A Chemical Bund Lining is a secondary containment vessel that prevents harmful chemicals and liquids from spreading in the event of a primary tank failure. They are commonly used in refuelling areas, tank farms, lube storage facilities and more. Bunded tanks are also required in many industrial and processing plants for the same reason – to prevent environmental contamination or groundwater pollution.
When it comes to lining bunds, there are several factors to consider – the type of chemicals stored, how they’ll be handled and the surrounding environment – and each has a different effect on the best chemical resistant coating for bund lining. In general, it’s a good idea to stick with a GRP or epoxy coating to avoid the risk of cracking, leakage and other problems associated with concrete or steel structures.
Chemical Bund Lining: Safeguarding Environments and Ensuring Containment
The two most common types of chemical bund liners are GRP (glass-reinforced plastic) and 2-part epoxy. These are durable and offer excellent resistance against chemical attack, punctures, abrasions and UV exposure, whilst being able to stand up to the harshest of environments.
Other lining options include polyurethane and polyurea lining systems, which offer an even higher level of chemical resistance than fibreglass bund linings. They also have a degree of flexibility, which makes them better suited to bunds that could suffer from structural movement stress cracking. In this instance, the bund was lined with Remmers Epoxy WM100. This damp tolerant product can be used for bund lining repairs or new construction, and was a perfect choice because it will allow the bund to move without affecting the integrity of the epoxy coating.