Chemical plant storage tanks. The industrial-scale manufacture of chemicals requires specialised engineering to meet a wide range of storage requirements. Products and reactants, ranging from liquids to gases and solids, have to be kept at the correct temperature and pressure. They then need to be piped or transported around the site to and from these storage facilities. These tanks are part of a larger oil refinery and chemical manufacturing site. Oil refining and chemical manufacturing are closely related industries, as oil products are used in a wide range of chemical industry manufacturing processes. Photographed at ExxonMobil's Fawley Oil Refinery and Chemical Plant, Hampshire, UK, which is one of the largest petrochemical plants in Europe.