DETERMINATION OF THE THICKNESS OF THE COVER STRUCTURE OF OIL TANKS
Oil tanks must meet the requirements of low evaporation losses, as well as durability and longevity. Oil tanks are made of steel and non-metal structures of different materials. Steel oil tanks are small (up to 2000 Pa), high (up to 70,000 Pa) and atmospheric pressure due to the additional pressure in the gas phases. Due to their design, steel oil tanks are vertical cylindrical, horizontal cylindrical, drip-shaped and trench-type. Vertical cylindrical oil tanks are the most common and are mainly conical, spherical, pantone, floating lid. Pantone and floating oil tanks - used to reduce evaporation losses during oil storage. The pantone installed in the oil tank with a capacity of 20,000 m3 consists of a steel floor made of a 4 mm thick layer of steel and a ring with two lids welded along its perimeter at a distance of 2.8 m from each other. These ribs provide rigidity to the pontoon during movement, as well as a reserve swimming position when the middle part of the panto sinks. The annular ribs are connected at a certain distance from each other (up to 1/48 of the circumference) by radial ribs. The annular and radial ribs are welded to the floor of the pantone with a complete seam. Keywords: cover construction, oil storage terminal, oil tanks volume, determination of the coating structure.