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Applied Occupational and Environmental Hygiene Volume 18, 2003 - Issue 4
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Original Articles

Determination of Known Exhalation Valve Damage Using a Negative Pressure User Seal Check Method on Full Facepiece Respirators

Lisa J. Delaney National Institute for Occupational Safety and Health, Atlanta, Georgia
,
Roy T. McKay Department of Environmental Health, Occupational Medicine, University of Cincinnati, Cincinnati, Ohio
&
Andrew Freeman Department of Environmental Health, Occupational Medicine, University of Cincinnati, Cincinnati, Ohio
Pages 237-243 | Published online: 30 Nov 2010

  • McKay , R.T. 1997 . Air Purifying Respiratory Protection . Chemical Health and Safety , : 20 – 25 . Sept./Oct.
  • 1998 . U.S. Department of Labor, Occupational Safety and Health Ad-ministration , Respiratory Protection. 29 CFR 1910.134, Preamble Washington, DC : OSHA .
  • American National Standards Institute . 1992 . American National Stan-dard Practices for Respiratory Protection , ANSI Z88.2 New York : ANSI .
  • National Institute for Occupational Safety and Health . 1987 . Guide to Industrial Respiratory Protection , DHHS (NIOSH) Pub. No. 87-116 Cincinnati, OH : NIOSH .
  • Crutchfield , C.D. , Ruiz , A.M. and Van Ert , M.D. 1994 . A Validation Study of Respirator Fit Testing by Controlled Negative Pressure . Appl Occup Environ Hyg , 9 (5) : 362 – 366 .
  • Crutchfleld , C.D. , Park , D.L. Jensei , J.L. 1995 . Determinations of Known Respirator Leakage Using Controlled Negative Pres-sure and Ambient Aerosol QNFT Systems . Am Indus Hyg Assoc , 56 (l) : 16 – 23 .
  • Dynatech Nevada Inc. Fit Tester Quantitative Respirator Fit Tester Operative and Service Manual , 39706 Carson City, , Nevada : Dynatech Nevada 2000 Arrowhead Drive .
  • Brueck , Scott , Lehtimaki , M. Krishnan , U. 1992 . Method Devel-opment for Measuring Respirator Exhalation Valve Leakage . Am Indus Hyg Assoc , 7 (3) : 174 – 179 .
  • Brosseau , L.M. , Ellenbecker , M.J. and Evans , J.S. 1990 . Collection of Silica and Asbestos Aerosols by Dust/Mist Respirators at Steady and Cyclic Flow . Am Indus Hyg Assoc , 51 : 420 – 426 .
  • Nelson , D.I. , Nelson , R.Y. and Lawrence , C.H. 1992 . The Effect of Internal Challenge on Exhalation Valve Performance . J Int Soc Resp Protect , 10 : 34 – 46 .
  • Los Alamos Scientific Laboratory . July 1 1974 . Respirator Studies for the National Institute for Occupational Safety and Health , LASL Pub. No. LA-5805-PR Edited by: Held , B.J. , Revoir , W.H. , Davis , T.O. , Pritchard , J.A. , Lowrey , P.L. , Hack , A.A. , Richards , C.P. , Geoflrion , L.A. , Wheat , L.D. and Hyatt , B.C. July 1 , Washington, DC : Los Alamos Scientific Laboratory . 1973-June 30 1974
  • Bellin , P. and Hinds , W.C. 1990 . Aerosol Penetration Through Respi-rator Exhalation Valves . Am Indus Hyg Assoc , 51 (1) : 555 – 560 .
  • Burgess , W.A. and Anderson , D.E. 1967 . Performance of Respirator Valves . Am Indus Hyg Assoc , 28 : 216 – 223 .
  • Myers , W.R. , Jaraiedi , M. and Hendricks , L. 1995 . Effectiveness of Fit Check Methods on Half Mask Respirators . Appl Occup Environ Hyg , 10 (11) : 934 – 942 .
  • Hardis , K.E. , Cadena , C.A. Carlson , G.J. 1993 . Correlation of Qualitive and Quantitative Results from Testing Fit . Am Indus Hyg Assoc , 44 (2) : 78 – 87 .
  • Freeman , A. 1998 . An Evaluation of Pressure-Monitored Leak Checks in Detecting Industrial Respirator Leakage , Uni-versity of Cincinnati . Master's thesis
  • Crutchfield , C. , Pham , T. and Van Ert , M.D. 1993 . Determination of Inspira-tory Pressures and Flow Rates for Work Rate-Dependent Quantita-tive Respirator Fit Testing . Appl Occup Environ Hyg , 8 (2) : 103 – 107 .
  • Crutchfield , C. , Murphy , R. and Van Ert , M.D. 1993 . A Comparison of Con-trolled Negative Pressure and Aerosol Quantitative Respirator Fit Test Systems by Using Human Subjects . Am Indus Hyg Assoc , 54 (1) : 10 – 14 .

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