Inline inspection of the Kemchug – Rybinskaya section of the Omsk – Irkutsk oil trunk pipeline (OTP) that is in the area of responsibility of the Krasnoyarsk Regional Oil Pipeline Directorate (ROPD) (a subsidiary of Transneft Western Siberia) has been completed. The total length of the inspected section is about 218 km.
Two types of inline inspection gadgets (PIGs) were used for the inspection: a combined examination set (CES) and a combined examination device (CED) 1S. Operation of the combined inspection set that consists of a magnetic section and an ultrasonic section successfully combines two physical principles. The CES tool allows the evaluation of the OTP condition according to several criteria: identification of metal loss on inner and outer walls, grooves and cracks, wrinkling and dents, defects of longitudinal and transverse seams.
The data obtained in the inline inspection will be analysed by the specialists of Transneft Diascan and transferred to Transneft Western Siberia.
Inline inspection of oil and petroleum products trunk pipelines (PPTP) of Transneft Western Siberia is carried out in accordance with the standard documents and the approved annual inspection program. Systematic inspection of the technical condition of the linear portion of OTPs and PPTPs that are in the company’s area of responsibility is a priority task, the fulfilment of which ensures a high level of industrial and environmental safety and minimizes the risk of emergencies. Identification of defects allows the prompt fulfilment of the requirements of corporate technical upgrading, revamping, and overhaul (TUR&OH) programmes.
From January to April 2017, specialists of the company inspected about 1,481 km of OTPs and PPTPs using modern types of magnetic, ultrasonic, and combined PIGs: DMK, CES, CED-1, and CED-1S.
Construction of the Omsk – Irkutsk oil trunk pipeline started in 1955. The Omsk – Irkutsk OTP was the world’s longest pipeline in the 50’s of the twentieth century. It runs through five regions of Western Siberia: Omsk, Novosibirsk, Kemerovo, Irkutsk, and Krasnoyarsk regions. Via the Omsk – Irkutsk OTP, oil is now transported eastwards to the Eastern Siberia – Pacific Ocean system and supplies to the Achinsk Refinery and Uyar PMS (pipeline metering station) are provided.