Decouple

Dr. Chris Keefer
Decouple
Latest episode

307 episodes

  • Decouple

    Why Nuclear Shipping Is Inherently Niche

    2026/1/08 | 1h 26 mins.

    Why have we built nuclear ships before, proven they can operate, and still not made them commonplace? Nick Touran breaks down the history of maritime nuclear power, from the Nuclear Ship Savannah and Otto Hahn to Japan’s Mutsu and Russia’s Sevmorput, then pivots to floating nuclear power concepts such as the MH 1A Sturgis and the Offshore Power Systems program. We explore what worked, what failed, and what keeps blocking adoption, including port access rules, indemnity and international agreements, staffing costs, containerization economics, shielding and public reaction, and the unique operational demands of running reactors at sea.Listen to Decouple on:• Spotify: https://open.spotify.com/show/6PNr3ml8nEQotWWavE9kQz• Apple Podcasts: https://podcasts.apple.com/us/podcast/decouple/id1516526694?uo=4• Overcast: https://overcast.fm/itunes1516526694/decouple• Pocket Casts: https://pca.st/ehbfrn44• RSS: https://anchor.fm/s/23775178/podcast/rssWebsite: https://www.decouple.media

  • Decouple

    Janus: The Army’s Second Attempt at Fielding Microreactors

    2025/12/18 | 1h 12 mins.

    In this episode of Decouple, Dr. Jeff Waksman, Principal Deputy Assistant Secretary of the Army for Installations, Energy and Environment, explains how the U.S. Army is making a second attempt at making microreactors great again. The discussion situates the Janus microreactor program in the long history of the Army Nuclear Power Program and Project Pele, highlighting why earlier small reactor deployments failed to compete with diesel and grid power even in extreme environments, and why Janus represents a fundamentally different approach.Janus is best understood as an attempt to apply the Commercial Orbital Transportation Services model to nuclear energy, using milestone-based funding, hard downselects, and vendor replaceability to subsidize learning rather than electricity sales. The conversation explores the severe economic constraints facing one to ten megawatt reactors, the limits of the SpaceX analogy, and the unglamorous but decisive challenges of fuel logistics, waste removal, and slow nuclear learning cycles that will ultimately determine whether microreactors can ever move beyond demonstration and into durable military let alone commercial service.Listen to Decouple on:• Spotify: https://open.spotify.com/show/6PNr3ml8nEQotWWavE9kQz• Apple Podcasts: https://podcasts.apple.com/us/podcast/decouple/id1516526694?uo=4• Overcast: https://overcast.fm/itunes1516526694/decouple• Pocket Casts: https://pca.st/ehbfrn44• RSS: https://anchor.fm/s/23775178/podcast/rssWebsite: https://www.decouple.media

  • Decouple

    Why the First Nuclear Renaissance Failed: Can America Build Eight AP1000s Now?

    2025/12/11 | 1h 33 mins.

    The first U.S. nuclear renaissance collapsed under the weight of cheap shale gas, lost institutional expertise, and disastrous projects like Vogtle and Summer. Today, America is planning a fleet of eight AP1000 reactors, backed by unprecedented federal incentives. But can the country actually build large nuclear again?In this video, we break down what really killed the 2000s revival, why Fukushima wasn’t the turning point, and how AP1000 and ESBWR passive safety performed in station-blackout analyses. Most importantly, we explore why nuclear success depends not on reactor design, but on rebuilding the developer organizations needed to execute these megaprojects.If the United States can rebuild those institutions, a real nuclear comeback is possible. If not, history risks repeating itself.Listen to Decouple on:• Spotify: https://open.spotify.com/show/6PNr3ml8nEQotWWavE9kQz• Apple Podcasts: https://podcasts.apple.com/us/podcast/decouple/id1516526694?uo=4• Overcast: https://overcast.fm/itunes1516526694/decouple• Pocket Casts: https://pca.st/ehbfrn44• RSS: https://anchor.fm/s/23775178/podcast/rssWebsite: https://www.decouple.media

  • Decouple

    The Real Stakes of a Saudi Nuclear Deal

    2025/12/02 | 1h 3 mins.

    Saudi Arabia burns nearly one million barrels of oil per day to keep its lights on, yet it has cheaper and faster ways to replace this than by building large nuclear reactors. So why is the Kingdom pushing so hard for a civil nuclear deal? This episode walks through the strategic logic that has animated Riyadh’s nuclear ambitions for more than a decade. The answer lies in prestige, industrial capacity, and the latent fuel cycle capabilities that come with a power reactor programme, all set against the backdrop of regional tension with Iran.We look closely at the recent Washington announcement that United States Saudi 123 talks have been “concluded,” the unresolved fight over enrichment rights, and the geopolitical pressure being applied to South Korea to align its nuclear exports with American interests. From the legacy of the Quincy pact to the rivalry between Westinghouse and KEPCO, this conversation unpacks how a simple reactor tender has become one of the most consequential energy and security decisions in the Gulf.Listen to Decouple on:• Spotify: https://open.spotify.com/show/6PNr3ml8nEQotWWavE9kQz• Apple Podcasts: https://podcasts.apple.com/us/podcast/decouple/id1516526694?uo=4• Overcast: https://overcast.fm/itunes1516526694/decouple• Pocket Casts: https://pca.st/ehbfrn44• RSS: https://anchor.fm/s/23775178/podcast/rssWebsite: https://www.decouple.media

  • Decouple

    Microreactors: A Mirage of American Nuclear Innovation?

    2025/11/25 | 50 mins.

    In this episode, Chris Keefer speaks with Hadron Energy founder Samuel Gibson, the twenty four year old entrepreneur pursuing a ten megawatt integral pressurized water microreactor through a one point two billion dollar business combination with GigCapital7. Gibson outlines why he believes light water is the fastest licensing path, how he assembled a veteran nuclear team, and why Hadron shifted from a one megawatt concept to a ten megawatt design built around LEU plus fuel, modular plant layouts, and air cooled decay heat removal. Keefer presses on the harder questions: whether factory fabrication can overcome the fixed civil works and regulatory burdens that have crippled previous SMR efforts like NuScale and mPower, what off the shelf really means in a hollowed out US supply chain, and how long refueling cycles, fuel qualification, and decommissioning challenges scale at microreactor size. The conversation becomes a broader test case for whether startup optimism can meaningfully confront the industrial, economic, and physics grounded constraints that define real world nuclear deployment.Listen to Decouple on:• Spotify: https://open.spotify.com/show/6PNr3ml8nEQotWWavE9kQz• Apple Podcasts: https://podcasts.apple.com/us/podcast/decouple/id1516526694?uo=4• Overcast: https://overcast.fm/itunes1516526694/decouple• Pocket Casts: https://pca.st/ehbfrn44• RSS: https://anchor.fm/s/23775178/podcast/rss

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About Decouple

There are technologies that decouple human well-being from its ecological impacts. There are politics that enable these technologies. Join me as I interview world experts to uncover hope in this time of planetary crisis.
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