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Health Hazard Evaluation Report: HETA-88-336-2038: A.E. Staley Manufacturing Company; Houlton, Maine
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1990/04/01
[PDF-153.37 KB]
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Description:In response to a request from the American Federation of Grain Millers, a study was made of exposures to propylene-oxide (75569), starch dust, phosphorus-oxychloride (10025873), and the potential explosion hazard from starch dust at the A.E. Staley Manufacturing Company (SIC-2046), Houlton, Maine. The facility was a food starch specialty factory with imported tapioca as the main raw material. The site employed 44 hourly and seven salaried and clerical full-time persons. Propylene-oxide air concentrations ranged from less than 0.1 to 6.0 parts per million (ppm) in 89 samples collected in the reactor room and other areas of the site. Twenty-six personal breathing zone samples were collected from two operators and a laboratory technician on two work shifts over 3 consecutive days. The operators had 8-hour time weighted average exposures ranging from 0.1 to 0.7ppm. The highest short-term exposure was 1.9ppm for 77 minutes. The laboratory technician had exposures from less than 12.51mg/m3; the OSHA permissible exposure limit for nuisance dust was 10mg/m3. In many locations starch dust was seen on the surfaces as well as in the air. The author concludes that detectable levels of propylene-oxide were present in the reactor room and other areas of the facility; exposure should be reduced to the lowest feasible concentration. The starch dust is a potential fire and explosion hazard. The author recommends that starch dust emissions into the work area should be reduced to the lowest feasible level.
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Pages in Document:16 pdf pages
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Contributor:McCammoon, Jane; Kaiser, Edward A.; Driscoll, Richard; Smith, David
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NIOSHTIC Number:00194758
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NTIS Accession Number:PB91-118968
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Citation:Cincinnati, Ohio: U.S. Department of Health and Human Services, Public Health Service, Centers for Disease Control, National Institute for Occupational Safety and Health, HETA 88-336-2038, 1990 Apr; :1-18
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Federal Fiscal Year:1990
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Peer Reviewed:False
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Resource Number:HETA-88-336-2038
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