The second type is a portable blower. The main advantage of a blower, aside from portability, is minimal set-up time. Increases in air speed have no effect on the body temperature of workers wearing vapor-barrier clothing. Flat black surfaces absorb heat more than smooth, polished ones. Having cooler surfaces surrounding the worker assists in cooling because the worker's body radiates heat toward them.
Training is the key to good work practices.
Unless all employees understand the reasons for using new, or changing old, work practices, the chances of such a program succeeding are greatly reduced. Hot jobs should be scheduled for the cooler part of the day, and routine maintenance and repair work in hot areas should be scheduled for the cooler seasons of the year. Use relief workers Use worker pacing Assign extra workers and limit worker occupancy, or the number of workers present, especially in confined or enclosed spaces.