The main reason accidents occur in or around ‘Confined Spaces’is because a PLAN has not been developed, by the employer, per the regulations. The company must answer the following question,

What is a Confined Space?

A ‘Confined Space’ means a fully or partially enclosed space,
(a) that is not both designed and constructed for continuous human occupancy, and
(b) in which atmospheric hazards may occur because of its construction, location or contents or because of work that is done in it.

Ontario Regulation 632/05

The plan shall contains provisions for,
a) The duties of workers
b) Co-ordination document (section on lead employers)
c) On-site rescue procedures
d) Rescue equipment and methods of communication
e) Clothing and personal equipment and devices
f) Isolation of energy and control of materials movement
g) Attendants
h) Adequate means for entering and exiting
i) Atmospheric testing
j) Ventilation and purging
k) The Permit