This instructor's manual presented the third module in an eight module series designed for students at an advanced stage of training in the field of industrial hygiene. This module discussed thermal stress and was divided into two general topics: the characteristics of heat exchange and its effects on man; and methods for controlling thermal exposures. The first topic included heat exchange, thermal measurement, and thermal stress indices. The module contained material on the physiologic response of the human system to thermal stress and the effect of thermal stress on the human systems, factors in tolerance of heat, and other adverse effects. The thermal measurement section discussed various methods for monitoring temperature and other related environmental factors. Measuring equipment discussed included the dry bulb thermometer, thermoelectric thermometers, wet bulb thermometers, sling psychrometer, globe thermometer, and thermoanemometers. The discussion on thermal stress indices includes the effective temperature index, the heat stress index, and wet bulb globe temperature index. In the second portion of the manual methods for controlling thermal exposures were considered. Included were discussions of general administrative controls that can reduce exposure to heat stress, methods for modifying the thermal environment, and the use of personal protective equipment.
Division of Training and Manpower Development, NIOSH, U.S. Department of Health, Education and Welfare, Cincinnati, Ohio, 73 pages, 15 references