Event Notification Report for November 16, 2020
U.S. Nuclear Regulatory Commission
Operations Center
EVENT REPORTS FOR
11/15/2020 - 11/16/2020
Agreement State
Event Number: 55015
Rep Org: IOWA DEPARTMENT OF PUBLIC HEALTH
Licensee: 3M
Region: 3
City: Knoxville State: IA
County:
License #: 0042163FG
Agreement: Y
Docket:
NRC Notified By: Randal Dahlin
HQ OPS Officer: Howie Crouch
Licensee: 3M
Region: 3
City: Knoxville State: IA
County:
License #: 0042163FG
Agreement: Y
Docket:
NRC Notified By: Randal Dahlin
HQ OPS Officer: Howie Crouch
Notification Date: 12/01/2020
Notification Time: 09:55 [ET]
Event Date: 11/16/2020
Event Time: 00:00 [CST]
Last Update Date: 12/08/2020
Notification Time: 09:55 [ET]
Event Date: 11/16/2020
Event Time: 00:00 [CST]
Last Update Date: 12/08/2020
Emergency Class: Non Emergency
10 CFR Section:
Agreement State
10 CFR Section:
Agreement State
Person (Organization):
DICKSON, BILLY (R3DO)
NMSS_EVENTS_NOTIFICATION, (EMAIL)
DICKSON, BILLY (R3DO)
NMSS_EVENTS_NOTIFICATION, (EMAIL)
EN Revision Imported Date: 12/8/2020
EN Revision Text: AGREEMENT STATE REPORT - STUCK OPEN SHUTTER
The following information was obtained from the State of Iowa via email:
"A maintenance technician at the 3M facility in Knoxville, Iowa discovered that a Thermo Fisher Scientific model SULP-77A fixed gauging device containing 661 milliCuries of Krypton-85 had a shutter that was stuck open and would not close. This discovery occurred when the production line was shutdown for routine maintenance. The RSO [Radiation Safety Officer] and backup RSO were notified and the gauge was isolated with caution tape to prevent personnel from getting close to the device. 3M maintenance personnel are authorized to perform shutter repair under the supervision of the RSO or backup RSO by Iowa radioactive materials license number 0042-1-63-FG. The licensee will provide a written follow-up report once repairs have been completed and the cause of the failure identified.
"The licensee had a service provider operating under reciprocity with Iowa onsite November 17, 2020 to troubleshoot and repair the gauge. The root cause of the stuck shutter was a broken shutter return spring. A new shutter operating cylinder with a new return spring was installed and the gauge shutter was tested and found to be operating correctly. To minimize the chance of future shutter closure failures, the shutter operating cylinders will be replaced for all beta gauges of the same model that are currently in use at the site. Cylinder replacement will occur during future planned maintenance activities. These failures are exceedingly rare. This is the first occurrence in more than 20 years of using these gauges. The site is considering implementing a preventative maintenance replacement of these cylinders every 10 years."
Iowa report number: IA200004
EN Revision Text: AGREEMENT STATE REPORT - STUCK OPEN SHUTTER
The following information was obtained from the State of Iowa via email:
"A maintenance technician at the 3M facility in Knoxville, Iowa discovered that a Thermo Fisher Scientific model SULP-77A fixed gauging device containing 661 milliCuries of Krypton-85 had a shutter that was stuck open and would not close. This discovery occurred when the production line was shutdown for routine maintenance. The RSO [Radiation Safety Officer] and backup RSO were notified and the gauge was isolated with caution tape to prevent personnel from getting close to the device. 3M maintenance personnel are authorized to perform shutter repair under the supervision of the RSO or backup RSO by Iowa radioactive materials license number 0042-1-63-FG. The licensee will provide a written follow-up report once repairs have been completed and the cause of the failure identified.
"The licensee had a service provider operating under reciprocity with Iowa onsite November 17, 2020 to troubleshoot and repair the gauge. The root cause of the stuck shutter was a broken shutter return spring. A new shutter operating cylinder with a new return spring was installed and the gauge shutter was tested and found to be operating correctly. To minimize the chance of future shutter closure failures, the shutter operating cylinders will be replaced for all beta gauges of the same model that are currently in use at the site. Cylinder replacement will occur during future planned maintenance activities. These failures are exceedingly rare. This is the first occurrence in more than 20 years of using these gauges. The site is considering implementing a preventative maintenance replacement of these cylinders every 10 years."
Iowa report number: IA200004
Power Reactor
Event Number: 55000
Facility: Limerick
Region: 1 State: PA
Unit: [1] [] []
RX Type: [1] GE-4,[2] GE-4
NRC Notified By: Rachel Heath
HQ OPS Officer: Andrew Waugh
Region: 1 State: PA
Unit: [1] [] []
RX Type: [1] GE-4,[2] GE-4
NRC Notified By: Rachel Heath
HQ OPS Officer: Andrew Waugh
Notification Date: 11/16/2020
Notification Time: 12:13 [ET]
Event Date: 11/16/2020
Event Time: 06:15 [EDT]
Last Update Date: 11/24/2020
Notification Time: 12:13 [ET]
Event Date: 11/16/2020
Event Time: 06:15 [EDT]
Last Update Date: 11/24/2020
Emergency Class: Non Emergency
10 CFR Section:
50.72(b)(3)(v)(D) - Accident Mitigation
10 CFR Section:
50.72(b)(3)(v)(D) - Accident Mitigation
Person (Organization):
CARFANG, ERIN (R1)
CARFANG, ERIN (R1)
| Unit | SCRAM Code | RX Crit | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode |
|---|---|---|---|---|---|---|
| 1 | N | Y | 2 | Startup | 5 | Startup |
EN Revision Imported Date: 11/24/2020
EN Revision Text: HIGH PRESSURE COOLANT INJECTION INOPERABLE
"During normal plant start up on Limerick Unit 1, reactor pressure was raised above 200 psig prior to unisolating the Unit 1 high pressure coolant injection system (HPCI) which remained inoperable. Per TS 3.5.1, HPCI is required to be operable in Mode 2 above 200 psig. HPCI has since been restored to operable."
The NRC Resident Inspector has been notified.
EN Revision Text: HIGH PRESSURE COOLANT INJECTION INOPERABLE
"During normal plant start up on Limerick Unit 1, reactor pressure was raised above 200 psig prior to unisolating the Unit 1 high pressure coolant injection system (HPCI) which remained inoperable. Per TS 3.5.1, HPCI is required to be operable in Mode 2 above 200 psig. HPCI has since been restored to operable."
The NRC Resident Inspector has been notified.
Agreement State
Event Number: 55001
Rep Org: IOWA DEPARTMENT OF PUBLIC HEALTH
Licensee: 3M
Region: 3
City: Knoxville State: IA
County:
License #: 0042163FG
Agreement: Y
Docket:
NRC Notified By: Randal Dahlin
HQ OPS Officer: Thomas Kendzia
Licensee: 3M
Region: 3
City: Knoxville State: IA
County:
License #: 0042163FG
Agreement: Y
Docket:
NRC Notified By: Randal Dahlin
HQ OPS Officer: Thomas Kendzia
Notification Date: 11/16/2020
Notification Time: 14:28 [ET]
Event Date: 11/16/2020
Event Time: 00:00 [CDT]
Last Update Date: 11/16/2020
Notification Time: 14:28 [ET]
Event Date: 11/16/2020
Event Time: 00:00 [CDT]
Last Update Date: 11/16/2020
Emergency Class: Non Emergency
10 CFR Section:
Agreement State
10 CFR Section:
Agreement State
Person (Organization):
KENNETH RIEMER (R3DO)
NMSS_EVENTS_NOTIFICATION (EMAIL)
KENNETH RIEMER (R3DO)
NMSS_EVENTS_NOTIFICATION (EMAIL)
AGREEMENT STATE REPORT - GAUGE SHUTTER STUCK OPEN
The following was received from the Iowa Bureau of Radiological Health via email:
"A maintenance technician at the 3M facility in Knoxville, Iowa discovered that a Thermo Fisher Scientific model SULP-77A fixed gauging device containing 661 milliCuries of krypton-85 had a shutter that was stuck open and would not close. This discovery occurred when the production line was shutdown for routine maintenance. The RSO [Radiation Safety Officer] and backup RSO were notified and the gauge was isolated with caution tape to prevent personnel from getting close to the device. 3M maintenance personnel are authorized to perform shutter repair under the supervision of the RSO or backup RSO by Iowa radioactive materials license number 0042-1-63-FG. The licensee will provide a written follow-up report once repairs have been completed and the cause of the failure identified."
Iowa Event Number IA200004
The following was received from the Iowa Bureau of Radiological Health via email:
"A maintenance technician at the 3M facility in Knoxville, Iowa discovered that a Thermo Fisher Scientific model SULP-77A fixed gauging device containing 661 milliCuries of krypton-85 had a shutter that was stuck open and would not close. This discovery occurred when the production line was shutdown for routine maintenance. The RSO [Radiation Safety Officer] and backup RSO were notified and the gauge was isolated with caution tape to prevent personnel from getting close to the device. 3M maintenance personnel are authorized to perform shutter repair under the supervision of the RSO or backup RSO by Iowa radioactive materials license number 0042-1-63-FG. The licensee will provide a written follow-up report once repairs have been completed and the cause of the failure identified."
Iowa Event Number IA200004
Power Reactor
Event Number: 55002
Facility: Clinton
Region: 3 State: IL
Unit: [1] [] []
RX Type: [1] GE-6
NRC Notified By: James Forman
HQ OPS Officer: Brian Lin
Region: 3 State: IL
Unit: [1] [] []
RX Type: [1] GE-6
NRC Notified By: James Forman
HQ OPS Officer: Brian Lin
Notification Date: 11/17/2020
Notification Time: 03:40 [ET]
Event Date: 11/16/2020
Event Time: 19:18 [CST]
Last Update Date: 11/24/2020
Notification Time: 03:40 [ET]
Event Date: 11/16/2020
Event Time: 19:18 [CST]
Last Update Date: 11/24/2020
Emergency Class: Non Emergency
10 CFR Section:
50.72(b)(3)(v)(D) - Accident Mitigation
10 CFR Section:
50.72(b)(3)(v)(D) - Accident Mitigation
Person (Organization):
KENNETH RIEMER (R3DO)
KENNETH RIEMER (R3DO)
| Unit | SCRAM Code | RX Crit | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode |
|---|---|---|---|---|---|---|
| 1 | N | Y | 98 | Power Operation | 98 | Power Operation |
EN Revision Imported Date: 11/24/2020
EN Revision Text: BOTH TRAINS OF MAIN CONTROL ROOM VENTILATION AND AIR CONDITIONING SYSTEMS INOPERABLE
"At 1918 CST on 11/16/2020, it was discovered both required trains of the Main Control Room Ventilation and Air Conditioning systems were simultaneously inoperable. Due to these inoperabilities, the systems were in a condition that could have prevented the fulfillment of a safety function; therefore, this condition is being reported as an eight-hour, non-emergency notification per 10 CFR 50.72(b)(3)(v).
"Subsequent post-maintenance testing demonstrated that the Division 1 Main Control Room Ventilation system was available at the time of the event and was restored to operable status at 2036 CST on 11/16/2020.
"There was no impact on the health and safety of the public or plant personnel.
"The NRC Resident Inspector has been notified."
EN Revision Text: BOTH TRAINS OF MAIN CONTROL ROOM VENTILATION AND AIR CONDITIONING SYSTEMS INOPERABLE
"At 1918 CST on 11/16/2020, it was discovered both required trains of the Main Control Room Ventilation and Air Conditioning systems were simultaneously inoperable. Due to these inoperabilities, the systems were in a condition that could have prevented the fulfillment of a safety function; therefore, this condition is being reported as an eight-hour, non-emergency notification per 10 CFR 50.72(b)(3)(v).
"Subsequent post-maintenance testing demonstrated that the Division 1 Main Control Room Ventilation system was available at the time of the event and was restored to operable status at 2036 CST on 11/16/2020.
"There was no impact on the health and safety of the public or plant personnel.
"The NRC Resident Inspector has been notified."