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 Issue dateTitleTopic
NL-20-0230, Edwin I. Hatch Nuclear Plant, Unit 2, Primary Containment Penetration Exceeded Maximum Allowable Primary Containment Leakage Rate (La)2 March 2020Edwin I. Hatch Nuclear Plant, Unit 2, Primary Containment Penetration Exceeded Maximum Allowable Primary Containment Leakage Rate (La)Large early release frequency
05000366/LER-2020-0012 March 2020LER 2020-001-00 for Edwin I. Hatch Nuclear Plant, Unit 2, Primary Containment Penetration Exceeded Maximum Allowable Primary Containment Leakage Rate (La)Large early release frequency
05000321/LER-2017-00424 August 2017Tornado Missile Vulnerabilities Result in Condition Prohibited by Technical Specifications
LER 17-004-00 for Edwin I. Hatch Regarding Safety Relief Valves' as Found Settings Resulted in Not Meeting Tech Spec Surveillance Criteria
Safe Shutdown
Unanalyzed Condition
High winds
Tornado Missile
Tornado Generated Missile
Tornado Missile Protection
05000366/LER-2017-00213 April 2017Emergency Diesel Generator Start Due to Inadvertent Electrical Bus De-Energization
LER 17-002-00 for Edwin I. Hatch, Unit 2, Regarding Emergency Diesel Generator Start Due to Inadvertent Electrical Bus De-Energization
05000366/LER-2017-00313 April 2017LER 17-003-00 for Edwin I. Hatch, Unit 2, Regarding Primary Containment Isolation Penetration Exceeded Overall Allowable Technical Specification Leakage Limits
05000321/LER-2017-0027 April 2017High Pressure Coolant Injection System Declared Inoperable Due to Degraded Inverter
LER 17-002-00 for Edwin I. Hatch, Unit 1, Regarding High Pressure Coolant Injection System Declared Inoperable Due to Degraded Inverter
05000366/LER-2016-0043 January 2017Condition Prohibited by Technical Specifications Due to Inoperable PCIV
LER 16-004-00 for Edwin I. Hatch Nuclear Plant, Unit 2, Regarding Condition Prohibited by Technical Specifications Due to Inoperable PCIV
05000366/LER-2016-00213 July 2016Group I Isolation Received During Turbine Testing
LER 16-002-00 for Edwin I. Hatch, Unit 2, Regarding Group 1 Isolation Received During Turbine Testing
05000366/LER-2016-0018 June 20162C EDG Fuel Oil Relief Valve Leakage Caused Train Inoperability
LER 16-001-00 for E.I. Hatch, Unit 2, Regarding 2C EDG Fuel Oil Relief Valve Leakage Caused Train Inoperability
Time of Discovery
Mission time
Design basis earthquake
05000321/LER-2016-00426 May 2016Safety Relief Valves As Found Settings Resulted in Not Meeting Tech Spec Surveillance Criteria
LER 16-004-00 for Edwin I. Hatch Nuclear Plant Unit 1 RE: Safety Relief Valves as Found Settings Resulted in Not Meeting Tech Spec Surveillance Criteria
Corrosion bonding
05000321/LER-2016-00314 April 2016Reactor Coolant System Piping Has Unacceptable Weld Indication Discovered During Refueling Outage
LER 16-003-00 for E.I. Hatch, Unit 1, Regarding Reactor Coolant System Piping Has Unacceptable Weld Indication Discovered During Refueling Outage
Weld Overlay
Liquid penetrant
05000321/LER-2016-00211 April 2016Performance of Operations With the Potential to Drain the Reactor Vessel (OPDRV) Without Secondary Containment
LER 16-002-00 for E.I Hatch, Unit 1, Regarding Performance of Operations With the Potential to Drain the Reactor Vessel (OPDRV) Without Secondary Containment
Enforcement Discretion
05000321/LER-2016-0018 April 2016Performance of Fuel Movement with Inoperable Rod Position Indication System in Violation of Technical Specifications
LER 16-001-00 for Edwin I. Hatch, Unit 1, Regarding Performance of Fuel Movement With Inoperable Rod Position Indication System in Violation of Technical Specifications
Double blade guide
NL-08-1906, LER 08-S01-00, for Edwin I. Hatch, Failure to Report Arrest Results in Inappropriate Access to Protected and Vital Areas19 December 2008LER 08-S01-00, for Edwin I. Hatch, Failure to Report Arrest Results in Inappropriate Access to Protected and Vital AreasFitness for Duty
ML1019404558 May 2008Southern Nuclear Plant E. I. Hatch - Actions for Potential Groundwater Contamination EventsGrab sample
Offsite Dose Calculation Manual
NL-06-2726, LER 06-S01-00 for Edwin I. Hatch Nuclear Plant, Re Contract Employee Failure to Self-Disclose Material Information for Unescorted Access5 December 2006LER 06-S01-00 for Edwin I. Hatch Nuclear Plant, Re Contract Employee Failure to Self-Disclose Material Information for Unescorted Access
ML17252B44015 April 1976LER 76-026-00 for Hatch, Unit 1 Regarding an Occurrence of Open Links in Panel H11-P601 Defeating the Starting of All RHR Pumps After They Had Been Stopped