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In-depth survey report: field evaluation of Cedarapids engineering controls designed to reduce occupational exposures during asphalt paving operations; manufacturer: Cedarapids, Inc.; paving contractor: Milestone Contractors; paving location: Tippecanoe County, Indiana.
Mead KR; Mickelsen RL; Shulman SA
Cincinnati, OH: U.S. Department of Health and Human Services, Public Health Service, Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health, ECTB 208-18a, 2000 Apr; :1-46
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.
Asphalt-fumes; Control-technology; Exhaust-ventilation; Organic-vapors; Region-5
Field Studies; Control Technology
NTIS Accession No.
National Institute for Occupational Safety and Health
Page last reviewed: September 2, 2020
Content source: National Institute for Occupational Safety and Health Education and Information Division