A storage system designed with one tank enclosed inside another to provide secondary containment and enhanced leak protection.
Overview
This type of storage solution is widely used in fuel and chemical applications where environmental protection and product integrity are critical. The dual-layer construction acts as a safeguard against accidental leaks or structural failure.
If the internal container develops a fault, the surrounding shell captures the escaped material and prevents it from reaching the environment.
How the System Protects Against Leaks
The dual-layer structure works in two directions:
- If the inner vessel leaks, the outer shell contains the product
- If the outer shell is compromised, the inner layer protects stored material from groundwater intrusion
This added redundancy significantly reduces environmental risk and product loss.
Double Wall Tank
Environmental and Safety Benefits
Using this containment method helps facilities comply with environmental regulations and reduces the likelihood of soil or groundwater contamination. It is commonly adopted in locations where leak prevention and monitoring are essential.
It is primarily used to safely store fuels or hazardous liquids while minimizing environmental risk.
The second layer provides containment if either the internal or external structure fails.
In many jurisdictions, secondary containment systems are recommended or required for fuel and chemical storage.
Yes. Many installations include monitoring systems between the two layers to detect leaks early.
They are often used at fuel depots, industrial facilities, and locations with strict environmental compliance requirements.
