Pages that link to "NRC Form 304"
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The following pages link to NRC Form 304:
Displayed 21 items.
- 05000370/LER-1986-004-03, :on 860321,during Maint,Esf Actuation Occurred Immediately Following Attempts to Remove Broken Drill Bit from Control Board.Cause Undetermined.Incident Will Be Reviewed as Supplementary Personnel Training (← links)
- 05000261/LER-1985-022-01, :on 850928,Exxon Nuclear Corp Informed Util of Error in Large Break LOCA Analysis Which Resulted in Peak Clad Temp Being Underpredicted.Reactor Power & High Flux Trip Setpoint Increased within New Limits (← links)
- 05000327/LER-1985-033-01, :on 850827,during Weekly Train B Chlorine Detector Function Testing,Esf Actuation Occurred for Main Control Room Isolation.Caused by Personnel Error.Personnel Counseled (← links)
- 05000423/LER-1985-003-01, :on 851214,while in Cold Shutdown,Emergency Bus 480-volt Ac Required to Be Operable Per Tech Specs Tagged Out of Svc to Perform Maint.Caused by Personnel Error.Bus Restored to Svc (← links)
- 05000382/LER-1985-053, :on 851212,discovered That Portion of Core Protection Calculator Tech Spec Functional Test Not Performed for Several Intervals.Caused by Procedural Change Eliminating Requirement.Procedure Changed (← links)
- 05000298/LER-1985-012, :on 851020,HPCI Sys Inoperable During Daily Exercising of Turbine Auxiliary Lube Oil Pump.Caused by Burned Commutator Segments & Shorted Armature Coils on Oil Pump Motor.Motor Rebuilt (← links)
- 05000346/LER-1985-013, :on 850609,main Feedwater Pump 1 Tripped on Overspeed Due to Control Problem.Reactor Also Tripped on High RCS Pressure Because of Inadequate Feedwater.Corrective Actions Not Yet Determined (← links)
- 05000281/LER-1984-015, :on 841029,during Breaker Testing,Load Shedding Initiated & Main Feedpump Tripped Leading to Low Steam Generator Level & Reactor Trip.Caused by Inadequate Procedures.Procedure Revised (← links)
- 05000267/LER-1985-022, :on 851015,circulator B Tripped on Low buffer- mid-buffer Differential Pressure.Caused by Small Amount of Buffer Helium Allowed to Vent Through buffer-mid-buffer Knockout Pot.Drain Procedure Revised (← links)
- 05000413/LER-1985-049-01, :on 850807,inadvertent Isolation of Both Discharge Headers of Fire Protection (Ry) Pumps Occurred. Caused by Personnel Error.Correct Ry Header Isolated. Procedure 2-18 Revised (← links)
- 05000382/LER-1985-029, :on 850630,reactor Trip Occurred Due to High Water Level in Steam Generator 2.Caused by Valve Positioners for Main Feedwater Regulating Valves Out of Adjustment. Positioners Adjusted (← links)
- 05000424/LER-1996-012-01, :on 961127,main Generator Stator Cooling Short Circuit Leads to Turbine/Reactor Trip.Caused by Metal Tag Coming in Contact W/Terminal Strip.Fuse Replaced & Metal Tags Removed (← links)
- 05000296/LER-1984-014-02, :on 841206,split Ring,Retaining Ring & Snap Ring Missing from Limitorque Valve Operator.Retaining Rings for Worn Shaft Gear Installed.Operator & Drive Motor Reassembled (← links)
- 05000366/LER-1984-010, :on 840924,reactor Water Cleanup (RWCU) Inboard & Outboard Isolation valves,2G31-F001 & 2G31-F004, Respectively,Isolated Due to High Differential Flow Signal. Caused by RWCU Demineralizer Not Full (← links)
- 05000373/LER-1996-002-08, :on 960323,TS Required Fire Watch Missed.Caused by Personnel Error & Breakdown in Communications Between Sys Engineers & Fire Watch Group.Fire Watch Staff Counseled & Retrained (← links)
- 05000387/LER-1984-010, :on 840225,reactor Manually Scrammed When One of Six Automatic Depressurization Sys Safety Relief Valves Stuck Open & Would Not Close in 2 Minutes.Caused by Faulty Valve Solenoid.Solenoid Replaced (← links)
- 05000348/LER-1995-005-01, :on 950611,spurious MSIV Closure Resulted in Reactor Trip.Caused by Water Intrusion from Room Cooler Leakage.Room Cooler Leak Repaired (← links)
- 05000321/LER-1981-112-03, Torus to Rx Bldg Differential Pressure Switches 1T48-N210,N211,2T48-N210 & N211 Proof Press Not within Tech Spec Limit.Caused by Switch Misapplication.Also Reported Per Part 21 (← links)
- 05000029/LER-1990-006, :on 900811,emergency Diesel Generators Failed Tech Spec Surveillance Test.Investigation Team Formed to Review Testing History & Determine Cause.Design Change to Replace Emergency Diesel Generators Initiated (← links)
- 05000282/LER-1980-018-01, /01T-0:on 800701,unit Was Shut Down Due to Leaking Tube in Hot Leg of Vertical Steam Generator 12,Westinghouse Series 51.Cause Not Stated.Defective Tube Will Be Plugged (← links)
- 05000251/LER-1988-012-01, :on 880905,control Rod K-12 Dropped from 228 Steps to 0 Step,Causing Turbine Runback to 60% Power.Cause of Drop Under Investigation.Insp of Control Rod K-12 Will Be Performed During Current Refueling Outage (← links)