Semantic search
Jump to navigation
Jump to search
| Start date | Reporting criterion | Title | Event description | System | LER | |
|---|---|---|---|---|---|---|
| ENS 56864 | 19 November 2023 02:38:00 | 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release | Offsite Notification - Report to Another Government Agency | The following information was provided by the licensee via phone and email: At 2138 EST on November 18, 2023, Harris Nuclear Plant notified the National Response Center of a biodegradable oil leak that entered the Harris Lake. The North Carolina Department of Environmental Quality will also be notified of this condition on November 19, 2023. The oil leak was less than one gallon and came from a temporary pump. The leak has stopped, and spill cleanup is underway. This condition did not violate any NRC regulations or reporting criteria. This notification is being made solely as a four-hour, non-emergency notification for a notification to another government agency. This event is reportable in accordance with 10 CFR 50.72(b)(2)(xi). There was no impact on the health and safety of the public or plant personnel. The NRC Resident Inspector has been notified. | ||
| ENS 53590 | 7 September 2018 04:00:00 | 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release | Notification of Environmental Report to Another Government Agency | At 2210 EDT on September 7, 2018, Duke Energy personnel determined that the following event required notification of a federal agency, North Carolina State agency and a local agency for a chemical spill exceedance. At 2140 EDT on September 7, 2018, plant personnel identified a sodium hypochlorite spill of more than the reportable quantity of 75.9 gallons. This notification is being made as a four-hour, non-emergency notification for a Notification of Other Government Agencies. This event is reportable in accordance with 10 CFR 50.72(b)(2)(xi). There was no impact on the health and safety of the public or plant personnel. The NRC Resident Inspector has been notified. | ||
| ENS 50829 | 17 February 2015 20:55:00 | 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release | Offsite Notification Due to Wastewater Spill | At approximately 1555 EST on February 17, 2015, Duke Energy personnel determined that the following event required notification of North Carolina state agencies for an NPDES (National Pollutant Discharge Elimination System) permit event and a voluntary reporting of tritium. At approximately 2200 EST on February 16, 2015, plant personnel identified a wastewater spill of more than 100 gallons containing a low level of tritium (9,415 picocuries per liter, less than half the EPA drinking water limit of 20,000 picocuries per liter). No additional plant-related radionuclides were detected. The wastewater was released as a result of an overfilled basin and entered the plant's storm drain system. The storm drain system releases to an alternative discharge outfall. The release from the settling basin has been stopped. The report to the state of North Carolina also fulfills Harris Nuclear Plant's voluntary communication to state agencies in accordance with the NEI 07-07 Groundwater Protection Initiative. There is no impact to public health and safety or the environment due to this incident. This event is reportable per 10 CFR 50.72(b)(2)(xi), an event related to protection of the environment for which a notification to other government agencies has been made. The NRC Resident Inspector has been notified. The licensee will notify the State of North Carolina. | ||
| ENS 50177 | 6 June 2014 15:27:00 | 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release | Offsite Notification Due to Waste Water Spill | At approximately 11:27 AM EDT on June 6, 2014, Duke Energy personnel notified the North Carolina Department of Environment and Natural Resources of a spill of treated domestic waste water. The waste water was released through a break in the discharge line from the waste water facility to the permitted discharge outfall. The treated waste water entered the plant's storm drain system. The release has been stopped and the line repaired. An investigation is in progress to determine the cause and any additional corrective actions. There is no impact to public health and safety or the environment due to this incident. This event is reportable per 10 CFR 50.72(b)(2)(xi), an event related to protection of the environment for which a notification to other government agencies has been made. The NRC Resident Inspector has been notified. | ||
| ENS 50169 | 3 June 2014 20:50:00 | 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release | Offsite Notification Due to Spill of Treated Domestic Water | At approximately 4:50 PM EDT on June 3, 2014 Duke Energy personnel notified the North Carolina Department of Environment and Natural Resources of a spill of treated domestic waste water. The waste water was released through a valve onto the surrounding ground and may have entered the plant's storm drain system. The release has been stopped. An investigation is in progress to determine the cause and additional corrective actions. There is no impact to public health and safety or the environment due to this incident. This event is reportable per 10 CFR 50.72(b)(2)(xi), an event related to protection of the environment for which a notification to other government agencies has been made. The NRC Resident Inspector has been notified. The gray water was dripping from a valve onto the ground. The total quantity of the seepage is unknown. | ||
| ENS 49394 | 28 September 2013 01:15:00 | 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release | Tritiated Water Leak from Temporary Piping on Plant Site | 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. On Sept. 27, 2013, at 9:15 pm EDT, plant personnel identified a leak from a temporary transfer pipe on plant property, well within the site boundary. The pipe carries secondary plant and water treatment building waste water for chemical processing. The leak is conservatively estimated to be 240 gallons of water containing a low level of tritium (3,954 picocuries per liter) leaked into the surrounding soil. The EPA drinking water standard is 20,000 picocuries per liter. The leak was stopped and the piping replaced. The health and safety of the public and employees on site are not affected by this event based on the leak location and low tritium level. The NRC Resident Inspector has been notified. | ||
| ENS 49280 | 14 August 2013 12:40:00 | 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release | Offsite Notification Due to a Low Level Tritium Spill | This is a non-emergency notification. During a routine plant inspection, plant personnel discovered a leak from a pipe on plant property on Tuesday, August 13, (2013). An isolation valve, 3WN-38, leaked causing approximately 9,900 gallons of water containing low levels of tritium (5,780 picocuries per liter) to leak onto the surrounding soil. The valve was secured and the leak stopped. Based upon the leak location and low tritium levels, there is no health or safety risk to the public or to employees on the site. There is no impact to public health and safety due to this condition. Due to NPDES requirements at 0840 EDT on August 14, a report of this condition was made to the state of (North Carolina). The State has evaluated the event and classified the event as a spill-non-sewage (no environmental impact). The NRC Resident Inspector has been notified.
Additional voluntary notifications have been made to state agencies in accordance with the Groundwater Protection Initiative following the guidance of NEI 07-07. The licensee has notified the NRC Resident Inspector. Notified R2DO (Musser). | ||
| ENS 49114 | 13 June 2013 22:30:00 | 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release | Notification of North Carolina Emergency Management Due to Spill of Diesel Oil | At 6:30 PM EDT on 6/13/13 an all spill was identified which resulted in approximately one quart of fuel oil spilled to the ground from a diesel powered portable light which overturned during a storm. The oil spill was outside of the dike containment in which the light unit was located and was approximately 10 feet from waters of the Harris Lake (waters of the US). No oil entered the lake. This event was reportable to the state of North Carolina because it occurred within 100 feet of the Harris Lake. At 7:03 PM EDT on 6/13/13 Harris Environmental Services Section personnel made the oil spill notification to North Carolina Emergency Management which was acting on behalf of the North Carolina Department of Environment and Natural Resources. The spill was cleaned up by removing the topsoil in the area. This event is reportable per 10 CFR 50.72(b)(2)(xi) as described in NUREG-1022, based on an event related to protection of the environment for which a notification to other government agencies has been made. There is no impact to public health and safety due to this condition. The NRC Resident Inspector has been notified. | ||
| ENS 48416 | 17 October 2012 15:38:00 | 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release | Offsite Notification of Waste Water Pipe Leak Containing Tritium | The 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 state was notified at 1138 EDT. On October 16, 2012 at 5:12 pm, plant personnel identified a leak from a pipe on plant property. The pipe carries secondary plant and water treatment building waste water for chemical processing. The water, containing a low level of tritium (10,760 picocuries per liter), leaked into the surrounding soil. The surrounding soil is being excavated and the leak is being repaired. The EPA Drinking Water Standard is 20,000 picocuries per liter. 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. The NRC Resident Inspector has been notified. The licensee also plans to notify local authorities. | ||
| ENS 45625 | 10 January 2010 13:30:00 | 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release | 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. | ||
| ENS 44951 | 1 April 2009 18:30:00 | 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release | Offsite Notification to State/Local Agencies Regarding Tritium Release Onsite | On April 1, 2009, the results of an ongoing hydrology study being conducted by Harris Nuclear Plant as part of the voluntary Industry Groundwater Protection Initiative revealed that a pipe leak in the buried Cooling Tower Blowdown line was releasing water containing tritium into surrounding soil. The maximum tritium activity level discovered was 2,120 pCi/L, well below maximum levels allowed by regulation. While the leak rate has not been determined, it appears to be small. The Cooling Tower Blowdown line is used for liquid effluent dilution as part of permitted, routine releases. The permitted liquid effluent release point is the discharge from the Cooling Tower Blowdown line into Harris Lake. This line is leaking upstream of the permitted release point. All leaking water is contained within the site boundary, and based on studies performed by an independent hydrologist, offsite migration is not anticipated. Immediate corrective actions include voluntary notifications, installation of additional monitoring wells at various locations to determine groundwater flow and to check for the presence of tritium. The water containing low levels of tritium is in a localized area immediately surrounding the Cooling Tower Blowdown line. The health and safety of the public are not affected by this event, as the activity levels discovered are significantly below maximum levels allowed by regulation. Harris Nuclear Plant is following the guidance contained 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 informed the State of North Carolina (Division of Radiation Protection and Department of Water Quality) and the NRC Resident Inspector. The licensee will also inform local agencies. | ||
| ENS 43749 | 26 October 2007 15:49:00 | 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release | Press Release Issued Due to Train Derailment | Harris Nuclear Plant has issued a press release at 1149 EDT today related to the events previously reported to the NRC on 10/25/07. Plant operation has not been affected. The following is the content of the licensee's press release: Rail incident on Harris Plant property reported. The wheels of a caboose and part of an empty flatbed car came off the train tracks while accompanying a spent fuel shipping container on Harris Plant property. No injuries occurred and all rail cars remained upright and sustained no damage. The wheels of the rail car carrying the shipping container remained on the tracks, fully upright and fully intact the entire time. There was no damage or impact to the shipping container, and there was no danger to the health and safety of the plant or the public. The rail car was moved safely into its storage location and the shipping container was not affected. This occurred on Harris Plant property. According to procedure, the NRC and local law enforcement were immediately notified. Plant officials report that the rail cars came off the tracks when individuals inaccurately communicated about whether the tracks were prepared for the train's movement. The licensee notified the NRC Resident Inspector. |