Sodium-cooled Fast Reactors (SFRs)

Ohshima, Hiroyuki; Kubo, S.

doi:10.1016/b978-0-12-820588-4.00006-2

Cited by 3 publications

(1 citation statement)

References 29 publications

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“…However, the distinctive feature of the SFR lies in its ability to use liquid sodium as a coolant, maintaining a temperature range from 530°С to 550°С at atmospheric pressure. The uniqueness of this approach lies in the reactor's capability to work with various types of fuels, including both oxide and metal fuels, making it more versatile in application and operation (Ohshima & Kubo, 2023). It is worth noting that Japan has been utilizing SFR at the Monju Nuclear Power Plant for an extended period (Fig.…”

Section: Fast Neutron Reactor With Gas Coolingmentioning

confidence: 99%

Research and analysis of new generation nuclear reactors in the world

Malogulko,

Sikorska,

Teptia

et al. 2023

Tehnìka ta energetika

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The research of new nuclear reactors is gaining urgent importance worldwide due to the need for continuous improvement of technologies to ensure safety, efficiency, and emissions reduction. This is crucial in the context of climate change and rapid technological development, which demand constant updating and improvement of nuclear energy. The objective of the study was to analyse next-generation reactors worldwide and identify their advantages and potential prospects for the future. The research utilized statistical, comparative, and analytical methods. The results of the analysis considered contemporary technological and safety parameters related to the operation of such reactors, including their ability to optimize fuel usage, enhance operational safety, and effectively manage radioactive waste. As a result of the study, fourth-generation nuclear reactors were analysed, including fast neutron reactors using gas cooling, very high-temperature reactors, reactors using sodium as a coolant, fast neutron reactors with lead cooling, reactors where the reaction occurs in molten salt, and supercritical water-cooled reactors. Each of these reactors has its unique features that make them distinctive in their application. For example, gas-cooled reactors have high productivity due to their ability to achieve high temperatures without significant pressure. On the other hand, molten salt reactors offer flexibility in using different types of fuel, including spent fuel, and can help reduce the level of radioactive waste through the use of special materials. During the analysis, it was noted that fourth-generation reactors, using various cooling and reaction-slowing technologies, are characterized by high efficiency, low accident risk, and the ability to produce stable electricity. Improved methods of reaction control open up new possibilities for the efficient production of electricity and increased safety in nuclear energy. The practical significance of the research lies in the opportunity to enhance modern electricity production technologies and ensure greater safety and efficiency in the field of nuclear energy

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Section: Fast Neutron Reactor With Gas Coolingmentioning

confidence: 99%

Research and analysis of new generation nuclear reactors in the world

Malogulko,

Sikorska,

Teptia

et al. 2023

Tehnìka ta energetika

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Improved correlations of the fuel/cladding liquid penetration rate with the out-of-pile transient database

Shu,

Miao,

Oaks

et al. 2024

Nuclear Engineering and Design

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2023

machinery

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The relevance of developing analytical methods for studying the stability of root crop cleaners on tractors is determined by the need to improve the efficiency and quality of root crop head cleaning, as this affects the quality of the final product and its marketable properties. The research aims to increase the stability of the cleaner movement by constructing a mathematical model of its oscillatory motion in the longitudinal-vertical plane and its numerical solution to determine the influence of parameters in response to external disturbances. To achieve this goal, a new theory of the movement of a root crop head cleaner in the longitudinal-vertical plane, mounted behind a wheeled tractor, under the influence of the disturbing effect of irregularities in the longitudinal profile of the soil surface on the amplitude and phase frequency characteristics of its angular oscillations was developed. Using numerical calculations carried out on a personal computer, the conditions were found under which the stability of the cleaner's movement in the specified plane will increase when the stiffness coefficient of the pneumatic tyres of the doubler wheels is 315 kN•m -1 .• This result is achieved when the pressure in the pneumatic wheel tyres is 135 kPa. As for the damping characteristics of the doubler wheel tyres, which are determined by the coefficient μ, it was found that when it changes from 350 N•s•m -1 to 1350 N•s•m -1 , there is an invariance of the delay in the reaction of the cleaner to the disturbing effect when its frequencies change from 0 to 24 s -1 . It was also found that the influence of the geometric dimensions of the cleaner is insignificant in the range of frequencies of oscillations of the ordinates of the longitudinal profile of soil surface irregularities from 0 to 24 s -1 . This follows from the nature of changes in the obtained amplitude-frequency and phase-frequency characteristics. The methodology for constructing a mathematical model of the plane-parallel oscillatory motion of the cleaner can be used in similar analytical studies of other agricultural machines mounted on a wheeled aggregating tractor

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Sodium-cooled Fast Reactors (SFRs)

Cited by 3 publications

References 29 publications

Research and analysis of new generation nuclear reactors in the world

Research and analysis of new generation nuclear reactors in the world

Improved correlations of the fuel/cladding liquid penetration rate with the out-of-pile transient database

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