On this episode of the IHSA Safety Podcast, Jasmine Kalsi, IHSA’s occupational hygienist, discusses the importance of air quality testing and exposure assessments in Ontario's construction, transportation, and electrical utility sectors. These industries often expose workers to various airborne dusts and contaminants, which can have both short-term and long-term health effects.
Ontario Regulation 833 regulates the control of exposure to biological or chemical agents, including steps for assessing and determining airborne concentrations. Jasmine highlights that air quality testing is crucial in identifying workplace exposure levels, as this information helps compare with regulatory limits, determine if workers are overexposed, and determine if controls are needed. Air quality testing can be done proactively by employers or requested from the Ministry of Labour, Immigration, Training and Skills Development (MLITSD) based on observations.
Jasmine explains that employers can determine what needs to be assessed by reviewing the company’s safety data sheets, previous claims data, past exposure assessments, as well as utilizing relevant resources such as IHSA's occupational health risk toolkit. Another recommended resource is the National Institute for Occupational Safety and Health’s (NIOSH) online tool, The NIOSH Pocket Guide to Chemical Hazards, which provides key data on various hazardous agents, including exposure limits, testing methods, and more.
It is critical for employers to understand the importance of air quality testing and implement appropriate controls to protect their workers and reduce the risk of exposure to hazardous chemical and biological agents in their workplaces.
Free Resources
NIOSH Pocket Guide to Chemical Hazards
Regulation 833: Control of exposure to biological or chemical agents
Current occupational exposure limits for Ontario workplaces under Regulation 833
IHSA.ca - Diagnostic Toolkit: Occupational Health Risks
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