Event Notification Report for April 20, 2021
U.S. Nuclear Regulatory Commission
Operations Center
EVENT REPORTS FOR
04/19/2021 - 04/20/2021
Agreement State
Event Number: 55203
Rep Org: ALABAMA RADIATION CONTROL
Licensee: Building and Earth Sciences, Inc
Region: 1
City: Westover State: AL
County:
License #: 1266
Agreement: Y
Docket:
NRC Notified By: Cason Coan
HQ OPS Officer: Brian Lin
Licensee: Building and Earth Sciences, Inc
Region: 1
City: Westover State: AL
County:
License #: 1266
Agreement: Y
Docket:
NRC Notified By: Cason Coan
HQ OPS Officer: Brian Lin
Notification Date: 04/21/2021
Notification Time: 10:13 [ET]
Event Date: 04/20/2021
Event Time: 11:30 [CDT]
Last Update Date: 05/19/2021
Notification Time: 10:13 [ET]
Event Date: 04/20/2021
Event Time: 11:30 [CDT]
Last Update Date: 05/19/2021
Emergency Class: Non Emergency
10 CFR Section:
Agreement State
10 CFR Section:
Agreement State
Person (Organization):
ARNER, FRANK (R1DO)
NMSS_EVENTS_NOTIFICATION, (EMAIL)
ARNER, FRANK (R1DO)
NMSS_EVENTS_NOTIFICATION, (EMAIL)
EN Revision Imported Date: 6/17/2021
EN Revision Text: AGREEMENT STATE REPORT - DAMAGED MOISTURE DENSITY GAUGE
The following information was received from the Alabama Department of Public Health Office of Radiation Control via email:
"On April 20, 2021 about 1130 [EDT], Alabama licensee Building and Earth Sciences, Inc. (license number 1266) called to report that a moisture density gauge had been run over by a compactor while at a temporary job site. The licensee's representative stated that the gauge was in several pieces, and the source rod/probe could not be retracted into the safe shielded position. The licensee collected a leak test once the gauge was safely stored; exposure measurements from the leak test envelope were less than or equal to background. The gauge is a Troxler 3430 s/n 32716, with 9 milliCuries Cs-137 and 44 milliCuries Am-241:Be. The Agency is waiting on the licensee's report of this matter. More information to follow."
Alabama Report No.: 21-12
* * * UPDATE ON 5/19/21 AT 1109 EDT FROM MYRON K. RILEY TO LLOYD DESOTELL * * *
The following is a summary of information that was received from the Alabama Department of Public Health Office of Radiation Control (the Department) via E-mail:
The Department has reviewed the licensee's actions to mitigate the consequences of this event as well as their proposed corrective actions. The licensee's corrective actions include stressing radiation safety to their technicians during regularly scheduled meetings. The Department indicates that these actions appear appropriate. The dosimeter results for the gauge operator have not been received at this time.
The Department considers this matter closed.
Notified R1DO (Greives) and NMSS Events Notification via email.
EN Revision Text: AGREEMENT STATE REPORT - DAMAGED MOISTURE DENSITY GAUGE
The following information was received from the Alabama Department of Public Health Office of Radiation Control via email:
"On April 20, 2021 about 1130 [EDT], Alabama licensee Building and Earth Sciences, Inc. (license number 1266) called to report that a moisture density gauge had been run over by a compactor while at a temporary job site. The licensee's representative stated that the gauge was in several pieces, and the source rod/probe could not be retracted into the safe shielded position. The licensee collected a leak test once the gauge was safely stored; exposure measurements from the leak test envelope were less than or equal to background. The gauge is a Troxler 3430 s/n 32716, with 9 milliCuries Cs-137 and 44 milliCuries Am-241:Be. The Agency is waiting on the licensee's report of this matter. More information to follow."
Alabama Report No.: 21-12
* * * UPDATE ON 5/19/21 AT 1109 EDT FROM MYRON K. RILEY TO LLOYD DESOTELL * * *
The following is a summary of information that was received from the Alabama Department of Public Health Office of Radiation Control (the Department) via E-mail:
The Department has reviewed the licensee's actions to mitigate the consequences of this event as well as their proposed corrective actions. The licensee's corrective actions include stressing radiation safety to their technicians during regularly scheduled meetings. The Department indicates that these actions appear appropriate. The dosimeter results for the gauge operator have not been received at this time.
The Department considers this matter closed.
Notified R1DO (Greives) and NMSS Events Notification via email.
Power Reactor
Event Number: 55201
Facility: Catawba
Region: 2 State: SC
Unit: [2] [] []
RX Type: [1] W-4-LP,[2] W-4-LP
NRC Notified By: Terry Odoms
HQ OPS Officer: Brian Lin
Region: 2 State: SC
Unit: [2] [] []
RX Type: [1] W-4-LP,[2] W-4-LP
NRC Notified By: Terry Odoms
HQ OPS Officer: Brian Lin
Notification Date: 04/21/2021
Notification Time: 02:37 [ET]
Event Date: 04/20/2021
Event Time: 22:30 [EDT]
Last Update Date: 04/21/2021
Notification Time: 02:37 [ET]
Event Date: 04/20/2021
Event Time: 22:30 [EDT]
Last Update Date: 04/21/2021
Emergency Class: Non Emergency
10 CFR Section:
50.72(b)(3)(ii)(A) - Degraded Condition
10 CFR Section:
50.72(b)(3)(ii)(A) - Degraded Condition
Person (Organization):
MILLER, MARK (R2)
MILLER, MARK (R2)
| Unit | SCRAM Code | RX Crit | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode |
|---|---|---|---|---|---|---|
| 2 | N | N | 0 | Refueling | 0 | Refueling |
EN Revision Imported Date: 5/20/2021
EN Revision Text:
REACTOR COOLANT SYSTEM (RCS) PRESSURE BOUNDARY DEGRADED
"During the performance of reactor vessel closure head (RVCH) examinations, at 2230 EDT on April 20, 2021, it was determined that the Unit 2 RVCH penetration nozzle number 74 did not meet the requirements of 10CFR50.55a(g)(6)(ii)(D) and ASME code case N-729-6 . All other RVCH penetration examinations have been completed per 10CFR50.55a(g)(6)(ii)(D) and ASME code case N-729-6 with no other relevant indications identified. The condition of the Unit 2 reactor vessel head penetration nozzle number 74 will be resolved prior to re-installation of the Unit 2 RVCH. This event is being reported as an eight-hour, non-emergency notification per 10CFR50.72(b)(3)(ii)(A).
"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:
REACTOR COOLANT SYSTEM (RCS) PRESSURE BOUNDARY DEGRADED
"During the performance of reactor vessel closure head (RVCH) examinations, at 2230 EDT on April 20, 2021, it was determined that the Unit 2 RVCH penetration nozzle number 74 did not meet the requirements of 10CFR50.55a(g)(6)(ii)(D) and ASME code case N-729-6 . All other RVCH penetration examinations have been completed per 10CFR50.55a(g)(6)(ii)(D) and ASME code case N-729-6 with no other relevant indications identified. The condition of the Unit 2 reactor vessel head penetration nozzle number 74 will be resolved prior to re-installation of the Unit 2 RVCH. This event is being reported as an eight-hour, non-emergency notification per 10CFR50.72(b)(3)(ii)(A).
"There was no impact on the health and safety of the public or plant personnel. The NRC Resident Inspector has been notified."