Partnering to Secure High-Capacity On-Site Fuel Reserves for Standby Power Generation

Atlantis Tanks—through our specialist StoraFUEL brand—recently collaborated with leading generator manufacturer YorPower Ltd to design, fabricate, and deliver a high-capacity diesel storage and fuel management system.

Centered around a bespoke 32,200-litre steel bunded fuel tank, this project highlights our commitment to engineering complete, compliant, and automated fuel backup infrastructure for major commercial power installations.

When managing mission-critical standby power generation systems, fuel integrity, containment compliance, and automated fuel transfer are paramount. YorPower required an end-to-end engineered fuel storage solution equipped with active fuel polishing, automated duplex pumping, and full Building Management System (BMS) telemetry integration.

Precision-Engineered Fuel Storage Built to BS 799 Part 5 Standards

At the core of the installation is the 32,200-litre steel bunded oil/diesel storage tank. Fabricated using high-grade structural steel and reinforced with internal tank bracing, this system is engineered to provide decades of structural rigidity and leak-free reliability under demanding operational conditions.

To accommodate specialized auxiliary day-tank configurations, the project also incorporated a complementary 4,000-litre steel bunded oil/diesel tank, providing multi-tier storage flexibility across the facility.

32,200L System Key Specifications:

• Dimensional Profile: Outer tank dimensions measure L 6650mm (incl. cabinet) × W 2500mm × H 2500mm; Inner tank dimensions measure L 5550mm × W 2420mm

•  × H 2495mm (excluding bearers and fittings).

• Capacity Profile: Brimful capacity of 33,510 litres, nominal capacity of 32,672 litres, and a usable capacity (with overfill prevention) of 32,200 litres.

• Weight Profile: Approximate dry weight of 5,457 kg, with a full wet operating weight of 32,969 kg.

• 110% Secondary Containment: Integrated outer steel bund engineered with 110% capacity relative to the total liquid stored, ensuring full compliance with UK Control of Pollution (Oil Storage) Regulations, SEPA, EA Guidelines, and Water Environment Regulations.

• Integrated Equipment Enclosure: Features a full-size front-mounted security cabinet (650mm deep) with cabinet ventilation and an heavy-duty lockable roller shutter door.

• Optimized Socket Architecture: Configured with a 610mm manway with gasket and bolted lid, dedicated 2″ fill point with lever ball valve, non-return valve and drip tray, top suction port for sludge drain, 1″ pump feed and return connections, 1″ top feed and return lines dedicated for fuel polishing, and multiple 1.5″ tank and bund sockets.

• Integrated Handling & Mounting: Structural full-width support bearers, earthing bolt, and four heavy-duty lifting eyes for safe crane positioning when empty.

Automated Fuel Transfer & Active Fuel Polishing

To guarantee that generator fuel remains pristine and seamlessly transferred during critical power cuts, the installation includes specialized tank-mounted pumping and fuel conditioning systems:

1. Duplex Fuel Transfer System

• High-Flow Transfer: 230V 50 LPM duplex centrifugal pump system mounted directly inside the weather-protected cabinet compartment.

• Automated Control Panel: Alternating 240V pump set control panel with Hand/Auto modes, visual/audible alarms, and complete BMS integration (Pump 1/2 Tripped, Power Failure, Common Alarm).

• Seamless Transfer: Configured to interface directly with client generator day tank and belly tank float switches for automated fuel supply.

2. Active Fuel Polishing System

• Fuel Quality Maintenance: 230V 50 LPM system engineered to maintain stored diesel to the strict ISO 4406:2017 cleanliness standard.

• 2-Stage Filtration: Incorporates a 10-micron particulate/water retention filter and a 3-micron absolute particulate filter with visual pop-up blockage indicators.

• Automated Scheduling: 7-day multi-function timer for programmed filtration cycles, self-priming liquid ring pump, and direct BMS output connections.

Advanced Telemetry, Overfill Protection & Electrical Integration

To ensure maximum operational security and simple inventory tracking, the complete assembly is paired with precision monitoring instruments:

• Automated Overfill Limiter: 2″ aluminium mechanical overfill prevention valve screwed into a 2″ BSPP full socket, compatible with standard diesel, biodiesel B30, and heating oils.

• Digital Tank Telemetry: 230V O.L.E C2020 digital tank gauge kit with 10m probe length providing ±1% accuracy. IP55 weatherproof rated with a backlit display readout in litres and percentage bar, complete with 4–20mA output for remote BMS monitoring.

• Bund & High-Level Alarms: Independent bund and high-level probe alarm kits providing immediate alerts against fluid accumulation or potential overfills.

• 4-Position Float Switch: Brass and polypropylene 4-switch Rochester float array for accurate liquid level signaling.

High-Performance Coating & Certified Turnkey Delivery

To withstand harsh external environments while maintaining an executive industrial appearance, the outer tank surfaces underwent a high-durability coating process:

• Surface Preparation: Mechanically cleaned to ST2 standards prior to paint application.

• Protective Coating: Coated with Zinfos 340 WS solvent-borne high-performance anti-corrosive primer and finished with a multi-surface self-priming mid-sheen topcoat (50% gloss).

• Coating Profile: Applied to a controlled thickness of 150 microns wet film / 75 microns dry film thickness.

• Finish: Custom finished in RAL 7024 Graphite Grey.

Factory Assembly & On-Site Logistics

StoraFUEL provided complete Full Mechanical Installation and Certified Electrical Installation compliant with 18th Edition standards. This included pre-mounted Unistrut fixings, pressure testing, factory commissioning certification, internal LED lighting strips, Hager DB boards, and internal trunking.

Final delivery was orchestrated directly to the Leeds site via specialized HIAB Crane Truck Delivery, enabling safe offloading and immediate positioning onto prepared footings.

Technical Project Summary

Specification	Primary Tank	Secondary Tank
Usable Fuel Capacity	32,200 Litres	4,182 Litres
Outer Dimensions (L × W × H)	6650 × 2500 × 2500 mm	2050 × 1830 × 2000 mm
Dry / Wet Weight	5,457 kg / 32,969 kg	836 kg / 4,447 kg
Bund Containment	110% Fluid Capacity	110% Fluid Capacity
Coating & Finish	Zinfos 340 WS (RAL 7024 Graphite Grey)	Zinfos 340 WS (RAL 7024 Graphite Grey)
Fuel Conditioning	50 LPM Active Polisher (ISO 4406)	Mechanical Drop Tube & Filtration
Transfer Pumping	50 LPM Automated Duplex System	Integrated Distribution Provisions
BMS Integration	4–20mA Gauge & Alarm Outputs	4–20mA Gauge & Alarm Outputs

Securing Uninterrupted Power for Critical Facilities

This project demonstrates StoraFUEL and Atlantis Tanks’ capacity to deliver fully integrated, large-scale commercial fuel infrastructure. By combining heavy-duty UK manufacturing with advanced fuel polishing, automated pump controls, and certified electrical assembly, we help generator specialists and commercial clients safeguard their continuous power requirements.

If you want to view similar custom engineering projects across the public sector, explore our commercial fuel storage case studies.