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Category:Licensee Event Report (LER)
MONTHYEAR05000400/LER-2024-001-01, Automatic Reactor Trip Due to Main Generator Lock-Out2024-10-23023 October 2024
Automatic Reactor Trip Due to Main Generator Lock-Out
05000400/LER-2024-001, Automatic Reactor Trip Due to Main Generator Lock-Out2024-07-22022 July 2024
Automatic Reactor Trip Due to Main Generator Lock-Out
05000400/LER-2022-006-02, Auxiliary Feedwater Pump Inoperability2023-07-11011 July 2023
Auxiliary Feedwater Pump Inoperability
05000400/LER-1922-006-01, Auxiliary Feedwater Pump Inoperability2023-03-10010 March 2023
Auxiliary Feedwater Pump Inoperability
05000400/LER-2022-007-01, Automatic Reactor Trip Due to Loss of Power from the a Auxiliary Bus2023-01-26026 January 2023
Automatic Reactor Trip Due to Loss of Power from the a Auxiliary Bus
05000400/LER-2022-006, Auxiliary Feedwater Pump Inoperability2022-12-20020 December 2022
Auxiliary Feedwater Pump Inoperability
05000400/LER-2022-007, Automatic Reactor Trip Due to Loss of Power from the ‘A’ Auxiliary Bus2022-12-20020 December 2022
Automatic Reactor Trip Due to Loss of Power from the ‘A’ Auxiliary Bus
05000400/LER-2022-008, Automatic Actuation of Auxiliary Feedwater System2022-12-19019 December 2022
Automatic Actuation of Auxiliary Feedwater System
05000400/LER-2022-005-01, Manual Reactor Trip Due to B Condensate Pump Motor Failure2022-11-28028 November 2022
Manual Reactor Trip Due to B Condensate Pump Motor Failure
05000400/LER-2022-005, Manual Reactor Trip Due to B Condensate Pump Motor Failure2022-10-21021 October 2022
Manual Reactor Trip Due to B Condensate Pump Motor Failure
05000400/LER-2022-004, Both Trains of High Head Safety Injection Inoperable2022-06-30030 June 2022
Both Trains of High Head Safety Injection Inoperable
05000400/LER-2022-003, Manual Reactor Trip Due to Degrading Condenser Vacuum2022-06-28028 June 2022
Manual Reactor Trip Due to Degrading Condenser Vacuum
05000400/LER-2022-001, Essential Services Chilled Water Chiller Inoperable Due to Pre-Rotation Vane Actuator Control Arm Position2022-03-10010 March 2022
Essential Services Chilled Water Chiller Inoperable Due to Pre-Rotation Vane Actuator Control Arm Position
05000400/LER-2016-0072017-02-0909 February 2017
Containment Spray System Valve Actuation, LER 16-007-01 for Shearon Harris Unit 1, Regarding Containment Spray System Valve Actuation
05000400/LER-2016-0062016-12-14014 December 2016
Reactor Vessel Closure Head Penetration Nozzle Indications Attributed to Primary Water Stress Corrosion Cracking and a Weld Fabrication Void, LER 16-006-00 For Shearon Harris Nuclear Plant, Unit 1 Regarding Reactor Vessel Closure Head Penetration Nozzle Indications Attributed to Primary Water Stress Corrosion Cracking and a Weld Fabrication Void
05000400/LER-2016-0042016-12-0707 December 2016
Reactor Trip and Safety Injection During Turbine Control Testing at Low Power, LER 16-004-00 for Shearon Harris, Unit 1, Regarding Reactor Trip and Safety Injection During Turbine Control Testing at Low Power
05000400/LER-2016-0052016-12-0707 December 2016
Offsite Power Undervoltage Caused Actuation of Several Systems, LER 16-005-00 for Shearon Harris Nuclear Power Plant, Unit 1 Regarding Offsite Power Undervoltage Caused Actuation of Several Systems
05000400/LER-2016-0022016-09-19019 September 2016
'A' Essential Services Chilled Water Chiller Trip due to Oil Leak from Failed Tube Fitting, LER 16-002-00 for Shearon Harris, Unit 1, Regarding 'A' Essential Services Chilled Water Chiller Trip Due to Oil Leak from Failed Tube Fitting
05000400/LER-2016-0012016-09-0101 September 2016
Inadequate Protection from Tornado Missiles Identified Due to Nonconforming Design Conditions, LER 16-001-00 for Shearon Harris, Unit 1, Regarding Inadequate Protection from Tornado Missiles Identified Due to Nonconforming Design Conditions
ML1015505742010-01-12012 January 2010
Event Notification for Harris on Offsite Notification Due to Discovery of Tritium in Water Leakage Onsite
2024-07-22
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Power Reactor Event Number: 45625 Facility: HARRIS Notification Date: 01/12/2010 Region: 2 State: NC Notification Time: 14:10 [ET]
Unit: [1] [ ] [ ] Event Date: 01/10/2010 RX Type: [1] W-3-LP Event Time: 08:30 [EST]
NRC Notified By: MARGARET MALLOY Last Update Date: 01/12/2010 HQ OPS Officer: HOWIE CROUCH Emergency Class: NON EMERGENCY Person (Organization):
10 CFR Section: SCOTT SHAEFFER (R2DO) 50.72(b)(2)(xi) - OFFSITE NOTIFICATION SCRAM Initial Current Unit Code RX CRIT PWR Initial RX Mode PWR Current RX Mode 1 N Y 100 Power Operation I 1001 Power Operation Event Text OFFSITE NOTIFICATION DUE TO DISCOVERY OF TRITIUM IN WATER LEAKAGE ONSITE "At 8:30 a.m. on January 10, 2010, an operator on regular rounds discovered the underground Waste Neutralization Basin Flash Mixer Return Pipe had developed a leak. The eight-inch fiberglass pipe carries secondary plant and water treatment building waste water for chemical processing.
Approximately 1,000 gallons of water containing a low level of tritium (5,590 picocuries per liter) leaked into the surrounding soil. The EPA Drinking Water Standard is 20,000 picocuries per liter.
"Once the leak was discovered, the system was secured and the leak was isolated. Crews are repairing the pipe. The spill has been contained within the plant backfill and is unlikely to migrate off-site or reach the water table. The affected area is located within the plant's site boundary, approximately 15 feet west of the Water Treatment Building, and involves roughly 100 cubic feet of soil. Once repaired, the system will be tested and returned to service.
"Immediate remedial actions involving the affected area include: pumping the water from the saturated ground back into the waste neutralization basin, removal of the tritiated soil and sampling soil in the area for tritium analysis.
"The health and safety of the public are not affected by this event, based on the location of the leak and the low tritium levels. Harris Nuclear Plant is following the guidance in NEI 07-07 and has initiated this Event Notification as a result of our voluntary communication to State agencies in accordance with the Groundwater Protection Initiative."
The licensee will be notifying North Carolina Divisions of Radiation Protection and Water Quality and has notified the NRC Resident Inspector.
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