Event Notification Report for July 22, 2024
U.S. Nuclear Regulatory Commission
Operations Center
EVENT REPORTS FOR
07/21/2024 - 07/22/2024
Agreement State
Event Number: 57235
Rep Org: Texas Dept of State Health Services
Licensee: Credo Services LLC
Region: 4
City: Friendswood State: TX
County:
License #: L07225
Agreement: Y
Docket:
NRC Notified By: Art Tucker
HQ OPS Officer: Adam Koziol
Licensee: Credo Services LLC
Region: 4
City: Friendswood State: TX
County:
License #: L07225
Agreement: Y
Docket:
NRC Notified By: Art Tucker
HQ OPS Officer: Adam Koziol
Notification Date: 07/22/2024
Notification Time: 13:21 [ET]
Event Date: 07/22/2024
Event Time: 00:00 [CDT]
Last Update Date: 07/23/2024
Notification Time: 13:21 [ET]
Event Date: 07/22/2024
Event Time: 00:00 [CDT]
Last Update Date: 07/23/2024
Emergency Class: Non Emergency
10 CFR Section:
Agreement State
10 CFR Section:
Agreement State
Person (Organization):
Azua, Ray (R4DO)
NMSS_EVENTS_NOTIFICATION (EMAIL)
Williams, Kevin (NMSS)
Crouch, Howard (IR)
Brown, Alex (ILTAB)
Azua, Ray (R4DO)
NMSS_EVENTS_NOTIFICATION (EMAIL)
Williams, Kevin (NMSS)
Crouch, Howard (IR)
Brown, Alex (ILTAB)
AGREEMENT STATE REPORT - ATTEMPTED THEFT OF CATEGORY 2 MATERIAL
The Texas Department of State Health Services reported an apparent attempted theft of Category 2 radioactive material from the licensee. Local law enforcement was informed.
Texas Incident Number: 10113
SID-03254
Notified DHS SWO, FEMA Ops, USDA Ops, HHS Ops, DOE Ops, CISA Central, EPA EOC, FDA EOC, Nuclear SSA, FEMA National, CWMD Watch Desk
THIS MATERIAL EVENT CONTAINS A 'Category 2' LEVEL OF RADIOACTIVE MATERIAL
Category 2 sources, if not safely managed or securely protected, could cause permanent injury to a person who handled them, or were otherwise in contact with them, for a short time (minutes to hours). It could possibly be fatal to be close to this amount of unshielded radioactive material for a period of hours to days. These sources are typically used in practices such as industrial gamma radiography, high dose rate brachytherapy and medium dose rate brachytherapy. For additional information go to http://www-pub.iaea.org/MTCD/publications/PDF/Pub1227_web.pdf
The Texas Department of State Health Services reported an apparent attempted theft of Category 2 radioactive material from the licensee. Local law enforcement was informed.
Texas Incident Number: 10113
SID-03254
Notified DHS SWO, FEMA Ops, USDA Ops, HHS Ops, DOE Ops, CISA Central, EPA EOC, FDA EOC, Nuclear SSA, FEMA National, CWMD Watch Desk
THIS MATERIAL EVENT CONTAINS A 'Category 2' LEVEL OF RADIOACTIVE MATERIAL
Category 2 sources, if not safely managed or securely protected, could cause permanent injury to a person who handled them, or were otherwise in contact with them, for a short time (minutes to hours). It could possibly be fatal to be close to this amount of unshielded radioactive material for a period of hours to days. These sources are typically used in practices such as industrial gamma radiography, high dose rate brachytherapy and medium dose rate brachytherapy. For additional information go to http://www-pub.iaea.org/MTCD/publications/PDF/Pub1227_web.pdf
Power Reactor
Event Number: 57324
Facility: Watts Bar
Region: 2 State: TN
Unit: [1] [] []
RX Type: [1] W-4-LP,[2] W-4-LP
NRC Notified By: Chris Mitschelen
HQ OPS Officer: Robert A. Thompson
Region: 2 State: TN
Unit: [1] [] []
RX Type: [1] W-4-LP,[2] W-4-LP
NRC Notified By: Chris Mitschelen
HQ OPS Officer: Robert A. Thompson
Notification Date: 09/16/2024
Notification Time: 16:30 [ET]
Event Date: 07/22/2024
Event Time: 12:48 [EDT]
Last Update Date: 09/16/2024
Notification Time: 16:30 [ET]
Event Date: 07/22/2024
Event Time: 12:48 [EDT]
Last Update Date: 09/16/2024
Emergency Class: Non Emergency
10 CFR Section:
50.73(a)(1) - Invalid Specif System Actuation
10 CFR Section:
50.73(a)(1) - Invalid Specif System Actuation
Person (Organization):
Suber, Gregory (R2DO)
Suber, Gregory (R2DO)
| Unit | SCRAM Code | RX Crit | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode |
|---|---|---|---|---|---|---|
| 1 | N | Y | 100 | Power Operation | 100 | Power Operation |
EN Revision Imported Date: 9/17/2024
EN Revision Text: 60-DAY NOTIFICATION OF INVALID SPECIFIED SYSTEM ACTUATION
The following information was provided by the licensee via phone and email:
"At 1248 EDT on July 22, 2024, with Unit 1 in mode 1 at 100% power, a complete actuation of the 'A' train containment ventilation isolation (CVI) occurred. The 'A' train CVI resulted from the failure of a radiation monitor providing input to the isolation circuitry. This radiation monitor was subsequently repaired and a restoration from the CVI was made. The CVI removes containment purge from operation should it be in service and secures other radiation monitors which measure reactor coolant system leakage.
"This report is being made under 10 CFR 50.73(a)(2)(iv)(A) as an event that resulted in an invalid actuation of the 'A' train CVI.
"There was no impact on the health and safety of the public or plant personnel.
"The NRC Resident Inspector was notified of the event."
EN Revision Text: 60-DAY NOTIFICATION OF INVALID SPECIFIED SYSTEM ACTUATION
The following information was provided by the licensee via phone and email:
"At 1248 EDT on July 22, 2024, with Unit 1 in mode 1 at 100% power, a complete actuation of the 'A' train containment ventilation isolation (CVI) occurred. The 'A' train CVI resulted from the failure of a radiation monitor providing input to the isolation circuitry. This radiation monitor was subsequently repaired and a restoration from the CVI was made. The CVI removes containment purge from operation should it be in service and secures other radiation monitors which measure reactor coolant system leakage.
"This report is being made under 10 CFR 50.73(a)(2)(iv)(A) as an event that resulted in an invalid actuation of the 'A' train CVI.
"There was no impact on the health and safety of the public or plant personnel.
"The NRC Resident Inspector was notified of the event."