Belly tanks

CGH is a manufacturer of industrial steel tanks that has supplied solutions for standby power and data centres for many years. CGH belly tanks are rectangular, double-wall fuel tanks installed directly beneath a generator set or container, or alongside the unit.

They store diesel or HVO and give the generator set the run-time autonomy required by the facility design. We design each tank for a specific generator set: its footprint, weight, fuel connection layout and required run time.

We produce tanks in standard container sizes as well as in dimensions specified by the customer.

Applications of CGH belly tanks

CGH belly tanks are used for:

Data centres and critical infrastructure: fuelling generator sets in data centres, hospitals and critical infrastructure facilities.

Emergency power: fuel storage for emergency power systems (UPS + generator set).

Diesel and HVO: storage and distribution of diesel and HVO.

Limited space: temporary and permanent solutions where space is limited.

Construction sites, mines, industry: fuelling containerised generator sets on construction sites, in mines and at industrial sites.

We adapt our designs to the specific nature of our customers’ production processes.

Purpose

By choosing CGH belly tanks, you get:

A load-bearing structure designed for the weight of the generator set or container.

Double-wall construction with interstitial space monitoring.

A compact, rectangular shape that takes up no additional floor space.

Compliance with EN 1090 and the legal requirements for fuel storage.

The option of stainless or acid-resistant steel construction.

Technical data of CGH belly tanks

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Description:

Rectangular single- or double-wall tanks made of S235JR steel (optionally stainless steel 1.4301/1.4307 or acid-resistant steel 1.4404).
Ribbed load-bearing structure designed to support a generator set or container on the tank lid.
Optional sloped bottom with a drain nozzle for removing water and sediment.
The number, size and location of fittings are agreed with the customer at the design stage.
Electronic leak detection system for the interstitial space.
Tanks are manufactured in accordance with EN 1090.

Material:

S235JR carbon steel, optionally stainless or acid-resistant steels.

Wall construction:

Single or double wall, with the option of interstitial space monitoring.

Medium:

Diesel, HVO.

Dimensions:

Typical capacities from 10 to 50 m³ (see table below). Other sizes, including standard 20 ft and 40 ft container footprints as well as non-standard ones, are available on request.

Operating pressure:

Unpressurised (atmospheric).

Operating temperature:

from -20°C to +50°C.

External finish:

Anti-corrosion coating in class C3M, optionally C4M/H or C5M/H.

* Other configurations available on request.

CGH belly tanks – standard equipment

inspection manhole with cover
nozzles: filling, fuel suction and return, vent
interstitial space nozzles
transport lugs
plate or frame for mounting the generator set

CGH belly tanks – optional equipment

Interstitial space monitoring with alarm signalling.
Fuel level measurement system with output to BMS.
Overflow valve and fill-level indicator.
Fuel polishing system (fuel circulation and cleaning) for long-term storage.
Filtration system.
Tank heating and insulation.
Specialist anti-corrosion coatings C4M/H, C5M/H and internal coatings.
Customised dimensions and colours, customer logo on the casing.

External tank surface

The external surface is shot-blasted to cleanliness grade Sa 2.5 to PN-ISO 8501-1 and protected with an anti-corrosion coating in class C3M or higher. Shot blasting and painting are carried out in the CGH paint shop, a 2,600 m² hall with temperature- and humidity-controlled booths.

Why choose CGH belly tanks

Safety: the double wall and continuous interstitial space monitoring protect the ground and the facility from fuel leaks.

Load capacity: a structure calculated for the weight of the generator set, the container and the dynamic loads from engine operation.

Space saving: the tank acts as the foundation for the generator set – it requires neither a separate footprint nor a containment bund.

Fuel quality: the fuel polishing and filtration system maintains the quality of diesel and HVO during long-term storage.

Flexibility: dimensions, fittings and equipment are selected for the specific generator set model.

Completeness: belly tanks can work with larger underground double-wall tanks to form a complete emergency power supply system.

Indicative belly tank capacities

Usable capacity [m³]	Width [mm]	Length [mm]	Height [mm]
6.1	2 438	6 058	600
16.0	3 200	9 000	800
17.0	3 640	12 730	530
18.4	3 600	12 300	600
18.5	2 438	9 125	1 200
21.6	3 000	13 000	800
28.4	3 200	16 000	800
29.1	3 000	14 000	1 000
29.1	4 000	13 110	800
33.4	3 000	14 600	1 100
37.9	3 900	20 000	700
39.4	2 438	12 192	1 910
44.6	4 000	14 602	1 100

* Usable capacity is given. Other sizes are available on request, including tanks for standard 20 ft and 40 ft containers and tanks with non-standard footprints tailored to customer requirements.

Indicative generator set run time from a belly tank

Generator set rating [kVA]	Consumption at 100% load [l/h]	Fuel for 24 h [m³]	Fuel for 48 h [m³]
500	approx. 100	approx. 2.4	approx. 4.8
1 000	approx. 200	approx. 4.8	approx. 9.6
2 000	approx. 400	approx. 9.6	approx. 19.2
3 000	approx. 600	approx. 14.4	approx. 28.8

* Indicative values at a consumption of approx. 0.25 l/kWh. We size the capacity based on the generator set data sheet and the facility’s required autonomy.

Maciej Kornik

Sales Manager

664 974 849

maciej.kornik@cgh.com.pl

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