On Board Trains Occupational Health and Safety Regulations

7.3 (1) Where there is a likelihood that the safety or health of an employee in a work place 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; and

• (b) notify the safety and health committee or the safety and health representative, if either exists, of the proposed investigation and of the name of the qualified person appointed to carry out that investigation.

(2) In the investigation referred to in subsection (1), 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 effects on safety and health of exposure to the hazardous substance;

• (d) the state, concentration and quantity of the hazardous substance handled;

• (e) the manner in which the hazardous substance is handled;

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

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

• (h) whether the value, level or percentage referred to in paragraph (g) is likely to

  • (i) exceed that prescribed in section 7.20 or 7.21 or Part IV, or

  • (ii) be less than that prescribed in Part III.