In Switzerland, emission levels of non-ionising radiation (NIR) are regulated by the provisions of the Ordinance of Protection against Non-Ionising Radiation that entered into effect in 2000.
Systems and installations that emit NIR, for example air traffic control and radio equipment, are used at Zurich Airport for communication purposes and for detecting objects that reflect radiation.
In other systems such as transformers and high-voltage transmission lines that are also required for the operation of the airport, NIR is an unwanted secondary effect related to the current flow.
All systems and installations that emit non-ionising radiation at Zurich airport meet the respective national and international standards and have been approved by the competent authorities. None of the installations at Zurich Airport represents a health hazard on the basis of the present-day status of knowledge.