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 Issue dateTitleTopic
ML20217F83129 September 1997Special Rept 97-03-00,on 970921,declared Radiation Monitor R-60B Inoperable Due to Periodic Spiking Into Alarm W/No Apparent Reason.Isolated Problem to Detector & Will Repair Monitor During Next Outage When Plant Is in Cold Shutdown
ML20149G23518 July 1997Special Rept 97-001:on 970704,radiation Monitor R-60C Declared Inoperable Due to Monitor Normal Light Not Being Lit & Erroneous Data Indicated on Plant Computer.Mandatory LCO Written for Monitor R-60C
ML20134L40612 November 1996Special Rept 96-001:on 961015,unit Operating in Solid Plant Pressure Control in Mode 5 W/Rcs Temp Band of 175 to 180 Degrees.Caused by Binding of Charging Flow Control Valve. Charging Flow Control Valve Components Have Been Replaced
ML20092C6418 September 1995Special Rept:On 950806,containment Area RM R-27A Declared Inoperable Due to Instrument Displaying Invalid Alarm.Caused by Failed Connector Seal.Connector Seal Replaced & RM R-27A Returned to Operable Status on 950813
ML20126B82317 December 1992Special Rept 92-007:on 921121,Train a RHR Pump Suction Relief Valve Lifted to Mitigate RCS Pressure Transient in Response to Pressure Increase.Operations Procedures Revised & Westinghouse Provided Lower RCS Pressure Operating Band
ML20116K46213 November 1992Special Rept 92-005:on 921020 Containment Equipment Hatch Opened to Support Outage Activities & Remained Inoperable for More than 7 Days,Resulting in Breach of Fire Barrier. Containment Equipment Hatch Closed on 921101Fire Barrier
Continuous fire watch
Hourly Fire Watch
ML20116E7605 November 1992Special Rept 92-006:on 921026,three Fire Suppression Water Sys High Pressure Pumps Inoperable for 36 Minutes.Diesel Driven Fire Pump Was Capable of Starting & Running During Pumps Inoperability & Fire Protection Pressure MaintainedPacking leak
ML20116E8725 November 1992Special Rept 92-004on 920927,five Ton CO-2 Unit for DG Bldg Isolated for Greater than 14 Days to Allow Investigation of Inadvertent Sys Discharge Into 1J 4,160 Volt Bus.Operable Status Restored on 921025
ML20116B72627 October 1992Special Rept:On 921026,three Fire Suppression Water Sys High Pressure Pumps Declared Inoperable.Caused by Scheduled Outage Maint on Pump Electrical Supply Bus.Sys Pressure Maintained Throughout Event
ML20113H50728 July 1992Special Rept 92-003:on 920715,section of Pipe in Fire Main Yard Ruptured,Causing Fire Protection Water Tank Levels to Drop Below TS 3.7.11.1 Levels & Fire Main Water Pressure Lost.Fire Pumps Restored & Rupture Isolated
ML20101S88616 July 1992Special Rept:On 920715,section of Pipe in Fire Main Yard Loop Ruptured,Causing Loss of Fire Main Water Pressure. Rupture Isolated,Fire Pumps Restored & Fire Water Tank Levels Recovered to TS Required Levels
ML20095J33828 April 1992Special Rept:On 920329,seven-day Time Limit for Equipment Hatch Was Exceeded.Caused by Extensive Work Being Performed. Containment Equipment Hatch Closed on 920406Fire Barrier
Continuous fire watch
Hourly Fire Watch
ML20085G14218 October 1991Special Rept 91-007:on 910905,smoke Detection Sys Inoperable for More than 14 Days.Caused by Need to Install New Control Panels & New Smoke Detectors for Existing Fire Detection Sys.Sys Returned to Svc on 910926
ML20085D4948 October 1991Special Rept 91-006:on 910827,low Pressure CO2 Distribution Sys for Auxiliary Bldg Isolated & Declared Inoperable Due to Leak from Underground Line.Damaged Line Replaced & Placed Into Svc
ML20082P9386 September 1991Special Rept 91-005:listed Four Fire Dampers Did Not Meet Acceptance Criterion of Closing W/Max Air Flow & Declared Inoperable.Design Change Requests Submitted to Mod Dampers to Ensure Proper Operation Under All Sys Conditons
ML20082H62719 August 1991Special Rept 91-004:on 910806,water Level in Both Fire Protection Water Storage Tanks Observed to Be Below Ts. Procedure Changes Made to Verify Pressure Alarm Switches Are Properly Aligned & to Check Clapper Valve Supply Pressures
ML20077M4017 August 1991Ro:On 910806,valve in Fire Protection Supply Header to Unit Cooling Towers Inadvertently Opened Causing Level in Fire Protection Water Storage Tanks to Decrease Below Required Tech Spec.Valve Isolated & Tanks Replenished
ML20073B02419 April 1991Special Rept 91-002:on 910327,fire Door 218 Removed & Nonfunctional for More than Seven Days to Support Outage Activities Inside Room 226 in Auxiliary Bldg.Fire Door Will Be Replaced & Declared Functional by 910417Fire Barrier
ML20073B03219 April 1991Special Rept 91-003:on 910331,containment Equipment Hatch Open for More than Seven Days to Support 10th Refueling Outage Activities.Hatch to Be Closed on Approx 910420Fire Barrier
Continuous fire watch
ML20072S4398 April 1991Special Rept 91-001:on 910304,fire Damper Declared Inoperable Due to Failure to Close W/Max Air Flow.Damper Determined to Require Mod or Replacement.Mod Expected to Be Complete by 910517
ML20072Q61920 December 1990Special Rept 90-012:on 901118,Tech Spec 3.7.11.4 Violated. Caused by Hose Station Isolation Valves N2T43V001 Through V007 Being Isolated from Svc Water Supply to Support Work on Containment Cooler 2D.Valves Returned to Svc
ML20072Q63520 December 1990Special Rept 90-011:on 901117,during Refueling Outage,Fire Detection Instrumentation Disabled to Allow Welding in Room. Instrumentation Not Restored to Operable Status within 14 Days,Per Tech Spec 3.3.3.9
ML20072Q64520 December 1990Special Rept 90-010:on 901128,containment Equipment Hatch Open for More than Seven Days During Refueling Outage.Hatch Closed on 901201,per Tech Spec 3.7.12Fire Barrier
Fire Watch
Hourly Fire Watch
ML20062H18926 November 1990Special Rept 90-009:on 901109,fire Barrier Penetration Open for More than 7 Days to Support Outage Activities.Equipment Hatch Closed on 901113Fire Barrier
Continuous fire watch
Hourly Fire Watch
ML20062H18826 November 1990Special Rept 90-008:on 901102,fire Barrier Penetration Nonfunctional for More than 7 Days.Door Removed on 901025 to Support Outage Activities in Auxiliary Bldg.Door Will Be Replaced on 901212.Tech Spec Action Requirements in ForceFire Barrier
ML20063Q06914 August 1990Revised Special Rept 90-006:on 900615,Radiation Monitor R-60C Declared Inoperable Due to Erroneous Indication.Rept Corrects 900702 Submittal Incorrectly Referenced as R-60A as Being Inoperable.Tech Spec Action Statement Met
ML20056A18327 July 1990Special Rept 90-007:on 900713,radiation Monitor Inoperable for More than 7 Days,Per Tech Spec 3.3.3.1 Requirements. Caused by Erroneous Indication.Monitor Scheduled to Be Repaired During Next Outage of Sufficient Duration
ML20055D4902 July 1990Special Rept 90-006:on 900615,radiation Monitor Declared Inoperable Due to Erroneous Indication.Monitor Scheduled to Be Repaired During Next Outage of Sufficient Duration,In Order to Comply W/Tech Spec 3.3.3.1 Requirement
ML20247E72920 July 1989Special Rept 89-002:on 890615,fire Damper Declared Inoperable.Caused by Damper Not Meeting Acceptance Criterion of Closing W/Air Flow in Sys.Design Change Initiated to Determine If Damper Will Be Modified or Replaced
ML20247B02918 July 1989Special Rept 89-001:on 890605,fire Detection Instrumentation Sys Disabled in Order to Support Mods to Access Control Area.Due to Nature of Work,Sys Could Not Be Returned to Svc within 14 Days,Per Tech Spec 3.3.3.9
ML20212N8976 August 1986Ro:On 860804,enforcement Discretion (ED) Granted to Enable Startup W/Train a post-accident Hydrogen Analyzer Inoperable.Ed Based on Not Exceeding 30-day Limiting Condition for Operation & Having Alternate CapabilityEnforcement Discretion
ML20080A83330 January 1984Ro:On 840112 & 14,plant Vent Stack Effluent Monitors R-29B,declared Inoperable When Four of Nine Detectors Failed.Failed Detectors Replaced
ML20083G82827 December 1983Ro:On 831224,fire Protection Tank a & B Levels Fell to Approx 232,000 Gallons Each Due to Extreme Cold,Causing Cooling Tower 1C Fire Protection Sys to Fail.On 831226,tank Levels Found Below Min Due to Personnel Error
ML20082P16329 November 1983Ro:On 831114,radiation Monitor R-60B for Main Steam Relief & Atmospheric Steam Dump Discharge Declared Inoperable Due to Erratic Indication.Possibly Caused by Detector or Connector Problem.Monitor Will Be Repaired
ML20082C78214 November 1983Ro:On 831015,instrument Air to Piping Penetration Room & Containment Inadvertently Isolated,Causing Letdown Line to Isolate & Charging Line to Open Fully.Caused by Improper Valve Assembly.Valve Repaired
ML20080M05219 September 1983Ro:On 830917,while Attempting to Isolate Steam to Turbine Bldg,Three MSIVs Failed to Close Under no-flow Conditions. Clapper Found Detached from Valve Arm.Investigation Continuing
ML20069K67420 April 1983Ro:On 830406,radiation Monitor R29B Declared Inoperable Due to Erroneous High Indications on Low Range Noble Gas Channel.Caused by Failure of Low Range Noble Gas Detector. Detector Replaced & Channel Calibr
ML20083Q61516 February 1983Ro:On 830215,both Trains of Control Room Filtration Unit & a Train Penetration Room Filtration Sys Failed to Meet Tech Spec Criteria for Carbon Efficiency.Caused by Misinterpretation of Reg Guide 1.52
ML20054G34510 June 1982Ro:On 820609,certain a & B Train Svc Water Cooling Valves Associated W/Charging Pump 2B Mislabeled.Valves Correctly Relabeled Upon Discovery.Investigation Underway
ML20136C36222 June 1979Confirms 790622 Telcon Re Util Notification by Westinghouse That High Energy Line Break Inside Containment Could Result in Heatup of Steam Generator Level Transmitter Ref Legs.Util Evaluating Corrective Actions
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