Power & Operations

The International Atomic Energy Agency last week released its annual nuclear power status data, collected by the Power Reactor Information System (PRIS), the agency’s publicly available nuclear power database.

According to the IAEA’s data summary, nuclear power in 2020 played an important role as an adaptable and reliable supplier of electricity during the pandemic.

The Nuclear Regulatory Commission has launched a special inspection at the Vogtle new-build site to identify the errors that necessitated construction remediation work on Unit 3’s electrical cable raceway system.

Duke Energy has filed a subsequent license renewal (SLR) application with the Nuclear Regulatory Commission for the Oconee nuclear plant reactors, the Charlotte, N.C.–based utility announced on June 21.

The Nuclear Regulatory Commission recently released its Enforcement Program Annual Report for calendar year 2020, showing a total of 61 escalated enforcement actions taken last year against licensees, non-licensees, and individuals—an increase of 7 percent from CY 2019, but a number that remains below the five-year (2016–2020) average.

Exelon on June 16 filed with grid operator PJM Interconnection to deactivate the two Byron reactors in Illinois. The move came one day after the Illinois Senate adjourned without reaching an agreement on a comprehensive energy package that would have provided nearly $700 million to keep Byron’s reactors, as well as Exelon’s Dresden and Braidwood nuclear power plants, in operation. (In August of 2020, Exelon announced that it would close the economically challenged Byron and Dresden facilities in the fall of 2021 without some form of state aid to provide compensation for their clean power.) The state’s House of Representatives also adjourned earlier this week without taking up the bill.

Online monitoring (OLM) technology can be used in nuclear power plants as an analytical tool to measure sensor drift during plant operation and thereby identify the sensors whose calibration must be checked physically during an outage. The technology involves a procedure to (1) retrieve redundant sensor measurements from the process computer or through a separate data acquisition system, (2) calculate the average of these measurements and the deviation of each sensor from the average, and (3) identify any sensor that has deviated beyond its predetermined monitoring limit.

The 2021 ANS Annual Meeting brought together three leading chief executive officers from the nuclear industry on June 16 for a discussion centered on the future role of nuclear energy deployment and the challenges of portfolio management during a time of net-zero carbon goals.

The Illinois Senate adjourned on June 15 without calling a comprehensive energy regulatory reform package for a vote, Capitol News Illinois reported. State Sen. Bill Cunningham (D., Chicago) and Senate president Don Harmon (D., Oak Park) said afterward that they expect a vote to happen sometime this summer as negotiations continue.

The Nuclear Regulatory Commission has published notice in the Federal Register of a final rule amending the licensing, inspection, special projects, and annual fees to be charged to the agency’s applicants and licensees for fiscal year 2021. The rule goes into effect August 16.

Mary Lou Dunzik-Gougar

Nuclear energy is the cleanest, safest, densest, and most reliable energy source. The value proposition for nuclear energy is unparalleled. It is the only commercially proven, “dispatchable” clean energy technology that can be scaled up fast enough to meet the demand for electricity in a decarbonizing scenario. It is the answer for governments and nongovernmental organizations worldwide that are clamoring for a reduction in human-generated CO₂ emissions. Humans flourish when they have access to plentiful, safe, and reliable energy. Nuclear excels at all of these.

Craig Piercy

“Prejudice” is a word we hear often these days. The dictionary defines it as a “preconceived opinion that is not based on reason or actual experience.” In our current public discourse on race and gender, prejudice hangs in the air like a persistent fog that obscures the path to real progress. But prejudice is also a much broader societal phenomenon—our caveman brains are constantly looking for quick shortcuts (which psychologists call heuristics) to make sense of the world, which often leads us to conclusions that are outdated, unfair, or just plain wrong.

In her career as a chemist, Meredith Angwin headed projects that lowered pollution and increased reliability on the electric grid. Her work included pollution control for nitrogen oxides in gas-­fired combustion turbines and corrosion control in geothermal and nuclear systems.

Angwin, an ANS member, was one of the first women to be a project manager at the Electric Power Research Institute, leading projects in nuclear energy and renewables.

In the past decade, Angwin began to study and take part in grid oversight and governance. For four years, she served on the Coordinating Committee for the Consumer Liaison Group associated with ISO New England, her local grid operator. It was during this time that she realized what a maze of confusion surrounded grid rules and grid management.

Unit 6 at the Tianwan nuclear plant has entered commercial operation, China National Nuclear Corporation announced last week. The domestically designed ACPR-1000 pressurized water reactor becomes CNNC’s 24th unit to enter service, raising the company’s installed generating capacity to 22.5 GWe (gross).

Georgia Power recently pushed back its projected commercial operation date for Vogtle-3 from December of this year to January 2022, but now some engineering and financial experts are saying that this revised date is too optimistic.

Public discourse on energy and climate increasingly includes nuclear energy, but how has that affected public opinion? The answer: a lot. A national public opinion survey conducted in May found that support for nuclear energy has rebounded, and politics, in part, may offer a window into why. For example, now Biden and Trump voters support nuclear energy about equally. Trump voters care more about affordable and reliable electricity. Biden voters care more about climate change, and their support is driven by perception of need. Perception of need is boosted by climate change, recent energy supply problems, and Democratic leadership endorsements. The importance of Democratic leadership endorsements is shown in the Obama bump in 2010 and the Biden bump in 2021. In both cases, the increase in overall support for nuclear is largely attributable to increased support among Democrats.

The survey, with 1,000 nationally representative U.S. adults, has a margin of error of plus or minus 3 percentage points and was conducted by Bisconti Research Inc. with Quest Global Research Mindshare Online Panel. The report includes trend data going back 38 years.

EDF Energy, owner and operator of the United Kingdom’s nuclear reactor fleet, yesterday announced its decision to move the Dungeness B nuclear plant into its defueling phase “with immediate effect,” rather than proceed with a restart later this year. The company had previously stated that it intended to operate the facility, located in southeastern England, until at least 2028.

Three Illinois nuclear power plants—Byron, Dresden, and Quad Cities—did not clear in last week’s long-delayed PJM Interconnection capacity auction, Exelon Generation reported in a filing with the Securities and Exchange Commission.

The news is likely to further pressure the Illinois General Assembly to pass a comprehensive energy package—one with subsidies for the state’s financially ailing nuclear plants—before Exelon moves forward with its plan, announced last August, to prematurely retire Byron and Dresden.

As the U.S. nuclear industry moves into plant life extension and subsequent license renewals, the modernization of safety instrumentation and control (I&C) systems holds significant potential to transform plant operations. Automated system diagnostics, equipment health monitoring, and performance indications reduce the need for manual surveillance activities and enable condition-based maintenance, resulting in improved system reliability and reduced maintenance costs. Despite these benefits, adoption of digital I&C systems for safety-related applications across the domestic nuclear fleet has been slow. U.S. nuclear power plants that do choose to embrace the transition from analog to digital are in good company; international plants have successfully implemented digital safety systems for more than a decade. Furthermore, digital safety systems are also the first choice of the growing small modular reactor (SMR) and advanced reactor (AR) communities.

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.

Harmon

An energy proposal in Illinois that would keep the state’s nuclear power plants on line while providing incentives for wind and solar generation is likely to be approved by Illinois lawmakers and signed into law by the governor, according to a news report yesterday from Capitol News Illinois.

Senate president Don Harmon (D., Oak Park) noted on June 1 that a deal had been reached between Gov. J. B. Pritzker and Exelon, the parent company of Commonwealth Edison and the owner of six nuclear power plants in Illinois.

Job saver: Approving the energy deal “would save jobs, which has been our goal all along,” Harmon said. “That’s why we support the governor in these talks. We also stand with the governor on decarbonization targets that need to be in a final deal.”