Heat stress evaluation of two-layer chemical demilitarization ensembles with a full face negative pressure respirator.

Details

• Personal Author:
  Ashley CD ; Bernard, Thomas E. ; Fletcher OM ; Guerrina R
• Description:
  The purpose of this study was to examine the heat stress effects of three protective clothing ensembles: (1) protective apron over cloth coveralls including full face negative pressure respirator (APRON); (2) the apron over cloth coveralls with respirator plus protective pants (APRON+PANTS); and (3) protective coveralls over cloth coveralls with respirator (PROTECTIVE COVERALLS). In addition, there was a no-respirator ensemble (PROTECTIVE COVERALLS-noR), and WORK CLOTHES as a reference ensemble. Four acclimatized male participants completed a full set of five trials, and two of the participants repeated the full set. The progressive heat stress protocol was used to find the critical WBGT (WBGTcrit) and apparent total evaporative resistance (Re,T,a) at the upper limit of thermal equilibrium. The results (WBGTcrit [degrees C-WBGT] and Re,T,a [kPa m(2) W(-1)]) were WORK CLOTHES (35.5, 0.0115), APRON (31.6, 0.0179), APRON+PANTS (27.7, 0.0244), PROTECTIVE COVERALLS (25.9, 0.0290), and PROTECTIVE COVERALLS-noR (26.2, 0.0296). There were significant differences among the ensembles. Supporting previous studies, there was little evidence to suggest that the respirator contributed to heat stress. [Description provided by NIOSH]
• Subjects:
  Energy Metabolism Heat Stress Disorders Hot Temperature Men Occupational Health Personal Protective Equipment Protective Clothing Respiratory Protective Devices Safety Ventilation
• Keywords:
  Author Keywords: Heat Stress; Chemical Protective Clothing; Respirators; Clothing Adjustment Factors; Evaporative Resistance Metabolism; Body Temperature; Etiology; Heat Stress; Humans; Men; Protective Clothing; Ventilation; Ventilation Equipment; Respirators; Personal Protection; Personal Protective Equipment;
• DOI:
  https://doi.org/10.2486/indhealth.2012-0197
• ISSN:
  0019-8366
• Document Type:
  Text
• Funding:
  Grant
• Genre:
  Journal Article
• Place as Subject:
  Florida ; OSHA Region 4
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  304-312
• Volume:
  52
• Issue:
  4
• NIOSHTIC Number:
  nn:20048542
• Citation:
  Ind Health 2014 Jul; 52(4):304-312
• Email:
  tbernard@health.usf.edu
• Federal Fiscal Year:
  2014
• Performing Organization:
  Sunshine Education and Research Center, University of South Florida
• Peer Reviewed:
  True
• Start Date:
  20050701
• Source Full Name:
  Industrial Health
• End Date:
  20290630
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:ec160052280a2a0d65acf0d4093f3f62d21610950e9c082b46551a4a1db3cceba36d13566dbf4f1311103f84b1ef21994db55a20c790e6c4e1124d40261c1b6d
• Download URL:
  https://stacks.cdc.gov/view/cdc/248972/cdc_248972_DS1.pdf
• File Type:
  [PDF - 1.03 MB ]