Workbook for Designated Substance Assessments
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366-BPV-01-IMOT © 2024, Workplace Safety & Prevention Services (WSPS)
1 877 494 WSPS (9777) | 905 614 1400 | WSPS.CA
SECTION V: CONTROL PROGRAMS
The Designated Substances Regulation specifies that where your assessment reveals that a worker is
likely to be exposed to the substance, and that their health may be affected as a result, you must establish
a control program as detailed in the O. Reg. 490, Section 20.
The control program must have as a minimum:
Engineering controls,
Work practices,
Hygiene facilities and practices,
Methods and procedures to monitor the airborne concentrations of the substance in the workplace
and worker exposure,
Personal records of the exposure of a worker to the substance at the workplace are to be maintained
by the employer as described in the O. Reg. 490,
A training program for supervisors and workers on the health effects of the designated substance
and the measures and procedures required under the control program,
Respiratory Protection Program as described in O. Reg. 490,
Pre-placement, periodic, acute exposure and exit medical examinations, for required substances
(asbestos, benzene, coke oven emissions, isocyanates, lead, mercury or silica), as referenced in the
Code of Medical Surveillance,
Medical examination after exposure to acrylonitrile, arsenic, ethylene oxide or vinyl chloride as
described in O. Reg 490,
Record of medical examinations and clinical tests of a worker to be maintained by a physician who
has examined the worker or under whose direction the clinical tests have been performed.
Personal protective equipment may be used to keep exposures within prescribed limits only in
emergencies where the control technology is not available or practical, or in the case of temporary
breakdown of existing controls.
Where you already have a control program, you will need to ensure that it is in writing and that it meets
these legal requirements. Consult the regulation for full details O. Reg. 490.
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