Double wall HSD Oil Storage Tank

About Double wall HSD Oil Storage Tank

• Structure: The tank is composed of two concentric layers: an inner (primary) tank that holds the HSD fuel and an outer (secondary) tank or "bund" that serves as a protective barrier.
• Interstitial Space: The gap between the inner and outer walls is tightly sealed and monitored. In the event of a leak from the inner tank, the leaked fuel is contained within this space.
• Leak Detection: Advanced monitoring systems, such as a vacuum gauge or sensors/alarms, continuously check the interstitial space for any drop in pressure or presence of fluid, providing immediate alerts if a leak occurs.
• Materials: Common construction materials include steel (carbon or stainless steel) or a combination of steel and fiberglass-reinforced plastic (FRP). These materials are selected for durability, corrosion resistance, and compatibility with diesel fuel.
• Configurations: They are available in various shapes (cylindrical, rectangular) and orientations (horizontal or vertical) for both aboveground storage (AST) and underground storage (UST) applications.
• Safety and Compliance: The double-wall design inherently meets stringent environmental regulations and safety standards, such as those set by the EPA (Spill Prevention, Control, and Countermeasure Plan - SPCC) and NFPA (National Fire Protection Association). This high level of containment minimizes the risk of soil and water contamination.
• Accessories: Tanks are typically equipped with essential accessories for safe operation, including fill ports with overfill protection, ventilation systems (vents/breathers), access manholes, loading/dispensing pumps, meters, and level gauges.

• Enhanced Environmental Safety: The primary advantage is superior protection against spills and leaks, safeguarding the surrounding environment.
• Cost-Effectiveness: Although the initial cost may be higher than single-wall tanks, the double-wall design eliminates the need for expensive external containment structures and potentially costly environmental cleanup operations.
• Durability and Longevity: The robust construction and added protective layer result in a longer service life, often several times longer than single-wall tanks.
• Ease of Use: Self-bunded designs are easier to install and transport, as they do not require on-site civil engineering for secondary containment.