World experts join UKAEA fusion energy mission

Close out Vessel Photographs – May 2011

World-leading engineering and science experts have joined the UK Atomic Energy Authority (UKAEA) as the government ramps up on its mission to lead the delivery of sustainable fusion energy.

UKAEA has signed two multimillion-pound framework agreements this week to aid the development of safe, efficient, and low-carbon fusion energy. Fusion has the potential to be a critical component in the global effort to tackle climate change.

Fusion is the process that takes place in the heart of stars and provides the power that drives the universe. When light nuclei fuse to form a heavier nucleus, they release bursts of energy. This is the opposite of nuclear fission – the reaction that is used in nuclear power stations today – in which energy is released when a nucleus splits apart to form smaller nuclei.
Producing energy from fusion on earth is a massive challenge, which has yet to be achieved at scale. A combination of hydrogen gases – deuterium and tritium – must be heated to very high temperatures (more than 100 million degrees Celsius). The gas becomes a plasma and the nuclei combine to form a helium nucleus and a neutron, with a tiny fraction of the mass converted into ‘fusion’ energy. A plasma with millions of these reactions every second can provide a huge amount of energy from very small amounts of fuel.
One way to control the intensely hot plasma is to use powerful magnets. The most advanced device for this is the ‘tokamak’, a Russian word for a ring-shaped magnetic chamber. In the UK, The Culham Centre for Fusion Energy, based at Abingdon, wants to develop fusion reactors using the tokamak concept.

A £4 million, four-year Engineering Embedded Resource Framework agreement with seven companies: Assystem, in France, engineering companies Atkins, IDOM, Morsons, NUVIA, EASL and Bristol-based Norton Straw Consultants will cover fusion research, powerplant design, robotics, modelling, materials, and other specialist technology areas.

The second framework, a £3.5m Spherical Tokamak for Energy Production (STEP) Manufacturing Support Services agreement, will push forward UKAEA’s plans to deliver the first prototype fusion energy plant in the UK.

Five lead companies – Ansaldo, Doosan Babcock, Frazer Nash, Nuclear AMRC and Rolls-Royce – will be supported on this programme by more than 25 collaborators from industry, research and technical organisations, The High Value Manufacturing Catapult (a group of manufacturing research centres in the United Kingdom), and academia until March 2024.

The frameworks will allow companies to embed their own specialists in project roles or add experience and expertise to UKAEA research into the development of fusion energy.

Paula Barham, UKAEA Head of Procurement, said: “Signing these two major framework agreements in the run up to Christmas is a big boost for UKAEA and our partners. Joining forces with such world-class organisations brings exciting opportunities for us to team-up with a wide range of experts, with this type of collaboration vital to UKAEA succeeding and positioning the UK as a leader in sustainable fusion energy.”

Gary Stables, Engineering Contract Project Manager at UKAEA, added: “This is another example of how UKAEA works closely with its industrial partners to access resources as well as help develop the UK manufacturing supply chain in the push towards our goal of delivering fusion energy, which has huge potential as a low carbon energy source.”

Fusion, the process that powers the sun and stars, promises a near-limitless clean electricity source for the long term. Fusion power creates nearly four million times more energy for every kilogram of fuel than burning coal, oil or gas.

STEP (Spherical Tokamak for Energy Production) is a UKAEA programme that will demonstrate the ability to generate net electricity from fusion through its prototype power plant. It will also determine how the plant will be maintained through its operational life, and demonstrate its potential to recycle its fuel. Five sites have been shortlisted across the UK, with a decision on the final location to be made by the Secretary of State for Business, Energy and Industrial Strategy around the end of 2022.