“This technology has equipped man with an almost prescient capacity to identify wear, weakness and disease in machines, structures and bodies long before they would otherwise become visible and, most importantly, long before they case damage” says Wernher Le Hanie, a Thermographer at Alexander Forbes Risk Services.
Pioneering the use of infrared thermal images in South Africa has allowed Infrared Inspection Systems (IRIS), a division of Alexander Forbes, to lower the cost of insurance by identifying breakdown in complex or invisible systems before they happen.
“Historically we only knew when there was a problem when furnaces started melting their casings, aircraft engines caught fire, dam walls burst, or herds of cattle were already infected with foot and mouth. By then it was too late, the damage was done and everything needed to be replaced at considerable cost” says Le Hanie.
Infrared technology allows a thermal image to be taken of almost any operational, mechanical, scientific, geographic or organic system, showing areas of stress in colours corresponding to specific temperature ranges.
Knowing what the optimal temperature ranges should be for the different parts of various systems, “enables us to identify areas experiencing abnormal levels of stress before they break, burn, blow up or die, disrupting production lines, leaking, going off or killing animals or humans – and costing millions of Rand in the process” explains Le Hanie.
Applications of this technology include:
- Identifying the origins of damp and leaks in buildings
- Temperature differences and therefore weaknesses and stresses on distribution boards
- Counting animals at night or finding animals in dense bush or from the air. For example, Panjo, an escaped tiger, was tracked and found in dense bush using infrared technology in Mpumalanga in July 2010
- Spotting diseases like foot and mouth and avian flu before they spread and infect others
- Pinpointing the hottest part of the fire to douse first
- Locating electrical or other circuit or systems weaknesses in factories or machines before there is a breakdown
- Research and development of new systems and products
- Identifying metal fatigue on ships and planes ahead of failure or breakdown
- Finding weaknesses in roads, bridges, rail tracks and other infrastructure ahead of collapse or subsidence
- Enabling hunters or military personnel to see in the dark, thick bush or grass.
“Considering that this technology can even identify rotten eggs and sour milk or spot unsealed cans, tins or leaking gas the implications for reduced insurance bills through preventative maintenance speak for themselves” concludes Le Hanie.