Survey of a 48 inch line

Working as a sub-contractor to Cooperheat MQS, Plant Integrity Ltd carried out an inspection of a 48in diameter brine line. The photographs show the transducer ring assembled on the pipe just before bends leading in one case into a road crossing and in the other into a bayou crossing. (In the latter case, the testing was done in close proximity to a large alligator!)

Despite the presence of two bends in each case, Teletest was able to cover the full extent of the crossings. In the case of that under the bayou, this meant 'shooting' more than 26m on pipe submerged in water.

A problem of particular concern to the oil industry is corrosion at supports. This line is clamped to saddles with a neoprene interlayer. Teletest was able to 'shoot' past the supports, the signal being unaffected by them. This meant that corrosion in the support area, either over the saddle or under the clamp could be detected.

Cooperheat MQS' customer, Loop LLC, based in Cut Off Louisiana, were delighted with Teletest's performance.