Collection Occupational hygiene, Issue 31, 2000 year
Features of the influence of the electromagnetic field in modern sewing production
V.I. Nazarenko, L.A. Gvozdenko, V.G. Martirosova, Yu.A. Kachura
doi
Institute of Occupational Health of the Academy of Medical Sciences of Ukraine, Kiev
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In the orthogonal coordinate system, the vector distribution of the flux density of the magnetic induction ("B") and the electrical component ("E") of the electromagnetic field (EMF), generated by modern sewing equipment, sewing machines with a capacity of 78 - 880 W (firms Durkopp, Pfaff, Texima, Necchi , Juki, Strobel), “Mayer” thermo-finishing units, band saws and irons of various modifications at the workplaces of layers, fabric cutters, seamstresses, ironers, thermo-finishers, product inspectors. According to the flux density of electromagnetic induction, these workplaces can be conditionally divided into four groups: workplaces with average-shift exposure levels up to 0.25 μT, including product controllers (persons not associated with the professional use of EMF sources); workplaces with exposure levels of 0.25 - 0.5 μT, including fabric layers; workplaces with exposure levels of 0.5-1.5 μT, including cutters for automated cutting of fabrics, seamstresses for numbering clothing parts; with exposure levels of more than 1.5 μT - fabric cutters (on band saws and servocoaters) and seamstresses. It is noted that the flux density of magnetic induction along the orthogonal coordinate axes depends on the position of the source of the EMF field in space and its distance from the body of the worker. It is noted that seamstresses on a conveyor performing work while sitting have the highest EMF levels in the knees (1.55-1.95 μT) and abdomen (0.75-1.25 μT), lower levels are recorded at the chest level (0 , 40-0.75 μT) and head (0.22-0.34 μT). Such an uneven distribution of the electromagnetic load on the body of workers requires special attention when conducting hygienic and epidemiological studies to assess the impact of working conditions on the health of workers in the garment industry.
Key words: working conditions in the garment industry, electromagnetic field (EMF) of industrial frequency, electrical composites EMF, flux density of magnetic induction, industrial sources of EMF.
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