Another calendar year has passed. Before heading too far into 2023, let’s look back at what happened in 2022 for the American Nuclear Society and the nuclear community. In today's post that follows, we have compiled from Nuclear News and Nuclear Newswire what we feel are the top nuclear news stories from July through September 2022.

Stay tuned this week for the top stories from the rest of the past year.

But first:

• Click here for some of ANS’s activities for 2022
• Click here for the top nuclear news stories from January through March 2022
• Click here for the top nuclear news stories from April through June 2022

Hunt

U.K. chancellor of the exchequer Jeremy Hunt last week assuaged any concerns that Britain’s nuclear energy advocates might have been harboring regarding the new government’s support for the proposed Sizewell C plant. (The United Kingdom is on its third prime minister since July, when Boris Johnson’s government granted EDF Energy its long-awaited development consent order for the new nuclear build project.)

What he said: In his November 17 Autumn Statement, while noting the United Kingdom’s status as “a global leader in renewable energy,” Hunt added, “We need to go further, with a major acceleration of home-grown technologies like offshore wind, carbon capture, and storage, and, above all, nuclear. This will deliver new jobs, industries, and export opportunities and secure the clean, affordable energy we need to power our future economy and reach net zero."

By all accounts the most productive nuclear power plant in British history, Somerset’s Hinkley Point B station closed for good on August 1, with the shutdown of its B1 unit, a 485-MWe advanced gas-cooled reactor. (The plant’s B2 unit, a 480-MWe AGR, was shuttered early last month.)

The station employed around 500 staff and 250 contractors and contributed approximately £40 million (about $48.7 million) per year to the Somerset economy, according to EDF Energy, owner and operator of the United Kingdom’s power reactor fleet.

The U.K. government has granted a development consent order (DCO) for EDF Energy’s proposed Sizewell C plant near Leiston in Suffolk, moving the new nuclear build project closer to a reality.

Nuclear New Build (NBB) Generation Company, an EDF Energy subsidiary, submitted the DCO application to the government’s Planning Inspectorate in May 2020, setting out the range of measures the project would implement to mitigate construction effects and maximize community benefits. The Planning Inspectorate accepted the application in June 2020 and completed its examination in October 2021. Recommendations were made to the secretary of state for business, energy, and industrial strategy this February.

The prospects for new nuclear energy construction in the Western world is the subject of a recent The Economist article, “Energy security gives climate-friendly nuclear-power plants a new appeal.” The article also explores the difficulties that EDF Energy has been experiencing in constructing its EPRs in Europe.

The United Kingdom’s energy minister, Greg Hands, recently presided over the opening of one of three new training centers in England aimed at supporting EDF Energy’s Hinkley Point C nuclear build project in Somerset. The centers, according to EDF, will provide locals with the skills necessary to join the ranks of about 4,000 additional workers expected to be needed for the next phase of the power station’s construction. Hands unveiled the Welding Centre of Excellence, located on the Bridgwater & Taunton College campus in Bridgwater.

The U.K. government has released a new energy strategy aimed at boosting Britain’s energy independence, stabilizing its soaring energy prices, and accelerating the deployment of new nuclear, wind, solar, and hydrogen to mitigate climate change.

At the same time, the 38-page document, British Energy Security Strategy, calls for near-term support for domestic oil and gas, stating, “Net zero is a smooth transition, not an immediate extinction, for oil and gas.” (The United Kingdom in 2019 became the first of the world’s major economies to embrace a legal obligation to achieve net-zero carbon emissions by 2050.)

Following through with this strategy, the government says, could result in low-carbon sources generating up to 95 percent of British electricity by 2030.

The United Kingdom’s Office for Nuclear Regulation (ONR) has granted permission for the start of bulk mechanical, electrical, and HVAC component installation work at the Hinkley Point C site in Somerset, England, where two 1,630-MWe EPRs are under construction. Thus far, most of the activity at Hinkley Point C has been in the field of civil construction.

This new phase, according to ONR, will require a workforce of up to 4,000 during peak times, including welders, pipe fitters, and electricians. The work is to be accomplished over a three-year period, with NNB Genco—the EDF Energy subsidiary set up in 2009 to build and operate Hinkley Point C—teaming up with four suppliers: Balfour Beatty Bailey, Doosan, Cavendish, and Altrad.

Unit B1 at Scotland’s two-unit Hunterston B nuclear power plant was taken off line for good on November 26 after nearly 46 years of operation. A 490-MWe advanced gas-cooled reactor, the unit entered commercial operation in June 1976. Its companion AGR, Unit B2, which entered operation in March 1977, is scheduled for retirement in January.

A recent study of life cycle carbon emissions at the United Kingdom’s Hinkley Point C nuclear plant finds that the facility, now under construction in Somerset, England, is likely to produce less CO₂ over its lifetime than either solar or wind power.

According to the 70-page analysis—prepared by environmental consultancy Ricardo Energy & Environment for NNB Generation Company HPC Limited, the holding company for the Hinkley Point project—lifetime emissions from Hinkley Point C are likely to be about 5.5g CO₂e per kWh. That amount also holds for the proposed Sizewell C plant, the study concludes. (The two 1,630-MWe EPRs at Hinkley Point C are currently scheduled to begin commercial operation in 2026 and 2027.)

The outlook for new nuclear construction in Wales may have taken a bleak turn, but that hasn’t stopped the Welsh government from seeking other opportunities for its nuclear industry. On February 5, the government announced the signing of a memorandum of understanding with the Sizewell C Consortium, an organization of nearly 200 businesses and trade unions from the United Kingdom's nuclear supply chain focused on ensuring that the proposed Sizewell C nuclear power station in Suffolk, England, actually gets built.

The consortium includes the firms Atkins, Balfour Beatty Bailey, Cavendish Nuclear, Doosan Babcock, EDF, Laing O’Rourke, and Mott MacDonald, as well as the unions GMB, Unite, and Prospect.

A big deal: According to the announcement, in the event that the Sizewell C project is approved, the MOU could potentially see an investment of up to £900 million (about $1.2 billion) in the Welsh nuclear supply chain and up to 4,700 jobs supported across Wales. The signatories also view the agreement as a way to help retain the Welsh nuclear skills base.

Perspex screens and reduced seating capacity in the Hinkley Point canteens help protect the workforce during breaks, EDF Energy said. Photo: EDF Energy

The unfortunate effects of the COVID-19 pandemic on nuclear new-build projects haven’t stopped with Vogtle: EDF Energy this morning reported that the expected startup date for Unit 1 at its Hinkley Point C site is being pushed from late 2025 to June 2026.

In addition, the project’s completion costs are now estimated to be in the range of £22 billion to £23 billion (about $30.2 billion to $31.5 billion), some £500 million (about $686 million) more than the 2019 estimate, EDF said, adding the caveat that these revisions assume an ability to begin a return to normal site conditions by the second quarter of 2021.

Hinkley Point B, in Somerset, England. Photo: EDF Energy

EDF Energy has made a “proactive decision” to move Britain’s Hinkley Point B power station into its defueling phase no later than July 15, 2022—some eight months earlier than previously scheduled—the company announced on November 19.

The two-unit plant, located in Somerset, England, began generating electricity in 1976 and has since produced more than 300 TWh of power, enough to meet the electricity requirements of every home in the United Kingdom for three years, according to EDF.

Artist’s rendering of the Sizewell site, with Sizewell C at right. Image: EDF Energy

A BBC News story from late last week states that the U.K. government “is close to giving the green light” to EDF Energy’s proposed Sizewell C nuclear new build project in Suffolk, adding that details surrounding the project’s financing “are still being hammered out.”

The Sizewell C station, consisting of twin European pressurized reactors (EPRs), would be built next to Sizewell B, a 1,198-MWe pressurized water reactor that began operation in 1995. (The Sizewell site also houses Sizewell A, a 290-MWe Magnox gas-cooled reactor, but that unit was permanently shuttered in 2006.) Sizewell C would be a near copy of the two-unit Hinkley Point C station, currently under construction in Somerset.

The Nuclear Industry Association (NIA), the trade group for the United Kingdom’s civil nuclear industry, unveiled a new report yesterday that sets out a framework for cutting the cost of building new nuclear power plants in Britain.

The 27-page report, Nuclear Sector Deal: Nuclear New Build Cost Reduction, is available online.

The United Kingdom’s Office for Nuclear Regulation (ONR) issued an improvement notice to EDF Energy Nuclear Generation Ltd. earlier this month for a problem involving the pressure systems safety regulations (PSSR) at the two-unit Heysham 1 nuclear power station. The notice was served following an inspection of the Unit 1 pressure vessel at the Lancashire site.

Citing reports that China has recently threatened to pull its support for new nuclear build in the United Kingdom, U.S. Secretary of State Mike Pompeo on June 9 offered assistance from the United States and vehement criticism of Beijing.