17. Preventing Unauthorized Entry

Regulation & Section Number	Wording in the Regulation
Industrial Establishments: Section 119.16	If there is a possibility of unauthorized entry into a confined space, the employer shall ensure that each entrance to the confined space, (a) is adequately secured against unauthorized entry; or (b) has been provided with adequate barricades, adequate warning signs regarding unauthorized entry, or both.
Mines and Mining Plants: Section 309
Health Care and Residential Facilities: Section 43.15
Confined Spaces: Section 17
Construction Projects: Section 221.15

Only authorized personnel are allowed entry to the confined space, in accordance with the procedures identified in the plan.

The employer must ensure that measures and procedures are put in place to adequately secure each entrance to the confined space against unauthorized or accidental entry. These measures and procedures may include, but are not limited to, adequate barricades, adequate warning signs, or any combination thereof. In addition, while workers are in a confined space, there is a requirement for an attendant who should have control over access.

In some circumstances, use of signs is not practical, such as for every manhole and grate. A tool is usually required for removal of the cover, and therefore, it would likely be considered secure against entry.