What is the primary hazard of working in confined spaces during welding?

The primary hazard of working in confined spaces during welding is the limited airflow that increases the risk of toxic gas accumulation. When welding in confined spaces, proper ventilation can be challenging to achieve, leading to the buildup of harmful gases such as carbon monoxide, argon, or ozone, depending on the materials being welded and the welding process used. This accumulation poses serious health risks, including asphyxiation or long-term respiratory problems.

Inadequate airflow can also prevent the dispersal of welding fumes and particulate matter, further increasing exposure levels and associated risks. Ensuring adequate ventilation is crucial in confined spaces to maintain a safe work environment and protect the welder's health. The focus on this hazard highlights the importance of recognizing environmental conditions in which welding occurs and actively taking measures to mitigate risks associated with confined spaces.