As nuclear power plants in the United States and around the world go through license renewals to operate for up to 60 and 80 years and beyond, aging management of electrical cables takes center stage. Each nuclear power plant unit has thousands of miles of cables, many of which are critical to plant safety and reliability. The most important cables—those in safety systems or safety-related applications—are qualified according to industry standards and guidance documents for nuclear applications. These qualification methods use accelerated aging to simulate cable degradation under natural aging conditions and then subject the cable to a design-basis event simulation to establish the cable’s “qualified life.” This approach has worked well for the length of the initial plant license, but now, many cables are approaching or already are past their 40-year qualified lifespan. With license renewals allowing plants to operate beyond their original design life, the industry has undertaken a variety of research endeavors to help assess the condition of cables as they age and develop in situ testing techniques to verify that cables can continue to operate safely and reliably. For example, in 2022, we completed a multiyear project to develop aging acceptance criteria for a wide variety of condition monitoring techniques that can objectively assess the aged condition of cables while they remain installed in nuclear plants.

Crapo

Bipartisan legislation has been reintroduced in Congress to strengthen the Radiation Exposure Compensation Act (RECA), improving compensation for people who were exposed to radiation as a result of working in uranium mines or living near sites of nuclear weapons testing during the Cold War. The legislation was introduced recently in the Senate by Sens. Mike Crapo (R., Idaho) and Ben Ray Luján (D., N.M.) and in the House by Rep. Teresa Leger Fernández (D., N.M.) and Del. James Moylan (R., Guam).

Follow-up bill: Originally introduced by Crapo in 2021, S. 2798 was put forward again to follow up on the success that Crapo, Luján, and Fernández had last year in extending the RECA program into 2024. The reintroduced bill, which added Moylan as a sponsor, would extend the program further to cover more communities with former uranium workers and “downwinders” (people who were exposed to radiation because they lived downwind from weapons testing sites). While the original legislation covered people in parts of Utah, Nevada, and Arizona, the bill will now also cover those who lived in Idaho, Colorado, New Mexico, and Guam.

A truck hauls excavated salt away from the WIPP utility shaft project, marked by a large aboveground steel headframe. The shaft has reached the depth necessary to allow horizontal tunneling work to begin, which will connect the shaft to the WIPP underground repository complex. (Photo: DOE)

The Department of Energy’s Carlsbad Field Office announced that it has made a significant step toward increasing airflow to the Waste Isolation Pilot Plant (WIPP) underground with the excavation of a new utility shaft. According to the office, crews working on the shaft recently reached an underground depth, known as station depth, that will allow horizontal tunneling work to begin on connecting the shaft to the WIPP repository complex.

Located in southeastern New Mexico, the repository for defense-related transuranic waste sits 2,150 feet below ground level. Airflow to the underground has been restricted following a radiological release in 2014.

When completed, the 26-foot-diameter utility shaft will provide air to WIPP’s new ventilation system, called the Safety Significant Confinement Ventilation System (SSCVS). The increased airflow provided by the system will allow for simultaneous mining, rock bolting, waste emplacement, and maintenance operations.

Commonwealth Fusion Systems (CFS) and Tokamak Energy Inc. are the two magnetic confinement tokamak fusion developers to receive a portion of the $46 million in funding announced by the Department of Energy in late May for the first 18 months of a public-private Milestone-Based Fusion Development Program aimed at developing fusion pilot plant designs and resolving related scientific and technological challenges within five to 10 years.

Jamie Coble

The nuclear power industry has the opportunity for significant advancements in the coming years, driven by the digital integration of instrumentation and controls (I&C), machine learning (ML), artificial intelligence (AI), and optimized operations and maintenance (O&M) technologies. These developments are the enabling technologies that can ensure the efficiency, safety, and reliability of our future fleet of nuclear power plants, propelling the industry toward a more sustainable and intelligent future.

I&C plays a vital role in monitoring and controlling various aspects of nuclear power plants. Traditional I&C systems have relied on hardwired control circuits, but modern advancements are shifting towards digital I&C systems, also known as digital control systems (DCS). These systems offer enhanced flexibility, scalability, and reliability. They utilize advanced sensors, data acquisition systems, and distributed control algorithms to enable real-time monitoring, fault detection, and control optimization.

The Nuclear Regulatory Commission is seeking comments on three draft documents that would update guidance for U.S. nuclear power plant owners requesting subsequent license renewals for operating reactors.

The deadline for submitting comments is September 11.

The government of the Republic of Korea and the country’s industrial sector are teaming up to promote the development of small modular reactors. At a launch ceremony for the SMR Alliance, held July 4, the participants announced strategic plans and signed business agreements.

Tohoku University and the University of Michigan are jointly sponsoring a series of workshops focused on sharing experiences between Japan and the United States on the decontamination and decommissioning of commercial nuclear power plants.

A full agenda for the workshop can be found here.

The deadline for registration is August 1. A registration form, along with further information, can be found here.

The energy ministries of Bulgaria and Ukraine have announced the signing of a memorandum of understanding to expand collaboration in the energy sector, including the nuclear energy sector.

Here is a recap of industry happenings over the past month:

ADVANCED REACTOR MARKETPLACE

Paragon to supply I&C for Xe-100 SMR

Paragon Energy Solutions and X-energy Reactor Company have entered into a preferred supplier agreement by which Paragon will be the exclusive worldwide supplier for three crucial instrumentation and control systems for X-energy’s Xe-100 advanced small modular reactors: the reactor protection system, post-event monitoring system, and neutron instrumentation system. The new agreement builds on an existing partnership between the two companies in the areas of critical safety mechanisms, which also includes Paragon’s HIPS FPGA system.

The current bull market for uranium seems to be heating up. “Fundamentals are strong, and new political incentives are in place to spur nuclear development,” according to an article on the Proactive Investors website, which also noted that the uranium supply “will need to increase significantly to meet the market’s needs if nuclear is to become a key source of energy in the global push to reduce carbon emissions.”

The European Union has selected a Westinghouse-led consortium to develop and deliver “a secure, fully European nuclear fuel supply” for Russian-designed VVER reactors in the EU and Ukraine, the U.S.-based firm announced last week.

Researchers from the Pusan National University in South Korea have developed a new calcium-doped ion exchanger for the removal of radioactive cesium from acidic nuclear power plant wastewater. The findings have the potential for developing more efficient and effective methods of remediating radioactive contamination.

The Nuclear Regulatory Commission has made public an unclassified version of its annual report to Congress on the results of its security inspection activities in 2022.

Really taking off during the pandemic, ANS’s online event programming remains very strong and continues to be a great resource for the nuclear community. This year alone, ANS has produced 14 different webinars—some of which are only available to members, with most available to the general public.

Urenco announced July 6 that it will expand enrichment capacity at its U.S. site in Eunice, N.M.—known as UUSA—by adding new centrifuge cascades to increase capacity by about 700 metric tons of separative work units per year, or a 15 percent increase, with the first new cascades coming on line in 2025.

There are two open positions on the Nuclear Regulatory Commission’s Advisory Committee on Reactor Safeguards (ACRS). To fill these positions, the NRC is looking for candidates who have extensive experience in nuclear reactor safety issues—especially in the engineering and safety aspects of new light water and non–light water reactor designs and technologies, or in similar areas of nuclear reactor and fuel cycle safety.

If we’re in a new nuclear renaissance, its capital would appear to be Ontario. On July 7, just two days after debuting a collaboration with Bruce Power to build up to 4.8 GW of new nuclear generation at the Bruce plant, the government of Ontario announced that it is working with Ontario Power Generation to begin planning and licensing for the deployment of three additional GE Hitachi Nuclear Energy (GEH) BWRX-300 small modular reactors at that utility’s Darlington site.

Ken Petersen
president@ans.org

It is a great time to be American Nuclear Society president. There are very positive articles in Nuclear News and other places on the advances in fusion, nuclear in space, isotopes, and new power plants. It seems that every month the good news keeps building. I am also fortunate to start my presidency after the extraordinary efforts of past presidents Steve Nesbit (2021–2022) and Steven Arndt (2022–2023).

Steve Nesbit created a special committee to make recommendations on the framework of a generic standard for a high-level radioactive waste repository. The excellent work is currently out for review and, once complete, this standard will be a significant step forward for existing and future reactors. When Steven Arndt started as ANS president last year, he said he would prioritize participation and advocacy, and in these regards he has been an outstanding nuclear advocate. He has taken advantage of being able to travel and has attended numerous conferences in person after the past few years of cancelations, postponements, and virtual meetings for ANS and other industry events. At the same time, Arndt has advocated for a Nuclear Worker Certification program. While the program is not yet approved, I believe it is an excellent initiative, particularly now, with so many people coming to the industry who are new to nuclear—and the growing need for more.

The Department of Energy has awarded an estimated $2.6 million to the National Governors Association (NGA) Center for Best Practices to work collaboratively with governors to solve the continued challenges posed by waste management and cleanup at DOE sites, the DOE’s Office of Environmental Management announced on July 5.