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Loss of all offsite power capability, Tabl … Loss of all offsite power capability, Table S-5, to 6.9kV emergency buses 1A-SA and 1B-SB for greater than or equal to 15 minutes.</br>At 1328 EDT, while shutdown in Mode 4 (Hot Shutdown), Harris declared an Unusual Event due to a loss of offsite power. Following the loss of offsite power (LOOP), the Emergency Diesel Generators started and loaded onto their respective emergency buses. The reactor remains stable and shutdown in Mode 4. The licensee is currently investigating the cause of the LOOP and the emergency buses will continue to be powered by the EDGs until the licensee has determined the cause for the LOOP. Offsite power is currently available into the switchyard. The licensee notified the state government, the local government, and the NRC Resident Inspector.</br>Notified DHS SWO, FEMA OPS Center, FEMA National Watch (email only), DHS NICC, Nuclear SSA (email only).</br>* * * UPDATE FROM RALPH DOWNEY TO DONALD NORWOOD AT 1658 EDT ON 10/8/16 * * *</br>The cause (of the LOOP) is not known. Duke Energy Control Center has evaluated the grid and is comfortable with Harris connecting emergency buses back to the grid. Harris Plant is evaluating restoration. Faults were validated on the 115kV Cape Fear North and South supply lines into the Harris switchyard.</br>This notification also addresses various valid actuations of safety systems, including the Emergency Diesel Generators, as well as, potential loss of Emergency Assessment Capabilities due to the LOOP impacting Emergency Planning equipment.</br>The licensee notified the NRC Resident Inspector.</br>Notified R2DO (Bonser), IRD (Grant), and NRR EO (King).</br>* * * UPDATE FROM RALPH DOWNEY TO DONALD NORWOOD AT 1755 EDT ON 10/8/16 * * *</br>The cause of the LOOP has been determined to be a momentary electricity loss on the 115kV Cape Fear North and South supply lines into the Harris switchyard.</br>This event notification also addresses the loss of safety function of the offsite power system which occurred as a result of grid perturbations.</br>The licensee notified the NRC Resident Inspector.</br>Notified R2DO (Bonser), IRD (Grant), and NRR EO (King).</br>* * * UPDATE FROM DUSTIN MARTIN TO DONALD NORWOOD AT 2055 EDT ON 10/8/16 * * *</br>Based on the grid being stable and the 115kV Cape Fear North and South lines being available, the licensee terminated the Unusual Event at 2049 EDT on 10/8/16. </br>The licensee notified the NRC Resident Inspector.</br>Notified R2DO (Bonser), IRD (Grant), and NRR EO (King). Notified DHS SWO, FEMA OPS Center, FEMA National Watch (email only), DHS NICC, Nuclear SSA (email only).</br>* * * UPDATE FROM SARAH McDANIEL TO DONALD NORWOOD AT 1330 EDT ON 10/9/16 * * *</br>10 CFR 50.72(b)(2)(XI) - OFFSITE NOTIFICATION</br>At approximately 1305 EDT on October 9, 2016, Duke Energy personnel notified the North Carolina Department of Environment and Natural Resources of a spill of untreated sanitary wastewater. During a significant rainfall event associated with Hurricane Matthew, wastewater was released from the overflow of a lift station that did not function as a result of a power outage. The untreated sanitary wastewater entered the plant's storm drain system. The release has been stopped and the lift station power is restored. An investigation is in progress to further determine the cause and additional corrective actions.</br>There is no impact to public health and safety or the environment due to this incident.</br>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.</br>The NRC Resident Inspector has been notified.</br>Notified R2DO (Bonser).has been notified.
Notified R2DO (Bonser).
17:28:00, 8 October 2016 +
52,291 +
14:23:00, 8 October 2016 +
17:28:00, 8 October 2016 +
Loss of all offsite power capability, Tabl … Loss of all offsite power capability, Table S-5, to 6.9kV emergency buses 1A-SA and 1B-SB for greater than or equal to 15 minutes.</br>At 1328 EDT, while shutdown in Mode 4 (Hot Shutdown), Harris declared an Unusual Event due to a loss of offsite power. Following the loss of offsite power (LOOP), the Emergency Diesel Generators started and loaded onto their respective emergency buses. The reactor remains stable and shutdown in Mode 4. The licensee is currently investigating the cause of the LOOP and the emergency buses will continue to be powered by the EDGs until the licensee has determined the cause for the LOOP. Offsite power is currently available into the switchyard. The licensee notified the state government, the local government, and the NRC Resident Inspector.</br>Notified DHS SWO, FEMA OPS Center, FEMA National Watch (email only), DHS NICC, Nuclear SSA (email only).</br>* * * UPDATE FROM RALPH DOWNEY TO DONALD NORWOOD AT 1658 EDT ON 10/8/16 * * *</br>The cause (of the LOOP) is not known. Duke Energy Control Center has evaluated the grid and is comfortable with Harris connecting emergency buses back to the grid. Harris Plant is evaluating restoration. Faults were validated on the 115kV Cape Fear North and South supply lines into the Harris switchyard.</br>This notification also addresses various valid actuations of safety systems, including the Emergency Diesel Generators, as well as, potential loss of Emergency Assessment Capabilities due to the LOOP impacting Emergency Planning equipment.</br>The licensee notified the NRC Resident Inspector.</br>Notified R2DO (Bonser), IRD (Grant), and NRR EO (King).</br>* * * UPDATE FROM RALPH DOWNEY TO DONALD NORWOOD AT 1755 EDT ON 10/8/16 * * *</br>The cause of the LOOP has been determined to be a momentary electricity loss on the 115kV Cape Fear North and South supply lines into the Harris switchyard.</br>This event notification also addresses the loss of safety function of the offsite power system which occurred as a result of grid perturbations.</br>The licensee notified the NRC Resident Inspector.</br>Notified R2DO (Bonser), IRD (Grant), and NRR EO (King).</br>* * * UPDATE FROM DUSTIN MARTIN TO DONALD NORWOOD AT 2055 EDT ON 10/8/16 * * *</br>Based on the grid being stable and the 115kV Cape Fear North and South lines being available, the licensee terminated the Unusual Event at 2049 EDT on 10/8/16. </br>The licensee notified the NRC Resident Inspector.</br>Notified R2DO (Bonser), IRD (Grant), and NRR EO (King). Notified DHS SWO, FEMA OPS Center, FEMA National Watch (email only), DHS NICC, Nuclear SSA (email only).</br>* * * UPDATE FROM SARAH McDANIEL TO DONALD NORWOOD AT 1330 EDT ON 10/9/16 * * *</br>10 CFR 50.72(b)(2)(XI) - OFFSITE NOTIFICATION</br>At approximately 1305 EDT on October 9, 2016, Duke Energy personnel notified the North Carolina Department of Environment and Natural Resources of a spill of untreated sanitary wastewater. During a significant rainfall event associated with Hurricane Matthew, wastewater was released from the overflow of a lift station that did not function as a result of a power outage. The untreated sanitary wastewater entered the plant's storm drain system. The release has been stopped and the lift station power is restored. An investigation is in progress to further determine the cause and additional corrective actions.</br>There is no impact to public health and safety or the environment due to this incident.</br>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.</br>The NRC Resident Inspector has been notified.</br>Notified R2DO (Bonser).has been notified.
Notified R2DO (Bonser).
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