On Board Trains Occupational Health and Safety Regulations

7.3 (1) If the health or safety of an employee is likely to be endangered by exposure to a hazardous substance in a work place, 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 investigation and the qualified person’s name.

(2) In the investigation, the following matters shall be considered:

• (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 employees to the hazardous substance;

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

• (h) whether the concentration of an airborne chemical agent is likely to be greater than 50% of the value referred to in paragraph 7.20(1)(a) for that chemical agent or whether the level of ionizing or non-ionizing radiation is likely to be greater than any applicable limit referred to in subsection 7.23(2) or (3); and

• (i) whether the level referred to in paragraph (g) is greater than any maximum applicable level set out in Part III or less than any minimum applicable level set out in that Part.