Thermal stress includes both heat and cold stress. These conditions arise when temperatures become too extreme for the body to handle and try to compensate for.
A combination of environmental influences such as air temperature, radiant heat, humidity and air velocity when coupled with metabolic heat generation and effects of clothing, may result in heat strain. Early symptoms include increased sweating and heat rash, while mild heat illness includes fatigue, dizziness and cramps. Heat exhaustion is a mild form of shock with symptoms including extreme weakness or fatigue, uncoordinated action giddiness, nausea, headache and a weak rapid pulse.
Heat stroke occurs when the body’s thermoregulatory system has failed to prevent core body temperatures rising to critical levels above 40°C. Symptoms include lack of sweating and hot dry skin, irrational behavior, loss of consciousness and convulsions. The two primary risk factors are hydrations and then acclimatisation.
People, Process, Safety
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