tailieunhanh - Development of an equilibrium loading pattern and whole-core fuel performance assessment in the Advanced Boiling Water Reactor (ABWR) with UO2 and U3Si2 fuels

The Advanced Boiling Water Reactor (ABWR) is an established evolutionary water reactor that has successfully achieved design certification in a number of countries. However, core design information is scarce in the open literature and this makes studying the suitability of new fuel types difficult and complicates comparisons with other reactor systems. | Progress in Nuclear Energy 117 2019 103053 Contents lists available at ScienceDirect Progress in Nuclear Energy journal homepage locate pnucene Development of an equilibrium loading pattern and whole-core fuel T performance assessment in the Advanced Boiling Water Reactor ABWR with UO2 and U3Si2 fuels Aiden Peakman Christopher Grove Kerr Fitzgerald Robert Gregg National Nuclear Laboratory Chadwick House Warrington WA3 6AE UK ARTICLE INFO ABSTRACT Keywords The Advanced Boiling Water Reactor ABWR is an established evolutionary water reactor that has successfully Boiling water reactor achieved design certification in a number of countries. However core design information is scarce in the open Loading pattern optimisation literature and this makes studying the suitability of new fuel types difficult and complicates comparisons with U3Si2 other reactor systems. This study therefore aimed to address important data gaps in the open literature relating Simulated annealing to the latest generation of BWR core designs. Furthermore this paper describes an assessment which has been Nuclear reactors Fuel performance carried out comparing the performance of U3Si2 and standard UO2 fuel deployed in the ABWR. An ABWR core design model has been created using the reactor physics software package CASMO-SIMULATE with the method used to develop the model and the key set of parameters employed to determine the viability of the core design detailed. A major part of the optimisation process involves the application of simulated annealing to generate loading pattern candidates. Whilst simulated annealing has been employed routinely in loading pattern optimisation one of the novel aspects in this study relates to each candidate adhering to a predetermined batch map to develop a viable equilibrium loading pattern. NNL s whole-core fuel performance framework NEXUS which utilises ENIGMA as the fuel performance en- gine was used in conjunction with the developed core model to .

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