Technological process of assembly and welding of ring and butt seams of the body of a tank for a foaming agent V=10m3.

The operating conditions of the tanks and their design features must be specified by the customer. In the absence of a complete specification from the customer, the operating conditions and other requirements are determined by the designer, taking into account the provisions of building codes and regulations, and agreed upon with the customer in the design specifications. In my case, I'm using a horizontal foam concentrate tank, all components made of grade 09G2S-8 steel. The product is used in a moderate climate.

The foam concentrate tank is designed to generate air-mechanical foam or wetting solutions, using specialized equipment, used to extinguish fires involving flammable liquids, solids, and materials.

The wall of the horizontal tank is made of several sheet shells. Each shell is made of sheet or coil steel. The sheet width is 1500 mm. The sheets and shells are joined together with butt welds, with the exception of field joints, which may be overlap welds. To increase rigidity, the walls of horizontal tanks are reinforced with support and intermediate stiffening rings. The support stiffening rings have an additional, most often triangular, diaphragm. To ensure rigidity during transportation and installation, and to withstand vacuum and wind loads, the walls of horizontal tanks are reinforced with stiffening rings made of rolled angles, rolled onto a flat end and welded to the wall. The bottom of a horizontal tank can be flat for excess pressures of up to 40 kPa and conical for up to 70 kPa. A flat bottom is most often reinforced with stiffening ribs. The recommended wall thickness for horizontal high-pressure tanks is 4 or 5 mm, depending on the volume and excess pressure in the horizontal tank. Above-ground horizontal tanks are supported by two saddle-shaped supports or two post-type supports. The wrap angle of the saddle support varies from 60 to 120°. Underground tanks are equipped with service wells providing access to the neck and service pipelines.

Manufacture, testing, and acceptance of the storage apparatus must be carried out in accordance with the requirements of the rules for the design, manufacture, and acceptance of welded steel vessels and apparatus PB 03-584-03, TU 3615-002-25435667-2011.