A self bunded fuel tank is a tank within a tank. The inner steel wall stores the fuel; the outer wall acts as an integrated bund, providing at least 110% secondary containment. If the inner tank leaks, fuel is captured within the outer wall — preventing environmental contamination and site incidents.

This double-wall design eliminates the need for a separate civil bund, concrete pad or engineered bunding infrastructure, which simplifies EPA and council approvals and reduces site preparation costs significantly.

Diesel storage commonly references AS 1940 (storage and handling of flammable and combustible liquids) and AS 1692 (steel tanks for flammable and combustible liquids). These standards set requirements for tank construction, secondary containment, overfill protection and installation.

State EPA requirements and local council rules also apply and vary by location. A-FLO's team can guide you through the specific obligations for your site and state before you specify a tank.

For most Australian operations — farms, transport yards, construction sites and mine sites — a self bunded tank is the right choice. It provides 110% secondary containment without requiring a separate engineered bund, which streamlines approvals and reduces site preparation costs.

Single-skin tanks are suited to controlled areas where a compliant concrete or engineered bund is already in place and is sized correctly to capture 110% of the tank capacity. If that bunding infrastructure doesn't exist, a self bunded tank is simpler and more cost-effective overall.

Base your tank size on weekly fuel consumption and your supplier's delivery frequency. A-FLO's self-bunded range covers 1,000L to 110,000L. As a general guide: oversizing ties up capital; undersizing means frequent deliveries and potential operational downtime when deliveries are missed.

Our team can assist with a sizing consultation — contact your local A-FLO representative with your weekly consumption figures and we'll recommend the right configuration.

Diesel and AdBlue must never share the same tank or hardware. Cross-contamination causes serious damage to AdBlue injection systems and common-rail diesel engines — the repair cost far exceeds the cost of specifying correctly.

A-FLO's Combo Diesel/AdBlue Fueltainer systems provide segregated compartments with DEF-compatible components, storing both fluids safely in one unit without any risk of cross-contamination.

12V pumps suit mobile and remote sites without mains power access. 24V pumps suit larger mobile plant. 240V pumps deliver higher flow rates — typically 70–100LPM — for high-throughput fleet refuelling at depots with mains power available.

A-FLO can configure your tank with the right pump, filtration and metering package from a single supply — contact our team to discuss your site's throughput and power requirements.

Fuel management systems are available as an option on any A-FLO self bunded tank. A-FLO supplies FLUIDTRACK, FLUIDLINK, PIUSI Bsmart and Compac Comfill systems — ranging from basic digital metering to full user and vehicle tracking with cloud reporting.

For fleet operations, we strongly recommend specifying a FMS at installation rather than retrofitting later — the integration cost and disruption to operations makes upfront specification significantly more cost-effective.

Yes. A-FLO supplies and installs self bunded fuel tank systems nationally across VIC, NSW, QLD, WA, SA, TAS, NT and ACT — including remote mine sites, regional agricultural operations and metropolitan fleet depots.

A-FLO operates from Melbourne VIC and Perth WA with national sales representatives covering all states. Contact us to be connected with your local representative.