Event Notification Report for April 02, 2021
U.S. Nuclear Regulatory Commission
Operations Center
EVENT REPORTS FOR
04/01/2021 - 04/02/2021
Power Reactor
Event Number: 55169
Facility: River Bend
Region: 4 State: LA
Unit: [1] [] []
RX Type: [1] GE-6
NRC Notified By: Kevin Doiron
HQ OPS Officer: Brian P. Smith
Region: 4 State: LA
Unit: [1] [] []
RX Type: [1] GE-6
NRC Notified By: Kevin Doiron
HQ OPS Officer: Brian P. Smith
Notification Date: 04/02/2021
Notification Time: 14:29 [ET]
Event Date: 04/02/2021
Event Time: 10:17 [CDT]
Last Update Date: 04/02/2021
Notification Time: 14:29 [ET]
Event Date: 04/02/2021
Event Time: 10:17 [CDT]
Last Update Date: 04/02/2021
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):
RYAN ALEXANDER (R4DO)
RYAN ALEXANDER (R4DO)
| Unit | SCRAM Code | RX Crit | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode |
|---|---|---|---|---|---|---|
| 1 | A/R | Y | 85 | Power Operation | 0 | Hot Shutdown |
EN Revision Imported Date: 4/30/2021
EN Revision Text: AUTOMATIC REACTOR SCRAM DUE TO TURBINE TRIP
"At 1017 CDT on April 2, 2021, while operating at 85 percent power, River Bend Station experienced an automatic reactor scram caused by a turbine trip signal. The cause of the turbine trip signal is not known at this time and is being investigated. Reactor water level is being maintained by feedwater pumps and reactor pressure is being maintained by turbine bypass valves. The scram was uncomplicated and all plant systems responded as designed.
"This event is being reported under 10 CFR 50.72(b)(2)(iv)(B), as any event or condition that results in actuation of the Reactor Protection System (RPS) when the reactor is critical and 10 CFR 50.72(b)(3)(iv)(A) Specified System Actuation as result of expected post scram level 3 isolations.
"No radiological releases have occurred due to this event from the unit.
"The NRC Resident Inspector has been notified of this event."
EN Revision Text: AUTOMATIC REACTOR SCRAM DUE TO TURBINE TRIP
"At 1017 CDT on April 2, 2021, while operating at 85 percent power, River Bend Station experienced an automatic reactor scram caused by a turbine trip signal. The cause of the turbine trip signal is not known at this time and is being investigated. Reactor water level is being maintained by feedwater pumps and reactor pressure is being maintained by turbine bypass valves. The scram was uncomplicated and all plant systems responded as designed.
"This event is being reported under 10 CFR 50.72(b)(2)(iv)(B), as any event or condition that results in actuation of the Reactor Protection System (RPS) when the reactor is critical and 10 CFR 50.72(b)(3)(iv)(A) Specified System Actuation as result of expected post scram level 3 isolations.
"No radiological releases have occurred due to this event from the unit.
"The NRC Resident Inspector has been notified of this event."
Agreement State
Event Number: 55195
Rep Org: MAINE RADIATION CONTROL PROGRAM
Licensee: Maine Health Medical Center
Region: 1
City: Portland State: ME
County:
License #: ME 05611
Agreement: Y
Docket:
NRC Notified By: Catherine Perham
HQ OPS Officer: Brian P. Smith
Licensee: Maine Health Medical Center
Region: 1
City: Portland State: ME
County:
License #: ME 05611
Agreement: Y
Docket:
NRC Notified By: Catherine Perham
HQ OPS Officer: Brian P. Smith
Notification Date: 04/15/2021
Notification Time: 10:15 [ET]
Event Date: 04/02/2021
Event Time: 12:00 [EDT]
Last Update Date: 04/15/2021
Notification Time: 10:15 [ET]
Event Date: 04/02/2021
Event Time: 12:00 [EDT]
Last Update Date: 04/15/2021
Emergency Class: Non Emergency
10 CFR Section:
Agreement State
10 CFR Section:
Agreement State
Person (Organization):
MARK HENRION (R1DO)
NMSS_EVENTS_NOTIFICATION (EMAIL)
MARK HENRION (R1DO)
NMSS_EVENTS_NOTIFICATION (EMAIL)
EN Revision Imported Date: 5/14/2021
EN Revision Text: AGREEMENT STATE - MEDICAL UNDERDOSE EVENT
The following report was received by the Maine Radiation Control Program via email:
"[The doctor] prescribed a patient 3.60 GBq Y-90 resin microspheres (Sirtex SIR-Spheres) for treatment of hepatocellular carcinoma (HCC). Due to the patient's anatomy, [the doctor] administered the dosage through two separate arteries using Surefire catheters. The two administrations were 0.90 GBq and 2.70 GBq.
"The first dosage was administered successfully, with an estimated 0.87 GBq (97 percent) of the planned 0.90 GBq being deposited within the patient's liver. The second dosage was not administered successfully, with an estimated 1.59 GBq (58.7 percent) of the planned 2.70 GBq being deposited within the patient's liver. This occurred because the catheter became occluded during the administration of Y-90 microspheres.
"Overall, the patient did not receive the full prescribed dose, with an estimated 2.46 GBq (68.3 percent) of the prescribed 3.60 GBq being deposited within the patient's liver. The event occurred on April 2, 2021 around 1200 EDT."
Maine Event Number: ME 21-001
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.
EN Revision Text: AGREEMENT STATE - MEDICAL UNDERDOSE EVENT
The following report was received by the Maine Radiation Control Program via email:
"[The doctor] prescribed a patient 3.60 GBq Y-90 resin microspheres (Sirtex SIR-Spheres) for treatment of hepatocellular carcinoma (HCC). Due to the patient's anatomy, [the doctor] administered the dosage through two separate arteries using Surefire catheters. The two administrations were 0.90 GBq and 2.70 GBq.
"The first dosage was administered successfully, with an estimated 0.87 GBq (97 percent) of the planned 0.90 GBq being deposited within the patient's liver. The second dosage was not administered successfully, with an estimated 1.59 GBq (58.7 percent) of the planned 2.70 GBq being deposited within the patient's liver. This occurred because the catheter became occluded during the administration of Y-90 microspheres.
"Overall, the patient did not receive the full prescribed dose, with an estimated 2.46 GBq (68.3 percent) of the prescribed 3.60 GBq being deposited within the patient's liver. The event occurred on April 2, 2021 around 1200 EDT."
Maine Event Number: ME 21-001
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.