Risk management strategy to increase the safety of workers in the nanomaterials industry

► On-site assessment of nanomaterials using physiochemical and cytotoxic analysis can help identify risks for each nanomaterials manufacturing plant. ► The risk of the nanomaterials manufacturing plants can be divided into three levels based on exposure routes (tier 1), aspect identification (tier 2), and toxicological screening (tier 3). ► According to the different risk levels, the precautionary risk management (PRM) such as technology control, engineering control, and personal protective equipment were applied. ► The PRM strategy can be effectively reduced workers risks for nanomaterial industries.