For personnel in nuclear power plants, time and distance are critical measurements when it comes to safe inspections. When workers need to enter a high-radiation area to examine a potential problem or make a routine inspection, proximity to radiation and the length of time the inspection takes can increase their effective radiation dose.

Suspected corrosion or blocked conduits or vessels in the containment area need to be handled immediately to help avoid accidental radiation leakage. In some cases, the
Source: NDT