Diesel Tank Cleaning: A Practical Guide

Cleaning your diesel tank regularly is not just about routine for the sake of it. Over time, diesel tanks can accumulate contaminants (water, sludge and microbial growth), which will compromise the quality of fuel. So regular cleaning is a critical part of ensuring the efficiency and longevity of your diesel-powered equipment. This edition of our blog features a comprehensive guide to cleaning, and delves into issues around it such as the signs that indicate you need to clean, the debate between DIY and professional cleaning and the recommended cleaning frequency. Plus, how Tanks R Us can be your trusted partner when it comes to diesel tank cleaning.

Why Diesel Tank Cleaning Matters

As a fuel, diesel is susceptible to contamination from various external sources. These include water ingress, microbial growth (often referred to as diesel bug) and the accumulation of sediment. When diesel is affected by these contaminants it can lead to various issues – so regular maintenance, including cleaning, is essential.

• Reduced fuel efficiency: Contaminated diesel burns less efficiently, which leads to an increased consumption of fuel.
• Engine damage: Particulates and water can cause corrosion and wear in fuel injectors and pumps.
• Downtime: If there is equipment failure due to contaminated fuel it can result in operational downtime, which could be costly.
• Increased costs: Frequent filter replacements and repairs to your equipment add to expenses.

Signs Your Diesel Tank Needs Cleaning

There are various indicators that your diesel tank needs cleaning. Regular inspections can help detect these signs early, allowing for timely cleaning.

• Filter clogging: If fuel filters need replacing more often than usual, it may indicate that there’s a problem with contamination.
• Performance issues: If the diesel is for an engine, and it experiences difficulty starting, a loss of power or irregular idling, it could be the result of contaminated fuel.
• Sludge or sediment: Visible accumulation of sludge or sediment at the bottom of the tank is a clear sign of contamination.
• Water: The presence of water in the diesel can be detected through visual inspection or by using water detection paste.
• Unusual odours: A sour or rotten smell may indicate some microbial growth.

Step-by-Step Guide to Diesel Tank Cleaning

Cleaning a diesel tank involves going through several steps to ensure that you achieve a thorough decontamination.

Preparation: It’s always ‘safety first’, so you should wear appropriate PPE (Personal Protective Equipment), including gloves and eye protection. Ensure the area is well-ventilated so that you avoid inhaling fumes. Gather the necessary tools and equipment (such as pumps, containers, cleaning agents and absorbent materials).

Remove diesel: Use a pump to drain the tank. Remove all of the diesel, and store it in approved containers (for filtration or disposal). Then remove any sludge or sediment from the bottom of the tank.

Cleaning: Apply cleaning agents, and use a diesel-compatible solution to break down any residues. Use brushes or pressure washers to clean thoroughly, especially if your tank has baffles. Flush the tank with clean water to remove cleaning agents and any loosened debris.

Drying: Remove moisture by using air dryers, or allow the tank to air dry completely to prevent water contamination.

Inspection: Inspect the tank for damage including corrosion, leaks or structural issues. Confirm the tank’s cleanliness (ie. that all contaminants have been removed).

Refuelling: If you’re reusing drained diesel, filter it properly to remove any remaining contaminants. Or, use new, clean, high-quality diesel fuel to refill the tank.

Documentation: Keep detailed records of the cleaning process, to show compliance and for any required future reference.

How Often Should You Clean Your Diesel Tank?

Regular diesel tank cleaning is important, but the frequency of doing so actually depends on several factors. As a general guideline, it's sensible to clean diesel tanks every 1 to 3 years. However, when you do regular inspections they can help determine the appropriate schedule for your specific situation.

• Use: Tanks used frequently may require more regular cleaning.
• Diesel quality: Poor-quality diesel can lead to faster contamination.
• Environmental: Humid or wet environments increase the risk of water ingress and microbial growth.
• Tank material: Certain materials are more prone to corrosion and may need more frequent cleaning.

Tanks R Us: Your Diesel Tank Cleaning Partner

Although, as shown above, it is possible to clean your diesel tank yourself, it’s much more efficient and productive to involve the professionals. When it comes to diesel tank cleaning, Tanks R Us is a reliable and experienced option. We offer comprehensive service, with our fully-trained OFTEC approved engineers able to inspect and clean your diesel storage tanks, both inside and out. Whether you store diesel on a farm for commercial usage or for domestic use on your off-grid residence, Tanks R Us can provide highly efficient diesel tank cleaning services. Give us a call for a quote.