Decat Gilbert, Deckx Leo, Meynen Guy, De Graef Emmy, Jonlet Florence
VITO, Mol, Belgium.
Int J Occup Saf Ergon. 2006;12(2):169-76. doi: 10.1080/10803548.2006.11076678.
The spectrum and the polarization of the magnetic flux density (B-field) of 6 induction heaters and 1 arc oven were measured by means of a PMM (Italy) spectrum analyser. The spectrum analysis showed that no substantial harmonics were observed while the polarization analysis revealed that the operator's exposure was non-homogeneous within a distance of 1.5 m from the heater. When the distance was larger, the body was homogeneously exposed. In general we can state that the B-field strongly varied between heaters and that exposure exceeded the occupational reference levels recommended by the International Commission on Non-Ionizing Radiation Protection (ICNIRP) (1998) and European Directive 2004/40/EC in 5 of the 7 heaters. Within the framework of the Directive some protection actions should be taken. Whereas mitigation of existing/old induction ovens is difficult, the design of new induction heaters and their housing should be based, among others, on electromagnetic reducing engineering concepts.
使用一台PMM（意大利）频谱分析仪测量了6台感应加热器和1台电弧炉的磁通密度（磁场）频谱及极化情况。频谱分析表明未观察到大量谐波，而极化分析显示，在距离加热器1.5米范围内，操作人员的暴露情况不均匀。当距离更大时，身体暴露均匀。总体而言，我们可以说不同加热器之间的磁场变化很大，并且7台加热器中有5台的暴露超过了国际非电离辐射防护委员会（ICNIRP）（1998年）和欧洲指令2004/40/EC推荐的职业参考水平。在该指令框架内，应采取一些保护措施。鉴于减轻现有/旧感应炉的影响很困难，新感应加热器及其外壳的设计除其他外应基于电磁减少工程概念。
