Aviation Occupational Health and Safety Regulations

5.4 (1) If there is a likelihood that the health or safety of an employee is or may be endangered by exposure to a hazardous substance, the employer shall, without delay,

• (a) appoint a qualified person to carry out an investigation in that regard; and

• (b) notify the work place committee or the health and safety representative of the proposed investigation, and of the name of the qualified person appointed to investigate, so that they may participate in the investigation.

(2) In an investigation, the following criteria shall be taken into consideration:

• (a) the chemical, biological and physical properties of the hazardous substance;

• (b) the routes of exposure to the hazardous substance;

• (c) the acute and chronic effects on health of exposure to the hazardous substance;

• (d) the quantity of the hazardous substance to be handled;

• (e) the manner in which the hazardous substance is stored, used, handled and disposed of;

• (f) the control methods used to eliminate or reduce exposure of the employees to the hazardous substance;

• (g) the concentration or level of the hazardous substance to which an employee is likely to be exposed; and

• (h) whether the concentration of an airborne chemical agent or the level of ionizing or non-ionizing radiation is likely to exceed 50% of the values referred to in section 5.16 or the limits referred to in subsection 5.19(2).