Semantic search
Jump to navigation
Jump to search
| Issue date | Title | Topic | |
|---|---|---|---|
| ML20114E619 | 20 June 1996 | Forwards Event Notification Worksheet Re 960413 Event Concerning Defective Cam Follower Springs for Edgs. Replacement Springs Obtained from Mfg W/O Defect | |
| ML20205R898 | 30 March 1987 | Followup Ro:On 870317,portion of Fire Suppression Water Sys Made Inoperable Due to Leak in Piping.Small Hole Discovered in Cement Asbestos Pipe Used for Fire Protection Piping. Parts Ordered & Sys Expected to Be Back in Svc by 870430 | |
| ML20204B540 | 18 March 1987 | Ro:On 870318,portion of Tech Spec 3.7.9.1b Re Fire Suppression Sys Made Inoperable in Order to Perform Corrective Maint.Leak Developed on East Leg of Outside Fire Protection Ring Header.Broken Pipe Suspected | |
| ML20211G562 | 19 February 1987 | Special Rept:On 870212,fire Protection Sys Inoperable for More than 14 Days Due to Incomplete Calibr Procedure.Caused by Scheduling Methodology & Personnel Error.Fire Detection Sys Returned to Operation on 870212 | |
| ML20207P787 | 16 January 1987 | Ro:On 870114,fire Suppression Water Sys Inoperable,Per Tech Spec 3.7.9.1,due to Isolation of West Leg of Unit 2 Turbine Bldg Fire Header to Allow for Replacement of Pipe on Fire Hose Standpipe 48.Item Not Reportable | |
| ML20214K435 | 20 November 1986 | Followup Ro:On 861106,north Leg of Fire Suppression Water Sys Outside Ring Header Between Valves FP-109 & FP-112 Inoperable.Section Isolated to Replace Piping.Pipe Replacement Underway & Will Be Returned to Svc by 861215 | |
| ML20215E044 | 2 October 1986 | Ro:Fire Door 227 Inoperable Since 860826 Due to Operator Failure & Fire Door 350 Inoperable Between 860912 & 22 Due to Supervisor Failure.Design Change for Door 227 Initiated & Door 350 Repaired | |
| ML20197D663 | 1 May 1986 | Special Rept:Min Lower Limits of Detectability in Lake Water Sampling & Drinking Water Stations Exceeded Limits of Tech Specs.Caused by Inefficient Radiochemistry Counting Equipment.Water Samples Sent to Contractor | |
| ML20151R800 | 24 January 1986 | Special Rept:On 841202,fire Protection Deluge Sys for ESF Ventilation Sys 1-HV-AES-1 Charcoal Filters Inoperable in Excess of 14 Days.Fire Suppression Sys Manually Isolated. Tech Spec Change Request Being Processed | |
| ML20137L851 | 9 January 1986 | Ro:On 851121 & 1212,high-range Area Radiation Monitor Failed.Caused by Inadequate analog-to-digital Inherent Drift Considerations During Calibr.Monitor Recalibr & Restored to Svc on 860102.Info Submitted Per Util | |
| ML20141F204 | 27 December 1985 | Ro:On 851227,fire Suppression Water Sys Inoperable.Caused by Leak in Sys Which Resulted in Sectionalizing Outside Ring Header.Backup Fire Suppression Available from Nearby Hose Station & Dedicated Plant Fire Truck | |
| ML20137M093 | 9 December 1985 | Ro:On 851029,while in Mode 3,steam Generator PORV Radiation Monitor MRA-1701 Failed to High Alarm Status.Caused by Defective Detector.Detector Replaced & Sys Restored to Operable Status on 851113 | |
| ML20107K131 | 20 February 1985 | Ro:On 850107,low Pressure CO2 Sys Declared Inoperable When Common Halon/CO2 Piping Header Modified by Design Change DC-12-2624 & Remained Inoperable in Excess of 14 Days.Design Change Implemented to Maintain Halon Concentrations | |
| ML20101L745 | 28 December 1984 | Special Rept Re 11 Inoperable Fire Doors in Excess of 7 Days.Caused by New Door Assemblies Not Fitting Designated Location & Scheduling Problems Due to Unforeseen Installation & Hardware Problems | |
| ML20099B863 | 8 November 1984 | RO-84-021-0.Due to Complexity of Event,Updated Submission Delayed Until 841207 | |
| ML20083J833 | 20 December 1983 | Ro:On 831220,discovered That Action Statement in Tech Spec Table 3.3-13 Not Met.Samples Required for Weekly Analysis Not Continuously Collected W/Auxiliary Sampling Equipment. Followup Rept Will Be Submitted within 14 Days | |
| ML20082T125 | 5 December 1983 | RO SI-07/08:on 831104,steam Line Pressure Safety Injection Signal Switch Placed in Reset Instead of in-block Position. Train B Safety Injection Occurred.Caused by Personnel Error. Operator Counseled | |
| ML20082F697 | 21 November 1983 | Ro:On 831119,while Performing Investigation Into Why High Oxygen Level Existed in One Gas Decay Tank,Action Statement (B) of Tech Spec 3.11.2.5 Not Complied With.On 831103,waste Gas Holdup Tank Concentration Exceeded 4% | |
| ML20082J588 | 21 November 1983 | Ro:On 831119,while Performing Investigation Why High Oxygen Level Existed in Gas Decay Tank,Discovered That Concentration in Waste Gas Holdup Tank Exceeded 4% for Both Oxygen & Hydrogen on 831103 | |
| ML20082J700 | 18 November 1983 | Ro:On 831117,Loop 1 Overpower Delta Temp Rod Stop & Reactor Trip Bistable Failed & Loop 2 Overtemp Delta Temp Bistable Failed High.Module Replaced,Recalibr & Returned to Svc | |
| ML20082C610 | 14 November 1983 | Ro:On 831028,during Containment Purge,Two Radioactive Gaseous Monitoring Instruments Inoperable for 6 Hrs & 2 Minutes,Contrary to Tech Specs.Tech Spec Change Will Be Initiated to Remove Requirement for Monitors | |
| ML20081H867 | 28 October 1983 | Ro:On 831028,during Contamination Purge in Mode 5,two Radioactive Gaseous Monitoring Instruments Inoperable, Violating Tech Specs.Initially Reported 831028.Followup Rept Will Be Submitted within 14 Days | |
| ML20081G039 | 27 October 1983 | Suppl to RO Reported on 831020 Re Unit Operating in Mode 4 W/Automatic Actuation Logic Inoperable.Subsequent Review Revealed Automatic Actuation Logic Operable.Ro Retracted | |
| ML20081G343 | 25 October 1983 | Ro:On 831024,while in Operational Mode 4,for Steam Generator Crevice Flushing,Esf Automatic Actuation Logic Sys Inoperable Per Tech Specs.Followup Rept Will Be Submitted within 14 Days | |
| ML20081G985 | 20 October 1983 | Ro:On 831020,due to Misunderstanding in Communicating Requirements for Fire Protection,Hourly Fire Watch Checks for Drumming Room Not Performed as Required.Min Number of Detectors Required Not Violated.Rept Retracted | Fire Watch Hourly Fire Watch |
| ML20085K769 | 11 October 1983 | Ro:On 831003,24 H Rept Notification Made Re Incorrect Installation of Containment Hydrogen Monitoring Sys.Sys Modified & Reinstalled Correctly on 831005 | |
| ML20080R114 | 10 October 1983 | Ro:On 831007,wrong Valves Used for Ep(Z) in-core Detector Computer Code During Cycle Viii Operation | |
| ML20080Q380 | 4 October 1983 | Ro:On 831004,steam Jet Air Ejector Monitor (SRA-2905) Determined Inoperable & 8 H Grab Sample Not Completed within Required Time Frame.Followup Rept Expected within 14 Days | Grab sample |
| ML20080Q109 | 3 October 1983 | Ro:On 830930,while Making pre-startup Valve Lineups, Discovered Pump Reversal on Component Cooling Water Supply & Return Piping for Containment H Sampling Sys.Sys Being Reviewed to Determine Effect During Accident Conditions | |
| ML20080P239 | 29 September 1983 | Ro:On 830929,during Insp of Containment Lower Vol,One Drop Per Second Leak Discovered on Nonessential Svc Water Sys. Leak Originated at Packing on Manual Isolation Valve. Followup Rept Will Be Submitted within 14 Days | |
| ML20078G430 | 27 September 1983 | Ro:On 830927,during Sampling Process,Sample Valve on Boron Injection Tank Found Partially Open Allowing Boric Acid Solution to Drain Out.Caused by Personnel Error.Boron Injection Tank Brought Back Into Spec | Boric Acid |
| ML20080Q108 | 27 September 1983 | Ro:On 830926,carbon Dioxide Sys for Diesel Generator Room Left in Isolated Condition W/No Personnel in Attendance.Upon Discovery,Sys Immediately Returned to Operable Status | |
| ML20078A505 | 15 September 1983 | Ro:Penetration Cable Tunnel in Quadrant 2 Left in Isolated Condition W/O Fire Watch for Approx 2 H.Equipment in Area Not Required to Be Operable | Fire Watch |
| ML20077P112 | 6 September 1983 | Ro:On 830903,carbon Dioxide Protected Area Left in Isolated Condition W/No One Working in Area.Sys Restored to Operable Status.Followup Rept Will Be Submitted in 14 Days | |
| ML20076K789 | 5 July 1983 | Ro:On 830704,during Routine Tour of Containment,Leak Discovered in Nonessential Svc Water Sys.Written Rept Will Be Forwarded within 14 Days,Per IE Bulletin 80-24 | |
| ML20072J242 | 17 June 1983 | Ro:On 830612,performance of Train B Boron Injection Tank Inlet Piping Heat Trace Circuitry Questioned,But Train Not Declared Inoperable Until 830616.Investigation Underway | |
| ML20072C958 | 3 June 1983 | Ro:On 830603,maint Personnel Discovered Gauge Had Been Removed from Outside Wall of Outer Airlock Door Providing Vent Path from Containment to Auxiliary Bldg When Inner Airlock Door Open.Pressure Gauge Reinstalled | |
| ML20072C463 | 3 June 1983 | Ro:On 830603,during Operational Surveillance Test,Both Containment Spray Sys Made Inoperable for Approx 15 Minutes. Error Discovered in Independent Verification of Valve Lineup.Immediate Action Taken to Restore Spray Sys | |
| ML20074A606 | 9 May 1983 | Ro:On 830506,discovered That Chemical Vol Control Sys Holdup Tanks Not Sampled in 12 H Time Period Required When Automatic Gas Analyzer Inoperable.Sample Performed Approx 4-5 H Late | |
| ML20069L808 | 20 April 1983 | Ro:On 830420,waste Gas Holdup Sys Exceeded Oxygen & Hydrogen Limits.Cause Not Stated.Proposed Tech Spec Changes Increasing Oxygen Concentration Limit Will Be Reviewed by 830422.Followup Rept Will Be Submitted within 14 Days | |
| ML20073M599 | 15 April 1983 | Ro:On 830414,following Nonroutine Concentration Test,Control Room Cable Vault Halon Sys Declared Inoperable | |
| ML20073F008 | 6 April 1983 | Ro:On 830405,halon Sys Declared Inoperable Following Completion of Nonroutine Concentration Test.Followup Rept Will Be Submitted within 14 Days | |
| ML20072H306 | 17 March 1983 | Ro:On 830219,reservoir Containing Lubricating Oil for Turbine 2 Leaked Into Lake Mi.Caused by Tube Failure.Tube Plugged | |
| ML20069E548 | 14 March 1983 | Ro:On 830311,fire Door in Boron Injection Tank Room Found Not to Have Label to Substantiate Ul Certification.Cause Not Stated.Continuous Fire Watch Posted | Continuous fire watch |
| ML20072C447 | 24 February 1983 | Ro:On 830224,during Review of Computerized Printout Which Delineates Calibr Surveillance Test Schedules,Discovered That Containment Fire Detector Instrumentation Surveillance Test Not Performed | Fire Watch |
| ML20070T175 | 1 February 1983 | Ro:On 830201,outlet Valve of Spray Additive Tank Discovered in Closed Position.Valve Immediately Opened | |
| ML20064G536 | 3 January 1983 | Ro:On 821223,presence of Obstruction in Valve SI-152-S Prevented Attainment of Min Required Flow Through South Safety Injection Header.Caused by Unattached Disc from Previous Repair of SI-152-S Lodged W/Valve.Disc Removed | |
| ML20067C625 | 2 December 1982 | Ro:On 821201,west Centrifugal Charging Pump Rendered Inoperable Following Mod on East & West Centrifugal Pump Common Mini Flow Line.Caused by Cut Made on Pressurized Portion of Piping.Investigation in Progress | |
| ML20067B053 | 24 November 1982 | Ro:On 821123,essential Svc Water Sys Motor Operated Valve WMO-753 Failed to Open.Caused by Reverse Operation of Valve Due to Incorrect Installation of Cable Feeding Motor Control Ctr During 821117 Design Change | |
| ML20066A889 | 27 October 1982 | Ro:On 821027,informed That in Past Instances,Plant Did Not Correctly Implement Tech Spec 3.3.3.7 Re Defective Pyrotronics Ionization Detection.Annunciator Response Procedures Revised & Spare Detectors Provided | Fire Watch |