MSMWHS217 – Gas Test Atmospheres
It 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, interpret readings and take actions based on the interpretation.
Situations that require testing might include:
enclosed and partially enclosed spaces
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
holding the gas tester by hand
lowering the gas tester into a space, e.g. on a line.