Psychrometric limits to prolonged work in protective clothing ensembles

William Lawrence Kenney, Jr., D. A. Lewis, C. G. Armstrong, D. E. Hyde, T. S. Dyksterhouse, S. R. Fowler, D. A. Williams

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

When work is performed by workers in protective clothing, sweat evaporation is limited and body temperature rises. In an attempt to quantify the limits such ensembles place no safe work, 6 acclimated men and women walked at 30% V̇O2max (150-200 W/m2) in 2 protocols involving environmental transients. In one, ambient water vapor pressure (P(w)) was fixed at 10 torr, and after rectal temperature (T(re)) plateaued, ambient dry-bulb temperature (T(db)) was raised 2°C every 10 min. In the second, T(db) was constant and P(w) was increased 2 torr every 10 min. Critical temperature (T(crit)) and pressure (P(crit)) were defined as the T(db) or P(w) at which thermal balance could no longer be maintained and T(re) rose sharply. Each test was performed in various clothing ensembles ranging from light cotton work clothes to 'impermeable' suits. Lines connecting mean T(crit) and mean P(crit) define a limit for safe prolonged exposure/exercise for approximatelty 50% of the population in each ensemble. Similar lines, drawn to represent values 2 standard deviations below the mean, should provide critical environmental limits for 95% of the population.

Original languageEnglish (US)
Pages (from-to)390-395
Number of pages6
JournalAmerican Industrial Hygiene Association Journal
Volume49
Issue number8
DOIs
StatePublished - Jan 1 1988

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Protective Clothing
Temperature
Clothing
Vapor Pressure
Sweat
Steam
Body Temperature
Population
Hot Temperature
Exercise
Light
Pressure

All Science Journal Classification (ASJC) codes

  • Public Health, Environmental and Occupational Health

Cite this

Kenney, Jr., W. L., Lewis, D. A., Armstrong, C. G., Hyde, D. E., Dyksterhouse, T. S., Fowler, S. R., & Williams, D. A. (1988). Psychrometric limits to prolonged work in protective clothing ensembles. American Industrial Hygiene Association Journal, 49(8), 390-395. https://doi.org/10.1080/15298668891379954
Kenney, Jr., William Lawrence ; Lewis, D. A. ; Armstrong, C. G. ; Hyde, D. E. ; Dyksterhouse, T. S. ; Fowler, S. R. ; Williams, D. A. / Psychrometric limits to prolonged work in protective clothing ensembles. In: American Industrial Hygiene Association Journal. 1988 ; Vol. 49, No. 8. pp. 390-395.
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Kenney, Jr., WL, Lewis, DA, Armstrong, CG, Hyde, DE, Dyksterhouse, TS, Fowler, SR & Williams, DA 1988, 'Psychrometric limits to prolonged work in protective clothing ensembles', American Industrial Hygiene Association Journal, vol. 49, no. 8, pp. 390-395. https://doi.org/10.1080/15298668891379954

Psychrometric limits to prolonged work in protective clothing ensembles. / Kenney, Jr., William Lawrence; Lewis, D. A.; Armstrong, C. G.; Hyde, D. E.; Dyksterhouse, T. S.; Fowler, S. R.; Williams, D. A.

In: American Industrial Hygiene Association Journal, Vol. 49, No. 8, 01.01.1988, p. 390-395.

Research output: Contribution to journalArticle

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