ABSTRACT
To efficiently protect against risk of harmful effects of RFR, regulatory agencies, in addition to setting safety limits, need to incorporate a "safety margin" to allow for uncertainty. This is contrary to the requirements of a simple technical standard that has to be based on measurable quantities. The question that now faces various standard-setting bodies is how to deal with the uncertainty and weakness of the available knowledge on risk of RFR, and how big the safety margin should be to sufficiently cover possible risks.
