A Publication of WTVP

It’s hard to believe that just a couple of months ago I was stuck in more than a few inches of snow outside the door of our facility. What’s more amazing, I’ve already found myself wondering how long the heat will last. OK, call me a malcontent. But the heat is upon us and many of us will be working rigorously while exposed to the temperatures of summer.

In general, a worker’s body protects its core temperature against high external temperatures by changes in blood circulation and sweating. When workers perform physical activities—just like an athlete playing a game—less blood is available to flow to the skin to dispose of body heat. Sweating kicks in and helps cool the body. Fluids and salts are lost through sweating and need to be replaced by drinking more water, sports drinks with electrolytecarbohydrate solutions, etc.

Several worker characteristics also come into play when it comes to heat exposure, including age, weight, physical fitness and health status, medications and alcohol intake.

Workplace factors also combine to determine how workplace heat affects work—including temperature, humidity, radiant heat (such as from the sun, a hot engine or a welding torch), air circulation and workload (level and type of activity). When these factors are in play, care needs to be taken to allow the body to maintain a sufficiently cool state and avoid several types of heat-related illnesses. Heat related illnesses include (and may occur simultaneously):

Workers with these conditions may become irritable, confused, giddy, nauseous or dizzy, and may experience headache and muscular pain and/or fatigue. Pulse may be weak and slow, and blood pressure often drops. The worker’s complexion will often be pale or flushed. Often the skin will be moist and clammy, except with heat stroke, when the body fails to sweat.