Canada Occupational Health and Safety Regulations (SOR/86-304)

11.01 The following definitions apply in this Part.

class of confined spaces

class of confined spaces means a group of at least two confined spaces that are likely, because of their similarity, to present the same hazards to persons entering, exiting or occupying them. (catégorie d’espaces clos)

confined space

confined space means a space that

• (a) is enclosed or partially enclosed;

• (b) is not designed or intended for continuous human occupancy; and

• (c) has a limited or restricted means of entry or exit or an internal configuration that could complicate provision of first aid, evacuation, rescue or other emergency response. (espace clos)

hazardous confined space

hazardous confined space means a confined space that, when entered, occupied or exited by persons, presents hazards likely to cause injury, illness or other adverse health effects to persons entering, exiting or occupying it because of

• (a) its design, construction, location or atmosphere;

• (b) the materials or substances in it; or

• (c) any other conditions relating to it. (espace clos dangereux)

hot work

hot work means any work where a flame is used or a source of ignition may be produced. (travail à chaud)