Works contracts executed with precision engineering, advanced de-watering systems, and rigorous safety standards.
Volatile liquid storage tanks demand professional maintenance to clear accumulated sludge, rust flakes, and water pockets. Hans Engineering specializes in cleaning underground storage tanks (UST) and aboveground storage tanks (AST) for multiple fuels including **Diesel, Furnace Oil, LDO (Light Diesel Oil), and Ethanol**.
We manage the entire cycle: initial fuel decanting and transfers, sludge extraction using heavy diaphragm pumps, manual scraping, chemical washing, and safe sludge disposal coordination.
Extensively utilized at retail fuel stations and backup generator rooms. Cleared of condensed water pockets and bottom rust sediment.
Vertical and horizontal aboveground storage containing viscous Furnace Oil or LDO. Pre-heated washing is deployed to liquefy hardened sludge.
Tanks requiring absolute moisture elimination due to ethanol's highly hygroscopic nature. Fully dried and vacuum-certified.
| Contaminant | Pre-Filter Status | Post-Filter Standard |
|---|---|---|
| Free Water | Visible pockets | < 100 ppm |
| Particulates | Rusty flakes, sand | ISO 18/16/13 |
| Fuel Microbes | Algae / Bacteria slime | Biocide Cleared |
| Fuel Color | Dark, hazy brown | Bright & Amber |
Stored fuel degrades naturally over time, accumulating atmospheric moisture, dust, and rust particulates. This blocks diesel generator injectors, causing severe failure risks at critical facilities (data centers, hospitals, power plants).
Hans Engineering deploys advanced **mobile modular fuel polishing rigs** that process fuel directly inside the tank under a loop circuit. Our systems utilize heavy coalescing filters to isolate free water molecules and absolute-rated particulate elements to strip microscopic contamination down to 2 microns.
Beyond specialist fluid services, we support mechanical plant maintenance teams. We execute annual maintenance contracts (AMCs) and mechanical service support for industrial heaters, rotary fuel pumps, transfers systems, and pipe manifolds.
Our service is fully backed by our wholesale trading arm, meaning we supply original spares directly to the site without intermediate lead times.
For large plants, commercial purchasing demands standard formats. We provide: