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MSMWHS217 Gas Test Atmospheres 


Outcome: Nationally recognised statement of attainment


Course Duration: 4 hours (experience, competency and class size dependent) as a stand alone course or can be included in the Confined Space Entry, Day 1 course for a maximum of 8 persons.


Location: Onsite or offsite, statewide

Pre-requisites: Must be 16 years of age and possess good language, literacy and numeracy skills

What to bring: USI Number ( Biscuits, tea, coffee and drinks are provided. There are many takeaway food options nearby or feel free to bring your own lunch

CPD points acquired: 3 points (please contact CBOS to find out if you are eligible)

PPE requirements: Safety boots, long pants and Hi Vis short/long sleeve shirt

Course description: 

  • WHS Act 2012, Regulations, COP’s, A/S  

  • Risk Assessment, SWMS, JSA’s

  • Hierarchy of Control

  • Typical gas detectors

  • Symptoms of common gases

  • Gas generation

  • Gas detector challenge/bump testing and calibration

  • Prepare for gas test and gas test

  • Gas detector maintenance

Unit Descriptor

  • Prepare for gas testing

  • Test gas

  • Maintain equipment



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 competency requires the person to interpret readings and take actions based on the interpretation.


Working environment may be hazardous, unpredictable, subject to time pressure, chaotic and expose responders to risk, on land or water, by day or night. Workplace atmospheres may include visible and invisible hazards and hazardous surfaces.


The unit is suitable for use in the following situations:

  • confined spaces

  • enclosed and partially enclosed spaces

  • hot work

  • storage tanks, silos, pits, pipes, shafts, ducts, transport vehicles and ships

  • testing as part of issuing a work permit

  • monitoring as part of working under a work permit

  • open areas

  • holding the gas tester by hand

  • lowering the gas tester into a space, e.g. on a line.


This unit of competency applies to an individual working alone or as part of a team or group and working in liaison with other shift team members and the control room operator, as appropriate.


No licensing, legislative or certification requirements apply to this unit at the time of publication.



Anchor GTA
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