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Silica in the Workplace

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SILICA IN THE WORKPLACE 17 365-AXJ-01-iGDO © 2020, Workplace Safety & Prevention Services (WSPS) 1 877 494 WSPS (9777) | 905 614 1400 | wsps.ca WSPS.CA The preceding factors must be considered during the process of selection. When a respirator is provided to workers, the employer must develop a written respiratory protection program as outlined in the designated substances regulation (O. Reg 490/09, s.26.1 to 26.5). This includes proper respirator selection, care and use; limitations of the respirator; fit testing, training and instruction, filter/cartridge change out schedules and more. A Respiratory Protection Program can be based on the requirements of Canadian Standards Association (CSA) Standard Z94.4, selection, use, and care of respirators. In addition to respiratory protection, workers exposed to crystalline silica may be required to wear other personal protective equipment, such as goggles. gloves and protective outer clothing. The clothing materials used are often very tightly woven or sealed by resins. Use of personal protective equipment carries a cost to the user. Among the factors, which must be recognized, are the following: Reduced vision Reduced performance due to increased difficulty in breathing Reduced manual dexterity Increased frequency of accidents Possible hyperventilation syndrome Increased susceptibility to heat stress For the preceding reasons the use of personal protective equipment, such as outlined here, should be considered only as the last line of defence rather than the first.

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