The design and construction of large crude oil storage tanks with double-deck floating roofs

摘要

As crude oil prices decline, consumption of petroleum fuels is increasing. To supply refined products, refineries across the world are importing crude oil through very large crude carriers (VLCCs) and extra-large crude carriers (ELCCs) using single point mooring (SPM) systems, and storing crude oil in onshore tank farms before pumping it to refinery crude oil tanks. This work discusses the major design aspects and construction of large crude oil tanks, with an illustration of a typical external double-deck floating roof tank with an inside diameter of 79 m and a height of 18 m.