Antinuclear

What happens to all that highly enriched uranium in space?  Popular Mechanics, BY CAROLINE DELBERT, JUL 30, 2020   

• The U.S. Department of Energy (DoE) is looking for technology partners to help power the moon.
• This could begin a project that later includes powering a Mars surface mission.
• The Union for Concerned Scientists doesn’t want highly enriched uranium in space.

Scientists at the U.S. Department of Energy’s (DoE) Idaho National Laboratory have a new design for a nuclear power plant they say could allow humans to more easily live on the moon. As part of a form plan, the scientists say they want to have the fission reactor, safe launch, and landing system ready by 2027

What are the challenges of generating nuclear energy on the moon?

Design Development Today reports that the Union of Concerned Scientists expressed, well, concerns:

“Edwin Lyman, director of Nuclear Power Safety at the Union of Concerned Scientists, a nonprofit, said his organization is concerned the parameters of the design and timeline make the most likely reactors those that use highly enriched uranium, which can be made into weapons. Nations have generally been attempting to reduce the amount of enriched uranium being produced for that reason.”

While the Idaho National Laboratory and the DoE broadly are pushing for “advanced” reactor technology in terms of issues like modularity and safety, the “parameters of the design and timeline” they refer to—in this case advocating for a small, reliable, space-friendly design in just 6 years—almost definitely rules out the modular reactors being developed and certified now.
To fully test and regulate these reactors—and design the special edition to send to the moon in this timeframe—is probably impossible. To rush any nuclear approval is a terrible idea, not just for safety, but also for a public that’s already shy about nuclear energy.

Technology like thorium fuel is still far from ready for the market….