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Field Validation of Ventilation Troubleshooting Methods

PB2015100619

Publication Date	1999
Personal Author	Guffey, S. E.
Page Count	60
Abstract	The purpose of this study was to determine the efficacy of current methods and methods proposed by the P.I. to 'troubleshoot' industrial exhaust ventilation systems using measured pressures and flows. Exhaust ventilation systems for contaminant control often experience obstructions and other deleterious alterations to individual ducts. Those alterations can reduce airflow to hoods, reducing their reliability in controlling exposures to hazardous airborne contaminant. Since alterations often are hidden from sight inside opaque ducts, it is necessary to find them using indirect means, primarily by interpreting changes to observed airflows and pressures.
Keywords	Ventilation Air flow Airborne particles Contamination Control systems Ducts Exhaust systems Hazards Industrial plants Pressure measurement Validation Troubleshooting methods
Source Agency	National Institute for Occupational Safety and Health
NTIS Subject Category	68A - Air Pollution & Control 89B - Architectural Design & Environmental Engineering 97J - Heating & Cooling Systems 94E - Environmental Engineering
Corporate Authors	Washington Univ., Seattle. 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	201503

Field Validation of Ventilation Troubleshooting Methods

Field Validation of Ventilation Troubleshooting Methods
PB2015100619

Publication Date	1999
Personal Author	Guffey, S. E.
Page Count	60
Abstract	The purpose of this study was to determine the efficacy of current methods and methods proposed by the P.I. to 'troubleshoot' industrial exhaust ventilation systems using measured pressures and flows. Exhaust ventilation systems for contaminant control often experience obstructions and other deleterious alterations to individual ducts. Those alterations can reduce airflow to hoods, reducing their reliability in controlling exposures to hazardous airborne contaminant. Since alterations often are hidden from sight inside opaque ducts, it is necessary to find them using indirect means, primarily by interpreting changes to observed airflows and pressures.
Keywords	Ventilation Air flow Airborne particles Contamination Control systems Ducts Exhaust systems Hazards Industrial plants Pressure measurement Validation Troubleshooting methods
Source Agency	National Institute for Occupational Safety and Health
NTIS Subject Category	68A - Air Pollution & Control 89B - Architectural Design & Environmental Engineering 97J - Heating & Cooling Systems 94E - Environmental Engineering
Corporate Authors	Washington Univ., Seattle. 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	201503