This unit involves the skills and knowledge required to enter confined spaces. In the context of this unit, a confined space is any compartment or area that has the capability of accumulating a toxic, flammable or explosive atmosphere, or of being flooded, in addition to one of the following characteristics:limited opening for accessno escape route or very restricted means of escapelimited natural ventilationatmosphere containing more than 23.5% or less than 19.5% oxygenIt includes the skills required to prepare to enter confined spaces and to finalise egress at the conclusion of the task/s.This unit applies to Defence personnel involved in entering confined spaces as a workplace responsibility, but it is applicable to all individuals who work in this field. Those undertaking this unit would work independently or as part of a team under indirect supervision. They must be able to use discretion and judgement and take responsibility for the quality of their outputs. They would perform routine tasks in a range of familiar contexts.No licensing, legislative or certification requirements apply to this unit at the time of publication.An individual undertakes this as part of a team in conjunction with other individuals who also have this competency. It is expected that one or more of the team members, or a team member not working in the confined space, will hold a current, recognised, first aid certificate.