Event Notification Report for May 29, 2024
U.S. Nuclear Regulatory Commission
Operations Center
EVENT REPORTS FOR
05/28/2024 - 05/29/2024
Power Reactor
Event Number: 57148
Facility: North Anna
Region: 2 State: VA
Unit: [1] [] []
RX Type: [1] W-3-LP,[2] W-3-LP,[3] M-4-LP
NRC Notified By: Bob Page
HQ OPS Officer: Michael Bloodgood
Region: 2 State: VA
Unit: [1] [] []
RX Type: [1] W-3-LP,[2] W-3-LP,[3] M-4-LP
NRC Notified By: Bob Page
HQ OPS Officer: Michael Bloodgood
Notification Date: 05/29/2024
Notification Time: 08:50 [ET]
Event Date: 05/29/2024
Event Time: 06:24 [EDT]
Last Update Date: 05/29/2024
Notification Time: 08:50 [ET]
Event Date: 05/29/2024
Event Time: 06:24 [EDT]
Last Update Date: 05/29/2024
Emergency Class: Non Emergency
10 CFR Section:
50.72(b)(2)(iv)(B) - RPS Actuation - Critical 50.72(b)(3)(iv)(A) - Valid Specif Sys Actuation
10 CFR Section:
50.72(b)(2)(iv)(B) - RPS Actuation - Critical 50.72(b)(3)(iv)(A) - Valid Specif Sys Actuation
Person (Organization):
Franke, Mark (R2DO)
Franke, Mark (R2DO)
| Unit | SCRAM Code | RX Crit | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode |
|---|---|---|---|---|---|---|
| 1 | A/R | Y | 100 | Power Operation | 0 | Hot Standby |
AUTOMATIC REACTOR TRIP
The following information was provided by the licensee via email and phone:
"On May 29, 2024, at 0624 EDT, Unit 1 automatically tripped from 100 percent power due to a negative rate trip. The unit has been stabilized in mode 3 at normal operating temperature and pressure. The reactor trip was uncomplicated and all control rods fully inserted into the core. This reactor protection system actuation is reportable per 10 CFR 50.72(b)(2)(iv)(B). The auxiliary feedwater pumps actuated as designed because of the reactor trip and is reportable per 10 CFR 50.72(b)(3)(iv)(A) for a valid engineered safety feature (ESF) actuation. Decay heat is being removed by the condenser steam dump system and Unit 1 is in a normal shutdown electrical lineup. Unit 2 was not affected by this event."
The NRC Resident has been notified.
The following information was provided by the licensee via email and phone:
"On May 29, 2024, at 0624 EDT, Unit 1 automatically tripped from 100 percent power due to a negative rate trip. The unit has been stabilized in mode 3 at normal operating temperature and pressure. The reactor trip was uncomplicated and all control rods fully inserted into the core. This reactor protection system actuation is reportable per 10 CFR 50.72(b)(2)(iv)(B). The auxiliary feedwater pumps actuated as designed because of the reactor trip and is reportable per 10 CFR 50.72(b)(3)(iv)(A) for a valid engineered safety feature (ESF) actuation. Decay heat is being removed by the condenser steam dump system and Unit 1 is in a normal shutdown electrical lineup. Unit 2 was not affected by this event."
The NRC Resident has been notified.
Agreement State
Event Number: 57149
Rep Org: Florida Bureau of Radiation Control
Licensee: NOVA ENGINEERING AND ENVIRONMENTAL, LLC
Region: 1
City: Homestead State: FL
County:
License #: 4100-1
Agreement: Y
Docket:
NRC Notified By: John Williamson
HQ OPS Officer: Josue Ramirez
Licensee: NOVA ENGINEERING AND ENVIRONMENTAL, LLC
Region: 1
City: Homestead State: FL
County:
License #: 4100-1
Agreement: Y
Docket:
NRC Notified By: John Williamson
HQ OPS Officer: Josue Ramirez
Notification Date: 05/29/2024
Notification Time: 12:20 [ET]
Event Date: 05/29/2024
Event Time: 11:38 [EDT]
Last Update Date: 05/31/2024
Notification Time: 12:20 [ET]
Event Date: 05/29/2024
Event Time: 11:38 [EDT]
Last Update Date: 05/31/2024
Emergency Class: Non Emergency
10 CFR Section:
Agreement State
10 CFR Section:
Agreement State
Person (Organization):
Defrancisco, Anne (R1DO)
NMSS_EVENTS_NOTIFICATION (EMAIL)
Defrancisco, Anne (R1DO)
NMSS_EVENTS_NOTIFICATION (EMAIL)
AGREEMENT STATE REPORT - DAMAGED MOISTURE DENSITY GAUGE
The following is a synopsis of information provided by the Florida Bureau of Radiation Control (BRC) via email and phone:
At 1138 EDT, the radiation safety officer reported that a Troxler gauge was run over by construction equipment. The initial report was that the source did not retract as a result of the damage. The BRC inspector should be prepared to conduct contamination surveys for source leakage and provide guidance on transporting the damaged gauge safely.
Gauge Information
Make: Troxler
Activity: 8 mCi Cs-137, 40 mCi Am-241:Be
Florida Incident No.: FL24-039
The following additional information was obtained from the licensee in accordance with Headquarters Operations Officers Report Guidance:
The gauge was successfully retracted by the BRC inspector and there was no additional personnel exposure from the damaged gauge.
* * * UPDATE ON 5/31/2024 AT 1146 EDT FROM MONROE COOPER TO ERNEST WEST * * *
"A [BRC] inspector responded. The source rod was successfully retracted, contamination swipes were performed on the gauge, and a survey was performed at the location of the accident; no elevated swipes or readings were observed. The gauge was maintained by licensee who will be transporting it to Troxler for evaluation."
Notified R1DO (DeFrancisco) and NMSS Events via email
The following is a synopsis of information provided by the Florida Bureau of Radiation Control (BRC) via email and phone:
At 1138 EDT, the radiation safety officer reported that a Troxler gauge was run over by construction equipment. The initial report was that the source did not retract as a result of the damage. The BRC inspector should be prepared to conduct contamination surveys for source leakage and provide guidance on transporting the damaged gauge safely.
Gauge Information
Make: Troxler
Activity: 8 mCi Cs-137, 40 mCi Am-241:Be
Florida Incident No.: FL24-039
The following additional information was obtained from the licensee in accordance with Headquarters Operations Officers Report Guidance:
The gauge was successfully retracted by the BRC inspector and there was no additional personnel exposure from the damaged gauge.
* * * UPDATE ON 5/31/2024 AT 1146 EDT FROM MONROE COOPER TO ERNEST WEST * * *
"A [BRC] inspector responded. The source rod was successfully retracted, contamination swipes were performed on the gauge, and a survey was performed at the location of the accident; no elevated swipes or readings were observed. The gauge was maintained by licensee who will be transporting it to Troxler for evaluation."
Notified R1DO (DeFrancisco) and NMSS Events via email