CRA-clad pipes are increasingly used for the transport of hot and corrosive materials, as cladding provides a higher resistance to degradation caused by corrosion. Because of the nature of the corrosion resistant alloys (CRA) used for clad pipes, the inspection of the resulting dissimilar girth weld poses a particular challenge, to which the petrochemical industry has been searching for a simple and reliable solution. Olympus has developed tools to increase the capacity for detection and sizing of flaws located at the root, in the volume, and on the surface of the dissimilar weld. These tools include dual matrix and dual linear array probes combined with off-the-shelf ultrasonic phased array instruments and software, all packaged in a friendly and accessible manner. This paper presents how accessible advanced ultrasonic phased array technology contributes to the improved integrity of CRA-clad pipes used in infrastructures as pipelines, LNG and refineries.
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