From the Department of Occupational Health, School of Public Health, Tehran University of Medical Sciences, Tehran, Islamic Republic of Iran.
Abstract: (4381 Views)
This paper presents a case study to determine the efficiency of the
currently used heat stress indices in correlation with wet bulb globe
temperature (WBGT) as a permissible index at a foundry plant and to
evaluate the extent of the physiological responses such as heart rate and body
temperature in correlation with heat stress indices. The field consisted of a
foundry plant where a shift work was in operation. The results indicated that
wet globe temperature (WGT), corrected effective temperature (CET), and
predicted four-hour sweat rate (P4SR) indices have the best correlation with
WBGT index respectively, and P4SR and CET indices correlate well with
physiological responses more successfully than WBGT does in hot-dry
conditions, CET index gives the best correlation with body temperature
while P4SR is the most accurate with the heart rate.