Event Notification Report for September 18, 2023
U.S. Nuclear Regulatory Commission
Operations Center
EVENT REPORTS FOR
09/17/2023 - 09/18/2023
Agreement State
Event Number: 56746
Rep Org: Colorado Dept of Health
Licensee: North Colorado Medical Center
Region: 4
City: Greeley State: CO
County:
License #: CO 263-01
Agreement: Y
Docket:
NRC Notified By: Tim Thorvaldson
HQ OPS Officer: John Russell
Licensee: North Colorado Medical Center
Region: 4
City: Greeley State: CO
County:
License #: CO 263-01
Agreement: Y
Docket:
NRC Notified By: Tim Thorvaldson
HQ OPS Officer: John Russell
Notification Date: 09/19/2023
Notification Time: 13:03 [ET]
Event Date: 09/18/2023
Event Time: 10:00 [MDT]
Last Update Date: 09/19/2023
Notification Time: 13:03 [ET]
Event Date: 09/18/2023
Event Time: 10:00 [MDT]
Last Update Date: 09/19/2023
Emergency Class: Non Emergency
10 CFR Section:
Agreement State
10 CFR Section:
Agreement State
Person (Organization):
Groom, Jeremy (R4DO)
NMSS_EVENTS_NOTIFICATION (EMAIL)
Groom, Jeremy (R4DO)
NMSS_EVENTS_NOTIFICATION (EMAIL)
AGREEMENT STATE REPORT - UNDERDOSE
The following information was received from the Colorado Department of Public Health and Environment via email:
"After completing a Yttrium-90 TheraSpheres treatment, [medical personnel] were measuring the residual Yttrium-90 TheraSpheres and found that the administered dose delivered to the patient was only 313.2 Gray and the prescribed dose was 407 Gray. The total dose delivered was only 77 percent of the prescribed dose. The department is investigating the cause of the event."
Colorado Event Report ID: CO 230032
A Medical Event may indicate potential problems in a medical facility's use of radioactive materials. It does not necessarily result in harm to the patient.
The following information was received from the Colorado Department of Public Health and Environment via email:
"After completing a Yttrium-90 TheraSpheres treatment, [medical personnel] were measuring the residual Yttrium-90 TheraSpheres and found that the administered dose delivered to the patient was only 313.2 Gray and the prescribed dose was 407 Gray. The total dose delivered was only 77 percent of the prescribed dose. The department is investigating the cause of the event."
Colorado Event Report ID: CO 230032
A Medical Event may indicate potential problems in a medical facility's use of radioactive materials. It does not necessarily result in harm to the patient.
Power Reactor
Event Number: 56743
Facility: North Anna
Region: 2 State: VA
Unit: [1] [2] []
RX Type: [1] W-3-LP,[2] W-3-LP,[3] M-4-LP
NRC Notified By: Robert Page
HQ OPS Officer: Kerby Scales
Region: 2 State: VA
Unit: [1] [2] []
RX Type: [1] W-3-LP,[2] W-3-LP,[3] M-4-LP
NRC Notified By: Robert Page
HQ OPS Officer: Kerby Scales
Notification Date: 09/18/2023
Notification Time: 14:48 [ET]
Event Date: 09/18/2023
Event Time: 14:20 [EDT]
Last Update Date: 09/18/2023
Notification Time: 14:48 [ET]
Event Date: 09/18/2023
Event Time: 14:20 [EDT]
Last Update Date: 09/18/2023
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):
Miller, Mark (R2DO)
Miller, Mark (R2DO)
| Unit | SCRAM Code | RX Crit | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode |
|---|---|---|---|---|---|---|
| 1 | N | N | 100 | Power Operation | 100 | Power Operation |
| 2 | N | Y | 0 | Refueling | 0 | Refueling |
EN Revision Imported Date: 9/20/2023
EN Revision Text: OFFSITE NOTIFICATION
The following information was provided by the licensee via email:
"On 09/17/2023 at 2218 [EDT], Operations identified that the bearing cooling (BC) tower basin was overflowing. Earlier in the day, the BC tower was isolated as part of a planned maintenance evolution and the overflow condition was due to isolation valve leak-by. At 2255, the leak-by was corrected and stopped the overflow. Approximately 75 gallons may have been discharged to the lake from the overflow.
"The BC water was sampled by Chemistry and all chemical parameters were within VP DES (Virginia Pollutant Discharge Elimination System) limits.
"At 1420 on 09/18/23, a 24-hour notification was made to the Virginia Department of Environmental Quality (DEQ) in accordance with the North Anna VPDES permit.
"This issue is being reported per 10CFR50.72 (b)(2)(xi) due to the notification of other government agency."
The NRC Resident Inspector was notified.
EN Revision Text: OFFSITE NOTIFICATION
The following information was provided by the licensee via email:
"On 09/17/2023 at 2218 [EDT], Operations identified that the bearing cooling (BC) tower basin was overflowing. Earlier in the day, the BC tower was isolated as part of a planned maintenance evolution and the overflow condition was due to isolation valve leak-by. At 2255, the leak-by was corrected and stopped the overflow. Approximately 75 gallons may have been discharged to the lake from the overflow.
"The BC water was sampled by Chemistry and all chemical parameters were within VP DES (Virginia Pollutant Discharge Elimination System) limits.
"At 1420 on 09/18/23, a 24-hour notification was made to the Virginia Department of Environmental Quality (DEQ) in accordance with the North Anna VPDES permit.
"This issue is being reported per 10CFR50.72 (b)(2)(xi) due to the notification of other government agency."
The NRC Resident Inspector was notified.
Power Reactor
Event Number: 56745
Facility: Clinton
Region: 3 State: IL
Unit: [1] [] []
RX Type: [1] GE-6
NRC Notified By: Justin Majernik
HQ OPS Officer: Karen Cotton-Gross
Region: 3 State: IL
Unit: [1] [] []
RX Type: [1] GE-6
NRC Notified By: Justin Majernik
HQ OPS Officer: Karen Cotton-Gross
Notification Date: 09/18/2023
Notification Time: 23:26 [ET]
Event Date: 09/18/2023
Event Time: 20:07 [CDT]
Last Update Date: 09/19/2023
Notification Time: 23:26 [ET]
Event Date: 09/18/2023
Event Time: 20:07 [CDT]
Last Update Date: 09/19/2023
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):
Szwarc, Dariusz (R3DO)
Szwarc, Dariusz (R3DO)
| Unit | SCRAM Code | RX Crit | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode |
|---|---|---|---|---|---|---|
| 1 | N | Y | 0 | Refueling | 0 | Refueling |
OFFSITE NOTIFICATION
The following information was provided by the licensee via email:
"On 9/18/2023 at 2007 CDT, Clinton reported to the Illinois Emergency Management Agency, National Response Center and DeWitt County a hazardous substance release of 1300 gallons of Sodium Bisulphite. The release was at the site's flume discharge building due to a crack on a fitting inside the building. This release did not exceed any NRC regulations or reporting criteria. This notification is being made solely as a four-hour, non-emergency notification for a Notification of Other Government Agency. This event is reportable in accordance with 10 CFR 50.72(b)(2)(xi).
"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 email:
"On 9/18/2023 at 2007 CDT, Clinton reported to the Illinois Emergency Management Agency, National Response Center and DeWitt County a hazardous substance release of 1300 gallons of Sodium Bisulphite. The release was at the site's flume discharge building due to a crack on a fitting inside the building. This release did not exceed any NRC regulations or reporting criteria. This notification is being made solely as a four-hour, non-emergency notification for a Notification of Other Government Agency. This event is reportable in accordance with 10 CFR 50.72(b)(2)(xi).
"There was no impact on the health and safety of the public or plant personnel. The NRC Resident Inspector has been notified."
Fuel Cycle Facility
Event Number: 56747
Facility: American Centrifuge Plant
Region: 2 State: OH
Unit: [] [] []
RX Type: Uranium Enrichment Facility
Comments:
NRC Notified By: Bryan Miller
HQ OPS Officer: John Russell
Region: 2 State: OH
Unit: [] [] []
RX Type: Uranium Enrichment Facility
Comments:
NRC Notified By: Bryan Miller
HQ OPS Officer: John Russell
Notification Date: 09/19/2023
Notification Time: 15:56 [ET]
Event Date: 09/18/2023
Event Time: 00:00 [EDT]
Last Update Date: 09/19/2023
Notification Time: 15:56 [ET]
Event Date: 09/18/2023
Event Time: 00:00 [EDT]
Last Update Date: 09/19/2023
Emergency Class: Non Emergency
10 CFR Section:
PART 70 APP A (c) - Offsite Notification/News Rel
10 CFR Section:
PART 70 APP A (c) - Offsite Notification/News Rel
Person (Organization):
Miller, Mark (R2DO)
NMSS_EVENTS_NOTIFICATION (EMAIL)
Miller, Mark (R2DO)
NMSS_EVENTS_NOTIFICATION (EMAIL)
CONCURRENT REPORT - HIGH CHLORINE LEVEL IN OUTFALL POND
The following information was provided by the licensee via email, facsimile, and phone:
"The Ohio Environmental Protection Agency was notified at approximately 1402 EDT on 09-19-2023, that the [National Pollutant Database] limit for chlorine at Outfall 012 (X-2230M Holding Pond) of 0.019 mg/L was exceeded on 09-18-2023, with a result of 0.109 mg/L with the elevated level being confirmed by a sample on the morning of 09-19-2023.
"Centrus American Centrifuge Operating is currently investigating to determine the cause of the exceedance."
NRC Region 2 was notified.
Centrus event number: CN 11437.
The following information was provided by the licensee via email, facsimile, and phone:
"The Ohio Environmental Protection Agency was notified at approximately 1402 EDT on 09-19-2023, that the [National Pollutant Database] limit for chlorine at Outfall 012 (X-2230M Holding Pond) of 0.019 mg/L was exceeded on 09-18-2023, with a result of 0.109 mg/L with the elevated level being confirmed by a sample on the morning of 09-19-2023.
"Centrus American Centrifuge Operating is currently investigating to determine the cause of the exceedance."
NRC Region 2 was notified.
Centrus event number: CN 11437.