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Low Risk Confined SpaceA low risk confined space exists where there is easy entry/exit and natural ventilation. NC1 Classification No breathing apparatus required for low risk |
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Medium Risk Confined SpaceA medium risk confined space exists where there are access issues; a realistic expectation of encountering a specific risk; possible introduction of specified risks during the work activity. NC2 Classification Escape Set (Self Rescue) breathing apparatus required to be taken into medium risk |
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Medium Risk Confined SpaceNC3 Classification Escape Set (Self Rescue) breathing apparatus required to be taken into medium risk |
High Risk Confined Spaces
NC4 Classification Full breathing apparatus (working) required to be worn at all times in high risk. High risk entries require the presence of personnel who have designated responsibilities for dealing with emergencies. |