Event Notification Report for November 04, 2024
U.S. Nuclear Regulatory Commission
Operations Center
EVENT REPORTS FOR
11/03/2024 - 11/04/2024
Power Reactor
Event Number: 57412
Facility: Monticello
Region: 3 State: MN
Unit: [1] [] []
RX Type: [1] GE-3
NRC Notified By: Derek Grossman
HQ OPS Officer: Sam Colvard
Region: 3 State: MN
Unit: [1] [] []
RX Type: [1] GE-3
NRC Notified By: Derek Grossman
HQ OPS Officer: Sam Colvard
Notification Date: 11/04/2024
Notification Time: 09:02 [ET]
Event Date: 11/04/2024
Event Time: 05:00 [CST]
Last Update Date: 11/04/2024
Notification Time: 09:02 [ET]
Event Date: 11/04/2024
Event Time: 05:00 [CST]
Last Update Date: 11/04/2024
Emergency Class: Non Emergency
10 CFR Section:
50.72(b)(2)(xi) - Offsite Notification
10 CFR Section:
50.72(b)(2)(xi) - Offsite Notification
Person (Organization):
Edwards, Rhex (R3DO)
Edwards, Rhex (R3DO)
| Unit | SCRAM Code | RX Crit | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode |
|---|---|---|---|---|---|---|
| 1 | N | Y | 100 | Power Operation | 100 | Power Operation |
OFFSITE NOTIFICATION - INADVERTENT SIREN ACTUATION
The following information was provided by the licensee via phone and email:
"At 0500 CST, on November 4, 2024, the Monticello Nuclear Generating Plant was notified by Wright County dispatch of a spurious actuation of one emergency response siren that lasted approximately ten minutes. The cause of the actuation has not been determined and the vendor is investigating. The siren is no longer actuating. There was no impact to the health and safety of the public as a result of this event and the offsite response capabilities remain functional. No press release by the licensee is planned at this time. This event is being reported in accordance with 10 CFR 50.72(b)(2)(xi).
"The NRC Resident Inspector has been notified."
The following information was provided by the licensee via phone and email:
"At 0500 CST, on November 4, 2024, the Monticello Nuclear Generating Plant was notified by Wright County dispatch of a spurious actuation of one emergency response siren that lasted approximately ten minutes. The cause of the actuation has not been determined and the vendor is investigating. The siren is no longer actuating. There was no impact to the health and safety of the public as a result of this event and the offsite response capabilities remain functional. No press release by the licensee is planned at this time. This event is being reported in accordance with 10 CFR 50.72(b)(2)(xi).
"The NRC Resident Inspector has been notified."
Non-Agreement State
Event Number: 57436
Rep Org: Puerto Rico Health Department
Licensee: Puerto Rico Health Department
Region: 1
City: Sabana Grande State: PR
County:
License #: 52-25019-01
Agreement: N
Docket:
NRC Notified By: Raul Hernandez Doble
HQ OPS Officer: Karen Cotton-Gross
Licensee: Puerto Rico Health Department
Region: 1
City: Sabana Grande State: PR
County:
License #: 52-25019-01
Agreement: N
Docket:
NRC Notified By: Raul Hernandez Doble
HQ OPS Officer: Karen Cotton-Gross
Notification Date: 11/22/2024
Notification Time: 09:17 [ET]
Event Date: 11/04/2024
Event Time: 15:50 [EST]
Last Update Date: 11/22/2024
Notification Time: 09:17 [ET]
Event Date: 11/04/2024
Event Time: 15:50 [EST]
Last Update Date: 11/22/2024
Emergency Class: Non Emergency
10 CFR Section:
20.2201(a)(1)(i) - Lost/Stolen LNM>1000x
10 CFR Section:
20.2201(a)(1)(i) - Lost/Stolen LNM>1000x
Person (Organization):
Bickett, Carey (R1DO)
NMSS_Events_Notification, (EMAIL)
Bickett, Carey (R1DO)
NMSS_Events_Notification, (EMAIL)
POTENTIAL ORPHANED SOURCE
The following is a summary of information obtained from the Puerto Rico Division of Radiological Health (DRH) via phone and email:
On November 4, 2024, the DRH received a report of a metal device with radiation symbols in a vacant lot in the town of Sabana Grande, Puerto Rico. At 1550 EST, on November 4, 2024, the DRH visited the area with the site engineer and found medical equipment, such as ultrasound machines. Upon viewing radiation symbols on one of the devices found, they decided to move the device to an area away from personnel and instructed everyone to stay away from the object.
The DRH proceeded to take background radiation measurements before approaching the device. Photos and radiation measurements of the device were taken. The radiation levels do not exceed background. The radiation symbol was removed on the understanding that, if there was no emission present, it does not pose any risk and should not be labeled. The object is buried in the same place where it was found.
Based on the information and photos provided, the following was determined by the DRH: the device is part of the Elekta microSelectron Digital equipment (brachytherapy equipment for high-dose cancer treatment). The potential radioactive material is an Ir-192 source; however, it is still unknown if the source remains in the device. The only equipment of this type in Puerto Rico has the serial number 10866 with a radioactive source with serial number D36R2352. The source with serial number D36R2352 would have a remaining calculated activity of 0 mCi if that source is present in the device. The DRH will determine how to proceed after determining if the device still contains a source.
The following is a summary of information obtained from the Puerto Rico Division of Radiological Health (DRH) via phone and email:
On November 4, 2024, the DRH received a report of a metal device with radiation symbols in a vacant lot in the town of Sabana Grande, Puerto Rico. At 1550 EST, on November 4, 2024, the DRH visited the area with the site engineer and found medical equipment, such as ultrasound machines. Upon viewing radiation symbols on one of the devices found, they decided to move the device to an area away from personnel and instructed everyone to stay away from the object.
The DRH proceeded to take background radiation measurements before approaching the device. Photos and radiation measurements of the device were taken. The radiation levels do not exceed background. The radiation symbol was removed on the understanding that, if there was no emission present, it does not pose any risk and should not be labeled. The object is buried in the same place where it was found.
Based on the information and photos provided, the following was determined by the DRH: the device is part of the Elekta microSelectron Digital equipment (brachytherapy equipment for high-dose cancer treatment). The potential radioactive material is an Ir-192 source; however, it is still unknown if the source remains in the device. The only equipment of this type in Puerto Rico has the serial number 10866 with a radioactive source with serial number D36R2352. The source with serial number D36R2352 would have a remaining calculated activity of 0 mCi if that source is present in the device. The DRH will determine how to proceed after determining if the device still contains a source.