Storage Tanks are containers that hold liquids, compressed gases in tank; "pressure vessel", which is not typically labelled or regulated as a storage tank, or mediums used for the short- or long-term storage of heat or cold.

An Atmospheric Tank is a container for holding a Liquid, or Gas at atmospheric pressure. The major design code for welded atmospheric Tanks are API 650 and API 620. API 653 is used for analysis of in-service storage tanks.

Fixed Roof Tank
A fixed roof tank is a type of storage tank, used to store liquids, consisting of a cone- or dome-shaped roof that is permanently affixed to a cylindrical shell. Newer storage tanks are typically fully welded and designed to be both liquid- and vapor-tight.

Floating Roof Tank
An external floating roof tank is a storage tank commonly used to store large quantities of petroleum products such as crude oil or condensate. It comprises an open- topped cylindrical steel shell equipped with a roof that floats on the surface of the stored liquid

Spherical Tank
An advantage of spherical storage vessels is, that they have a smaller surface area per unit volume than any other shape of vessel. This means, that the quantity of heat transferred from warmer surroundings to the liquid in the sphere, will be less than that for cylindrical or rectangular storage vessels


Above Ground Storage Tank
Aboveground storage tanks (ASTs) used for the store of petroleum products is regulated primarily under 40 CFR 112. The regulation does not actually use the terms "aboveground storage tank." Instead the term "bulk storage container" is used and is defined as "any container used to store oil, or gas. For Gas usage, the tank design shall be according to Code and standards.


Underground Storage Tank
An underground storage tank system (UST) is a tank and any underground piping connected to the tank that has at least 10% of its combined volume underground. The federal UST regulations apply only to UST systems storing either petroleum or certain hazardous substances. These underground facilities are depleted reservoirs in oil and/or natural gas fields, aquifers, and salt cavern formations. Natural gas is also stored in liquid or gaseous form in above–ground tanks

Container Tanks Types
Both hazardous and non-hazardous products can be transported in tank containers. A tank container is a vessel of stainless steel surrounded by an insulation and protective layer of usually polyurethane and aluminum. The vessel is in the middle of a steel frame


API 650 Tank
API 650 is the standard governing welded tanks for oil storage. It dictates tank design, fabrication, welding, inspection, and erection requirements. API 650 is widely used for tanks that are designed to internal pressures of 2.5 PSI or less and store products such as crude oil, gasoline, chemicals and produced water

API 653 Tank
API 653 is the standard for tanks over 50 feet tall or having diameter greater than 30 feet. Covers the maintenance, inspection, alteration and repair of steel, field-erected aboveground storage tanks (ASTs) built to API 650 or API 12C standards.