Semantic search
| Start date | Reporting criterion | Title | Event description | System | LER | |
|---|---|---|---|---|---|---|
| ENS 55450 | 8 September 2021 17:37:00 | 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release | Notification of Environmental Report to Another Government Agency | At 1337 (EDT) on 9/8/2021, V.C. Summer reported the overflow of the Nuclear Operations Building Lift Station (LS-3) to the South Carolina Department of Health and Environmental Control. The lift station overflow was due to a broken discharge pipe from Pump 1 to the common discharge header. The overflow was contained in the valve vault, basin gravel, and the nearby concrete surface. None of the overflow reached any storm drains or waters of the state. This release did not exceed any NRC regulations or reporting criteria. This notification is being made solely as a four-hour, non-emergency notification for a Notification of Other 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.
At 1712 EDT on 9/8/2021, V.C. Summer made Event Notification 55450 notifying the NRC of an environmental report to another government agency, in accordance with 10 CFR 50.72(b)(2)(xi). In the course of station response, it was determined that the lift station overflow did not exceed any federal, state or local reporting criteria or violate any permits. Following this investigation, the report to the South Carolina Department of Health and Environmental Control is considered a courtesy notification and the event does not meet reporting criteria under 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. Notified R2DO (Miller) | ||
| ENS 54742 | 8 June 2020 17:55:00 | 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release | Offsite Notification - Transmission Fluid Spill | At 1725 EDT on 6/8/2020, V.C. Summer Nuclear Station reported a transmission fluid spill to the South Carolina Department of Health and Environmental Control. The spill was the result of a hydraulic hose leak during equipment testing. This spill 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 of Other 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. The spill resulted in 1 - 2 ounces of transmission fluid being released into the Monticello Reservoir. | ||
| ENS 54495 | 27 January 2020 04:54:00 | 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release | Inadvertent Activation of an Early Warning Siren | At 2354 EST, on January 26, 2020, officials with the State Emergency Operations Center and Newberry County, SC were notified of an apparent inadvertent actuation of a single siren in the VC Summer Early Warning Siren System (EWSS). (VC Summer Nuclear Station) VCSNS received a report of siren actuation from a local resident at approximately 2340 EST. The EWSS indication at the Emergency Operations Facility showed siren #35 had actuated. A reset of the EWSS was performed. VCSNS is working to confirm actual siren activation and troubleshoot the issue. This event is still under investigation. This is a non-emergency notification of other government agency. This event is reportable in accordance with 10 CFR 50.72(b)(2)(xi). The NRC Resident Inspector has been notified. The Licensee notified state and local agencies.
The investigation of this event has concluded that EWSS siren #35 did not actuate. This conclusion was reached after interviewing residents who reside directly across the street from EWSS Siren #35, who confirmed that this siren did not actuate. Also, maintenance personnel investigations concluded that the local activation indication was erroneous, due to observed battery readings being normal. Had the siren actuated, its batteries would have been depleted or nearly depleted. The NRC Resident Inspector has been notified. Notified R2DO (Baptist). | ||
| ENS 53020 | 17 October 2017 15:34:00 | 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release | Offsite Notification Due to Sanitary Lift Station Overflow | At approximately 0319 EDT on 10/14/17, site personnel discovered a sanitary lift station overflowing in the protected area. The overflow entered a nearby storm drain that discharges into Outfall 12. The estimated release volume was approximately 50 gallons. At 1134 EDT on 10/17/17 an initial notification was made to South Carolina Department of Health and Environmental Control. The cause of the overflow is still under investigation. Functionality of the lift pump has been restored and cleanup is complete. The NRC Resident Inspector has been notified. | ||
| ENS 52705 | 25 April 2017 13:00:00 | 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness | Fuel Handling Bridge Radiation Monitor Out of Service | On April 25, 2017 at approximately 0900 (EDT), it was identified that power to RM-G8 Area Gamma Radiation Monitor for the Fuel Handling Building Bridge, had not been restored within 72 hours. RM-G8 was de-energized during the B train essential bus outage and was restored on April 25, 2017 at 1148. It was out of service for approximately 92 hours. Compensatory measures were in place per HPP-904 while RM-G8 was out of service. RM-G8 is identified in the emergency plan as an equipment important to emergency response. NUREG-1022, Rev. 3 Supplement 1 Event Report Guidelines 10 CFR 50.72(b)(3)(xiii), allows a 72 hour planned outage time to restore equipment important to emergency response. Since RM-G8 was not restored in 72 hours, it is reportable as an 8 hour ENS. This event should have been reported when it was known that the 72 hour outage time was not going to be met. This issue has been entered in the station's corrective action program. Fuel inspections were occurring during this time with compensatory measures in place. The licensee notified the NRC Resident Inspector. | ||
| ENS 52357 | 9 November 2016 18:39:00 | 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release | Offsite Notification Due to Sanitary System Discharge | At approximately 1008 (EST) on 11/9/16, site personnel discovered a sanitary lift station overflowing in the protected area. The overflow entered a nearby storm drain that discharges into Outfall 13. The estimated release volume is approximately 10 gallons. The release has been stopped. At 1339 an initial notification was made to SCDHEC (South Carolina Department of Health and Environmental Control). The cause of the overflow is still under investigation. Functionality of the lift pump has been restored and cleanup is complete. The NRC Senior Resident has been notified. | ||
| ENS 51954 | 24 May 2016 16:50:00 | 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release | Offsite Notification Due to Onsite Fatality Not Related to Work | At approximately 1250 (EDT), a contract employee was found unresponsive in (their) personal vehicle located in the parking lot outside of the owner controlled area. The Fairfield County Coroner arrived on-site and declared the individual deceased at 1345. The fatality was due to an apparent personal medical issue and not work related. The licensee has notified the NRC Resident Inspector. The licensee has notified State of South Carolina Department of Labor - OSHA. | ||
| ENS 51585 | 4 December 2015 19:00:00 | 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release | Offsite Notification Due to Sanitary Lift Station Overflow | Off-site Notification to South Carolina Department of Health and Environmental Control (SCDHEC). At approximately 1400 (EST) on 12/4/15, site personnel discovered a sanitary lift station overflowing in the owner controlled area. The overflow entered a nearby storm drain that discharges into Outfall 13. The estimated release volume is between 10-15 gallons. The release has been stopped. At 1448, an initial notification was made to SCDHEC. The overflow appears to be the result of securing electrical power to the general area, including the lift station, to support construction activities. Power has been restored and clean-up is in progress. The NRC Senior Resident has been notified. | ||
| ENS 50796 | 7 February 2015 13:48:00 | 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release | Offsite Notification to Occupational Safety and Health Administration (Osha) | At approximately 0848 (EST) on February 7, 2015, a contract employee was found unresponsive at a VC Summer Unit 1 facility outside the Owner Controlled Area. The VC Summer Medical Emergency Response Team responded to the scene and provided assistance until offsite medical personnel arrived. Emergency Medical Services arrived on the scene and transported the individual to a local area hospital. VC Summer has reported this to OSHA and is reporting this to the NRC in accordance with 10 CFR 50.72 (b)(2)(xi). The NRC Resident Inspector has been notified.
At 0935 EST, on February 16, 2015 SCE&G notified OSHA that the contract employee had passed away. This update also corrects the second sentence of the initial notification that station personnel versus the Medical Emergency Response Team responded to the scene. The NRC Resident Inspector has been notified. Notified R2DO (Nease). | ||
| ENS 49722 | 14 January 2014 18:30:00 | 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release | Offsite Notification to South Carolina Department of Health and Environmental Control (Scdhec) | Offsite notification to South Carolina Department of Health and Environmental Control (SCDHEC). At approximately 1330 EST on January 14, 2014, site personnel discovered a fork lift leaking hydraulic oil in the protected area. The estimated amount of hydraulic oil spilled is between 10-15 gallons. Approximately 3 gallons of hydraulic oil from the spill entered a nearby storm drain that discharges into Outfall 13. At 1530 (EST) an initial notification was made to SCDHEC. The spill has been contained and clean up efforts are underway. The NRC Residents have been notified. | ||
| ENS 49345 | 16 September 2013 11:00:00 | 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release | Off-Site Notification to South Carolina Department of Health and Environmental Control (Scdhec) | At approximately 0700 (EDT) on 9/16/13, site personnel discovered a sewer lift station, in the owner controlled area, overflowing. The overflow entered a nearby storm drain that discharges into Outfall 13. The estimated release volume is between 500-1000 gallons. The release has been stopped. At 1045 an initial notification was made to SCDHEC. A pump failure is suspected to be the cause of the back-up and subsequent overflow. Repair and clean-up is in process. The NRC Residents have been notified. | ||
| ENS 48561 | 5 December 2012 13:10:00 | 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release | Offsite Notification Due to a Non-Work Related Medical Event | This is a non-emergency 4-hour informational notification to the NRC in accordance with the reporting requirements of 10 CFR 50.72(b)(2)(xi). On December 5, 2012 at approximately 0810 hours EST, a contract employee within the construction area suffered a non-work related personal medical event. The individual was transported offsite and was pronounced deceased at a local hospital. OSHA was notified at 1134 EST pursuant to the requirements of 29 CFR 1904.39. There was no radioactive contamination involved in this event. South Carolina Electric and Gas Company has not observed any heightened media interest as a result of this event. No other notifications to government agencies are expected. The NRC Resident Inspector has been notified. | ||
| ENS 48518 | 18 November 2012 16:30:00 | 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness | Loss of Assessment Capability Due to Integrated Plant Computer Planned Maintenance | On 11/18/2012 at approximately 1130 EST, the Summer Safety Parameter Display System (SPDS) and the Emergency Response Data System (ERDS) will be taken out of service for approximately 12 hours to support a planned maintenance on an inverter that feeds the station's Integrated Plant Computer System (lPCS). During this time frame. ERDS and SPDS will be unavailable. Should the need arise, plant status information will be communicated to the NRC using other available communication systems. SPDS and ERDS are expected to be restored on 11/18/2012 at 1800 EST. This event is reportable under 10 CFR 50.72(b)(3)(xiii). The NRC Resident Inspector has been notified.
On November 18, 2012, at approximately 1730, IPCS was returned to service. Completing this planned maintenance activity restored the VCSNS Safety Parameter Display System and the Emergency Response Data System (ERDS). ERDS was tested this morning, November 19, 2012, by VCSNS and the NRC ERDS Help Desk to verify system operability. The NRC Resident Inspector has been notified. Notified R2DO (Widmann). | Emergency Response Data System Safety Parameter Display System | |
| ENS 47039 | 7 July 2011 15:00:00 | 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release | Offsite Notification Due to a Contained On-Site Liquid Radwaste Leak | This notification is being made under 10 CFR 50.72(b)(2)(xi) of a situation related to the protection of the environment for which a notification to a state agency has been made. On July 8, 2011, South Carolina Electric & Gas Company (SCE&G) made a voluntary notification to the South Carolina Department of Health and Environmental Control (SCDHEC) in accordance with the Nuclear Energy Institute (NEI) Groundwater Protection Initiative for an on-site leak that may exceed 100 gallons. The leak was entirely contained within the V. C. Summer Nuclear Station site boundary. On July 7, 2011 during a routine inspection, a leak was discovered in a liquid radwaste line upstream from its final discharge point and downstream of the release radiation monitors. This line contains processed liquid radwaste that has been sampled and permitted for release. The leak occurred inside a containment enclosure which overflowed. The enclosure was drained and the liquid was returned to the plant for disposal. The leak has been isolated and all radwaste release via this pathway has been suspended. The last inspection of this equipment was conducted on February 14, 2011, and revealed no external leakage. The licensee notified the NRC Resident Inspector. | ||
| ENS 45422 | 9 October 2009 07:20:00 | 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release | Offsite Notification - South Carolina Department of Labor | On October 9, 2009 at approximately 2:30am (EDT) a Wackenhut security services employee was found unconscious and unresponsive within the protected area of V. C. Summer Nuclear Station (VCSNS). On site Medical Emergency Response Team (MERT) responded and administered CPR, oxygen and AED. The non-contaminated patient was transported via ambulance to the Fairfield Memorial Hospital and was pronounced dead at approximately 3:20 am from an apparent pulmonary embolism. The event is reportable per 10CFR50.72(b)(2)(xi). South Carolina Department of Labor, OSHA, and NRC Senior Resident Inspector are being contacted. | ||
| ENS 42991 | 14 November 2006 21:42:00 | 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness | Emergency Siren Activation Capability Inoperable for Approximately 15 Minutes | At 1642 hours on 11/14/06, activation capability was lost to all ENS sirens due to the malfunction of a radio repeater. Plant personnel secured the affected repeater and control was automatically transferred to one of the four remaining functional repeaters. The siren system has been satisfactorily tested. The total siren outage time was approximately 15 minutes. This event has been entered into the station corrective action program for evaluation. State and Local Officials were notified of this event by the licensee. The NRC Resident Inspector was notified of this event by the licensee. | ||
| ENS 42560 | 8 May 2006 16:30:00 | 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness | Early Warning Siren System (Ewss) Declared Inoperable | Intermittent radio functionality was noticed during routine radio operation at 1203. Radio checks were satisfactorily performed immediately after this occurrence; however, at 1230, the intermittent problem recurred. VCSNS declared that the siren control system would not operate at 1230. Our procedures require notification of the South Carolina Emergency Management Division and the local counties within 1 hour. Informal notifications to Fairfield and surrounding counties, and the State Area Coordinator were completed by 1242. Official notifications were made via the ESSX system at 1321. This report is being made to the NRC per 10CFR50.72(b)(3)(xiii) due to the loss of >25% of the EWSS. Additionally, this is being reported per 10CFR50.72(b)(2) (xi) due to the notification made to other government agencies. The local counties notified include Fairfield, Newberry, Richland and Lexington. The outage affects the entire EWSS. The licensee informed state/local agencies and the NRC Resident Inspector.
The EWSS has been returned to service. Notified R2DO (Munday) and NSIR (McMurtray) via email. | ||
| ENS 42436 | 21 March 2006 07:29:00 | 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release | Offsite Notification Due to Inadvertent Emergency Siren Actuation | At approximately 0238 (EST), received first notification of an actuation of the Early Warning Siren System. This call came from Fairfield County 911 dispatcher after they received numerous calls from area residents. Subsequent calls were received from the State Warning Point, Lexington, Newberry and Richland County's 911 dispatcher as well as calls from the public. The Secondary Alarm Station informed the Control Room that when an attempt was made to silence one individual siren (N-86) that was in alarm, all the sirens were inadvertently actuated. Sirens appear to have alarmed for approximately three minutes and then shut off (per design). Subsequent investigation by the Emergency Preparedness group did not reveal any human error. The investigation into the siren actuation is ongoing. All sirens are operable at this time. SCANA Public Relations has been informed and will be preparing a press release, as will the SC Emergency Management Division. A local television station, WIS TV, will be interviewing SCANA Public Relations personnel at approximately 0630. The licensee notified the NRC Resident Inspector. | ||
| ENS 42432 | 20 March 2006 14:00:00 | 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release | Offsite Notification to South Carolina Department of Health and Environmental Control (Dhec) of Sewage Spill | The licensee reported that an onsite underground line to the sanitary sewage pond broke resulting in back drainage from the pond into the environment of an estimated 60,000 to 70,000 gallons of sewage. The pond sewage has gone into the yard drains and possibly some of the nearby creeks. The licensee provided the following information via facsimile: Approximately 0800 received first notification of discharge from Sanitary Aeration Pond, outfall # 005. At 0825 an initial notification was made to DHEC. Temporary covers were installed over the yard drains. These covers seem to be holding the remnants of the fluid. At 0900 the control room was notified the discharge had made it to the yard drains and thus to the environment. At 1240 the estimate of discharge was revised to 60,000 to 70,000 gallons, which made this potentially newsworthy. Suspected cause is a broken underground pipe. No impact on plant operation. The discharge was not radioactive. The licensee notified the NRC Resident Inspector. | ||
| ENS 41755 | 8 June 2005 00:20:00 | 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness | Twenty-Eight Early Warning Sirens Temporarily Inoperable | On June 7th 2005 at 20:00 hours our EWSS System performed an automated poll of active Early Warning Sirens. Normally this action is completed in 15 to 20 minutes. This polling indicated not all sirens had responded to the automated signal. Emergency planning department personnel were notified and called to site to determine system status. Their attempts to manually poll the active sirens determined that twenty eight (28) sirens were not responding. Our EWSS system consists of one hundred six (106) sirens. A loss of twenty eight (28) sirens left our system at seventy three percent (73%) of its capacity. South Carolina state and the four (4) local counties were notified of the systems condition within one hour as required by our Nuclear Licensing procedure (NL-122). This same procedure requires an eight (8) hour telephone notification to the Nuclear Regulatory Commission. This requirement is based on 10CFR50.72(b)(3)(xiii). At 00:15 hours June 8th 2005 our communications department located the faulty siren and disabled its radio transponder, this action restored the other twenty seven (27) sirens to service. This restoration was verified by performing a manual poll of active sirens. The South Carolina state and local counties were notified of system restoration. During the evening hours of June 7th 2005 a thunder storm passed through the station's ten (10) mile emergency planning zone. One siren, Fairfield fifty two (F-52) had apparently been struck by lightning and caused its radio transponder to go into a continuous transmit mode. This errant radio signal blocked the polling signal from the other twenty seven (27) sirens. Based on communications department report had the EWSS system been actuated those twenty eight (28) sirens would not have sounded as required. The licensee has notified State and local authorities as well as the NRC Resident Inspector.
On June 7th 2005 at 20:00 hours our EWSS System performed an automated poll of active Early Warning Sirens. Normally this action is completed in 15 to 20 minutes. This polling indicated not all sirens had responded to the automated signal. Emergency planning department personnel were notified and called to site to determine system status. Their attempts to manually poll the active sirens determined that twenty eight (28) sirens were not responding. Our EWSS system consists of one hundred six (106) sirens. A loss of twenty eight (28) sirens left our system at seventy three percent (73%) of its capacity. South Carolina state and the four (4) local counties were notified of the systems condition within one hour as required by our Nuclear Licensing procedure (NL-122). This same procedure requires an eight (8) hour telephone notification to the Nuclear Regulatory Commission. This requirement is based on 10CFR50.72(b)(3)(xiii). At 00:15 hours June 8th 2005 our communications department located the faulty siren and disabled its radio transponder, this action restored the other twenty seven (27) sirens to service. This restoration was verified by performing a manual poll of active sirens. The South Carolina state and local counties were notified of system restoration. During the evening hours of June 7th 2005 a thunder storm passed through the station's ten (10) mile emergency planning zone. One siren, Fairfield fifty two (F-52) had apparently been struck by lightning and caused its radio transponder to go into a continuous transmit mode. This errant radio signal blocked the polling signal from the other twenty seven (27) sirens. Based on the licensee's Communications Department Report, if the EWSS had been actuated, all sirens, except the faulty siren struck by lightning would have activated. However, the siren feedback system may not have been able to determine if all sirens activated. The licensee notified the NRC Resident Inspector. Notified R2DO (Munday) | ||
| ENS 41363 | 30 January 2005 09:10:00 | 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness | Loss of Emergency Siren Capability Due to Adverse Weather | Loss of greater than 25% EWSS (Early Warning Siren System) due to ice storm. The majority of the sirens were lost in Fairfield and Newberry Counties. The licensee had no estimated time for restoration. The licensee informed state/local agencies and the NRC Resident Inspector.
At 0900 hours 84% of the EWSS was returned to service. At 1430 hours EWSS was declared operable after 98% of the system was returned to service. R2DO (T. Decker) notified. The licensee informed the state/local agencies and the NRC Resident Inspector. | ||
| ENS 41242 | 4 December 2004 03:30:00 | 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness | Early Warning Siren System Failure | Actual failure was 100% (106 sirens) due to loss of power to station on-site/off-site radio repeaters. Failure occurred at 22:30 12-03-04. System was restored on temporary power at 23:06 12-03-04. State and local counties notified of failure at 23:26 12-03-04. System returned to normal power a 01:00 12-04-04. Station resident inspectors notified (J. Zeiler and M. King). System verified communications at 92% availability | ||
| ENS 41114 | 11 October 2004 14:57:00 | 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness | Loss of Emergency Siren Capability Following Planned Siren Maintenance | On October 11, 2004, at 1057 (hrs. EDT) , while performing modification work to support security upgrades, the radio system controller that activates the plant offsite warning system was removed from service during a pre-planned activity. At 1148, the system was rebooted but failed to perform correctly. Approximately 70 % of the sirens were communicating with the system, while plant procedures direct that less than 75 % of the offsite warning system meets the reporting threshold. At 1226, the offsite warning system capability was restored to greater than 75%. Since the removal of the offsite notification network from service was a planned evolution, the county, state and the NRC resident inspector were notified prior to the removal from service. Appropriate compensatory measures were taken by the state and local agencies. The cause of the event was the new Federal Signal activation frequency not reloading after the outage since it was not hard-coded into the software for the radio system controller. This caused all 27 of the Federal Signal sirens from being activated. Three other sirens had pre-existing conditions which made 30 sirens inoperable out of a total of 106. The correct information was loaded into the software via modem and a silent siren test confirmed 93% capability at 1226. The frequency information was hard coded into the software to prevent future occurrences. The licensee notified state/local agencies and the NRC resident inspector. | ||
| ENS 40483 | 27 January 2004 17:00:00 | 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness | Loss of Ens Telephone and Siren System | The licensee reported intermittent problems with the ENS telephone and Early Warning Siren System (EWSS) capability. EWSS capability is less than 75% and is currently 58%. The ENS phone system is repaired. Ice storms are the cause of the communication problems. The licensee notified the NRC Resident Inspector.
The licensee is updating this report to indicate that greater than 75% of the EWSS capability has been restored. The licensee informed the NRC Resident Inspector. Notified R2DO(Kuzo). |