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 Issue dateTitleTopic
05000397/LER-2017-00730 November 2017Valve Closure Results in Momentary Increase in Secondary Containment Pressure
LER 17-007-00 for Columbia Generating Station Regarding Valve Closure Results in Momentary Increase in Secondary Containment Pressure
05000397/LER-2017-0069 November 2017CONDITION PROHIBITED BY TECHNICAL SPECIFICATIONS DUE TO INCOMPLETE ACTION STATEMENT
LER 17-006-00 for Columbia Generating Station for Condition Prohibited by Technical Specifications Due to Incomplete Action Statement
05000397/LER-2017-0059 November 2017Valve Closure Results in Momentary Increase in Secondary Containment Pressure
LER 17-005-00 for Columbia Generating Station Regarding Valve Closure Results in Momentary Increase in Secondary Containment Pressure
05000397/LER-2017-00418 October 2017MANUAL REACTOR SCRAM DUE TO HIGH MAIN CONDENSER BACK PRESSURE
LER 17-004-00 for Columbia Generating Station Regarding Manual Reactor Scram Due to High Main Condenser Back Pressure
Temporary Modification
05000397/LER-2016-00227 September 20171 OF 3
LER 16-002-01 for Columbia Generating Station Regarding Valve Closure Results in Momentary Increase in Secondary Containment Pressure
05000397/LER-2016-00329 August 2017Failure of Fan to Start Results in Momentary Increase in Secondary Containment Pressure
LER 16-003-01 for Columbia Regarding Failure of Fan to Start Results in Momentary Increase in Secondary Containment Pressure
05000397/LER-2017-00324 August 2017Momentary loss of Secondary Containment due to Weather
LER 17-003-00 for Columbia Generating Station Regarding Momentary Loss of Secondary Containment due to Weather
05000397/LER-2017-00210 July 2017Implementation of Enforcement Guidance Memorandum 11-003, Revision 3
LER 17-002-00 for Columbia Generating Station re Implementation of Enforcement Guidance Memorandum 11-003, Revision 3
Water Inventory Control
Scram Discharge Volume
Recently irradiated fuel
05000397/LER-2016-0048 June 20171 OF 3
LER 16-004-01 for Columbia Generating Station Regarding Automatic Scram Due to Off-site Load Reject
05000397/LER-2017-00120 March 2017Contactor Coil Failure Results in Tripping of HPCS Diesel Mixed Air Fan
LER 17-001-00 for Columbia Generating Station Regarding Contactor Coil Failure Results in Tripping of HPCS Diesel Mixed Air Fan
Time of Discovery
05000397/LER-2016-00515 February 2017Leak in Minimum Flow Line Makes HPCS and Primary Containment Inoperable
LER 16-005-00 for Columbia Generating Station Regarding Leak in Minimum Flow Line Makes HPCS and Primary Containment Inoperable
Time of Discovery
Mission time
05000397/LER-2016-00124 May 2016MANUAL REACTOR SCRAM FOLLOWING LOSS OF REACTOR CLOSED COOLING
LER 16-001-00 for Columbia Regarding Manual Reactor Scram Following Loss of Reactor Closed Cooling
05000397/LER-2015-0077 January 2016REACTOR BUILDING PRESSURE GREATER THAN TECHNICAL SPECIFICATIONS REQUIREMENT
LER 15-007-00 for Columbia Regarding Reactor Building Pressure Greater Than Technical Specifications Requirement