Many on-site fuel / chemical storage tanks and silos are protected by concrete or brick bunds to minimize spillage and environmental damage. However, these structures can be damaged, corrode, and prone to cracking if not lined correctly. Bunds that are leaking or contaminated risk breaching Environment Agency pollution guidelines potentially leading to costly site repair works and hefty fines for the operator. Adding a protective lining to your bund can ensure it remains fluid-tight for the lifetime of the tank, and offers additional protection if a leak occurs.
The type of Bund Lining Systems required will depend on the chemicals stored within the bund and the liquid handling / storage environment. Different linings have different chemical-resistant properties so it is important to get this right for legal adherence and to avoid potential contamination and spillage.
Guardians of Containment: Understanding the Essentials of Bund Lining Systems
Typically the best option is a GRP or Polyurea material lining. These offer a combination of strength, chemical resistance and elasticity that is ideal for a concrete/brick structure. They are generally hot spray applied and cured in seconds so that the structure is quickly back to service / operation.
Other lining options include epoxy resins. These tend to be hard and rigid but are good for a wide range of “normal” chemicals and do deal with corrosion well. However, they are not suited to areas where movement stress cracking is likely to occur. Polyurethane and polyurea are much more flexible, so work well as a bund liner for oil or other non-aggressive chemical environments.