Direct Exposure of Welders to Welding Fumes and Effect of Fume Extraction Systems Under Controlled Conditions
| Autor: | Peter Brand, André Esser, Benjamin L. Ebert, Rahul Sharma |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Breathing zone
Materials science Air Pollutants Occupational Welding Welding fume complex mixtures law.invention 03 medical and health sciences 0302 clinical medicine law Occupational Exposure otorhinolaryngologic diseases Humans Lung Inhalation Exposure Metal Workers Extraction (chemistry) Metallurgy technology industry and agriculture Public Health Environmental and Occupational Health respiratory system 030210 environmental & occupational health respiratory tract diseases Welding process Direct exposure Ventilation (architecture) Gases Time integral |
| Zdroj: | Journal of Occupational & Environmental Medicine. 63:490-502 |
| ISSN: | 1536-5948 1076-2752 |
| DOI: | 10.1097/jom.0000000000002167 |
| Popis: | INTRODUCTION Welding fume exposure of welders occurs either directly from the welding process and sputters or from the fume background within the workshop. In this study the contribution of fume originating directly from the welding process was assessed. METHODS Exposure was quantified by measuring the time integral of fume mass concentration using a tapered element oscillating micro balance connected to a welder dummy. RESULTS Direct fume exposure was highest for welding processes with low fume emission rates and lowest for processes with high fume emission rates. CONCLUSIONS This finding is supposed to be due to the higher energy input of high emitting processes which stabilizes the thermic column and therefore eliminates fume particles from the welder's breathing zone. Exposure can be minimized by additionally optimizing workshop ventilation. |
| Databáze: | OpenAIRE |
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