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A model to assess personal exposure to ELF magnetic fields from common household sources

✍ Scribed by Dr. Vincent Delpizzo

Publisher
John Wiley and Sons
Year
1990
Tongue
English
Weight
536 KB
Volume
11
Category
Article
ISSN
0197-8462

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✦ Synopsis

Emission data are inadequate to characterize the contribution of a source to the total personal extremely-low-frequency (ELF) magnetic field exposure. In this paper, a simple model is proposed that takes into consideration the position of the subject with respect to the source and the duration of exposure. The magnetic field is spatially averaged over the whole body of the exposed subject and integrated over time. Exposure is regarded as significant if it approaches or exceeds 400 pT-h/year. By use of this method, the ELF magnetic fields generated by several household sources were compared with the levels of residential external sources, to assess their relative significance. Some common domestic electrical appliances are found to be responsible for an exposure comparable to that from power lines. When the model is used to assess exposure to electric blankets, apparently conflicting findings may be reconciled.

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