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Nuclear decommissioning is the administrative and technical process leading to the irreversible closure of a nuclear facility such as a nuclear power plant (NPP), a research reactor, an isotope production plant, a particle accelerator, or uranium mine. It refers to the administrative and technical actions taken to remove all or some of the ...
A project to build a first-of-a-kind small modular nuclear reactor power plant was terminated Wednesday, another blow to the Biden administration's clean energy agenda following cancellations last ...
The nuclear reactors at the Barsebäck Nuclear Power Plant were shut down between 1999 and 2005. In October 2015, corporations running the nuclear plants decided to phase out two reactors at Oskarshamn [92] and two at Ringhals, [93] reducing the number of remaining reactors from 12 in 1999 to 6 in 2020.
Taking decades, an intricate clean-up process has to be followed after a nuclear power station closes.
Not all of the heat in a nuclear reactor is generated by the chain reaction that a scram is designed to stop. For a reactor that is scrammed after holding a constant power level for an extended period (greater than 100 hrs), about 7% of the steady-state power will remain after initial shutdown due to fission product decay that cannot be stopped.
In 2019, the Clinch River Nuclear Site was the first small modular reactor project to get an early site permit from the Nuclear Regulatory Commission, giving TVA the all-clear to move towards ...
A fission fragment reactor is a nuclear reactor that generates electricity by decelerating an ion beam of fission byproducts instead of using nuclear reactions to generate heat. By doing so, it bypasses the Carnot cycle and can achieve efficiencies of up to 90% instead of 40–45% attainable by efficient turbine-driven thermal reactors.
Nuclear reactors generate heat internally; to remove this heat and convert it into useful electrical power, a coolant system is used. If this coolant flow is reduced, or lost altogether, the nuclear reactor's emergency shutdown system is designed to stop the fission chain reaction. However, due to radioactive decay, the nuclear fuel will ...