PSAC has compiled several resources to inform the petroleum services sector about workers’ risks in regard to crystalline silica. Workers who are transporting, storing and handling sand are at risk of exposure above the exposure limit. Employers are required to have an Exposure Control Plan in place when workers have the potential to be exposed to silica.
Exposure control as per Western Canada Provincial regulations:
|Occupational Exposure Limits (OEL)|
|Canadian Jurisdictions||OEL¹ (mg/m³)|
|Canada Labour Code||0.025 [r]|
|BC, AB, MB, NS NL, PE||0.025 [r]|
|0.1 [quartz, tripoli]|
|QC||0.05 [r, cristobalite, tridymite]|
|0.1 [r, quartz, tripoli]|
|YT||300 particles/mL² [quartz]|
|Other Jurisdiction||OEL (mg/m³)|
|ACGIH 2011 TLV||0.025 [r]|
The Enform website has a variety of publications containing details on worker exposure to crystalline silica.