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Issue date | Title | Topic | |
---|---|---|---|
05000390/LER-2016-001 | 9 March 2016 | Channel Mode Switch in Incorrect Position Renders Lower Containment Atmosphere Particulate Radiation Monitor Inoperable LER 16-001-00 for Watts Bar, Unit 1, Regarding Channel Mode Switch in Incorrect Position Renders Lower Containment Atmosphere Particulate Radiation Monitor Inoperable | Safe Shutdown Grab sample |
05000390/LER-2016-003 | 10 May 2016 | Technical Specification Surveillance Requirement Not Met During Emergency Core Cooling System Venting LER 16-003-00 for Watts Bar, Unit 1, Regarding Technical Specification Surveillance Requirement Not Met During Emergency Core Cooling System Venting | Safe Shutdown Probabilistic Risk Assessment Temporary Modification Missed surveillance |
05000390/LER-2016-004 | 23 May 2016 | Automatic Reactor Trip Due to Actuation of Over Temperature Delta Temperature Bistables LER 16-004-00 for Watts Bar, Unit 1, Regarding Automatic Reactor Trip Due to Actuation of Over Temperature Delta Temperature Bistables | Safe Shutdown |
05000390/LER-2016-005 | 13 May 2016 | Both Trains of Unit 1 Emergency Gas Treatment System Inoperable During Unit 2 Testing LER 16-005-00 for Watts Bar, Unit 1, Regarding Both Trains of Unit 1, Emergency Gas Treatment System Inoperable During Unit 2, Testing | Safe Shutdown Stroke time Safe Shutdown Earthquake Past operability |
05000390/LER-2016-006 | 30 June 2016 | Undersized Room Cooler Fan Shaft Results in Loss of Centrifugal Charging Pump LER 16-006-00 for Watts Bar, Unit 1, Regarding Undersized Room Cooler Fan Shaft Results in Loss of Centrifugal Charging Pump | Safe Shutdown Mission time Past operability |
05000390/LER-2016-007 | 20 June 2016 | Technical Specification Action Not Met for Rod Position Indication LER 16-007-00 for Watts Bar Nuclear Plant, Unit 1 Regarding Technical Specification Action Not Met for Rod Position Indication | Safe Shutdown Rod Drop Event |
05000390/LER-2016-008 | 15 July 2016 | Emergency Diesel Generator Manual Start Due to Loss of Voltage on the 6.9kV Shutdown Board 1B-B LER 16-008-00 for Watts Bar, Unit 1, Regarding Emergency Diesel Generator Manual Start Due to Loss of Voltage on the 6.9kV Shutdown Board 1B-B | Safe Shutdown Open Phase Condition |
05000390/LER-2016-009 | 15 July 2016 | Failure to Complete Surveillance Requirements Causes a Condition Prohibited by the Technical Specifications LER 16-009-00 for Watts Bar, Unit 1, Regarding Failure to Complete Surveillance Requirements Causes Conditions Prohibited by the Technical Specifications | Missed surveillance |
05000390/LER-2016-010 | 8 August 2016 | Emergency Diesel Generator Crankcase Pressure Switches Not Analyzed to Withstand the Effects of a Tornado LER-16-010-00 for Watts Bar Nuclear Plant, Units 1 and 2 Regarding Emergency Diesel Generator Crankcase Pressure Switches Not Analyzed to Withstand the Effects of a Tornado | Safe Shutdown Unanalyzed Condition |
05000390/LER-2016-011 | 9 December 2016 | Loss of Centrifugal Charging Pump Due to Repeat Failure of Associated Room Cooler LER 16-011-01 for Watts Bar Nuclear Plant, Unit 1 Regarding Loss of Centrifugal Charging Pump Due to Repeat Failure of Associated Room Cooler | Safe Shutdown Mission time Past operability |
05000390/LER-2017-001 | 14 February 2017 | Failure of Emergency Raw Cooling Water Pump Reverse Rotation Keys Represents Potential Common Cause Inoperability Watts Bar, Units 1 and 2 - Cancellation of Licensee Event Report 390/2017-001 Related to Essential Raw Cooling Water Pump Reverse Rotation Keys Representing a Potential Common Cause lnoperability | Safe Shutdown |
05000390/LER-2017-002 | 22 February 2017 | Incorrectly Hung Clearance Leads to a Condition Prohibited by the Technical Specifications LER 17-002-00 for Watts Bar Nuclear Plant, Unit 1, Regarding: Incorrectly Hung Clearance Leads to a Condition Prohibited by the Technical Specifications | Safe Shutdown |
05000390/LER-2017-003 | 3 March 2017 | Inadequate Operability Determination Leads to a Condition Prohibited by the Technical Specifications LER 17-003-00 for Watts Bar, Unit 1, Regarding Inadequate Operability Determination Leads to a Condition Prohibited by the Technical Specifications | Safe Shutdown Safe Shutdown Earthquake Functionality Assessment Pressure boundary leak Through-Wall Leak |
05000390/LER-2017-004 | 31 August 2017 | Manual Reactor Trips Due to Failed Reactor Coolant Pump Power Transfer During Plant Startup LER 17-004-01 for Watts Bar, Unit 1, Regarding Manual Reactor Trips Due to Failed Reactor Coolant Pump Power Transfer During Plant Startup | Safe Shutdown Anticipated operational occurrence |
05000390/LER-2017-005 | 10 July 2017 | Isolation of the 1 B-B Safety Injection Pump Leads to Condition Prohibited by Technical Specifications LER 17-005-00 for Watts Bar re Isolation of the 1B-B Safety Injection Pump Leads to a Condition Prohibited by Technical Specifications | Safe Shutdown |
05000390/LER-2017-006 | 31 July 2017 | Structural Degradation of 161 kV Line Pole Leads to a Condition Prohibited by Technical Specifications LER 17-006-00 for Watts Bar, Unit 1, Regarding Structural Degradation of 161 kV Line Pole Leads to a Condition Prohibited by Technical Specifications | Safe Shutdown |
05000390/LER-2017-007 | 8 August 2017 | Multiple Unreported Potential Loss of Safety Function Events Associated with Inoperable Single Train Systems Due to Misinterpretation of Reporting Guidance LER 17-007-00 for Watts Bar, Unit 1, Regarding Multiple Unreported Potential Loss of Safety Function Events Associated with Inoperable Single Train Systems Due to Misinterpretation of Reporting Guidance | Safe Shutdown Rod Drop Event |
05000390/LER-2017-008 | 14 August 2017 | Shield Building Inoperability and Potential Loss of Safety Function Resulting from Spurious Equipment Operation LER 17-008-00 for Watts Bar, Unit 1, Regarding Shield Building Inoperability and Potential Loss of Safety Function Resulting from Spurious Equipment Operation | Safe Shutdown |
05000390/LER-2017-010 | 10 October 2017 | Actuation of Turbine Driven Auxiliary Feedwater Pump Due to Loss of 6.9kV Shutdown Board LER 17-010-00 for Watts Bar Nuclear Plant, Unit 1 Regarding Actuation of Turbine Driven Auxiliary Feedwater Pump Due to Loss of 6.9kV Shutdown Board | Safe Shutdown |
05000390/LER-2017-011 | 23 October 2017 | Failure to Enter Technical Specification 3.6.3 for Containment Isolation Valve LER 17-011-00 for Watts Bar, Unit 1, Regarding Failure to Enter Technical Specification 3.6.3 for Containment lsolation Valve | Safe Shutdown Time of Discovery |
05000390/LER-2017-012 | 23 October 2017 | Error in Plant Emergency Procedures Leads to a Condition Prohibited by the Technical Specifications LER 17-012-00 for Watts Bar, Unit 1, Regarding Error in Plant Emergency Procedures Leads to a Condition Prohibited by the Technical Specifications | Safe Shutdown Past operability Probabilistic Risk Assessment |
05000390/LER-2017-013 | 24 January 2018 | 1 OF 5 LER 17-013-01 for Watts Bar Nuclear Plant, Units 1 and 2 Regarding Incorrectly Adjusted Auxiliary Building Gas Treatment System Damper Leads to a Condition Prohibited by Technical Specifications | Safe Shutdown Safe Shutdown Earthquake Past operability Probabilistic Risk Assessment |
05000390/LER-2017-014 | 20 December 2017 | Main Control Room Boundary Door Left Open Leading to a Loss of Safety Function LER 17-014-00 for Watts Bar, Unit 1, Regarding Main Control Room Boundary Door Left Open Leading to a Loss of Safety Function | Safe Shutdown Probabilistic Risk Assessment |
05000390/LER-2017-015 | 8 January 2018 | Failure to Enter Limiting Condition of Operation Action Statement Results in a Condition Prohibited by Technical Specifications LER 17-015-00 for Watts Bar, Units 1 and 2, Regarding Failure to Enter Limiting Condition of Operation Action Statement Results in a Condition Prohibited by Technical Specifications | Safe Shutdown |
05000391/LER-2016-001 | 13 June 2016 | Loss of Automatic Containment Isolation for the Steam Generator Blowdown Sampling Lines LER 16-001-00 for Watts Bar, Unit 2, Regarding Loss of Automatic Containment Isolation for the Steam Generator Blowdown Sampling Lines | Safe Shutdown |
05000391/LER-2016-002 | 11 July 2016 | Turbine Driven Auxiliary Feedwater Pump Inoperable for Longer than Allowable Outage Time due to Turbine Speed Control Failure LER 16-002-00 for Watts Bar, Unit 2, Regarding Turbine Driven Auxiliary Feedwater Pump Inoperable for Longer Than Allowable Outage Time Due to Turbine Speed Control Failure | Safe Shutdown Past operability |
05000391/LER-2016-003 | 27 July 2016 | Turbine Driven Auxiliary Feedwater Pump Inoperable for Longer than Allowable Outage Time due to Governor Valve Spring Over-Tensioning LER 16-003-00 for Watts Bar, Unit 2, Regarding Turbine Driven Auxiliary Feedwater Pump lnoperable for Longer Than Allowable Outage Time Due to Governor Valve Spring Over-Tensioning | Safe Shutdown Past operability |
05000391/LER-2016-004 | 4 August 2016 | Reactor Trip and Safety Injection Actuation Caused by Turbine Governor Valve Failure LER 16-004-00 for Watts Bar, Unit 2, Regarding Reactor Trip and Safety Injection Actuation Caused by Turbine Governor Valve Failure | Safe Shutdown Flow Induced Vibration |
05000391/LER-2016-005 | 19 August 2016 | Main Feedwater Pump Trip on Loss of Condenser Vacuum Leads to Turbine Trip and Reactor Trip LER 16-005-00 for Watts Bar, Unit 2, Regarding Main Feedwater Pump Trip on Loss of Condenser Vacuum Leads to Turbine Trip and Reactor Trip | Safe Shutdown |
05000391/LER-2016-008 | 28 October 2016 | Reactor Trip Resulting from Failure of 2B Main Bank Transformer LER 16-008-00 for Watts Bar, Unit 2, Regarding Reactor Trip Resulting from Failure of 2B Main Bank Transformer | Safe Shutdown |
05000391/LER-2017-001 | 3 May 2017 | Containment Airlock Function Lost Due to Equalizing Valve Not Closing LER 17-001-00 for Watts Bar, Unit 2, Regarding Containment Airlock Function Lost Due to Equalizing Valve Not Closing | Safe Shutdown |
05000391/LER-2017-002 | 12 May 2017 | Manual Reactor Trip as a Result of a Secondary Plant Transient LER 17-002-00 for Watts Bar, Unit 2, Regarding Manual Reactor Trip as a Result of a Secondary Plant Transient | Safe Shutdown Anticipated operational occurrence Power change |
05000391/LER-2017-003 | 22 May 2017 | Automatic Start of Auxiliary Feedwater System Due to Main Condenser Failure LER 17-003-00 for Watts Bar, Unit 2, Regarding Automatic Start of Auxiliary Feedwater System Due to Main Condenser Failure | Safe Shutdown Anticipated operational occurrence |
05000391/LER-2017-004 | 25 September 2017 | Manual Reactor Trip Due to Inoperable Rod Position Indication LER 17-004-00 for Watts Bar Nuclear Plant, Unit 2 Regarding Manual Reactor Trip Due to Inoperable Rod Position Indication | Safe Shutdown Anticipated operational occurrence |
05000391/LER-2017-005 | 25 January 2018 | Unplanned Emergency Core Cooling System Injection into the Reactor Coolant System due to Personnel Error LER 17-005-00 for Watts Bar, Unit 2, Regarding Unplanned Emergency Core Cooling System Injection into the Reactor Coolant System due to Personnel Error | Safe Shutdown |
CNL-13-102, TVA - Submittal of Revision 39 to Central Emergency Control Center - Emergency Plan Implementing Procedure CECC EPIP-8, Dose Assessment Staff Activities During Nuclear Plant Radiological Emergencies | 18 October 2013 | TVA - Submittal of Revision 39 to Central Emergency Control Center - Emergency Plan Implementing Procedure CECC EPIP-8, Dose Assessment Staff Activities During Nuclear Plant Radiological Emergencies | |
CNL-13-110, Central Emergency Control Center - Revision 20 to Emergency Plan Implementing Procedure Revision CECC EPIP-19, Post Accident Fuel Damage Assessment | 8 November 2013 | Central Emergency Control Center - Revision 20 to Emergency Plan Implementing Procedure Revision CECC EPIP-19, Post Accident Fuel Damage Assessment | |
CNL-13-112, Response to NRC Request for Additional Information Related to License Amendment Request to Updated Final Safety Analysis Report Changes Associated with Hydrologic Analysis from Mechanical and Civil Engineering Branch | 21 October 2013 | Response to NRC Request for Additional Information Related to License Amendment Request to Updated Final Safety Analysis Report Changes Associated with Hydrologic Analysis from Mechanical and Civil Engineering Branch | Hydrostatic Earthquake |
CNL-13-113, Submittal of Central Emergency Control Center - Emergency Plan Implementing Procedure Revision. Includes CECC EPIP-9, Revision 50 | 31 October 2013 | Submittal of Central Emergency Control Center - Emergency Plan Implementing Procedure Revision. Includes CECC EPIP-9, Revision 50 | |
CNL-13-114, the Tennessee Valley Authority (TVA) Nuclear Power Group Commercial Grade Dedication Recovery Project - October 2013 Status Report | 31 October 2013 | the Tennessee Valley Authority (TVA) Nuclear Power Group Commercial Grade Dedication Recovery Project - October 2013 Status Report | Commercial Grade Dedication |
CNL-13-115, Change to Commitment Date Response to NRC Request for Additional Information Related to Integrated Plan in Response to Commission Order EA-12-051 | 29 October 2013 | Change to Commitment Date Response to NRC Request for Additional Information Related to Integrated Plan in Response to Commission Order EA-12-051 | Spent Fuel Pool Instrumentation |
CNL-13-116, Response to NRC Request for Additional Information Related to 2012 Steam Generator Inspection Report | 22 November 2013 | Response to NRC Request for Additional Information Related to 2012 Steam Generator Inspection Report | |
CNL-13-119, Revision to Watts Bar Nuclear Plant, Unit 1, Reactor Vessel Surveillance Capsule Withdrawal Schedule | 22 November 2013 | Revision to Watts Bar Nuclear Plant, Unit 1, Reactor Vessel Surveillance Capsule Withdrawal Schedule | |
CNL-13-121, Service List Update for Routine Information | 24 December 2013 | Service List Update for Routine Information | |
CNL-13-122, Service List Update for Documents Containing Official Use Only and Safeguards Information | 24 December 2013 | Service List Update for Documents Containing Official Use Only and Safeguards Information | |
CNL-13-124, Tennessee Valley Authority - Response to NRC Request for Information Pursuant to Title 10 of the Code of Federal Regulations 50.54(f) Regarding the Watts Bar Nuclear Plant Seismic Walkdown Results of Recommendation 2.3 of the Near-Term Ta | 2 December 2013 | Tennessee Valley Authority - Response to NRC Request for Information Pursuant to Title 10 of the Code of Federal Regulations 50.54(f) Regarding the Watts Bar Nuclear Plant Seismic Walkdown Results of Recommendation 2.3 of the Near-Term Task | Fukushima Dai-Ichi Design basis earthquake Earthquake Scaffolding |
CNL-13-125, Response to NRC Request for Additional Information Related to Overall Integrated Plan in Response to the Commission Order Modifying Licenses with Regard to Requirements for Reliable Spent Fuel Pool Instrumentation (Order Number EA-12-051) | 22 November 2013 | Response to NRC Request for Additional Information Related to Overall Integrated Plan in Response to the Commission Order Modifying Licenses with Regard to Requirements for Reliable Spent Fuel Pool Instrumentation (Order Number EA-12-051) ( | Safe Shutdown Earthquake Operating Basis Earthquake FLEX Design basis earthquake Spent Fuel Pool Instrumentation Earthquake |
CNL-13-134, Nuclear Quality Assurance Plan, TVA-NQA-PLN89-A | 5 December 2013 | Nuclear Quality Assurance Plan, TVA-NQA-PLN89-A | Fitness for Duty Offsite Dose Calculation Manual Safe Shutdown Earthquake Coatings Nondestructive Examination B.5.b Process Control Program Fire Protection Program Grace period |
CNL-13-135, Application to Update Watts Bar Unit 1 License Condition 2.F to Allow Two-Unit Operation (WBN-TS-13-18) | 20 December 2013 | Application to Update Watts Bar Unit 1 License Condition 2.F to Allow Two-Unit Operation (WBN-TS-13-18) | Hot Short Safe Shutdown Boric Acid Shutdown Margin High Radiation Area Ultimate heat sink Fire Barrier Safe Shutdown Earthquake Enforcement Discretion Operating Basis Earthquake Operator Manual Action Zebra Mussel Multiple Spurious Operation Emergency Lighting Incorporated by reference Thermoset B.5.b Mitigating Strategies Earthquake Accidental discharge Continuous fire watch Fire Protection Program Fire Watch Hourly Fire Watch |
CNL-13-137, Third Progress Update on Improved Flood Mitigation System Project | 31 December 2013 | Third Progress Update on Improved Flood Mitigation System Project |