Acts and Regulations

91-191 - General

Section 267
Disposition versions

Full text
Lower explosive limit of substances in confined space
Repealed: 2022-79
2022-79
267Repealed: 2022-79
2022-79
Lower explosive limit of substances in confined space
267(1)An employer shall not permit an employee to enter or remain in a confined space where the concentration of an airborne chemical agent or mixture of chemical agents or airborne dust in the confined space exceeds 50% of the lower explosive limit of the chemical agent or mixture of chemical agents or dust.
267(2)Where the concentration of an airborne chemical agent or mixture of chemical agents or airborne dust in a confined space does not exceed 50% of its lower explosive limit, an employer shall ensure that
(a) explosion proof lighting is used, and
(b) the only work performed by the employee in the confined space is that of cleaning or inspecting and is of such a nature that it does not create any source of ignition.
267(3)Where the concentration of an airborne chemical agent or mixture of chemical agents or airborne dust in a confined space does not exceed 10% of its lower explosive limit, an employer shall ensure that
(a) explosion proof lighting is used, and
(b) the only work performed in the confined space is cold work using non-sparking equipment.