December 2017

Special Focus: Plant Design, Engineering and Construction

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

As crude oil prices decline, consumption of petroleum fuels is increasing.

Reddy, K. V., Sajeev, V. N., FACT Engineering and Design Organization

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. Type of tank Generally, the crude oil vapor pressure in the tank is approximately 14.6 psi. To reduce vapor e

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