Nuclear News

The definition of a microreactor is ambiguous. But whether your upper cutoff is 10 MW or 20 MW, the Microreactor Applications Research Validation and Evaluation (MARVEL) reactor that the Department of Energy plans to build is, at 100 kW, on the tiny side of micro.

The Nuclear Regulatory Commission has sent to Congress its annual report on abnormal occurrences involving the medical and industrial uses of radioactive material. An abnormal occurrence is defined by law as an unscheduled incident or event that the NRC determines to be significant from the standpoint of public health or safety. The NRC sets specific criteria, most recently updated in October 2017, for determining which events qualify.

The American Nuclear Society has adapted to the increased digital world during COVID-19. An example of this new flexibility is ANS’s expanded online programming, which presented 28 webinars in 2020, some of which were available only to ANS members. This year during the first quarter, ANS has produced 16 programs on a range of topics, such as the review of the Fukushima accident, the Nuclear Non-Proliferation Treaty at 50 years, and the Spotlight series on the Department of Energy’s national laboratories. The webinars have been well attended and have sparked engaging discussion while most of the world was semi-quarantined.

The Biden administration’s fiscal year 2022 budget sent to Congress last week would, according to the Department of Energy, move the United States toward net-zero carbon emissions by 2050. The FY 2022 budget request includes $1.85 billion for the DOE’s Office of Nuclear Energy.

“President Biden’s budget request puts America in the driver's seat as we transition toward a 100 percent clean energy economy,” said secretary of energy Jennifer Granholm on May 28. “These investments will ensure the U.S. is the global leader in research, development, and deployment of critical energy technologies to combat the climate crisis, create good-paying union jobs, and strengthen our communities in all pockets of America.”

TerraPower has a design for a sodium-cooled fast reactor and federal cost-shared demonstration funding from the Department of Energy. Its partner, PacifiCorp, has four operating coal-fired power plants in the state of Wyoming. On June 2, together with Wyoming Gov. Mark Gordon and others, the companies announced plans to site a Natrium reactor demonstration project at a retiring coal plant in Wyoming, with a specific site to be announced by the end of 2021.

As governments around the world cooperate on the ITER tokamak and, in parallel, race each other and private companies to develop commercial fusion power concepts, it seems that “game-changing” developments are proclaimed almost weekly. Recently, the United Kingdom and China announced new fusion program results.

U.S. energy secretary Jennifer Granholm and French minister for the ecological transition Barbara Pompili issued a joint statement on May 28 in which they pledged to work together to meet shared climate goals.

“France and the United States share common goals and common resolve in fighting climate change and working toward reaching the ambitious target set forth by the Paris agreement,” the statement read. “We are united in a common ambition on both sides of the Atlantic: achieving net-zero carbon emissions by 2050. Reaching this common objective will require leveraging all currently existing emission-free technologies available to us while simultaneously intensifying research, development, and deployment across a suite of zero-emissions energy sources and systems. Ensuring that these energy systems are efficient and reliable, integrating larger shares of renewables coupled with nuclear energy, which is a significant part of today’s electricity production in both our countries, will be crucial to accelerate energy transitions. Reaching this common objective will also require a wide variety of favorable financing conditions across the range of zero-emitting power sources and systems.”

The Department of Energy is providing up to $2 million in fiscal year 2022 to fund university and national laboratory studies into the use of novel, medically relevant isotopes for use in pre-clinical and clinical medical trials, the DOE’s Office of Science announced on June 1.

Unit 2 at Pakistan’s Karachi nuclear power plant officially began commercial operation in late May, gaining the distinction of being the first Hualong One reactor outside of China to do so, China National Nuclear Corporation announced last week. Construction of Karachi-2 began in August 2015, and connection to the grid was accomplished in March of this year.

Three United Kingdom organizations—the Nuclear Industry Association, RenewableUK (formerly the British Wind Energy Association), and Solar Energy UK—are calling for urgent action to build new nuclear, wind, and solar capacity and for a binding target of 100 percent grid decarbonization by 2035.

The United Kingdom was the first of the world’s major economies to embrace a legal obligation to achieve net-zero carbon emissions by 2050.

Capacity factor is a measure of reliability, and reliability delivers results. The U.S. nuclear power fleet produced about 789.9 TWh of clean electricity in 2020 and ended the year with 94 operating reactors. According to Energy Information Administration data, that’s about 37 percent more electricity than the 576.9 TWh produced in 1990 by a much larger fleet of 112 reactors.

Nuclear News has tracked and analyzed the capacity factors of the U.S. fleet since the early 1980s, before concerted industry efforts yielded unforeseen performance improvements. High nuclear capacity factors are now less an achievement than an expectation. So much so, in fact, that advanced reactors in development today are assumed to be capable of achieving capacity factors above 90 or even 95 percent.

The U.S. fleet has maintained a median capacity factor near 90 percent for 20 years (see Fig. 1), and the median design electrical rating (DER) net capacity factor for 2018–2020, at 91.33, does not disappoint—unless by showing virtually no change relative to the median of 91.34 recorded in 2015–2017. However, this lack of meaningful difference only underscores the consistent reliability of the U.S. fleet.

Operators at the Advanced Test Reactor at Idaho National Laboratory have begun a nine-month outage to perform a core internals changeout. When the ATR is restarted in early 2022, the top head closure plate of the pressurized water test reactor will have new access points that could permit the irradiation of more fuel and material samples in the reactor’s high-flux neutron conditions.

The Canadian Nuclear Safety Commission (CNSC) has completed phase one of its pre-licensing vendor design review (VDR) for Moltex Energy’s 300-MW Stable Salt Reactor–Wasteburner (SSR-W)—a molten salt reactor that uses nuclear waste as fuel. CNSC entered into an agreement with Moltex in November 2017 to conduct the initial phase of the review.

After declaring its intention earlier this year to invest in nuclear technologies in Poland, Westinghouse Electric Company on May 24 announced the establishment of a “world-class” global shared service center in Kraków.

The only constant, as the saying goes, is change. Since adopting the American Nuclear Society Change Plan 2020 at the ANS Winter Meeting in 2019, the Society has been in a state of seemingly constant change. Many important improvements have been implemented under the Change Plan—including to this magazine and our news site, ans.org/news—with an eye toward making ANS a more modern and adaptable organization. Some changes also have better enabled ANS to quickly respond to events that were out of our control and forced us to take on new endeavors (thanks, COVID‑19)—a prime example being the 2020 ANS Virtual Annual Meeting and subsequent virtual meetings that followed.

Portland, Ore.–based NuScale Power has announced the signing of a memorandum of understanding with the Grant County Public Utility District (Grant PUD) to evaluate the deployment of NuScale’s advanced nuclear technology in central Washington state.

The Advanced Test Reactor (ATR) at Idaho National Laboratory is getting an overhaul that will keep it off line for nine months. When the ATR is restarted in early 2022, the one-of-a-kind pressurized water test reactor—which is operated at low pressures and temperatures as a neutron source—will be ready for another decade or more of service, with the potential for more experimental capacity in years to come.

The UK SMR consortium last week revealed the latest design and power upgrade—from 440 MW to 470 MW—for its proposed small modular reactor. According to the consortium’s lead company, Rolls-Royce, the “refreshed” design features a faceted roof, an earth embankment surrounding the reactor to integrate with the landscape, and a more compact building footprint.

Biden

Moon

The United States and South Korea have agreed to “develop cooperation in overseas nuclear markets, including joint participation in nuclear power plant projects, while ensuring the highest standards of international nuclear safety, security, and nonproliferation are maintained,” according to a statement from the White House on last week’s Washington meeting between President Joe Biden and South Korean President Moon Jae-in.

As part of that agreement, South Korea will adopt a common policy with the United States requiring recipient countries to have a safeguards agreement “Additional Protocol” in place as a condition of doing nuclear-related business. (The Additional Protocol is an expanded set of requirements for information and access to assist the International Atomic Energy Agency in its work to confirm that states are using nuclear material solely for peaceful purposes.)

The International Atomic Energy Agency has created a new program, NUclear TEChnology for Controlling Plastic Pollution (NUTEC Plastics), to address the global environmental impact of plastic pollution in oceans. It uses nuclear technology to monitor pollution and also to decrease the volume of plastic waste by using irradiation to complement traditional plastic recycling methods.