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Allseas joined partners and stakeholders in Taiwan for a ceremony formally marking the start of the Yongan–Tongxiao 2 (YT2) offshore natural gas pipeline project and highlighting its role within the island’s energy system.
Awarded by CPC Corporation Taiwan to a 50/50 partnership between Allseas and Boskalis, YT2 is a major engineering, procurement and construction (EPC) project. It is among the longest offshore gas pipelines to be installed in shallow waters.
Within the partnership, Allseas is responsible for offshore pipeline installation and pre-commissioning activities, including the pre-lay installation of concrete mattresses. These works will be executed using advanced pipelay vessels, drawing on Allseas’ experience in large-scale offshore pipelay projects.
Boskalis’ scope includes extensive nearshore and offshore works, such as landfalls, trenching, backfilling, and the protection of pipeline and cable crossings.
Offshore execution is scheduled to commence in 2027. Once completed, the 232-kilometre-long, 36-inch pipeline will connect the Yongan LNG Terminal in southwestern Taiwan with the Tongxiao LNG Transfer Station in the northwest. Running parallel to the existing YT1 pipeline, YT2 will increase the capacity and resilience of Taiwan’s natural gas transmission network.
Blog Summary
Allseas has marked the start of the Yongan–Tongxiao 2 (YT2) offshore natural gas pipeline project in Taiwan alongside project partners and stakeholders. Awarded by CPC Corporation Taiwan to a 50/50 Allseas–Boskalis partnership, YT2 is a large EPC project involving one of the longest shallow-water offshore gas pipelines. The project includes offshore installation, nearshore works, and pre-commissioning activities, with offshore execution planned from 2027.
Frequently Asked Questions
1. What is the Yongan–Tongxiao 2 (YT2) project?
YT2 is an offshore natural gas pipeline project designed to enhance Taiwan’s gas transmission capacity and reliability.
2. Who awarded the YT2 contract?
The project was awarded by CPC Corporation Taiwan to a 50/50 partnership between Allseas and Boskalis.
3. What is Allseas’ scope of work?
Allseas is responsible for offshore pipeline installation and pre-commissioning, including the pre-lay installation of concrete mattresses.
4. What activities are included in Boskalis’ scope?
Boskalis will deliver nearshore and offshore works such as landfalls, trenching, backfilling, and protection of pipeline and cable crossings.
5. When will offshore execution begin and what is the pipeline’s route?
Offshore execution is scheduled to start in 2027. The 232-kilometre, 36-inch pipeline will connect the Yongan LNG terminal in southwestern Taiwan to the Tongxiao LNG transfer station in the northwest.
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