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Antares achieves zero-power criticality at INL
Leveraging more than $140 million in private capital fundraising, over 322,000 square feet of operational manufacturing space, and multifaceted partnerships with the Departments of Energy and Defense, reactor start-up Antares has become the first company involved in the Reactor Pilot Program to achieve zero-power fueled criticality—a full month ahead of the July 4 deadline set by President Trump’s Executive Order 14301.
This milestone, announced yesterday, was achieved with the company’s Mark-0: a sodium heat-pipe-cooled, TRISO-fueled microreactor. The Mark-0 is a forerunner to the company’s flagship design, which it calls the R1. For Antares, this development represents a key validation of its reactor physics, control systems, and supply chain.
Laila El-Guebaly
Fusion Science and Technology | Volume 79 | Number 8 | November 2023 | Pages 919-931
Research Article | doi.org/10.1080/15361055.2022.2151820
Articles are hosted by Taylor and Francis Online.
In recent decades, fusion designers have become increasingly aware of the large amount of mildly radioactive materials that fusion generates in comparison to their fission counterpart, which is a problem that was overlooked in early fusion studies. This radioactive waste (radwaste) problem could influence public acceptability of fusion and will certainly become a significant issue in the immediate future as fusion moves forward toward commercialization. There is a growing appreciation to revisit the 1960s decision that relegated all radwaste to the back end as only a disposal issue. In light of the challenges facing fusion in the 21st century, a thoughtful alternate approach that promotes recycling and clearance of all fusion radioactive materials is considered to stress the environmental value of fusion in utilizing natural assets efficiently, assert the fundamental premise of fusion as a nuclear energy source with minimal environmental impact, and gain public acceptability for fusion. This strategy helps to reach the common goal of several organizations that recommend recycling and clearing as much radioactive material as practically possible to reduce final radwaste burdens/risks and to maximize the use of natural resources. Recognizing the relatively early stages of commercial fusion maturity, lessons learned and worldwide industrial experiences from other nuclear fields are valuable resources for the fusion recycling/clearance approach. To make such an approach a reality, the global fusion program should be set up to accommodate the new strategy at an early stage of fusion designs and address the identified issues and needs with directed research and development programs. The absence of official fusion regulatory guidelines has been recognized for several decades, but some progress has been made in recent years, recognizing that fusion is different from fission and has a different radionuclide profile.