Recent advancements at Hinkley Point C are fast-tracking construction on Unit 2, leveraging new technologies and processes.
- The application of Synergic Metal Active Gas (Smag) welding has reduced construction time by 20-30%.
- This methodology improves efficiency by minimising heat distortion during the welding process.
- The world’s largest tower cranes return, streamlining the heavy lifting operations at Hinkley Point C.
- Project leaders emphasise how these innovations are improving productivity while adhering to stringent safety and regulatory standards.
Hinkley Point C has incorporated Synergic Metal Active Gas (Smag) welding in its construction processes for Unit 2, achieving significant efficiency gains. Simon Parsons, the nuclear island director, shared that by adopting Smag welding, construction time has been reduced by 20-30%. This technique addresses previous issues encountered in Unit 1, where the welding process led to excessive heat and distortion, necessitating rework and sequential operations to allow for cooling.
The decision to implement Smag welding has resulted in welding for pools in Unit 2 being completed four times faster than in Unit 1, with minimal distortion and fewer weld defects. Although Smag welding is not novel, its application in nuclear projects required collaboration with designers and regulators to ensure compliance with nuclear standards. An Office for Nuclear Regulation spokesperson noted their enabling approach to supporting such innovations, highlighting the importance of meeting stringent safety and design criteria.
Adding to the innovations, Marr Contracting has redeployed the world’s largest tower cranes on-site, enhancing the speed and efficiency of heavy lifting tasks. The utilisation of a single M2480D heavy lift luffing crane simplifies operations, reducing site congestion and increasing productivity. By installing this crane centrally within the Unit 2 Turbine Hall, heavy trusses up to 122 tonnes can be managed with precision and less disruption to surrounding activities.
David Wylie, Hinkley Point C’s project manager, highlighted that placing the M2480D crane inside the building reduces the complexity and interaction issues previously faced. This move allows other teams onsite to shift their focus from crane management to project productivity, learning from past experiences on Unit 1. This strategic approach is expected to maintain the cranes on-site until 2026, as they are integral to overcoming the intricate challenges posed by the site’s congestion and complexity.
These technological and procedural advancements signify a forward-thinking approach in nuclear construction, demonstrating Hinkley Point C’s commitment to innovation and efficiency.
