Industrial Construction

The LNG plant
2014 marked Velesstroy LLC contract award with “South Tambey LNG” (consortium Velesstroy, Technip, JGC, Chiyoda) for construction of one of the global largest liquefied natural gas plant.
The plant with a capacity of about 16.5 million tons of LNG is based directly at South Tambey field on the shores of the Gulf of Ob.
Under the awarded contract Velesstroy performs piling, specifically installation of steel tubular, specifically installation of steel tubular piles with diameter from 530 mm to 273 mm and diameter from15,364 m– to 328700m, and installation of 13 150 vertical heat stabilizer. When piles are installed mount assemble concrete pile heads in number of 2 395, each - 35 t weight. Also under the contract Velesstroy carries out concreting with a scope > 73 000 m3, installation of steel structures inside shelters and building and perfoms works on corrosion resistance in a scope of 105 000 m2 and fire curtain installation in the scope of 21 500 m2. The works package includes installation of 22 assembled process modules, with total weight near 115 000 t, installation of main cryogenic heat exchange with weight of 420 t, pipes welding and installation – more than 26 000 welds! At the highest point of these construction works more than 3 200 and 600 machinery units were involved .
Velesstroy has built 3 canteens per 500 people each at the site as well as check points at each site access point.
The distinctive feature of the building is using modular assembly technology principle, which significantly reduces the construction costs in the Arctic and optimizes project implementation schedule. The industrial complex will include three gas liquefaction train capacity of 5.5 million tons per year each. The first phase is planned to be launched in 2017, second in 2018 and third in 2019.
Ore Dressing Plant Pavlik

PAVLIK mining and refining facility is the northernmost site of the Russian Federation located in Magadan Region. Federal or local authorities are reliant on that as the anchor project for ahead-of-time development of Arctic territories. The field reserves are appraised to be 150 tons, the facility first train will be designed for 3 tonnes of gold per year. VELESSTROY worked on the site under the conditions when winter temperature was down to minus 58 and summer featured torrential rains and floods. When construction was ongoing, we encountered logistics issues to supply cargoes to the site, and design issues. And even though VELESSTROY firstly built such a facility from scratch – we passed through all the hard aspects successfully, approximately a thousand of people worked during peak time of construction, and 150 units of construction equipment were involved. In October the entire gold mine facility was commissioned – tailings dump and main building of gold extraction works complete with associated infrastructure. First 800 kilos of gold will have been produced even by the end of 2015.

Building workshop

Construction work in the Arctic is unique due to unpredictable climatic conditions. To complete construction work on time, it was decided to build constriction workshops that would a venue for construction works in strong frosts and at gale storm winds.
In 2014 Velesstroy concluded ЕРС-contract with “Sout Tambey LNG” for construction of temporary facilities.
Under this EPC contract Velesstroy has built three workshops at the marshalling area. The main production building size (area) is 105 х 120 meters and the height is 35m, it is based on piles in quantity of 756 pieces and 23 meters long each. Total weight of steel structures is of production building is 3 500 t. The building is equipped with 10 cranes with lifting capacity 10 tons and 10 cranes weighing 20 tons which are designed for assembly of main trains. Besides the main production building another pipe fabrication building was built with dimensions 100 x 18 m and a height of 15 meters, based on the 23-meter piles, in quantity of 216 pieces. Also the secondary production building with dimensions 72 x 18 meters and a height of 25 meters was built basing on 23-meter long piles, in quantity of 156 pieces. Besides the canteen was built for 800 people, as well as garage for self-propelled modular trailers and storage area for heavy weight hoisting equipment.
The Jetty site is another place for Velesstroy construction activities - production facility for welding pipes with dimensions 102 x 34 meters and a height of 24 meters, based on piles 23 meters long in quantity of 324 pieces. The facility is equipped with 8 cranes with lifting capacity 20 t. Total weight of steel structure of pipes welding production facility is 800 t.

Amur Gas Processing Plant

July 2017 heralded a contract award for the construction works and installation of cryogenic gas separation units at the Amur Gas Processing Plant in Svobodny. The new gas processing plant is to become one of the largest gas processing facilities in the world. The plant will supply gas to China, while the remaining product will be shipped to the USA. 

What is Amur Gas Processing Plant?

 • it is the largest (42 billion cubic meters of natural gas per annum) gas processing plant in Russia lying next to the town of Svobodny in the Amur region;

 • it is one of the largest gas processing facilities in the world;

 • it is a key element in the foreseen process of natural gas supply to China using the Power of Siberia gas line;

• it is a plant with astonishing process capacities (ethane production – at least 2.5 million tons per annum, propane production – about 1 million tons per annum, butane production – about 5000 thousand tons per annum, production of pentane-hexane fraction – about 200 t thousand tons per annum). 

The size of the main construction site of the plant exceeds 600 ha which is approximately equivalent to 800 football pitches. 7 lines (trains) will be constructed stage by stage, each with a capacity of 7 billion cubic meters of natural gas per annum. The first stage will see two trains put into service. After that, each year the production capacity will be expanded by one line. Each of them serves as an independent gas processing unit.

 VELESSTROY works as a construction subcontractor and conducts the whole scope of construction, installation and commissioning activities, including piling, concrete, erection and electrical works.

Ammonia plant in Kingisepp

Saint Petersburg Economic Forum 2016 witnessed a contract award for the construction of ammonia plant in Kingisepp. The facility located in the Leningrad region will become the first of the five large-scale plants in Russia, the US and Kazakhstan producing ammonia and urea fertilizers. It is expected that the plant capacity will reach 1 million tons per annum.

The project envisages installation of more than 50 units of heavy-weight equipment more than 50 tons each, with the heaviest elements as heavy as 850 tons. And as major equipment requires powerful machines, VELESSTROY personnel use a 1650 ton lifting capacity crane for this purpose. 

The Leningrad region is well-known for its tough climate conditions, as far back as in the XVII century people joked about Peter the Great building a city on a swamp. To maximize stability of foundations on the wet and clammy soils, and during the construction of particularly heavy buildings reinforced concrete piles are used. 74 thousand meters of project piling (about 9 thousand pieces) have been installed during the construction of the Kingisepp plant. 

In order to ensure that the construction site’s demand for concrete is always satisfied two batching plants have been installed, each with a capacity of 18m3/hour. As of today, more than 60% of the concrete works have been finished.

At the facility VELESSTROY is engaged into the installation of steel structures for process pipe- and cable racks. The overall weight of the structures is expected to exceed 10 000 tons. At the moment fabrication and installation of 300 km of pipelines is underway. 1360 km of cable will be required to ensure electrical and instrumentation connections of the plant. VELESSTROY is also engaged into installation of various process facilities and water treatment. Works at the compressor station, cooling tower, reformer and flare units are underway. This plant located in the Leningrad region will be the first among the five large-scale facilities in Russia, the US and Kazakhstan producing ammonia and urea fertilizers. It is expected that the plant capacity will reach 1 million tons per annum. .