Meeting of gas transmission companies of PAO "Gazprom"

On May 17-18, 2017 an operational meeting of PAO "Gazprom" was held at LLC "Gazprom transgaz Stavropol" on the results of work of gas transmission companies for the exploitation of the linear section of trunk gas pipeline systems and trunk condensate pipelines in 2016, tasks for 2017, acquired experience and problems.

Representatives of "NPC "VTD" took part in the meeting.

In their report, they summarized the results of collaboration with the companies of PAO "Gazprom" in 2016 and set out the problems that come with In-Line Inspection.
The quality of pipeline cleaning at the preparation stage was emphasized as the key problem.
Modern tools of LLC "NPC "VTD", based on magnetic fields dispersion method, are capable of reaching the accuracy in anomalies identification up to 90 %. Although the insufficient quality of cleaning of the interior pipeline wall affects the validity of inspection. Since the perspective of applying new development, based on electromagnetic-acoustic (EMAT) method, is being considered in PAO “Gazprom", the quality issue of pipeline cleaning is becoming ever more relevant, as the validity of inspection by EMAT-tools is even more dependent on the interior cavity of the pipeline.

In the context of solution to this problem, LLC "NPC "VTD" is implementing the programme on developing not only more effective cleaning tools of new generation, but also the equipment, capable to estimate the quality of cleaning of pipeline walls before carrying out inspection.

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