The Occupational Health and Safety Administration (OSHA) is in charge of ensuring the safety and health of workers in the U.S. through standards, training, outreach, and education. The presence of dangerous minerals like asbestos in the workplace has resulted in instances of asbestosis, lung cancer, and mesothelioma. OSHA has categorized asbestos abatement projects into four classes, including:
Class I: Class I is the most potentially hazardous class of asbestos abatement. The removal of thermal system insulation (TSI) and sprayed-on or troweled on surfacing material are examples of Class I activities. Most Class I projects are not completed in a single day.
Class II: The removal of other types of asbestos containing material (ACM ) other than TSI or surfacing material. Examples of Class II work include floor tile removal and roofing projects.
Class III: Repair and maintenance operations. Class III projects were formerly referred to as Operations and Maintenance (O&M) activities, or small-scale/short duration. Generally, Class III projects are completed in less than one day.
Class IV: Clean-up of ACM waste and debris, or routine cleaning activities involving ACM. Dusting contaminated surfaces, mopping, or other floor care, and cleaning up asbestos-containing materials from thermal system insulation (TSI) are included in Class IV activities.
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