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Technical Report on the Project 'Developing Exposure Controls by Material Balance Modeling'.

PB2004105572

Publication Date	2001
Personal Author	Herrick, R. F.
Page Count	54
Abstract	Emission source characterization and detailed work task-exposure analysis were conducted at a gray iron foundry for the purpose of designing an exposure control system. The source characterization revealed that the emission of carbon monoxide from cooling molds is highly variable from mold to mold, and the quantity of CO emitted does not appear to be directly associated with the size of the casting. The unpredictable nature of the CO emissions made it infeasible to implement a model of ambient CO concentrations based upon the size and number of castings produced, however the detailed work task-exposure monitoring revealed the specific steps in the work process that made the greatest contribution to personal CO exposures. This information provided the basis for a set of recommendations on control options, and the foundry management has taken them under consideration.
Keywords	Air pollution control Iron foundries Emission sources Work tasks Exposure analysis Carbon monoxide Cooling molds Models Castings Monitoring Recommendations
Source Agency	National Institute for Occupational Safety and Health
Corporate Authors	Harvard School of Public Health, Boston, MA. Dept. of Environmental Health.; National Inst. for Occupational Safety and Health, Washington, DC.
Supplemental Notes	Sponsored by National Inst. for Occupational Safety and Health, Washington, DC.
Document Type	Technical Report
NTIS Issue Number	200419

Technical Report on the Project 'Developing Exposure Controls by Material Balance Modeling'.

Technical Report on the Project 'Developing Exposure Controls by Material Balance Modeling'.
PB2004105572

Publication Date	2001
Personal Author	Herrick, R. F.
Page Count	54
Abstract	Emission source characterization and detailed work task-exposure analysis were conducted at a gray iron foundry for the purpose of designing an exposure control system. The source characterization revealed that the emission of carbon monoxide from cooling molds is highly variable from mold to mold, and the quantity of CO emitted does not appear to be directly associated with the size of the casting. The unpredictable nature of the CO emissions made it infeasible to implement a model of ambient CO concentrations based upon the size and number of castings produced, however the detailed work task-exposure monitoring revealed the specific steps in the work process that made the greatest contribution to personal CO exposures. This information provided the basis for a set of recommendations on control options, and the foundry management has taken them under consideration.
Keywords	Air pollution control Iron foundries Emission sources Work tasks Exposure analysis Carbon monoxide Cooling molds Models Castings Monitoring Recommendations
Source Agency	National Institute for Occupational Safety and Health
Corporate Authors	Harvard School of Public Health, Boston, MA. Dept. of Environmental Health.; National Inst. for Occupational Safety and Health, Washington, DC.
Supplemental Notes	Sponsored by National Inst. for Occupational Safety and Health, Washington, DC.
Document Type	Technical Report
NTIS Issue Number	200419