External cost analysis of nuclear fuel cycle comparing direct disposal and pyroprocessing in Korea

Kim, Sung-Ki; Kim, Kwangrag; Kim, Jinseop; Kim, Geonyoung; Cho, Dongkeun; Bang, Sungsig

doi:10.1016/j.pnucene.2022.104480

Cited by 2 publications

(3 citation statements)

References 14 publications

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“…Under the same discount rate, there was no apparent discrepancy in the unit cost of the back end between the OTC and TTC strategies, even considering the external cost (The Boston Consulting Group for AREVA, 2006;Tang, 2021;Kim et al, 2022). Based on the whole nuclear fuel cycle, Taylor et al (2022) verified the approximate economics of the OTC and TTC strategies regarding the levelized cost of electricity (LCOE) attributed to the minor component of back-end costs.…”

Section: Pathway To Curb Carbon Emissions Based On the Nuclear Fuel C...mentioning

confidence: 82%

Critical review of nuclear power plant carbon emissions

Liu,

Peng,

et al. 2023

Front. Energy Res.

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Nuclear power plays a crucial role in achieving the target of carbon neutrality to build a sustainable society. However, it is not “carbon-free” when considering its entire life cycle. Therefore, accurate accounting and monitoring of its generated carbon emissions are required to avoid miscalculations of nuclear energy as a clean energy source. In this study, the life-cycle carbon emissions of nuclear power plants (NPPs) with different reactor types are reviewed. In addition to the characteristic differences among different reactors, disparities in the review results originate from the varying emissions at the respective stages of the nuclear fuel cycle, technology choices at each stage and accounting methods and boundaries. The carbon emissions resulting from NPP construction and operation are underestimated due to the limited data and methods, which creates uncertainty in the evaluation of NPP carbon emissions. An integrated framework for carbon emissions accounting considering the construction and operation of NPPs (CACO-NPP) is proposed. This integrated framework aims to improve the accounting accuracy for carbon emissions originating from NPPs. An emerging Generation III NPP with the latest technology, HPR1000 (an advanced pressurized water reactor), was adopted as a case study. The results show that the total emissions resulting from vegetation loss, equipment manufacturing and labor input during construction and operation are 1232.91 Gg CO2 with a carbon intensity of 1.31 g CO2/kWh, indicating the notable mitigation capability of Generation III NPPs. By combining the maturity of HPR1000 technology with successive design improvements, the carbon emissions of such reactor types could be further reduced. This development is very important for realizing China’s carbon neutrality target.

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Section: Pathway To Curb Carbon Emissions Based On the Nuclear Fuel C...mentioning

confidence: 82%

Critical review of nuclear power plant carbon emissions

Liu,

Peng,

et al. 2023

Front. Energy Res.

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“…𝑘T 𝛿T 𝑑𝑉 + ρ c 𝑇 𝛿𝑇𝑑𝑉 − 𝑞 𝛿𝑇𝑑𝑉 − 𝑞 𝑑𝑆 + 𝛿Π = 0 (4) The governing equation for the mechanical model is shown in Equation ( 2) and is mainly used to calculate shape changes due to plastic deformation. The governing equation can be used to calculate the contact area, internal stress, plastic deformation energy, friction, and heat generation.…”

Section: Simulation Processmentioning

confidence: 99%

“…However, resistance butt welding carries the risk of radioactive material leakage from the welded joint due to various factors, such as the presence of radioactive substances generated by uranium fission, foreign substances, or defects in the weld, as well as stress concentration caused by plastic deformation. Therefore, it is crucial to accurately understand the welding mechanism/phenomena and ensure the reliability of the welded joint through various soundness confirmation tests [4][5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Analysis of Foreign Substance Flow within the Weld Joint through Simulation in Pressurized Water Reactor Nuclear Fuel Rods

Kim

2023

Applied Sciences

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The welding of end plugs to cladding tubes is a critical process in the manufacture of pressurized water reactor (PWR) nuclear fuel rods. The resistance butt welding method is commonly used for this purpose in production. In this paper, we present an analysis of the flow of foreign substances within the weld joint during the tube-cap welding process of PWR nuclear fuel rods, using SORPAS 2D software. The welding process generates foreign substances such as oxide scales, welding fumes, and spatters, which can negatively impact the quality of the weld. Additionally, carbide-based ceramic materials with higher melting temperatures than the base metal have been found within the weld joint in some cases, which can also affect the quality of the weld. To simulate the intrusion of foreign substances with higher melting temperatures than the base material (zirconium alloy) during welding, we conducted a simulation and analyzed the flow of foreign substances. Based on this study, we expected to enhance the reliability and stability of the tube-cap welding process of PWR nuclear fuel rods.

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External cost analysis of nuclear fuel cycle comparing direct disposal and pyroprocessing in Korea

Cited by 2 publications

References 14 publications

Critical review of nuclear power plant carbon emissions

Critical review of nuclear power plant carbon emissions

Analysis of Foreign Substance Flow within the Weld Joint through Simulation in Pressurized Water Reactor Nuclear Fuel Rods

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