Tunnel vision wins major LNG contract

AUSTRALIAN mining, construction and services contractor Theiss has been awarded a $134 million contract by Saipem Australia to construct a tunnel from mainland Queensland to Santos’s
Gladstone LNG project on Curtis Island.
The 4.3km tunnel will run under a section of water known as The Narrows and serve as the conduit for Santos’s gas transmission line.
Thiess will use a tunnel-boring machine to excavate the tunnel, which will have an internal diameter of 3.4m and be lined with concrete segments cast in-situ.
Mobilisation began on site in September, and tunnelling activities are scheduled to begin later this year. Thiess managing director Bruce Munro said winning the contract would aid the company in becoming more involved in the LNG sector.
“Thiess’s versatile tunnelling capability is already being deployed in the LNG sector in Western Australia and we’re excited to now bring our tunnelling expertise to Queensland’s LNG industry,”
he said.The tunnelling contract is not the first won by the company: Thiess worked on the $60 million construction of a 1.2km-long tunnelled shore crossing at Chevron’s Wheatstone project in December last year.
Since then, Thiess has secured a number of deals with Chevron for work on the Wheatstone project, including a $500 million agreement to build LNG storage and condensate tanks and $450 million contract for site preparation works for the downstream portion of the development. Thiess is also completing the construction village, site preparation and temporary facilities for the Gorgon LNG project on Barrow Island.

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