Inward Leakage in Tight-Fitting PAPRs

A combination of local flow measurement techniques and fog flow visualization was used to determine the inward leakage for two tight-fitting powered air-purifying respirators (PAPRs), the 3M Breathe-Easy PAPR and the SE 400 breathing demand PAPR. The PAPRs were mounted on a breathing machine head fo...

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Detalles Bibliográficos
Autores principales: Koh, Frank C., Johnson, Arthur T., Rehak, Timothy E.
Formato: Texto
Lenguaje:English
Publicado: Hindawi Publishing Corporation 2011
Materias:
Research Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3103902/
https://www.ncbi.nlm.nih.gov/pubmed/21647352
http://dx.doi.org/10.1155/2011/473143
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author Koh, Frank C.
Johnson, Arthur T.
Rehak, Timothy E.
author_facet Koh, Frank C.
Johnson, Arthur T.
Rehak, Timothy E.
author_sort Koh, Frank C.
collection PubMed
description A combination of local flow measurement techniques and fog flow visualization was used to determine the inward leakage for two tight-fitting powered air-purifying respirators (PAPRs), the 3M Breathe-Easy PAPR and the SE 400 breathing demand PAPR. The PAPRs were mounted on a breathing machine head form, and flows were measured from the blower and into the breathing machine. Both respirators leaked a little at the beginning of inhalation, probably through their exhalation valves. In both cases, the leakage was not enough for fog to appear at the mouth of the head form.
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spelling pubmed-31039022011-06-06 Inward Leakage in Tight-Fitting PAPRs Koh, Frank C. Johnson, Arthur T. Rehak, Timothy E. J Environ Public Health Research Article A combination of local flow measurement techniques and fog flow visualization was used to determine the inward leakage for two tight-fitting powered air-purifying respirators (PAPRs), the 3M Breathe-Easy PAPR and the SE 400 breathing demand PAPR. The PAPRs were mounted on a breathing machine head form, and flows were measured from the blower and into the breathing machine. Both respirators leaked a little at the beginning of inhalation, probably through their exhalation valves. In both cases, the leakage was not enough for fog to appear at the mouth of the head form. Hindawi Publishing Corporation 2011 2011-05-12 /pmc/articles/PMC3103902/ /pubmed/21647352 http://dx.doi.org/10.1155/2011/473143 Text en Copyright © 2011 Frank C. Koh et al. https://creativecommons.org/licenses/by/3.0/ This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Research Article
Koh, Frank C.
Johnson, Arthur T.
Rehak, Timothy E.
Inward Leakage in Tight-Fitting PAPRs
title Inward Leakage in Tight-Fitting PAPRs
title_full Inward Leakage in Tight-Fitting PAPRs
title_fullStr Inward Leakage in Tight-Fitting PAPRs
title_full_unstemmed Inward Leakage in Tight-Fitting PAPRs
title_short Inward Leakage in Tight-Fitting PAPRs
title_sort inward leakage in tight-fitting paprs
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3103902/
https://www.ncbi.nlm.nih.gov/pubmed/21647352
http://dx.doi.org/10.1155/2011/473143
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AT rehaktimothye inwardleakageintightfittingpaprs

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