Floating roof for liquid storage tanks

摘要

A floating roof for a liquid storage tank has a lid structure comprising a plurality of fluid tight interconnected plates of fluid tight material and a plurality of buoys for imparting buoyancy to the lid structure arranged on the surface of the lid which is opposite the surface of the lid which faces the liquid body upon which the lid floats. Each buoy of at least a majority of the buoys has a base formed of one of said plates, and further includes structure attached to the base and having at least two sides inclined relative to a perpendicular plane through the lid structure and relative to each other.