Use of Low Frequency, Radio Frequency and Microwave Radiation sources

In accordance with CEI EN 50499, the following sources of electromagnetic fields (0 Hz-300 Ghz) must be the subject of risk assessment, since they could produce electromagnetic fields above the maximum exposure limits established by the standard and potentially affect the thermal and bioelectric properties of human tissues:

  • Industrial electrolysis
  • Electric welding (fixed workstations)
  • Electric and induction melting furnaces
  • Induction heating
  • RF and MW dielectric heating
  • Dielectric welding
  • Industrial magnetisers/demagnetisers
  • Specialised RF energised lighting
  • RF plasma devices
  • Electric crack detector systems
  • Radars
  • Industrial microwave heating and drying systems
  • Radio base station antennas
  • Electricity supply network components (transformers, lines, etc.) and electricity consuming appliances with a current rating of > 100A (frequency: 50 Hz).


Other installations and devices (e.g.: computers, mobile and cordless phones, portable battery-powered devices, but excluding radio frequency transmitters) need not be considered since, in accordance with CEI EN 50499, they create electromagnetic fields that are below exposure limits for the public.


Caution! People with implanted electronic devices such as pacemakers are particularly sensitive to the risk. Specific signs must therefore be installed to indicate areas where there is a risk of exposure, even when the limits are not exceeded. It is important to restrict access by people with implanted devices which could be affected by exposure to electromagnetic fields, even when below the limits established by the standard for healthy individuals.