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Hinkley Point C tunnel boring work starts beneath Bristol Channel seabed
Work has begun at Hinkley Point C this week to install 38,000 concrete segments required to support the three underground marine tunnels at up to 33 metres below the seabed of the Bristol Channel. These tunnels are part of the nuclear power station being built.
Once complete, the tunnels will form a critical part of Hinkley Point C’s cooling system and will have the capacity to transfer 120,000 litres of water per second.
A key milestone at the UK’s Hinkley Point C construction site in Somerset, England.
The 3.5km the intake tunnel 1 boring has been completed by TBM Mary on Dec 9, 2020. It is the first of 3 off-shore tunnels needed for the nuclear power station’s cooling-water system.
The Intake 2 tunnel has been bored at a 33 meter depth under the Bristol Channel by TBM Mary lying 2300 rings using 13800 segments.
https://tunnellingjournal.com/first-hinkley-point-c-off-shore-tbm-tunnel-complete/
cover tunnel photo by: Matt Brown from London, England / CC BY
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Hinkley Point C Nuclear Power Station - Contractor Balfour Beatty started the 12 month #tunnelling programme in September. The #tunnels will have the capacity to transfer 120,000 litres of cooling water per second, and not one but three will run under the Bristol Channel – 3.5km-long intake tunnels 1 and 2 run 33m below the seabed and one 1.8km outfall #tunnel runs 24m below the seabed.
https://www.newcivilengineer.com/innovative-thinking/tunnels-delivering-hinkley-point-cs-cooling-system-16-12-2019/
Tunnels | Delivering Hinkley Point C's cooling system
www.newcivilengineer.comOn the ground at Hinkley Point C in Somerset, there is construction activity going on everywhere you look. Giant cranes tower over the first of two