PMT 103A Industrial Hygiene Practice Test

Preventing heat-related illness focuses on reducing heat load and supporting the body's cooling and fluid balance. Hydration is essential because keeping fluid levels helps maintain blood volume and enables effective sweating, which cools the body. Acclimatization allows the body to adapt to warmer conditions over several days to weeks, improving sweating efficiency and lowering heart rate during work at a given effort. Providing shaded or cool rest areas reduces radiant heat gain and gives workers a place to recover, helping to lower skin and core temperatures between workloads. Increasing exposure duration, on the other hand, would raise the amount of time the body is exposed to heat, increasing heat load and the risk of heat illness. So the option that is not a common protective strategy is increasing exposure duration.