The table below is intended, with no claim to complete comprehensiveness, at presenting briefly the characteristics of the main sources of electric, magnetic and electromagnetic fields present in the workplaces.
|
Frequency
|
Applications
|
Exposed workers
|
| 0 Hz - 3 kHz |
- Generation systems, electricity transmission and distribution
- Industrial equipment powered with high currents
- Trains
|
- Operators involved in power lines maintenance
- Users of lathe, shearing machine, compressor, drill, electric saw
- Workers involved in grinding process
- Welders
- Workers at foundries
- Persons employed near electric furnaces
- Machinists
|
| 3 - 30 kHz |
- Maritime broadcasts
- Video terminals (VDT)
|
- Maritime broadcast personnel
- Display screen or electrical equipment users
- Workers engaged in induction furnaces
|
| 100 kHz - 3 MHz |
- Acr welding
- Fusion
- Tempera
- Sterilization
- AM radio transmitters
- Telecommunication
- Radio-Navigation
|
- Chemical industry operators
- Paper industry operators
- Woodworking industry operators
- Rubber operators
- Automotive industry operators
- Telecommunications operators
|
| 3 MHz - 30 MHz |
- Heating
- Drying
- Bonding
- Welding
- Polymerization
- Dielectric substances sterilization
- Medicine applications
- International radio broadcasting
- Radio astronomy
|
- Engineers
- Electronic technicians
- Aircrew
- Radar Operators
- Maintenaince workers
- Radiofrequency ovens operators
- Airports staff
- Marconitherapy operators
- Health professionals (doctori, nurses)
|
| 30 MHz - 300 MHz |
- Heating
- Drying
- Bonding
- Welding
- Polymerization
- Dielectric substances sterilization
- FM radio transmission
- TV broadcastings
- Air traffic monitoring
- Radar transmission
|
- Engineers
- Electronic technicians
- Radar operators
- Maintenance workers
- Researchers
- Airports staff
|
| 300 MHz - 3 GHz |
- Meteorological radars
- Traffic control radars
- Radio links
- Mobile telephony
- Telemetry
- Medicine
- Microwave ovens
- Food production processes
|
- Engineers
- Technicians
- Health practitioners
- Nurses
- Workers involved in apparatus maintenance
- Food industry operators
|
| 3 GHz - 30 GHz |
- Altimeters
- Radar for sea and air navigation
- Satellite communications
- Microwave radio links
- Radars used by police
|
- Radio and TV transmitters operators
- Radar operators
|
| 30 GHz - 300 GHz |
- Radioastronomy
- Radiometereology
- Microwave Spectroscopy
|
- Coast Guard personnel
- Metereological researchers
- Researchers
|
