In semi-automatic arc welding, fume extraction guns appear to be the most suitable for reducing exposure to fumes. However, this solution for capturing pollutants at the source is not systematically implemented in the field because of ergonomic, technical and economic constraints. INRS carried out a study to characterise the performance of the main fume extraction guns on the market in order to assist users in making the best choice.
The work was done in close collaboration with all the players in the field. It highlighted, among other things, that the position of the ventilation inlets is one of the most influential factors. However, the replacement of classical torches by fume extraction models requires adaptations to be made to the workstations.
The conclusions were presented during a technical information and discussion session organised by INRS on 16 June 2015 in Paris.
See http://www.inrs.fr/footer/ actes-evenements/journee-fumees-soudage-2015.html for further information.