US Nuclear Corp
@UltraSafeNuke
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Ultra Safe Nuclear Corporation (USNC) designs and manufactures TRISO nuclear fuel, the Micro Modular Reactor, the Pylon nuclear genset, and nuclear rockets.
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Joined August 2017
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Last Seen Profiles
Pinned Tweet
China is the leading manufacture of conventional and advanced reactors. They also produce more TRISO fuel than the rest of the world combined. We have to do better. We're doing our part to re-industrialize 🇺🇸 starting with our TRISO nuclear fuel factory.
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#ItalianTechWeek
@ElonMusk
says that we shouldn't turn away from
#nuclearenergy
, and that we should keep
#reactors
running because they are a safe source of
#energy
.
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Fun fact: Starship’s payload is big enough for a Micro Modular Reactor unit.
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Interceptor could be the fastest human-made object ever made and it will be able to catch up to ʻOumuamua or other fast moving objects in space to perform observations. The spacecraft is powered by Ultra Safe Nuclear's radioisotope decay source called EmberCore.
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Walnut sized nuclear fuel pellet = 10,000 liters of diesel. Not bad for a rock.
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How do you control a nuclear reactor like the Micro Modular Reactor?
There's two knobs to change the power: control rods and coolant flow.
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It's not just 10x more energy dense than the next best fuel.
It's 1,000,000x
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The Micro Modular Reactor (MMR) is a 4th Generation nuclear energy system that delivers safe, clean, and cost-effective electricity to users anywhere. MMR is being licensed in Canada and the U.S.A. and is the first "fission battery" in commercialization.
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Nuclear caviar – final product of the solution gelation process. Do not eat.
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Micro Modular Reactor, 7-unit plant.
Need more power? Just add more units.
There are no limits.
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How does our nuclear reactor work? why is it small? and why does it deserve the term "ultra safe"?
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Reminder that the US gov still flies jet fuel down to Antarctica in giant bladders. Antarctica is still powered by fossil fuels, 80 years after the start of the Atomic Age.
They could be using a couple of Pylon nuclear gensets instead.
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We sort millions, and soon billions, of these sesame sized nuclear TRISO particles.
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We're pleased to share educational resources to explain some of the most important concepts in nuclear energy. Updated monthly.
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Nuclear rocket engines can experience "indigestion." The engine heats hydrogen gas with a fission core and expands that gas through a nozzle to produce efficient thrust. Simple, except that the high temperature, fast moving hydrogen is like a spicy taco: corrosive and erosive. If
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Why is it difficult to make very small nuclear reactor cores, say 50-100 cm in diameter?
[1/12]
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Watch neutrons propagate through a nuclear core in our toy simulator.
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Our little nuclear fuel pilot line can produce TRISO fuel at a rate of 2kg per hour. That’s the energy equivalent of 600,000 liters per hour or 24 truck tanks. Now imagine how comically big the numbers get for the full factory.
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Future moon bases will probably be producing hydrolox (LH2/O2) propellant from water. A lot of it.
The Mars Base Camp requires 1,640 t/yr.
Supporting daily commuter flights from Moon to LEO requires almost 20,000 t/year.
Lots of power is needed. We’ve identified the Cu-Cl
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A Uranium bearing sphere is coated with special ceramic layers designed like tiny pressure vessels. The layers contain fission products inside and ensure mechanical and chemical stability during irradiation and temperature changes. This is called a TRISO Particle.
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@moszis
Yea. Gotta support the hydrolox and metholox refueling stations. TBH, for the moon/mars we’re developing a smaller system called Pylon that has a smaller core and is higher temperature (less radiator mass) - fits well within the payload and launch envelopes.
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Nuclear Thermal Propulsion update at ANS NETS. Key updates on this design:
- 30% design review with NASA complete
- Individual TRISO particles being placed around coolant channels. Samples produced. Helical fuel elements prototyped
- Inco saves mass
- monolithic beryllium
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1/ Solar power is hard on Mars (Moon is even harder). Nukes will help us create a foothold for humanity.
🧵
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This is a Uranium isotope with 92 protons and 143 neutrons. It's U-235. It's relatively stable with a half-life of 704 million years.
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We've been producing TRISO particle fuel embedded in Silicon Carbide for some time now. Here's how it's made 🇺🇸
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We use QR codes on the bottom face of each FCM pellet to label and identify each pellet produced.
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The
@UltraSafeNuke
team is excited to announce the successful delivery of nuclear fuel to NASA’s Space Nuclear Power and Propulsion program. This marks the first delivery by industry of uranium nitride coated particle fuel to the agency.
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We sort millions, and soon billions, of these sesame sized nuclear TRISO particles.
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This is the southernmost toilet on Earth. It could also be the southernmost nuclear powered toilet. Sadly, it’s still powered by jet fuel.
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How much geothermal power is there?
Uranium decays inside the Earth to produce about 40% of the Earth's total geothermal energy production of 44 TW. Geothermal energy is just nuclear decay energy. It drives plate tectonics and volcanic activity.
Today's human civilization
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We're pursuing several solutions at USNC to make commercial nuclear gensets that together mark a fundamental breakthrough in miniaturizing nuclear cores. These are the technologies that underpin our Pylon platform.
1. Pack the TRISO particles
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Why is it difficult to make these metal hydride moderators?
There are two main challenges in the fabrication of hydride moderators.
The 1st is the production of bulk yttrium hydride in large-scale, crack-free, bulk form.
Yttrium and Zirconium love hydrogen, and will destroy
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Our Pylon nuclear genset will utilize supercritical CO2 turbines from Peregrine Turbine Technologies. We're eager to build the first unit and deploy Pylon's across the planet.
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This is why there's so much interest in nuclear energy.
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Humanity is still <1 on the Kardashev scale. We've got a ways to go. Besides expanding solar deployments on Earth, we need master the use of nuclear energy on Earth and in Space.
In space, energy is used for propulsion, life support, compute, in situ resource utilization, etc.
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The Pylon architecture is a commercially viable fission power system designed for safely generating electrical and thermal power anywhere. Below, you can see the Earth version, fully containerized.
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[ ] Flowing nuclear fuel spheres in the TRISO fabrication process. This bath is warm, and the droplets undergo thermally activated reactions that solidify the droplets into soft gel spheres, a few millimeters in diameter.
[1/4]
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Solar panels have been the backbone for space power. But if you want a lot more power, fission becomes extremely compelling. It's lighter, it scales better, and it doesn't matter how far from the sun you are.
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We're excited to announce the opening of our Pilot Fuel Manufacturing facility in Oak Ridge, which will produce the first fuel for testing and qualification for use in our advanced Micro Modular Reactor (MMR®) Energy System.
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What type of reactor architecture is best suited for military bases? DIU has released their call for microreactor proposals at military installations, and the requested design features and capabilities are a near exact match of our Micro Modular Reactor®️
We look forward to
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On 12/2/1942, Fermi and his team initiated the world's first self-sustaining nuclear chain reaction. 79 years later, this inspires us as we use this technology to create safe, reliable energy on earth and in space to get to
#NetZero
with
#nuclear
power.
#WorldNuclearEnergyDay
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A breakthrough in our FCM fuel results in both higher power and increased safety, enabling the MMR to make three times more power. The MMR can use LEU or HALEU and operate at various power levels and serve many needs with a single standardized design.
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The Micro Modular Reactor system is a 4th Generation nuclear energy system that delivers safe, clean, and cost-effective electricity and heat to remote mines, industry, and communities. It is the leading SMR project in Canada.
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Safety starts by maximizing surface area to power ratio. Also should minimize the power density. This ensures that during adverse conditions, heat can get out of the core without any moving parts or fluids, without power or human action.
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Turbine blades, casting molds, nuclear fuel, drill bits, semiconductors, battery electrodes. What do they all in common?
Silicon Carbide
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What is a hydride moderator and what's it got to do with trash can sized nuclear reactors? We are now making hydrides on a daily basis to supply R&D and testing needs for USNC and other partners.
[1/12]
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From Fermi to the future - Italy's nuclear journey may soon resume with Ultra Safe Nuclear's Micro Modular Reactor. We are ramping up efforts in Italy to produce and deploy MMRs. Forza Italia!
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Ultra Safe Nuclear and Lappeenranta University of Technology to explore first advanced research microreactor in Finland
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When we first started developing nuclear gensets (aka microreactor, aka fission battery, aka containerized reactor) in 2011, the only similar effort was KRUSTY at LANL, and they were focused on HEU fuel, heat pipes, and Stirling engines - not aiming for civilian applications.
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glorious power transmission cable. we could fill this up with about 100 MMR nuclear units
The POWER in my hand ✋🏻 This is a slice of Western Link sub sea cable.
At 600kV DC and 2.25GW continuous rating, this segmented copper, paper / polypropylene HVDC cable is the highest voltage power cable in use IN THE WORLD and the highest power single cable IN THE WORLD 🏴🏴😍
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In a way there are alternatives to nuclear energy. There was no heaven-ordained requirement that the age of fossil fuel be replaced by the age of fission, nor a cosmically ordained anthropic principle that required the number of neutrons emitted per neutron absorbed in U-235 to
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We’ve got to stop desecrating the dead dinosaurs in their graves. Use the atomic power. Unleash the full human potential.
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This.
but the heat is provided by a nuclear core instead of diesel. Refuel every 5 years.
Enter Pylon
See all details on this 2250 kW Cummins at . With on 58 hours, this unit will not last long!
#immediateavailability
#cummins
#dieselgenerator
#standbygenerators
#generatorforsale
#engine
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Fission power holds great promise for providing the 24/7 Megawatt-class power needed for humanity to live, work in orbit, and the lunar surface.
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@Twe_blabla03_et
Difficult to lose. They are easily detected. But would cause issues for sure
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Meet Fully Ceramic Micro-Encapsulated Fuel, or FCM Fuel. Made in the USA.
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We want to travel further and faster, grow and expand, live longer and better. Energy is the ultimate constraint on our human ambitions. We are loosening that constraint with advanced nuclear reactors and fuels providing zero-carbon power and heat.
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Alaska shows great leadership with new microreactor bill.
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@Rainmaker1973
Here's a nice visualization of the diesel equivalent for one pellet of a similar nuclear fuel.
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But we have a plan, and we're introducing several solutions to deliver compact nuclear cores that are economically viable.
[12/12]
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Coated particle fuel was first developed for the Dragon Reactor in the UK in the 1960s, and follow-on gas reactors in Germany, the United States, Japan, South Africa, and China. The fuel is extremely robust, with over 60s years of development and experience.
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Nuclear reactors are usually pretty complex systems, but we’ve managed to explain the main principles in a short video - partly because the MMR is one of the simplest approaches to nuclear reactor.
How it Works – the Micro Modular Nuclear Reactor
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We are thrilled to announce that our
#MicroModularReactor
is the first and only
#SMR
technology to be part of a project entering formal licensing with the
@CNSC_CCSN
.
.
.
.
.
#USNC
#nuclear
#nuclearenergy
#netzero
#mmr
#ChalkRiver
#carbonfree
#Canada
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The MMR Core is made up of several hundred Graphite Blocks with a few tons of FCM Fuel pellets (cylinders). The fuel provides best in class performance during operations as well as long term storage, outlasting the radioactivity of the spent fuel.
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We use dozens of these and have plans for deploying 100s of DM’s largest powder bed printers combined with chemical infiltration and post processing techniques to achieve highly tuned ceramic composites for nuclear cores.
"Ceramics AM is hotter than ever," said
@VoxelMatters
, especially with
#SiliconCarbide
which is paving the way for the future of advanced
#ceramic3Dprinting
. Read the article to learn more.
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Using solar panels, you can expect about 7.6 kWh/m2/day in the Sahara and about 3 kWh/m2/day in New York City. On Mars, you’ll be lucky to get 1.8 kWh/m2/day in the best spots. And you need batteries. Lots of batteries.
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The intensely hot process of coating TRISO particles in a fluidized bed chemical vapor deposition chamber. It's a bit like coating a jawbreaker.
[1/2]
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We can make basically any object you want out of refractory ceramics. Topologically optimized heat exchangers? High temperature extremely corrosion resistant components? Casting cores and molds? Precision turbine parts?
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See inside the Micro Modular Reactor. This is a High Temperature Gas Cooled Reactor being deployed in Canada, the US, and worldwide.
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Like batteries, multiple MMR units can be linked together to provide as much power as needed. Multiple MMR units can power communities in the middle of nowhere, large industrial sites, and cities. Need more power? Just add more units.
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Fission power holds great promise for providing the 24/7 Megawatt-class power needed for humanity to live, work in orbit, and the lunar surface.
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We're excited to announce our enrichment services supply agreement with
@UrencoUSA
, the first commercial purchase of enriched
#uranium
for use in an
#advancedreactor
anywhere in the world.
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Good news
@elonmusk
,
@NASA
is working on nuclear thermal rockets for space travel.
@UltraSafeNuke
is one of the leading designers for this project.
@WorldAndScience
Nuclear thermal rocket for fast transit around solar system would be a great area of research for
@NASA
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FCM Fuel pellet cut in half, showing the encapsulated TRISO particles.
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⚛️"We have to open our minds to third generation
#nuclearenergy
being a possible solution."⚛️ The edge of
@U2
.
.
.
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Why is TRISO () one of the leading fuel forms for advanced nuclear reactors worldwide including small modular reactors (SMRs), and micro modular reactors? TRISO particle fuel is fundamentally different from conventional fuels. TRISO are sesame sized ceramic
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USNC Selects Gadsden, Alabama for Advanced Microreactor Assembly Plant:
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What do you call a group of nuclear engineers doing sit-ups?
The core development team.
#NationalTellAJokeDay
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USNC is delighted to enter the FEEED phase to demonstrate PYLON at the NRIC DOME Facility. Demonstration of this technology will enable compact, low mass (10-ton class) nuclear systems and develop future markets to attract new classes of customers to the benefits of advanced
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Did you know we are developing reactors for space? The Pylon is a low-enriched uranium (LEU) fission reactor system utilizing the core technology of the MMR to provide electrical power and heat in locations such as the Moon, Mars, and open space.
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Look inside our Nuclear Thermal Propulsion Engine. Learn more at:
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Today
@global1stpower
, our partnership with
@opg
, announced a major achievement: the project is now the first and only
#smallmodularreactor
project to enter into formal licensing in Canada. Congratulations to the GFP team on continuing to lead the way!
.
.
#Nuclear
#NuclearEnergy
Exciting news:
Global First Power’s proposed Project enters formal phase of Canadian Nuclear Safety Commission licensing.
See our news release here:
#nuclear
#smr
@opg
@UltraSafeNuke
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1. A core must achieve criticality (self sustaining neutron population), and this requires a minimum amount of fuel - the critical mass.
[2/12]
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@deltaIV9250
You’ve got to make every kg count. So please bring a few dozen tons of Uranium, not a million tons of solar panels and batteries.
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What is inherent safety?
Trevor Kletz, who was the safety adviser to ICI Petrochemical Division, coined the phrase "inherent safety" to connote chemical plants whose safety depended not on the active intervention of mechanical, electrical, or human agents but,
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.
@UltraSafeNuke
,
@global1stpower
, and
@opg
propose to construct and operate a 15MW thermal (approximately 5 MW electrical) MMR at the Chalk River Laboratories, owned by
@AECL_EACL
and operated by
@CNL_LNC
.
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5. You need to add coolant channels to extract heat from the hot core, and these consume quite a bit of volume. It's about 5% for a reactor like the USNC MMR, and ~35% for pebble bed reactors like the one below. Big waste of space.
[8/12]
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Exciting news for Ontario and the SMR industry in Canada! Congratulations to GE-Hitachi on being selected by Ontario Power Generation for the first new grid-scale nuclear reactor to be built in Canada in more than 30 years.
OPG is excited to announce that we've chosen
@gehnuclear
to be our technology development partner on a new Small Modular Reactor (SMR) at Darlington nuclear. Together we will build Canada's 1st grid-scale SMR by 2028. Learn more:
#WorldNuclearEnergyDay
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Inspiring. Key takeaways for nuclear.
1. Get a design finished and licensed, and ideally demonstrated. Design for cost. Design for manufacturing.
2. Be ready for massive orders. Only large, firm orders with financing up front will unlock the expansion in reactor and fuel
During WW2, the US built more airplanes than have been built for commercial transport in the entire history of aviation. This week on Construction Physics, I look at how that happened.
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Establishing permanence beyond low earth orbit will be greatly enabled by megawatt-class fission systems.
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Framatome and Ultra Safe Nuclear to Form a Joint Venture to Manufacture TRISO and FCM Fuel:
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Megawatt-class fission power systems can provide the energy for key architecture building blocks, such as propellant production, growing food, and in-space manufacturing that are not easily provided by solar on the megawatt level.
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2. To stay below 20% enrichment Uranium, as basically required by all international nuclear agreements for civilian power, you have to add more fuel.
[3/12]
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These hydrides are being made in Salt Lake City, Utah at our Advanced Ceramics Manufacturing facility.
What is a hydride moderator and what's it got to do with trash can sized nuclear reactors? We are now making hydrides on a daily basis to supply R&D and testing needs for USNC and other partners.
[1/12]
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