Diesel fuel provides reliable power for equipment, generators, and vehicles. Proper storage maintains fuel quality and ensures equipment operates correctly when needed. However, diesel degrades over time and storage systems face specific environmental challenges.
This article outlines typical complications and provides practical strategies to prevent them, focusing on the care of diesel fuel storage tanks.
Water Contamination and Microbial Growth:
Water represents one of the most common contaminants. It enters tanks through condensation, rain, or via faulty tank seals. Water settles at the bottom of the tank, creating an environment where microbes like bacteria and fungi thrive. This microbial growth forms sludge, clogs filters, and corrodes tank walls from the inside.
How to Avoid It: Install and maintain water separators. Use tank vents with moisture traps. Schedule regular tank inspections and drain any accumulated water from the tank bottom. Consider using biocides as a preventive treatment, following manufacturer guidelines strictly.
Fuel Degradation and Sediment Formation:
Diesel fuel naturally oxidizes and breaks down over time, a process called “aging.” This creates insoluble gums and sediments. These particulates clog fuel lines, injectors, and filters, leading to engine performance issues and potential failure.
How to Avoid It: Practice a “first-in, first-out” fuel rotation policy. Use fuel stabilizers designed for diesel if you plan to store fuel for over six months. Maintain a regular schedule for changing fuel filters on connected equipment. Keep tanks as full as possible to minimize air space and reduce condensation.
Corrosion and Structural Weakness:
Both internal and external corrosion threaten tank integrity. Inside, water and microbial acids attack metal surfaces. Externally, soil conditions and weather can corrode underground tanks, while above-ground tanks face moisture and physical damage.
How to Avoid It: For external care, apply protective coatings and keep the tank area clear of debris. Inspect for rust, cracks, or wet spots regularly. For underground tanks, conduct mandated leak detection tests. Internally, controlling water ingress is the best defense against corrosion.
Leaks and Spills:
Leaks cause product loss, environmental harm, and lead to costly clean-up and regulatory penalties. They often stem from corrosion, faulty fittings, damaged pipes, or overfilling during delivery.
How to Avoid It: Install overfill prevention devices. Inspect all pipes, seals, and valves during routine maintenance. Place durable secondary containment around above-ground tanks to catch drips or spills. Train staff on safe fueling procedures and emergency response protocols.
