Small Modular Reactors

Bài viết "Tính toán sơ bộ thủy nhiệt lò phản ứng mô đun nhỏ dựa trên công nghệ lò phản ứng ACPR50S" trình bày các kết quả tính toán sơ bộ về thủy nhiệt cho lò phản ứng mô đun nhỏ (SMR - Small modular reactor) với công suất nhiệt 200 MW dựa trên công nghệ lò phản ứng ACPR50S (Advanced customer-friendly practicable reliable 50 MWe compact SMR).

5p kimphuong1128 20-09-2023 7 3   Download

The natural convection method is used in many advanced nuclear reactors, such as Generation IV and Small Modular Reactors to improve the safety and reliability. In order to investigate the natural circulation (NC) behavior in A NuScale Power Module Reactor, a numerical study on the NC in primary system for such kind of reactor was obtained by using RELAP5.

10p vicedric 08-02-2023 5 3   Download

This work addresses the conceptual design of a submerged nuclear power plant, where a horizontal cylindrical hull, placed on the floor of a sea or an artificial lake, hosts an integral pressurized Small Modular Reactor (SMR).

10p vironald 15-12-2022 12 4   Download

If international agreements regarding the need to significantly reduce greenhouse gas emissions are to be met then there is a high probability that the shipping industry will have to dramatically reduce its greenhouse gas emissions.

11p vironald 15-12-2022 8 4   Download

Early versions of artificial neural networks’ ability to learn from data based on multivariable statistics and optimization demanded high computational performance as multiple training iterations are necessary to find an optimal local minimum.

8p vironald 15-12-2022 9 3   Download

This paper presents the conceptual design of a 300 MWt small modular reactor (SMR) using fuel assemblies of the AP1000 reactor. Numerical calculations have been performed to evaluate a proper active core size and core loading pattern using the SRAC code system and the JENDL-4.0 data library.

6p trinhthamhodang1218 14-03-2021 13 2   Download

The paper will present background information on exergy theory; identify the core subsystems in an SMR plant coupled with storage systems in support of renewable energy and hydrogen production; perform a thermodynamic exergy analysis; determine the cost allocation among these subsystems; and calculate unit exergetic costs, unit exergoeconomic costs, and first and second law efficiencies.

10p christabelhuynh 30-05-2020 20 1   Download

According to the OECD/NEA estimates, nuclear power plants (NPPs), whether with a large reactor or with small modular reactors (SMRs), are competitive with many other electricity generation technologies in a significant number of cases, one of the exceptions being natural gas in the USA with the current level of prices. However, SMRs have particular features and requirements setting conditions for their deployment. This paper presents the preliminary analysis by OECD/NEA of the economics, opportunities, and market for small nuclear reactors.

6p minhxaminhyeu5 30-06-2019 12 0   Download

In this study, new cladding material to withstand high temperature steam in addition to the fuel mechanical and safety behavior is investigated. The steam temperature was found to depend on the thermal and mechanical characteristics of the fuel. The SWR showed a very different transient behavior compared with a boiling water reactor.

12p minhxaminhyeu5 30-06-2019 8 0   Download

This research also introduces a supplementary reactivity control mechanism using stainless steel as mechanical shim (MS) rod to obtain the criticality during normal operation. A further analysis is performed to investigate the local power peaking of the CSBA-loaded FA at MS-rodded condition. Moreover, a simple B4C-based control rod arrangement is proposed to assure a sufficient shutdown margin even at the cold-zero-power condition.

8p minhxaminhyeu3 12-06-2019 9 1   Download

Self-pressurization analysis of the natural circulation integral nuclear reactor through a new dynamic model is studied. Unlike conventional pressurized water reactors, this reactor type controls the system pressure using saturated coolant water in the steam dome at the top of the pressure vessel. Selfpressurization model is developed based on conservation of mass, volume, and energy by predicting the condensation that occurs in the steam dome and the flashing inside the chimney using the partial differential equation.

11p minhxaminhyeu3 25-06-2019 20 1   Download

The purpose of this study is to investigate whether an SMR would have enough control rod worth to compensate for large reactivity feedback. The investigation begins with classification of reactivity and completes an analysis of the reactivity balance in each reactor state for the SMR model.

6p minhxaminhyeu3 25-06-2019 9 1   Download