05000327/LER-2013-003, Regarding Limiting Conditions for Operation Exceeded for Emergency Core Cooling System
LR-N16-0003, License Amendment Request to Amend the Accident Monitoring Instrumentation Technical Specifications
LR-N16-0044, Emergency License Amendment Request to Modify Technical Specification Requirements for One Inoperable Subcooling Margin Monitor Channel
LR-N15-0187, Emergency License Amendment Request to Remove Pressurizer Power Operated Relief Valve (PORV) Position Indication Instrumentation from the Accident Monitoring Instrumentation Technical Specifications
LR-N14-0268, Special Report 272/2014-008, One Channel of Reactor Vessel Level Instrumentation System (RVLIS) Inoperable Greater than 30 Days
LR-N09-0267, Special Report 311/2009-001, One Channel of Reactor Vessel Level Instrumentation System (RVLIS) Inoperable Greater than 30 Days
LR-N07-0036, LCR S06-03 Supplement Request for Change to Technical Specifications Accident Monitoring Instrumentation and Source Check Definition
LR-N06-0358, Response to RAIs on LCR S06-03 Request for Change to Technical Specifications Accident Monitoring Instrumentation and Source Check Definition
LR-N05-0570, Revision to License Change Request S05-06: Request for Change to Technical Specifications Accident Monitoring Instrumentation,
LR-N05-0392, Request for Change to Technical Specifications Accident Monitoring Instrumentation
05000362/LER-1982-011, Forwards LER 82-011/03L-0.Detailed Event Analysis Submitted
05000369/LER-1982-069, Forwards LER 82-069/03L-0.Detailed Event Analysis Encl
05000395/LER-1983-030, Forwards LER 83-030/03L-0.Detailed Event Analysis Encl
05000395/LER-1983-022, Forwards LER 83-022/03L-0.Detailed Event Analysis Encl
05000395/LER-1983-020, Forwards LER 83-020/03L-0.Detailed Event Analysis Encl
05000395/LER-1983-017, Forwards LER 83-017/03L-0.Detailed Event Analysis Encl
ST-HL-AE-2588, Responds to NRC Re Violations Noted in Insp Rept 50-498/87-75.Corrective Actions:Toxic Gas Monitors Reprogrammed Such That Operators Will Not Be Required to Manipulate Sys to Perform Channel Checks
W3P86-2805, Forwards SALP Progress Rept,Including Summary Level Overview of 1986 Accomplishments in Each SALP Functional Area, Followed by More Detailed Discussion of Programs Initiated, Status & Achievements in Improving Plant Performance
B11736, Forwards Addl Responses to Questions Raised Re Proof & Review Tech Specs.Marked-up Tech Specs Encl
ST-HL-AE-4049, Application for Amends to Licenses NPF-76 & NPF-80,revising Interim & Final Tech Spec 3.3.3.7 Re Chemical Detection Sys. Requests Approval of Interim & Final Tech Spec by 920911 & 930219,respectively
B13999, Forwards Response to NRC 911114 Request for Addl Info to Support Review of 910318 Application for Amend to License DPR-65 Changing Tech Specs to Incorporate Changes to Fire Protection Program
ST-HL-AE-3842, Application for Amend to Licenses NPF-76 & NPF-80,revising Tech Spec 3.3.3.7 Re Chemical Detection Sys
ST-HL-AE-5000, Application for Amends to Licenses NPF-76 & NPF-80, Relocating TS 3.3.3.7 & 3.8.4.1 to Technical Requirements Manual
LR-N23-0079, Special Report 23-02-00 Pursuant to the Requirements of Salem Unit 1 Technical Specification 3.3.3.7, Action 10, for the Unit 1 Main Steam Line Rad Monitor Inoperable for Greater than Seven Days
05000369/LER-1981-045-03, /03L-0:on 810409,various Portions of Fire Detection Sys Inoperable for Periods Over 1-hr from 810409- 0501.Caused by Area Const.Fire Watches & Patrols Established as Required
W3F1-2021-0004, License Amendment Request to Relocate Chemical Detection Systems Technical Specifications to the Technical Requirements Manual
W3P88-0963, Application for Amend to License NPF-38,consisting of Tech Spec License Amend NPF-38-88,deleting Ammonia Detection Sys from Chemical Detection Sys & Tech Spec for Ammonia Detection Sys.Fee Paid
05000327/LER-1989-020-01, :on 890705,observed That Reactor Vessel Level Indicating Sys upper-range Indicator Was Indicating High as Compared to Redundant Channel.Caused by Inadequate Channel Checks Due to Inadequate Procedure
05000482/LER-1989-017, :on 890830,control Room Ventilation Isolation Signal Initiated When Chlorine Monitor Indicated High Level. Caused by Spurious Spike.Recorder Connected to Chlorine Monitor GK-AITS-3 to Monitor Channel Behavior
05000499/LER-1989-007-01, :on 890322,discovered That Interconnecting Wire Which Bypassed High Chemical Level ESFs Actuation of Control Room HVAC Sys.Caused by Personnel Error.Wire Removed & Maint Work Control Procedures Revised
05000498/LER-1989-012-01, :on 890506,operation of Control Room Ventilation Sys in Violation of Tech Specs.Caused by Operator Error.Personnel Counseled & Training Initiated.W/
05000395/LER-1987-018, :on 870729,integrated Fire & Security (If&S) Sys Failed Due to Severe Electrical Storms.On 870730, Identified Failure to Monitor Containment Temp.Caused by Personnel Error.Shifts to Be Briefed
05000334/LER-1987-015, :on 870703 & 09,three Chlorine Detector Probes Tested & Failed to Meet Response Time Criteria.Caused by Improper Application of Vendor Test Procedures.Probes Recalibr & Procedure Revised
05000327/LER-1984-025-01, :on 840415,sampling of RCS for Boron Concentration Initiated,Causing Pressurizer Level Transmitter 1-LT-68-320 to Be Inoperable.Caused by Operator Error.Transmitter Moved
05000395/LER-1986-017, :on 861101,smoke Detectors Declared Inoperable. Hourly Fire Watch Established.On 861103,inoperable Fire Barrier Discovered.Caused by Personnel Error & Inadequate Review.Event Discussed at Weekly Staff Meeting
05000483/LER-1986-003, :an 860224,firewatch Requirements Not Met When Grinding Caused Smoke & Dust to Set Off Alarm.Caused by Need to Obtain Keys from Key Room & Slow Response Time.Keys Now Provided on Firewatch Key Rings
05000361/LER-1986-022, :on 860812,reactor Trip Occurred When RCS Pressure Reached Core Protection Calculator Auxiliary Trip Setpoint of 2375 Psia.Rcs Pressure Transient Resulted from MSIV Closure.Muffler Studs Will Be Replaced
05000528/LER-1986-057, :on 861214,personnel Failed to Perform Fire Patrol on Schedule.Caused by Failure of Foreman to Assign Area to Fire Patrol.Personnel Received Disciplinary Action
05000454/LER-1986-016-03, :on 860527,following Installation of Backup Electrical Power Supply,Continuous Fire Watch Inadvertently Released from Post.Caused by Personnel Error.Engineer Instructed on Fire Watch Procedures
05000456/LER-1987-020, :on 870312,fire Zone Detection & Suppression Annunciator Capability Failed.Caused by Failure of Bearing in Power Supply Cooling Fan.Fire Watches Established & Panel Power Supply & Cooling Fan Repaired
05000338/LER-1986-012-01, :on 860527,fire Detection Equipment for Svc Water & Fuel Oil Pumphouses Removed from Svc to Accommodate Cable Pull Associated W/Svc Water Mods & Not Returned to Svc by 860610.Hourly Fire Watch Implemented
05000213/LER-1997-019, :on 970808,compensatory Sampling Frequency Exceeded W/Rms Determined Inoperable.Caused by Personnel Error Due to Incorrect Interpretation of Ts.Compensatory Sampling to Be Conducted in Time Frame Required
05000482/LER-1986-023, :on 860419,control Room Intake Chlorine Monitors Left in Bypass Over 1 H W/O Initiation of Control Room Emergency Ventilation Sys in Recirculation Mode.Caused by Personnel Error
05000395/LER-1988-010-08, :on 880830,failure to Perform Fire Watch Following Fire Sys Computer Malfunction Induced by Lightning Striking Meteorological Tower.Caused by Inadequate Training & Procedural Guidance.Event Reviewed
05000395/LER-1988-005, :on 880426,fire Watch Not Established for Relay Room After Isolation of CO2 Sys,Per Tech Spec 3.7.9.3.a. Caused by Inadequate Review of Paperwork Due to Personnel Error.Involved Personnel to Review Incident
05000498/LER-1987-022, :on 871206,control Room Toxic Gas Monitors Inoperable.Caused by Inadequate Training Program for Toxic Gas Monitoring Sys Operation & Channel Checks.Monitor Operation Training & Logging Procedure Planned
05000395/LER-1987-031, :on 871229,detailed Review of Fire Watch Patrol Log Revealed That Four Rooms Not Listed.Caused by Inadequate Fire Svc Sys Operating Procedure SOP-509.Roving Patrols Established,Log Revised & Procedure Reviewed
05000213/LER-1997-006, :on 970227,liquid Effluent Radiation Monitor Was Determined Inoperable Due to Low Sensitivity.Revised ODCM Methodology for Calculating Monitor Setpoint
05000382/LER-1996-014-01, :on 961023,discrepancy Identified Between Existing as-built Plant Configuration & Licensing Basis Documents Re Broad Range Gas Monitors.Caused by Inadequate Design Review.Monitor Declared Inoperable
05000483/LER-1985-032, :on 850715,alarm in Fire Detection Zone 308 Activated by Cooking in Control Room Pantry But Not Reset. Remaining Zone 308 Fire Detectors Inoperable.Alarm Reset.Mod Request Initiated
05000423/LER-1996-051-01, :on 961221,TS Requirements for Application of 25% Surveillance Interval Extension of SR 4.0.2 to LCO Action Statements Misinterpreted.Caused by Incorrect Application of TS 4.0.2.Practice Discontinued
05000498/LER-1992-020, :on 921209,discovered That Toxic Gas Monitor XE-9326 Channel Was Not in Tripped Condition Required by TS 3.3.3.7.Caused by Less That Adequate Design of Toxic Gas Monitoring Sys.Caution Tag Initiated
05000318/LER-1996-003-01, :on 960619,discovered Missed Fire Protection Compensatory Action.Caused by Personnel Error.Provided Awareness Training to Personnel Re Fire Protection Compensatory Actions Expectations
05000317/LER-1996-002, :on 960410,required Fire Watch Missed.Caused by Lack of Fire Watch Ownership.Circumstances of Event Will Be Reviewed W/Appropriate Groups
05000382/LER-1992-009-01, :on 920827,broad-range Gas Detection Sys Channel Calibrs Not Performed within TS 4.3.3.7.3 Required Periodicity.Caused by Inadequate Administrative Control. Channel Calibrs Successfully Performed
05000339/LER-1984-006-02, :on 840608,fire Detection Sys for Emergency Switchgear Room Removed from Svc to Add Smoke Detectors. Sys Returned to Svc on 840628,resulting in Sys Remaining Out of Svc Greater than 14 Days
05000454/LER-1985-018, :on 850204,fire Protection Detectors Discovered to Be Inconsistent W/Layout Prints & Tech Specs. Caused by Ae Error Due to Oversight.Fire Watch Established & Tech Specs Revised
05000361/LER-1984-001-01, :on 840111,preparation of Updated Fire Hazards Analysis Resulted in 91 Nonconformance Repts (NCR) Re Fire Protection Program Deficiencies.Compensatory Measures Established.Ncr Dispositions Planned
05000336/LER-1995-024, :on 950614,surveillance Frequency for Fire Detection Instrumentation Was Incorrect Due to Personnel Error.Revised Applicable Surveillance Procedure That Changed Frequency to Required semi-annual Interval
05000389/LER-1983-076-03, /03L-0:on 831202,while at 100% Power,Fire Detection Sys Failed for 3 H.Caused by Defective Transceiver Card.Honeywell Card Replaced
05000327/LER-1984-025, :on 840415,sampling of RCS for Boron Concentration Caused Pressurizer Level Transmitter 1-LT-68-320 to Become Inoperable Due to Mod Made During Last Outage Routing Sense Line from Low Side Top
05000334/LER-1983-013-03, /03L-0:on 830505,during Normal Operation,Chlorine Detector B Wick Observed Dry While Electrolyte Reservoir Indicated Full.Caused by Binding Level Indicator. Indicator Freed
05000336/LER-1995-017, :on 950503,contract Individual Assigned as Continous Fire Watch Found Sleeping in West 480 Volt Switch Gear Room.Caused by Personnel Error.Individual Replaced & Chairs Removed from Location
05000336/LER-1995-014, :on 950404,continuous Fire Watch Was Found Sleeping in West 480 Volt Switchgear Room Due to Personnel Error.Posted Another Individual as Fire Watch
05000361/LER-1983-093-03, /03L-0:review of Records Showed That Annual Surveillance Test S023-3-3.36.1 for 10 Fire Suppression Valves Due 830209 Not Completed.Caused by Valves Having Been Removed from Svc.Surveillance Completed on 831005
05000361/LER-1983-136-03, /03L-0:on 831021,ground Fault Alarm Received on Data Gathering Panel for Fire Zones 44 & 83.Panel Declared Inoperable & Compensatory Fire Watches Established.Cause Unknown.Fault Cleared.Sys Returned to Svc
05000361/LER-1983-150-03, /03L-0:on 831117,power Supply Overload Protection Circuit in Fire Detection Data Gathering Panel 31-198-2 Declared Inoperable.Cause Undetermined.Circuit Reset, Returning Panel to Svc
05000369/LER-1983-099-03, /03L-0:on 831006,invalid Fire Alarm for Fire Detection Zone Efa 77 Received in Control Room.Caused by Unidentified Waterspill Around Ceiling Hatch Plug Accumulating Around Detector & Base
05000370/LER-1983-066-03, /03L-0:on 831019,invalid Fire Alarm for Fire Detection Zone Efa 173 Would Not Reset at Control Room Data Gathering Panel.Caused by Component Malfunction Due to Dirt Accumulation.Detector Replaced
05000370/LER-1983-067-03, /03L-0:on 831023,trouble Alarm for Fire Detection Zone 165 Received in Control Room & Would Not Reset.Caused by Component Malfunction.Loose Detector Reinstalled & Missing Screw Replaced
05000395/LER-1983-109-03, /03L-0:on 830918,integrated Fire & Security Computer Failed,Causing Loss of Alarms from Fire Detection Instrumentation & Loss of Computer Controlled Access Vital Area Doors & Card Readers.Cause Not Stated
05000395/LER-1983-120-03, /03L-0:on 831014,alarm Received in Control Room Associated W/Smoke Detectors in Zone Jjj.Caused by Bad Smoke Detector Head.Unit Replaced,Surveillance Test Performed & Zone Declared Operable on 831014
05000395/LER-1983-117-03, /03L-0:on 831010,smoke Detectors in Zone Pp Declared Inoperable & Riac Panel 12 Locked Into Alarm & Would Not Reset.Caused by Steam Leaks in Area of Detectors. Valves Verified Tripped & Leaks Repaired
05000361/LER-1983-112-01, /01T-0:on 830826,w/Units 2 & 3 in Modes 1 & 3, respectively,41 Heat Detectors in Zone 12 Identified, Constituting Less than Required Number.Cause Not Determined. Addl Detector Will Be Installed
05000362/LER-1984-001, :on 840101,precautionary Penetration & Radwaste Bldgs Evacuation Initiated When Units 2 & 3 Area Radiation Monitors & Plant Vent Stack Monitors Alarmed.Caused by Routine Draining of Waste Gas Header Line
05000315/LER-1983-124-03, /03L-0:on 831217,fire Detection Sys Alarm for Zone 14 in Auxiliary Bldg Received in Control Room.Cause Unknown.New Detector,Mfg by Pyratronic,Installed
05000318/LER-1983-033-03, Fire Detection Instrumentation in Containment Southeast Electrical Penetration Area Determined Inoperable.Caused by Pinched Protecto Wire.Wire Repaired
05000315/LER-1983-076-03, /03L-0:on 830807,during Refueling Shutdown,Fire Detection Sys Alarm for Zone 3 in Auxiliary Bldg Received in Control Room.Caused by Faulty Detector Setpoint.New Detector Installed
05000327/LER-1983-092-03, /03L-0:on 830708 & 11,process Computer P-250 Failed,Causing Subcooling Margin Monitor to Be Inoperable. Caused by Blown Fuse in Programmer Console & Interrupt from Solid State Protection Sys
05000395/LER-1983-071-03, /03L-0:on 830626,auxiliary Bldg Smoke Detector Zone Hh Discovered in Alarm & Inoperable Since 830624.Caused by Personnel Failing to Reset Zone Following Welding Activity.Zone Reset
05000328/LER-1983-095-03, /03L-0:on 830708 & 13,plant Process Computer Failed,Rendering Subcooling Margin Monitor Inoperable.Caused by Power Glitch & Memory Module Loose Connection & Dirty Edge Connector.Module Repaired
05000361/LER-1983-082-03, /03L-0:on 830718,supervisory Trouble Alarm Sounded Involving Fire Detection Panel 2/3L-236.Caused by Inadvertent Circuit Interruption by Contract Electrician. Circuit Repaired
05000327/LER-1983-057-03, /03L-0:on 830426,subcooling Margin Monitor Declared Inoperable Due to Plant Process Computer Failure. Caused by Power Failure.Computer Supplied by Maint Power While Inverter Repaired
05000328/LER-1983-061-03, /03L-0:on 830429,steam Generator 2 Pressure Indicator Failed Low & Declared Inoperable.Caused by Failed Foxboro Model current-to-current Module Due to Faulty Transistors.Transistors Replaced
05000346/LER-1983-013-03, /03L-0:on 830304,chlorine Detector AE5358B Tripped Causing Shutdown of Control Room Normal Ventilation Sys. Caused by Component Failure.Orifice Cleaned & Wick Replaced
05000395/LER-1983-088-03, /03L-0:on 830728,during Surveillance Testing, Smoke Detector IXA-4947X Damaged & Declared Inoperable. Caused by Damage to Sensor When Removed for Testing.Damaged Unit Replaced & Tested Satisfactorily
05000328/LER-1983-034-03, /03L-0:on 830223,subcooling Margin Monitor Declared Inoperable Due to Loss of Plant Computer.Caused by Power Interruption.Computer Presently Operated from Maint Power.Power Restored & Computer Restarted
05000370/LER-1983-024-03, /03L-0:on 830526-0610,Fire Detection Zones Efa 179,189,182,81,102,174 & 163 Declared Inoperable Due to Invalid Alarms.Caused by Dirt Accumulation in Firemark 9620 Smoke Detectors
05000395/LER-1983-020-03, /03L-0:on 830305,fire Detector Sys Control Room Alarm Capability Lost for Intermediate Bldg Zones Aa,Bb & CC & for Diesel Generator Bldg Zones DG (427) & DG (436).Caused by Blown Fuse.Fuse Replaced
05000395/LER-1983-079-03, /03L-0:on 830711,smoke Detector IXA-4962F,boric Acid Tank Room,Removed During Surveillance Testing.Caused by Detector Head Not Properly Mounted in Base.Detector Head Properly Mounted
05000328/LER-1983-074-03, /03L-0:on 830517,due to Failure of Plant Process Computer,Rcs Subcooling Margin Monitor Declared Inoperable. Caused by Power Interruption.Computer Restarted & Monitor Returned to Svc
05000370/LER-1983-013-03, /03L-0:on 830430,fire Detection Zones 87,88 & 100 Declared Inoperable Due to Constant Invalid Alarms.Fire Watches & Containment Temp Monitoring Established.Caused by Dirt Accumulation in Smoke Detectors
05000328/LER-1983-069-03, /03L-0:on 830508,RCS Subcooling Margin Monitor Declared Inoperable Due to Loss of Plant Process Computer. Caused by Breaker Operation on Power Grid Sys.Computer Restarted & Monitor Returned to Svc
05000395/LER-1983-042-01, /01T-0:on 830519,steam Leak Activated Smoke Detector,Tripping Open Intermediate Bldg Preaction Sprinkler Sys Deluge Valve.Caused by Personnel Error & Lack of Sys Knowledge.Deluge Valve Reset
05000361/LER-1991-004-01, :on 910227,fire Watches Not Established within One Hour Contrary to Tech Spec.Caused by Work Process Associated W/Establishment of Fire Watches.Event Discussed W/Eso & Operations Personnel
05000327/LER-1983-045-03, /03L-0:on 830401,06 & 10,steam Generator 1 wide- Range Level Channel Declared Inoperable After Failing Low. Caused by Faulty Recorder 1-LR-3-43,probably Due to Defective Switches in Connector.Recorder Replaced
05000272/LER-1990-035-01, :on 901005,discovered That Position Indication Surveillance for Pressurizer PORVs & Block Valves Not Performed,Per Tech Spec Table 4.3-11
05000317/LER-1990-024, :on 900803,discovered That Surveillance Test Procedure Not Performed on Smoke Detection Sys.Caused by Inadequate Controls.Review of Administrative & Procedural Controls Being Conducted
B14532, Application for Amends to Licenses DPR-61,DPR-21,DPR-65 & DPR-49,revising TS to Change Submittal Frequency of Radioactive Effluent Release Rept from Semiannual to Annual
05000423/LER-1990-022, :on 900618,discovered That Hourly Fire Watch Patrol Had Not Been Established in Battery 4 Inverter Room. Caused by Procedural Deficiency.Hourly Fire Watch Established.Procedures Revised
05000320/LER-1982-022-03, /03L-0:on 820612,air Intake Tunnel Chlorine Monitor Failed.Caused by Failed Optical Transistor in Monitor.Transistor Replaced & Monitor Returned to Svc
B14540, Application for Amend to License DPR-61,revising TS Tables 3.3-9 & 4.3-7 by Deleting Obsolete Footnote & Adding Footnote to Clarify When SG Blowdown Radioactivity Monitors Required to Be Operable
05000498/LER-1993-014, :on 900511,12,14,22 & 23,CR Envelope HVAC Sys Not Operated in Correct Mode.Caused by Increased Administrative Burden & Inadequate Tracking of Lcos. Temporary Labels Placed on Main Control Board
05000395/LER-1983-072-03, /03L-0:on 830701,smoke Detector SMK-CB-3,Zone W-W, Would Not Reset at Integrated Fire & Security Panel.Caused by Failure to Teletype Printed Control Board in Cathode Ray Tube Circuitry.Component Replaced
05000328/LER-1983-085-03, /03L-0:on 830614,RCS Subcooling Margin Monitor Declared Inoperable Due to Loss of Plant Process Computer on Two Occasions.Caused by Loss of Power During Start Bus Transfer & Blown Fuse,Respectively
05000395/LER-1983-058-03, /03L-0:on 830607,smoke Detector IXA-4993G Failed to Respond to Simulated Alarm.Caused by Broken Base Assembly in Detector Due to Open Circuit Preventing Alarm Condition. Component Replaced
05000395/LER-1983-032, Forwards LER 83-032/03L-0.Detailed Event Analysis Encl
05000317/LER-1990-007, :on 900216,discovered That Supervised Circuits Associated W/Fire Detection Instruments Located in Reactor Coolant Pump Bays Not Been Included in Surveillance Test Procedure.Caused by Personnel Error
05000334/LER-1981-073-03, /03L-0:on 810731,surveillance Test on Chlorine Detectors Indicated No Drip Rate on CLA-VS-101A.Caused by Clogged Orifice
05000369/LER-1981-097-03, /03L-0:on 810612,in Mode 5,routine Surveillance Discovered That Quantity of Fire Detection Equipment Installed in Five Fire Zones Did Not Comply W/Tech Specs. Caused by Typographical Error & Incorrect Blueprints
05000369/LER-1981-082-03, /03L-0:on 810504-22,fire Detection Sys Found Inoperable.Caused by Const in Area.Fire Watches & Patrols Established
05000311/LER-1981-039, Forwards LER 81-039/03L-0.Detailed Event Analysis Encl
ST-HL-AE-3388, Provides Addl Info Re Proposed Amend to Tech Spec 3.3.3.7, Clarifying Conflicting Actions Statements for Chemical Detection Sys,Control Room Intake Air radioactivity-high & Control Room Makeup & Cleanup Filtration Sys
ST-HL-AE-4392, Responds to Violations Noted in Insp Repts 50-498/92-36 & 50-499/92-36.Corrective Actions:Corrective Maint Completed on power-range Neutron Flux Instrument NI-44 & Reload Initial Startup Testing Procedure Will Be Revised
05000369/LER-1981-032-03, /03L-0:during 810310-30,portions of Fire Detection Sys Were Inoperable for Periods Exceeding One Hour.Caused by Const in Area.Fire Watches & Patrols Were Established as Required
05000334/LER-1981-011-03, /03L-0:on 810121,electrolyte Detectors 101A & B Found Not Dripping & 101C Detector Had Slow Drip Rate.Cause Under Investigation.Detectors Adjusted,Repaired & Declared Operable on 810129
05000327/LER-1981-004-03, /03L-0:on 810112,RWST Instrument Channel L-63-54 Failed.Caused by Sense Lines Freezing Due to Insufficient Insulation Around Lines & on Sides of Cabinet Housing Level Transmitter.Heaters in Use Until Insulation Can Be Added
05000334/LER-1981-012-03, /03L-0:on 810203,all Three Chlorine Detectors Failed Drip Rate Criteria.Cause Under Investigation. Detectors Repaired & Declared Operable 810204
05000334/LER-1980-115-03, /03L-0:on 801230,101A,101B & 101C Detectors Electrolyte Discovered Not Dripping.Caused by Clogged Wicks & Glass Orifices.Wicks Replaced & Orifices Cleaned. Engineering Requested to Evaluate Sys
05000334/LER-1980-107-03, /03L-0:on 801206,electrolyte for Detectors 101A & 101B Found Not Dripping.Caused by Clogged Wick & Glass Orifice.Wick & Orifice Cleaned & Top Vent Filter Loosened
05000334/LER-1981-052-03, /03L-0:on 810513,min Drip Rate Required for Chlorine Detectors Could Not Be Met During Surveillance Test.Probably Caused by Improper Venting of Electrolyte Reservoir & Clogged Orifice.Design Changes Initiated
05000346/LER-1981-013-03, /03L-0:on 810218,control Room Normal Ventilation Dampers Tripped Shut Resulting in No Power Available to Chlorine Detector 1 Above Control Room or in Block House. Caused by Failure of 10 Amp Fuse of Circuit Y111
05000327/LER-1980-202-03, /03L-0:on 801225,steamline Pressure & Flow Channel S/G-3 Train a Failed High & S/G-1,2 & 4 Train B Failed Low. Caused by Freezing of Unprotected Sense Lines.Lines Thawed. Design Changes Initiated
05000334/LER-1980-101-03, /03L-0:on 801126,control Room Chlorine Detector CLA-VS-101A Failed to Meet Operating Surveillance Requirement for Drip Rate.Caused by Clogged Detector Wick & Tank Vent Failure.Vent Filter Replaced & Wick Cleaned
05000346/LER-1981-018-03, /03L-0:on 810322 & 0401,chlorine Detector Ae 5358B Tripped.First Trip Probably Caused by Fouled Detector. Detector Cleaned.Detector & Circuit Board Replaced After Second Failure
05000311/LER-1989-015-02, :on 890918,discovered That Channel Calibr for Containment Wide Range Pressure post-accident Channels Not Done within Required Time Frame.Caused by Weak Tech Spec Amend Implementation in 1987.Process Upgraded
05000346/LER-1977-108-03, /03L-0:on 771208,during Surveillance Test,Chlorine Detector AE-4863A at Chlorine Tank Car Failed to Reset Following Trip.Caused by Personnel Error.Felt Wick,Electrode & Electrolyte Replaced & Circuit Board Cleaned
05000311/LER-1998-001-01, :on 970705,failed to Meet TS 3.3.3.7 Table 3.3-11 Item 19 -RVLIS.Caused by Test Equipment Had Not Been Evaluated for Effect on Sys Operability.Installation of Isolators Has Been Included in Rev 5
05000272/LER-1994-015-01, :on 941018,refueling Water Storage Tank Water Vol Level Less than Required.Transmitters Properly Adjusted & RWST Level Was Returned to within Specification
05000311/LER-1993-012-01, :on 931030,TS 3.0.3 Entered Due to Inoperability of 21 Bast Level Indication While 22 Bast Out of Svc.Caused by Design Deficiency.Design Change Installed
05000272/LER-1993-015, :on 930913 & 16,BAST 12 Level Indicator Declared Inoperable Due to False Level Indications.Caused by Design of Bast Level Indication Sys.Design Change to Reduce Boron Concentration Will Be Implemented
05000272/LER-1992-023, :on 921102,12 Bast Level Indication Failed High off-scale in Violation to TS 3.0.3.Caused by Design, Manufacturing,Construction/Installation.Design Change in Progress to Replace Bubbler Sys
L-91-142, Application for Amends to Licenses DPR-31 & DPR-41,revising Tech Specs to Remove Outdated Matl,Incorporate Administrative Clarifications & Correct Typos for Consistency w/NUREG-0452 Re STS for Westinghouse PWRs
05000315/LER-1993-003, :on 930702,noted That Fire Detection Monitor Alarm Switch Placed & Left in Off Position.Caused by Personnel Error.C/As Included Discussions of Event W/ Personnel Involved Re Attention to Detail
05000315/LER-1993-001-01, :on 930330,discovered That Fuel Handling Exhaust Fan Charcoal Filter Bed Fire Alarm Inoperable.Caused by Weakness in Design Change Work Planning.Mgt Will Review All Work for Potential TS Impact
05000315/LER-1990-003, :on 900410,pyralarm Fire Detection Zone Rendered Inoperable When Detection Control Panel Permeated by Steam & Water from Blowdown Sys Safety Valve.Caused by Personnel Error.Roving Fire Watch Posted
05000315/LER-1990-001-01, :on 900225,pyralarm Fire Detection Zone for Elevation of Auxiliary Bldg Declared Inoperable.Caused by Personnel Error.Fire Watch Dispatch Notified & Continuous Fire Watch Posted
05000315/LER-1989-015-01, :on 891128,pyralarm Fire Detection Zone 3 Made Inoperable When Welding in Laundry Room Caused Standing Alarm.Fire Watch Patrol Not Assigned within 1 H.Caused by Personnel Error.Event Reviewed W/Operators
05000335/LER-1980-065-03, /03L-0:on 801121,containment Fire Protection Zone 14A Went Into Invalid Alarm State.Caused by One Detector Shorting Out Due to Condensation.Detector Removed
05000335/LER-1991-004-01, :on 910516,late Fire Watch Patrol of Shield Bldg Discovered.Caused by Personnel Error.Shield Bldg Exhaust Fan Secured to Allow Access to Annulus & Fire Watch Entered Annulus & Performed Patrol
05000272/LER-2013-002, Special Report LER 13-002-00, Pursuant to the Requirements of Technical Specification (TS) 3.3.3.7, Action 10, for Main Steam Line Radiation Monitors (R46s) Inoperable for 7 Days
05000272/LER-1993-003, :on 930123 & 27,both Basts Declared Inoperable Due to Respective False High Level Indication.Cause by Bubbler Tube Blockage.Number 11 Bast Level Indicator Bubbler Tube Blown Down to Remove Blockage
05000311/LER-1993-003-01, :on 930131,level Indicator of 21 Bast Declared Inoperable Due to False High Level Indications.Caused by Design Construction/Installation.Design Change Will Be Developed to Reduce Bast Boron Concentration
05000382/LER-2019-006, (Waterford 3), Unplanned Loss of Both Trains of Broad Range Gas Monitors Results in a Condition That Could Have Prevented Fulfillment of a Safety Function
05000382/LER-2020-001, (Waterford 3), Violation of Technical Specification 3.3.3.7.3.a (Broad Range Gas Detection) Due to Operators and Maintenance Technicians Not Performing Procedure Step as Intended
B13269, Proposed Tech Specs Sections 2.0 & 3/4.3 Re Safety Limits & Limiting Safety Sys Settings & Instrumentation
W3F1-2021-0060, Response to Request for Additional Information Regarding License Amendment Request to Relocate Chemical Detection Systems Technical Specifications to Technical Requirements Manual
W3F1-2021-0061, Supplement to License Amendment Request to Relocate Chemical Detection Systems Technical Specifications to Technical Requirements Manual
05000213/LER-1998-003, :on 980505,compensatory Sampling Frequency Exceeded Time Limit W/Sw Effluent RM Inoperable.Caused by Personnel Error.Individual Was Counseled & Technicians Were Reminded of Sampling within Required Frequency
05000336/LER-1987-001, :on 861222,intermittent Fire Alarms Received from Heat Detectors Above Reactor Coolant Pump 5.Caused by Heat Detector Failure.Faulty Detector Will Be Replaced.W/
05000369/LER-1981-131-03, /03L-0:on 810805,determined That Nonsupervised Fire Protection Sys Channels Were Not Receiving Surveillance Per Tech Spec 3.3.3.7.Caused by Procedural Deficiency.Hourly Surveillance of Subsystem B Alarm Panels Initiated
05000327/LER-1983-116-03, /03L-0:on 830924,computer P-250 Failed,Rendering Reactor Coolant Subcooling Margin Monitor Inoperable.Caused by Power Spike to Disc Due to Bus Transfers Made in 500-kW Switchgear.Computer Restarted
05000498/LER-1994-016, :on 940923,failure to Fully Meet Requirements of TS Due to Not Placing CR Envelope HVAC Sys in Required Mode.Toxic Gas Analyzers Repaired & Mod Implemented
05000362/LER-1983-036-03, Early Warning Fire Detectors in Zone 41 Found Inoperable During 6-month Fire Detection Channel Functional Test.Caused by Faulty Wiring Connection.Wiring Connection Repaired
05000362/LER-1983-038-03, /03L-0:on 830511,spray Sys Protecting Cable Tunnel Section 3 Declared Inoperable When Internals to Deluge Panel 3TSH8951 Found Corroded.Caused by Water Intrusion Due to Improper Closure of Panel