Title :
High-resolution magnetic field numerical dosimetry for live-line workers
Author :
Dawson, Trevor W. ; Caputa, Kris ; Stuchly, Maria A.
Author_Institution :
Dept. of Electr. & Comput. Eng., Victoria Univ., BC, Canada
fDate :
5/1/1999 12:00:00 AM
Abstract :
Numerical modeling provides one means for the realistic assessment of the electric field and current density levels induced in the bodies of live-line utility workers during occupational exposure to 60 Hz nonuniform magnetic fields. An efficient scalar potential finite difference method is applied to anatomically-derived high-resolution heterogeneous human body conductivity models, to provide such estimates for four representative posture and exposure scenarios. Dosimetric data are presented in terms of volumetric maximum and root mean square fields induced in various tissue groups by unit current. The results scale linearly with total source current, which allows the data to be applied to arbitrary current levels
Keywords :
biological effects of fields; current density; dosimetry; electromagnetic fields; finite difference methods; health hazards; personnel; power transmission lines; safety; 60 Hz; current density levels; electric field levels; exposure scenarios; high-resolution heterogeneous human body conductivity models; live-line workers; nonuniform magnetic fields; numerical dosimetry; occupational exposure; posture scenarios; scalar potential finite difference method; tissue groups; Biological system modeling; Conductivity; Current density; Dosimetry; Finite difference methods; Humans; Magnetic fields; Nonuniform electric fields; Numerical models; Root mean square;
Journal_Title :
Magnetics, IEEE Transactions on
