Transneft Kama Region has completed scheduled repairs of the Kholmogory – Klin and Surgut – Polotsk oil trunk pipelines (OTPs).
The works were carried out in Perm Territory, Sverdlovsk and Kirov Regions, the Republics of Tatarstan and Udmurtia.
During a planned shutdown of the Kholmogory – Klin oil pipeline, twelve defects were cut out, two gate valves and five substandard pressure taps were replaced, two gate valves and one check valve were repaired. Work was carried out to eliminate four substandard air escape valves, thirteen welded connections and chops with inwards protrusion. At the Bolshaya Sosnova LODS, the mainline pump unit was replaced.
At the Surgut – Polotsk OTP, works on replacement of three gate valves, midlife repairs of six gate valves, cutting out sixteen defects, replacement of twenty three substandard pressure taps and five safety valves, replacement of two substandard air escape valves, as well as replacement of four gate valves with a diameter less than 300 mm at the Lysva PS, were carried out. At the Perm LODS, a crossover line between oil pipelines together with four gate valves was eliminated, the mainline pump unit was disconnected. For subsequent works on equipment replacement, the MPU at the Platina LODS and the booster pump unit (BPU) at the Arbatskaya PS were disconnected.
As part of the repair works, 44 repair pits were dug out, more than 400 units of equipment were involved. The works were carried out 24/7 by repair teams of the Perm, Udmurtia, Kazan, Almetievsk and Romashkino Regional Oil Pipeline Directorates of Transneft Kama Region. Aslo used was technical assistance provided by Transneft Siberia, Transneft Urals, Transneft Volga Region, Transneft Druzhba and Chernomortransneft.
The planned works were completed as part of Transneft Kama Region’s comprehensive technical upgrading, revamping and overhaul programme. The goal was to maintain operational reliability of the trunk pipelines. Oil transportation was resumed on schedule and under the standard protocol.