Swiss federal authorities

Radiation Protection

Radiation protection serves to protect personnel, the population and the surroundings of nuclear installations against ionising radiation.

ENSI deals with occupational radiological protection, dosimetry, radiation measurement systems, radioactive emissions and environmental monitoring, as well as with the radiological impact of accidents.

Background Articles

  • Background articles, Posts

    Series of articles on barriers 2/6: The nuclear fuel matrix (fuel assemblies part 1 of 2)

    The nuclear fuel is pressed into pellets and compacted using the sintering process before use in nuclear power plants. This process transforms the nuclear fuel into a ceramic material, which is able to retain the fission products that arise during operation in the nuclear fuel matrix.

  • Background articles, Posts

    Series of articles on barriers 1/6: Barriers protect people and the environment from radioactive substances

    The barrier concept aims to trap sources of radiation in nuclear facilities across several levels. Similar to the layers of an onion, independent barriers ensure that the risk from sources of radiation are minimised for people and the environment.

  • Background articles, Posts

    Protecting people against radiation

    «Every radiological protection official knows that the harmful effect of small doses of radiation is not exactly known at present. People must therefore be rigorously protected against radioactivity. We carry out regular measurements at nuclear power plants and in the surrounding area, also without prior announcement. If we do our job to the best of…

  • Background articles

    Radiation Measurement Technology

    Development and Research Work in the Field of Radiation Measurement Technology: this project deals with the verification and calibration of dosimetry systems and radiation measurement instruments. On the one hand, importance attaches to personal dosimetry, i.e. the measurement of the outer and inner radiation exposure for people.