All employees should use personnel dosimetry badges to track the amount of absorbed occupational radiation they receive working around nuclear gauges. There are provisions that allow you to bypass this requirement. If you can document that the average annual dose is less than 500 mrem most states and the NRC allow you to forgo badges. Check with your regulatory agency to see if you have this option.
These badges, also known as film badges or TLD’s (Thermolumnescent Dosimeters) are small clip–on devices that should be worn, typically on a belt-loop, whenever in the presence of gauges.