Event Notification Report for July 09, 2024
U.S. Nuclear Regulatory Commission
Operations Center
EVENT REPORTS FOR
07/08/2024 - 07/09/2024
Power Reactor
Event Number: 57220
Facility: Cooper
Region: 4 State: NE
Unit: [1] [] []
RX Type: [1] GE-4
NRC Notified By: Brian Stander
HQ OPS Officer: Eric Simpson
Region: 4 State: NE
Unit: [1] [] []
RX Type: [1] GE-4
NRC Notified By: Brian Stander
HQ OPS Officer: Eric Simpson
Notification Date: 07/10/2024
Notification Time: 09:32 [ET]
Event Date: 07/09/2024
Event Time: 04:55 [CDT]
Last Update Date: 07/10/2024
Notification Time: 09:32 [ET]
Event Date: 07/09/2024
Event Time: 04:55 [CDT]
Last Update Date: 07/10/2024
Emergency Class: Non Emergency
10 CFR Section:
50.72(b)(3)(xiii) - Loss Comm/Asmt/Response
10 CFR Section:
50.72(b)(3)(xiii) - Loss Comm/Asmt/Response
Person (Organization):
Gepford, Heather (R4DO)
Gepford, Heather (R4DO)
| Unit | SCRAM Code | RX Crit | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode |
|---|---|---|---|---|---|---|
| 1 | N | Y | 100 | Power Operation | 100 | Power Operation |
LOSS OF COMMUNICATIONS CAPABILITIES
The following information was provided by the licensee via email:
"On July 09, 2024, at 0455 CDT the National Weather Service reported to Cooper Nuclear Station that the National Warning System radio tower near Shubert, Nebraska was not working. The Shubert Tower transmitter activates the Emergency Alert System/Tone Alert Radios used for public notification. Additional information from the National Weather Service received July 10, 2024, at 0455 CDT determined that the Shubert Tower transmitter was not able to be repaired within 24 hours and is still non-functional. A backup notification system has been verified to be available during this period.
"This is considered to be a major loss of the Public Prompt Notification System capability. Due to the unplanned loss of the primary notification system for greater than 24 hours, this condition is reportable under 10CFR50.72(b)(3)(xiii), since the backup alerting methods do not meet the primary system design objective. A backup notification system is available to use for notifications if needed.
"The NRC Senior Resident Inspector has been informed."
The following information was provided by the licensee via email:
"On July 09, 2024, at 0455 CDT the National Weather Service reported to Cooper Nuclear Station that the National Warning System radio tower near Shubert, Nebraska was not working. The Shubert Tower transmitter activates the Emergency Alert System/Tone Alert Radios used for public notification. Additional information from the National Weather Service received July 10, 2024, at 0455 CDT determined that the Shubert Tower transmitter was not able to be repaired within 24 hours and is still non-functional. A backup notification system has been verified to be available during this period.
"This is considered to be a major loss of the Public Prompt Notification System capability. Due to the unplanned loss of the primary notification system for greater than 24 hours, this condition is reportable under 10CFR50.72(b)(3)(xiii), since the backup alerting methods do not meet the primary system design objective. A backup notification system is available to use for notifications if needed.
"The NRC Senior Resident Inspector has been informed."
Fuel Cycle Facility
Event Number: 57216
Facility: American Centrifuge Plant
Region: 2 State: OH
Unit: [] [] []
RX Type: Uranium Enrichment Facility
Comments:
NRC Notified By: Brian Summers
HQ OPS Officer: Adam Koziol
Region: 2 State: OH
Unit: [] [] []
RX Type: Uranium Enrichment Facility
Comments:
NRC Notified By: Brian Summers
HQ OPS Officer: Adam Koziol
Notification Date: 07/09/2024
Notification Time: 09:30 [ET]
Event Date: 07/09/2024
Event Time: 07:46 [EDT]
Last Update Date: 07/09/2024
Notification Time: 09:30 [ET]
Event Date: 07/09/2024
Event Time: 07:46 [EDT]
Last Update Date: 07/09/2024
Emergency Class: Non Emergency
10 CFR Section:
70.50(b)(2) - Safety Equipment Failure
10 CFR Section:
70.50(b)(2) - Safety Equipment Failure
Person (Organization):
Suggs, LaDonna (R2DO)
NMSS_EVENTS_NOTIFICATION (EMAIL)
Suggs, LaDonna (R2DO)
NMSS_EVENTS_NOTIFICATION (EMAIL)
CRITICALITY ACCIDENT AND ALARM SYSTEM OUT OF SERVICE FOR TESTING
The following information was provided by the licensee via fax or email:
"The American Centrifuge Plant (ACP) criticality accident and alarm system (CAAS) is designed to detect a nuclear criticality accident and provide audible and visual alarms that alert personnel to evacuate the immediate area, as required by 10 CFR 70.24, criticality accident requirements.
"The CAAS will be temporarily disabled (declared inoperable in accordance with approved plant procedures) to perform periodic CAAS testing activities. The planned CAAS outage is expected to last for approximately 48 hours, commencing at approximately 0800 EDT, on Wednesday, July 10th, 2024. The planned maintenance activities will affect the CAAS in the X-3001 North.
"Essential personnel will be present inside the controlled access area during the maintenance activities. Compensatory measures will be implemented in accordance with section 5.4.4 of the License Application for the American Centrifuge Plant. These measures include the following: evacuation of non-essential personnel from the area of concern and the immediate evacuation zone (IEZ) before removing CAAS equipment from service; limiting access into the area; restricting fissile material movement; and the use of personal alarming dosimeters for personnel that must access the area during the CAAS outage. These measures will be implemented until CAAS coverage is verified to be operational and the CAAS is declared operable in accordance with approved plant procedures.
"American Centrifuge Operating, LLC (ACO) will notify the NRC when CAAS coverage is returned to normal operation.
"The licensee has notified the NRC Project Manager."
ACP condition notification #11933
The following information was provided by the licensee via fax or email:
"The American Centrifuge Plant (ACP) criticality accident and alarm system (CAAS) is designed to detect a nuclear criticality accident and provide audible and visual alarms that alert personnel to evacuate the immediate area, as required by 10 CFR 70.24, criticality accident requirements.
"The CAAS will be temporarily disabled (declared inoperable in accordance with approved plant procedures) to perform periodic CAAS testing activities. The planned CAAS outage is expected to last for approximately 48 hours, commencing at approximately 0800 EDT, on Wednesday, July 10th, 2024. The planned maintenance activities will affect the CAAS in the X-3001 North.
"Essential personnel will be present inside the controlled access area during the maintenance activities. Compensatory measures will be implemented in accordance with section 5.4.4 of the License Application for the American Centrifuge Plant. These measures include the following: evacuation of non-essential personnel from the area of concern and the immediate evacuation zone (IEZ) before removing CAAS equipment from service; limiting access into the area; restricting fissile material movement; and the use of personal alarming dosimeters for personnel that must access the area during the CAAS outage. These measures will be implemented until CAAS coverage is verified to be operational and the CAAS is declared operable in accordance with approved plant procedures.
"American Centrifuge Operating, LLC (ACO) will notify the NRC when CAAS coverage is returned to normal operation.
"The licensee has notified the NRC Project Manager."
ACP condition notification #11933