Abstract
Heat stress assessment in the work place is of vital importance for the well-being of industrial workers and consequently the optimum performance of the industrial facilities. A methodology for determining the heat stress in a large number of factories is presented. The Wet Bulb Globe Temperature (WBGT) index was adapted in this study. Detailed strategy is given for proper and efficient assessment. The data were carefully analyzed in the light of set international standards and the degree of compliance of the facilities surveyed. Furthermore other factors such as the type of industry, air-conditioning and outdoor conditions which affect the indoor situation, were also investiated.