Swiss federal authorities

Radiation protection

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  • Temporary Swiss Personal Radiation Dose Document

    Together with the FOPH and Suva, ENSI has developed templates for the Swiss personal dose document and for the temporary Swiss personal dose document. Both dose documents are available in two versions; one in German, French and Italian and one in English. This is intended to facilitate the preparation of dose documents for licence holders…

  • Titelblatt Strahlenschutzbericht 2024
    News, Posts

    Radiation Protection Report 2024: All Legal Limits Met

    In 2024, Swiss nuclear installations met all legal radiation protection limits according to ENSI’s annual radiation protection report. Based on a closely coordinated system of monitoring instruments, ENSI was able to verify that the regulated parties fulfilled their legal obligations to protect both personnel and the general public from radiation.

  • Radiation Protection Report 2024 – ENSI-AN-12238

    In 2024, Swiss nuclear installations met all legal radiation protection limits according to ENSI’s annual radiation protection report. Based on a closely coordinated system of monitoring instruments, ENSI was able to verify that the regulated parties fulfilled their legal obligations to protect both personnel and the general public from radiation.

  • 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