Clean fuel, clear conscience: Safeguarding hospital power systems

In healthcare, power reliability is essential. For hospital estates and Facilities Managers, maintaining emergency generator performance is a top priority. While generators are regularly serviced, the diesel fuel that powers them is often neglected. Fuel polishing offers a targeted solution to protect performance, ensure compliance, and reduce the risk of failure.

Why Stored Fuel Degrades
Diesel stored long-term in standby systems degrades over time due to temperature changes, condensation, oxidation, and microbial growth. This leads to sludge, water accumulation, and biofilm – all of which can clog filters, damage injectors, and cause generator failure during an outage.
Fuel can degrade within 6–12 months, becoming acidic and corrosive. Condensation encourages microbial contamination, which accelerates tank corrosion and engine wear.

What fuel polishing does

Fuel polishing is a multi-stage process that removes water, particulates, sludge, and microbes from stored diesel. A system from WASP typically includes:

• Multi stage filtration (to 2 micron with W-PFS and down to 1 or 0.5 micron with our Absolute Polishing add-on).
• Free and Emulsified Water removal (depending on system).
• Fuel conditioning.
• Chemical biocide dosing option can be added if needed.

Polishing systems may be mobile or permanently installed, and can restore fuel to ISO cleanliness levels — critical for modern generators.

The Impact on Emergency Power Systems
Contaminated fuel is a major risk for hospitals. Generator failure during a power cut can jeopardise life-critical systems. Fuel polishing helps ensure:

• Compliance with generator manufacturer fuel standards
• Reliable generator start-up and operation
• Extended fuel life and reduced waste
• Support for regulatory compliance through regular quality assurance

Whilst global healthcare regulations vary, fuel quality is increasingly recognised as vital for emergency preparedness.

Efficient and cost-effective

Fuel polishing is far more economical than routine fuel replacement, especially with bulk storage. It protects generator components, reduces unplanned downtime, and supports environmental goals by cutting fuel waste.

A Smart Preventative Measure
Incorporating automated or scheduled fuel polishing into maintenance plans enhances reliability and reduces human error. It’s a practical step in strengthening resilience and ensuring power availability when it’s needed most. For hospitals, fuel polishing isn’t just good practice — it’s essential. It safeguards patient safety, ensures compliance, and strengthens the reliability of critical backup power systems in an increasingly unpredictable energy environment.

Fuel polishing   |   W-PFS Premium range   |   WB Classic range  |   W-HL High Lift range

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