Transneft Diascan has adopted a new type of inline inspection tool: the Company has developed and manufactured a new EMA-based defectoscope to find peeling areas in the pipeline coating.
The new device is equipped with a measuring system which uses electromagnetic-acoustic transducers (EMATs). Its ultrasonic diagnostic method does not require use of immersion fluid and is based on direct and inverse electromagnetic-acoustic transduction. This allows the new defectoscope to detect pipeline coating defects sized 100x100 mm and bigger.
The works on the development and assembly of the device started in January 2015 and lasted till August 2018. During the preliminary and acceptance testing, the defectoscope proved its weather resistance (temperatures from 40ºС below zero to 60ºС above zero) and mechanical damage resistance. The device successfully passed on-site tests at the Company's test ground as well as within a section of Transneft Urals’ pipeline.
The EMA-based defectoscope intended for detection of peeling areas in the pipeline coating is the eighth tool type in the portfolio of inline inspection tools developed by Transneft Diascan. Today, the Company's fleet has about 90 devices, among them multichannel geometry tools with a navigation system, pipeline positioning tools, ultrasonic, magnetic, combined magnetic and magnetic-ultrasonic defectoscopes, as well as instruments for multiangle examination of pipe walls.