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Thermographic Monitoring of Refractory Lined Petroleum Refinery Equipment

From Flir Systems Incorporated
 

 
Infrared thermography is used throughout the petroleum refining industry and has a proven track record of cost saving in many areas of the business. This paper describes the examination and monitoring of refractorylined process vessels, piping, fired process furnaces, and flue gas ducting. Refractory is a temperature-resistant lining similar to concrete that is used to line refinery equipment that operates at very high temperatures. The refractory lining protects the outer shell of the piping and vessels from the hot gas and catalyst circulating inside the process plant. Failure of refractory linings can have very serious consequences. In-service monitoring of the condition of the refractory lining is achievable using infrared thermography. This paper describes the five-year monitoring program initiated on a fluid catalytic cracking unit (FCCU) at a UK refinery. The program enabled the refiner to plan the work scope for a planned shutdown well in advance of the actual event. Previously, all refractory repairs during planned shutdowns had been as a result of visual internal inspection after the unit had been shut down.
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