• TBM for Humber project delivered

TBM for Humber project delivered

28 July 2017

In a joint venture with Skanska and PORR Bau GmbH, A.Hak is well underway with the construction of a new 42” high pressure gas pipeline. Under the River Humber, at the eastern coast of England, a five kilometre pipeline will be installed in a pipeline tunnel. This is the longest pipeline installed anywhere as a single string. For customer National Grid, this project is of critical importance: some twenty percent of their domestic gas volume will pass this pipeline annually once operational.

Proper soil surveys and solid engineering work determined the required specifications of all tunnel elements and the TBM (tunnel boring machine). This data was needed to order the right TBM. The TBM was delivered by German firm Herrenknecht. The photograph above shows how final testing in Germany takes place; the so called Factory Acceptance Test (FAT).

The actual drilling will start after the summer, as a next milestone towards the early 2020 deadline for transferring the tunnel and all corresponding documentation to National Grid.

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