
A fuel oil day tank is a storage tank that provides fuel for boilers, emergency generators, or other stationary engine-driven equipment. Day tanks are designed to ensure that the equipment has enough fuel to run for an extended period without interruption. They are typically located near the equipment they fuel and are connected via a fuel line. Day tanks come in various sizes and configurations, including double-wall tanks with closed interstitial spaces for leak monitoring and single-wall tanks with open-top rupture basins. These tanks can be custom-designed to fit specific requirements and can range in size from 20 to 620 gallons or larger.
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What You'll Learn
- A fuel oil day tank is a storage tank for fuel oil
- They are used for boilers, generators or other stationary engine equipment
- Day tanks are typically double-walled with a closed interstitial space for leak monitoring
- They can also be single-walled with an open-top rupture basin
- Day tanks are custom-designed to fit application requirements and range from 20-620 gallons

A fuel oil day tank is a storage tank for fuel oil
Day tanks are typically located near the generator or equipment they supply and are connected via a fuel line. They can come in various configurations, including double-wall tanks with closed interstitial spaces for leak monitoring, open-top rupture basins, and single-wall tanks. These tanks can be custom-designed to fit specific requirements and are available in a range of sizes, typically from 20 to 620 gallons, but larger units can also be provided.
The day tanks are usually fabricated from 10-gauge steel and come with all the necessary instrumentation and pumping equipment mounted on them. They may also have control panels, either mounted on the tank or nearby, that allow for monitoring and control of fuel levels and pumping systems. These control panels are designed with safety and flexibility in mind and often include features such as leak indication and multi-level switch control of pumps.
Additionally, day tanks can be integrated with remote fill systems, which offer innovative and cost-effective solutions for generator fueling. These systems can include features such as concealment of the remote fill, high-pressure pumped systems for high-rise applications, leak detection, and integration with building management systems. Overall, fuel oil day tanks play a crucial role in ensuring the reliable operation of diesel generators and other equipment by providing a dedicated fuel storage solution.
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They are used for boilers, generators or other stationary engine equipment
Fuel oil day tanks are designed to provide a local supply of distillate or diesel fuel for boilers, emergency generators, or other stationary engine-driven or oil-fired equipment. They are an essential component of a fuel supply system, offering a reliable source of fuel for critical applications.
Day tanks are available in various sizes and configurations to meet the diverse needs of boilers, generators, and other equipment. These tanks can range from 20 to 620 gallons in capacity, with larger units also available for specific requirements. The typical configuration is a double-wall tank with a closed interstitial space for leak monitoring, providing enhanced safety measures. Alternatively, day tanks can also be designed as single-wall tanks with an open-top rupture basin for leak containment.
For boilers, day tanks ensure a consistent fuel supply, maintaining stable operations and minimizing disruptions. They are particularly crucial for dual-fuel boilers, where an immediate fuel source is necessary for efficient performance. Similarly, day tanks are essential for emergency generators, providing a reliable fuel reserve during power outages or peak demand periods. This local fuel supply ensures that generators can rapidly activate and maintain power continuity.
In addition to boilers and generators, fuel oil day tanks are also utilized for other stationary engine equipment. This includes any oil-fired or engine-driven machinery that requires a consistent and readily available fuel source. By employing day tanks, facilities can ensure the uninterrupted operation of critical equipment, reducing the risk of downtime due to fuel shortages.
The versatility of fuel oil day tanks extends to their customization options. These tanks can be custom-designed to fit specific space constraints, such as door openings or height restrictions. Additionally, day tanks come equipped with necessary instrumentation, pumping equipment, and control panels, enhancing their functionality and ease of use. By tailoring the size, shape, and features of the day tanks, facilities can optimize their fuel storage and supply systems, ensuring the reliable operation of boilers, generators, and other vital equipment.
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Day tanks are typically double-walled with a closed interstitial space for leak monitoring
A day tank is a storage tank that stores fuel for diesel generators, boilers, or other stationary engine-driven equipment. It ensures that the generator has enough fuel to run for an extended period. Day tanks are typically double-walled with a closed interstitial space for leak monitoring. This means that the tank has two walls, creating a closed space between them, which allows for the detection of any leaks.
The typical configuration of a day tank is a double-walled tank with a closed interstitial space. This design provides a secondary containment layer, adding an extra level of protection against fuel leaks and spills. The closed interstitial space is the area between the two walls of the tank, which is sealed off from the outside environment.
This closed interstitial space serves as a critical component for leak monitoring and detection. By maintaining a closed and controlled environment, any leaks or spills from the inner wall of the tank will be contained within the interstitial space. This prevents the fuel from escaping into the surrounding area, reducing the risk of environmental contamination and fuel loss.
Additionally, the closed interstitial space is often equipped with sensors or monitoring systems that continuously check for the presence of fuel. These sensors can detect even small traces of fuel, providing early warning signs of potential leaks. This allows for proactive maintenance and repair, minimizing the impact of any leaks and ensuring the safe and efficient operation of the day tank.
Day tanks can range in size from 20 to 620 gallons, and they can be custom-designed to fit specific requirements and restrictions. They are an essential component for reliable fuel storage and supply, ensuring that generators and equipment have a consistent fuel source to maintain their operations.
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They can also be single-walled with an open-top rupture basin
Day tanks are a reliable source of fuel oil storage for boilers, emergency generators, or other stationary engine-driven or oil-fired equipment. They are designed to ensure that the generator has enough fuel to run for an extended period. Day tanks are typically located near the generator and connected via a fuel line.
While the typical configuration is a double-walled tank with a closed interstitial space for leak monitoring, day tanks can also be single-walled with an open-top rupture basin. This configuration offers 160% containment, providing a larger leak space than the double-walled option. Single-walled day tanks may be installed in a containment dike area and can be custom-designed to meet specific size restrictions, with sizes ranging from 60 to 600 gallons or more.
These single-walled day tanks are often UL142 or UL2085 tested and designed, fabricated with 10-gauge steel, and equipped with features such as leak indication, multi-level switch control of pumps, continuous level indication, and a return pump for safety and flexibility. They can also be fitted with locally mounted control panels, which can be either mounted on the tank or installed nearby.
Overall, single-walled day tanks with an open-top rupture basin offer a flexible and safe option for fuel storage, allowing for customisation to meet specific size requirements while providing essential leak containment and monitoring capabilities.
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Day tanks are custom-designed to fit application requirements and range from 20-620 gallons
A day tank is a storage tank that stores fuel for diesel generators, boilers, or other stationary engine-driven equipment. It ensures that the generator has enough fuel to run for an extended period. Day tanks are custom-designed to fit application requirements and range from 20-620 gallons in size, with larger units also available.
The typical configuration is a double-wall tank with a closed interstitial space for leak monitoring. A second type of configuration is an open-top rupture basin where the leak space is open. A third option is a single-wall day tank, which may be installed in a containment dike area. Day tanks can be designed to meet any size restriction, including door openings or height restrictions. They are fabricated from 10-gauge steel and are UL142 or UL2085 tested and designed.
Day tanks are often equipped with accessories that are mounted to the tank and shipped as a unit. These accessories can include control panels, which may be mounted on the tank or nearby. Control requirements can range from simple sensors to a control panel with a touchscreen operator interface.
Remote Fill Systems, for example, designs and manufactures custom products for generator fueling, including pumped remote fill systems for high-rise applications.
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Frequently asked questions
A fuel oil day tank is a storage tank that stores fuel for diesel generators, boilers, or other stationary engine-driven or oil-fired equipment. It ensures that the generator has enough fuel to run for an extended period.
The typical configuration for a fuel oil day tank is a double-wall tank with a closed interstitial space for leak monitoring. They can also be configured as single-wall tanks with an open-top rupture basin or as custom-designed tanks to fit specific requirements and space restrictions.
Fuel oil day tanks can come in various sizes, typically ranging from 20 to 620 gallons, but they can also be custom-made to fit specific space restrictions and requirements.











































