Controlling the gases arising from the use of oxygen and acetylene, consisting mainly of carbon dioxide with the addition of oxides of nitrogen where an oxidising flame is used, and carbon monoxide.

The combustion of any fuel, eg, acetylene, propane or methane, with oxygen from a cylinder rather than air at normal or increased pressure, gives a hotter flame that is often easier to control.

This document gives guidance to teachers and technicians that will be supervising a welding or plasma cutting facility.

Guidance on controlling the fumes from these operations can be found in GL326

The creation of a joint using a filler of similar composition to the metal being joined. The combustion of the fuel gives rise to hazardous fumes.