1. Atmospheric tanks

1.1 General

These are vertical cylindrical tanks with flat bottoms, differentiated by the type of cover.

Open tanks (figure 1 a ) have no roof, and their use is limited to the few liquids that can be exposed to the open air without risk to their quality or to the environment.

Fixed-roof tanks (figure 1 b ) are fitted with a roof, so that volatile, hazardous or polluting liquids are better preserved.

Floating roof tanks (figure 1 c ) comprise...