Welding Cutting and Heating in Confined Spaces

Last Updated: October 6, 2026

1 Section
1 Lesson

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Welding Cutting and Heating in Confined Spaces

1 Lesson

Interactive course

Learn the ventilation, respirator, attendant, toxic-metal and fire-prevention rules that apply when you weld, cut or heat inside a confined space on a construction site.

This certificate records completion of awareness training based on OSHA 29 CFR 1926.352(a), (c), (d), (e), (g), (i) and (j) and 29 CFR 1926.353(a), (b) and (c). It is not an OSHA card or license, and it does not by itself meet the instruction requirement of 29 CFR 1926.352(e). Section 1926.353 has no worker training paragraph of its own. Your employer must still instruct any additional personnel assigned to guard against fire as to the specific anticipated fire hazards and how the firefighting equipment provided is to be used, and, where air line or filter-type respirators are required, protect employees with respirators in accordance with the requirements of subpart E of Part 1926.

What you will learn

Say what ventilation must be provided when hot work is done in a confined space
Explain what protection applies when ventilation cannot be obtained without blocking the way out
Describe the attendant and rescue arrangements for a welder entering through a small opening
Match metals of toxic significance to the protection they need
Apply the fire-prevention rules, including torch and hose handling in enclosed spaces

Course outline

Ventilation: Ventilation is required in a confined space; Clean air in, exhaust out, and no oxygen
Respirators, attendant and rescue: When ventilation cannot be obtained; Small openings: quick removal and an attendant
Metals of toxic significance: Zinc, cadmium filler and chromium; Lead, cadmium, mercury and beryllium; In the open air, and your coworkers
Fire prevention: Remove fire hazards and have a fire watch; Torches and hoses in enclosed spaces; Drums, containers and hollow structures
On the job