Event Notification Report for December 10, 2021
U.S. Nuclear Regulatory Commission
Operations Center
EVENT REPORTS FOR
12/09/2021 - 12/10/2021
Power Reactor
Event Number: 55641
Facility: Saint Lucie
Region: 2 State: FL
Unit: [1] [] []
RX Type: [1] CE,[2] CE
NRC Notified By: Wess Rexrode
HQ OPS Officer: Lloyd Desotell
Region: 2 State: FL
Unit: [1] [] []
RX Type: [1] CE,[2] CE
NRC Notified By: Wess Rexrode
HQ OPS Officer: Lloyd Desotell
Notification Date: 12/10/2021
Notification Time: 13:35 [ET]
Event Date: 12/10/2021
Event Time: 10:24 [EST]
Last Update Date: 12/10/2021
Notification Time: 13:35 [ET]
Event Date: 12/10/2021
Event Time: 10:24 [EST]
Last Update Date: 12/10/2021
Emergency Class: Non Emergency
10 CFR Section:
50.72(b)(2)(iv)(B) - RPS Actuation - Critical
10 CFR Section:
50.72(b)(2)(iv)(B) - RPS Actuation - Critical
Person (Organization):
Miller, Mark (R2)
Miller, Mark (R2)
| Unit | SCRAM Code | RX Crit | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode |
|---|---|---|---|---|---|---|
| 1 | M/R | Y | 100 | Power Operation | 0 | Hot Standby |
EN Revision Imported Date: 1/10/2022
EN Revision Text: MANUAL REACTOR TRIP
"On 12/10/2021, at 1024 EST, with Unit 1 at 100 percent power, the reactor was manually tripped due to lowering level in the steam generators. All systems responded as expected following the trip. The reactor is currently stable in Mode 3 and operators restored steam generator level utilizing main feedwater. The cause of the reduction in feedwater flow is under investigation.
"St. Lucie Unit 2 was not affected and remains at 100 percent power.
"This event is being reported pursuant to 10 CFR 50.72(b)(2)(iv)(B) for the reactor trip.
"The NRC Resident Inspector has been notified."
All rods inserted into the core during the trip. The plant is in its normal shutdown electrical lineup. Decay heat is being maintained by steam discharge to the main condenser using the turbine bypass valves.
EN Revision Text: MANUAL REACTOR TRIP
"On 12/10/2021, at 1024 EST, with Unit 1 at 100 percent power, the reactor was manually tripped due to lowering level in the steam generators. All systems responded as expected following the trip. The reactor is currently stable in Mode 3 and operators restored steam generator level utilizing main feedwater. The cause of the reduction in feedwater flow is under investigation.
"St. Lucie Unit 2 was not affected and remains at 100 percent power.
"This event is being reported pursuant to 10 CFR 50.72(b)(2)(iv)(B) for the reactor trip.
"The NRC Resident Inspector has been notified."
All rods inserted into the core during the trip. The plant is in its normal shutdown electrical lineup. Decay heat is being maintained by steam discharge to the main condenser using the turbine bypass valves.
Power Reactor
Event Number: 55638
Facility: Oconee
Region: 2 State: SC
Unit: [2] [] []
RX Type: [1] B&W-L-LP,[2] B&W-L-LP,[3] B&W-L-LP
NRC Notified By: Brian Morris
HQ OPS Officer: Howie Crouch
Region: 2 State: SC
Unit: [2] [] []
RX Type: [1] B&W-L-LP,[2] B&W-L-LP,[3] B&W-L-LP
NRC Notified By: Brian Morris
HQ OPS Officer: Howie Crouch
Notification Date: 12/10/2021
Notification Time: 03:54 [ET]
Event Date: 12/10/2021
Event Time: 00:49 [EST]
Last Update Date: 12/10/2021
Notification Time: 03:54 [ET]
Event Date: 12/10/2021
Event Time: 00:49 [EST]
Last Update Date: 12/10/2021
Emergency Class: Non Emergency
10 CFR Section:
50.72(b)(2)(iv)(B) - RPS Actuation - Critical
10 CFR Section:
50.72(b)(2)(iv)(B) - RPS Actuation - Critical
Person (Organization):
Miller, Mark (R2)
Miller, Mark (R2)
| Unit | SCRAM Code | RX Crit | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode |
|---|---|---|---|---|---|---|
| 2 | A/R | Y | 73 | Power Operation | 0 | Hot Standby |
EN Revision Imported Date: 1/10/2022
EN Revision Text: AUTOMATIC REACTOR TRIP
"At 0049 EST, on December 10, 2021, with Unit 2 in Mode 1 at 73 percent power, the reactor automatically tripped due to an unknown condition. The trip was not complex, with all systems responding normally post-trip.
"Operations responded and stabilized the plant. Decay heat is being maintained by discharge steam to the main condenser using the turbine bypass valves. Units 1 and 3 are not affected. The cause of the trip is under investigation.
"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).
"There was no impact to the health and safety of the public or plant personnel. The NRC Resident Inspector has been notified."
All rods inserted into the core during the trip. The plant is in its normal shutdown electrical lineup maintaining normal operating pressure and temperature.
EN Revision Text: AUTOMATIC REACTOR TRIP
"At 0049 EST, on December 10, 2021, with Unit 2 in Mode 1 at 73 percent power, the reactor automatically tripped due to an unknown condition. The trip was not complex, with all systems responding normally post-trip.
"Operations responded and stabilized the plant. Decay heat is being maintained by discharge steam to the main condenser using the turbine bypass valves. Units 1 and 3 are not affected. The cause of the trip is under investigation.
"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).
"There was no impact to the health and safety of the public or plant personnel. The NRC Resident Inspector has been notified."
All rods inserted into the core during the trip. The plant is in its normal shutdown electrical lineup maintaining normal operating pressure and temperature.
Non-Agreement State
Event Number: 55702
Rep Org: Curium US LLC
Licensee: Curium US LLC
Region: 3
City: Maryland Heights State: MO
County:
License #: 24-04206-01
Agreement: N
Docket:
NRC Notified By: Scott Surovi
HQ OPS Officer: Ossy Font
Licensee: Curium US LLC
Region: 3
City: Maryland Heights State: MO
County:
License #: 24-04206-01
Agreement: N
Docket:
NRC Notified By: Scott Surovi
HQ OPS Officer: Ossy Font
Notification Date: 01/12/2022
Notification Time: 09:44 [ET]
Event Date: 12/10/2021
Event Time: 00:00 [CST]
Last Update Date: 01/12/2022
Notification Time: 09:44 [ET]
Event Date: 12/10/2021
Event Time: 00:00 [CST]
Last Update Date: 01/12/2022
Emergency Class: Non Emergency
10 CFR Section:
20.2201(a)(1)(ii) - Lost/Stolen LNM>10x
10 CFR Section:
20.2201(a)(1)(ii) - Lost/Stolen LNM>10x
Person (Organization):
Skokowski, Richard (R3)
NMSS_Events_Notification, (EMAIL)
ILTAB, (EMAIL)
Eve, Elise (R1DO)
Skokowski, Richard (R3)
NMSS_Events_Notification, (EMAIL)
ILTAB, (EMAIL)
Eve, Elise (R1DO)
EN Revision Imported Date: 2/11/2022
EN Revision Text: NON-AGREEMENT STATE REPORT - LOST PACKAGES IN TRANSIT
The following is a summary of information received from the licensee via telephonic communication:
On December 10, 2021, 15 packages were scheduled to be delivered by a common carrier to multiple locations in New York. It was then discovered that two packages were missing. The packages contained 44 mCi of Ga-67 and 7.2 mCi of Cu-64, both in liquid form and used for nuclear medicine diagnostic testing. The carrier investigated and searched for the packages but was unable to locate them and they were declared lost on Dec. 17, 2021.
The licensee will notify the Region III office and the New York Department of Health.
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
EN Revision Text: NON-AGREEMENT STATE REPORT - LOST PACKAGES IN TRANSIT
The following is a summary of information received from the licensee via telephonic communication:
On December 10, 2021, 15 packages were scheduled to be delivered by a common carrier to multiple locations in New York. It was then discovered that two packages were missing. The packages contained 44 mCi of Ga-67 and 7.2 mCi of Cu-64, both in liquid form and used for nuclear medicine diagnostic testing. The carrier investigated and searched for the packages but was unable to locate them and they were declared lost on Dec. 17, 2021.
The licensee will notify the Region III office and the New York Department of Health.
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