About the Project
“Bovanenkovo — Ukhta” and “Ukhta — Torzhok” trunkline systems that are part of the Yamal project.
The multi-line gas transmission system is intended for transportation of gas from the Yamal Peninsula to the central regions of Russia. Yamal gas accounts for almost 20% of Russian natural gas resources.
Total route length - over 2,400 km
Gas pipeline length: 1,100 km
Pipe diameter: 1,420 mm
Pressure: 11.8 MPa
Designed capacity: 140 bcmpa
Gas pipeline length: 1,300 km
Pipe diameter: 1,420 mm
Pressure: 9.8 MPa
Designed capacity: 81.5 bcmpa
Average temperatures range from -23 to -27°C in January and +3 to +9°C in July. The absolute minimum temperature on the coast of the Baidarata and Ob Bays is -58°C.
The Yamal winter lasts almost 8 months.
Permafrost and swamps.
The name of the Yamal Peninsula is derived from Nenets words “ya” (earth) and “mal” (end), meaning “the earth’s end.” The climate of the peninsula fully justifies its name. The distinctive features of this territory are cold and long winter, cool and short summer, and strong winds. Moreover, Yamal is swampland with permafrost. Gas pipeline construction is carried out in extremely difficult natural and climatic conditions.
Crossing via the Baidarata Bay
The gas route extends across the bottom of the Baidarata Bay, which is one of the most challenging sections for engineering operations. Summer temperatures of the water surface reach 5-6°C. From October through June, the water is almost fully icebound. The boundary of stable ice sheet changes each year. The submerged crossing of the gas pipeline via the Baidarata Bay consists of offshore and onshore sections. The total length of the gas pipeline crossing via the Baidarata Bay is 72 km, the length of the offshore section is 67 km.
Construction of the gas pipeline crossing via the Baidarata Bay became Russia’s first unique and successful experience in the laying of the submerged gas trunkline with a large diameter (1,219 mm, wall thickness - 27 mm) in the conditions of the arctic shelf.
Operational delivery of pipes with concrete ballast coating was carried out specifically for this section of thе gas pipeline. At the initial stage of project implementation, Russian pipes were shipped to Scotland for concrete weight coating at the plant operated by Bredero Shaw. They were delivered on special customs terms and shipped back to the construction site in Russia. Later, concrete weight coating of some of the pipes was applied with the new technology developed at Moscow Pipe-Coating Plant OJSC.
Pipes with the diameter of 1,420 mm designed for the operating pressure of 120 atm are used in the gas pipeline construction at overland sections. Pipes made of K65 (X80) grade steel were used in such large volume (over 1,500 km) in construction for the first time in the world. This enabled 12% reduction of metal consumption in the project. A pipe made of K65 grade steel with a diameter of 1,420 mm weighs 13.5 tons, a pipe made of K60 grade steel - 15.2 tons, which simplifies construction and installation and reduces transportation costs.
Additionally, such technological solution allowed doubling the flow capacity of the gas pipeline.
The decision to increase the volume of construction with utilization of pipes made of K65 grade steel was made after extensive tests, including ground tests.
Russia’s first unique pipe intended for the Bovanenkovo-Ukhta project was manufactured at Vyksa Steel Works and delivered to the construction site in 2009.
Deliveries to the Project by Pipe Innovation Technologies
Pipe Innovation Technologies LLC supplies pipes and fittings for the Bovanenkovo-Ukhta and Ukhta-Torzhok projects. Deliveries are carried out according to the results of Gazprom tender procedures. The Company delivered 79.212K tons of large-diameter pipes for the Bovanenkovo-Ukhta gas pipeline (second string). Pipes made of K65 grade steel accounted for the main part of deliveries amounting to 77.572K tons.
Additionally, small volumes were delivered for the first string of the Bovanenkovo-Ukhta and Ukhta-Torzhok gas pipelines.
The first string of the Bovanenkovo-Ukhta gas pipeline was put into operation in October 2012.
Currently, the construction of the second string and eight compressor stations is underway. The construction of the gas trunkline system is to be completed in 2016.
according to PIT and Gazprom
Delivered totally (tons):