Study on the direct measurement method for trace plutonium in samples from spent fuel reprocessing
September 2025
To directly, rapidly, and accurately measure trace plutonium in reprocessing samples, two α scintillation counters were developed for the direct measurement of liquids and solids after source preparation....
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Research on temperature composite control system for radioactive waste incineration equipment
September 2025
This paper presents a multi-mode control scheme for the temperature regulation of radioactive waste incineration equipment, integrating modern and fuzzy control theories. Separate controllers were designed...
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Study on the method of measuring the interface of radioactive liquid by air blowing
September 2025
Aiming at the interfacial measurement method of radioactive liquids, we propose and validate a program to realize the interfacial measurement of radioactive liquids by using the air blowing method....
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Research on container for high-level radioactive waste vitrification product
September 2025
Product containers for high-level radioactive waste liquid vitrified glass are critical components for ensuring continuous and stable operation of vitrification plants. Given the substantial demand...
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Vibration response simulation of centrifuge excited by liquid medium based on SPH-FEM
September 2025
A coupled Smoothed Particle Hydrodynamics-Finite Element Method (SPH-FEM) framework is implemented to study flow-induced vibration problems of a decanter centrifuge drum under operational conditions....
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Research on skin dose assessment methods after severe accidents in nuclear power plants
September 2025
In the event of a severe accident at the nuclear power plant, the radioactive plume can cause external immersion exposure and deposition exposure to the skin. The predominant code utilized for estimating...
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Impact of revised RG 1.183 on source terms and radiological consequences of rod ejection accident for the HRP1000 reactor
September 2025
This paper compares and analyzes the impact of the revised RG 1.183 on the source term and radioactive consequences of the rod ejection accident. The revision of RG 1.183 has resulted in changes to...
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Research on fluid-structure interaction of spent fuel storage and transportation basket
September 2025
The structural form of the spent fuel storage and transportation basket is different from that of the traditional rack, and the FSI parameters depend on the structural form. It is uncertain whether...
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Design and research of an online continuous monitoring instrument for Iodine-129 in reprocessing facilities
September 2025
This paper presents the design of an I-129 online continuous monitor based on the I-129 measurement scenario in the reprocessing plant, the characteristics of the NaI(Tl) crystal, the results of MCNP...
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Research for radiological consequence analysis for extended design case of multiple SGTR accidents
September 2025
In order to verify that the multiple heat transfer tubes rupture of steam generator (SGTR) in the third-generation passive nuclear power plants which use light water as coolant and moderator (TPLWNPPs)...
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Research on radiological consequences analysis of reactor control rod ejection accident based on peak radial average fuel enthalpy rise
September 2025
The fission products residing in the fuel rod void volume (plenum and pellet-to-cladding gap) are available for release upon cladding breach, and the fission products release fraction is a key parameter...
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Vibration-absorbing design and comparing research on spent fuel transport cask
September 2025
The safe transportation of spent fuel is an important part of the sustainable development of nuclear power industry, the research and independent design of spent fuel transport cask is particularly...
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Study on the evolution and collection characteristics of droplet impact on a collector under space conditions
September 2025
The Liquid Droplet Radiator (LDR) exhibits superior specific thermal radiation capacity, yet its performance is hindered by droplet splashing and subsequent loss during high-speed collisions with the...
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Dynamic analysis of cold end accident conditions for a space gas-cooled reactor coupled with He–Xe brayton cycle system
September 2025
Space nuclear power systems are promising for deep space missions. As the critical component of the space nuclear power system, radiators' performance significantly impacts both the cycle efficiency...
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Simulation study of steam flow behavior and piping mechanical response analysis in safety valve discharge pipes with fluid-structure interaction
September 2025
This study numerically simulates the steam flow behavior and piping mechanical response within the safety valve discharge piping of a nuclear power system. A one-way Fluid-Structure Interaction (FSI)...
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Maintainable container loader with high repeatability positioning accuracy for use in hot cell
Available online 7 July 2025
In the hot cell, the hermetically sealed transport container must be transferred across multiple workstations prior to placement into the storage well. The minimal clearance between the outer wall of...
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A study on data analysis utilizing the K-edge absorption spectroscopy in mixed thorium and uranium solutions
June 2025
X-ray absorption spectroscopy stands as a non-destructive assay technique commonly employed in nuclear fuel reprocessing plants to analyze the concentration of elements such as uranium, plutonium,thorium.The...
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Research on applicability of containment test data for HPR1000 based on phenomena scaling
June 2025
The volume of the nuclear power plant containment is huge, making it difficult to conduct equal-scale or large-scale thermal-hydraulic tests. Currently the test data mainly come from small-scale tests....
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A general two-group constants estimator for 17x17 PWR assembly configurations using artificial neural networks
June 2025
In this study, a preliminary general two-group constants predictor using artificial neural networks (ANNs) for pressurized water reactor (PWR) based assembly designs is established. Users can input...
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Characteristics of aerosol release from fuel cladding breakage in lead-bismuth reactors
June 2025
Lead-bismuth reactors are the most promising type among the fourth-generation reactors. When the reactor operates for a long time, the fuel cladding may develop small breaches due to high temperatures...
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Research on fault diagnosis method for nuclear power plants rotating machinery based on MoCo Siamese neural network
June 2025
Rotating machinery is a kind of significant equipment that widely used in nuclear power plants (NPPs). The harsh operating environment and long-term continuous operation of the rotating machinery can...
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Validation and sensitivity analysis of the FLEXPART model using the Kincaid experiment data
June 2025
FLEXPART, a Lagrangian particle dispersion model, is widely used in atmospheric dispersion and nuclear emergency response studies. However, a systematic sensitivity analysis of this model is still lacking....
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Study on prediction model of nitrogen oxide concentration in reprocessing plant based on random forest
June 2025
During the spent fuel reprocessing process, nitrogen oxides (NOx) gases are generated. The treatment and emission control of NOx rely on measurements from instrumentation. In situations where operating...
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Numerical simulation study on oxygen transport in the natural circulation process of liquid lead–bismuth eutectic
June 2025
The lead-cooled fast reactor uses liquid lead–bismuth eutectic (LBE) as the coolant. In accident conditions, a passive cooling system is used to remove the heat from the reactor core to avoid meltdown....
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Multi-objective optimization of 200 kW air centripetal turbine based on artificial neural networks
June 2025
The air-Brayton cycle has the characteristics of safety and high efficiency, which can be used as an energy conversion system for mobile small reactors. The air turbine is one of the key components...
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