| An evaluation of industrial ventilation branch screening methods for obstructions in working exhaust systems. | |
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MedLine Citation:
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PMID: 11549133 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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This research evaluated the effectiveness of screening methods in identifying obstructed branches in industrial ventilation systems. These methods were divided into two categories: pressure comparisons and pressure ratio comparisons. The first category contained techniques that compare measured static pressures with the corresponding design static pressures or with previously measured pressures. Certain aspects of the method suggested in the Industrial Ventilation Manual were also tested. The second category compares the ratios of two measured pressures and includes the new reference ratio method. Data were collected from six industrial ventilation systems. Four of the systems were used to control wood dust, and two were used to control metal shavings from a saw-sharpening operation. Each system was tested for naturally occurring or deliberately inserted obstructions. Appropriate static and velocity pressures were measured to calculate each troubleshooting method's parameter. The change in the parameter was compared with a range of thresholds for the test cases. Receiver operator characteristic curves and bootstrapping techniques were used to identify the best method for determining the presence of obstructions or alterations. The pressure ratio methods were found to be substantially superior to the pressure comparison methods at detecting obstructions. |
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Authors:
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D W Booth; S E Guffey |
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Publication Detail:
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Type: Evaluation Studies; Journal Article; Research Support, U.S. Gov't, P.H.S. |
Journal Detail:
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Title: AIHAJ : a journal for the science of occupational and environmental health and safety Volume: 62 ISSN: 1529-8663 ISO Abbreviation: AIHAJ Publication Date: 2001 Jul-Aug |
Date Detail:
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Created Date: 2001-09-10 Completed Date: 2002-01-14 Revised Date: 2007-11-14 |
Medline Journal Info:
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Nlm Unique ID: 100939625 Medline TA: AIHAJ Country: United States |
Other Details:
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Languages: eng Pagination: 401-10 Citation Subset: IM |
Affiliation:
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Mathematics, Engineering, and Science Achievement Program, Butte College, Oroville, CA 95965, USA. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Humans Occupational Health* Pressure ROC Curve Ventilation* |
| Grant Support | |
ID/Acronym/Agency:
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1 RO1 OH03165/OH/NIOSH CDC HHS |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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