Containment of a Diesel Tank
Containment refers to the safety systems put in place to prevent diesel spills or leaks from contaminating the surrounding environment. This is especially important for above-ground (OTG) diesel storage tanks.
There are typically two types of containment systems:
1. Primary Containment
This is the tank itself — made of steel or other materials — that holds the diesel.
2. Secondary Containment
This is the backup system that catches leaks or spills if the primary tank fails. Common types include:
Bund walls or bunded areas: A wall or enclosure (usually concrete or steel) built around the tank to catch spills.
Typically designed to hold 110% to 120% of the tank’s volume.
Double-walled tanks: Tanks with an outer shell to contain any leakage from the inner tank.
Spill containment pallets: For smaller portable tanks.
Why Containment is Important
Environmental protection: Prevents soil and water contamination.
Fire safety: Diesel is flammable — spills increase fire risk.
Regulatory compliance: Required by environmental and fire safety regulations.
