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In the event of an incident

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  • Ausbreitungsrechnungen für Schweizer Kernanlagen
    Background articles

    Dispersion models

    In the event of an unplanned release of radioactive substances into the atmosphere, protecting the population and the environment is of the highest priority. This requires early identification of the areas potentially affected by the radioactive substances. Before the onset of a release, however, it is not yet possible to rely on environmental radioactivity measurements.…

    Dispersion Models, Emergency Preparedness, In the Event of an Incident
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  • Alerting

    In the event of an emergency, the authorities inform the population as soon as possible. The rapid flow of information is important. If the population is at specific risk in an emergency, the competent authority at the federal or cantonal level orders alerting of the population and the issuing of instructions on what actions to…

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  • Dispersion Models

    Protection of the population and ecosystems takes priority if there is a release of radioactivity. It is essential to identify the areas most at risk from radioactivity as soon as possible. However, before any radioactivity is released (in the pre-phase) it is not possible to make use of any radioactivity measurements obtained in the surroundings. Therefore…

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  • ADAM

    The software ADAM (“Accident Diagnostics, Analysis and Management”) records, visualises and interprets the plant parameters that are constantly transmitted and defined by nuclear power plants. In the event of an incident, the on-duty stand-by engineer uses this for the first assessment of the plant status. Based on simple logic, ADAM interprets the current plant state…

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  • Emergency classes

    According to the Nuclear Energy Ordinance (NEO), events and findings in nuclear installations are classified as follows: Severe Accident (General Emergency) A severe accident (general emergency state) represents a serious current or a prognosticated radiological hazard to the environment, and requires the preparation of or implementation of protective actions in the vicinity of the nuclear…

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  • In the Event of an Incident

    In the event of an incident, the operators of nuclear installations have the following tasks: ENSI’s tasks in the event of an incident ENSI performs the following tasks: It rates the incident according to the International Nuclear Events Scale (INES) of the IAEA. News Background articles Documents

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  • Alarm signals

    General alarm The ‘general alarm’ signal is sounded when there is a possible threat to the population. It signals to the population that it should turn on the radio and follow the instructions of the authorities. The ‘general alarm’ signal is a regular ascending and descending tone. It lasts for one minute and is repeated…

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  • ENSI kann Ausbreitung radioaktiver Stoffe berechnen
    News

    ENSI can calculate the dispersion of radioactive substances

    The dispersion calculation can be used by the responsible emergency organisations (in particular ENSI and the National Emergency Operations Centre, NEOC) to predict the direction in which a radioactive cloud will move after its release from a nuclear power plant.

    Emergency Preparedness, In the Event of an Incident, Propagation
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  • MADUK Monitoring Network

    ENSI operates an automatic dose-rate monitoring network in the vicinity of nuclear facilities. Readings are transmitted round the clock to ENSI. You find the real time measurements here.

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