Field Evaluation of Methods for Determining the Obstructed Section of Branches of Industrial Ventilation Systems

Details

• Personal Author:
  Booth DW Sr. ; Guffey SE
• Description:
  This study proposes and evaluates the effectiveness of three methods in determining the location of obstructions and alterations in the branches of industrial ventilation systems. Three branch-screening methods (reference ratio, static pressure ratio, and power loss coefficient methods) were adapted to determine if obstructions lay in four distinct areas of a branch. The areas were the hood, middle, and end sections, with the middle and end sections combined to form the fourth area. These methods were evaluated for their ability to detect obstructions in each specific section and also for their ability to detect obstructions in sections after the branch was surveyed for obstructions using a screening method. The results of this study indicate that each method is very useful in determining the presence and location of an obstruction in every section of the branch except the hood section. Each method performed poorly when determining obstructions in the hood section. However, because of the ability of the methods to detect obstructions in the other three sections, the process of elimination can be used with confidence to determine obstructions in the hood. [Description provided by NIOSH]
• Subjects:
  Air Movements Air Pollutants, Occupational Occupational Health Safety Ventilation
• Keywords:
  Airborne Particles Air Contamination Air Flow Author Keywords: Location Exhaust Systems Exhaust Ventilation Industrial Ventilation Monitoring Obstructions Pressure Ratio Ventilation Systems

  More +
• ISSN:
  1545-9624
• Document Type:
  Text
• Funding:
  Grant
• Genre:
  Journal Article
• Place as Subject:
  California ; OSHA Region 10 ; OSHA Region 9 ; Washington
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  248-255
• Volume:
  1
• Issue:
  4
• NIOSHTIC Number:
  nn:20029006
• Citation:
  J Occup Environ Hyg 2004 Apr; 1(4):248-255
• Contact Point Address:
  Mathematics, Engineering and Science Achievement Program, Butte College, Oroville, California 95965
• Federal Fiscal Year:
  2004
• NORA Priority Area:
  Research Tools and Approaches: Intervention Effectiveness Research
• Performing Organization:
  University of Washington, Department of Environmental Health, Seattle, WA
• Peer Reviewed:
  True
• Start Date:
  19940401
• Source Full Name:
  Journal of Occupational and Environmental Hygiene
• End Date:
  19971030
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:a5ef3748c0caedb43d9d53560c7994b8fa5d02e69d715707b6011145cb56563f3c07e846f60185f2cf6987ba73587feb7916a312ea68cb9eac94289483a96ad8
• Download URL:
  https://stacks.cdc.gov/view/cdc/190083/cdc_190083_DS1.pdf
• File Type:
  [PDF - 484.12 KB ]