Pages that link to "RBG-44111, Special Rept:On 970625,LPMS Were Declared Inoperable.Cause Attributed to Excessive Background Signal Variations.Plan Was Developed to Investigate Noise Problem & to Restore Operability of Each Channel"
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The following pages link to RBG-44111, Special Rept:On 970625,LPMS Were Declared Inoperable.Cause Attributed to Excessive Background Signal Variations.Plan Was Developed to Investigate Noise Problem & to Restore Operability of Each Channel:
Displayed 50 items.
- ML20081B359 (← links)
- ML20092H566 (← links)
- ML20196H368 (← links)
- ML20217H081 (redirect page) (← links)
- RBG-30979, Ro:On 890504,trip of RHR Pump Occurred Due to Electrical Transient to Pump Protective Trip Circuitry.All Identified Surveillance Tests Requiring Fuses to Be Removed in Operational Condition 5 Revised (← links)
- RBG-31520, Special Rept:On 890823,diesel Generator Tripped Due to High Vibration Signal from Turbocharger Vibration Trip Switch. Possibly Caused by Leakage of Air Around O-rings in Shuttle Valve of Trip Switch.Switch Taken Out of Svc (← links)
- RBG-31519, Special Rept:On 890620 & 26,temp in Diesel Generator 1B Control Room Greater than Tech Spec Limit of 104 F for More than 8 H.Caused by Heat Generated Inside Standby Diesel Generator Bldg.Temps Continue to Exceed Tech Spec Limits (← links)
- RBG-30962, Special Rept:On 890426,valid Failure of Div III HPCS Diesel Generator Occurred.Caused by Div III Diesel Generator Not Satisfying Tech Specs Surveillance Requirement.Mod Request Initiated to Revise Time Delay Setting (← links)
- RBG-31263, Special Rept:On 890620,diesel Generator Control Room 1b Temp Above Tech Spec Limit of 104 F for More than 8 H.Caused by Heat Generated Inside Bldg by Standby Diesel Generator Keep Warm Sys,High Outside Temps & Insufficient Ventilation (← links)
- RBG-31433, Special Rept:On 890731,invalid Failure of Div III Diesel Generator Experienced During Surveillance Testing.Caused by Operator Error While Timing Generator Voltage,Per Reg Guide 1.108.Generator Declared Inoperable W/Controls Set (← links)
- RBG-31481, Ro:On 890801,errors Identified in Feedwater Flow Instrumentation Calibr Practices W/Plant Operating at Greater than Licensed Limit of 2,984 Mwt.Caused by Feedwater Flow Transmitter Calibr Incorrectly.Review Performed (← links)
- RBG-30773, Special Rept:On 881013,audio Signal from Loose Parts Monitoring Sys,Channel 6,found in Alert State During Surveillance Test.On 890217,loose Conduit Found on Top of Feedwater Line.Nozzle & Adapter Piece Removed (← links)
- RBG-31381, Supplemental Special Rept Re Diesel Generator Control Room Temp in Excess of Tech Spec 3.7.8 Limits for Greater than 8 H on 890717-0814.Rept Provides Temp Data Obtained Since Original Rept Submitted on 890620 (← links)
- RBG-31151, Ro:On 890326,in-line Reactor Coolant Conductivity Monitor Became Inoperable & Remained Inoperable for 65 Days Until 890531.Caused by Fueling Outage & Reactor Coolant Conductivity Exceeding Upper Range of Recording Instrument (← links)
- RBG-31175, Special Rept:On 890502,valid Failure Experienced on Div III Diesel Generator Due to Failure of Generator to Reach Min Speed & Voltage within Max Tech Spec Time Requirements.Cause Not Identified.Components Inspected &/Or Replaced (← links)
- RBG-31153, Special Rept:On 890530 & 31,temp in Div I & II Diesel Generator Above Tech Spec 3.7.8 Limit of 10 F.Caused by Heat Generated in Bldg & Insufficient Ventilation in Sys.Mod Request to Increase Exhaust Fans Prepared (← links)
- RBG-31344, Revised Special Rept:On 890503,invalid Failure of Div II Diesel Generator Occurred.Caused by Failure of Ventilation Exhaust Fan to auto-start While Performing Operability Test. Breaker Assembly Found to Be Binding (← links)
- RBG-31070, Special Rept:On 890512,surveillance Test on Div III Diesel Generator Terminated Due to Invalid Failure.Caused by Jacket Water Leak in Engine Outlet Pipe.Misaligned Coupling Correctly Aligned & Tightened (← links)
- RBG-31090, Special Rept:On 890517,Div 1 Diesel Generator Tripped Due to High Vibration Signal from Turbocharger Vibration Switch. Caused by Vibration Setpoint Set Too Low During 18-month Preventive Maint.Vibration Switch Bypassed (← links)
- RBG-24546, Special Rept:On 870724,seismic Monitor 1ERS-NBE1B Declared Inoperable When Surveillance Interval Expired Per Tech Spec 4.0.3 & Action Statement Entered.Monitor Will Still Register Seismic Events.No Such Events Have Occurred at Facility (← links)
- RBG-26476, Special Rept Re Measured Settlement Value Outside Limits of Tech Specs Table 3.7.10-1.Marker 34 Determined to Have Total Settlement of 0.91 Inches,Per Jul 1987 Survey,Exceeding Predicted Value of 0.4 Inches (← links)
- RBG-26519, Suppl to Revised Special Rept Re Failure of Div I Diesel Generator During Surveillance Test.Due to Schedule Restraints,Mod to Div II Diesel Generator Scheduled to Be Implemented During Refueling Outage to Begin 870915 (← links)
- RBG-26420, Ro:On 870605,potential Fire Hazard Identified as a Result of Placing 8,700 Gallon Diesel Fuel Tanker Immediately East of Generator Bldg for Refueling Operations.Hazard Not Considered in Plant Design.Interim Instructions Provided (← links)
- RBG-26459, Special Rept:On 870420,temps in North End of Main Steam Tunnel Exceeded Tech Spec Limit of 122 F for More than 8 H. Tech Spec Change Request Submitted to Increase Temp Limit to 135 F.Repts to Be Submitted Every 30 Days Until Resolution (← links)
- RBG-27115, Special Rept:On 871109,invalid Failure of Div I Diesel Generator Occurred During Surveillance Test.Caused by Improperly Calibr Temp Switch.Ref Added to Vendor Calibr Procedure in Loop Calibr Rept for Instrument (← links)
- RBG-27035, Suppl to 870923 Special Rept Re Loose Parts Monitoring Sys. on 871017,technicians Performed Work on Channel 2.Damaged Cable Replaced.On 871114,discovered That hard-line Cable Broken Near micro-dot Connector.New Cable Installed (← links)
- RBG-26893, Special Rept:Marker 34 Determined to Have Total Settlement of 1.03 Inches Found Outside of Tech Spec Table 3.7.10.1 Limits,Per Latest Quarterly Survey Performed in Oct 1987.No Structural Damage Occurred.Calculation G(c)-232 Revised (← links)
- RBG-26290, Special Rept:On 870420,temp in North End of Main Steam Tunnel Rose Above Tech Spec Limit of 122 F & Remained for Greater than 8 H.Tech Spec Change Request to Increase Area Temp Submitted to NRC (← links)
- RBG-30174, Special Rept:On 890204,temp in Main Steam Tunnel Rose Above Tech Spec 3/4.7.8 Limit of 135 F.Caused by Packing Leak from Penetration Leakage Control Sys Valve.Valve Packing Will Be Repaired at Next Available Outage of Sufficient Duration (← links)
- RBG-26713, Ro:On 870919,valve Manipulations Providing Open Path from Containment Bldg to Condensate Storage Tank Resulted in Reduced Water Level.Caused by Inadequate Procedural Control. Water Level Restored & Procedure SOP-0091 Revised (← links)
- RBG-26692, Special Rept:On 870815,loose Parts Monitoring Sys Channel 3 Found Inoperable.Suspected Cause Thought to Be Failed Line Driver &/Or Accelerometer.Sys Will Be Evaluated by Vendor During Refueling Outage (← links)
- RBG-26688, Supplemental Special Rept:On 870420,temp in North End of Main Steam Tunnel Rose Above Tech Spec Requirements.Tech Spec Change Request Submitted to Implement Mod Request 86-0342 to Increase Temp Limits in North Tunnel (← links)
- RBG-44111 (redirect page) (← links)
- RBG-26132, Ro:On 870420,during Surveillance Test Procedure STP-000-0001,temps in North End of Main Steam Tunnel Rose Above Tech Spec Limit of 122 F for More than 8 H.Tech Spec Mod Request 86-0342 Submitted to Increase Temp Limits (← links)
- RBG-26095, Special Rept:On 870515,valid Failure Experienced on Div III Diesel Generator While Performing Surveillance Testing. Caused by Failure of Fuse F55 in 120 Volt Circuit.Failed Relay & Fuse Replaced.Testing Successfully Completed (← links)
- RBG-24850, Special Rept:On 861025,invalid Failure Occurred on Div II Diesel Generator During Surveillance Testing.Caused by Loose Particle in Relay Inside Voltage Regulator motor-operated Potentiometer.Div I Relay Placed in Div II Generator (← links)
- RBG-25997, Special Rept:On 870423,invalid Failure Experienced on Div II Diesel Generator While Performing Surveillance Testing.No Action Required to Maintain Diesel Generator Operable.Failed Relay Replaced.Testing Sucessfully Completed (← links)
- RBG-24819, Special Rept:On 861018,Div II Diesel Generator Experienced Invalid Failure During Surveillance Testing.Caused by Improper Determination of Normal Background Vibration Level During Previous Engine Run.Vibration Switch Readjusted (← links)
- RBG-24820, Special Rept:Marker 34 Discovered to Have Settled Total of 1.03 Inches as of Oct 1986 Quarterly Survey,Exceeding Tech Spec Table 3.7.10-1 Limits.Marker Predicted Value Revised. Settlement Incorporated Into Proposed Tech Spec Change (← links)
- RBG-24817, Special Rept:On 861017,valid Failure Occurred on Div II Diesel Generator While Performing Surveillance Testing. Caused by Water in Governor Cooler Return Line.Governor Drained,Flushed & Refilled (← links)
- RBG-24271, Special Rept:On 860729,temps in North End of Main Steam Tunnel Rose Above Tech Spec Limit.Caused by Inadequate Air Circulation & Location of Thermocouples.Permanent Installation of Addl Air Supply Duct Work Planned (← links)
- RBG-25976, Special Rept:On 870420,during Surveillance Test Procedure STP-000-0001, Daily Operations Logs, Main Steam Tunnel Temps Exceeded Tech Spec 3/4.7.8 Limit for Over 8 H.Cause Undetermined.Tech Spec Change Request Being Developed (← links)
- RBG-25975, Ro:On 870413,personnel Discovered Core Thermal Power Not Changing Proportionally to Core Flow Changes.Caused by Feedwater Averaging Function of Computer Program Not Updating Points Values.Procedure EDP-CC-0001 Implemented (← links)
- RBG-24144, Ro:On 860703,during Monthly Surveillance Testing,Invalid Failure of Div 1 Diesel Generator Experienced.Caused by Abnormal Control Air Pressure.Faulty Pressure Switches & Logic Changed Out & Retested (← links)
- RBG-24145, Ro:On 860704,Div II Generator Failed During Surveillance Test.Caused by Lube Oil Leak on Turbocharger Bearing Feed Line.Oil Feed Line Changed Out (← links)
- RBG-25974, Special Rept Re Measured Settlement Value Outside Tech Spec 3.7.10-1 Limits.Probably Caused by Effects of Const Schedule on Structural Settlement.Calculation Revised to Account for Differences in Const Schedule (← links)
- RBG-24671, Revised Special Rept:On 860923,three of Four Allen Head Capscrews That Secure Cylinder Fuel Injection Pump Base Assembly 2 Failed.Caused by Insufficient Original Torque, Thermal Cycling,Relaxation & Vibration.Screws Replaced (← links)
- RBG-25448, Special Rept:On 870206,while Performing Surveillance Testing,Valid Failure of Div I Diesel Generator Occurred. Caused by Fall of Mounting Bolt Out of Closing Spring Charging Motor.Addl Info Re 861219 Valid Failure Rept Encl (← links)
- RBG-25222, Notification of Unusual Event:On 870112,reactor Shut Down Due to Unidentified Leakage from Rcs.Rhr B Testable Injection Check Valve 1E12*AOVF041B Identified as Major Contributor to Leakage (← links)
- RBG-25131, Rev 1 to Special Rept:On 860605,valid Failure of Div II Diesel Generator Occurred While Performing Surveillance Testing.Caused by Incorrect Test Connection Due to Inadequate Procedure.Relays Reset & Tested Successfully (← links)