Rajan Wilcox
A bunded fuel tank is a tank within a tank. It has an extra outer protective layer, or 'bund layer', that offers one of the safest ways to store fuel. The inner tank holds the fuel, while the outer tank provides an additional protective layer. This design reduces the risk of spillages, making bunded tanks ideal for complying with regulations on fuel storage. Bunded tanks are also durable, secure, and can be customised to fit specific requirements.
| Characteristics | Values |
|---|---|
| Definition | A tank within a tank |
| Number of layers | Two |
| Function | Protects the inner tank that stores the fuel |
| Capacity | Up to 125,000 litres |
| Customisation | Shape, size, walkways, gantries, split compartments |
| Material | Steel or plastic |
| Safety | Protects against damage, spillage, contamination, theft, corrosion, and environmental damage |
| Durability | Up to 25 years with maintenance |
| Compliance | Meets ISO 9001 and DSEAR Regulation 6(4)(e) requirements |
| Warranty | 10 years |
| Cost | Higher upfront cost but long-term savings |
| Installation | Can be installed in hard-to-access areas |
| Maintenance | Requires regular maintenance to prevent corrosion and leaks |
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What You'll Learn
Environmental protection
Bunded fuel tanks are designed to offer environmental protection by reducing the likelihood of oil spillages. Oil spills can cause significant environmental damage, impacting surrounding land and waterways. The bunded design, also known as a “tank within a tank”, features an inner tank that holds the fuel and an outer protective layer or "bund layer" that prevents spillages. This outer layer can contain 110% of the inner tank's capacity, ensuring that any leaks are contained within the bunded tank.
In some cases, bunded tanks are a legal requirement to enhance safety and comply with environmental standards. For example, in the UK, bunded tanks are mandatory for storing over 200 litres of fuel on commercial properties. Additionally, specific locations, such as proximity to water sources or environmentally sensitive areas, may require the use of bunded tanks to mitigate pollution risks.
The use of bunded tanks can also provide financial benefits by reducing the risk of fuel loss due to spillages or theft. The robust design of bunded tanks makes them durable and secure, offering long-term cost savings and peace of mind. Furthermore, bunded tanks can be customised to meet specific requirements, such as capacity, shape, size, and additional features.
While the initial cost of bunded tanks may be higher, their extended warranties and enhanced safety features make them a worthwhile investment for environmental protection and fuel security. By preventing fuel spillages and complying with regulations, bunded tanks play a crucial role in safeguarding the environment and minimising the harmful effects of fuel storage on the surrounding ecosystem.
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Safety and security
Bunded fuel tanks are designed with safety and security in mind. The unique “tank within a tank” design provides an extra protective outer layer, enhancing the security of the fuel stored in the inner tank. This secondary containment system offers several benefits to prevent fuel spillage and protect the surrounding environment.
Firstly, bunded tanks significantly reduce the risk of fuel spillages compared to single-skin tanks. The outer layer can contain 110% of the inner tank's capacity, including 10% extra volume. This design ensures that in the event of a leak or damage to the inner tank, the outer layer will catch and contain the fuel, preventing it from escaping into the environment. This feature not only complies with pollution regulations but also minimises the potential environmental impact of fuel spills, which can cause harm to both the ecosystem and human health.
Secondly, bunded tanks offer protection against fuel theft, a costly issue in the industry. The lockable fill point and anti-vandal cabinets provide additional security measures to safeguard your fuel. The tank gauge also helps you monitor fuel levels, allowing you to quickly identify any unauthorised fuel removal.
Moreover, bunded tanks can be customised to meet specific requirements, such as tank capacity and design. This flexibility ensures that the tank can adapt to your future needs and fit seamlessly into your site. Additionally, bunded tanks are durable and robust, capable of withstanding the elements and providing long-term fuel security.
In terms of regulations, it is important to note that bunded tanks are legally required in certain scenarios, particularly when storing large volumes of fuel. For example, in England, a bunded tank is mandatory for storing over 3,500 litres of oil, while the threshold is 2,500 litres in Scotland and 200 litres in Wales. These regulations may vary depending on the location and environmental considerations, so consulting local authorities is essential to ensure compliance.
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Regulations and compliance
In the United Kingdom, strict safety regulations govern the storage of fuel to ensure its proper handling and storage. These regulations include the Control of Pollution (Oil Storage) Regulations for England, Wales, and Northern Ireland, as well as the Water Environment (Oil Storage) Regulations for Scotland.
The regulations require businesses to store fuel in bunded tanks to prevent accidental releases and protect against ground and water contamination. The outer bund acts as a secondary containment system, capturing any fuel leaks or spills from the inner tank. This prevents fuel from seeping into the ground or water sources, preserving the ecosystem and avoiding costly environmental damage and clean-up charges.
To comply with these regulations, businesses must ensure that their fuel storage tanks meet certain requirements. In domestic settings, any oil tank with a capacity of more than 2,500 litres must be bunded, regardless of location. Additionally, if the delivery person cannot see the vent pipe from the fill point during filling ("blind fill"), a bunded tank is required to ensure safe fuel delivery.
Furthermore, if a tank is within 50 metres of a well, borehole, or spring, or less than 10 metres from "controlled water" sources such as ditches, soakaways, streams, or rivers, a bunded tank is necessary. This is to prevent fuel from accidentally entering watercourses and causing contamination.
To ensure compliance, it is recommended to collaborate with specialised companies that provide custom bunded fuel tanks, such as FSUK Tanks Ltd and Western Global. These companies offer solutions that meet and exceed safety requirements, providing efficient and cost-effective fuel storage while protecting the environment and ensuring workplace safety.
It is also important to engage certified engineers, such as OFTEC-accredited engineers, for the installation and maintenance of fuel storage tanks. The building requirements around fuel storage tank installation are complex and constantly evolving, and non-compliance can lead to large fines. Regular inspections and maintenance by certified professionals help ensure that the tanks remain in sound condition and comply with relevant regulations, including Oil Storage Regulations and OFTEC standards.
Additionally, businesses can consider implementing a Fuel Management System in conjunction with their bunded tanks to improve security and eliminate the risk of fuel fraud. This system allows for the tracking of fills and mileage, making the unauthorised removal of fuel difficult. By investing in compliant bunded fuel tanks and associated security measures, businesses can maintain a safe and efficient fuel storage system while demonstrating their commitment to environmental responsibility and regulatory compliance.
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Installation and maintenance
Bunded fuel tanks are designed to be robust and durable, offering one of the safest ways to store fuel. They are typically made from steel or plastic and can be customised to fit specific requirements, such as shape, size, and additional features. When installing a bunded fuel tank, it is important to engage certified engineers to ensure compliance with the latest regulations. OFTEC-accredited engineers, for instance, can help guarantee that your tank meets the necessary standards.
To maintain your bunded fuel tank, regular inspections and maintenance checks are crucial. While annual inspections are not mandated by legislation, they are highly recommended to prolong the life of your tank. These inspections can identify early signs of corrosion, structural weakening, or potential leak risks. Regular checks of the locks, hatch, and test systems should also be conducted to address any minor issues before they become hazards. It is also essential to inspect the tank base and the bund layer for any cracks, leaks, or litter. Weekly inspections can help ensure that any potential issues are promptly addressed.
Proper drainage, elevation, and protection from physical impacts are vital to maintaining the integrity of your bunded fuel tank. Additionally, the pipework and fittings should be regularly checked as they can become loose over time. Cleaning your tank is also critical to prevent trapped water, which can lead to corrosion and leaks. After heavy rainfall or cold weather, pay close attention to the tank, checking for any signs of cracks, leaking, or water ingress.
To enhance security, bunded fuel tanks can be equipped with features such as lockable fill points, tank gauges, fuel inspection hatches, and overfill protection devices. Anti-vandal cabinets can also be fitted to increase security and provide peace of mind.
Bunded fuel tanks offer a cost-effective and secure solution for storing fuel onsite. With proper installation and regular maintenance, these tanks can have a long shelf life, providing safety and security for your fuel.
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Cost and savings
Bunded fuel tanks are generally more expensive upfront than single-skin tanks. However, they offer cost savings in the long term through enhanced protection against leaks and spills, improved security, and reduced maintenance.
Cost of Bunded Fuel Tanks
Bunded fuel tanks are more expensive than single-skin tanks due to their additional outer layer, which provides extra protection and containment. The cost of a bunded fuel tank can vary depending on factors such as size, material, and customisation options. Steel bunded tanks, for example, are more expensive than plastic tanks but offer greater durability and security.
Savings on Fuel Security and Spill Prevention
Bunded fuel tanks offer significant savings by reducing the risk of fuel theft and spills. Fuel theft is a common issue, with over 25,000 fuel thefts reported in the UK in 2018. Bunded tanks are equipped with security features such as lockable fill points and fuel inspection hatches, deterring thieves and reducing the risk of fuel loss. Additionally, the double-wall construction of bunded tanks provides an extra layer of protection against leaks and spills. In the event of a puncture or failure of the inner tank, the outer bund layer contains the fuel, preventing costly clean-up operations and environmental fines.
Savings on Maintenance and Compliance
Bunded fuel tanks also offer cost savings by reducing the need for secondary containment systems, such as containment pans or trays. The built-in secondary containment of bunded tanks eliminates the expense of purchasing, maintaining, and periodically cleaning separate containment equipment. This integrated design not only saves money but also enhances convenience and efficiency, as there is no need to manage additional spill containment infrastructure. Additionally, bunded tanks typically offer longer warranties than single-skin tanks, reducing maintenance and replacement costs over the long term.
Savings on Refuelling Operations
The large capacities of bunded fuel tanks, ranging from 500 litres to over 100,000 litres, enable on-site refuelling for vehicles and machinery. This eliminates the need for staff to leave the premises for refuelling, saving time, resources, and refuelling-related costs. On-site refuelling improves operational efficiency, allowing businesses to take advantage of bulk fuel purchase prices and consistent machinery operation.
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Frequently asked questions
A bunded fuel tank is a tank with an extra outer protective layer, also known as a 'bund layer'. This design functions as a 'tank within a tank', with the smaller tank held inside the larger container. The inner tank holds the fuel, while the outer tank provides an additional protective layer.
Bunded fuel tanks offer a range of benefits. They are one of the safest ways to store fuel, providing added protection against contamination and leaks. This reduces the risk of environmental damage and health and safety risks to people. They also offer longer warranties and additional security features to prevent fuel theft.
Bunded fuel tanks are required by law in certain scenarios, depending on the volume of fuel stored and the location of the tank. In England, a bunded tank is mandatory if storing over 3,500 litres of oil, while in Scotland and Wales, the minimum volume is 2,500 litres and 200 litres, respectively. Additionally, a bunded tank may be required if the tank is located near water sources or areas where an oil spill could occur.
