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By U.S. Department of Labor, Occupational Safety and Health Administration
Powerful administration of worker protection and well-being safety is a decisive consider decreasing the level and severity of work-related accidents and health problems and their comparable expenditures. in reality, an efficient security and well-being administration method kinds the foundation of fine worker defense which may keep time and cash, raise productiveness and decrease worker accidents, health problems and similar staff’ repayment bills. to help employers and staff in constructing powerful protection and wellbeing and fitness administration platforms, this 2009 counsel rfile addresses the keep an eye on of worker exposures to respirable dirt containing crystalline silica, that is identified to reason silicosis, a major lung disorder, in addition to elevate the danger of lung melanoma and different systemic illnesses. This rfile offers details at the effectiveness of varied engineering regulate techniques for a number of forms of development operations and kit, and includes thoughts for paintings practices and breathing safety, as applicable.
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Additional info for Controlling Silica Exposures in Construction
7 Case Study II: In an older Swedish study, an employee used 6-millimeter (mm) bits to drill numerous holes 50-mm deep (approximately ¼inch by 2-inch holes) into concrete under experimental conditions. 24 mg/m3 during the period evaluated. 8 Investigators obtained similar results when they tested equipment with 10-mm bits used for drilling 80-mm deep holes (approxi- mately 3/8 inch by 31/8 inch). 9 In the same study, the operator tested equipment with a dust collection bag attached directly to the drill.
National Institute for Occupational Safety and Health, Cincinnati, OH. February, 2000. NIOSH. 2002. Pocket guide to chemical hazards. Pub. No. 2002-140. National Institute for Occupational Safety and Health, Cincinnati, OH. June, 2002. OSHA. 1996. Ground-fault protection on construction sites. Occupational Safety and Health Administration, Office of Training and Education. May, 1996. OSHA Case Files (Special Emphasis Program Inspection Reports from 1996-1998). Shields, C. 1999. Silica dust exposures from OSHA construction inspections in the Chicago area 19961998.
Case Studies The following case studies indicate silica exposure levels found under certain uncontrolled conditions, and show the effectiveness of controls in reducing silica exposures. Case Study I: Three construction workers used pneumatic and electric drills with ¾-inch bits to drill holes in the lower level of a concrete parking structure with poor ventilation. 7 Case Study II: In an older Swedish study, an employee used 6-millimeter (mm) bits to drill numerous holes 50-mm deep (approximately ¼inch by 2-inch holes) into concrete under experimental conditions.