Transneft Diascan has commissioned the 36-MSK.10-00.000 combined magnetic inspection tool with speed control. This device allows for in-line diagnostics of oil trunk pipelines, petroleum products pipelines and gas pipelines with an outer diameter of 914.4 mm (36 "API) and 965.2 mm (38" API).
The combined magnetic inspection tool detects defects of pipelines located at arbitrary angles relative to the longitudinal axis of the pipeline. During the inspection, the tool can move in both a fluid flow and a gas flow. The speed control that is included in the design of the tool enables its use in gas pipelines. It keeps the speed of the inspection tool within the working range (up to 4 m/s).
The inspection tool includes three magnetic sections: one of them has axial magnetisation (MFL), and two others have circumferential magnetisation (TFI). The tool can also be operated in either MFL or TFI mode.
This 36" tool has expanded the range of combined magnetic inspection tools with speed control that can be operated in explosive areas. In 2019, Transneft Diascan put into operation a similar tool for inspection of pipelines with an external diametre of 32" and 34" according to the API standard (32" according to GOST).