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Measuring Occupational Exposure to Extremely Low-Frequency Electric Fields at 220 kV Substations
Herkko Pirkkalainen1, Timo Heiskanen1, Juhani Tonteri1
1Fingrid Oyj, Helsinki, Finland.
Abstract:
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.
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