Description
900 Litre Steel Bunded Waste Oil Tank made with Imperium® Technology – TAN.WOI-945
Robust, compliant, and designed for clean and safe waste oil collection.
This 900 litre steel bunded waste oil tank brings Imperium® engineering to the challenge of waste oil storage. Built in high-grade mild steel, this brand new design (2025) combines durability with safety.
Who Would Find This Tank Useful?
This 900 litre waste oil tank is ideal for:
- Garages, vehicle service centres, workshops and fleet operators that collect and store waste oil and waste lubricants.
- Fleet depots and workshops requiring reliable waste oil containment.
- Commercial premises seeking cost-effective, long-life bunded waste oil storage.
Key Features Summary
- 900 litres capacity – practical size for small to medium-scale waste oil collection.
- Integral opening with strainer & lockable lid for safe waste oil disposal – pour in your waste oil here and keep your pliers and sump plugs from falling into the tank.
- Imperium® Technology – stronger welds, smarter design, faster installation.
- Fully bunded steel construction – integral secondary containment reduces risk of spills and ensures environmental compliance.
- Interchangeable fittings plate – flexibility to switch between waste oil, lube oil and other liquid storage uses.
- 2” BSP tank socket and 2” internal suction tube – from which waste oil can be extracted without drama or drips
- Durable external finish – coated in premium, black protective paint for long service life.
Imperium® Technology | Smarter, Stronger, Faster
Imperium® Technology represents more than 18 months of research and development. It’s a complete rethink as to how our steel oil tanks, including those for waste oil, are designed and built. Imperium®’s unique and original approach couples precision design with a new modular construction method. This is where each tank is made to tighter tolerances, needs fewer welds, has improved corrosion resistance, standardised fittings and close adherence to British standards.
Unique Imperium® Features
Smarter (design)
– Unique modular design & lean production approach (Imperium® Technology)
– Unique removable and interchangeable top fittings plate – see our ‘One Tank, Many Lives‘ blog post for more details.
– Easier to inspect and maintain when fittings plate removed
– Transform your tank into another type with replacement fittings plate
– Designed with the automotive and transport sectors in mind
– Patent Pending
Stronger (construction)
– More durable design to finer tolerances
– Longer-lasting tank from easier inspection and maintenance
– 10 year warranty for long-term reassurance
Faster (delivery)
– Leaner, faster, more efficient production
– Quicker overall lead times from streamlined production
– Direct-to-site delivery
Technical Highlights | 900 Litre Steel Bunded Waste Oil Tank
Specification |
Metric |
| Outer tank dimensions | (L) 1525mm × (W) 610mm × (H) 1250mm |
| Inner tank dimensions | (L) 1395mm × (W) 550mm × (H) 1248mm |
| Brimful capacity | 945 litres |
| Nominal capacity | 898 litres |
| Usable capacity | 898 litres |
| Dry weight | 222 kg |
| Wet weight (full) | 996 kg |
| Mounting | 2 full-length base bearers |
Protective Finish
Double coating of Zinfos: Your 900 litre steel bunded oil tank is painted with 2 coats of our specially formulated anti-rust coating system designed to give maximum protection – Zinfos 340 WS (150μm WFT / 75μm DFT). If you would like to purchase this paint separately, please click here. We recommend painting your steel tank once a year to achieve the maximum lifespan.
Whilst our Zinfos paint is extremely robust, it is recommended that an alternative paint is used if the tank is to be located in a marine environment, please speak to our sales team for more info.
Tank Colour: Our standard paint colour finish is Black. A small tin of “touch-up” paint is included with your new tank for applying when scratches might occur during the installation process.
The black colour is an industry convention for waste oil tanks. However, other finishes are available upon request and are not currently forbidden by law. If you want a different colour, choose one by referring to the RAL colour chart (this could add the lead time of up to 1 week).
Supplied as Standard | Fittings & Connections
Removable Top Fittings Plate with:
- Integral opening with strainer & lockable lid for safe waste oil disposal
- 2″ top suction drain port with internal suction pipe
- 2 × 1.5″ tank sockets
- 1 × 2″ tank socket
Tank Top (Middle to Rear):
- Pitched roof design for rainwater run-off
- Lifting eyes for safe manoeuvring
- 1.5″ bund socket for optional bund alarm probe
- 2″ tank-to-bund vent
- 2″ bund-to-atmosphere vent with aluminium vent cap
Front Side of Tank:
- Alarm mounting plate
Why Choose Imperium® Waste Oil Tanks?
- Peace of mind – robust build, bunding, suction tube and waste oil inlet with strainer reduce spill and contamination risk.
- Service friendly – easy access via the unique removable fittings plate innovation.
- ‘Transformer Tank’ – interchangeable fittings allow future repurposing for lube oil and other uses in the future.
- Built to last – steel construction, premium coating, and a market-leading warranty.
Optional Extras
- Clock Face Tanks Contents Gauge 4ft
- Apollo Ultrasonic Tank Contents Gauge
- Spiral Float Tank Contents Gauge 4ft
- Battery-powered High Level Alarm
- Imperium® Tank Stand for a 945 Vessel
- Steel Tank Maintenance Pack (paint, sponge, gloves, wipes)
- Extra top coat of paint (black)
- Black Metal Tank Paint – 1 litre
Warranty
Our 1050 litre waste oil tank is backed by a market-leading 10 year warranty. Register your tank after installation to activate cover.
Technical Downloads | 900 Litre Steel Bunded Waste Oil Tank
Find drawings, diagrams and guides under the ‘Technical Documents’ tab on this page. Specifically:
- Downloadable Datasheet for this 900 litre steel bunded waste oil tank
- Customer Technical Drawing with numbered fittings
- Product Manual – Installation, Maintenance & Warranty
- Imperium® Declaration of Conformity and Compliance
Compliance & Materials
This bunded steel waste oil tank is designed and manufactured in the UK to meet the latest regulations governing waste oil storage:
- BS 799 pt.5 standards – ensures steel oil storage tanks are built to consistent, recognised quality.
- Control of Pollution (Oil Storage) (England) Regulations 2001 and equivalent devolved regimes – secondary containment and robust bunding for spill prevention.
- Hazardous Waste (England & Wales) Regulations 2005 – compliant for safe collection and storage of waste oils.
- Environmental Protection Act 1990 (Duty of Care) – secure bunding, leak-proof steel construction and clear labelling reduce the risk of environmental harm.
- Manufactured from S275 JR structural steel (BS EN 10025-2:2004) – guaranteeing strength and long service life.
This compliance framework ensures our 900 litre waste oil tank offers a sound, environmentally responsible solution for collecting and storing waste oils in commercial and industrial settings.
Frequently Asked Questions | 900 Litre Steel Bunded Waste Oil Tank
Why doesn’t this waste oil tank have an overfill prevention valve (OPV)?
Overfill prevention valves are used on heating oil tanks that are filled under pressure from a delivery hose. A waste oil tank is filled manually via the integral waste oil inlet and strainer, using trays or drainers of collected oil. Because there is no sealed hose connection, an OPV cannot function in this application. The waste oil inlet design provides safe, open filling for waste oil without the risk of back pressure.
Do I need a bunded tank for waste oil?
Yes. UK regulations require bunding for all commercial waste oil storage to prevent leaks or spills from contaminating the environment. The TAN.WOI-945 features an integral steel bund that provides compliant secondary containment, meeting the Control of Pollution (Oil Storage) (England) Regulations 2001 and devolved equivalents.
What liquids can I store in a waste oil tank?
The TAN.WOI-945 is designed for used engine oils, lubricants, transmission fluids and similar waste oils. It can also hold diesel, heating oil, HVO and other compatible fuels (always check with us first). Some sites also use waste oil tanks for the safe collection of used cooking oil before recycling. Whatever the liquid, it is essential to clearly label the tank and keep different waste streams separated.
What colour should a waste oil tank be?
There is no legal requirement for waste oil tanks to be a specific colour. However, black is the industry convention for steel waste oil tanks, as it helps distinguish them from heating oil (often green) or lube oil (often grey) tanks. The TAN.WOI-945 is supplied in black as standard, but alternative finishes are available on request.
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