The construction of RVS-100 m 3 tanks is regulated by GOST 31385-2016 “Vertical cylindrical steel tanks for oil and oil products. General specifications which entered into force on March 1, 2017. This normative document replaced GOST 31385-2008 and adopted by the national standardization bodies of Azerbaijan, Belarus, Georgia and Kyrgyzstan.
In accordance with their nominal volume, RVS-100 m 3 tanks belong to the class of structures KS-2b - tanks with a volume of less than 1000 m 3, which corresponds to hazard class IV.
Vertical cylindrical tanks RVS-100 m 3 are mainly used in our country by enterprises of the oil and oil refining industry for receiving, storing and issuing crude oil and various oil products. This is the most practical kind of ground tanks, suitable for:
It is possible to build a RVS-100 m 3 as part of drainage systems for collecting rainwater or oily effluents.
RVS-100m 3 tanks, as a rule, are made of two types: with a fixed roof without a pontoon RVS-100 and with a fixed roof with a pontoon RVSP-100. The choice of the type of tank is carried out on the basis of the table of properties of the stored product - flash point and saturated vapor pressure at the storage temperature specified in the terms of reference.
If the storage of products with a flash point not higher than 55°C (petroleum, gasoline, diesel fuel for diesel general purpose and stable gas condensate) tanks without a pontoon are used, then it is recommended to equip with a light fraction capture unit (ULF) and a gas piping device (GO).
1 - wall; 2 - bottom; 3 - stationary roof; 4 - breathing valve; 5 - pontoon; 6 - sealing gate; 7 - ventilation opening.
These parameters are specified depending on the width and length of the wall sheets and the choice of a roll or sheet-by-sheet manufacturing method.
The main design parameters and weight characteristics of RVS-100 m 3 are given for the most common climatic and technological loads during operation in Russia.
The basic design of the RVS-100 m 3 tank is given for a design with a stationary frameless conical rolled roof and an annular or shaft staircase at the customer's choice.
Characteristics of RVS-100
| Nominal volume of the tank, m 3 | 100 |
|---|---|
| Standard service life of the tank, years | 30 |
| Density of the stored product, t/m 3 | 1,6 |
| Maximum temperature of the stored product, o C | 95 |
| Maximum loading height in the tank without pontoon | to the full height of the wall |
| internal overpressure(nominal), kPa | 5,00 |
| Relative vacuum (nominal), kPa | 0,5 |
| Product turnover, cycles per year | 200 |
| Estimated metal temperature, o C | -60 and above | 4 | 0,85 |
| Seismicity of the construction area, score | up to 9 |
| Wall inner diameter, mm | 4730 |
| Wall height, mm | 6000 |
| Wall: | |
| Number of belts, pcs | 4 |
| 1 | |
| Minimum thickness of the upper belt, mm | 5 |
| Minimum Thickness lower belt, mm | 5 |
| Bottom: | |
| Corrosion allowance (specified by the customer), mm | 1 |
| 5 | |
| Roof: | |
| Corrosion allowance (specified by the customer), mm | 1 |
| Minimum thickness of the central part, mm (calculated based on expected operating conditions) |
5 |
The minimum thickness of wall sheets for RVS-100 is 4 mm. The minimum recommended dimensions of the main wall sheets are 1.5 × 6.0 m.
When designing, it is necessary to take into account the stability of the tank body for an individual combination of loads, including seismic effects, the weight of the stored product, the weight of structures and thermal insulation, overpressure and the weight of snow cover.
To ensure the strength and stability of tanks during operation, as well as to obtain the required geometric shape during installation, stiffening rings are installed on the walls of the tanks.
The bottoms of vertical steel tanks with a volume of 100 m 3 can be designed flat or conical with a slope from the center to the periphery (recommended slope 1:100). At the request of the customer, it is possible to manufacture bottoms with a slope to the center of the tank.
The RVS-100 bottoms are mainly made in the form of a rolled panel from sheets of the same thickness without annular edges (the presence of sheets of different thicknesses in the rolled bottom panel is not allowed).
The nominal thickness of the plates of the central part of the bottom or the bottom without borders, minus the corrosion allowance, shall be 4 mm.
Vertical tanks with a volume of 100 m 3 are usually designed with two types of fixed roofs:
Frameless roofs can be made from carbon or of stainless steel. Use of stationary roofs from aluminum alloys is allowed.
The nominal thickness of the roof shell is determined by strength and stability calculations and must be at least 4 mm.
Branch pipes in the wall are designed for connection of external and internal pipelines, instrumentation and other devices.
For the manufacture of branch pipes and hatches, seamless or straight-seam pipes and shells made of rolled sheet are used. Holes in the wall for the installation of branch pipes and hatches must be reinforced around the perimeter with sheet overlays.
In the basic configuration, RVS-100 have two nozzles for receiving and distributing the product, which are located in close proximity to the bottom in the zone of the vertical bend of the wall. We recommend nozzles with a nominal diameter of 50, 80, 100, 150 or 200 mm.
Manhole hatches in the walls of the RVS-100 are designed to penetrate into the tank during installation or for repair work. As a standard, the tank must be equipped with at least two hatches providing access to its bottom. Tanks with a pontoon, in addition, must also have a manhole at a height that provides access to the pontoon in its repair position. It is recommended to use round hatches with a diameter of 600 and 800 mm and oval hatches with dimensions of 600×900 mm.
The number, dimensions and types of branch pipes in the roof of the RVS-100 depend on the purpose of the tank and are determined by the customer. To inspect the internal space of the tank, its ventilation during internal works, as well as for various installation purposes, the tank must be equipped with at least two roof hatches. Manholes with a nominal diameter of 500, 600, 800 and 1000 mm are recommended.
Pontoons are used in storage tanks for easily evaporating products and are designed to reduce evaporation losses. The pontoon must have supports that allow it to be fixed in two lower positions - working and repair. .
The vertical steel tank must be completed with platforms and ladders. Tanks with a fixed roof should have a circular platform on the roof or wall, providing access to the equipment located along the perimeter of the roof, and a ladder for climbing to the circular platform, as well as, if necessary, additional platforms on the roof and on the wall.
Stairs apply:
To prevent slipping, the steps of the stairs must be made of lattice metal.
A shaft ladder with a ring element with a diameter of at least 2.6 m can be used as a frame for winding rolled panels during transportation.
For the manufacture of RVS metal structures, steels are used that meet the requirements of current standards and specifications, as well as the requirements of project documentation.
Structural elements of RVS-100 are divided into the following groups:
For group A, only calm, completely deoxidized steel is used. For group B, calm or semi-quiet steel is used. For auxiliary structures, along with the above steels, taking into account the temperature operating conditions, the use of boiling steel is allowed.
The final choice of steel grades for the main structural elements is made taking into account the guaranteed minimum yield strength, rolled thickness and impact strength.
Depending on the characteristics of the stored product, the tank is equipped with equipment for various purposes:
If it is necessary to store products with high viscosity, a heating system (registers and pipelines inside the tank) and thermal insulation can be added.
To increase the safety of the product, recovery units can be used.
Degree aggressive impact environment on the elements of metal structures inside the tank and its outer surfaces, located in the open air, may vary. Therefore, the project of anti-corrosion protection of RVS-100 tanks is developed taking into account the design features, expected operating conditions and the required service life.
To protect the metal structures of the tank from corrosion, paint and varnish coatings are mainly used, as well as electrochemical protection systems using sacrificial or cathodic protection installations. It is possible to use other types of anti-corrosion coatings.
To increase the service life of the tank, an increase in the thickness of the main structural elements (wall, bottom, stationary and floating roofs, pontoons) is used due to the corrosion allowance. The corrosion allowance also varies depending on the aggressiveness of the medium.
Life time protective coatings must be at least 10 years.
Vertical tanks RVS-100000 m 3 are applied to storage of light and dark oil products at the enterprises of production and transportation of oil.
GK Gazovik offers the following versions of tanks with a volume of 100,000 m 3:
The design, manufacture and operation of vertical cylindrical tanks RVS with a volume of 100,000 m 3 is regulated by the following state standards:
In accordance with the above standards, RVS tanks can be used with working media with a density of up to 1015 kg/m 3 and at a product temperature from -65ºС to +260ºС. In addition, the RVS-100000 has the following requirements:
It is also possible to use tanks for non-standard purposes, but at the same time, the calculation of steel, VST structures, processing of internal and outer surfaces, as well as the selection of the necessary technological equipment must be carried out in accordance with the norms of the Russian Federation and meet safety requirements.
Questionnaire for the supply of vertical RVS tanks
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The main structures of vertical tanks with a volume of 100,000 m 3 are:
Auxiliary structures include:
The RVS-100000 vertical tank is a cylindrical wall installed and welded to the bottom, as well as a floating roof. Due to the large dimensions, RVS-100000 wall is made by sheet method: the tank wall is delivered to the place of installation in the form of separate rectangular steel sheets of the required size, each rolled up; at the installation site staged assembly and welding of wall elements. The tank wall has several belts, the number of which depends on the width of the wall element.
RVS-100000 bottom is a conical structure consisting of a central part and thickened annular edges with a slope of 1:100, which, during installation, go outside the wall boundaries.
RVS-100000 m 3 operated from floating double deck roof due to large diameter walls. Floating roofs are more fire and explosion safe (since there is no gas space between the product surface and the lower roof deck), reduce evaporation losses of the stored product, and also contribute to lower corrosion wear of the upper chords of the tank. The double structure of the floating roof is a single metal structure consisting of the lower and upper flooring, interconnected by ribs forming sealed compartments. A double roof can be supplied as separate radial and annular compartments, which are interconnected on site, as well as prefabricated radial boxes to reduce installation time.
Also tanks RVS-100000 m 3 can be supplied with pontoon.
External and internal surfaces are treated with anti-corrosion substances (enamel, primer), which contribute to long-term operation and reduce the corrosion rate of metal structures.
For the safe operation of tanks, the necessary tank equipment is selected separately: breathing valves, flame arresters, foam generators, filling and drain fittings, instrumentation, etc.
Specialists of the Gazovik Group of Companies will calculate and select for you the optimal configuration of the vertical steel RVS tank with tank equipment according to the completed Questionnaire for the RVS.
To order and buy the vertical steel tank RVS-100000 m³, you need to contact us by free hotline 8-800-555-43-93 or by e-mail [email protected]
We will also select for you the fastest delivery of a vertical tank by rail or road to any city in Russia (Moscow, Yakutsk, Irkutsk, Surgut, Novosibirsk, Vladivostok, Murmansk, Kazan) and to the CIS countries (Kazakhstan, Ukraine, Belarus).
Tank Design Plant StroyTechMash designs and manufactures vertical tanks RVS and RVS with a volume of 100 to 5000 cubic meters. at our own production facilities. We also carry out professional installation, insulation and application of an anti-corrosion coating on the internal and outer surface vertical tanks of RVS type.
Metal cylindrical tanks of vertical design are manufactured in accordance with the requirements of the Safety Rules PB 03-605-03 "Rules for the construction of vertical cylindrical steel tanks for oil and oil products" and GOST 31385-2008 and GOST 52910-2008 "Vertical cylindrical steel tanks for oil and oil products" .
Plant "StroyTehMash" manufactures metal structures of tanks by rolling. The panels of the wall and bottom are welded on the slipway and twisted on a rolling machine into a roll on metal carcass, inside which a spiral staircase is usually placed.
Tanks are manufactured in volumes from 10 cubic meters. (10 tons) up to 5000 cubic meters (5000 tons). Construction of vertical tanks with a volume of more than 5000 cubic meters. they are produced directly at their location using the sheet-by-sheet assembly method, since transportation is quite expensive and, depending on the distance, can cost more than the tank itself.
In the photo, the vertical tank RVS-2000 consists of two coils and a petal roof.
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Designation |
Volume, cu. m |
Diameter, mm |
Height, mm |
Thickness walls, mm |
Number of belts, pcs. |
Weight, kg |
Surface area, sq. m. |
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outdoor |
internal |
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| 4 | 8200 | |||||||
| 8500 | ||||||||
Cylindrical vertical tanks are made of various steel grades depending on the purpose and the stored liquid. So for oil and oil products, vertical tanks are made of black steel grades ST3 and 09G2S. For drinking water, acids and alkalis, vertical tanks are made of stainless steel different varieties, including food grade stainless steel. The thickness of the metal walls for vertical tanks varies depending on their volume, the density of the stored product and the estimated service life, and ranges from 4mm. up to 12mm. For example settlement period services of the vertical tank RVS-400 for light oil products from black steel grade ST3 4 mm thick. is 12 years old. Each additional 2mm of metal thickness on the wall, bottom and roof of the tank adds 5 years to the estimated service life of the tanks. Although these figures are approximate and depend on the quality of maintenance of the vertical tank and its anti-corrosion coating.
To date, the Plant of Reservoir Structures StroyTechMash has successfully manufactured and installed VST steel structures in many cities of Russia. This list includes: Moscow, Tver, St. Petersburg, Ryazan, Tula, Kaluga, Smolensk, Voronezh, Lipetsk, Tambov, Belgorod, Saratov, Krasnodar, Rostov-on-Don, Kazan, Nizhny Novgorod, Yaroslavl, Ulyanovsk, and other cities and regions of Russia. Thanks to highly qualified specialists of our company, the quality of manufacturing and installation of vertical RVS tanks remains at a high level.
In the photo, the installation of a vertical tank RVS-1000 in Moscow
Tanks for oil and oil products are an indispensable and time-tested method of storing hydrocarbons in oil depots, refineries, chemical industry enterprises and as a reserve for diesel fuel in boiler houses and power plants.
For the central and southern regions of Russia, the tanks are made of steel of the St3ps5 grade, and for the northern regions, steel of the 09G2S grade is used.
The dimensions and weight of a vertical tank depend both on the volume and on the thickness of the sheet steel used in their manufacture.
After welding is completed, vertical tanks are primed and covered with anti-corrosion enamel to prevent rust both outside and inside.
As a rule, tanks intended for storing water and diesel fuel are insulated and heated. Insulation is made with thermal insulation made of mineral wool 50mm or 100mm thick. and sheathed on top of a galvanized sheet with a thickness of 0.5-1mm.
Heating of vertical tanks is carried out either by steam using a pipe coil device at the bottom of the tank, or by an electric heating cable mounted on the bottom of the tank. outside walls.
A special place in our production is occupied by RVS fire tanks designed for fire extinguishing systems of office, public and administrative buildings, shopping and industrial complexes.
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| installation of RVS-200 for diesel fuel | vertical tank RVS-200 installation | vertical tank installation work |
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| RVS-400 for Reutov heating system | RVS400 tanks with insulation |
RVS type tanks are manufactured by two methods:
1. Rolling or an industrial manufacturing method involves welding the entire wall and the entire bottom of a vertical tank in the form of a panel spread on a slipway and further winding this web on a coil.
2. The sheet-by-sheet assembly method implies the assembly of the bottom and wall of the RVS tank at the place of its installation by sequentially building up each sheet of metal gradually from the bottom up. This method is used if the thickness of the metal sheets from which the tank is made exceeds 10 mm, as well as during the construction of vertical tanks with a volume of more than 5000 m3
In rare cases, in the manufacture of RVS tanks custom design, in the manufacture a combination of the two methods listed above for the manufacture of vertical tanks is used.
It is worth noting that the rolled production of vertical tanks was developed and introduced from the mid-50s of the 20th century by the Institute of Electric Welding named after Paton E.O. Academy of Sciences of Ukraine. This method was mastered, implemented and put on stream production with subsequent installation in all areas Soviet Union. As a rule, the bottom panel is rolled up into rolls of the same diameter as the walls, and wrapped around the central post supporting the roof of the vertical tank. The manufacture and RVS in this order was called the industrial method.
The design and engineering bureau of the StroyTechMash Reservoir Design Plant carries out the design of vertical tanks with a volume of 10 to 5000 m3. Standard designs for vertical tanks of the RVS type have existed since the 1970s and were developed by various design institutes of the USSR. But in typical projects, such nuances as snow load, density of the stored product, seismic activity at the site of the future installation, service life and piping of the vertical tank are not taken into account. When designing tanks, the design bureau of the StroyTechMash Plant takes into account all of the above nuances, as well as the individual wishes of the Customer.
The Plant of Tank Structures StroyTechMash has its own field team for the installation of vertical tanks. Installation of RVS tanks is carried out in any month of the year, but at an ambient temperature higher than minus 15C Celsius. This is due to the quality of the superimposed weld, at an ambient temperature below -15 ° C, the weld hardens too quickly and voids remain in it (the so-called fistulas). Installation work, on unwinding the wall and bottom from the coil, is carried out using a crane and manual winches with a vertical tank volume of up to 2000 m3, and with a volume above, tractors are involved.
