Occupational exposure to multiple frequency electromagnetic fields: Summation of components according to current EU regulations

Occupational exposure to electromagnetic fields is regulated by exposure standards by setting exposure limits that ca not be exceeded and reference levels for fast testing of compliance. In the case of multiple frequency fields, contribution of each spectral component is evaluated by comparing its level with the reference level at that frequency. Given the frequency dependence of reference levels, compliance of the total electromagnetic field level is evaluated by several summation formulae for specific cases. The authors present the standard summation formulae as well as simplified summation formulae to be applied in practical situations.