Event Notification Report for March 31, 2023
U.S. Nuclear Regulatory Commission
Operations Center
EVENT REPORTS FOR
03/30/2023 - 03/31/2023
Power Reactor
Event Number: 56446
Facility: Hatch
Region: 2 State: GA
Unit: [2] [] []
RX Type: [1] GE-4,[2] GE-4
NRC Notified By: John Long
HQ OPS Officer: Sam Colvard
Region: 2 State: GA
Unit: [2] [] []
RX Type: [1] GE-4,[2] GE-4
NRC Notified By: John Long
HQ OPS Officer: Sam Colvard
Notification Date: 03/31/2023
Notification Time: 15:54 [ET]
Event Date: 03/31/2023
Event Time: 14:32 [EDT]
Last Update Date: 03/31/2023
Notification Time: 15:54 [ET]
Event Date: 03/31/2023
Event Time: 14:32 [EDT]
Last Update Date: 03/31/2023
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 (R2DO)
Miller, Mark (R2DO)
| Unit | SCRAM Code | RX Crit | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode |
|---|---|---|---|---|---|---|
| 2 | M/R | Y | 97 | Power Operation | 0 | Hot Standby |
MANUAL REACTOR SCRAM AND AUTOMATIC ACTUATION OF CONTAINMENT ISOLATION VALVES (CIVs)
The following information was provided by the licensee via email:
"At 1432 EDT on 03/31/23, with Unit 2 in mode 1 at 97 percent power, the reactor was manually tripped due to a loss of both recirculation pumps. The cause of the recirculation pump trips is under investigation. Additionally, closure of CIVs in multiple systems occurred during the trip as a result of reaching the actuation setpoint on reactor water level as designed. The trip was not complex, with all systems responding normally post-trip.
"Operations responded and stabilized the plant. Reactor water level is being maintained via condensate / feedwater. Decay heat is being removed by discharging steam to the main condenser using the turbine bypass valves. 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). It is also reportable under 10 CFR 50.72(b)(3)(iv)(A) as an event that results in a valid actuation of CIVs.
"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:
"At 1432 EDT on 03/31/23, with Unit 2 in mode 1 at 97 percent power, the reactor was manually tripped due to a loss of both recirculation pumps. The cause of the recirculation pump trips is under investigation. Additionally, closure of CIVs in multiple systems occurred during the trip as a result of reaching the actuation setpoint on reactor water level as designed. The trip was not complex, with all systems responding normally post-trip.
"Operations responded and stabilized the plant. Reactor water level is being maintained via condensate / feedwater. Decay heat is being removed by discharging steam to the main condenser using the turbine bypass valves. 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). It is also reportable under 10 CFR 50.72(b)(3)(iv)(A) as an event that results in a valid actuation of CIVs.
"There was no impact on the health and safety of the public or plant personnel. The NRC Resident Inspector has been notified."
Agreement State
Event Number: 56449
Rep Org: Florida Bureau of Radiation Control
Licensee: QC Laboratories, Inc.
Region: 1
City: Hollywood State: FL
County:
License #: 3955-4
Agreement: Y
Docket:
NRC Notified By: Mark Seidensticker
HQ OPS Officer: Bill Gott
Licensee: QC Laboratories, Inc.
Region: 1
City: Hollywood State: FL
County:
License #: 3955-4
Agreement: Y
Docket:
NRC Notified By: Mark Seidensticker
HQ OPS Officer: Bill Gott
Notification Date: 03/31/2023
Notification Time: 16:54 [ET]
Event Date: 03/31/2023
Event Time: 00:00 [EDT]
Last Update Date: 03/31/2023
Notification Time: 16:54 [ET]
Event Date: 03/31/2023
Event Time: 00:00 [EDT]
Last Update Date: 03/31/2023
Emergency Class: Non Emergency
10 CFR Section:
Agreement State
10 CFR Section:
Agreement State
Person (Organization):
Schroeder, Dan (R1DO)
NMSS_EVENTS_NOTIFICATION (EMAIL)
MacDonald, Mark (ILTAB)
Schroeder, Dan (R1DO)
NMSS_EVENTS_NOTIFICATION (EMAIL)
MacDonald, Mark (ILTAB)
AGREEMENT STATE REPORT - RADIOACTIVE SOURCE LOST IN SHIPMENT
The following information was provided by the Florida Bureau of Radiation Control (BRC) via email:
"BRC Tallahassee received notification this afternoon from QC Laboratories, Inc. that tracking has been lost on a 16.8 curie (below Cat 2) Iridium 192 sealed source. The source was shipped out of country (St. Thomas, Virgin Islands) and was on return shipment. Per [the common carrier]: 'Our records reflect that this package was tendered to [the common carrier] on March 16 with the expectation of delivery by 1030 EDT on March 17, barring delays in Customs. These records indicate that this shipment arrived at our port of entry at our central sorting facility in Memphis on March 17 and went into the customs clearance process. After Customs delays resulting from clearance paperwork issues, the paperwork was resolved. Customs clearance was completed on March 27, and the package was removed from the cage; however, we are unable to verify its status past that point.'"
Florida Incident Number: FL23-045
THIS MATERIAL EVENT CONTAINS A 'Category 3' LEVEL OF RADIOACTIVE MATERIAL
Category 3 sources, if not safely managed or securely protected, could cause permanent injury to a person who handled them, or were otherwise in contact with them, for some hours. It could possibly - although it is unlikely - be fatal to be close to this amount of unshielded radioactive material for a period of days to weeks. These sources are typically used in practices such as fixed industrial gauges involving high activity sources (for example: level gauges, dredger gauges, conveyor gauges and spinning pipe gauges) and well logging. For additional information go to http://www-pub.iaea.org/MTCD/publications/PDF/Pub1227_web.pdf
The following information was provided by the Florida Bureau of Radiation Control (BRC) via email:
"BRC Tallahassee received notification this afternoon from QC Laboratories, Inc. that tracking has been lost on a 16.8 curie (below Cat 2) Iridium 192 sealed source. The source was shipped out of country (St. Thomas, Virgin Islands) and was on return shipment. Per [the common carrier]: 'Our records reflect that this package was tendered to [the common carrier] on March 16 with the expectation of delivery by 1030 EDT on March 17, barring delays in Customs. These records indicate that this shipment arrived at our port of entry at our central sorting facility in Memphis on March 17 and went into the customs clearance process. After Customs delays resulting from clearance paperwork issues, the paperwork was resolved. Customs clearance was completed on March 27, and the package was removed from the cage; however, we are unable to verify its status past that point.'"
Florida Incident Number: FL23-045
THIS MATERIAL EVENT CONTAINS A 'Category 3' LEVEL OF RADIOACTIVE MATERIAL
Category 3 sources, if not safely managed or securely protected, could cause permanent injury to a person who handled them, or were otherwise in contact with them, for some hours. It could possibly - although it is unlikely - be fatal to be close to this amount of unshielded radioactive material for a period of days to weeks. These sources are typically used in practices such as fixed industrial gauges involving high activity sources (for example: level gauges, dredger gauges, conveyor gauges and spinning pipe gauges) and well logging. For additional information go to http://www-pub.iaea.org/MTCD/publications/PDF/Pub1227_web.pdf
Agreement State
Event Number: 56517
Rep Org: SC Dept of Health & Env Control
Licensee: Suominen Nonwovens
Region: 1
City: Bethune State: SC
County:
License #:
Agreement: Y
Docket:
NRC Notified By: Korina Koci
HQ OPS Officer: Bill Gott
Licensee: Suominen Nonwovens
Region: 1
City: Bethune State: SC
County:
License #:
Agreement: Y
Docket:
NRC Notified By: Korina Koci
HQ OPS Officer: Bill Gott
Notification Date: 05/12/2023
Notification Time: 10:07 [ET]
Event Date: 03/31/2023
Event Time: 00:00 [EDT]
Last Update Date: 05/12/2023
Notification Time: 10:07 [ET]
Event Date: 03/31/2023
Event Time: 00:00 [EDT]
Last Update Date: 05/12/2023
Emergency Class: Non Emergency
10 CFR Section:
Agreement State
10 CFR Section:
Agreement State
Person (Organization):
Deboer, Joseph (R1DO)
NMSS_EVENTS_NOTIFICATION (EMAIL)
Deboer, Joseph (R1DO)
NMSS_EVENTS_NOTIFICATION (EMAIL)
AGREEMENT STATE REPORT - STUCK SHUTTER
The following information was provided by the South Carolina Department of Health and Environmental Control (the Department) via email:
"The licensee [Bethune Nonwovens, Inc., d/b/a Suominen Nonwovens] notified the Department in writing on April 21, 2023, that a generally licensed fixed gauging device had a failed shutter which had been repaired by the manufacturer on April 3, 2023. The licensee discovered that the event occurred on March 31, 2023, and reported that upon discovery of the stuck shutter, that the manufacturer arrived on site on the same day and placed the device out of service until repaired. The event involved a Mahlo fixed gauging device (model number: 11-200933, serial number 11-011985-AH-5783), which housed an Isotope Product Laboratories, krypton-85 sealed source (model number KAC.D3, serial number: AH-5783), with an activity of 9.62 GBq (260 mCi). The licensee reported that the cause of this equipment failure was attributed to corrosion around the shutter assembly.
"On May 2, 2023, a Department inspector was dispatched to the facility to conduct an on-site investigation. All dose measurements were consistent with the Sealed Source Device Registry certificate for the device. Based on the resulting dose rate surveys conducted by the Department and the manufacturer, interviews with licensee representatives, and the removal of the device from service at the time that the failure was discovered, it does not appear that any radiation exposure to workers, or any other individual members of the public has occurred.
"This event is considered closed."
Internal ID number: SC230009
The following information was provided by the South Carolina Department of Health and Environmental Control (the Department) via email:
"The licensee [Bethune Nonwovens, Inc., d/b/a Suominen Nonwovens] notified the Department in writing on April 21, 2023, that a generally licensed fixed gauging device had a failed shutter which had been repaired by the manufacturer on April 3, 2023. The licensee discovered that the event occurred on March 31, 2023, and reported that upon discovery of the stuck shutter, that the manufacturer arrived on site on the same day and placed the device out of service until repaired. The event involved a Mahlo fixed gauging device (model number: 11-200933, serial number 11-011985-AH-5783), which housed an Isotope Product Laboratories, krypton-85 sealed source (model number KAC.D3, serial number: AH-5783), with an activity of 9.62 GBq (260 mCi). The licensee reported that the cause of this equipment failure was attributed to corrosion around the shutter assembly.
"On May 2, 2023, a Department inspector was dispatched to the facility to conduct an on-site investigation. All dose measurements were consistent with the Sealed Source Device Registry certificate for the device. Based on the resulting dose rate surveys conducted by the Department and the manufacturer, interviews with licensee representatives, and the removal of the device from service at the time that the failure was discovered, it does not appear that any radiation exposure to workers, or any other individual members of the public has occurred.
"This event is considered closed."
Internal ID number: SC230009