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Heat Stress Evaluation of Two-layer Chemical Demilitarization Ensembles with a Full Face Negative Pressure Respirator.
MedLine Citation:
PMID:  24705801     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
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 [°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.
Authors:
Oclla Michele Fletcher; Ryan Guerrina; Candi D Ashley; Thomas E Bernard
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2014-4-05
Journal Detail:
Title:  Industrial health     Volume:  -     ISSN:  1880-8026     ISO Abbreviation:  Ind Health     Publication Date:  2014 Apr 
Date Detail:
Created Date:  2014-4-7     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  2985065R     Medline TA:  Ind Health     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
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