Event Notification Report for July 07, 2020
U.S. Nuclear Regulatory Commission
Operations Center
EVENT REPORTS FOR
07/06/2020 - 07/07/2020
Non-Agreement State
Event Number: 54765
Rep Org: TTL ASSOCIATES, INC
Licensee: TTL Associates, INC
Region: 3
City: Romulus State: MI
County:
License #: 21-2666601
Agreement: N
Docket:
NRC Notified By: Jeffrey Elliott
HQ OPS Officer: Ossy Font
Licensee: TTL Associates, INC
Region: 3
City: Romulus State: MI
County:
License #: 21-2666601
Agreement: N
Docket:
NRC Notified By: Jeffrey Elliott
HQ OPS Officer: Ossy Font
Notification Date: 07/07/2020
Notification Time: 14:38 [ET]
Event Date: 07/07/2020
Event Time: 14:00 [EDT]
Last Update Date: 07/07/2020
Notification Time: 14:38 [ET]
Event Date: 07/07/2020
Event Time: 14:00 [EDT]
Last Update Date: 07/07/2020
Emergency Class: Non Emergency
10 CFR Section:
30.50(b)(2) - Safety Equipment Failure
10 CFR Section:
30.50(b)(2) - Safety Equipment Failure
Person (Organization):
KARLA STOEDTER (R3DO)
NMSS_EVENTS_NOTIFICATION (EMAIL)
KARLA STOEDTER (R3DO)
NMSS_EVENTS_NOTIFICATION (EMAIL)
SOURCE DISLODGED FROM DAMAGED GAUGE
The following is a summary of a phone call received from the licensee:
A technician was at a job site taking measurements with a Troxler 3430 density gauge (S/N: 23216). The gauge contains an 8 mCi Cs-137 source and a 40 mCi Am-Be source. While the source rod was extended into the ground, the technician, along with others, attempted to get the attention of the driver of a pickup truck backing up into the work area. They were unsuccessful, and the truck backed into the gauge, bending the rod, preventing it from being retracted. The technician attempted to straighten the rod, but was unsuccessful. Then the rod was bent in the other direction and the Cs-137 source became dislodged. It was placed in a plastic container and the area was cordoned off.
The Radiation Safety Officer (RSO) was en route, and with guidance from the service company, will place the source in a bucket and fill it with sand, survey the area for any contamination, return the source to the facility for a leak test, and store the gauge. The RSO will determine how to dispose of the source and gauge once the leak test results are received.
The technician was wearing dosimetry and it will be sent in for analysis. It is not expected that there was much additional exposure received.
The following is a summary of a phone call received from the licensee:
A technician was at a job site taking measurements with a Troxler 3430 density gauge (S/N: 23216). The gauge contains an 8 mCi Cs-137 source and a 40 mCi Am-Be source. While the source rod was extended into the ground, the technician, along with others, attempted to get the attention of the driver of a pickup truck backing up into the work area. They were unsuccessful, and the truck backed into the gauge, bending the rod, preventing it from being retracted. The technician attempted to straighten the rod, but was unsuccessful. Then the rod was bent in the other direction and the Cs-137 source became dislodged. It was placed in a plastic container and the area was cordoned off.
The Radiation Safety Officer (RSO) was en route, and with guidance from the service company, will place the source in a bucket and fill it with sand, survey the area for any contamination, return the source to the facility for a leak test, and store the gauge. The RSO will determine how to dispose of the source and gauge once the leak test results are received.
The technician was wearing dosimetry and it will be sent in for analysis. It is not expected that there was much additional exposure received.
Agreement State
Event Number: 54861
Rep Org: CALIFORNIA RADIATION CONTROL PRGM
Licensee: Mistras Group, Inc.
Region: 4
City: Torrance State: CA
County:
License #: 4832-19
Agreement: Y
Docket:
NRC Notified By: Robert Greger
HQ OPS Officer: Donald Norwood
Licensee: Mistras Group, Inc.
Region: 4
City: Torrance State: CA
County:
License #: 4832-19
Agreement: Y
Docket:
NRC Notified By: Robert Greger
HQ OPS Officer: Donald Norwood
Notification Date: 08/26/2020
Notification Time: 23:49 [ET]
Event Date: 07/07/2020
Event Time: 00:00 [PDT]
Last Update Date: 08/27/2020
Notification Time: 23:49 [ET]
Event Date: 07/07/2020
Event Time: 00:00 [PDT]
Last Update Date: 08/27/2020
Emergency Class: Non Emergency
10 CFR Section:
Agreement State
10 CFR Section:
Agreement State
Person (Organization):
RAY KELLAR (R4DO)
NMSS_EVENTS_NOTIFICATION (EMAIL)
RAY KELLAR (R4DO)
NMSS_EVENTS_NOTIFICATION (EMAIL)
AGREEMENT STATE REPORT - RADIOGRAPHY CAMERA SOURCE RETRACTION FAILURE
The following information was received via E-mail:
"The Radiation Safety Officer with Mistras Group, Inc. contacted the Radiologic Health Branch regarding an incident with an Ir-192 radiography source that was determined to be locked out of its exposure device. The source was an Industrial Nuclear Model 32 Ir-192 source, Serial Number 550F, with an activity of 63.4 Curies. The device was an Industrial Nuclear Ir-100, Serial Number 4358. The incident occurred during radiography operations at a refinery in El Segundo.
"After a routine exposure, the radiographer retracted the source. The radiographer then proceeded with the radiation survey that showed a dose rate of 80 mR/hr approximately 2 feet from the exposure device, indicating that the source was not in the locked and shielded position. The radiographer contacted the RSO who instructed them to readjust the restricted area boundary to maintain 2 mR/hr dose rate.
"After the RSO arrived at the site, they placed shielding to reduce the dose rate while performing retrieval and returning the source to the locked and secured position. The device was then red tagged and placed out of service until it could be evaluated by the manufacturer. The highest dose received by Mistras Personnel (RSO) was 20 mrem, as read by a self-reading pocket dosimeter. The licensee's investigation into this event is ongoing and will be reviewed further by the California Department of Public Health."
California 5010 Number: 070820
The following information was received via E-mail:
"The Radiation Safety Officer with Mistras Group, Inc. contacted the Radiologic Health Branch regarding an incident with an Ir-192 radiography source that was determined to be locked out of its exposure device. The source was an Industrial Nuclear Model 32 Ir-192 source, Serial Number 550F, with an activity of 63.4 Curies. The device was an Industrial Nuclear Ir-100, Serial Number 4358. The incident occurred during radiography operations at a refinery in El Segundo.
"After a routine exposure, the radiographer retracted the source. The radiographer then proceeded with the radiation survey that showed a dose rate of 80 mR/hr approximately 2 feet from the exposure device, indicating that the source was not in the locked and shielded position. The radiographer contacted the RSO who instructed them to readjust the restricted area boundary to maintain 2 mR/hr dose rate.
"After the RSO arrived at the site, they placed shielding to reduce the dose rate while performing retrieval and returning the source to the locked and secured position. The device was then red tagged and placed out of service until it could be evaluated by the manufacturer. The highest dose received by Mistras Personnel (RSO) was 20 mrem, as read by a self-reading pocket dosimeter. The licensee's investigation into this event is ongoing and will be reviewed further by the California Department of Public Health."
California 5010 Number: 070820