Swiss federal authorities

Radiation protection

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  • Delegation der spanischen Aufsichtsbehörde.
    News, Posts

    The Spanish regulatory authority and ENSI in talks on radiation protection

    From 6 to 8 May 2024, a delegation from the Spanish regulatory authority visited ENSI. Discussions focused on the topic of radiation protection, in particular exchanging of experience relating to the Leibstadt NPP and to the Mühleberg NPP, which is currently being dismantled.

  • Effects of radiation

    Ionising radiation can affect living organisms and cause damage to the organism, irrespective of whether the radiation is of natural or artificial origin. The severity of the effects depends on the energy absorbed by the cells and the duration of the exposure to radiation. When a person is exposed to a radiation field, the radiation…

  • Education and Training

    Based on the Radiation Protection Training Ordinance, ENSI oversees radiation protection training. This includes, among other things, the approval of courses for the radiation protection personnel of nuclear installations. The legal requirements regulate the areas of application and the so-called “permitted activities” for radiation protection personnel in the three categories radiation protection practitioners, radiation protection…

  • Radiation Protection in Nuclear Installations

    Occupational radiological protection Occupational radiological protection includes all radiation protection and monitoring actions in the nuclear installations that ensure the safety of the exposed personnel. In a broader sense, decontamination systems and procedures, as well as the containment and retention of radioactive substances by building structures, systems and components, are also considered. The holistic approach…

  • Surveillance

    Radiation protection monitoring technology is used to ensure that the dose limit values for nuclear installation employees and the surrounding population are complied with. Employees of nuclear installations must wear personal dosimeters, which are evaluated monthly by accredited bodies such as Suva or the Federal Office of Public Health (FOPH). Alongside the personal dose, the…

  • Radioactivity

    Radioactivity is the property exhibited by an unstable atomic nucleus, according to which it spontaneously emits ionising radiation. ENSI is responsible for the protection of the personnel of nuclear installations, the population and the environment against ionising radiation. Further Information News Background articles Documents

  • News, Posts

    Corrigendum to scientific article

    Corrigendum to the scientific article “Valid versus invalid radiation cancer risk assessment methods illustrated using Swiss population data”, published on 24 November 2021 in the Journal of Radiological Protection.

  • News, Posts

    MADUK: Display of measurement data improved

    ENSI has upgraded its MADUK web application. The MADUK monitoring network is used to monitor the radioactivity around nuclear power plants and the Paul Scherrer Institute (PSI).

  • News, Posts

    Luana Hafner, ENSI’s radiation protection expert, receives the young scientist award from the International Commission on Radiological Protection (ICRP)

    Luana Hafner, a specialist in radiological safety at ENSI, has been awarded the “Cousins Award for Young Scientists and Professionals” at the Sixth International Symposium on the System of Radiological Protection, in Vancouver.