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5 June 2024

The ethane tank, the logistical heart of Project ONE

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The Project ONE site in Antwerp is buzzing with activity as more than 1,300 workers are already on site. Over the past two months, the site has already received its first major ‘landmark’: the ethane tank.

At this stage, the focus is still on underground and civil works, such as foundation works, laying underground pipes, roads and utilities.

After the summer, the site will also undergo remarkable changes in height, when the modules arrive and the plant can be built.

Over the past two months, the site has already received its first major ‘landmark’: the ethane tank. This is a ‘cryogenic’ tank, a specially designed container used to store liquid gases. With a capacity of 197,000 m3, it is the largest cryogenic tank in Europe. The tank will store the raw material for the cracker – ethane – which is gaseous under normal atmospheric conditions, but is liquefied for transport by cooling it to around -95°C. The large storage capacity makes it possible to reduce the number of ship transports for the supply of ethane.

The realisation of the tank is a technical feat. In early April, 9000 m3 of concrete was poured over 3 days to cast the floor slab of the ethane tank. Because of the properties of the concrete, it was important to keep these works going 24/7. This was followed in May by the raising of the concrete outer wall, a precision job that required 15 days of non-stop work.  The steel roof will go on later this year, followed by further work on the interior finishing.

Raising the walls of the tank

Pouring the floor slab