The United Kingdom’s nuclear renaissance

The United Kingdom’s nuclear industry is expanding, with the U.K. government committed to supporting the build of more civil nuclear power plants (deployments up to 24 GW by 2050)¹ while also undertaking large-scale decommissioning work in parallel.² The defense sector is experiencing growth with the decommissioning, operation, and new build of submarines, plus managing the U.K.’s deterrent.³ Although the civil and defense programs are separate, they draw on the same group of skills and people.

The discovery of a small amount of uranium inside a package of scrap metal bars at Heathrow Airport in London has raised a number of puzzling questions that are being investigated by Scotland Yard, headquarters of the London Metropolitan Police (the Met). Investigators said that the uranium, which was found by Border Force staff during routine screening at the airport on December 29, originated in Pakistan, though it arrived at Heathrow on a passenger flight from Oman and, according to a January 11 report in the Guardian, was bound for an Iranian-owned business with offices in the United Kingdom.

Small modular reactor developers Holtec International and GE Hitachi Nuclear Energy (GEH) are both looking to the United Kingdom as a prime location for deployment of their units—the SMR-160 and BWRX-300, respectively.

On December 19, Holtec Britain announced that it is poised to enter the United Kingdom’s generic design assessment (GDA) process for the SMR-160 early in 2023, enabling the start of construction of the first U.K. unit as soon as 2028. (The GDA, developed by the Office for Nuclear Regulation and the Environment Agency, gauges the safety, security, and environmental protection aspects of a nuclear plant design. Successfully completing the assessment culminates in a design acceptance confirmation from ONR and a statement of design acceptability from the Environment Agency.)

The Windscale Piles, circa 1956. (Photo: DOE)

After the Atomic Energy Act of 1946 ended collaboration between the United States and its World War II allies (specifically, the United Kingdom and Canada), the British government felt it necessary to go down its own path in developing nuclear technology. As a result, the Windscale Piles, in Seascale, Cumberland, England, were planned and built with the aim of producing plutonium for the U.K.’s defense purposes. Windscale Pile No. 1 became operational in 1950, and Windscale Pile No. 2 followed shortly after in 1951.

Early in the design process, the U.K. government came to realize that it did not have an adequately expansive piece of land that could provide a safety barrier in case of an issue at a water-cooled reactor. If the flow of water coolant were to be interrupted, an evacuation and exclusion zone could require a large land area that Britain simply did not have. The government, therefore, decided to construct both reactors with a natural draft air convection core cooling system. A massive cooling chimney at each reactor would soar nearly 400 feet into the air.

Craig Piercy
cpiercy@ans.org

The Cheshire countryside in late summer has a lot to offer an American visitor besides cool, insect-free air; bacon sandwiches; and warm ales. It also provides the perfect vantage point to consider the fundamental shifts in energy availability and security we have witnessed over the last 12 months.

Residential energy prices here in the United Kingdom have increased by roughly 80 percent over the last year, prompting the government to advise Britons to turn their water heaters off at night and boil their kettles with only as much water as needed to make their tea.

While I was here, outgoing British prime minister Boris Johnson visited the Sizewell site to announce a £700 million investment in Sizewell C, two 1,600-MW EPR reactors soon to be under construction. His remarks had the wistful, poignant tone of a leader facing the end of his tenure in office:

As citizens of the United Kingdom and others around the world mourn the death of Queen Elizabeth II, many have reflected on how the world has changed during the seven decades of the queen’s reign—the same decades that saw the rise of civilian nuclear power.

Calder Hall was already under construction at the Sellafield site in West Cumbria when Princess Elizabeth became queen in 1953. Queen Elizabeth traveled to the site in October 1956 and declared, in a televised ceremony, that “It is with pride that I now open Calder Hall, Britain’s first atomic power station.” Watch the fanfare in a historical clip uploaded to YouTube by Sellafield Ltd below.

The LongOps project will develop innovative robotic technologies. Photo: UKAEA

Britain and Japan have signed a research and technology deployment collaboration to help automate nuclear decommissioning and aspects of fusion energy production. According to the U.K. government, which announced the deal on January 20, the £12 million (about $16.5 million) U.K.–Japanese robotics project, called LongOps, will support the delivery of faster and safer decommissioning at the Fukushima Daiichi reactors in Japan and at Sellafield in the United Kingdom, using long-reach robotic arms.

The four-year collaboration on new robotics and automation techniques will also be applied to fusion energy research in the two countries.

Funded equally by U.K. Research and Innovation, the U.K.’s Nuclear Decommissioning Authority, and Japan’s Tokyo Electric Power Company, the LongOps project will be led by the U.K. Atomic Energy Authority’s (UKAEA) Remote Applications in Challenging Environments (RACE) facility.

A new research contract between the U.K. Space Agency and Rolls-Royce will see planetary scientists working together to explore nuclear power as an energy source for deep space missions in the decades to come. The effort is similar to one that the United States is undertaking through NASA.

"Space nuclear power and propulsion is a game-changing concept that could unlock future deep-space missions that take us to Mars and beyond," said Graham Turnock, chief executive of the U.K Space Agency, on January 12. "This study will help us understand the exciting potential of atomic-powered spacecraft, and whether this nascent technology could help us travel further and faster through space than ever before."

Along with the wider Trade and Cooperation Agreement it signed late last month with the European Union to address post-Brexit realities, the U.K. government concluded a stand-alone Nuclear Cooperation Agreement with the European Atomic Energy Community, better known as Euratom. The NCA went into effect January 1.

A 170-page energy white paper, Powering Our Net Zero Future, issued by the United Kingdom government on December 14 sets big goals for cleaning up the U.K.’s energy system. According to the U.K. government, the plan would create and support green energy jobs across England, Scotland, Wales and Northern Ireland and would keep electricity bills affordable as the U.K. transitions to net zero emissions by 2050.

The white paper notes that the U.K. will generate emission-free electricity by 2050 with a trajectory that will see "overwhelmingly decarbonized power in the 2030s. Low carbon electricity will be a key enabler of our transition to a net zero economy with demand expected to double due to transport and low carbon heat."

The white paper builds upon the U.K. prime minister’s 38-page Ten Point Plan for a Green Industrial Revolution, which was issued on November 18.

The United Kingdom’s Department for Business, Energy and Industrial Strategy has asked local governments to submit bids to host the Spherical Tokamak for Energy Production project, or STEP, according to an article published by Bloomberg on December 1.

The STEP plant will be developed by the U.K. Atomic Energy Authority, which says that construction could begin as soon as 2032, with operations by 2040, and “will prove that fusion is not a far-off dream.”

Nuclear reactors have evolved to achieve more than just electricity generation and should be part of the U.K.’s plan to reach net-zero emissions by 2050. Photo: Royal Society, authors provided

The United Kingdom needs to start rebuilding its capacity to generate nuclear power, according to an opinion article published Wednesday on The Conversation by two members of the U.K.-based Bangor University faculty.

Bill Lee, a professor of materials in extreme environments, and Michael Rushton, a senior lecturer in nuclear energy, argue that the plan by the Committee on Climate Change, which advises the U.K. government on the effort to reach net-zero emissions by 2050, is “strangely silent on nuclear power.”

“The world needs a mix of renewable power sources, including one that can carry on producing power when the others can’t—the sun doesn’t always shine and the wind doesn’t always blow,” British journalist Jonathan Gornall writes in an opinion piece posted Wednesday on the Asia Times website. Gornall argues that the residents of Suffolk County in the United Kingdom would be better served by the expansion of the Sizewell nuclear power plant than by leaving a wooded area untouched.

RWM’s new research office will study geological disposal of nuclear waste in the U.K.

Radioactive Waste Management (RWM), the U.K. government organization tasked with planning for a geological disposal facility (GDF) for radioactive waste in the United Kingdom, announced on August 4 that, in partnership with the University of Manchester and the University of Sheffield, it has established the Research Support Office (RSO) to “harness the U.K.’s vast array of research capabilities in geo-disposal science and technology.”

The new office is to provide RWM with independent research to help guide the organization in designing and building a U.K. deep geological facility for the permanent disposal of high- and intermediate-level waste.

A report published last week by Energy Systems Catapult, a U.K.-based clean energy nonprofit, concludes that adding double-digit gigawatts of new nuclear is a “low-regrets option” for the United Kingdom as it strives to achieve net-zero carbon emissions by 2050. (Legislation establishing the 2050 target date was signed in June of last year, making the United Kingdom the first of the world’s major economic powers to take that step.) The report also stresses, however, that costs for new nuclear must decrease significantly for the technology to meet its potential.

Fig. 1. Geographical spread of U.K. organizations engaged in the U.K. AFCP, including a number of the world leading U.K. universities. Image: NNL

Called “the first significant public investment in a generation,” the U.K. Advanced Fuel Cycle Program (AFCP) is driving innovation to underpin future nuclear deployment in the United Kingdom. Led jointly by the U.K. Department for Business, Energy and Industrial Strategy and the National Nuclear Laboratory (NNL), the program involves more than 40 U.K. organizations, including a number of world-­leading U.K. universities (Fig. 1), and is working with international organizations across more than 10 countries, leveraging U.K. investment into more than £100 million in international programs.

The global engineering company Jacobs, under a contract with Radioactive Waste Management Ltd. (RWM), will be studying the release of radioactivity from irradiated graphite taken from reactor core samples at the United Kingdom’s nuclear power plants. According to Jacobs, the research will support RWM, a subsidiary of the U.K. government’s Nuclear Decommissioning Authority, in its analysis of graphite behavior and the options for graphite waste management in the future.

Following a comprehensive and open national consultation, the United Kingdom’s Radioactive Waste Management (RWM) organization on February 18 published its approach to evaluating possible sites in England and Wales for a deep geological disposal facility. A wholly owned subsidiary of the U.K. government’s Nuclear Decommissioning Authority, RWM will be responsible for the siting, construction, operation, and eventual closure of a disposal facility for the United Kingdom’s high-­ and intermediate-­level radioactive waste.