The NRC and DHS have deemed exempt quantity sources to not represent a significant health hazard. However, they still emit radiation. With all radioactive material, the hazard is reduced using administrative and engineering controls such as time, distance, and shielding. Reducing one’s time in the presence of radioactive material, increasing one’s distance from the source of radiation, or installing shielding between oneself and the source of radiation are all methods to reduce the already low health hazard. However, it should be noted that these precautions are not required for radioactive materials deemed exempt.