The API 653 inspection is contained in the API-653 article, which is maintained by the American Petroleum Institute (API). It covers the alterations, reconstructions, and inspections of above-ground storage tanks. API 653 checks apply to field-erected tanks constructed according to API 12C or 650 standards and measuring at least 50 feet tall or 30 feet wide.
One of the areas covered in an API 653 inspection service is a tank’s corrosion. This is because the materials used for the fabrication of storage tanks are susceptible to material degradation from the caustic and highly corrosive materials they contain. Here are some lining rubber materials that will help minimize your tank’s corrosion.
Soft Natural Rubber
This is a good option if your tanks hold inorganic chemicals since soft rubber withstands a range of abrasive materials. It is usually used for tanks that store hydrochloric acid. Soft natural rubber will, however, be corroded by strong oxidizing agents.
This synthetic rubber variant is renowned for its capability to contain moisture, gas, and air. It is resistant to caustic and abrasive chemicals, including a broad range of acids. Bromobutyl also has exceptional age and ozone resistance and can contain liquids with temperatures above 260 degrees Fahrenheit. Chlorobutyl is a variant of bromobutyl, which is typically blended with natural rubber to improve its adhesion.
This synthetic rubber can tolerate higher temperatures and lasts longer than natural rubber. It’s resistant to petroleum-based mixtures, including grease, oils, and solvents. Neoprene can also withstand mineral acids, ethyl and methyl alcohols, and a few salt solutions.
Bulk storage tank owners should conduct monthly API 653 inspections to preserve their assets. An external inspector will also inspect the tanks after every five and ten years to ensure that they are in good condition. The above rubber lining options will protect your tank from corrosion and help you avoid hefty penalties.