Semantic search
| Start date | Reporting criterion | Title | Event description | System | LER | |
|---|---|---|---|---|---|---|
| ENS 55413 | 18 August 2021 04:24:00 | 10 CFR 50.72(a)(1)(i), Emergency Class Declaration | Notification of Unusual Event Declared Due to Fire Alarms in Cable Tunnel | At 0024 EDT on 8/18/21, an unusual event was declared (EAL HU 4.1) due to receipt of multiple fire alarms and halon discharge in the cable tunnel. At 0036, the fire brigade verified no signs of fire. Unit 1 remained at 100 percent power and stable. The area is currently being ventilated. Unit 2 was not affected by this event. The licensee has notified State and local authorities and the NRC Resident Inspector. R1 Public Affairs (Screnci) was notified. Notified DHS SWO, FEMA Operations Center, CISA Central, FEMA NWC (email), DHS Nuclear SSA (email), and FEMA NRCC SASC (email).
At 0401 EDT, Beaver Valley terminated their notification of unusual event. The basis for termination was that there was no indication of fire. The licensee will be notifying the NRC Resident Inspector and has notified State and local authorities. Notified R1DO (Jackson), IRD MOC (Gott), NRR EO (Felts), DHS SWO, FEMA Operations Center, CISA Central, FEMA NWC (email), DHS Nuclear SSA (email), and FEMA NRCC SASC (email). | ||
| ENS 52513 | 27 January 2017 11:41:00 | 10 CFR 50.72(a)(1)(i), Emergency Class Declaration | Unusual Event Declared Due to Unverified Fire Alarm in Containment | An Unusual Event (HU.4) was declared at BVPS (Beaver Valley Power Station) Unit 1 at 0641 EST due to a fire alarm in Containment which was unable to be verified extinguished within 15 minutes. Current Containment parameters do not indicate an actual fire. The Fire Alarm has subsequently been reset (at 0648 EST). The Licensee notified the NRC Resident Inspector." The Licensee has notified State and local government agencies. A containment entry is planned for 1000 EST to verify that there is no fire. Unit 1 continues at 100 percent power. Unit 2 was unaffected. Notified DHS SWO, FEMA Ops Center, and NICC Watch Officer. E-mailed FEMA NWC and Nuclear SSA.
The time of the fire alarm reset was at 0648 EST on 1/27/2017. The Unusual Event has been terminated at 0934 EST on 1/27/2017 after a containment entry and visual inspection determined no fire or indications of a fire exist. The following notifications were made: Commonwealth of Pennsylvania Emergency Management Agency, Beaver County in Pennsylvania, The State of Ohio Emergency Management Agency, Columbia County in Ohio, The State of West Virginia Emergency Management Agency and Hancock County in West Virginia. The Licensee notified the NRC Resident Inspector. Notified R1DO (Welling), NRR EO (Miller), and IRD MOC (Gott). Notified DHS SWO, FEMA Ops Center, and NICC Watch Officer. E-mailed FEMA NWC and Nuclear SSA. | ||
| ENS 51631 | 1 January 2016 21:34:00 | 10 CFR 50.72(a)(1)(i), Emergency Class Declaration | Unusual Event Declared Due to Unverified Fire Alarm in Containment | Unusual Event declared at BVPS (Beaver Valley Power Station) Unit 1 at 1634 EST due to a fire alarm in Containment (which was) unable to be verified extinguished within 15 minutes. Current Containment parameters do not indicate an actual fire. The licensee notified the NRC Resident Inspector and State and local government agencies. Notified DHS SWO, FEMA Ops Center, and NICC Watch Officer. E-mailed FEMA NWC and Nuclear SSA.
At 1655 the fire alarm was reset. The Unusual Event has been terminated at 2035 EST after a containment entry and visual inspection determined no fire or indications of fire exist. The licensee notified the NRC Resident Inspector and State and local government agencies. Notified R1DO (McKinley), NRR EO (Morris), and IRD MOC (Gott). Notified DHS SWO, FEMA Ops Center, and NICC Watch Officer. E-mailed FEMA NWC and Nuclear SSA. | ||
| ENS 49865 | 2 March 2014 05:13:00 | 10 CFR 50.72(a)(1)(i), Emergency Class Declaration | Unusual Event Declared Due a Fire Alarm in the Containment Building | An Unusual Event (NOUE) was declared at 0013 EST on 3/2/2014 due to a possible fire in the protected area inside containment which could not be verified within 15 minutes (EAL HU4). A containment building smoke alarm was received at 2120 on 3/1/14 after indications that a relief valve lifted during a safety injection accumulator fill evolution. Diverse containment instrumentation was checked and showed that containment dew point was elevated while containment temperature and pressure remained steady. The fire alarm was reset and did not reflash. A containment entry will be made to investigate the alarm. There are no requests for the local fire department to respond and there are no indications of a radiological release to the environment. The NRC Resident Inspector has been notified. The licensee notified the Commonwealth of Pennsylvania Emergency Management Agency, Beaver County in Pennsylvania, the State of Ohio, Columbiana County in Ohio, the State of West Virginia and Hancock County in West Virginia. Notified DHS SWO, FEMA, NICC and Nuclear SSA (via email).
The licensee terminated the NOUE at 0205 EST after a containment entry determined no fire or indications of fire existed. Notified R1DO (DeFrancisco) IRD (Grant), NRR EO (Nieh), DHS SWO, FEMA, DHS NICC, and Nuclear SSA (via email). | ||
| ENS 49505 | 5 November 2013 23:28:00 | 10 CFR 50.72(b)(2)(iv)(B), RPS System Actuation 10 CFR 50.72(a)(1)(i), Emergency Class Declaration 10 CFR 50.72(b)(3)(iv)(A), System Actuation | Notification of Unusual Event Due to Explosion and Fire in the Turbine Building | On 11/5/13 at 1746 (EST), Beaver Valley Unit 1 Generator tripped on 'C' Transformer differential protection. The Unit was at 47%, so an automatic trip of the reactor was not expected. The reactor was tripped manually. Entered E-0 Reactor Trip Response. The Aux Feedwater Turbine Driven Pump automatically started as required and one motor driven pump was manually started. At 1748, the control room received report of fire in the Turbine building. The deluge system had actuated and extinguished the fire in the Turbine plant mezzanine. Off-site assistance was staged and available. At 1828, an Unusual Event was declared when fire brigade reports indications that an explosion and fire had occurred in a cable tray in the Unit 1 Turbine Mezzanine. The (NRC) Resident Inspector was notified of the events that occurred. At 1836, NRC (Resident Inspector) was notified of the Unusual Event. Cause of the cable tray explosion and fire is being investigated. The reactor trip was uncomplicated and Unit 1 is stable in mode 3 with decay heat being released to the main condenser. Normal offsite power is available. Unit 2 continues to operate at 100% and there is no impact on the health and safety of the public.
At 1959 on 11/5/13, the licensee terminated the Unusual Event. The licensee has notified the NRC Resident Inspector. Notified the R1DO (Noggle), NRR EO (Skeen), IRD (Marshall). Notified the DHS SWO, FEMA, DHS NICC, and Nuclear SSA via e-mail. | Feedwater Main Condenser | 05000334/LER-2013-003 |
| ENS 49116 | 14 June 2013 12:35:00 | 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release 10 CFR 50.72(a)(1)(i), Emergency Class Declaration | Unusual Event Declared Due to High Co2 Levels in the Turbine Building | Beaver Valley Unit 2 declared an Unusual Event (EAL HU.5, Toxic Gas Release) at 0835 EDT hours due to a CO2 (Toxic Gas) discharge in the turbine building. No report of fire and no injuries resulted from discharge. At 0851 EDT, the turbine building was clear of any detectible CO2. There was no operational impact from the CO2 discharge. The cause of the CO2 discharge is under investigation. The required states and counties were notified. The Resident NRC inspector was notified. The inadvertent CO2 discharge was from the turbine fire protection system which now isolated while troubleshooting is in progress. Notified DHS SWO, FEMA, DHS NICC, and Nuclear SSA via email.
Beaver Valley Unit 2 has terminated the Unusual Event at 0955 EDT * * * Notified R1DO (Dentel), NRR EO (Chernoff), IRD (Grant), DHS SWO, FEMA, DHS NICC, and Nuclear SSA via email. | ||
| ENS 45517 | 24 November 2009 08:05:00 | 10 CFR 50.72(a)(1)(i), Emergency Class Declaration | Unusual Event - Reactor Coolant System Leakage Greater than 25 Gpm | Beaver Valley Unit 2 declared an unusual event due to reactor coolant system unidentified leakage greater than 25 GPM into the pressurizer relief tank. Leakage occurred during shutdown of the residual heat removal system Train-A. The Train-A suction relief valve lifted due to pressure from the in-service Train-B residual heat (removal) system. The leakage has been stopped by isolating Train-A RHR from Train-B RHR. The duration of relief valve lifting was about 9 minutes. The pressurizer relief tank remained intact. All other systems functioned as designed and the plant is stable. Containment was closed at time of the event. No radioactive release occurred. The licensee terminated the unusual event at 0404 EST. The licensee notified the NRC Resident Inspector.
Licensee clarified that the event was due to identified leakage not unidentified leakage as stated in the paragraph above. Notified R1DO. | Reactor Coolant System Residual Heat Removal | |
| ENS 45143 | 19 June 2009 01:39:00 | 10 CFR 50.72(a)(1)(i), Emergency Class Declaration | Emergency Declared Due to Indicated Fire in Emergency Response Facility Substation | At 2139, the licensee declared a Notification of Unusual Event in response to a fire alarm and CO2 activation in the emergency response facility (ERF) substation. The licensee entered emergency action level (EAL) 4.1. The fire brigade responded to assess for damage. No damage was found. The incident was attributed to a spurious activation of the CO2 system. The licensee terminated the unusual event at 2236. The licensee notified the NRC Resident Inspector. The NRC did not change agency response mode for this event.
The CO2 discharge was isolated to the Emergency Response Facility Substation Building, and the building has been ventilated. Investigation into the cause of the spurious CO2 actuation is ongoing. Notified the R1DO (Burritt) via email. |