Assessment of occupational exposure to magnetic fields in high-voltage substations (154/34.5 kV).

This work proposes the survey of magnetic field measurements taken in 154/31.5 kV substations in the city of Antalya for occupational exposure assessment. For measurements, three substations have been taken into account, where four occupants are present for each 8 h of shift, which means 12 occupants are present during the day. Operator desks at three different substations read a lowest magnetic field of 0.3 microT at minimum loaded season and reached up to 1 microT at maximum loaded season, which means operators exposed to a magnetic field of > or = 0.3 microT 8 h d(-1). In switch gear regions, maximum magnetic field reading is 23 microT at minimum loaded season and reached up to 70 microT. Outdoor magnetic field measurement at circuit breaker region goes up to 62 microT with respect to operator heights.