Power & Operations

The Nuclear Regulatory Commission last Friday announced the publication of its ninth report to the Convention on Nuclear Safety, describing the federal government’s actions under the convention to achieve and maintain safety for the nation’s nuclear power reactor fleet.

An International Atomic Energy Agency treaty, the Convention on Nuclear Safety was adopted in 1994 and entered into force in 1996. In 1999, it was ratified by the U.S. Senate.

The aim of the convention, according to the IAEA, is to “commit contracting parties operating land-based civil nuclear power plants to maintain a high level of safety by establishing fundamental safety principles to which states would subscribe.” Signatories are required to submit reports for peer review at meetings held every three years.

Who better to talk with about the licensing of nuclear facilities and materials than Christopher T. Hanson, the chairman of the five-member Nuclear Regulatory Commission? Hanson is the principal executive officer of and official spokesman for the NRC. As a collegial body, the Commission formulates policies, develops regulations governing nuclear reactor and nuclear material safety, issues orders to licensees, and adjudicates legal matters.

At this writing, the situation at Ukraine’s Zaporizhzhia nuclear power plant is as fraught with tension as ever, despite an International Atomic Energy Agency support and assistance mission to the site last week led by director general Rafael Mariano Grossi.

Just one week after entering into an exclusive agreement with a Dutch nuclear development company to deploy small modular reactors in the Netherlands, U.K.-based Rolls-Royce SMR has announced the signing of a memorandum of understanding with Škoda JS to explore “areas of collaboration” for SMR deployment in both the Czech Republic and elsewhere in Central Europe.

Southern Nuclear, operator of the two-unit Hatch nuclear plant, announced yesterday that it will seek subsequent license renewals (SLR) for both reactors.

Bowing at last to the unflagging efforts of nuclear advocates over the past few years—as well as to more recent pressure from a former nuclear opponent, Gov. Gavin Newsom—the California legislature late last night approved S.B. 846, a measure that provides the option of extending operations at the Diablo Canyon nuclear power plant for five years beyond its scheduled 2025 closure date.

Pacific Gas and Electric, Diablo Canyon’s owner and operator, had agreed in June 2016 to an early shuttering of the facility, following discussions with organized labor and environmental organizations. PG&E’s application to close the plant was approved by the California Public Utilities Commission in January 2018.

The bill passed easily through both legislative chambers: 67–3 in the General Assembly and 31–1 in the Senate.

Unit 2 at Mexico’s Laguna Verde nuclear plant has been given the go-ahead to operate into the 2050s, plant owner and operator Comisión Federal de Electricidad (CFE) announced last week.

Mexico’s secretary of energy, Norma Rocío Nahle García, approved a 30-year extension to the unit’s operating license on August 25, following a review by the country’s National Commission for Nuclear Safety and Safeguards. The reactor, one of two at the plant, is now authorized to run until April 10, 2055.

The National Association of Regulatory Utility Commissioners (NARUC) has published Nuclear Energy as a Keystone Clean Energy Resource, a white paper that examines the role of nuclear power in providing carbon-free energy in the United States. The 57-page paper, prepared by Energy Ventures Analysis, includes a review of considerations for regulators to boost nuclear power’s contribution to the decarbonization energy transition.

A key point made in the paper is that reaching ambitious state and national decarbonization goals will require expansion of the nuclear energy resource base. Despite this, a number of barriers stand in the way of nuclear fleet expansion. Moreover, existing nuclear power plants must continue to deal with challenges, such as those from economic pressures, planned reactor retirements, regulatory issues, and competition with other energy industries.

The deadline for first-round applications to the Department of Energy’s Civil Nuclear Credit (CNC) Program is September 6. While the program’s goal has never shifted from providing support to nuclear power plants facing closure for economic reasons so that they can continue generating clean power, the deadline and the first-round eligibility criteria have changed. The program was established by the Bipartisan Infrastructure Law with a sizable, yet finite, fund of $6 billion. Those applying in the first round will get the first—and possibly the best—crack at a share of the funds.

A bill to extend operations at California’s Diablo Canyon nuclear plant beyond 2025 debuted last evening in the California legislature. Lawmakers have until Wednesday—the end of the current legislative session—to vote on the measure.

Coauthored by State Sen. Bill Dodd (D., Napa) and Assemblymember Jordan Cunningham (R., San Luis Obispo), Senate Bill 846 includes a $1.4 billion forgivable loan to Pacific Gas and Electric (PG&E), the plant’s owner and operator, matching the amount in the August 12 proposal from Calif. Gov. Gavin Newsom. Instead of Newsom’s proposed option for a 10-year life extension for the facility, however, SB 846 would keep the plant running for an additional five years only.

Representatives of Ultra Safe Nuclear Corporation (USNC) of Seattle, Wash., and Hyundai Engineering of Seoul, South Korea, traveled last week between USNC project sites in Oak Ridge, Tenn., and Ontario, Canada, to sign two agreements extending their collaboration on the deployment of USNC’s high-temperature, gas-cooled Micro Modular Reactor (MMR). The agreements expand on a business cooperation agreement signed in January 2022 and an engineering agreement signed in June, and follow the closure earlier this month of a previously announced $30 million equity investment after its review by the U.S. Treasury Department’s Committee on Foreign Investment in the United States.

The American Society of Mechanical Engineers/American Nuclear Society Joint Committee on Nuclear Risk Management (JCNRM) has issued a new edition of its flagship standard, ANSI/ASME/ANS RA-­S-­1.1-­2022, Standard for Level 1/Large Early Release Frequency Probabilistic Risk Assessment for Nuclear Power Plant Applications. This standard was approved by the JCNRM, the ANS Standards Board, and the ASME Board on Nuclear Codes and Standards before being approved on May 11 by the American National Standards Institute (ANSI), earning the title of an American National Standard. With most of the text stable for the past year, the production process was started early, allowing the 400-­page standard to be published on May 31, 2022.

The United Kingdom’s Rolls-Royce SMR has signed an exclusive agreement with ULC-Energy—a Dutch nuclear development company established in 2021—to deploy small modular reactor stations in the Netherlands. (ULC stands for Ultra Low Carbon.)

NuScale Power yesterday announced the signing of a memorandum of understanding with Estonia’s Fermi Energia, a company focused on small modular reactor development to address the Baltic state’s climate and energy security goals.

Under the MOU, Fermi Energia will evaluate the Portland, Ore. – based firm’s small modular reactor design for deployment in Estonia. (There are no nuclear power facilities in Estonia or in the other Baltic countries, Latvia and Lithuania.)

China’s Taishan-1, which was shut down last summer due to damaged fuel rods, resumed operations on August 15.

The plant briefly made headlines last summer—as much for the damage inside the reactor as for the media fallout. In June 2020, plant operators found damage to the cladding on about five of the 60,000 fuel rods in Taishan-1, one of the plant’s two 1,660-MW EPRs. What happened next seemed like a bad game of “telephone.”

X-energy has been having a good year. Not only did Dow announce plans to invest in the company’s high-temperature gas reactor (HTGR) technology and deploy an Xe-100 reactor at a U.S. Gulf Coast facility for power and process heat by 2030, in parallel with the Xe-100 demo planned for Washington state with support from the Advanced Reactor Demonstration Program (ARDP), but X-energy’s fuel subsidiary, TRISO-X, has applied for a fuel facility license and aims to have a commercial fuel plant operating in 2025, and Canadian provinces are signaling their interest in the technology. And while news of Dow’s investment broke with well-deserved fanfare, the company’s serious interest in HTGRs—and federal support for HTGR development—goes way back.

Akkuyu Nuclear, the Ankara-based Rosatom subsidiary established to manage Turkey’s Akkuyu nuclear plant project, has announced the successful mounting of the Unit 1 polar crane. The operation was carried out using a Liebherr LR 13000 crane and took approximately four hours, according to Akkuyu Nuclear.

Also referred to as a circular bridge crane, the polar crane operates on a circular runway located near the spring line of the containment building. It is used for a wide range of loading and lifting tasks within containment, including reactor-head removal/replacement and fuel loading/unloading.

Ontario Power Generation has announced that refurbishment of Unit 3 at its Darlington nuclear plant is progressing ahead of schedule, with an expected return to service by late 2023, rather than early 2024.

The latest news on Ukraine’s Zaporizhzhia nuclear power plant—under occupation by the Russian military since early March—sparks some hope, but also more anxiety.

The good: This morning, Russia requested that the United Nations Security Council hold a meeting tomorrow on the situation at the six-unit pressurized water reactor plant, according to RIA Novosti, a Russian state-owned news agency. The RIA report cited a post via the Telegram messaging app from Dmitry Polyansky, Russia’s first deputy minister at the UN. In the post, Polyansky said the meeting is scheduled for “22:00 Moscow time on August 23.”

In the ongoing quest to mitigate the effects of climate change, new technology can create new solutions. Even today, however, coal is still a main source of power around the globe, often out of necessity. Many coal-burning plants have already been converted for gas or biomass, but these measures alone are not nearly enough to meet net-zero carbon goals. There is a better solution, however: repowering coal plants with nuclear technology—specifically, Generation IV reactors.