Semantic search

Jump to navigation Jump to search
 Issue dateTitleTopic
ML18179A16321 June 2018Retraction of Licensee Event Report 2018-002-00, Diesel Generator a Inoperability, a Condition Prohibited by the Plant Technical SpecificationsTime of Discovery
Mission time
05000293/LER-2017-01325 January 20181 OF 4
LER 17-013-00 for Pilgrim Nuclear Power Station Regarding Reportable Conditions Involving Standby Gas Treatment System and Secondary Containment lnoperability Not Reported During the Previous Three Years
Mission time
Recently irradiated fuel
05000293/LER-2017-01213 November 2017Start-Up Transformer Degraded Voltage Relay Found Outside Technical Specification Limit
LER 17-012-00 for Pilgrim Nuclear Power Station Regarding Start-Up Transformer Degraded Voltage Relay Found Outside Technical Specification Limit
05000293/LER-2017-01115 August 2017Simultaneously Opened Reactor Building Airlock Doors Caused Loss of Secondary Containment
LER 17-011-00 for Pilgrim Nuclear Power Station Regarding Simultaneously Opened Reactor Building Airlock Doors Caused Loss of Secondary Containment
Recently irradiated fuel
05000293/LER-2017-0107 August 2017Air Accumulation Creates Small Void in Core Spray Discharge Piping
LER 17-010-00 for Pilgrim re Air Accumulation Creates Small Void in Core Spray Discharge Piping
Time of Discovery
05000293/LER-2017-00117 July 2017Reactor Building Isolation Dampers Failed to Isolate
LER 17-001-01 for Pilgrim Nuclear Power Station Regarding Reactor Building Isolation Dampers Failed to Isolate
05000293/LER-2017-00917 July 2017Supplement to Potential Primary Containment System Inoperability Due to Relay Concerns
LER 17-009-00 for Pilgrim Nuclear Power Station Regarding Potential Primary Containment System lnoperability Due to Relay Concerns
Fuel cladding
05000293/LER-2017-00830 June 2017Supplement to 480V Bus B6 Auto Transfer Function Degraded Due to Time Delay Relay Failure
LER 17-008-00 for Pilgrim re 480V Bus B6 Auto Transfer Function Degraded Due to Time Delay Relay Failure
05000293/LER-2017-00722 June 2017Supplement to Potential Inoperability of Safety Relief Valve 3A
LER 17-007-00 for Pilgrim Regarding Potential Inoperability of Safety Relief Valve 3A
05000293/LER-2016-01014 June 2017MSIV Inoperability Led to a Condition Prohibited by the Plant s Technical Specifications
LER 16-010-01 for Pilgrim Nuclear Power Station re MSIV Inoperability
Packing leak
05000293/LER-2017-00613 June 2017Source Range Monitor Inoperable During Fuel Movement
LER 17-006-00 for Pilgrim Nuclear Power Station Regarding Source Range Monitor Inoperable During Fuel Movement
05000293/LER-2017-0057 June 201710 CFR 50, Appendix J, Option B, Leak Rate Criteria Exceeded
LER 17-005-00 for Pilgrim Regarding 10 CFR 50, Appendix J, Option B, Leak Rate Criteria Exceeded
Fuel cladding
05000293/LER-2017-0042 June 2017Secondary Containment Testing Led to Loss of Safety Function to Both Trains of Standby Gas Treatment System
LER 17-004-00 for Pilgrim Nuclear Power Station Regarding Secondary Containment Testing Led to Loss of Safety Function to Both Trains of Standby Gas Treatment System
Mission time
05000293/LER-2017-00225 May 2017Isolation of HPCI
LER 17-002-00 for Pilgrim Regarding Isolation of HPCI
05000293/LER-2017-00325 May 2017Supplement to Suppression Pool Declared Inoperable Due to High Water Level
LER 17-003-00 for Pilgrim Nuclear Power Station Regarding Pressure Suppression Pool Declared Inoperable Due to High Water Level
Time of Discovery
05000293/LER-2016-0089 December 2016Emergency Diesel Generator 'A' Past Inoperability
LER 16-008-00 for Pilgrim Nuclear Power Station Regarding Emergency Diesel Generator 'A' Past Inoperability
Safe Shutdown
Time of Discovery
Mission time
Abnormal operational transient
05000293/LER-2016-0074 November 2016Manual Reactor Scram Due To Feedwater Regulating Valve Malfunction
LER 16-007-00 for Pilgrim Nuclear Power Station Regarding Manual Reactor Scram Due To Feedwater Regulating Valve Malfunction
Reactor Vessel Water Level
Packing leak
Power change
05000293/LER-2016-00311 July 2016Spent Fuel Storage Design Feature Exceeded
LER 16-003-00 for Pilgrim Nuclear Power Station Regarding Spent Fuel Storage Design Feature Exceeded
Unanalyzed Condition
05000293/LER-2016-00411 July 2016Salt Service Water Pump B Past Operability - Operation or Condition Prohibited by Technical Specifications
LER 16-004-00 for Pilgrim Nuclear Power Station Regarding Salt Service Water Pump B Past Operability - Operation or Condition Prohibited by Technical Specifications
Past operability
05000293/LER-2016-00220 June 2016Online Maintenance Test Configuration Prohibited By Technical Specifications
LER 16-002-00 for Pilgrim Nuclear Power Station Regarding Online Maintenance Test Configuration Prohibited By Technical Specifications
Safe Shutdown
Abnormal operational transient
05000293/LER-2016-0019 June 2016Both Emergency Diesel Generators Inoperable
LER 16-001-00 for Pilgrim Nuclear Power Station Regarding Both Emergency Diesel Generators Inoperable
Safe Shutdown
Abnormal operational transient
Pressure boundary leak
ML13149A17226 May 2013E-mail from Micheal Mulligan to R.Guzman, Pilgrim Evacuation Plan Broken During Blizzard Nemo and Unenforced by the Nrc.
ML06137062211 May 2006LER 06-01-000, Pilgrim Re Manual Scram Due to High Offgas Recombiner Temperature Resulting from Inadequate Preventive Recombiner Preheater Pressure Control Valve ControllerReactor Vessel Water Level
Offsite Dose Calculation Manual
ML0416706158 June 2004LER 99-008-01 for Pilgrim Regarding Automatic Scram at 100 Percent Power Due to Turbine TripReactor Vessel Water Level
Ultimate heat sink
Stroke time
ML02077006127 February 2002LER 99-003-01 for Pilgrim Nuclear Power Station Re Local Leak Rate Test Results Exceeding Allowable Technical Specification Leakage RatesFlow Induced Vibration