Earlier studies conducted at 400 and 110 kV substations in Finland have shown that the occupational exposure to electric fields can exceed the action levels (ALs) set by Directive 2013/35/EU. This is a case study investigating the level of occupational exposure experienced by workers at 220 kV substations in order to determine if the actions levels are being exceeded. The measurements were conducted at two old 220 kV substations in Finland. The higher AL of 20 kV m-1 was exceeded at both substations.
The aim of this study was to investigate the level of occupational exposure to static magnetic fields experienced by workers close to high voltage direct current (HVDC) cables in Finland. The measurements were conducted at a 500 kV HVDC substation in Finland from 8 different measuring points with a commercial G100 handheld Gaussmeter by Coliy Technology. As a conclusion it can be stated that the static magnetic fields occurring in Fingrid's grid are safe for workers who do not have active implanted devices.
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