Evaluation of Occupational Exposure to Heat Stress and Physiological Responses of Workers in the Rolling Industry

Table 1: Screening criteria for heat stress exposure based on ACGIH standard (WBGT values in °C).

Work and rest cycle	Acclimatized				Unacclimatized
Work and rest cycle	Light	Moderate	Heavy	Very heavy	Light	Moderate	Heavy	Very heavy
100% work	29.5	27.5	26	-	27.5	25	22.5	-
75% work-25% rest	30.5	28.5	27.5	-	29	26.5	24.5	-
50% work-50% rest	31.5	29.5	28.5	27.5	30	28	26.5	25
25% work-75% rest	32.5	31	30	29.5	31	29	28	26.5