Workers’ health may suffer disruption due to a heat working climate. The heat working climate provides the health impact of labor in tropical or non-tropical countries. This is because the impact of a heat working climate can occur in various industrial fields such as steel casting, coal, construction, ceramic glass and so on.
A hot working climate accompanied by heavy physical work will cause heat stress. Therefore we need a way of preventing heat stress.
Heat Working Climate
The working climate is the state of the working environment as measured by the combination of air temperature (wet and dry temperature), air humidity, airflow velocity, and radiant heat with heat production from the human body due to its work. The human body always generates heat as a result of metabolic processes. The body temperature will increase if the body heat discharge process is disrupted.
Work environment with the human body is always interchangeable heat exchange. This heat exchange depends on the ambient temperature (working climate). The work climate load received by the human body causes heat stress to the worker. This is where the work environment requires the prevention of heat stress.
Heat Stress Prevention
There is a significant difference in blood pressure increase in labor before and after exposure to heat. In addition to the blood pressure and pulse response, the thermoregulatory system in the brain (hypothalamus) responds with several control mechanisms such as conduction, convection, radiation, and evaporation in order to maintain body temperature at 36-37 degrees C. However, if exposure is left continuously will cause fatigue and will cause the control mechanism not to work anymore. And in the end, will cause the emergence of heat stress effects.
To assess the importance of heat stress prevention, take a look at the chronology below.
A person wearing protective clothing and doing heavy work in hot and humid conditions may be at risk of heat stress because:
Evaporation of sweat is limited by the type of clothing and environmental moisture.
Heat will be produced in the body, and if the heat is not lost, the body temperature will increase thereby increasing the amount of sweat produced, which can lead to dehydration.
Heart rate also increases that puts an additional burden on the body.
If the body is getting more heat than it can decrease, then the body temperature inside will continue to increase. It finally reaches the point when the body’s own control mechanism starts to fail.
The symptoms will worsen again they keep working under the same conditions.
What are the Symptoms of Heat Stress? Assess the Importance of Heat Stress Prevention
Heat stress can affect individuals in different ways, and some people are more vulnerable to it than others. Typical symptoms are:
Inability to concentrate,
Heavens are heavy – the final symptom of heat stress,
Heat exhaustion – fatigue, dizziness, nausea, headache, damp skin.
A comfortable workplace is one of the factors that support the emergence of morale. A hot and humid working environment will reduce work productivity and bring negative impacts on worker safety and health.