As diesel demand rises—on farms, construction sites, and off-grid homes—it’s natural to wonder: can you store diesel in a bunded oil tank safely and legally? The answer is yes, but it takes careful planning. This post dives into chemical compatibility, legal requirements, condensation risks, and best practices for various use cases.

Diesel vs Heating Oil: Key Differences

Although diesel and heating oil share similarities, their storage requirements differ:

  • Refinement & sensitivity: Diesel is often more refined and reacts more to impurities.
  • Stricter filtration: To protect equipment, diesel storage demands higher-grade filtration and more rigorous maintenance.
  • For technical insight into tank design and functionality, see Understanding How Bunded Oil Tanks Work.

Legal & Environmental Considerations

Storing diesel in bunded tanks means meeting certain legal and environmental obligations:

  • Under UK law, you may need to follow the Control of Pollution (Oil Storage) Regulations when storing fuels in bunded containers.
  • For storage of flammable liquids in tanks, HSE’s guidance HSG176 outlines engineering, containment, and safety principles. (HSG176 guidance)
  • Always check local environmental regulations, especially if tanks are close to watercourses or drains.

Practical Considerations for Diesel Storage

  1. Condensation & water contamination
    Diesel is vulnerable to water ingress, which can lead to microbial growth and reduced fuel quality. Use sealed lids, desiccant breathers, and keep tank volumes high to limit vapor space.
  2. Accessibility & layout
    Tanks should allow clear access for refuelling trucks and maintenance. Avoid tight corners or restricted spaces.
  3. Routine maintenance
    Inspect annually for signs of corrosion, leaks, or sludge. Clean filters and strainers to maintain fuel integrity.

Best Practices by Use Case

  • Farms: Position the tank in a visible, accessible area with spill containment and bund capacity.
  • Construction sites: Use secure, elevated placement with spill kits and trained staff.
  • Off-grid homes: Plan for safe delivery access, weather protection, and insulation.

For more on tank choice and material options, check Why Choosing a Plastic Bunded Oil Tank Is Right for You.

Conclusion

With the right precautions, storing diesel in a bunded oil tank is not only possible—it’s safe. The bunded design helps catch leaks, while strong filtration, legal compliance, and good site practices preserve quality and protect the environment. Whether for farming, construction, or off-grid use, follow regulations, conduct regular checks, and choose reliable equipment to make your storage solution sustainable and effective.

Ready to find a model that fits your diesel storage needs? Explore our range of bunded oil tanks designed for safe, compliant use.

Posted on 2 October 2025 in Tips and Advice