Construction of A 60.000 m~3 steel storage tank for gasoline

摘要

The paper deals with the use of the new micro-alloyed steel niomol 490 K for the construction of above-ground tank for the storing of gasoline. The volume of the storage tank is 60.000 m~3, its inner diameter is 60, 1 m, and the height of its curved surface 22 m. Fine grained micro-alloyed steel niomol 490 K has a ferrite-bainit microstructure and exhibits the following mechanical properties : tensile strength 560-700 MPa, impact toughness more than 200 J and brittle transition temperature at -133 deg C. The storage tank has a fixed domed roof, floating dock and double bottom. The elements of the storage tank are made of niomol 490 K, whereas the domed roof and the floating dock are made of aluminium. The storage tank has double curved surface. In case of damage of the tank this prevents the spilling of the fluids and their trickling into the earth. The reservoir is the largest steel structure of this kind in Slovenia, and the same time also the most modern one.