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首页> 美国政府科技报告 >In-Depth Survey Report: Field Evaluation of Cedarapids Engineering ControlsDesigned to Reduce Occupational Exposures during Asphalt Paving Operations. Manufacturer: Cedarapids, Inc. Paving Contractor: Milestone Contractors. Paving Location: Tippecanoe Cou
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In-Depth Survey Report: Field Evaluation of Cedarapids Engineering ControlsDesigned to Reduce Occupational Exposures during Asphalt Paving Operations. Manufacturer: Cedarapids, Inc. Paving Contractor: Milestone Contractors. Paving Location: Tippecanoe Cou

机译：深入调查报告：Cedarapids工程控制的现场评估旨在减少沥青摊铺作业期间的职业暴露。制造商：Cedarapids，Inc。铺路承包商：里程碑承包商。摊铺地点：Tippecanoe Cou

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Researchers from the National Institute for Occupational Safety and Health(NIOSH) evaluated a first-generation engineering control designed to capture and remove fugitive asphalt emissions during asphalt paving. The Cedarapids engineering control evaluation was completed as part of a Department of Transportation (DOT) project to evaluate the effectiveness of engineering controls on asphalt paving equipment. The scope of this report is limited to the Cedarapids phase two (field) evaluation of a single engineering control installed on a Cedarapids Model CR411 asphalt paving machine. The tested design consisted of two exhaust hoods (one per side) mounted above the auger area. A single rubber flap attached to the rear edge of both exhaust hoods and extended over the remaining auger area between the paver and the screed. Two exhaust fans (one per hood) removed air from the enclosed auger area. The captured air was discharged within a hot-gas mixing box (muffler), where it combined with hot exhaust from the paver engine prior to exiting through a single paver exhaust stack.

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