Assessment of Health Hazard and Standard Promulgation in China

  • Chiang Huai
Part of the NATO Advanced Study Institutes Series book series (NSSA, volume 49)


In general, radiofrequency and microwave radiation at sufficient levels of intensity and duration of exposure could cause harmful effects on a living organism, but the bioeffects and their mechanism are not yet well known. There are many uncertainties and differences of opinions, so that the safe exposure limits proposed in various countries differ from each other greatly, and there are two different types of safe exposure standards to consider depending on the population to be protected. There is an occupational standard which is used to protect persons working in the RF or MW environment, and an environmental standard to protect the general public. The safe exposure level of the latter is often as low as one tenth of the former, because the general population includes children, pregnant women, and individuals with various diseases. Both of these exposure standards differ from the emission or performance standards which restrict the emission of radiation from devices, such as the emission standards for microwave ovens in the United States and Canada. An exposure standard refers to the maximum permissible exposure level to the body, which must be based mainly on realistic assessment of health hazard, and which is to be discussed here.


Power Density Electric Field Strength Health Hazard Exposure Standard Microwave Exposure 
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Copyright information

© Plenum Press, New York 1983

Authors and Affiliations

  • Chiang Huai
    • 1
  1. 1.Microwave InstituteChekiang Medical CollegeHangchowChina

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