Abstract: Currently, non-ionizing electromagnetic radiation presents a significant type of emission. It is decisive for risk assessment to measure the values of corresponding dosimetric quantities in places where exposed personnel move and, based on developed scenarios, to compare the exposure of personnel with action values set by the legislature.
The exposure limit values and action values of dosimetric quantities for evaluating exposure situations of the electromagnetic wave action in the range of frequencies f [Hz] ? (0.0; 3.1011? has been defined by the International Commission on Non Ionizing Radiation Protection (ICNIRP). The hygienic limits have also been adopted by the EU and incorporated in the existing Czech legal regulations.
The scientific community seriously discusses whether the hygienic limits for continuous exposures are justifiable with regard to the risk assessment resulting from exposure to electromagnetic waves in frequencies f ? 3.1011 Hz. The limit setting process considers exclusively thermal effects for the frequencies f [Hz] ? ?105; 3.1011? and the effect on the cardiovascular and nervous system for the frequencies f ? 107 Hz.
The paper summarizes the findings of significant studies aimed at long-term effects of electromagnetic radiation and fields of under-limit values on people. These publications deal with the public health protection policy, express suspicion that long term exposure to diferent types of non-ionizing electromagnetic waves initiates the occurrence of children’s leukaemia, brain tumours, auditory nerve tumours, cancer and immunosuppression, Alzheimer’s disease, neurological diseases, heart and reproductive disorders, etc. Children form a particularly sensitive group.
Difficulties connected with the verification of such effects on a statistically significant level are also discussed together with the current hygienic limits which are compared with the analogical standards while considering the aspect of their electromagnetic compatibility.
Based on the analysis, it is evident there is no compatibility or harmonization of laws and standards in the field of electromagnetic compatibility and hygienic limits valid in the USA, EU and CR for non-ionizing electromagnetic wave action. It is clear that the decision-making on which of the published findings are to be taken seriously and which are to be rejected in establishing the limits requires comprehensive special knowledge and sophistication with regard to many fields of study. The final decision on which of the findings will be used for establishing limits may logically be influenced by the lobby of wealthy organizations as well. There is no doubt that the research findings in this field are also influenced by the entity financing the research.
Our group comes to the conclusion that it is reasonable to consider the preliminary precaution principle during the analysis of exposure situations.
The authors applied the preliminary precaution approach together with the valid health limit acceptance approach in health risk assessment resulting from the professional exposure of EMF personnel in military units operating radars.

Brief Biography of the Speaker:
Born in June 19, 1950 in Vyskov, Czech Republic. He is a graduate from the University of Chemical Technology in Pardubice, branch of study - Macromolecular Substances Technology. After the graduation he was admitted to study for a post-graduate degree of the Academy of Sciences of Czechoslovakia at the Macromolecular Chemistry Research Institute in Brno. He dealt with the problems of ionic polymerization of oxygen heterocyclic compounds. In 1979 he submitted his dissertation and in 1988 he was appointed associate professor at the University of Chemical Technology in Pardubice in the branch called Macromolecular Chemistry. In 1993 he habilitated. In 1978 he started working at the University of the Ground Forces where he was executing the duties of vice-dean of research work for 6 years. In 2002 he was appointed for the post of professor in the branch called Force and Civil Protection. Since 1989 he has been dealing with the problems of the environmental protection focused on waste management, proactive tools of environmental policy and especially risk management, currently at the University of Defence and the Mendel University of Agriculture and Forestry in Brno. He is a member of pilot studies and working groups of NATO, scientific and branch councils and many foreign professional and scientific societies.