Welder Red Seal · Question
When welding in a confined space where natural ventilation is insufficient, what is the primary method of ensuring welder safety from harmful fumes?
Provincial OHS regulations require active measures in confined spaces. Mechanical exhaust ventilation (fume extraction) at the source is preferred, but if that'
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Question: When welding in a confined space where natural ventilation is insufficient, what is the primary method of ensuring welder safety from harmful fumes?
Answer options:
- Using a low-fume electrode and welding for short periods.
- Having a fire watch stationed outside the entrance. ✅ Employing mechanical ventilation or a supplied-air respirator.
- Working only when the ambient temperature is below 20°C.
Correct answer: Employing mechanical ventilation or a supplied-air respirator.
Explanation: Provincial OHS regulations require active measures in confined spaces. Mechanical exhaust ventilation (fume extraction) at the source is preferred, but if that's not feasible or sufficient, a supplied-air respirator is mandatory to protect the welder from toxic fumes and oxygen displacement.
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