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Development of Design Criteria for Exhaust Systems for Open Surface Tanks.

PB274222

Publication Date	1974
Personal Author	Flanigan, L. J.; Talbert, S. G.; Semones, D. E.; Kim, B. C.
Page Count	78
Abstract	A new design criteria for local exhaust systems for open surface tanks is developed taking into account higher gassing rates due to increased plating current densities, use of surface control agents such as plastic balls, push-pull ventilation methods for wide tanks and air agitated tanks. A hydrocarbon analyzer is used to monitor the amount of airborne contaminants emitted to the room and into the exhaust duct from a water-alcohol bath. Emission levels measured in the room for various operating conditions can be graphically related to the exhaust rate required to maintain specific threshold limit values for various baths as dictated by the toxicity and evaporation rate of the emitted material.
Keywords	Industrial hygiene Exhaust systems Tanks(Containers) Storage tanks Exhaust hoods Exhaust gases Design criteria Design standards Ventilation Air pollution Standards Concentration(Composition) Occupational safety and health Air pollution control Threshold limit values
Source Agency	National Institute for Occupational Safety and Health
NTIS Subject Category	57U - Public Health & Industrial Medicine 94D - Job Environment 68A - Air Pollution & Control
Corporate Authors	Battelle Columbus Labs., Ohio.; National Inst. for Occupational Safety and Health, Cincinnati, Ohio. Div.
Document Type	Technical Report
NTIS Issue Number	197804
Contract Number	PHS-HSM-099-71-61

Development of Design Criteria for Exhaust Systems for Open Surface Tanks.

Development of Design Criteria for Exhaust Systems for Open Surface Tanks.
PB274222

Publication Date	1974
Personal Author	Flanigan, L. J.; Talbert, S. G.; Semones, D. E.; Kim, B. C.
Page Count	78
Abstract	A new design criteria for local exhaust systems for open surface tanks is developed taking into account higher gassing rates due to increased plating current densities, use of surface control agents such as plastic balls, push-pull ventilation methods for wide tanks and air agitated tanks. A hydrocarbon analyzer is used to monitor the amount of airborne contaminants emitted to the room and into the exhaust duct from a water-alcohol bath. Emission levels measured in the room for various operating conditions can be graphically related to the exhaust rate required to maintain specific threshold limit values for various baths as dictated by the toxicity and evaporation rate of the emitted material.
Keywords	Industrial hygiene Exhaust systems Tanks(Containers) Storage tanks Exhaust hoods Exhaust gases Design criteria Design standards Ventilation Air pollution Standards Concentration(Composition) Occupational safety and health Air pollution control Threshold limit values
Source Agency	National Institute for Occupational Safety and Health
NTIS Subject Category	57U - Public Health & Industrial Medicine 94D - Job Environment 68A - Air Pollution & Control
Corporate Authors	Battelle Columbus Labs., Ohio.; National Inst. for Occupational Safety and Health, Cincinnati, Ohio. Div.
Document Type	Technical Report
NTIS Issue Number	197804
Contract Number	PHS-HSM-099-71-61