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Do you know?……

  • What confined space is?

As defined in the Occupational Safety and Health Regulations 1996, part 3 division 8; r.3.82

Confined space means an enclosed or partially enclosed space which;

  1. is not intended or designed primarily as a workplace; and
  2. is at atmospheric pressure during occupancy; and
  3. has restricted means for entry and exit,

and which either;

  1. has an atmosphere containing or likely to contain

potentially harmful levels of contaminant; or

  1. has or is likely to have an unsafe oxygen level; or
  2. is of a nature or is likely to be of a nature that could

contribute to a person in the space being overwhelmed

by an unsafe atmosphere or a contaminant;

“contaminant” means any substance, the presence of which may

be harmful to safety or health.

[Regulation 3.82 amended in Gazette 17 Dec 1999 p. 6233.]

Confined spaces are commonly found in vats, tanks, pits, pipes, ducts, flues, chimneys, silos, containers, pressure vessels, underground sewers, wet or dry wells, shafts, trenches, tunnels or other similar enclosed or partially enclosed structures, when these examples meet the definition of a confined space in the WHS Regulations.

  • Air normally contains 21% oxygen by volume, although oxygen levels of 19.5% — 23.5% by volume are considered to be safe. When oxygen levels are below 19.5% in a confined space this is considered unsafe. Source – AS 2865-1995
  • A licence to operate a mobile non-slewing crane does not allow the operator to drive the vehicle on public roads. To do this you must also hold a relevant motor vehicle licence such as a HR, HC, or MS licence.