A Specifier’s Guide To Spill Containment for Mission-Critical Fuel Systems

How These Components Protect Against Fuel Spills at the Fill Point

In places like data centers, aboveground generator fuel tanks and remote fill systems have to be ready when they’re needed, with every component doing its part to keep diesel contained.

Spill containment equipment is designed to capture drips, splashes, and small incidental delivery spills before they reach the surrounding area.

For those specifying AST equipment on a mission-critical site, the spill containment box may be small, but its capacity, construction, drainage, and installation carry significant environmental and operational importance.

Spill Containment at the Fill Point

A spill containment box is a liquid-tight, weather-resistant container installed around the fuel fill connection. Its job is to capture small amounts of fuel that may be released while a delivery hose is connected or disconnected.

For many AST and genset applications, a properly selected spill box can provide the fill-point containment the project needs when its capacity, construction, drainage, installation, and any applicable listing requirements meet the needs of the project.

Depending on the product, features can include:

  • A sloped or dished bottom that directs captured product toward the drain.
  • A weather-deflecting lid that keeps precipitation and debris out of the containment area.
  • Lockable access that helps protect the fill connection.
  • Optional finishes, including powder coating or epoxy paint, depending on the product.
  • A drain arrangement that allows captured fuel to be drained or otherwise removed in accordance with the system design.

These details can make fuel deliveries easier to manage while reducing the likelihood that spills remain around the fill point.

What Specifiers Should Consider When Selecting a Spill Containment Box

Select spill containment equipment that protects the fill connection and works with the fuel-storage system.

Specifiers should focus on the requirements at the fill point and overall system design. Start with the tank and fill configuration, required containment capacity, applicable listing requirements, drainage arrangement, and project-specific requirements.

Capacity is one consideration because spill containment boxes are available in different sizes and configurations. The goal is to select equipment that fits the intended application rather than treating spill containment as a one-size-fits-all component. Manufacturers may also offer different connection arrangements or custom configurations to accommodate project-specific requirements.

The fill-point configuration and installation environment can also affect the selection. Available space, exposure to weather, access, drainage, and compatibility with the fill piping should all be considered. Remote fill arrangements can introduce additional installation considerations because the fill connection may be located away from the storage tank and positioned to provide practical access for fuel delivery.

Looking at these details early in the specification process can help ensure that no-spill fuel containers work with the physical layout of the fuel system and the way the system will actually be filled and maintained.

Why Spill Containment Matters in Mission-Critical Fuel Systems

Data centers, hospitals, and other mission-critical operations depend on generator fuel systems being ready when there is a utility power failure.

That reliability has to be in place before a generator is needed. Fuel has to be delivered, stored, monitored, and transferred safely throughout the life of the facility. A properly specified spill containment box helps control one of the routine risks associated with that process: small fuel releases that can occur at the fill connection.

Fuel delivery is also a recurring part of operating a standby generator system. Every delivery creates another point at which a hose has to be connected, fuel transferred, and the connection removed. Incorporating spill containment into the fill-point design gives those incidental fuel releases a designated place to be captured and managed.

Spill containment should also work alongside the other safeguards in the system. Spill containment manages incidental releases around the fill point. Overfill prevention helps keep too much fuel from entering the tank. Normal venting manages routine tank breathing during filling and withdrawal, while emergency venting provides pressure relief under emergency conditions.

Each component has a different job, and the effectiveness of the overall system depends on specifying the right equipment for each one.

Specifying Spill Containment Equipment With a Single-Source Manufacturer

When you’re specifying no-spill fuel containers for a data center genset installation, working with a manufacturer that offers multiple fuel-system components can simplify sourcing, documentation, and technical support.

Start with the tank and fill configuration, required capacity, applicable listings, drainage arrangement, and project-specific requirements. The spill containment box should be selected according to the needs of the fill point and the overall fuel-system design.

Clay & Bailey has manufactured fuel-storage tank equipment in Kansas City since 1913 and serves the genset, aboveground storage tank, and underground storage tank industries. Our AST equipment lineup includes spill containment boxes, overfill prevention valves, emergency and normal vents, sight gauges, and audible alarms, giving specifiers a single source for many of the components used around a generator fuel-storage system.

Talk with our team about the fill-point protection your site needs.