Event Notification Report for July 30, 2024
U.S. Nuclear Regulatory Commission
Operations Center
EVENT REPORTS FOR
07/29/2024 - 07/30/2024
Power Reactor
Event Number: 57253
Facility: Sequoyah
Region: 2 State: TN
Unit: [2] [] []
RX Type: [1] W-4-LP,[2] W-4-LP
NRC Notified By: Tony Langford
HQ OPS Officer: Sam Colvard
Region: 2 State: TN
Unit: [2] [] []
RX Type: [1] W-4-LP,[2] W-4-LP
NRC Notified By: Tony Langford
HQ OPS Officer: Sam Colvard
Notification Date: 07/30/2024
Notification Time: 18:52 [ET]
Event Date: 07/30/2024
Event Time: 16:41 [EDT]
Last Update Date: 07/30/2024
Notification Time: 18:52 [ET]
Event Date: 07/30/2024
Event Time: 16:41 [EDT]
Last Update Date: 07/30/2024
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):
Coovert, Nicole (R2DO)
Coovert, Nicole (R2DO)
| Unit | SCRAM Code | RX Crit | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode |
|---|---|---|---|---|---|---|
| 2 | A/R | Y | 94 | Power Operation | 0 | Hot Standby |
AUTOMATIC REACTOR TRIP DUE TO TURBINE TRIP
The following information was provided by the licensee via phone and email:
"At 1641 EDT, with Unit 2 in Mode 1 at 94 percent power and increasing in power after a forced outage, the reactor automatically tripped due to an electrical trouble turbine trip. The trip was not complex, with all systems responding normally post-trip.
"Operations responded and stabilized the plant. Decay heat is being removed by the auxiliary feedwater (AFW) and steam dump systems. Unit 1 is not affected.
"Due to the reactor protection system actuation while critical, this event is being reported as a four-hour, non-emergency notification per 10 CFR 50.72(b)(2)(iv)(B) and in accordance with 10 CFR 50.72(b)(3)(iv)(A) as an event that results in a valid actuation of the AFW system.
"There was no impact on the health and safety of the public or plant personnel. The NRC resident inspector has been notified."
The following information was provided by the licensee via phone and email:
"At 1641 EDT, with Unit 2 in Mode 1 at 94 percent power and increasing in power after a forced outage, the reactor automatically tripped due to an electrical trouble turbine trip. The trip was not complex, with all systems responding normally post-trip.
"Operations responded and stabilized the plant. Decay heat is being removed by the auxiliary feedwater (AFW) and steam dump systems. Unit 1 is not affected.
"Due to the reactor protection system actuation while critical, this event is being reported as a four-hour, non-emergency notification per 10 CFR 50.72(b)(2)(iv)(B) and in accordance with 10 CFR 50.72(b)(3)(iv)(A) as an event that results in a valid actuation of the AFW system.
"There was no impact on the health and safety of the public or plant personnel. The NRC resident inspector has been notified."
Agreement State
Event Number: 57256
Rep Org: Illinois Emergency Mgmt. Agency
Licensee: Wood River Refinery
Region: 3
City: Roxana State: IL
County:
License #: IL-01282-01
Agreement: Y
Docket:
NRC Notified By: Whitney Cox
HQ OPS Officer: Jordan Wingate
Licensee: Wood River Refinery
Region: 3
City: Roxana State: IL
County:
License #: IL-01282-01
Agreement: Y
Docket:
NRC Notified By: Whitney Cox
HQ OPS Officer: Jordan Wingate
Notification Date: 08/01/2024
Notification Time: 10:05 [ET]
Event Date: 07/30/2024
Event Time: 00:00 [CDT]
Last Update Date: 08/01/2024
Notification Time: 10:05 [ET]
Event Date: 07/30/2024
Event Time: 00:00 [CDT]
Last Update Date: 08/01/2024
Emergency Class: Non Emergency
10 CFR Section:
Agreement State
10 CFR Section:
Agreement State
Person (Organization):
Feliz-Adorno, Nestor (R3DO)
NMSS_EVENTS_NOTIFICATION (EMAIL)
Feliz-Adorno, Nestor (R3DO)
NMSS_EVENTS_NOTIFICATION (EMAIL)
AGREEMENT STATE REPORT - STUCK OPEN SHUTTER
The following information was provided by the Illinois Emergency Management Agency (the Agency) via email and phone:
"On July 30, 2024, the licensee, WRB Refining, LP - Wood River Refinery (IL-01282-01) in Roxana, IL, discovered a stuck open shutter on a fixed gauge. They reported this to the Agency on July 31, 2024. The Vega Americas level indicator gauge is located on the 'Coker North Drum 8 Top Gauge' and contains 5000 mCi of Cs-137 (assay date 11/10/2008) with serial number 8626CM, source holder model number SHLG-2-30, source holder serial number 13541754, and tag number LX0544CK. The gauge will be serviced soon. Updates will be provided as available."
The following additional information was obtained from the licensee in accordance with Headquarters Operations Officers Report Guidance:
This poses no safety hazard to the public.
Illinois Item No. IL240017
The following information was provided by the Illinois Emergency Management Agency (the Agency) via email and phone:
"On July 30, 2024, the licensee, WRB Refining, LP - Wood River Refinery (IL-01282-01) in Roxana, IL, discovered a stuck open shutter on a fixed gauge. They reported this to the Agency on July 31, 2024. The Vega Americas level indicator gauge is located on the 'Coker North Drum 8 Top Gauge' and contains 5000 mCi of Cs-137 (assay date 11/10/2008) with serial number 8626CM, source holder model number SHLG-2-30, source holder serial number 13541754, and tag number LX0544CK. The gauge will be serviced soon. Updates will be provided as available."
The following additional information was obtained from the licensee in accordance with Headquarters Operations Officers Report Guidance:
This poses no safety hazard to the public.
Illinois Item No. IL240017