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At Andel, we help you tackle one of the most common threats to mission-critical infrastructure: fuel contamination. Whether you are storing diesel, biodiesel blends or red-diesel for standby power systems, our proactive fuel polishing and maintenance programme prevents water ingress, sludge build-up, microbial growth and particulate contamination – all of which can compromise generator performance, shorten equipment life and risk costly downtime.
Our comprehensive approach includes expert sampling, laboratory analysis, filtration and polishing of fuel in-situ, and ongoing system monitoring. With the rise of ultra-low sulphur diesel (ULSD) and high-pressure fuel systems in modern standby generators, maintaining fuel quality is no longer optional – it is a critical business-continuity and ESG requirement. The reality is that stored fuel degrades rapidly: water accumulates in tanks via condensation or leaks, sediments settle, and 'diesel bugs' (microbial growth) proliferate in the presence of water and fuel.
By investing in a regular fuel-polishing programme, you can extend the life of your fuel, reduce the risk of forced tank clean-desludge interventions, safeguard your generator performance and demonstrate governance of your fuel storage assets. Let Andel help you keep your fuel clean, your standby systems ready and your compliance assured.
Fuel polishing has become an essential practice for site managers for sites that store fuel, especially over extended periods.
Dependant on the laboratory results from fuel sampling, Andel can quickly respond by returning to site, removing contaminated fuel, thoroughly cleaning your tanks of contamination, filtering, polishing and stabilising the fuel using specialist state-of-the-art remedial equipment, and returning the refreshed fuel to the clean tank.
Andel can also provide permanent filtration systems to regularly circulate the fuel and remove contaminants.
With exceptional flow rates of 140-200 L/min and high capacity fuel filter housings, the DDM-3 provides all the extra power you need to protect your fuels and get the job done in the shortest possible time, providing:
The Andel philosophy of 'prevention is better than cure' is by far the best option.
This means regular maintenance visits and robust management of your stored fuel. Andel's specialist on-site maintenance services and state-of-the-art equipment will keep you compliant and your stored fuel in optimum condition and ready for use at all times. Andel has been maintaining major oil storage facilities for over 30 years and has gained extensive hands-on experience.
By regularly sampling fuel, you can proactively address issues before they impact your equipment, ensuring reliable, cost-effective operation.
Fuel sampling is essential for maintaining the health and performance of fuel-powered equipment.
Andel's fuel sampling visits involve collecting samples from different parts of a storage tank and sending to an independent laboratory where they are tested for contaminants and impruities. Laboratory results are returned quickly and shared with customers and based on the findings, Andel will recommend the best steps to resolve any fuel-related problems, always providing the best commercial outcome for every customer.
Andel’s oil storage maintenance means regular site visits, robust management, sampling and treatment of stored fuel using state-of-the-art specialist equipment as well as the installation of permanent filtration systems. With Andel you can rest assured that your diesel is always in optimum condition and ready for an emergency at any time, wherever you are in the UK.
Regular fuel quality monitoring ensures the fuel will perform when you need it most – avoiding downtime and costly emergency interventions.
Key issues include water ingress (condensation or leaks), particulate contamination (dust, rust), microbial growth (the so-called 'diesel bug'), very high or low temperatures, and mixing of fuels (or biodiesel content) which can destabilise the fuel.
A proactive maintenance programme recommends regular sampling – ideally at least once every six months or more frequently depending on site conditions (temperature extremes, volume, age of fuel).
Based on the test results you get a clear report and recommendations (for example: filtration needed, microbial treatment, tank cleaning, fuel replacement). This enables cost-effective decisions rather than reactive crisis fixes.
When testing identifies fuel problems, remedial actions include fuel polishing (circulating the fuel through specialist filtration and drying systems), cleaning the tank of sludge/water layers, installing permanent filtration systems to maintain quality.
Yes – but only with a robust maintenance programme. Storing fuel for longer than six months significantly increases risk unless properly managed.
Regular maintenance and sampling help fulfil duty-holder responsibilities for site resilience and business-continuity. For critical infrastructure (e.g., data-centres, hospitals) it supports the assurance that your backup fuel systems will reliably operate when required.
Andel offers over 30 years’ experience in managing fuel/storage for critical infrastructure, combining specialist on-site visits, independent laboratory sampling, and state-of-the-art remedial equipment (e.g., high-flow polishing systems) to keep fuel in peak condition.
Get in Touch
For a more information about our fuel polishing and sampling service and a comprehensive range of our other site services, contact Andel today.
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