TRUST SERVICE +7 (495) 741 48 17 info@stng.ru About company Activities Projects Procurement Social responsibility Press center Career JSC "STNG" introduces an advanced means of mechanized ultrasonic quality control of welded joints 02.08.2018 Specialists of Stroytransneftegaz have successfully completed training in mechanized ultrasonic testing (MUZK) of welded joints at the Engineering and Technology Center in the city of Gagarin. The installations allow to determine with high accuracy the nominal length, height and depth of occurrence of defects in welded joints. The implementation of ultrasonic testing methods is based on the channels of the time diffraction method (TOFD) and the head wave. Today, TOFD is one of the most advanced methods and is mainly used for inspection and diagnostics of welds in pipelines and tanks. The high sensitivity of T O FD greatly facilitates the detection of defects typical of automatic welding methods. According to the requirements of PJSC Gazprom, this year the MUZK will be used in the construction of gas pipelines as the main method of testing welded joints and will partially replace X-ray inspection. In the near future, four sets of equipment for control of welded seams, made by high-performance automatic welding complexes, will appear at linear construction sites. The introduction of MUZK systems will allow to quickly determine the compliance of welded joints with the requirements of state and industry standards and promptly respond to changes in the quality of welding. The next stage of a full-fledged transition to a new control method will be the implementation of an engineering assessment of the critical state of welded joints, which will make it possible to refine the quality assessment standards taking into account the actual physical and mechanical characteristics of welded joints. Share this Tweet OUR PARTNERS +7 (495) 741 48 17 info@stng.ru 196210, St. Petersburg, st. Starting, 8, letter A 121357, Moscow, st. Vereiskaya, 29, bldg. 134, BC "Vereiskaya Plaza III" © 2019 "StroyTransNefteGaz" a full range of works within the framework of infrastructure projects in the oil and gas industry