This paper is concerned with a new non-evasive ultrasonic transducer for measuring the wall thickness of pipelines, vessels, and sructures to provide information on the effects of corrosion and erosion. In its simplest form the system comprises of a flexible multi-element array of ultrasonic transducers an ultrasonic flaw detector, switch unit and associated cabling. Fully automated systems are now available for unmanned applications.The flexibility of the transducers allows it to be permanently bonded to areas which are diffcult to inspect by conventional means due to limited access or component geometry such a pipe bends the underside of vessels underneath cladding etc.
The system is currently in use on several offshore oil platforms and in oil and chemical plants onshore. This paper outlinesthe Wand continuing development of the system, how it is installed / deployed typical results
obtained and then concludes with the benefits that have been enjoyed as a result of the system
Keywords: Corrosion monitotig non-invasive, ultrasonic, wall thickness, permanent, flexible, erosion continuous