Event Notification Report for February 17, 2025
U.S. Nuclear Regulatory Commission
Operations Center
EVENT REPORTS FOR
02/16/2025 - 02/17/2025
EVENT NUMBERS
57552
57552
Power Reactor
Event Number: 57552
Facility: Surry
Region: 2 State: VA
Unit: [1] [2] []
RX Type: [1] W-3-LP,[2] W-3-LP
NRC Notified By: Thayer Meyer
HQ OPS Officer: Adam Koziol
Region: 2 State: VA
Unit: [1] [2] []
RX Type: [1] W-3-LP,[2] W-3-LP
NRC Notified By: Thayer Meyer
HQ OPS Officer: Adam Koziol
Notification Date: 02/18/2025
Notification Time: 06:00 [ET]
Event Date: 02/17/2025
Event Time: 23:20 [EST]
Last Update Date: 02/19/2025
Notification Time: 06:00 [ET]
Event Date: 02/17/2025
Event Time: 23:20 [EST]
Last Update Date: 02/19/2025
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):
Penmetsa, Ravi (R2DO)
Penmetsa, Ravi (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 |
| 2 | N | Y | 100 | Power Operation | 100 | Power Operation |
EN Revision Imported Date: 2/20/2025
EN Revision Text: LOSS OF COMMUNICATION CAPABILITY
The following information was provided by the licensee via phone and email:
"At approximately 2320 EST on 02/17/2025, it was discovered that external network access was unavailable, to include access to DEENS (Dominion Energy Emergency Notification System) rendering the system non-functional. Subsequently, the backup method for activating the station ERO (Emergency Response Organization) was attempted and was unable to be verified. Therefore, neither the primary nor backup methods for activating the site ERO were available. Corporate IT has been notified and is investigating. [Control room staff] contacted the North Anna Power Station and verified similar issues with DEENS availability and backup ERO activation.
"On 02/18/2025, at 0403, an additional backup ERO activation phone number was provided [and documented in a standing order] in the event that the backup number listed in attachment 7 of EP-AA-CSD-201 (Notifications and Communications) is not available.
"This event is reportable in accordance with 10CFR50.72(b)(3)(xiii), any event that results in a major loss of offsite communications capability.
"The external network access and DEENS were restored on 02/18/2025 at 0725.
"The NRC Resident Inspector has been notified."
* * * UPDATE ON 2/19/2025 AT 1107 EST FROM FORREST COPELAND TO SAMUEL COLVARD * * *
"It has since been determined that the phone number provided at 0400 on 2/18/2025, would not have worked to activate the ERO. However, the network issues were resolved at approximately 0700 on 2/18/2025 when DEENS capability was restored."
Notified R2DO (Penmetsa).
EN Revision Text: LOSS OF COMMUNICATION CAPABILITY
The following information was provided by the licensee via phone and email:
"At approximately 2320 EST on 02/17/2025, it was discovered that external network access was unavailable, to include access to DEENS (Dominion Energy Emergency Notification System) rendering the system non-functional. Subsequently, the backup method for activating the station ERO (Emergency Response Organization) was attempted and was unable to be verified. Therefore, neither the primary nor backup methods for activating the site ERO were available. Corporate IT has been notified and is investigating. [Control room staff] contacted the North Anna Power Station and verified similar issues with DEENS availability and backup ERO activation.
"On 02/18/2025, at 0403, an additional backup ERO activation phone number was provided [and documented in a standing order] in the event that the backup number listed in attachment 7 of EP-AA-CSD-201 (Notifications and Communications) is not available.
"This event is reportable in accordance with 10CFR50.72(b)(3)(xiii), any event that results in a major loss of offsite communications capability.
"The external network access and DEENS were restored on 02/18/2025 at 0725.
"The NRC Resident Inspector has been notified."
* * * UPDATE ON 2/19/2025 AT 1107 EST FROM FORREST COPELAND TO SAMUEL COLVARD * * *
"It has since been determined that the phone number provided at 0400 on 2/18/2025, would not have worked to activate the ERO. However, the network issues were resolved at approximately 0700 on 2/18/2025 when DEENS capability was restored."
Notified R2DO (Penmetsa).