529BWhen processing of CSS is controlled

529B  When processing of CSS is controlled  (1) In these Regulations, the processing of a CSS is controlled if:  (a) control measures to eliminate or minimise risks arising from the processing are implemented so far as is reasonably practicable; and  (b) at least 1 of the following measures are used during the processing:  (i) the isolation of a person from dust exposure;  (ii) a fully enclosed operator cabin fitted with a high efficiency air filtration system;  (iii) an effective wet dust suppression method;  (iv) an effective on‑tool extraction system;  (v) an effective local exhaust ventilation system; and  (c) a person still at risk of being exposed to respirable crystalline silica after 1 or more of the measures in paragraph (b) are used:  (i) is provided with respiratory protective equipment; and  (ii) wears the respiratory protective equipment while the work is carried out. Note: See also regulation 351.  (2) Despite subregulation (1), if the measures in paragraph (1)(b) are not reasonably practicable, the processing of a CSS is controlled if a person who is at risk of being exposed to respirable crystalline silica during the processing:  (a) is provided with respiratory protective equipment; and  (b) wears the respiratory protective equipment while the work is carried out.  (3) In this regulation, respiratory protective equipment means personal protective equipment that:  (a) is designed to prevent a person wearing the equipment from inhaling airborne contaminants; and  (b) complies with:  (i) AS/NZS 1716:2012 (Respiratory protective devices); and  (ii) AS/NZS 1715:2009 (Selection, use and maintenance of respiratory protective equipment). Note: Regulations 44, 45 and 46 apply to the provision and use of personal protective equipment, including the respiratory protective equipment provided under paragraph (1)(c) and subregulation (2).