Critical vessels in refineries operate at high temperature and pressure are at risk of failure as joints and refractory degrade. The consequences of undetected failures can be very serious. Conventional methods like vessel skin thermocouple or Fibre Optic sensors are typically utilize wired or fibre optic networks and employ point sensors which only monitor the temperature of discrete points on the outside of a vessel. This can result in inaccurate measurements due to skin temperature gradients.
In addition, failures of traditional sensors leave dangerous holes in overall monitoring schemes until replacement can be made. Missing points in the monitoring scheme put the critical vessel at risk when unexpected hot spots arise.
Non-contact infrared thermal imaging is more robust, more reliable and easier to maintain. It is more modern with technological advantages such as graphical visual displays, historical archiving and trending, and easy integration to DCS. It allows operators of high-temperature and high-pressure vessels to see, in colour, real-time thermal behaviours of equipment. This insight is unavailable with traditional system like Fibre Optic or Skin Thermocouples, giving infrared thermal imaging an edge when it comes to early detection of possible failures. Thermal imaging systems go further by providing a more complete look at the temperature profile of the vessel- highlighting where potential dangers are.
At a Glance
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