Bioenvironmental Engineering (BEE) Block 5 Practice Test

Protecting workers from heat stress relies on wearable cooling that actively lowers body heat. Ice garments provide direct, portable cooling as part of PPE, using ice packs or phase-change materials to absorb heat from the body and reduce skin and core temperatures during hot work. This active cooling helps prevent heat-related illness when routines or endurance make heat buildup a risk. Reflective clothing can reduce heat gain from radiant sources, but it doesn’t remove heat from the body. Circulating air or circulating water systems are cooling setups that may support cooling, but they’re less portable as frontline PPE and require additional equipment. So, ice garments are the most effective wearable protection for heat stress.