ANS Standards Committee publishes new standard for light water reactor risk-informed, performance-based design
The new standard ANSI/ANS-30.3-2022, Light Water Reactor Risk-Informed, Performance-Based Design, has just been issued by the American Nuclear Society. Approved by the American National Standards Institute (ANSI) on July 21, 2022, the standard provides requirements for the incorporation of risk-informed, performance-based (RIPB) principles and methods into the nuclear safety design of commercial light water reactors. The process described in this standard establishes a minimum set of process requirements the designer must follow in order to meet the intent of this standard and appropriately combine deterministic, probabilistic, and performance-based methods during design development.
How Kairos Power is applying rapid iterative development to the licensing process as part of its strategy to deliver on cost
Laufer
Developing a first-of-a-kind reactor is a daunting endeavor. To be successful, advanced reactor designers need to achieve cost certainty by delivering a safe and affordable product at the promised cost. To meet this goal, Kairos Power structured its approach around four key strategies: 1) achieving technology certainty through a rapid iterative approach; 2) achieving construction certainty by demonstrating the ability to build it; 3) achieving licensing certainty by proving Kairos can license it; and 4) achieving supply chain certainty by vertically integrating critical capabilities. By mitigating risk in these four key areas, Kairos Power is confident that it will get true cost certainty for our future products.
The third prong in Kairos’s strategy—achieving licensing certainty—was a key driver in the decision to build the Hermes low-power demonstration reactor, and it remains a major workstream as the company’s construction permit application (CPA) undergoes review by the U.S. Nuclear Regulatory Commission. Licensing a new nuclear technology is no small challenge, and there are multiple approaches companies can take. Here’s a look at how we at Kairos are approaching it.
The Palisades nuclear power plant.
The Nuclear Regulatory Commission has made Holtec International’s post-shutdown decommissioning activities report (PSDAR) for the closed Palisades nuclear power plant available for public comment until December 27. The NRC also plans to hold a public meeting to discuss the report on the evening of September 22 at the South Haven campus of Lake Michigan College, about 10 miles north of the Palisades site in Covert, Mich.
While many Californians are hopeful the state’s last nuclear power reactor can be saved, PG&E is actively preparing for decommissioning.
The Diablo Canyon nuclear power plant in San Luis Obispo County, Calif.
(Photo: Wikimedia Commons)
The reports of the death of the Diablo Canyon nuclear power plant may be greatly exaggerated. While Pacific Gas and Electric (PG&E) announced as early as 2016 that it would be closing California’s last operating nuclear power plant at the end of its current operating license, there has been growing political pressure to keep the plant, and its 2,200 MWe of carbon-free energy, running.
NIST's Center for Neutron Research in suburban Gaithersburg, Md. (Photo: NIST)
The Nuclear Regulatory Commission announced on August 2 that it had issued a confirmatory order to the National Institute of Standards and Technology (NIST) for violating NRC requirements during a February 2021 fuel failure at the 20-MWt NIST Center for Neutron Research (NCNR) research reactor in Gaithersburg, Md. NIST committed to improving its training for fuel handing procedures and related management activities, safety culture program, reactor facility operations staff and management, corrective action program and operational procedures, and emergency response resources and procedures, among other things.
An artist rendering of the Science and Engineering Research Center under construction at Abilene Christian University. The SERC will house the NEXT Lab's new advanced university research reactor sponsored by Natura Resources.
The first university-based molten salt research reactor (MSRR) is one step closer to reality with Abilene Christian University’s Nuclear Energy eXperimental Testing (NEXT) Laboratory recently signing a contract with Teledyne Brown Engineering. After considering more than a dozen engineering firms, the NEXT Lab selected Teledyne Brown to perform the front-end engineering and design work to produce the reactor on the Abilene campus. The contract was described by NEXT Lab director Rusty Towell as “a significant step into the detailed design and construction phase of this project.” The hope is that the 1-MWt MSRR will go critical in 2025.
A rendering of Holtec’s proposed HI-STORE CISF in New Mexico. (Image: Holtec)
The Nuclear Regulatory Commission has published its final environmental impact statement (EIS) for Holtec International’s proposed HI-STORE consolidated interim storage facility (CISF) for spent nuclear fuel in southeastern New Mexico. Based on its environmental review, the NRC staff recommends issuing the license, subject to the findings in the staff’s ongoing safety review of the application.
Turkey Point nuclear plant. (Image: FPL)
Florida Power & Light (FPL) has submitted a supplemental environmental report to the Nuclear Regulatory Commission in support of the subsequent renewed licenses for Turkey Point Units 3 and 4. According to a June 22 NRC press release, FPL’s report was submitted on June 10 to satisfy a “deficiency” in subsequent license renewal applications (SLRA) that rely on the generic environmental impact statement (GEIS) on license renewal and is being reviewed prior to docketing. William D. Maher, director of nuclear licensing projects at FPL, submitted the report, noting that “FPL’s review did not identify any information materially changing the impact assessments” in the NRC’s supplemental GEIS for the Turkey Point licenses.
The Spherical Tokamak for Energy Production (STEP), shown here, is a government-backed prototype fusion energy plant planned for operation in the U.K. in the early 2040s. (Image: UKAEA)
Future fusion energy facilities will continue to be regulated by the Environment Agency (EA) and Health & Safety Executive (HSE), the U.K. government announced June 20, and existing law on nuclear regulations will be amended to exclude fusion energy facilities from nuclear fission regulatory and licensing requirements. The move was announced by the United Kingdom Atomic Energy Authority (UKAEA) with the expectation it would provide “clarity to developers of prototype/demonstration fusion facilities currently being planned to support rapid commercialization.”