What is a bund?

Wherever chemicals are stored, bunds are required. If the housing (ie. a tank) containing a corrosive chemical fails, as can happen from environmental factors such as general deterioration, seismic events or accidents; then a bund is there to barrier the spilt chemical from people and the environment. Bunds can come in the form of a sealed concrete wall and floor around the entire housing or a container, similar in design to an above ground pool, made from a material resilient to the corrosive chemical and built to a specific size outlined in the aforementioned standards.

Standards

Australian standards require specific dimensions for bunds to minimise spillage and ensure correct load tolerances. Basic specifications require a minimum 1m distance between the tank and the bund walls, ensuring drainage is possible via a graded floor and a collection sump. Furthermore, containing pipes and pumps must be within the bund area and must still operate if the bund were full.

Plastics

When it comes to materials impervious to corrosive chemicals, plastics are often a perfect option and can be used for both the floor and walls of a bund. Plastics such as HDPE (High Density Polyethylene) provide ultraviolet and strong chemical resistance qualities, while also being lightweight and a relatively inexpensive material for bund construction. Compared to concrete bunds, they’re much easier to install, maintain and replace.

Fusion rTank Bunds

Fusion rBunds are a pre-designed range of round chemical storage bunds specifically designed to suit Fusion rTanks prefabricated chemical storage range. They’re available in sizes ranging from 550L to 6050L, which suit rTank sizes from 500 to 5500L. Since rBunds and rTanks are are pre-designed and pre-fabricated, they’re a fast and cost-effective solution to long term, safe industrial chemical storage.