Ultrasonic technology detects and measures defects in areas where magnetic diagnosis capabilities are limited. Using an ultrasonic sensor, a digital defect map can be taken, which allows to assess the degree of danger more accurately, taking into account its profile. This is typical for extensive areas of uniform corrosion, erosion wear and longitudinal defects. Also, the method makes it possible to detect in-wall defects such as laminations, which have different configuration, nature and hazard. These include planar laminations, surface breaking lamination, hydrogen sulfide cracking, and non-metallic inclusions.
Thus, it is important to assess the danger of these defects in order to ensure the required safety of the pipeline system and to achieve this with a minimum of labor and material costs. The answer to this task is to perform in-line inspection with the help of ultrasonic technology. Ultrasonic flaw detector with direct beam input, developed by NGPME LLC, has high accuracy of defect geometric parameters, angular position of features and distance traveled.