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Cited by 11Thermoregulation and physiological responsesOccupational Health and Safety in WorkplacesEffects of Environmental Stressors on Livestock

Estimation of heat stress in Tanzania by using ISO heat stress indices

Kähkönen, E., Swai, D., Dyauli, E., Monyo, R.·1992·Applied Ergonomics
DOI 10.1016/0003-6870(92)90080-f
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Abstract

The aim of this study was to evaluate the usefulness of the ISO heat stress standards in estimating the heat stress and strain in workplaces in Tanzania. Another aim was to select and to develop simplified methods for measuring physiological parameters in developing countries. The methods were tested in four hot factories and at a construction site. It seems that in tropical working environments the climatic conditions for which the ISO 7933 standard is applicable are too narrow. For instance, the mean skin temperature was incorrectly estimated by ISO 7933. An approximate analysis of the working situation can nevertheless be carried out by assuming the mean skin temperature to be 34.5 degrees C. During the study, heat stress and strain were not as high as expected; deep body temperatures were usually lower than 38 degrees C, sweat rates lower than 400 g/h and heart rates below 100 beats/min for about 72% of the measuring time. This is due to the job rotation of the workers and the long rest periods, because the number of workers is large in the factories, and the weather was not at its hottest during the survey.

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  • At the global level, our findings are consistent with the level of summer heat exposure (hourly mean WBGT values) reported at outdoor construction sites in other studies in tropical and subtropical countries.

    “At the global level, our findings are consistent with the level of summer heat exposure (hourly mean WBGT values) reported at outdoor construction sites in other studies in tropical and subtropical countries (Kähkönen et al., 1992; Inaba and Mirbod, 2007; Miller and Bates, 2007; Maiti, 2008; Pérez-Alonso et al., 2011; Rowlinson and Jia, 2014; Venugopal et al., 2016).”

    From Assessment of Heat Stress Exposure among Construction Workers in the Hot Desert Climate of Saudi Arabia (2019) · cites this paper as Kähkönen et al., 1992

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Authors
Kähkönen, E., Swai, D., Dyauli, E., & Monyo, R.
Venue
Applied Ergonomics
Publisher
Elsevier BV
Published
1992-04
Volume
23
Issue
2
Pages
95-100
ISSN
0003-6870 (ISSN-L)
DOI
10.1016/0003-6870(92)90080-f
OpenAlex
W1967963524
Cited by
11
References
13
Citations by year
2026: 1 · 2020: 2 · 2019: 1 · 2018: 2 · 2014: 1 · 2012: 2
FWCI
0.00
Type
journal article
Language
en
Open access
closed
Licence
Locations
  • Applied Ergonomics (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Health Sciences › Medicine › Physiology › Thermoregulation and physiological responses
  • Health Sciences › Health Professions › Occupational Therapy › Occupational Health and Safety in Workplaces
  • Life Sciences › Agricultural and Biological Sciences › Animal Science and Zoology › Effects of Environmental Stressors on Livestock
Keywords
heat stress, ISO 7933, construction workers, mean skin temperature, deep body temperature, sweat rate, heart rate, physiological monitoring, job rotation, rest periods, Tanzania

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