Semantic search
| Start date | Reporting criterion | Title | Event description | System | LER | |
|---|---|---|---|---|---|---|
| ENS 54808 | 31 July 2020 21:00:00 | 10 CFR 50.72(a)(1)(i), Emergency Class Declaration | Notice of Unusual Event Due to Hurricane Warning Posted for Area | A Hurricane Warning is in effect for St. Lucie County including the plant site. A Hurricane Warning was confirmed with the State Watch Office at 1700 EDT. As a mater of procedure, St. Lucie Nuclear Power Plant entered an Unusual Event classification for the Hurricane Warning. State and local officials have been notified by the licensee. The NRC Resident Inspector was notified by the licensee. This report is submitted in accordance with 10 CFR 50.72(a)(1)(i) due to the Notice of Unusual Event and 10 CFR 50.72(b)(2)(xi) due to the Offsite Notification. Notified DHS SWO, FEMA OC, DHS NICC WO, CISA IOCC (email), DHS SWO (email); FEMA NWC (email), FEMA Ops Center (email), FEMA-NRCC-sasc (email), NRCC THD Desk (email), NuclearSSA (email).
The Hurricane Warning was downgraded to a Tropical Storm Warning by the National Weather Service for St. Lucie County, including the plant site. At time 1445 EDT, on 08/02/20, St. Lucie Nuclear Plant has terminated from the Unusual Event classification. There are no changes in plant status for either unit. Both units are stable at 100% power. The NRC Resident Inspector was notified of this by the licensee. The licensee notified State and County officials of the termination. Notified R2DO (M. Miller), IRD MOC (Kennedy), NRR EO (C. Miller), DHS SWO, FEMA OC, DHS NICC WO, CISA IOCC (email), DHS SWO (email); FEMA NWC (email), FEMA Ops Center (email), FEMA-NRCC-sasc (email), NRCC THD Desk (email), NuclearSSA (email) | ||
| ENS 54362 | 30 October 2019 04:26:00 | 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 Due to Release of Flammable Gas | On 10/30/19 at 0026 EDT, an Unusual Event (HU3) was declared due to a release of flammable gas to the Unit 1 Pipe Penetration area (Reactor Auxiliary Building). The hydrogen supply valve to the area has been isolated. The area is being ventilated and follow-up air sampling will be performed. The NRC Resident Inspector has been notified. Notified DHS SWO, FEMA Ops Center, DHS NICC, FEMA NWC (email), DHS Nuclear SSA (email), and FEMA NRCC SASC (email).
The Notice of Unusual Event was terminated at 0454 EDT on 10/30/19. The area has been purged and normal access restored. The licensee notified the NRC Resident Inspector. Notified R2DO (McCoy), NRR EO (Miller), and IRD (Grant). Notified DHS SWO, FEMA Ops Center, DHS NICC, FEMA NWC (email), DHS Nuclear SSA (email), and FEMA NRCC SASC (email). | ||
| ENS 54253 | 1 September 2019 21:17:00 | 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release 10 CFR 50.72(a)(1)(i), Emergency Class Declaration | En Revision Imported Date 9/4/2019 | EN Revision Text: NOTIFICATION OF UNUSUAL EVENT DUE TO DECLARATION OF HURRICANE WARNING A hurricane warning is in effect for St. Lucie County including the plant site. A hurricane warning was confirmed with the State Watch Office at 1717 EDT. As a matter of procedure, St. Lucie Nuclear Power Plant entered an Unusual Event classification for the hurricane warning. State and local officials have been notified by the licensee. The NRC Resident Inspector was notified of this by the licensee. This report is submitted in accordance with 10 CFR 50.72(a)(2)(i) due to the Notice of Unusual Event and 10 CFR 50.72(b)(2)(xi) due to the offsite notification.
The Hurricane Warning was downgraded to a Tropical Storm Warning by the National Weather Service for St. Lucie County including the Plant Site. At time 1818 EDT on 9/3/19, St. Lucie Nuclear Power Plant has terminated from the Unusual Event Classification. There are no changes in plant status for either unit. Both units are stable at 100 percent power. The NRC Resident Inspector was notified. Notified the R2DO (Shaeffer), IRDMOC (Kennedy), NRR EO (Walker), R2RA (Dudes via email), NRR (Nieh via email), DHS SWO, FEMA Ops Ctr., DHS NICC, FEMA NWC (email), DHS Nuclear SSA (email), FEMA NRCC (email). | ||
| ENS 53111 | 11 December 2017 04:50:00 | 10 CFR 50.72(a)(1)(i), Emergency Class Declaration | Unusual Event Due to a Smoke Detector Alarm Received Inside Containment | St. Lucie Unit 1 declared an Unusual Event due to a smoke detector alarm received in the Unit 1 Containment Building that was unable to be confirmed within 15 minutes. A Containment entry was completed and no evidence of fire was found. The Unusual Event was terminated at 00:26 on 12/11/17. State and local officials have been notified by the licensee. The NRC Resident Inspector has been notified of this by licensee. Notified DHS SWO, FEMA Operations Center, DHS NICC, FEMA NWC (email), and DHS Nuclear SSA (email). | ||
| ENS 53085 | 22 November 2017 14:37:00 | 10 CFR 50.72(a)(1)(i), Emergency Class Declaration | St. Lucie Unit 2 Unusual Event Due to a Smoke Detector Alarm Received Inside Containment | St. Lucie Unit 2 declared an Unusual Event due to a smoke detector alarm received in the Unit 2 Containment Building that was unable to be confirmed within 15 minutes. A Containment entry is currently being planned to determine the validity of the alarm. State and local officials have been notified by the licensee. The NRC Resident Inspector has been notified. Notified DHS SWO, FEMA Operations Center, DHS NICC, FEMA NWC (email), DHS Nuclear SSA (email), and FEMA NRCC SASC (email).
Personnel entered Containment to determine conditions and found no evidence of smoke, fire or damage to equipment. Event terminated at 1127 EST 11/22/17. The NRC Resident Inspector has been notified. Notified R2DO (Suggs), R2 DRA (Dudes), NRR (Brock), IRD (Gott), and NRR EO (Miller), DHS SWO, FEMA Operations Center, DHS NICC, FEMA NWC (email), DHS Nuclear SSA (email), and FEMA NRCC SASC (email). | ||
| ENS 52956 | 8 September 2017 21:14:00 | 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release 10 CFR 50.72(a)(1)(i), Emergency Class Declaration | Notification of Unusual Event - Hurricane Warning | At time 1700 (EDT) today, the National Weather Service issued a Hurricane Warning for the area including the St. Lucie Nuclear Power Plant. On that basis, a Notice of Unusual Event was declared at time 1714 (EDT). In anticipation of severe weather, the site has completed proceduralized high wind preparations. Both units are currently stable at 100% power. The licensee notified both State and local agencies and has informed the NRC Resident Inspector. No safety-related systems are out of service. The electrical grid is stable. Notified DHS SWO, FEMA Operations Center, DHS NICC, FEMA NWC (email), DHS Nuclear SSA (email), and FEMA NRCC SASC (email).
At 1701 (EDT) today (09/09/17), a 24-hour update was made to state and local governments following the National Weather Service issuing yesterday's hurricane warning for the area including St. Lucie Plant. On that basis, a Notice of Unusual Event was declared yesterday (09/08/17) at 1714 (EDT). There are no changes in plant status for either Unit. In anticipation of severe weather, the site previously completed high wind preparations. Our plants have been specifically built to withstand natural disasters such as hurricanes, tornadoes, earthquakes, flooding and tidal surges. This approach will ensure the safety of operations and our employees and the communities surrounding our plants. Both units are currently stable at 100% power level and will remain at that power since hurricane force winds are not currently projected to reach St. Lucie Plant. The NRC Resident Inspector has been informed. Notified R2DO (Michel).
At 1648 (EDT) today (09/10/17), a 24-hour update was made to state and local governments following the National Weather Service issuing Friday's hurricane warning for the area including St. Lucie Plant. On that basis, a Notice of Unusual Event was declared yesterday (09/08/17) at 1714 (EDT). There are no changes in plant status for either Unit. In anticipation of severe weather, the site previously completed high wind preparations. Our plants have been specifically built to withstand natural disasters such as hurricanes, tornadoes, earthquakes, flooding and tidal surges. This approach will ensure the safety of operations and our employees and the communities surrounding our plants. Both units are currently stable at 100% power level and will remain at that power since hurricane force winds are not currently projected to reach St. Lucie Plant. The NRC Resident Inspector has been informed. Notified R2IRC (Franke).
The Hurricane Warning has been terminated by the National Weather Service for St. Lucie County including the Plant Site. At time 1313 (EDT) on 9/11/17, St. Lucie Nuclear Power Plant has terminated from the Unusual Event Classification. Unit 1 is currently shutdown in Mode 3, Hot Standby. Unit 2 continues to operate in Mode 1, 100 percent power. The licensee notified State and Local Government Agencies, and the NRC Resident Inspector. Notified R2IRC (Munday), R2DO (Michel), NRR EO (King), IRD MOC (Gott), DHS SWO, DOE Ops Center, FEMA Ops Center, HHS Ops Center, DHS NICC, USDA Ops Center, EPA Emergency Ops Center, FDA Emergency Ops Center (email), FEMA NWC (email), DHS Nuclear SSA (email), and FEMA NRCC SASC (email). | ||
| ENS 52280 | 5 October 2016 02:53:00 | 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 Due to a Hurricane Warning | A Hurricane Warning is in effect for St. Lucie County including the Plant Site. A Hurricane Warning was issued by the National Weather Service at 2250 (EDT). St. Lucie Nuclear Power Plant entered an Unusual Event Classification for the Hurricane Warning. State and local officials have been notified by the licensee. The NRC Resident Inspector was notified of this by the licensee. This report is submitted in accordance with 10CFR50.72(a)(1)(i) due to the Notice of Unusual Event and 10CFR50.72(b)(2)(xi) due to the Offsite Notification. Notified DHS SWO, FEMA OPS Center, FEMA National Watch (email only), DHS NICC, Nuclear SSA (email only).
The Hurricane Warning was downgraded to a Tropical Storm Warning by the National Weather Service for St. Lucie County including the Plant Site. At time 1044 (EDT) on 10/7/16, St. Lucie Nuclear Power Plant has terminated from the Unusual Event Classification. The licensee notified the NRC Resident Inspector, State and local authorities. Notified R2 (Jones) NRR EO (King), IRD (Grant), R2DO (Bonser), DHS SWO, FEMA OPS Center, FEMA National Watch (email only), DHS NICC, Nuclear SSA (email only). | ||
| ENS 52191 | 21 August 2016 23:37:00 | 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 | Unusual Event - Loss of Offsite Power | At 35 percent power, a main generator lockout caused the main generator to trip, resulting in a reactor trip of Unit 1. Because of the lockout, power did not transfer to the startup transformers. Both emergency diesel generators started and aligned to the emergency busses. During the trip all control rods fully inserted and no safety or relief valves lifted. The plant is in Mode 3 steaming through the atmospheric relief valves and feeding the steam generators using auxiliary feedwater. There is no reported primary to secondary leakage. Primary coolant is being moved using natural circulation cooling. The trip of Unit 1 had no effect on Unit 2. The licensee notified the NRC Resident Inspector. Notified DHS SWO, FEMA, DHS NICC, and Nuclear SSA (via e-mail).
The Unusual Event was terminated at 2125 EDT after the plant restored normal offsite power. The licensee notified the NRC Resident Inspector. Notified the R2DO (Sandal), IRD (Gott), NRR EO (Miller), DHS SWO, FEMA, DHS NICC, and Nuclear SSA (via e-mail).
On August 21, 2016 at 1926 EDT, St. Lucie Unit 1 experienced a reactor trip and a loss of offsite power due to a main generator inadvertent Energization Lockout Relay actuation. The cause of the lockout is currently under investigation. Coincident with the loss of offsite power, the four reactor coolant pumps deenergized. Both the 1A and 1B Emergency Diesel Generators started on demand and powered the safety related AC buses. All CEAs (Control Element Assemblies) fully inserted into the core. Offsite power to the switchyard remained available during the event, and at 2036, restoration of offsite power to St. Lucie Unit 1 was completed. Decay heat removal is being accomplished through natural circulation with stable conditions from Auxiliary Feedwater and Atmospheric Dump Valves. Currently maintaining pressurizer pressure at 1850 psia and Reactor Coolant System temperature at 532 degrees F. St. Lucie Unit 2 was unaffected and remains in Mode 1 at 100% power. This report is submitted in accordance with 10 CFR 50.72(b)(2)(iv)(B) for the reactor trip and 10 CFR 50.72(b)(3)(iv)(A) for the Specified System Actuation. The licensee notified the NRC Resident Inspector. Notified the R2DO (Sandal).
On August 21, 2016 at 2330 EDT, St. Lucie Unit 1 started two Reactor Coolant Pumps to establish Forced Circulation in order to enhance Decay Heat removal. Plant conditions remain stable with Auxiliary Feedwater and Atmospheric Dump Valves in service. This report is submitted in accordance with 10 CFR 50.72(c)(2)(ii) as a follow up notification of protective measures taken. The licensee notified the NRC Resident Inspector. Notified the R2DO (Sandal). | Steam Generator Reactor Coolant System Emergency Diesel Generator Auxiliary Feedwater Decay Heat Removal Control Rod | |
| ENS 49707 | 9 January 2014 23:03:00 | 10 CFR 50.72(a)(1)(i), Emergency Class Declaration | Unusual Event Declared Due to Severe Rain Storm | On January 9, 2014 St. Lucie Unit 1 declared an Unusual Event based on a severe rain storm, a natural occurrence affecting the Protected Area. Specifically, visual sightings by station personnel that water levels are approaching storm drain system capacity. Countermeasures are being deployed and are currently operating satisfactorily. Both units continue to operate at full power. All safety systems remain available. The licensee has notified the NRC Resident Inspector, state, and other local authorities. Notified R2DO (Hopper), NRR EO (Lubinski) and IRD. Notified DHS SWO, DOE Ops Center, FEMA Ops Center, HHS Ops Center, NICC Watch Officer, and Nuclear SSA via email.
On January 10, 2014 at 0001 EST, St. Lucie Unit 1 terminated an Unusual Event. Site storm drain system functioning as required. Severe weather has passed, site water levels have returned to normal. Notified R2DO (Hopper), NRR EO (Lubinski) and IRD. Notified DHS SWO, DOE Ops Center, FEMA Ops Center, HHS Ops Center, NICC Watch Officer, and Nuclear SSA via email. | ||
| ENS 43929 | 24 January 2008 03:15:00 | 10 CFR 50.72(a)(1)(i), Emergency Class Declaration | Unusual Event - Uncontrolled Hydrogen Leak | St. Lucie Plant made an Unusual Event notification to the Florida State Warning Point @ 2228 EST, 01/23/08 based on a Hydrogen Tube Trailer fitting failure, and subsequent leak of hydrogen gas. The emergency classification was Emergency Action Level #20. A., per St. Lucie Plant EPIP-01, 'Classification of Emergencies'. The hydrogen leak was terminated upon discovery, with no subsequent fire and no personnel injuries. The event (and declaration) was terminated @ 2228 EST, on 01/23/08. The licensee notified the NRC Resident Inspector, and the Commonwealth of Florida Warning Point. | ||
| ENS 42068 | 23 October 2005 09:05:00 | 10 CFR 50.72(a)(1)(i), Emergency Class Declaration | Unusual Event Declared Due to Hurricane Warning | Hurricane Warning for St. Lucie Plants 1 & 2. U-2 will be going to Mode 4 prior to Hurricane force winds on site. U-1 in refueling outage, outage risk safety assessment will be green prior to hurricane force winds on site. The licensee indicated that all emergency diesel generators are operable on both units. The licensee indicated that they needed to restore A train component cooling water on Unit 1. The licensee is in EAL# 11A for Hurricane Warning - Unusual Event. The licensee will notify the NRC Resident Inspector. UPDATE FROM NRC (WILSON) TO NRC (KNOKE) AT 17:00 ON 10/23/05 The NRC entered into Monitoring Mode due to hurricane force winds expected to be at the site within 12 hours. | Emergency Diesel Generator | |
| ENS 41944 | 25 August 2005 03:02:00 | 10 CFR 50.72(a)(1)(i), Emergency Class Declaration | Unusual Event Declared Due to Hurricane Warning | On 8/24/2005, at 2302 an Unusual Event was declared at St. Lucie Plant based upon the 2300 EDT Tropical Storm Katrina Forecast/Advisory. A Hurricane Warning has been issued for the southeast Florida coast from Vero Beach southward to Florida City. A Hurricane Warning means that Hurricane conditions are expected with the warning area within the next 24 hours. The St. Lucie Plant falls within this Hurricane Warning area. The licensee entered the Unusual Event based on EAL '5-B.' Currently Unit 2 'B' Train of Component Cooling Water is out if service for planned maintenance. The licensee notified the state and the NRC Resident Inspector. * * * UPDATE FROM J. ABERNETHY TO ROTTON AT 1824 EDT ON 08/25/05 * * * The licensee terminated the Unusual Event at 1815. Updated National Weather Service data removed the hurricane warning in the area. The licensee notified state and local governments. The licensee notified the NRC Resident Inspector. Notified R2DO (Ayers), NRR EO (Kuo), IRD Manager (Wilson), FEMA (Erwin), and DHS (Haselton). | ||
| ENS 41072 | 26 September 2004 03:56:00 | 10 CFR 50.72(a)(1)(i), Emergency Class Declaration 10 CFR 50.72(b)(3)(iv)(A), System Actuation | Unusual Event Declared Due to a Loss of Offsite Power | At 2356 (EDT), September 25, 2004, off-site power was lost for both units. At the time of the event both units were in mode 4 and cooling down to meet shutdown entry conditions. The shutdown of both units was due to hurricane conditions from hurricane Jeanne. All four emergency diesels (2 per unit) started and properly loaded. Both units are stable in natural circulation cooling. Efforts continue to place both units on shutdown cooling. All systems operated as expected. The plant was already in a Notification of Unusual Event due to the Hurricane. Shutdown Cooling was established on Unit 1 at approximately 0020 EDT on 9/26/04. The licensee informed both state and local agencies and the NRC Resident Inspector. A conference call was held at approximately 0005 EDT with R2 Response Manager (Len Wert), NRR EO (Stu Richards) and IRD (Susan Frant) to discuss the loss of offsite power. The participants concluded that the NRC Monitoring Mode entered at 1515 EDT on 9/25 for the Hurricane was appropriate.
At 2356, September 25, 2004, St. Lucie Station, Units 1 and 2, experienced a loss of off -site power (LOOP). At the time of the LOOP all four emergency diesel generators started and loaded the safety related buses. In it's initial notification of the LOOP (0035 09/26/04, EN# 41067), FPL reported that all systems had performed as expected. However, during it's post LOOP walkdowns of the control room boards the control room operators determined that the 1 B Intake Cooling Water (ICW) pump had not automatically started as expected. The pump was subsequently started from the control room using the manual control switch. The cause for the failure to automatically start will be investigated and corrected prior to returning the unit to service. Notified R2 Response Manager (Len Wert)
At 1050 EDT both units recovered offsite power exiting the criteria for the UE based on LOOP. The licensee informed state and local agencies and the NRC Resident Inspector. HOO Note: See related ENs # 41067, 41071 and 41073. | Emergency Diesel Generator Shutdown Cooling | |
| ENS 41067 | 24 September 2004 21:00:00 | 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release 10 CFR 50.72(a)(1)(i), Emergency Class Declaration | Entered Unusual Event Classification Due to Hurricane Warning in Effect | Hurricane warning in effect for St. Lucie County including Plant Site. Hurricane warning was issued by the National Weather Service. St. Lucie Nuclear Power Plant entered an Unusual Event Classification per Emergency Action Level 5B (Hurricane Warning). State and Local Officials notified by the licensee. The NRC Resident Inspector was notified of this by the licensee.
St. Lucie Unit 1 commenced a plant shutdown at 0820 in preparation for Hurricane. St. Lucie Unit 2 will commence plant shutdown at 0900 in preparation for Hurricane. St. Lucie still in Unusual Event due to Hurricane warning. Unit 1 expects to enter mode 3 at approximately 1230 hours with Unit 2 entering mode 3 between 1300-1330 hours. Both Units will remain in mode 3 with restart dates to be determined. Highest sustained winds on-site are projected at 120 mph. Current wind speed on-site is between 14-15 mph sustained from a northerly direction. The licensee notified both state and local agencies and will inform the NRC Resident Inspector. Notified R2DO (Robert Haag), NRR (Stu Richards), IRD (Susan Frant), R4DO (William Johnson), FEMA (Erwin) and DHS-DOE Desk (left message).
St. Lucie Units 1 & 2 have shutdown and have been removed from service. R2DO (Haag) , NRR EO (Stu Richards), FEMA (Erwin), DHS (Algen), R4DO (William Johnson), NRC Region 2 (Hufham) & IRD (S. Frant) notified. The NRC Resident Inspector will be notified of this by the licensee.
Hurricane warning has been discontinued. Unusual Event exited at 1412 EDT. R2DO (Haag), NRR EO (Richards), IRD Manager (S. Frant), R4DO (Bill Johnson), FEMA (Austin), DHS (Travis Johnson) , DOE (Robert Turner), NRC/DOT (Crews), USDA (Lori Thomas) & DHS-DOE Desk (message left) notified. The NRC Resident Inspector was notified of this update by the licensee. HOO Note: See related ENs # 41071, 41072 and 41073. | ||
| ENS 41006 | 2 September 2004 14:43:00 | 10 CFR 50.72(a)(1)(i), Emergency Class Declaration | Notice of Unusual Event Declared | St. Lucie declared a Notification of Unusual Event due to hurricane warning in effect for the plant and surrounding areas. The Licensee will notify the NRC Resident Inspector.
Unusual Event update to State Warning Point at 2000 EDT. Both unit 1 and unit 2 in unusual event due to hurricane warning in effect. Unit 1 (is) currently being down-powered off line, unit 2 will commence the downpower at approximately 2100 (EDT) in preparation for the storm. Both units (are) expected off line by 0000. The licensee notified the NRC Resident Inspector, state, and local officials. Notified R2DO (Joel Munday).
As of 1720 the St. Lucie Station has terminated the Notification of Unusual Event for both units due to the downgrade of Hurricane Frances to a tropical storm warning for the local area. Both units are stable (Mode 3) and sustained no damage from the storm. The licensee notified the NRC Resident Inspector, State and local emergency response organizations. Notified R2DO (Munday), NRREO (Case), IRD (Wessman), DHS (Livingston), FEMA (Eaches). | ||
| ENS 40631 | 31 March 2004 23:56:00 | 10 CFR 50.72(a)(1)(i), Emergency Class Declaration | Unusual Event Declared Due to Reactor Coolant System Leakage Greater than 10 Gpm | On 3/31/04, Saint Lucie Unit 1 was in a refueling outage when it experienced a leak-by which appeared to be at a Volume Control Tank to Hold Up Tank divert valve off the Shutdown Purification System. The Reactor Coolant System (RCS) leakage was greater than ten gallons per minute as indicated in the Control Room. The Facility declared an Unusual Event at 1856 EST since the RCS leakage was greater than ten but less fifty gallons per minute. Refueling activities were stopped as a result of the incident. The RCS leakage was isolated and the Unusual Event was terminated at 1915. The licensee has notified local, state and other government agencies through the ring down phone system. The NRC Resident Inspector will be notified. | Reactor Coolant System |