This unit of competency covers the skills and knowledge required to test the working atmosphere, using electronic test apparatus, to find out if it is safe for the proposed work.

It applies to situations where an individual may be required to carry out gas testing of an atmosphere prior to entering a specific area or workspace. The working environment may be hazardous, unpredictable, subject to time pressure, chaotic and expose responders to risk.

Workplace atmospheres may include visible and invisible hazardous contaminants, gases and dangerous oxygen levels.

The unit is suitable for use in the following situations: Confined space, hot works, storage tanks, ship yards, monitoring as part of a work permit system.