Characteristics of fume sedimentation in the working zone during arc welding with covered electrodes

In order to develop effective protection measures and reduce the number of diseases in the welding industry, a detailed study of the mechanism of propagation of welding fumes in the working zone is necessary. The present work investigates the characteristics of fume sedimentation in the working zone...

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Bibliographic Details
Published in:	Toxicological and environmental chemistry 2019-11, Vol.101 (9-10), p.463-474
Main Authors:	Kirichenko, Konstantin Yu, Vakhniuk, Igor A., Rogulin, Rodion S., Kirichenko, Aneta V., Gridasov, Alexander V., Kosyanov, Denis Yu, Drozd, Vladimir A., Kholodov, Alexey S., Piekoszewski, Wojciech, Golokhvast, Kirill S.
Format:	Article
Language:	eng
Subjects:	Arc welding Cellulose condensed part of welding fume Electrodes Fumes maximum permissible concentration particle size distribution Particulate matter PM10 Propagation Regression analysis Rutile Sedimentation Sedimentation & deposition Welding welding fume Welding fumes
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Summary:	In order to develop effective protection measures and reduce the number of diseases in the welding industry, a detailed study of the mechanism of propagation of welding fumes in the working zone is necessary. The present work investigates the characteristics of fume sedimentation in the working zone during arc welding with various covered industrial electrodes. The influence of covering type (rutile, basic, acid, and rutile-cellulose) on the quantity (number of particles) of РМ 0.3 ...PM 10 fractions in fumes is shown. Data on the absolute quantitative prevalence of particles of the smallest measured PM 0.3 fraction (PM 0.3 /PM 10 ≫ 75-90%) were obtained. Based on regression analysis, the sedimentation processes of welding fumes were modeled. The shortest forecast period of particles sedimentation is forecast for acid covered electrodes (53 min.), the maximum - for basic covered ones (150 min.). The maximum predicted distance of fumes distribution in space is expected for rutile-cellulose covered electrodes (16 m), the smallest - for rutile covered ones (6 m). The different types of electrodes for arc welding were ranked according to the degree of negative impact of exposure to fumes depending on the duration of their fume emission rate in the air and the propagation distance in the working zone.
ISSN:	0277-2248 1029-0486