Regan Brown
Above-ground fuel tanks are large containers designed to store various liquids, including gasoline, diesel, and other petroleum products. They are typically placed outdoors or within dedicated containment areas and can be constructed from steel, fiberglass, or reinforced concrete. These tanks offer several advantages over underground tanks, such as ease of access for maintenance and quicker installation. However, they are susceptible to damage from weather events and environmental factors, which can lead to leaks and spills. To mitigate these risks, it is recommended to fill the tank up to 95% of its capacity and conduct regular inspections for structural integrity. Proper safety measures and compliance with regulatory laws are crucial to ensure the safe operation of above-ground fuel tanks.
| Characteristics | Values |
|---|---|
| Installation | Above-ground fuel tanks can be installed quickly and easily, without the need for extensive ground preparation. |
| Placement | These tanks are typically placed outdoors or within dedicated containment areas, on a concrete pad or other stable surface. |
| Construction Materials | Steel, fiberglass, polyethylene, or reinforced concrete, depending on intended use, environmental conditions, and regulatory requirements. |
| Configurations | Cylindrical, rectangular, or spherical shapes, with single-walled or double-walled construction options. |
| Safety | Above-ground tanks are more susceptible to damage from weather events and environmental factors, and pose a risk of spills, leaks, and fires. |
| Maintenance | Easier to access for maintenance and inspection compared to underground tanks. |
| Cost | Lower initial costs and reduced upfront investment costs due to simpler monitoring and leak detection systems. |
| Filling | It is recommended to fill up to 95% of the tank's capacity and to do so once a month to lower the frequency of associated risks. |
| Spill Containment | A designated containment area, such as a dike or catchment basin, should be large enough to hold 125% of the tank's fluid capacity in case of leaks or spills. |
| Testing and Inspection | The EPA requires regular testing of above-ground tanks for structural integrity, using visual inspection and other techniques like hydrostatic or ultrasonic testing. |
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What You'll Learn
Above-ground fuel tanks are easy to fill and maintain
Above-ground fuel tanks are a convenient solution for storing fuel at a facility or job site. They are large containers that can hold various liquids, including gasoline, diesel, oil, chemicals, water, and other substances. These tanks are usually made from steel, fiberglass, or reinforced concrete and can be cylindrical, rectangular, or spherical. They can be installed quickly and easily, placed on a concrete pad or stable surface, and they provide easy access for maintenance and inspections.
One of the key advantages of above-ground fuel tanks is their ease of maintenance. They are designed with features to prevent leaks and spills, such as double-walled construction, which provides extra protection. They also have overfill prevention mechanisms and can be painted to prevent corrosion. The accessibility of these tanks allows for prompt identification and resolution of potential issues. For example, visual inspections can be conducted to check for leaks, and water separators and fuel filters can be installed to ensure that equipment remains water-free.
To maintain above-ground fuel tanks, it is important to regularly inspect them for any damage or leaks. This includes checking the external coating for depreciation, the roof for standing water, dents, or cracks, and the fuel hose for any signs of wear or cracking. It is also crucial to ensure that the control boxes, grounding lines, and fuel gauge are in good condition. Additionally, it is recommended to treat fuel regularly with additives to prevent water and algae buildup and to ensure that the fuel supply is clean and water-free.
Above-ground fuel tanks are generally easy to fill, with a recommended fill level of up to 95% of the tank's capacity, and refilling should ideally occur once a month. It is important to have a designated containment area that can hold 125% of the tank's fluid capacity in case of leaks or spills. Regular testing of the tank's structural integrity is also required, with the frequency and type of testing depending on the tank's size and design. Overall, above-ground fuel tanks offer a convenient and accessible option for fuel storage and maintenance, with features designed to prevent leaks and spills.
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They are less expensive than underground tanks
Above-ground fuel tanks are less expensive than underground tanks for several reasons. Firstly, they are generally more cost-effective to install. Unlike underground tanks, above-ground tanks do not require excavation or specialised equipment for installation, making the setup process faster and less expensive.
Another factor contributing to the lower cost of above-ground tanks is their ease of maintenance and repair. Being easily accessible, above-ground tanks can be inspected, maintained, and repaired more quickly and at a lower cost. This accessibility also enables early detection of potential issues such as leaks, reducing cleanup costs significantly.
Above-ground tanks also tend to have lower upfront investment costs due to less complex monitoring and leak detection systems. While both types of tanks are susceptible to leaks, the leaks in underground tanks may go unnoticed for extended periods, leading to costly environmental contamination. Above-ground tanks, on the other hand, can be visually inspected for signs of corrosion or damage, allowing for prompt action and less expensive cleanup.
Additionally, above-ground tanks often have a longer lifespan than underground tanks. Underground tanks are more susceptible to corrosion due to moisture in the soil and factors such as soil acidity. The resulting corrosion can accelerate the depreciation and replacement needs of underground tanks, adding to their overall expense.
It is worth noting that the choice between above-ground and underground fuel tanks involves balancing risks and costs. While above-ground tanks are generally less expensive, they may require additional security measures and are more vulnerable to external factors such as weather events and vandalism. Therefore, a comprehensive consideration of factors like location, local ordinances, environmental impact, and safety regulations is necessary before making a decision.
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They are susceptible to damage from weather events
Above-ground fuel tanks are convenient for businesses that require frequent fuelling of vehicles and equipment. They can be installed quickly and easily, placed on a concrete pad or other stable surface, and offer easy accessibility for inspection, maintenance, and repairs.
However, they are exposed to various environmental factors and are susceptible to damage from weather events. For example, extreme temperatures can affect above-ground tanks, causing corrosion, rust, and deterioration of tank materials over time, which can compromise the structural integrity of the tank. Tanks exposed to the weather are likely to wear down sooner than enclosed or underground tanks. Weather conditions can also increase the need for repairs. Underground tanks are sheltered and have a higher level of protection from the elements.
Additionally, above-ground tanks are more vulnerable to vandalism and accidental collisions with vehicles. They may require additional security systems such as alarms, CCTV, and lighting to mitigate these risks.
To minimize the risks associated with above-ground fuel tanks, it is essential to follow safety requirements and regulations. This includes monthly inspections for leaks, corrosion, and damage, with proper documentation and prompt correction of any deficiencies. Double-walled tanks are preferable to single-wall tanks as they provide extra protection from the elements and leaks.
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They are prone to corrosion, rust and deterioration
Above-ground fuel tanks are convenient for storing fuel at facilities or jobsites. However, they are susceptible to corrosion, rust, and deterioration, which can compromise their structural integrity and lead to spills, leaks, and environmental contamination.
Corrosion in above-ground fuel tanks often occurs from the inside out, making it crucial to regularly inspect and address any issues. Water build-up in tanks during warmer months, due to heat gain and evaporation, can lead to microbial contamination and corrosion. Regular dewatering of tanks and early detection of contamination are essential to prevent corrosion and maintain fuel stability.
To protect against corrosion, consider using corrosion-resistant finishes, such as Hammerite Direct to Rust Metal Paint, which repels water and prevents rust. Additionally, implementing a bund (secondary containment) made of concrete or brick is legally required to contain and prevent spillages. It should be able to hold 110% of its contents to safely capture any leaks or overfill.
Steel tanks, commonly used for bulk fuel storage, are robust and non-porous but prone to corrosion from weather conditions like heat, condensation, and UV light. To extend the lifespan of steel tanks, proactive maintenance measures such as regular inspections and corrosion protection coatings are recommended. Visual inspections should be conducted monthly, looking for shell distortions, deteriorating paint coatings, and signs of rust or exposed steel, which indicate potential corrosion.
Underground fuel tanks offer natural insulation and protection from environmental hazards, reducing the risk of corrosion, deterioration, and damage. However, above-ground tanks remain a popular choice due to their convenience and accessibility, especially in construction sites and areas with limited space.
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They require safety measures to be implemented
Above-ground fuel tanks are highly convenient for businesses that require frequent refuelling of vehicles and equipment. However, they do come with certain risks that need to be mitigated through safety measures. Firstly, it is important to choose a suitable tank type. Double-walled tanks are preferable to single-wall tanks as they offer an extra layer of protection from sun, rain, and punctures. In the event of a leak, the outer tank will contain the fuel, preventing environmental damage. Double-walled tanks are also more resistant to corrosion and leaks.
When setting up an above-ground fuel tank, it is crucial to place it on a solid, level foundation that can withstand the weight of a full tank. The area surrounding the tank should be kept clear, with no potential sources of ignition such as open flames, electrical appliances, or running engines. The National Fire Protection Association (NFPA) recommends a distance of at least 40 feet between the tank and any buildings or water tributaries. Additionally, the tank should be inspected regularly for leaks, corrosion, and other damage, with any issues addressed promptly.
To further enhance safety, it is recommended to install a roof structure over the tank to shield it from the elements. The tank should also be equipped with an anti-siphon valve and an emergency shut-off ball cock valve to prevent fuel loss and environmental contamination in the event of a leak. Furthermore, a water separator and fuel filter should be installed in line after the fuel pump to ensure that the fuel is water-free and clean before entering sensitive equipment.
Compliance with regulatory laws is also essential. Businesses should be aware of local fire fuel regulations and the rules set by the Environmental Protection Agency (EPA) and the Department of Natural Resources (DNR). In the US, facilities with above-ground storage tanks holding oils may be subject to the EPA's Spill Prevention, Control, and Countermeasure (SPCC) regulation. Proper labelling of tanks is also crucial, with visible labels indicating contents, hazards, storage capacity, and tank ID number.
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Frequently asked questions
Above-ground fuel tanks are large containers designed to store various liquids, including fuels such as gasoline, diesel, and oil, as well as chemicals, water, and other substances. They are typically placed outdoors or within dedicated containment areas.
Above-ground fuel tanks can be filled by mobile refuelling services. It is recommended that tanks are filled to up to 95% of their capacity and that fill-ups should occur only once per month.
Above-ground fuel tanks are usually made of stainless steel, fiberglass, or polyethylene. They can also be made of reinforced concrete.
Above-ground fuel tanks are easy to install, maintain, inspect, and repair. They are also less expensive than underground fuel tanks and are better at detecting leaks.
Above-ground fuel tanks are exposed to various environmental factors, making them susceptible to damage from weather events such as hurricanes, floods, and extreme temperatures. They are also at risk of fires and explosions if they are not properly maintained and if safety measures are not implemented.
