PS Respirable Crystalline Silica

This primary standard outlines the requirements for implementing and monitoring controls to manage Respirable Crystalline Silica (RCS) exposure in the workplace. Respirable Crystalline Silica is a natural mineral found in construction materials such as sand, stone, concrete, bricks, tiles, mortar, and engineered stone. 

This primary standard applies when identifying and planning tasks with a risk of RCS exposure such as cutting, grinding, drilling, and polishing materials containing crystalline silica or any other activity involving material containing crystalline silica that generates RCS.