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Industrial Hygiene Study: Extent of Exposure to Hydrazines.

PB86203874

Publication Date	1986
Page Count	74
Abstract	Walk through surveys of facilities handling hydrazine (302012) were conducted. Eight facilities were surveyed. These included installations where hydrazines were used as propellants, hydrazine production sites, sites where hydrazine was used as an aircraft emergency power unit fuel, and sites where hydrazine was used in boiler water treatment. At all facilities, employers and employees were aware of the need to avoid exposure and had developed hydrazine handling systems, work practices, and personal protective equipment programs to minimize the risk of exposure. Hydrazine production activities generated time weighted average (TWA) exposures that were generally well below 0.1 part per million, primarily because the production processes involved closed systems. Using hydrazines as propellants involved potential exposures while loading or unloading spacecraft and in related propellant transfer operations and while testing spacecraft components that utilized hydrazine. The authors conclude that TWA exposures to hydrazine compounds are relatively low. The number of exposed workers is also small. Current manufacturing methods are relatively new as is large scale propellant and emergency power unit usage. The accumulated person/years are relatively low, and it is unlikely that suitable cohorts exist for retrospective exposure studies.
Keywords	Environmental surveys Industrial medicine Exposure Toxicity Inspection Hazardous materials Toxic substances Occupational safety and health Hydrazine CAAS 30-20-12
Source Agency	Centers for Disease Control Bureau of Laboratories National Institute for Occupational Safety and Health
NTIS Subject Category	57U - Public Health & Industrial Medicine 57Y - Toxicology 94D - Job Environment 68G - Environmental Health & Safety
Corporate Authors	Clayton Environmental Consultants, Inc., Southfield, MI.; National Inst. for Occupational Safety and Health, Cincinnati, OH. Div.
Supplemental Notes	Sponsored by National Inst. for Occupational Safety and Health, Cincinnati, OH. Div. of Surveillance, Hazard Evaluations and Field Studies.
Document Type	Technical Report
NTIS Issue Number	198619
Contract Number	PHS-NIOSH-200-82-2521

Industrial Hygiene Study: Extent of Exposure to Hydrazines.

Industrial Hygiene Study: Extent of Exposure to Hydrazines.
PB86203874

Publication Date	1986
Page Count	74
Abstract	Walk through surveys of facilities handling hydrazine (302012) were conducted. Eight facilities were surveyed. These included installations where hydrazines were used as propellants, hydrazine production sites, sites where hydrazine was used as an aircraft emergency power unit fuel, and sites where hydrazine was used in boiler water treatment. At all facilities, employers and employees were aware of the need to avoid exposure and had developed hydrazine handling systems, work practices, and personal protective equipment programs to minimize the risk of exposure. Hydrazine production activities generated time weighted average (TWA) exposures that were generally well below 0.1 part per million, primarily because the production processes involved closed systems. Using hydrazines as propellants involved potential exposures while loading or unloading spacecraft and in related propellant transfer operations and while testing spacecraft components that utilized hydrazine. The authors conclude that TWA exposures to hydrazine compounds are relatively low. The number of exposed workers is also small. Current manufacturing methods are relatively new as is large scale propellant and emergency power unit usage. The accumulated person/years are relatively low, and it is unlikely that suitable cohorts exist for retrospective exposure studies.
Keywords	Environmental surveys Industrial medicine Exposure Toxicity Inspection Hazardous materials Toxic substances Occupational safety and health Hydrazine CAAS 30-20-12
Source Agency	Centers for Disease Control Bureau of Laboratories National Institute for Occupational Safety and Health
NTIS Subject Category	57U - Public Health & Industrial Medicine 57Y - Toxicology 94D - Job Environment 68G - Environmental Health & Safety
Corporate Authors	Clayton Environmental Consultants, Inc., Southfield, MI.; National Inst. for Occupational Safety and Health, Cincinnati, OH. Div.
Supplemental Notes	Sponsored by National Inst. for Occupational Safety and Health, Cincinnati, OH. Div. of Surveillance, Hazard Evaluations and Field Studies.
Document Type	Technical Report
NTIS Issue Number	198619
Contract Number	PHS-NIOSH-200-82-2521