Reposted from Legal Insurrection
The last time we checked on the nation’s energy industry, the Biden-Harris administration banned drilling for gas and oil on 28 million acres of Alaska (rescinding the order signed by President Donald Trump).
However, there is better news on the nuclear energy front. This is good news given tht nuclear energy is the only rival to fossil fuels in efficiency and cost-effectiveness and is worthy of supplying power on a civilization-level.
The U.S. Nuclear Regulatory Commission has approved construction of the first fourth-generation nuclear reactor in the country.
According to Interesting Engineering, the new Hermes reactor will be the first one built in the United States in 50 years that won’t be cooled by light water. Instead, it will use a system of molten fluoride salt, and a TRISO (tri-structural isotropic particle) fuel pebble bed design will power the generator.
Molten fluoride salts have “excellent chemical stability and tremendous capacity for transferring heat,” per the report, meaning it stays cooler and dissipates heat much faster than the light water that has been used for so long in American reactors.
The fuel bed consists of hundreds of millimeter-sized particles of uranium encased in multiple layers of special ceramic, which allows each individual piece of fuel to have its own containment and pressure vessel, per Ultra Safe Nuclear. The ceramic casing is stronger and more resilient than the typical zirconium alloy, meaning it can withstand higher temperatures and neutron bombardment past the failure point of other types of fuel.
On top of that, because each individual piece of fuel is so small, in the event that one fails, the ensuing burst of radiation would be significantly lessened — and less likely to cause further damage, thanks to the coolant system.
Generation IV nuclear power utilizes a system of fuel fabrication plants and reprocessing facilities that together overcome some of the shortcomings of the previous generations of nuclear power plants.
To be classified as Generation IV, a system must meet, or at least have the ability to meet, the following criteria:
(1) it is much more fuel-efficient than current plants;
(2) it is designed in such a way that severe accidents are not possible, that is, plant failure or an external event (such as an earthquake) should not result in radioactive material release to the outside world;
[3] the fuel cycle is designed in such a way that uranium and plutonium are never separated (“diverged”) but only present in a mix and with other elements. This makes it more difficult to create nuclear weapons.
Construction is underway on the new nuclear power plant in Tennessee, in the iconic city of Oak Ridge (famous for its importance in World War Two’s Manhattan Project).
Kairos Power has begun building the Hermes Low-Power Demonstration Reactor in Oak Ridge, the first Gen IV reactor approved for construction by the U.S. Nuclear Regulatory Commission. The Hermes reactor utilizes a fluoride salt-cooled, high-temperature reactor design, differing from conventional light-water reactors.
“Generation IV nuclear power plant designs are revolutionary, in that they are planned to use a very different set of technologies than the reactors we use today,” Ross Peel, a professor with King’s College London’s Centre for Science and Security Studies told Newsweek.
Unfortunately, we are behind China when it comes to the construction. It launched its construction of a Generation IV reactor late last year.
The Shidaowan nuclear power plant, which features the world’s first fourth-generation reactor, started commercial operations on December 6, China National Nuclear Corporation (CNNC), one of the project’s developers, said.
“China’s independently developed high-temperature gas-cooled reactor demonstrator commenced commercial operation,” CNNC said in a statement.
“It signifies that China has completed the world’s first commercially operational modular nuclear power plant with fourth-generation nuclear technology, marking the transition of fourth-generation nuclear technology from experiments to the commercial market.”
Interestingly, more and more countries are rethinking their ban on nuclear energy, likely in light of the realities of “green energy” as well as the improvements being made in the Generation IV systems. Switzerland, for example, has reversed its outright ban of nuclear.
The Swiss government said on Wednesday it plans to overturn a ban on building new power plants to strengthen local energy supply at a time of increased geopolitical tension.
Energy Minister Albert Roesti said the government would submit a proposal to amend nuclear legislation by the end of 2024 so it can be debated in parliament next year.
“Over the long term, new nuclear power plants are one possible way of making our supply more secure in a geopolitically uncertain time,” Roesti told a press conference.
Failure to retain the option could be seen as a betrayal by future generations, Roesti argued.
All of these are positive developments for those of us who enjoy the perks of civilization, such a light at night and heat during the winter.
via Watts Up With That?
September 2, 2024 at 08:03PM
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