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Event Notification Report for January 28, 2025

U.S. Nuclear Regulatory Commission
Operations Center

EVENT REPORTS FOR
01/27/2025 - 01/28/2025

EVENT NUMBERS
57501 57502 57515 57516
Agreement State
Event Number: 57501
Rep Org: Colorado Dept of Health
Licensee: Casa Bonita
Region: 4
City: Lakewood   State: CO
County:
License #: GL002469
Agreement: Y
Docket:
NRC Notified By: Kathryn Kirk
HQ OPS Officer: Kerby Scales
Notification Date: 01/21/2025
Notification Time: 14:50 [ET]
Event Date: 01/21/2025
Event Time: 00:00 [MST]
Last Update Date: 01/21/2025
Emergency Class: Non Emergency
10 CFR Section:
Agreement State
Person (Organization):
Deese, Rick (R4DO)
NMSS_EVENTS_NOTIFICATION (EMAIL)
ILTAB, (EMAIL) (EMAIL)
Event Text
AGREEMENT STATE REPORT - LOST EXIT SIGNS

The following is a summary of information received from the Colorado Department of Public Health and Environment via email:

Three exit signs, each containing 10 curies of tritium (30 curies total), were determined to be lost by the licensee.

Manufacturer: Isolite Corporation
Model Number: SLX60

Colorado Event Number: CO25001


THIS MATERIAL EVENT CONTAINS A 'Less than Cat 3' LEVEL OF RADIOACTIVE MATERIAL

Sources that are "Less than IAEA Category 3 sources," are either sources that are very unlikely to cause permanent injury to individuals or contain a very small amount of radioactive material that would not cause any permanent injury. Some of these sources, such as moisture density gauges or thickness gauges that are Category 4, the amount of unshielded radioactive material, if not safely managed or securely protected, could possibly - although it is unlikely - temporarily injure someone who handled it or were otherwise in contact with it, or who were close to it for a period of many weeks. For additional information go to http://www-pub.iaea.org/MTCD/publications/PDF/Pub1227_web.pdf


Agreement State
Event Number: 57502
Rep Org: Illinois Emergency Mgmt. Agency
Licensee: Metro Cardiovacular Consultants
Region: 3
City: Oak Lawn   State: IL
County:
License #: IL-02117-01
Agreement: Y
Docket:
NRC Notified By: Gary Forsee
HQ OPS Officer: Natalie Starfish
Notification Date: 01/21/2025
Notification Time: 14:44 [ET]
Event Date: 10/01/2023
Event Time: 00:00 [CST]
Last Update Date: 01/21/2025
Emergency Class: Non Emergency
10 CFR Section:
Agreement State
Person (Organization):
Betancourt-Roldan, Diana (R3DO)
NMSS_EVENTS_NOTIFICATION (EMAIL)
ILTAB, (EMAIL) (EMAIL)
Event Text
AGREEMENT STATE - LOST/MISSING SOURCE

The following information was provided by the Illinois Emergency Management Agency (the Agency) via phone and email:

"On December 13, 2024, the Agency was advised of a licensee that returned an Agency invoice and informed fiscal that they were a closed location. A review of the license and most recent inspection report (April 2021) showed that the licensee was in possession of (1) Cs-137 sealed source. Agency staff conducted a reactive inspection which continued through January 16, 2025, and after extensive investigation, including radiation surveys conducted at the site and interviews of personnel involved, the source could not be traced or located. Therefore, the Cs-137 sealed source (N.A. Scientific, MED 3550 sealed source, serial number 20074, 220.9 microcuries on 6/1/2002) is being reported as a lost source.

"Current activity is calculated as approximately 131 microcuries. Investigation findings indicate the most likely scenario to be that the Cs-137 sealed source was accidentally thrown out as regular trash at some point during the shutdown of nuclear medicine operations at the site. It is believed the source was disposed of around October 2023. Given the time since disposal, it is unlikely any further investigation or corrective action is possible. After initiating appropriate enforcement action, licensing staff will facilitate proper termination of the license.

"Pending no further developments, this matter is considered closed."

Illinois item number: IL250002

THIS MATERIAL EVENT CONTAINS A 'Less than Cat 3' LEVEL OF RADIOACTIVE MATERIAL

Sources that are "Less than IAEA Category 3 sources," are either sources that are very unlikely to cause permanent injury to individuals or contain a very small amount of radioactive material that would not cause any permanent injury. Some of these sources, such as moisture density gauges or thickness gauges that are Category 4, the amount of unshielded radioactive material, if not safely managed or securely protected, could possibly - although it is unlikely - temporarily injure someone who handled it or were otherwise in contact with it, or who were close to it for a period of many weeks. For additional information go to http://www-pub.iaea.org/MTCD/publications/PDF/Pub1227_web.pdf


Power Reactor
Event Number: 57515
Facility: Quad Cities
Region: 3     State: IL
Unit: [1] [2] []
RX Type: [1] GE-3,[2] GE-3
NRC Notified By: Christopher Thompson
HQ OPS Officer: Josue Ramirez
Notification Date: 01/26/2025
Notification Time: 20:35 [ET]
Event Date: 01/26/2025
Event Time: 14:50 [CST]
Last Update Date: 01/26/2025
Emergency Class: Non Emergency
10 CFR Section:
50.72(b)(3)(v)(D) - Accident Mitigation
Person (Organization):
Betancourt-Roldan, Diana (R3DO)
Power Reactor Unit Info
Unit SCRAM Code RX Crit Initial PWR Initial RX Mode Current PWR Current RX Mode
1 N Y 90 Power Operation 90 Power Operation
2 N Y 100 Power Operation 100 Power Operation
Event Text
CONTROL ROOM EMERGENCY VENTILATION AIR CONDITIONING SYSTEM INOPERABLE

The following information was provided by the licensee via phone and email:

"On January 26, 2025, at 1450 CST, it was discovered that the Control Room Emergency Ventilation Air Conditioning (CREVAC) system was inoperable. Due to this inoperability, the system was in a condition that could have prevented the fulfillment of a safety function, and therefore, this condition is being reported as an eight-hour non-emergency notification per 10 CFR 50.72(b)(3)(v)(D). The CREVAC system is a single train system.

"There was no impact on the health and safety of the public or plant personnel. The NRC Resident Inspector has been notified."


Power Reactor
Event Number: 57516
Facility: River Bend
Region: 4     State: LA
Unit: [1] [] []
RX Type: [1] GE-6
NRC Notified By: Darren Farthing
HQ OPS Officer: Tenisha Meadows
Notification Date: 01/27/2025
Notification Time: 14:15 [ET]
Event Date: 01/27/2025
Event Time: 12:05 [CST]
Last Update Date: 01/27/2025
Emergency Class: Non Emergency
10 CFR Section:
50.72(b)(2)(xi) - Offsite Notification
Person (Organization):
Gaddy, Vincent (R4DO)
Power Reactor Unit Info
Unit SCRAM Code RX Crit Initial PWR Initial RX Mode Current PWR Current RX Mode
1 N Y 100 Power Operation 100 Power Operation
Event Text
OFFSITE NOTIFICATION DUE TO WASTEWATER DISCHARGE

The following information was provided by the licensee via phone and email:

"On January 27, 2025, at 1205 CST, River Bend Station performed a notification to the Louisiana Department of Environmental Quality per the Louisiana Pollutant Discharge Elimination System (LPDES) Permit (# LA0042731) due to a wastewater leak. The wastewater leak originated at a sewage lift pump station and resulted in an unauthorized discharge. This notification is being made as a four-hour, non-emergency report for notification to other government agency in accordance with 10 CFR 50.72(b)(2)(xi). There was no impact to the health and safety of the public or plant personnel.

"The NRC Resident Inspector has been notified."