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| Issue date | Title | Topic | |
|---|---|---|---|
| BVY-99-109, Ro:On 990812,stack Ng Effluent Instrumentation for PAM Was Declared Oos.Caused by Instrument Drift Due to Electronic Components Based on Insps by Instrumentation & Controls Dept.Detector & Preamplifier Will Be Replaced on 990831 | 19 August 1999 | Ro:On 990812,stack Ng Effluent Instrumentation for PAM Was Declared Oos.Caused by Instrument Drift Due to Electronic Components Based on Insps by Instrumentation & Controls Dept.Detector & Preamplifier Will Be Replaced on 990831 | |
| ML20209J008 | 14 July 1999 | Special Rept:On 990615,diesel Driven Fire Pump Failed to Achieve Rated Flow of 2500 Gallons Per Minute.Pump Was Inoperable for Greater than 7 Days.Corrective Maint Was Performed to Reset Pump Lift Setting | |
| BVY-97-171, Special Rept:On 971105,fire Alarm Panel & Suppression Sys Were Out of Svc Greater than 14 Days.Caused by Hardware Problems W/New Zone Modules Developed During Mods.Sys Placed Back in Svc on 971121 | 12 December 1997 | Special Rept:On 971105,fire Alarm Panel & Suppression Sys Were Out of Svc Greater than 14 Days.Caused by Hardware Problems W/New Zone Modules Developed During Mods.Sys Placed Back in Svc on 971121 | Fire Watch |
| BVY-97-101, Special Rept:On 970717,determined Ongoing or Recent Contamination Event Could Be Source of Detected Environ Radioactivity.Collection,Analysis & Review of Results of Addl Grab Samples from North Storm Drain Outfall | 8 August 1997 | Special Rept:On 970717,determined Ongoing or Recent Contamination Event Could Be Source of Detected Environ Radioactivity.Collection,Analysis & Review of Results of Addl Grab Samples from North Storm Drain Outfall | Grab sample |
| ML20148B870 | 22 April 1997 | Special Rept:On 970123,periodic Source Leakage Test of 150 Uci Cs-137 Source Revealed Presence of Greater than 0.005 Uci of Removable Contamination.Source Removed from Svc & Will Be Disposed of IAW Applicable Regulatory Requirements | Time of Discovery |
| ML20135E026 | 27 February 1997 | Special Rept:On 970116,Cable Vault CO2 & Diesel Fire Pump Day Tank Room CO2 Sys Place in Abort.Caused by Installation of New Low Pressure CO2 Sys for Switchgear Rooms.Established Compensatory Measures & Required Manual Initiation for Sys | Fire Watch |
| ML20112F800 | 7 June 1996 | Special Rept:On 960424,fire Protection Sys Declared Inoperable as Conservative Precaution for Greater than 14 Days.Calculations for Sys May Not Accurately Reflect Pressure Loss.Mods Being Developed | Fire Watch Hourly Fire Watch |
| ML20108C671 | 2 May 1996 | Special Rept:On 960320,switchgear CO2 Sys Declared Inoperable.Suppression Sys Remains Capable of Automatic Initiation & Compensatory Measure Will Remain in Effect Until Confirmatory Testing Completed | Fire Watch Hourly Fire Watch |
| ML20064C350 | 23 February 1994 | Special Rept:On 940127 & 0209,electric Fire Pump Motor Failed to Start Due to Motor Breaker Trip.Redirected Room Heater Discharge to Diesel Fire Pump Engine Area | |
| BVY-92-105, Special Rept:On 920810,electric Fire Pump Portion of Vital Fire Suppression Water Sys Equipment Inoperable for 17 Days. Caused by Need to Perform Preventive maint.Diesel-driven Fire Pump Remained Operable & Contingency Plans Developed | 11 September 1992 | Special Rept:On 920810,electric Fire Pump Portion of Vital Fire Suppression Water Sys Equipment Inoperable for 17 Days. Caused by Need to Perform Preventive maint.Diesel-driven Fire Pump Remained Operable & Contingency Plans Developed | |
| ML20248B985 | 2 June 1989 | Special Rept:On 890421,cable Vault Carbon Dioxide (CO2) Sys & on 890424,diesel Fire Pump Day Tank Room CO2 Sys Declared Inoperable.Fire Protection Sys Out of Svc for More than 14 by 890602.Fire Watches Established | Continuous fire watch Fire Watch |
| ML20236E275 | 14 March 1989 | Special Rept:U Slab Source Found to Be Leaking Contamination During Semiannual Radioactive Source Leak Test.Caused by Break Down of Adhesive That Hold Mylar Covering.Source Removed from Svc & Deconned & Resealed W/New Covering | |
| ML20112E182 | 7 October 1983 | Rev 1 to RO 83-06:accumulative from 840810-23,buildup of Detectable Quantities of plant-related Co-60 in Connecticut River.Caused by Turbine Bldg Roof Vents Failing to Filter Waste.Procedural Changes Implemented | |
| ML20086E220 | 10 March 1975 | Ro:On 750209 & 10,excessive Level of Heat Rejected to Connecticut River & Filter Paper Sample Whisked from Numbed Technician Hand by Wind,Respectively.Events Caused by Lack of Communication & Wind,Respectively | |
| ML20086E410 | 9 January 1975 | Ro:On 741126,RHR Svc Water Pump C (P-8-1C) 1,200-amp Circuit Breaker Encountered Significant Damage During Attempted Start.Caused by Migrating Ionized Gases Causing Front Primary Disconnect Device Failure.Breaker Replaced | |
| ML20086E657 | 25 April 1974 | Ro:On 740414-16,each Operable Control Rod Not Fully Inserted Was Not Exercised One Notch During Surveillance Exercise. Cause Not Stated.Strict Adherence to Surveillance Test Schedule Emphasized | |
| ML20086D871 | 6 March 1973 | Ro:On 730205,all-purpose Fuel Grapple Became Detached from Jib Crane Hoist Cable When Tension Applied to Cable.Caused by Design Error.Grapple & Cable End Stud Reassembled,End Stud Drilled & Roll Pin Installed & Staked |