Pi’s parent company, TWI, have been the pioneers of long-range guided wave technology, also known as long-range ultrasonic testing (LRUT), since the mid-1990s. The oil and petrochemical industry's need for a method that could detect corrosion under insulation (CUI) stimulated guided wave research. This research led to the creation of Plant Integrity Ltd and the development of the first commercial guided wave pipe inspection system, Teletest. Guided wave technology is now widely accepted and used to inspect pipes in inaccessible areas such as road and river crossings, power plant tubing, risers, offshore topside pipework, jetty lines, and refinery pipework. Plant Integrity are world experts in guided wave technology, offering services in all aspects of guided waves, including choice and optimisation of technique, limits of detection, and more. Guided wave testing uses controlled excitation of one or more ultrasonic waveforms that travel along the length of the pipe, reflecting from the changes in the pipe. It is typically used to detect corrosion, erosion, and other defects in the pipework.
- Provides 100% initial screening coverage
- Only requires local access to the pipe surface where the transducer array is to be attached
- Able to inspect inaccessible areas such as clamps and cased or buried pipes
- It works without the need to remove insulation or coating