149 | 25 September 1990 | Special Rept,On 900918:shim 1 Relay Failed to Release Completely Upon Manual Scram.Caused by mercury-wetted- Contact Relay in Manual Scram Circuit of Shim.Relay Replaced & Relays in Sys Checked & Found to Operate Normally | |
ML20235M471 | 23 September 1987 | Ro:On 870911,while Performing Shim Arm Calibr Tests at Low Power,Shim 1 Would Not Drive Out But Would Drive In.Caused by Worn Thrust Bearings on Drive.Drive Reinstalled & Tested Satisfactorily | |
ML20087N612 | 29 March 1984 | Ro:On 840319,following Shim Arm Calibr Test,Shift Arm 1 Did Not Fall.Cause Unknown.New Ball Nut & Screw Assembly Installed | |
ML20067D939 | 6 December 1982 | Ro:On 821126,during Routine Refueling Operations,Fuel Element 345 Fell to Upper Grid in Transfer from Core Position D-1 to D-7.Caused by Operating Difficulty in E-2 Transfer Arm.Element Removed & Seated |