Event Notification Report for March 17, 2021
U.S. Nuclear Regulatory Commission
Operations Center
EVENT REPORTS FOR
03/16/2021 - 03/17/2021
Agreement State
Event Number: 55131
Rep Org: ALABAMA RADIATION CONTROL
Licensee: Birmingham Water Works
Region: 1
City: Birmingham State: AL
County:
License #: 92GL
Agreement: Y
Docket:
NRC Notified By: Cason Coan
HQ OPS Officer: Brian Lin
Licensee: Birmingham Water Works
Region: 1
City: Birmingham State: AL
County:
License #: 92GL
Agreement: Y
Docket:
NRC Notified By: Cason Coan
HQ OPS Officer: Brian Lin
Notification Date: 03/09/2021
Notification Time: 16:55 [ET]
Event Date: 01/12/2021
Event Time: 00:00 [CST]
Last Update Date: 03/09/2021
Notification Time: 16:55 [ET]
Event Date: 01/12/2021
Event Time: 00:00 [CST]
Last Update Date: 03/09/2021
Emergency Class: Non Emergency
10 CFR Section:
Agreement State
10 CFR Section:
Agreement State
Person (Organization):
GRAY, MEL (R1)
NMSS_EVENTS_NOTIFICATION, (EMAIL)
ILTAB, (EMAIL)
GRAY, MEL (R1)
NMSS_EVENTS_NOTIFICATION, (EMAIL)
ILTAB, (EMAIL)
AGREEMENT STATE REPORT - LOST SOURCES
The following information was received from the State of Alabama via email:
"During inspection of general license registrant Birmingham Water Works on January 12, 2021, the inspector and representatives were unable to physically locate approximately 9 Perkin-Elmer general license devices. The inspector pursued follow-up investigation with representatives of Birmingham Water Works, Agilent Technologies and Perkin-Elmer after the inspection. The inspector has not received follow-up information on receipt or transfer of these devices. The location(s) of these devices are unknown at this time. Alabama Radiation Control is continuing to investigate this matter. The devices are listed as Perkin-Elmer model N610-0133 s/ns 4743, 2679, 2680, 2681, 2808, 2491, 1662, 4743 and Perkin-Elmer model 03300119 s/n 3898. All 9 are equipped with Ni-63 sources, nominal activity 15 millicuries."
Alabama Event.: 21-07
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
The following information was received from the State of Alabama via email:
"During inspection of general license registrant Birmingham Water Works on January 12, 2021, the inspector and representatives were unable to physically locate approximately 9 Perkin-Elmer general license devices. The inspector pursued follow-up investigation with representatives of Birmingham Water Works, Agilent Technologies and Perkin-Elmer after the inspection. The inspector has not received follow-up information on receipt or transfer of these devices. The location(s) of these devices are unknown at this time. Alabama Radiation Control is continuing to investigate this matter. The devices are listed as Perkin-Elmer model N610-0133 s/ns 4743, 2679, 2680, 2681, 2808, 2491, 1662, 4743 and Perkin-Elmer model 03300119 s/n 3898. All 9 are equipped with Ni-63 sources, nominal activity 15 millicuries."
Alabama Event.: 21-07
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: 55143
Facility: Watts Bar
Region: 2 State: TN
Unit: [2] [] []
RX Type: [1] W-4-LP,[2] W-4-LP
NRC Notified By: Robert Collins
HQ OPS Officer: Thomas Kendzia
Region: 2 State: TN
Unit: [2] [] []
RX Type: [1] W-4-LP,[2] W-4-LP
NRC Notified By: Robert Collins
HQ OPS Officer: Thomas Kendzia
Notification Date: 03/17/2021
Notification Time: 12:59 [ET]
Event Date: 03/17/2021
Event Time: 10:04 [EST]
Last Update Date: 03/17/2021
Notification Time: 12:59 [ET]
Event Date: 03/17/2021
Event Time: 10:04 [EST]
Last Update Date: 03/17/2021
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):
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 | 90 | Power Operation | 0 | Hot Standby |
AUTOMATIC REACTOR TRIP
"At 1004 EDT on March 17, 2021, with Unit 2 in Mode 1 at 90 percent power, the reactor automatically tripped due to a main turbine trip. The trip was not complex, with all systems responding normally post-trip.
"Operations responded and stabilized the plant. Decay heat is being removed by the Auxiliary Feedwater and Steam Dump Systems. Unit 1 is not affected.
"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). The expected actuation of the Auxiliary Feedwater System (an engineered safety feature) is being reported as an eight hour report under 10 CFR 50.72 (b)(3)(iv)(A).
"There was no impact on the health and safety of the public or plant personnel. The NRC Resident Inspector has been notified."
All controls rods fully inserted and the electrical system is in normal shutdown alignment. The cause of the turbine trip is being investigated.
"At 1004 EDT on March 17, 2021, with Unit 2 in Mode 1 at 90 percent power, the reactor automatically tripped due to a main turbine trip. The trip was not complex, with all systems responding normally post-trip.
"Operations responded and stabilized the plant. Decay heat is being removed by the Auxiliary Feedwater and Steam Dump Systems. Unit 1 is not affected.
"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). The expected actuation of the Auxiliary Feedwater System (an engineered safety feature) is being reported as an eight hour report under 10 CFR 50.72 (b)(3)(iv)(A).
"There was no impact on the health and safety of the public or plant personnel. The NRC Resident Inspector has been notified."
All controls rods fully inserted and the electrical system is in normal shutdown alignment. The cause of the turbine trip is being investigated.