Description should include determining
- the ventilation system and heating/cooling system in the work area
- the need for a personal breathing apparatus when welding in confined spaces or the use of fume extractors.
Process/Skill Questions:
- What is your welding lab’s ventilation system? What are its components?
- Why should there always be a clean supply of fresh air?
- How does one decide when to use a personal breathing apparatus when welding?