Abstract

The occupation of welder is considered to be high risk, because welding fumes and some of their metal constituents are classified as carcinogenic to humans. Preliminary studies have also shown the presence of fumes at greater than standard concentrations in various welding sectors in Québec. According to these studies, the composition and proportion of particles present in these fumes may vary, depending on numerous factors, such as the techniques used, the nature of the parts to be welded and the characteristics of the electrode.

This research project aims to establish the nature of and level of exposure to fumes and their metal constituents during welding activities in Québec.

The research will be conducted in welding apprenticeship schools, where the most common welding techniques are used. It will involve monitoring the exposure to fumes and their metal constituents among some 40 individuals during welding activities using various techniques. The research team will carry out measurements in various biological matrices and the respiratory zones of the workers.

The analysis of the data will make it possible to target techniques, metals and metalloids that should be more closely monitored in terms of exposure. The results obtained will make it possible to prioritize prevention activities, the groups that should be monitored, changes in techniques or adapted means of protection to reduce workers’ exposure, while ensuring the quality of welding.