Most people working in extreme conditions know how to identify the early warning signs associated with heat stress, such as headaches and lethargy. However, Curtin University researchers Graham Bates and Veronica Miller have devised a thermal index to predict the likelihood of getting sick.
Firstly, an instrument is used to read air temperature, wind speed, radiant heat and humidity at any location. A formula is then applied to the readings to create a final score. If the score is 140 or above, the environment is considered safe for work. When a score of 120 or below is recorded, preventative action needs to be taken.
The researchers also worked with Pilbara Iron employees to determine their level of hydration at work, with some surprising results.
"We found a lot of people were dehydrated before they even started work!" Dr Bates said.
"When you consider that some of these men sweat up to eight litres a day, they are putting themselves at risk by starting the day already dehydrated."
The simple solution? Drink lots of water and try to stay as cool as possible. Most importantly, keep a close eye on yourself and your mates and look for the early signs of distress as heat exposure can rapidly lead to severe illness and even death.
If you are not sure what to do, start by reading the Health Topics on the Pilbara Health website, check out the Pilbara Health CD-Rom or contact the health and safety team on your site.
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