Category:REPORTABLE OCCURRENCE REPORT (SEE ALSO AO
MONTHYEARML17333A6931996-12-0303 December 1996
Special Rept:On 961119,containment High Range Area Monitor 1-VRA-1410 Declared Inoperable Longer than 7 Days.Caused by Monitor Detector Out of Spec.Detector Replaced
ML17333A5401996-08-16016 August 1996
Special Rept:On 960814,determined Radiation Monitor Inoperable Since Isolation of 1-MRV-213 on 960802.1-MRV-213 Leakby Problem Will Be Corrected,When Parts Become Available,Tentatively Scheduled for Oct
ML17332A2371994-07-29029 July 1994
Special Rept:On 940712,two Meteorological Towers Sustained Lightning Strikes,Which Damaged Number of Components in Sys. on 940719,another Lightning Strike Occurred Making Sys Inoperable.Repairs Made & Sys Declared Operable
ML17331A9631993-08-26026 August 1993
Special Rept:On 930610,Containment 650 Elevation High Range Train a Area Radiation Detector 2-VRA-2310 Declared Inoperable Due to Inability to Perform Channel Checks.Repair Work Completed on 930729 & Detector Declared Operable
ML17328A6511990-04-0404 April 1990
Updated Special Rept on 891113 Re Fire Door 387,Unit 1 Reactor Cable Tunnel Quadrant No 2 Door Declared Inoperable. Caused by Failure of Latching Mechanism.Design Change Provided Adequate Repair to Door
ML17325B4301990-03-0808 March 1990
Special Rept:On 900129,0202,08 & 15,four Fire Suppression Components Inoperable Longer than Allowed by Tech Spec 3.7.10.Fire Door 391 Declared Inoperable Due to Door Being Removed for Replacement.Fire Watch Maintained
ML17328A5651990-02-0505 February 1990
Special Rept:On 900102,06,08,13,16 & 24,fire Barriers on 4 Kv Complex,Reactor Cable Tunnel Door,Contractor Access Bldg & Auxiliary Cable Vault Inoperable Longer than Tech Spec 3.7.10,Action a Allows.Fire Watches Maintained
ML17328A5351990-01-0303 January 1990
Special Rept:On 891130,control Room HVAC Area Fire Doors 436 & 437 Declared Inoperable Due to Bottom Seal Not Functioning.On 891216,charging Pump Room Door 364 Declared Inoperable.On 891201,crack Discovered in Retardant Matl
ML17325B3391989-11-13013 November 1989
Special Rept Re Listed Fire Barriers Inoperable Longer than 7 Days Allowed by Tech Spec 3.7.10 Action A.Fire Watch Maintained While Barriers Inoperable
ML17325B3071989-10-30030 October 1989
Ro:On 891030,fire Suppression Water Sys Not Operable,Per Tech Spec 3.7.9.1b.Caused by Isolation of Portion of East Leg of Outside Fire Protection Ring Header.Backup Fire Protection Available.Header Returned to Svc 891103
ML17328A1741989-09-19019 September 1989
Special Rept:Eight Fire Barriers Inoperable Longer than Seven Days Allowed by Tech Specs 3.7.10.Repairs to Fire Dampers & Establishmentof Fire Watches Until Problems Resolved in Effect
ML17328A1501989-09-0808 September 1989
Ro:On 890908,fire Suppression Water Sys Determined Inoperable,Per Tech Spec 3.7.9.1.b Requirement.Caused by Planned Isolation of Portion of East & South Legs of Fire Ring Protection Header.Valve 12-FP-133 Replaced on 890921
ML17328A1491989-09-0808 September 1989
Special Rept:Seven Fire Dampers Inoperable for Longer than 7 Days Permitted Under Tech Spec 3.7.10 Action A.Caused by Incorrect Development of Task Sheet from Data Base of nonsafety-related Dampers.Maint Procedure Revised
ML17328A1051989-08-23023 August 1989
Special Rept:On 890717,two Fire Barriers Inoperable Longer than 7 Days Allowed by Tech Spec 3.7.10.Engineering Analysis Being Performed to Determine How Best to Reapply Fire Proofing Matl
ML17328A1011989-07-28028 July 1989
Special Rept:On 890217,gap Between Top of Removable Walls & Permanent Structure Separating Fire Zones 63A,63B & 63C from Fire Zone 5 Discovered During Insp.Plant Mods Will Be Completed & Fire Walls Restored to Operability by Mid 1990
ML17328A0651989-07-0505 July 1989
Special Rept:On 890531,declared Fire Door 392,auxiliary Bldg Access Control Entry Door Inoperable.Caused by Failure of Door Knob Mechanism.Fire Retardant Matl Removed from Fire Panel & Entire Door Replaced
ML17334B3131989-06-26026 June 1989
Ro:On 890611,pressurizer PORV NRV-153 Opened Automatically. PORV Opened After Starting Reactor Coolant Pump 13 During RCS Fill & Vent Procedure.Setpoints Recalculated & Instrument Uncertainties Removed
ML17325B2021989-06-0101 June 1989
Special Rept:On 890426-0516,Tech Specs Violated.Caused by Seven Listed Fire Barriers/Penetration Seals Being Inoperable for More than 7 Days.Fire Door 347 Returned to Svc on 890518 After Determining Door Improperly Setup
ML17325B1971989-05-30030 May 1989
Special Rept Re Seismic Monitoring Instrument Being Inoperable for Longer than 30 Days.New Seismic Trigger Obtained Sooner than Expected & Installed on 890523 & Declared Operable on 890526
ML17328A0401989-05-16016 May 1989
Special Rept:On 890409,several Fire Barrier Penetration Seals Separating Control Room & Control Room Cable Vault Inoperable for More than 7 Days,On 890414,fire Door 346 Declared Inoperable.Fire Watches Maintained
ML17328A0481989-05-11011 May 1989
Special Rept:On 890505,west Centrifugal Charging Pump Not Returned to Svc within 30-day App R Requirement.Compensatory Action in Form of Fire Watches Utilized in Affected Plant Areas During Period in Which Charging Pumps Unavailable
ML17328A0281989-05-0101 May 1989
Special Rept:On 890324,free Field Seismic Trigger Removed & Remained Inoperable for More than 30 Days.Caused by Unavailability of Trigger Model.Design Change Approved to Permit Installation of Comparable Substitute
ML17326B6091989-04-13013 April 1989
Ro:On 890313,6-ft Portion of Cable Tray Fire Encl for Cable Tray 2-AZC-62 Located in Fire Zone 6S Removed to Allow Installation of New Hanger.Fire Watch Established & Remained in Effect Until Encl Returned to Operable Status on 890406
ML17325B1861989-03-27027 March 1989
Ro:On 890217,fire Barriers Declared Inoperable for Longer than 7 Days Allowed by Tech Specs.Gaps Discovered Between Removable Walls & Permanent Structure.Update to 881222 Ltr Submitted.Procedures to Be Changed
ML17325B1811989-03-16016 March 1989
Ro:On 890303-05,listed Meteorlogical Instruments Inoperable for Longer than 7 Days.Caused by Series of Ice Storms That Caused Instruments to Freeze Up & Resulted in Some Wind Cups Being Broken.Instruments Repaired & Calibr
ML17326B5391989-02-23023 February 1989
Ro:On 890118,Tech Spec 3.7.9.2 Violated.Caused by Fire Door 391 Separating Fire Zones 43 & 44N Being Inoperable for More than 14 Days Due to Broken Latching Hardware.Door Expected to Return to Svc by 890331
ML17325B1331989-02-0303 February 1989
Special Rept:On 881206,fire Barrier Separating Fire Zones 56 & 44N Inoperable for More than 7 Days.Fire Watch Established & Aepsc Requested to Help Determine Reportability
ML17326B5121989-01-18018 January 1989
Special Rept:On 881219,fire Doors 392 & 386 Inoperable. Caused by Failure to Replace Screws Missing from Astragal Covering Gap Between Two Sections of Door Due to Time Needed to Obtain Certified Parts.Repair by 890215 Expected
ML17325B0831988-12-22022 December 1988
Ro:Listed Fire Barriers Inoperable for Longer than 7 Days Allowed by Tech Spec 3.7.10 Action A.Fire Damper in Line Duct Damper in Auxiliary Bldg Declared Inoperable on 881130. Followup Rept Will Be Issued When Dampers Operable
ML17326B5041988-12-0505 December 1988
Supplemental Ro:Offsite Location Found That Yields Higher Calculated Dose Through Milk Pathway,Per Land Use Census. Calculations Will Be Based on Assumption That Milk Animal Located 3,800 Meters from Plant in Each Land Sector
ML17326B4931988-11-14014 November 1988
Ro:On 881003,fire Detection Sys for 650 Ft Elevation of Auxiliary Bldg Inoperable for Longer than 14 Days.Caused by Excessive Smoke from Welding Operations for Steam Generator Replacement.Fire Watch Patrol Established
ML17325B0041988-10-31031 October 1988
Special Rept:Consisting of Results of Annual Land Use Census for 1988.Census Identified Need to Change Distances to Nearest Residences in Each Plant Land Sector Used in Calculating Offsite Doses
ML17325B0001988-10-28028 October 1988
Special Rept:Unit 2 West Motor Driven Auxiliary Feedwater Pump & Unit 1 Local Shutdown Instrumentation W/O Backup Power for Greater than 30 Days
ML17326B4751988-10-20020 October 1988
Special Rept:Fire Door 371,separating New Containment Access Bldg & Auxiliary Bldg Crane Bay,Inoperable for More than 7 Days.Due to Numerous Repairs & Repetitive Hardware Failures,Permanent Correction of Situation Being Pursued
ML17325A8881988-07-12012 July 1988
Ro:Fire Barrier Separating Fire Zones 17F & 84 Inoperable in Excess of 7 Days Permitted by Tech Specs.On 880609,void Discovered in Concrete Under Bottom of Fire Damper Connecting Fire Zones.Void Repaired
ML17325A8501988-06-21021 June 1988
Ro:On 880528,fire Door for Unit 2 Reactor Cable Tunnels Declared Inoperable in Excess of 7 Days as Specified.Gap Between Door Bottom & Door Sill Exceeded Allowable Measurement.Repairs Completed & Door Returned to Svc
ML17326B3871988-05-25025 May 1988
Ro:On 880525,fire Suppression Water Sys Placed in Less Conservative Configuration than Required by Tech Specs. Impairment Implemented Under Approved Test Procedure as Preplanned Evolution.Both Diesel Fire Pumps Returned to Svc
ML17326B3731988-04-13013 April 1988
Ro:Fire Detection Sys Inoperable for Fire Zone 34.East Main Steam Encl Has Been Inoperable in Excess of 14 Days.Caused by Inoperable Detector Spring.Replacement Parts Received.Sys Returned to Svc on 880412
ML17325A6801988-04-11011 April 1988
Ro:On 880411,fire Protection Water Sys Not Operable Per Tech Spec 3.7.9.1.b.Caused by Planned Isolation of Portion of South Leg of Outside Fire Protection Ring Header.Backup Fire Protection Available from Nearby Fire Dept
ML17326B3381988-02-0505 February 1988
Special Rept:On 880112,ionization Fire Detectors Declared Inoperable.Caused by Smoke Generated by Extensive Welding Taking Place on Auxiliary Bldg Crane.Detectors Cleaned & Returned to Svc Upon Completion of Crane Upgrade Project
ML17325A4861987-11-24024 November 1987
Ro:On 871124,fire Suppression Water Sys Inoperable.Caused by Planned Isolation of Portion of East Leg of Outside Fire Protection Ring Header to Facilitate Installation of Fire Protection Isolation Valve.Backup Fire Protection Available
ML17325A3271987-10-12012 October 1987
Ro:On 871012,fire Suppression Water Sys Not Operable Per Tech Spec 3.7.9.1b.Caused by Planned Isolation of Portion of East & South Legs of Outside Protection Ring Header for Repair of Valve.Backup Fire Protection Available
ML17325A3281987-10-0808 October 1987
Ro:On 870911,fire Door for Facility Pressurizer Heater Transformer Room Inoperable for Undetermined Length of Time. Caused by Personnel Error.Safety Pins Immediately Removed & Door Returned to Operable Status
ML17325A2831987-08-31031 August 1987
Ro:On 870831,fire Suppression Water Sys Inoperable.Caused by Planned Isolation of Portion of East & South Legs of Outside Fire Protection Ring Header to Replace Four Valves.Backup Fire Protection Available
ML17325A2381987-08-0505 August 1987
Followup RO Re Portion of North Outside Fire Protection Ring Header That Had Been Isolated Due to Leaking Fire Hydrant, Per 870803 Rept.Leak Due to Potable Water Supply Piping. Header Returned to Svc on 870804
ML17325A2431987-08-0303 August 1987
Ro:On 870709-0721,269 Steam Generator Tubes Plugged During Insp.Tubes Plugged Due to Possible Tube Wall Degradation. Conservative Evaluation Criteria Applied
ML17325A2371987-08-0303 August 1987
Ro:On 870803,fire Suppression Water Sys Inoperable Per Tech Spec 3.7.9.1.b.Caused by Isolation of North Leg of Outside Fire Protection Ring Header Due to Leaking Fire Hydrant Outside of Protected Area.Backup Fire Protection Available
ML17325A2181987-07-17017 July 1987
Special Rept:On 870610,seismic Monitoring Sys Triggered Due to Seismic Event.Calibr of Reactor Pit SMA Detector Completed on 870626.Detector to Be Declared Operable on 870711.Remaining Detectors to Be Calibr by 870727
ML17325A2081987-07-0909 July 1987
Ro:On 870709,fire Suppression Water Sys Declared Inoperable Due to Planned Isolation Required to Facilitate Installation of Fire Protection Supply Piping.Installation Expected to Be Completed within 30 Days & Sys Returned to Svc by 870808
ML17325A1721987-06-17017 June 1987
Ro:On 840707,part of Unit 1 Inside Fire Protection Ring Header Removed from Svc for Repair of Valves in Fire Sys. Isolation Removed non-Tech Spec Fire Hose Standpipe from Svc.Verbal Rept Made & Sys Repaired within 24 H
1996-08-16
[Table view]
Category:LER)
MONTHYEARML17333A6931996-12-0303 December 1996
Special Rept:On 961119,containment High Range Area Monitor 1-VRA-1410 Declared Inoperable Longer than 7 Days.Caused by Monitor Detector Out of Spec.Detector Replaced
ML17333A5401996-08-16016 August 1996
Special Rept:On 960814,determined Radiation Monitor Inoperable Since Isolation of 1-MRV-213 on 960802.1-MRV-213 Leakby Problem Will Be Corrected,When Parts Become Available,Tentatively Scheduled for Oct
ML17332A2371994-07-29029 July 1994
Special Rept:On 940712,two Meteorological Towers Sustained Lightning Strikes,Which Damaged Number of Components in Sys. on 940719,another Lightning Strike Occurred Making Sys Inoperable.Repairs Made & Sys Declared Operable
ML17331A9631993-08-26026 August 1993
Special Rept:On 930610,Containment 650 Elevation High Range Train a Area Radiation Detector 2-VRA-2310 Declared Inoperable Due to Inability to Perform Channel Checks.Repair Work Completed on 930729 & Detector Declared Operable
ML17328A6511990-04-0404 April 1990
Updated Special Rept on 891113 Re Fire Door 387,Unit 1 Reactor Cable Tunnel Quadrant No 2 Door Declared Inoperable. Caused by Failure of Latching Mechanism.Design Change Provided Adequate Repair to Door
ML17325B4301990-03-0808 March 1990
Special Rept:On 900129,0202,08 & 15,four Fire Suppression Components Inoperable Longer than Allowed by Tech Spec 3.7.10.Fire Door 391 Declared Inoperable Due to Door Being Removed for Replacement.Fire Watch Maintained
ML17328A5651990-02-0505 February 1990
Special Rept:On 900102,06,08,13,16 & 24,fire Barriers on 4 Kv Complex,Reactor Cable Tunnel Door,Contractor Access Bldg & Auxiliary Cable Vault Inoperable Longer than Tech Spec 3.7.10,Action a Allows.Fire Watches Maintained
ML17328A5351990-01-0303 January 1990
Special Rept:On 891130,control Room HVAC Area Fire Doors 436 & 437 Declared Inoperable Due to Bottom Seal Not Functioning.On 891216,charging Pump Room Door 364 Declared Inoperable.On 891201,crack Discovered in Retardant Matl
ML17325B3391989-11-13013 November 1989
Special Rept Re Listed Fire Barriers Inoperable Longer than 7 Days Allowed by Tech Spec 3.7.10 Action A.Fire Watch Maintained While Barriers Inoperable
ML17325B3071989-10-30030 October 1989
Ro:On 891030,fire Suppression Water Sys Not Operable,Per Tech Spec 3.7.9.1b.Caused by Isolation of Portion of East Leg of Outside Fire Protection Ring Header.Backup Fire Protection Available.Header Returned to Svc 891103
ML17328A1741989-09-19019 September 1989
Special Rept:Eight Fire Barriers Inoperable Longer than Seven Days Allowed by Tech Specs 3.7.10.Repairs to Fire Dampers & Establishmentof Fire Watches Until Problems Resolved in Effect
ML17328A1501989-09-0808 September 1989
Ro:On 890908,fire Suppression Water Sys Determined Inoperable,Per Tech Spec 3.7.9.1.b Requirement.Caused by Planned Isolation of Portion of East & South Legs of Fire Ring Protection Header.Valve 12-FP-133 Replaced on 890921
ML17328A1491989-09-0808 September 1989
Special Rept:Seven Fire Dampers Inoperable for Longer than 7 Days Permitted Under Tech Spec 3.7.10 Action A.Caused by Incorrect Development of Task Sheet from Data Base of nonsafety-related Dampers.Maint Procedure Revised
ML17328A1051989-08-23023 August 1989
Special Rept:On 890717,two Fire Barriers Inoperable Longer than 7 Days Allowed by Tech Spec 3.7.10.Engineering Analysis Being Performed to Determine How Best to Reapply Fire Proofing Matl
ML17328A1011989-07-28028 July 1989
Special Rept:On 890217,gap Between Top of Removable Walls & Permanent Structure Separating Fire Zones 63A,63B & 63C from Fire Zone 5 Discovered During Insp.Plant Mods Will Be Completed & Fire Walls Restored to Operability by Mid 1990
ML17328A0651989-07-0505 July 1989
Special Rept:On 890531,declared Fire Door 392,auxiliary Bldg Access Control Entry Door Inoperable.Caused by Failure of Door Knob Mechanism.Fire Retardant Matl Removed from Fire Panel & Entire Door Replaced
ML17334B3131989-06-26026 June 1989
Ro:On 890611,pressurizer PORV NRV-153 Opened Automatically. PORV Opened After Starting Reactor Coolant Pump 13 During RCS Fill & Vent Procedure.Setpoints Recalculated & Instrument Uncertainties Removed
ML17325B2021989-06-0101 June 1989
Special Rept:On 890426-0516,Tech Specs Violated.Caused by Seven Listed Fire Barriers/Penetration Seals Being Inoperable for More than 7 Days.Fire Door 347 Returned to Svc on 890518 After Determining Door Improperly Setup
ML17325B1971989-05-30030 May 1989
Special Rept Re Seismic Monitoring Instrument Being Inoperable for Longer than 30 Days.New Seismic Trigger Obtained Sooner than Expected & Installed on 890523 & Declared Operable on 890526
ML17328A0401989-05-16016 May 1989
Special Rept:On 890409,several Fire Barrier Penetration Seals Separating Control Room & Control Room Cable Vault Inoperable for More than 7 Days,On 890414,fire Door 346 Declared Inoperable.Fire Watches Maintained
ML17328A0481989-05-11011 May 1989
Special Rept:On 890505,west Centrifugal Charging Pump Not Returned to Svc within 30-day App R Requirement.Compensatory Action in Form of Fire Watches Utilized in Affected Plant Areas During Period in Which Charging Pumps Unavailable
ML17328A0281989-05-0101 May 1989
Special Rept:On 890324,free Field Seismic Trigger Removed & Remained Inoperable for More than 30 Days.Caused by Unavailability of Trigger Model.Design Change Approved to Permit Installation of Comparable Substitute
ML17326B6091989-04-13013 April 1989
Ro:On 890313,6-ft Portion of Cable Tray Fire Encl for Cable Tray 2-AZC-62 Located in Fire Zone 6S Removed to Allow Installation of New Hanger.Fire Watch Established & Remained in Effect Until Encl Returned to Operable Status on 890406
ML17325B1861989-03-27027 March 1989
Ro:On 890217,fire Barriers Declared Inoperable for Longer than 7 Days Allowed by Tech Specs.Gaps Discovered Between Removable Walls & Permanent Structure.Update to 881222 Ltr Submitted.Procedures to Be Changed
ML17325B1811989-03-16016 March 1989
Ro:On 890303-05,listed Meteorlogical Instruments Inoperable for Longer than 7 Days.Caused by Series of Ice Storms That Caused Instruments to Freeze Up & Resulted in Some Wind Cups Being Broken.Instruments Repaired & Calibr
ML17326B5391989-02-23023 February 1989
Ro:On 890118,Tech Spec 3.7.9.2 Violated.Caused by Fire Door 391 Separating Fire Zones 43 & 44N Being Inoperable for More than 14 Days Due to Broken Latching Hardware.Door Expected to Return to Svc by 890331
ML17325B1331989-02-0303 February 1989
Special Rept:On 881206,fire Barrier Separating Fire Zones 56 & 44N Inoperable for More than 7 Days.Fire Watch Established & Aepsc Requested to Help Determine Reportability
ML17326B5121989-01-18018 January 1989
Special Rept:On 881219,fire Doors 392 & 386 Inoperable. Caused by Failure to Replace Screws Missing from Astragal Covering Gap Between Two Sections of Door Due to Time Needed to Obtain Certified Parts.Repair by 890215 Expected
ML17325B0831988-12-22022 December 1988
Ro:Listed Fire Barriers Inoperable for Longer than 7 Days Allowed by Tech Spec 3.7.10 Action A.Fire Damper in Line Duct Damper in Auxiliary Bldg Declared Inoperable on 881130. Followup Rept Will Be Issued When Dampers Operable
ML17326B5041988-12-0505 December 1988
Supplemental Ro:Offsite Location Found That Yields Higher Calculated Dose Through Milk Pathway,Per Land Use Census. Calculations Will Be Based on Assumption That Milk Animal Located 3,800 Meters from Plant in Each Land Sector
ML17326B4931988-11-14014 November 1988
Ro:On 881003,fire Detection Sys for 650 Ft Elevation of Auxiliary Bldg Inoperable for Longer than 14 Days.Caused by Excessive Smoke from Welding Operations for Steam Generator Replacement.Fire Watch Patrol Established
ML17325B0041988-10-31031 October 1988
Special Rept:Consisting of Results of Annual Land Use Census for 1988.Census Identified Need to Change Distances to Nearest Residences in Each Plant Land Sector Used in Calculating Offsite Doses
ML17325B0001988-10-28028 October 1988
Special Rept:Unit 2 West Motor Driven Auxiliary Feedwater Pump & Unit 1 Local Shutdown Instrumentation W/O Backup Power for Greater than 30 Days
ML17326B4751988-10-20020 October 1988
Special Rept:Fire Door 371,separating New Containment Access Bldg & Auxiliary Bldg Crane Bay,Inoperable for More than 7 Days.Due to Numerous Repairs & Repetitive Hardware Failures,Permanent Correction of Situation Being Pursued
ML17325A8881988-07-12012 July 1988
Ro:Fire Barrier Separating Fire Zones 17F & 84 Inoperable in Excess of 7 Days Permitted by Tech Specs.On 880609,void Discovered in Concrete Under Bottom of Fire Damper Connecting Fire Zones.Void Repaired
ML17325A8501988-06-21021 June 1988
Ro:On 880528,fire Door for Unit 2 Reactor Cable Tunnels Declared Inoperable in Excess of 7 Days as Specified.Gap Between Door Bottom & Door Sill Exceeded Allowable Measurement.Repairs Completed & Door Returned to Svc
ML17326B3871988-05-25025 May 1988
Ro:On 880525,fire Suppression Water Sys Placed in Less Conservative Configuration than Required by Tech Specs. Impairment Implemented Under Approved Test Procedure as Preplanned Evolution.Both Diesel Fire Pumps Returned to Svc
ML17326B3731988-04-13013 April 1988
Ro:Fire Detection Sys Inoperable for Fire Zone 34.East Main Steam Encl Has Been Inoperable in Excess of 14 Days.Caused by Inoperable Detector Spring.Replacement Parts Received.Sys Returned to Svc on 880412
ML17325A6801988-04-11011 April 1988
Ro:On 880411,fire Protection Water Sys Not Operable Per Tech Spec 3.7.9.1.b.Caused by Planned Isolation of Portion of South Leg of Outside Fire Protection Ring Header.Backup Fire Protection Available from Nearby Fire Dept
ML17326B3381988-02-0505 February 1988
Special Rept:On 880112,ionization Fire Detectors Declared Inoperable.Caused by Smoke Generated by Extensive Welding Taking Place on Auxiliary Bldg Crane.Detectors Cleaned & Returned to Svc Upon Completion of Crane Upgrade Project
ML17325A4861987-11-24024 November 1987
Ro:On 871124,fire Suppression Water Sys Inoperable.Caused by Planned Isolation of Portion of East Leg of Outside Fire Protection Ring Header to Facilitate Installation of Fire Protection Isolation Valve.Backup Fire Protection Available
ML17325A3271987-10-12012 October 1987
Ro:On 871012,fire Suppression Water Sys Not Operable Per Tech Spec 3.7.9.1b.Caused by Planned Isolation of Portion of East & South Legs of Outside Protection Ring Header for Repair of Valve.Backup Fire Protection Available
ML17325A3281987-10-0808 October 1987
Ro:On 870911,fire Door for Facility Pressurizer Heater Transformer Room Inoperable for Undetermined Length of Time. Caused by Personnel Error.Safety Pins Immediately Removed & Door Returned to Operable Status
ML17325A2831987-08-31031 August 1987
Ro:On 870831,fire Suppression Water Sys Inoperable.Caused by Planned Isolation of Portion of East & South Legs of Outside Fire Protection Ring Header to Replace Four Valves.Backup Fire Protection Available
ML17325A2381987-08-0505 August 1987
Followup RO Re Portion of North Outside Fire Protection Ring Header That Had Been Isolated Due to Leaking Fire Hydrant, Per 870803 Rept.Leak Due to Potable Water Supply Piping. Header Returned to Svc on 870804
ML17325A2431987-08-0303 August 1987
Ro:On 870709-0721,269 Steam Generator Tubes Plugged During Insp.Tubes Plugged Due to Possible Tube Wall Degradation. Conservative Evaluation Criteria Applied
ML17325A2371987-08-0303 August 1987
Ro:On 870803,fire Suppression Water Sys Inoperable Per Tech Spec 3.7.9.1.b.Caused by Isolation of North Leg of Outside Fire Protection Ring Header Due to Leaking Fire Hydrant Outside of Protected Area.Backup Fire Protection Available
ML17325A2181987-07-17017 July 1987
Special Rept:On 870610,seismic Monitoring Sys Triggered Due to Seismic Event.Calibr of Reactor Pit SMA Detector Completed on 870626.Detector to Be Declared Operable on 870711.Remaining Detectors to Be Calibr by 870727
ML17325A2081987-07-0909 July 1987
Ro:On 870709,fire Suppression Water Sys Declared Inoperable Due to Planned Isolation Required to Facilitate Installation of Fire Protection Supply Piping.Installation Expected to Be Completed within 30 Days & Sys Returned to Svc by 870808
ML17325A1721987-06-17017 June 1987
Ro:On 840707,part of Unit 1 Inside Fire Protection Ring Header Removed from Svc for Repair of Valves in Fire Sys. Isolation Removed non-Tech Spec Fire Hose Standpipe from Svc.Verbal Rept Made & Sys Repaired within 24 H
1996-08-16
[Table view]
Category:TEXT-SAFETY REPORT
MONTHYEARML17335A5641999-10-18018 October 1999
LER 99-024-00:on 990708,literal TS Requirements Were Not Met by Accumlator Valve Surveillance.Caused by Misjudgement Made in Conversion from Initial DC Cook TS to W Std Ts.Submitted License Amend Request.With 991018 Ltr
ML17335A5531999-10-0707 October 1999
LER 99-023-00:on 990907,inadequate TS Surveillance Testing of ESW Pump ESF Response Time Noted.Caused by Inadequate Understanding of Plant Design Basis.Surveillance Tests Will Be Revised & Implemented
ML17335A5631999-09-30030 September 1999
Monthly Operating Rept for Sept 1999 for DC Cook Nuclear Plant,Unit 1.With 991012 Ltr
ML17335A5621999-09-30030 September 1999
Monthly Operating Rept for Sept 1999 for DC Cook Nuclear Plant,Unit 2.With 991012 Ltr
ML17335A5481999-09-30030 September 1999
Non-proprietary DC Cook Nuclear Plant Units 1 & 2 Mods to Containment Sys W SE (Secl 99-076,Rev 3).
ML17335A5451999-09-28028 September 1999
Rev 1 to Containment Sump Level Design Condition & Failure Effects Analysis for Potential Draindown Scenarios.
ML17326A1291999-09-17017 September 1999
LER 99-022-00:on 990609,electrical Bus Degraded Voltage Setpoints Too Low for Safety Related Loads,Was Discovered. Caused by Lack of Understanding of Design of Plant.No Immediate Corrective Actions Necessary
ML17326A1481999-09-17017 September 1999
Independent Review of Control Rod Insertion Following Cold Leg Lbloca,Dc Cook,Units 1 & 2.
ML17326A1211999-08-31031 August 1999
Monthly Operating Rept for Aug 1999 for Cook Nuclear Plant, Unit 2.With 990915 Ltr
ML17326A1201999-08-31031 August 1999
Monthly Operating Rept for Aug 1999 for Cook Nuclear Plant, Unit 1.With 990915 Ltr
ML17326A1121999-08-27027 August 1999
LER 99-021-00:on 990728,determined That GL 96-01 Test Requirements Were Not Met in Surveillance Tests.Caused by Failure to Understand Full Extent of GL Requirements. Surveillance Procedures Will Be Revised or Developed
ML17326A1011999-08-26026 August 1999
LER 99-020-00:on 990727,EDGs Were Declared Inoperable.Caused by Inadequate Protection of Air Intake,Exhaust & Room Ventilation Structures from Tornado Missile Hazards. Implemented Compensatory Measures in Form of ACs
ML17326A0911999-08-16016 August 1999
LER 99-019-00:on 990716,noted Victoreen Containment Hrrms Not Environmentally Qualified to Withstand post-LOCA Conditions.Caused by Inadequate Design Control.Reviewing Options to Support Hrrms Operability in Modes 1-4
ML17326A0771999-08-0404 August 1999
LER 98-029-01:on 980422,noted That Fuel Handling Area Ventilation Sys Was Inoperable.Caused by Original Design Deficiency.Radiological Analysis for Spent Fuel Handling Accidents in Auxiliary Bldg Will Be Redone by 990830
ML17335A5461999-08-0202 August 1999
Rev 0 to Evaluation of Cook Recirculation Sump Level for Reduced Pump Flow Rates.
ML17326A0871999-07-31031 July 1999
Monthly Operating Rept for July 1999 for DC Cook Nuclear Plant,Unit 1.With 990812 Ltr
ML17326A0861999-07-31031 July 1999
Monthly Operating Rept for July 1999 for DC Cook Nuclear Plant,Units 2.With 990812 Ltr
ML17326A0741999-07-29029 July 1999
LER 99-018-00:on 990629,determined That Valve Yokes May Yield Under Combined Stress of Seismic Event & Static,Valve Closed,Stem Thrust.Caused by Inadequate Design of Associated Movs.Operability Determinations Were Performed for Valves
ML17326A0661999-07-26026 July 1999
LER 99-017-00:on 990625,noted That Improperly Installed Fuel Oil Return Relief Valve Rendered EDG Inoperable.Caused by Personnel Error.Fuel Oil Return Valve Was Replaced with Valve in Correct Orientation.With 990722 Ltr
ML17326A0651999-07-22022 July 1999
LER 98-014-03:on 980310,noted That Response to high-high Containment Pressure Procedure Was Not Consistent with Analysis of Record.Caused by Inadequate Interface with W. FRZ-1 Will Be Revised to Be Consistent with New Analysis
ML17326A0491999-07-13013 July 1999
LER 99-016-00:on 990615,TS Requirements for Source Range Neutron Flux Monitors Not Met.Caused by Failure to Understand Design Basis of Plant.Procedures Revised.With 990713 Ltr
ML17326A0331999-07-0101 July 1999
LER 99-004-01:on 971030,failure to Perform TS Surveillance Analyses of Reactor Coolant Chemistry with Fuel Removed Was Noted.Caused by Ineffective Mgt of Tss.Chemistry Personnel Have Been Instructed on Requirement to Follow TS as Written
ML17326A0511999-06-30030 June 1999
Monthly Operating Rept for June 1999 for DC Cook Nuclear Plant,Unit 2.With 990709 Ltr
ML17326A0501999-06-30030 June 1999
Monthly Operating Rept for June 1999 for DC Cook Nuclear Plant,Unit 1.With 990709 Ltr
ML17326A0151999-06-18018 June 1999
LER 99-014-00:on 990521,determined That Boron Injection Tank Manway Bolts Were Not Included in ISI Program,Creating Missed Exam for Previous ISI Interval.Caused by Programmatic Weakness.Isi Program & Associated ISI Database Modified
ML17325B6421999-06-0101 June 1999
LER 99-013-00:on 990327,safety Injection & Centrifugal Charging Throttle Valve Cavitation During LOCA Could Have Led to ECCS Pump Failure.Caused by Inadequate Original Design Application of Si.Throttle Valves Will Be Developed
ML17325B6311999-06-0101 June 1999
LER 99-S03-00:on 990430,vital Area Barrier Degradation Was Noted.Caused by Inadequate Insp & Maint of Vital Area Barrier.Repairs & Mods Were Made to Barriers to Eliminate Degraded & Nonconforming Conditions
ML17326A0061999-05-31031 May 1999
Monthly Operating Rept for May 1999 for Dcp.With 990609 Ltr
ML17326A0071999-05-31031 May 1999
Monthly Operating Rept for May 1999 for DC Cook Nuclear Plant,Unit 2.With 990609 Ltr
ML17325B6351999-05-28028 May 1999
LER 99-S02-00:on 990428,vulnerability in Safeguard Sys That Could Allow Unauthorized Access to Protected Area Was Noted. Caused by Inadequate Original Plant Design.Mods Were Made to Wall Opening to Eliminate Nonconforming Conditions
ML17265A8231999-05-24024 May 1999
LER 98-037-01:on 990422,determined That Ice Condenser Bypass Leakage Exceeds Design Basis Limit.Caused by Pressure Seal Required by Revised W Design Not Incorporated Into Aep Design.Numerous Matl Condition Walkdowns & Assessments Made
ML17325B6001999-05-20020 May 1999
LER 99-012-00:on 990420,concluded That Auxiliary Bldg ESF Ventilation Sys Not Capable of Maintaining ESF Room Temps post-accident.Caused by Inadequate Control of Sys Design Inputs.Comprehensive Action Plan Being Developed
ML17325B5861999-05-10010 May 1999
LER 99-002-00:on 990415,discovered That TS 4.0.5 Requirements Were Not Met Due to Improperly Performed Test. Caused by Incorrect Interpretation of ASME Code.App J Testing Will Be Completed & Procedures Will Be Revised
ML17325B5811999-05-0404 May 1999
LER 99-011-00:on 990407,air Sys for EDG Will Not Support Long Operability.Caused by Original Design Error.Temporary Mod to Supply Makeup Air Capability in Modes 5 & 6 Was Prepared
ML17325B5771999-05-0303 May 1999
LER 99-010-00:on 990401,RCS Leak Detection Sys Sensitivity Not in Accordance with Design Requirements Occurred.Caused by Inadequate Original Design of Containment Sump Level. Evaluation Will Be Performed to Clearly Define Design
ML17335A5301999-04-30030 April 1999
Monthly Operating Rept for Apr 1999 for DC Cook Nuclear Plant,Unit 1.With 990508 Ltr
ML17335A5291999-04-30030 April 1999
Monthly Operating Rept for Apr 1999 for DC Cook Nuclear Plant,Unit 2.With 990508 Ltr
ML17325B5581999-04-16016 April 1999
LER 99-006-00:on 990115,personnel Identified Discrepancy Between TS 3.9.7 Impact Energy Limit & Procedure 12 Ohp 4030.STP.046.Caused by Lack of Design Basis Control.Placed Procedure 12 Ohp 4030.STP.046 on Administrative Hold
ML17325B5471999-04-12012 April 1999
LER 99-009-00:on 990304,as-found RHR Safety Relief Valve Lift Setpoint Greater than TS Limit Occurred.Cause Investigation for Condition Has Not Been Completed.Update to LER Will Be Submitted,Upon Completion of Investigation
ML17325B5321999-04-0707 April 1999
LER 99-S01-00:on 990308,discovered That Lock for Vital Gate Leading to Plant 4KV Switchgear Area Was Nonconforming & Vulnerable to Unauthorized Access.Caused by Inadequate Gate Design & Inadequate Procedures.Mods Are Being Made to Gate
ML17325B5161999-04-0101 April 1999
LER 99-007-00:on 981020,calculations Showed That Divider Barrier Between Upper & Lower Containment Vols Were Overstressed.Engineers Are Currently Working on Analyses of Loads & Stress on Enclosures
ML17325B5491999-03-31031 March 1999
Monthly Operating Rept for Mar 1999 for DC Cook Nuclear Plant Unit 2.With 990408 Ltr
ML17325B5441999-03-31031 March 1999
Monthly Operating Rept for Mar 1999 for DC Cook Nuclear Plant,Unit 1.With 990408 Ltr
ML17325B5221999-03-29029 March 1999
LER 99-001-00:on 960610,degraded Component Cooling Water Flow to Containment Main Steam Line Penetrations,Identified on 990226.Caused by Inadequate Understanding of Design Basis.Additional Investigations Ongoing
ML17325B4801999-03-18018 March 1999
LER 99-004-00:on 971030,failure to Perform TS Surveillance Analyses of Rc Chemistry with Fuel Removed Was Noted.Cause of Event Is Under Investigation.Corrected Written Job Order Activities Used to Control SD Chemistry Sampling
ML17325B4741999-03-18018 March 1999
LER 99-005-00:on 940512,determined That Rt Breaker Manual Actuations During Rod Drop Testing Were Not Previously Reported.Caused by Lack of Training.Addl Corrective Actions,Including Preventative Actions May Be Developed
ML17325B5671999-03-0202 March 1999
Summary of Unit 1 Steam Generator Layup Chemistry from 980101 to 990218.
ML17325B4631999-02-28028 February 1999
Monthly Operating Rept for Feb 1999 for DC Cook Nuclear Power Station,Unit 2.With 990308 Ltr
ML17325B4621999-02-28028 February 1999
Monthly Operating Rept for Feb 1999 for DC Cook Nuclear Plant,Unit 1.With 990308 Ltr
ML17325B4571999-02-24024 February 1999
LER 99-003-00:on 990107,CR Pressurization Sys Surveillance Test Did Not Test Sys in Normal Operating Condition.Caused by Failure to Recognize Door 12DR-AUX415 as Part of CR Pressure Boundary.Performed Walkdown of Other Doors
1999-09-30
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