BfS works for the safety and protection of man and the environment against damage due to ionising and non-ionising radiation. The field of ionising radiation includes, e.g., X-ray diagnosis in medicine, safety in the use of radioactive materials, among others in nuclear technology and the protection against enhanced natural radioactivity. Among the fields of work in the area of non-ionising radiation are the protection against UV radiation and the effects of mobile communication technology, precautionary protection of the population, employees in the working world and patients in the medical field being of decisive significance. Important part of radiation protection precaution are BfS's continuous measurements of radioactivity in the environment. The fields of responsibility of the BfS are radiological health protection, environmental and physico-technical radiation protection, radiological emergency management, nuclear safety, the federal custody of nuclear fuels, the management (disposal) of radioactive waste as well as the safety of transport and storage of nuclear fuels.