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Atomic Insights

Atomic energy technology, politics, and perceptions from a nuclear energy insider who served as a US nuclear submarine engineer officer

Advanced Atomic Technologies

Atomic Show #297 – Krusty – The Kilopower reactor that worked

May 19, 2022 By Rod Adams 10 Comments

Krusty Core showing heat pipe arrangement

Patrick McClure and David Poston successfully developed, obtained funding, constructed and operated a new atomic fission power source that produced useful quantities of electricity during the period from 2014-2018. That puts them into a rarified, perhaps unique position. Few US-based technologists have been through that process in the past 40 years.

Aside: Without some way to frame the statement so it excludes the US Navy it isn’t accurate to say no one else has accomplished this feat. End Aside

Patrick and David – and their supporting team – developed and operated the Kilopower reactor, also known as KRUSTY. That name comes from a creatively framed acronym – Kilopower Reactor Using Stirling TechnologY.

The proposed application for the system is to produce power for space missions that cannot be accomplished using either solar collectors or radioisotope thermal generators. The former imposes operational constraints with both intermittency factors and increasing distance from the sun. The later uses rare isotopes with limited heat production that constrain individual power devices to a thermal output of approximately 300 W when the device is new.

In brief, Krusty was a tiny reactor that was operated at a power level of 5 kWth to produce the equivalent of 1 kWe using Stirling Engines qualified for space travel. Heat pipes arranged around a solid UMO alloy annular core transferred heat from the reactor to the hot end of the Stirling engines. The cold side of the engines were designed to radiate heat into the vacuum of space. Reactor reactivity was adjusted using a movable beryllium reflector on the outside of the core. A boron carbide rod in the center of the annular core provided a second means of controlling the reactor. The core was 10 inches tall and had an outside diameter of 4 inches. The center annulus for 2 inches in diameter.

Aside: Past tense is the accurate way to describe Krusty. The system, including the core used, no longer exists. End Aside.

The program cost $18 M and took 3.5 years from initiation to final testing. It was funded partly by NASA and partly by NNSA.

We will be publishing a more detailed description of the technology and the development process in the near future, but for now, please listen to the show. If the audio program stimulates questions or comments, please join in a conversation here.

If you are intensely curious and cannot wait for our coming post, you can learn more about Krusty by visiting Space Nukes Technical Papers.

https://s3.amazonaws.com/AtomicShowFiles/atomic_20220517_297.mp3

Podcast: Play in new window | Download (Duration: 1:00:34 — 34.7MB)

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Filed Under: Advanced Atomic Technologies, Heat pipe reactors, Podcast, Space nuclear

The Assay TV speaks with Rod Adams, Managing Partner of Nucleation Capital and Atomic Insights host

February 20, 2022 By Editor Leave a Comment

The Assay is a media project of the 121 Group, based in Hong Kong, that serves investors, fund managers and analysts who are involved with and/or investing in a wide range of mining ventures. As part of their efforts to bring a greater understanding of the complex markets that control the prospects of mining ventures, The Assay TV produces a video series with CEO interviews from all over the world. On February 16, Adam Thompson hosted Rod Adams in a wide-ranging conversation about nuclear energy, uranium and the emergence of advanced nuclear designs in the coming years. This is the beginning of an exploration of the growing concerns about where and how the advanced nuclear sector will secure their projected fuel supplies and the impact of the growth of SMRs and Gen IV develop on uranium miners.

You can watch this interview with Rod by clicking on the above video or at Youtube here.

Filed Under: Advanced Atomic Technologies, Atomic education, Atomic Entrepreneurs, New Nuclear, Nuclear Fuel Cycle, Nuclear Waste, Podcast, Pro Nuclear Video, Uranium mining Tagged With: 121 Group, Adam Thompson, The Assay, The Assay TV, uranium, uranium market

Atomic Show #295 – Liz Muller, Co-founder and CEO of Deep Isolation

January 24, 2022 By Rod Adams 5 Comments

Deep Isolation is a young company developing solutions for “the nuclear waste issue.” They have built their solution option based on highly developed technologies used in the oil and gas drilling sector. Several decades ago, after discussing and evaluating several options, the world’s scientific and political communities came to a general consensus around the notion […]

Filed Under: Advanced Atomic Technologies, Nuclear Fuel Cycle, Nuclear Waste, Podcast

Atomic Show #294 – Mikal Boe, Core Power Founder and CEO

January 5, 2022 By Rod Adams 31 Comments

Mikal Boe has spent 30 years in and around the commercial shipping industry. Several years ago, he began wondering how his industry was going to meet the increasingly stringent rules for air pollution and CO2 production that were being implemented by governing regulators, especially the International Maritime Organization (IMO). His extensive technical research led him […]

Filed Under: Advanced Atomic Technologies, Atomic ships, Business of atomic energy, International nuclear, Molten salt cooled, Nuclear Ships, Nuclear workforce, Podcast

Catching Oklo — a rising star!

December 14, 2021 By Rod Adams 41 Comments

Update: On Jan 6, 2022, the NRC denied Oklo’s COA application “without prejudice.” Power published an article titled NRC Dismisses Application for Oklo Advanced Nuclear Reactor that provides a solid early summary of the action and its implications. A new generation of clean energy is on the horizon Oklo is a clean energy company that […]

Filed Under: Advanced Atomic Technologies, Investing, Liquid Metal Cooled Reactors, Micro Reactors, New Nuclear, Small Nuclear Power Plants

What makes smaller nuclear power systems so exciting?

September 21, 2021 By Rod Adams 27 Comments

Let me start by dispelling the notion that I think smaller, modular, manufactured nuclear power systems – often called SMRs or micro reactors – are the be all and end all solution to anything, including climate change or energy security. Though not THE solution, they have the potential to be a crucial, uniquely capable part […]

Filed Under: Advanced Atomic Technologies, Business of atomic energy, Clean Energy, decarbonization, Economics, Investing, New Nuclear, Small Nuclear Power Plants, Smaller reactors

China’s high temperature reactor – pebble bed modular (HTR-PM) achieves its first criticality

September 14, 2021 By Rod Adams 34 Comments

On the morning of September 12, 2021, reactor number 1 of the eagerly awaited HTR-PM project was taken critical for the first time. Initial criticality for any new reactor is a big deal for the people involved in the project; this one is a big deal for the future of nuclear energy. It might also […]

Filed Under: Advanced Atomic Technologies, Atomic history, Business of atomic energy, Gas Cooled Reactors, Graphite Moderated Reactors, International nuclear, New Nuclear, Pebble Bed Reactors, Small Nuclear Power Plants, Smaller reactors

A Path from Coal to Nuclear is Being Blazed in Wyoming

August 12, 2021 By Valerie Gardner 37 Comments

Many of those who care about finding solutions to the physical distress that our climate is experiencing, as reported on this week in a landmark 1,300 page report by the IPCC‘s Sixth Assessment Working Group 1 (Climate Change 2021: The Physical Science Basis), are not looking at Wyoming. But based upon the announcement made in […]

Filed Under: Advanced Atomic Technologies, Another Blogger for Nuclear Energy, Atomic Entrepreneurs, Atomic history, Atomic politics, Clean Energy, Climate change, Coal, decarbonization, Fossil fuel cooperation, Innovation, New Nuclear, Pro Nuclear Video, Smaller reactors Tagged With: Bill Gates, Gary Hoogeveen, GE Hitachi, Governor Mark Gordon, IPCC, Jennifer Graholm, physical sciences basis, Senator John Barrasso, TerraPower, Wyoming

Change is in the wind: Commencing a new phase as a Venture Capitalist

February 3, 2021 By Rod Adams 11 Comments

Atomic energy is a tool that is capable of helping address some of humanity’s most wicked challenges. Clean, abundant, reliable and affordable power makes everything we do a little easier and is becoming increasing urgent in the era of climate change. Unfortunately, atomic energy is a long way from reaching its potential or even achieving […]

Filed Under: Advanced Atomic Technologies, Atomic Entrepreneurs, Clean Energy, Climate change, decarbonization, Environmentalists for Nuclear Energy, Investing, New Nuclear, Venture Capital

Atomic Show #288 – Per Peterson, CNO, Kairos Power

January 25, 2021 By Rod Adams 9 Comments

Kairos Power Is developing a truly new nuclear fission power technology. Their KP-FHR (Kairos Power – Fluoride Salt Cooled, High Temperature Reactor) combines the solid fuel form usually associated with gas-cooled reactors with the fluoride molten salt often associated with fluid-fuel reactors. For Atomic Show #288, my guest was Dr. Per Peterson, Kairos Power’s chief […]

Filed Under: Advanced Atomic Technologies, Molten salt cooled, Pebble Bed Reactors, Podcast

Will heavy nitrogen become a widely used fission reactor coolant?

November 17, 2020 By Rod Adams 43 Comments

Heavy nitrogen has the potential to become as important to the future of atomic fission power system development as heavy water has been up until now. That’s a bold statement, so let me explain why I believe it’s true. Are any nitrogen cooled reactors being used today? One nuclear fission power system – the US […]

Filed Under: Advanced Atomic Technologies

Atomic Show #287 – Darren Gale, VP Commercial Operations, X-Energy talks about Xe-100

November 12, 2020 By Rod Adams 2 Comments

X-Energy is the lead recipient for one of two industry groups selected to receive $80 M in Department of Energy (DOE) funding as part of a public-private partnership program to demonstrate advanced nuclear power plants on an aggressive time table. Its primary partner in the endeavor is Energy Northwest, which currently owns and operates the […]

Filed Under: Advanced Atomic Technologies, Gas Cooled Reactors, Graphite Moderated Reactors, New Nuclear, Pebble Bed Reactors, Podcast, Small Nuclear Power Plants

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