Friday, September 23, 2016

Pipeline inspection: crack detection technologies

Piping inspection: Crack Detection Technology
High pressure oil and gas pipelines are susceptible to develop crack defect regardless of coating. Crack Inspection Technology for liquid pipelines is ULTRASCAN.
Phased Array Technique is the most advanced Ultrasonic Technique.  Used for thickness measurement as well as Crack detection and sizing.
It consists of multiple UT elements within a common sensor with simultaneously firing modes. Controlled focus and direction of UT waves will helps in identifying maximum resolution of wall thinning and corrosion. We are also able to detect complex crack features by adjustable firing modes and angles form the same sensor.
Electromagnetic Acoustic Transduction
Electromagnetic pulses generate ultrasonic guided waves within a pipe wall. This will provide a highly accurate crack detection, sizing and discrimination. And the sensors are also designed in such a way that the signal to noise ratio must be maximized. Sensor signals are then aligned and correlated. 

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