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 Issue dateTitleTopic
ML17264A11831 July 1995Response to Part (1) of GL 92-01,Rev 1,Suppl 1.
ML17353A43431 October 1995Rev 1 to BAW-2245, Initial Rt of Linde 80 Welds Based on Fracture Toughness in Transition Range.
ML18113A56317 October 1978LER 78-033/03L-0:on 780926,circulating Water Outlet Valve MOV-CW-200D Failed to Close When Operated Electronically. Actuator Cam for Shut Torque Switch Became Wedged.Switch Modified by Installing Holddown Screw Locking Hardware
ML18113A56717 October 1978LER 78-029/03L-0:on 780927,Channel II Pressurizer Pressure Protection Permissive P-456 Failed High.Caused by Failure of Oscillator Amplifier Module in Transmitter.Amplifier Replaced & Tested & Channel II Returned to Svc
ML18113A57113 October 1978Monthly Operating Repts for Sept 1978
ML18113A57512 October 1978LER 78-032/03L-0:on 780921,heat Tracing Circuit Manual Boration/Boric acid-to-blender Failed.Caused by Boric Acid Penetration of Heat Tracing Tape Circuits.Heat Tracing Tape ReplacedBoric Acid
ML18113A58425 October 1978Steam Generator Repair Prog for Subj Facil.Rev Contains Supplemental Info Requested by NRC Staff
ML18113A59431 October 1978LER 78-034/03L-0:on 781006,w/unit at Cold Shutdown,Snubbers 2-RH-HSS-20 & 2-WFPD-HSS-9 Inoperable.Caused by Low Fluid Level.Defective Snubbers Dry Because of Leaking Rod Seals & Mechanical Damage to Seals.Snubbers Replaced
ML18113A59531 October 1978LER 78-035/03L-0:on 781007,during Cold Shutdown,Valve Pit Flooded While Draining Circulating Water Box D.Caused by Damage of Valve from Flooding
ML18113A6029 November 1978LER#78-030/03L-0 on 781009:w/unit at Rated Pwr,Charging Pump Component Cooling Water Pump Btripped.Pump Tripped on Overcurrent.Caused by Corrosion Damage to Motor Bearings. Pump & Motor Rebuilt & Reinstalled
ML18113A6036 November 1978LER#78-031/03L-0 on 781011:Channel I Pressurizer Level (Protec),L-I-459,drifted High.Event Caused by Drift of Electronic Zero Adjustment in Conjunction W/Leakage Thru Transmitter'S Bypass/Equalizing Valve.Valve Tightened
ML18113A6046 November 1978LER#78-032/03L-0 on 781011:heat Tracing Circuit Faults Had Occurred as a Result of Boric Acid Incursion.Faults Repaired & Circuit Current VerifiedBoric Acid
ML18113A6056 November 1978LER#78-033/03L-0 on 781015:heat Tracing Circuit Failed. Caused by Old Boric Acid Buildup & Penetration of Heat LeakageBoric Acid
ML18113A6093 November 1978LER#78-036/03L-0 on 781015:compensatory Surveillance on RCP Cstator & Hearing Temp Had Not Been Performed.Caused by Failure of Operating Personnel to Restore Process Computer Trend Block Following Computer ReinitializationMissed surveillance
ML18113A62214 November 1978LER#78-034/01T-0 on 781101:during Routine Inspec on 781027 It Was Noted That 17 Spare Process Piping Containment Penetrations on Unit 1 & 23 on Unit 2 Were Not Capped,But Inside Ends Sealed in Auxiliary Bldg,Due to Constr Error
ML18113A63514 November 1978LER#78-037/03L-0 on 781022:with Unit at Rated Pwr,Panel Indicator for Radiat Monitor RM-213 Monitoring a Steam Generator Blowdown Read 0.Caused by Loose Connector Joining Detector Cable to Electronic Chassis
ML18113A64020 November 1978LER#78-035/01T-0 on 781109:study of Calibr Techniques Showed That SI Accumulators Indicated Level Would Be Lower than Actual Level.Discovered After Rigorous Review of Factors Affecting Instru
ML18113A64617 November 1978LER#78-038/03L-0 on 781030:boric Acid Flow from Boric Acid Tanks to Blender Was Interrupted Due to Crystallized Boron Blockage at Elbow in Line 1-CH-356-152.Obstruction Was Removed & Pipe Flow Returned to NormalBoric Acid
ML18113A65329 November 1978LER#78-040/03L-0 on 781031:periodic Test to Inspec Edg'S During a Refueling Outage Had Not Been Completed for Edg'S 1 & 3.Caused by Admin Error.Admin Guidelines Have Been Rev
ML18113A65729 November 1978LER#78-036/03L-0 on 781107:failure of Heat Tracing Circuit 24D,Unit#1,due to Boric Acid Damage.Heat Tracing Tape ReplacedBoric Acid
ML18113A65829 November 1978LER#78-037/03L-0 on 781107:procedure Deviation Found Re Filling & Venting Reactor Coolant Sys on 770105.Procedure Deviation Was Misrouted to Records Vault W/O Review by Snsoc.Deviation Has Now Been Submitted to Snsoc for Review
ML18113A66029 November 1978LER#78-038/03L-0 on 781108:quarterly Calibr of Nuc Pwr Range Instr Not Performed Due to Sched Error.Reactor Pwr Reduced as Required & Calibr Completed IAW Existing Procedures
ML18113A68011 December 1978LER#78-039/03L-0 on 781115:during Normal Oper,Channel I of Pressurizer Level Instrumentation LI-1-459,drifted Low.Cause Unknown at This Time.Transmitter Recalibr
ML18113A68111 December 1978LER#78-041/03L-0 on 781121:snubber 1-WAPD-HSS-141B Observed W/Zero Fluid Level in Reservoir.Caused by Leakage Thru Faulty Reservoir Seals
ML18113A68211 December 1978LER#78-042/03L-0 on 781117:during Normal Pwr Oper,Manual Valves 1-BD-8,18 & 28 Closed in Attempt to Stop Leak in Svc Water Line,Resulting in Termination of Plow Thru Blowdown Radiat Monitors.Caused by Operator Error
ML18113A68811 December 1978LER#78-039/03L-0 on 781115:during Normal Oper,It Was Noted That B Loop Hot Leg Temp Sensing Element TI-2-422A Was Drifting Low.Caused by Packing Leak Which Reduced Resistance of the Sensing ElementPacking leak
ML18113A68911 December 1978LER#78-040/03L-0 on 781116:routine Testing Revealed Failure of Heat Tracing Circuit 4C Unit#2 Boron Injection Tank Top Recirculation Return.Caused by Boric Acid Damage to the Heat Tracing CircuitBoric Acid
Packing leak
ML18113A70429 November 1978Environ Testing of Instr Cable Was Conducted to Conform W/Requirements Established by Subj Util.Cable Subjected to Thermal Aging & Radiat Exposure Prior to Test Simulating LOCA & MSLB Accident Conditions.Cables Function as Intended
ML18113A70913 December 1978LER #78-034/01X-1 on 781101:noted That 17 Spare Process Piping Penetrations on Unit #1 & 23 on Unit #2 Were Not Capped in Auxiliary Bldg.Caused by Failure to Properly Complete Capping at End of Constr
ML18113A7121 December 1978Monthly Oper Rept for Nov 1978Boric Acid
ML18113A72218 December 1978LER#78-041/03l on 781201:failure of Heat Tracing Circuit 5A (Panel 10)Unit#2 Blender to Charging Pump Suction Due to Water Damage of Heat Tracing Circuit.Heat Tracing Tape ReplacedBoric Acid
ML18113A72618 December 1978LER#78-022/03X-1 on 780726:Hydro Test Pump Failed to Build Up Pressure During Attempt to Fill Safety Injection Accumulators Due to Lifting of Its Relief Valve.Valve Replaced & Checked.Accumulator Refilled
ML18113A73018 December 1978LER#78-044/03L-0 on 781204:during Normal Full Pwr Oper,Loss of Flow Was Detected in Charging Pump Intermediate Seal Cooler 1-SW-E-1B.Caused by Failure of Cooler Intake Gate Valve Becoming Corroded
ML18113A74222 December 1978LER 78-043/03L-0 on 781129:low Temp Alarm & Rapid Increase in Level Were Noted in Boric Acid Storage Tank a During Valve Line Up to Transfer Boric Acid from Storage Tank B to A.Caused by Erroneous Opening of 1-CH-74Boric Acid
Shutdown Margin
ML18113A7502 January 1979LER 78-050/01T-0 on 781220:Westinghouse Notified VEPCO of Input Error in Current LOCA-ECCS Analysis,Increasing Peak Clad Temp 20 F.Cause Was Alternate Modeling Methodology Used in Analyzing Containment Pressure Response Effects
ML18113A7545 January 1979LER 78-047/03L-0 on 781211:primary to Secondary Leakage in Steam Generator C Exceeded 0.3 Gpm Due to Leakage Through 5 Steam Generator Tubes
ML18113A7555 January 1979LER 78-048/03L-0 on 781209:2 Control Rod Assemblies Dropped During Rod Urgent Failure Alarm Investigation.Caused by a Faulty Phase Control Circuit Card in the Rod Control Power Cabinet
ML18113A7582 January 1979LER 78-045/03L-0 on 781205:radiation recorder,RR-175,stopped Printing.Caused by Frozen Bushing in Print Mechanism
ML18113A7592 January 1979LER 78-046/03L-0 on 781211:during Routine Surveillance, Discovered Failure of Heat Tracing Circuit 25A (Panel 2) Unit 1 Boron Injection Tank Recirculation to Boric Acid Tank.Caused by Boric Acid Attack on Heat Tracing CircuitBoric Acid
ML18113A7602 January 1979LER 78-049/03L-0 on 781219:conduct of PT-39B Revealed 2 Snubbers W/Fluid Levels Less than Target Level.Caused by Leaking Tube Fittings
ML18113A77131 October 1978Vepco Flame Model. Util Developed 3 Dimensional(X,Y,Z) Modified Diffusion Therory Calculational Model Designated as Vepco Flame Model.Accuracy of Model Is Demonstrated Through Comparisons Taken at Units 1 & 2
ML18113A78915 January 1979LER 79-001/01X-0 on 790102:potential non-conservatism Noted in Calculations Performed in Monitoring Heat Flux Hot Channel Factor.Caused by Failure of Sys & Procedures Used for Relevant Surveillance.Input Values Adjusted
ML18113A7934 January 1979Monthly Operating Rept for Dec 1978
ML18113A81329 January 1979LER 78-041/03X-1 on 781121:during Performance of PT-39-1 at Full Power,Snubber 1-WAPD-HSS-141B Had 0 Fluid Level in Reservoir,Due to Crack in Reservoir Glass
ML18113A8182 February 1979LER 78-031/03X-1 on 781001:during Normal Operation,Channel I Pressurizer Level (Protection) L-I-459 Drifted High.Caused by Drift of Electronic Zero Adjustment,In Conjunction W/ Leakage Thru Transmitter Bypass/Equalizing Valve
ML18113A8192 February 1979LER 78-038/03X-1 on 781108:review of Operational Data Showed That Quarterly Calibr of Nuclear Power Range Instrumentation Had Not Been Performed Per Schedule,Due to Scheduling Error
ML18113A8345 February 1979LER 79-001/03L-0 on 790112:personnel Batch Inner Door & Emergency Escape Manway Not Leak Tested within 72-h After Opening Because Escape Manway Safety Lock Believed Broken, Posing Hazard
ML18113A83812 February 1979LER 79-002/03L-0 on 790115:electrical Penetration Between Turbine Bldg & Emergency Switchgear Room Not Properly Sealed.Caused by Penetration Being Broken During Previous Implementation of Design ChangeFire Barrier
ML18113A84222 January 1979Monthly Operating Rept for Jan 1979
ML18113A85015 February 1979LER 79-002/03L-0 on 790120: During Normal Operation Channel Check Revealed That Pressurizer Pressure Channel I Drifted Above Tech Spec Limit as Compared to Channels II & Iii. Caused by Failure of Channel I Pressure Transmitter
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