United States Nuclear Regulatory Commission - Protecting People and the Environment
Home > NRC Library > Document Collections > Reports Associated with Events > Event Notification Reports > 2020 > July 16

Event Notification Report for July 16, 2020

U.S. Nuclear Regulatory Commission
Operations Center

Event Reports For
7/15/2020 - 7/16/2020

** EVENT NUMBERS **


54765 54781

To top of page
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
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
Emergency Class: Non Emergency
10 CFR Section:
30.50(b)(2) - Safety Equipment Failure
Person (Organization):
KARLA STOEDTER (R3DO)
NMSS_EVENTS_NOTIFICATION (EMAIL)

Event Text

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.

To top of page
Power Reactor Event Number: 54781
Facility: Watts Bar
Region: 2     State: TN
Unit: [1] [2] []
RX Type: [1] W-4-LP,[2] W-4-LP
NRC Notified By: Tim Taylor
HQ OPS Officer: Donald Norwood
Notification Date: 07/15/2020
Notification Time: 14:58 [ET]
Event Date: 07/15/2020
Event Time: 08:35 [EDT]
Last Update Date: 07/15/2020
Emergency Class: Non Emergency
10 CFR Section:
50.72(b)(3)(v)(D) - Accident Mitigation
Person (Organization):
MARK MILLER (R2DO)
Unit SCRAM Code RX Crit Initial PWR Initial RX Mode Current PWR Current RX Mode
1 N Y 100 Power Operation 100 Power Operation
2 N Y 100 Power Operation 100 Power Operation

Event Text

MAIN CONTROL ROOM ENVELOPE INOPERABLE DUE TO MCR DOOR BEING AJAR

"At 0835 EDT on July 15, 2020, it was discovered that the main control room (MCR) envelope was inoperable due to a MCR door being found ajar; therefore, this condition is being reported as an eight-hour, non-emergency notification per 10 CFR 50.72(b)(3)(v). The door was closed, restoring the MCR envelope to operable at 0839 EDT. There was no impact on the health and safety of the public or plant personnel. The NRC Resident Inspector has been notified."


Page Last Reviewed/Updated Thursday, July 16, 2020
Thursday, July 16, 2020