Work operations involving high air temperatures, radiant heat sources, high humidity, direct physical contact with hot objects, or strenuous physical activities have a high potential for inducing heat stress in employees engaged in such operations. These activities are often conducted in the following locations: steam tunnels; sections of the Central Power Plant; pipe chases; some mechanical rooms; some kitchens; outdoor construction activities, particularly on roofs; and outdoor construction activities that require the use of protective clothing.

The risk of heat-induced illnesses and injuries may be increased and productivity reduced in situations when the total heat load exceeds the capacities of the body to maintain normal body functions. The purpose of this program is to assist departments in eliminating or reducing heat stress risk factors.

Reference Regulations: OSHA Technical Menu Section III: Chapter 4