Atomic Energy最新文献_第8页

Calculation and experimental analysis of BN-800 neutron-physical characteristics during the transition to mixed oxide fuel loading 过渡到混合氧化物燃料装载期间 BN-800 中子物理特性的计算和实验分析

IF 0.4 4区工程技术

Atomic Energy Pub Date : 2024-06-10 DOI: 10.1007/s10512-024-01074-y

D. A. Klinov, M. Yu. Semenov, G. M. Mikhailov, A. A. Peregudov, V. A. Mishin, N. V. Solomonova, A. N. Kryukov, M. R. Farakshin, S. B. Belov, A. E. Kuznetsov, V. N. Ignatiev, G. Yu. Dubova

{"title":"Calculation and experimental analysis of BN-800 neutron-physical characteristics during the transition to mixed oxide fuel loading","authors":"D. A. Klinov, M. Yu. Semenov, G. M. Mikhailov, A. A. Peregudov, V. A. Mishin, N. V. Solomonova, A. N. Kryukov, M. R. Farakshin, S. B. Belov, A. E. Kuznetsov, V. N. Ignatiev, G. Yu. Dubova","doi":"10.1007/s10512-024-01074-y","DOIUrl":"10.1007/s10512-024-01074-y","url":null,"abstract":"<div><p>The BN-800 reactor with a hybrid core has been in commercial operation in Russia since 2016. During the initial period, the layout of the hybrid core was constantly changed, including variations in the ratios of fuel assemblies with uranium and mixed oxide fuel, as well as the number of fuel assemblies in medium and high enrichment zones. In 2021, the transition of the BN-800 core to full mixed oxide fuel loading began. The transition was carried out in stages: during the reloading period, fuel assemblies with mixed oxide fuel (one third of the total amount of fuel assemblies in the core) was loaded into the core. In 2022, the reactor was brought to its minimum controlled power level at full mixed oxide fuel loading. During BN-800 operation, a large amount of experimental data on the main neutron-physical characteristics of the core has been accumulated. The adequacy of the computational prediction of the BN-800 neutron-physical characteristics was confirmed by comparing the neutron-physical values. The experimental results were evaluated using a set of critical BFS assemblies for modeling the reactor core. A comparative analysis of calculated values between the neutron-physical characteristics, which were obtained by various calculation codes within the framework of a reactor operation support, and the experimental data, was carried out.</p></div>","PeriodicalId":480,"journal":{"name":"Atomic Energy","volume":"135 1-2","pages":"1 - 11"},"PeriodicalIF":0.4,"publicationDate":"2024-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141363839","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Influence of the composition and burnup of accident-tolerant fuel on the fuel component of NPP electricity cost 耐事故燃料的成分和燃耗对核电厂电力成本中燃料部分的影响

IF 0.4 4区工程技术

Atomic Energy Pub Date : 2024-06-10 DOI: 10.1007/s10512-024-01088-6

E. V. Semenov, V. V. Kharitonov

引用次数: 0

Determination of the dose rate from the pulse-height spectra of an airborne gamma-ray spectrometer based on an unmanned aerial vehicle 从基于无人飞行器的机载伽马射线光谱仪的脉冲高度谱图确定剂量率

IF 0.4 4区工程技术

Atomic Energy Pub Date : 2024-06-10 DOI: 10.1007/s10512-024-01084-w

S. L. Gavrilov, A. E. Pimenov, A. M. Shvedov, D. V. Aron, S. V. Dyakov

引用次数: 0

Prospects for application of robotics and digitalization in integral critical experiments at compact assembly machines 机器人技术和数字化在紧凑型装配机整体关键实验中的应用前景

IF 0.4 4区工程技术

Atomic Energy Pub Date : 2024-06-10 DOI: 10.1007/s10512-024-01077-9

S. A. Andreev, S. Yu. Kasyanov

引用次数: 0

External and internal ignition of a hydrogen-air gas mixture induced by a recombiner 重组器诱导氢气-空气混合物的外部和内部点火

IF 0.4 4区工程技术

Atomic Energy Pub Date : 2024-06-10 DOI: 10.1007/s10512-024-01087-7

E. V. Bezgodov, S. D Pasyukov, M. V. Nikiforov, A. A. Tarakanov, I. A. Popov, DL Moshkin, U. F. Davletchin, V. A. Simonenko, I. A. Kirillov, S. G. Kalyakin, M. K. Sedov

{"title":"External and internal ignition of a hydrogen-air gas mixture induced by a recombiner","authors":"E. V. Bezgodov, S. D Pasyukov, M. V. Nikiforov, A. A. Tarakanov, I. A. Popov, DL Moshkin, U. F. Davletchin, V. A. Simonenko, I. A. Kirillov, S. G. Kalyakin, M. K. Sedov","doi":"10.1007/s10512-024-01087-7","DOIUrl":"10.1007/s10512-024-01087-7","url":null,"abstract":"<div><p>During their initial development, passive autocatalytic hydrogen recombiners (PARs) were presumed to operate in a flameless mode. However, a series of independent experiments conducted in the 1990s observed hydrogen-air gas mixtures igniting as a result of PAR operation. This ignition was due to overheating of the catalyst, leading to the thermal ignition of hydrogen-air mixtures (termed “internal ignition”). Additionally, individual particles may become detached from the catalyst substrate and swept up by the gas stream to subsequently ignite the gas mixture outside the recombiner housing, a phenomenon known as “external ignition.” This article delves into the experimental findings concerning two mechanisms of hydrogen-air mixture ignition. Direct evidence for recombiner-induced external ignition was captured using the Schlieren method. It was confirmed that the concentration limits for external ignition differ from those for internal ignition. In order to ensure nuclear power plant safety, the development of a testing methodology for the technology used in manufacturing catalysts is essential.</p></div>","PeriodicalId":480,"journal":{"name":"Atomic Energy","volume":"135 1-2","pages":"97 - 106"},"PeriodicalIF":0.4,"publicationDate":"2024-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141364532","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Research of the influence of the feed solution flow rate on the uranium refining in an extraction column cascade 研究进料溶液流速对萃取柱级联铀精炼的影响

IF 0.4 4区工程技术

Atomic Energy Pub Date : 2024-06-10 DOI: 10.1007/s10512-024-01079-7

A. O. Ushakov, I. I. Zherin, A. V. Muslimova, M. D. Noskov

引用次数: 0

Analysis of charged particle flows in the interelectrode gap of an ion-optical system 离子光学系统电极间隙中的带电粒子流分析

IF 0.4 4区工程技术

Atomic Energy Pub Date : 2024-06-10 DOI: 10.1007/s10512-024-01085-9

I. M. Mamedov, S. P. Maslennikov

引用次数: 0

Increasing the operational stability of a vacuum neutron tube ion source 提高真空中子管离子源的运行稳定性

IF 0.4 4区工程技术

Atomic Energy Pub Date : 2024-06-10 DOI: 10.1007/s10512-024-01083-x

S. P. Maslennikov, I. M. Mamedov

引用次数: 0

Correction to: Reduction of the Systematic Error of the Monte Carlo Method in MCU-Aided Calculations of Nuclear Reactors 更正减少核反应堆 MCU 辅助计算中蒙特卡罗方法的系统误差

IF 0.4 4区工程技术

Atomic Energy Pub Date : 2024-06-06 DOI: 10.1007/s10512-024-01090-y

R. B. Bahdanovich, A. S. Gerasimov, G. V. Tikhomirov

引用次数: 0

Response matrix simulation for a fast neutron spectrometer based on an organic scintillator 基于有机闪烁体的快中子光谱仪的响应矩阵模拟

IF 0.4 4区工程技术

Atomic Energy Pub Date : 2024-06-03 DOI: 10.1007/s10512-024-01082-y

R. F. Ibragimov, I. V. Urupa, E. V. Ryabeva

{"title":"Response matrix simulation for a fast neutron spectrometer based on an organic scintillator","authors":"R. F. Ibragimov, I. V. Urupa, E. V. Ryabeva","doi":"10.1007/s10512-024-01082-y","DOIUrl":"10.1007/s10512-024-01082-y","url":null,"abstract":"<div><p>The work describes features of the procedure for obtaining a response matrix to neutron radiation with energies from 1 to 19 MeV for a single-crystal stilbene scintillation detector. This response matrix is subsequently used in solving the problem of unfolding the neutron energy distribution at the detector location. The procedure for obtaining the matrix includes both experimental work and simulations of nuclear physics processes. In order to carry out the simulations, the Geant4 library package with the connected optical physics accounting module was used. The resulting matrix can be used as part of the amplitude method for unfolding the spectra of neutrons with energies in the range of 1–19 MeV with a step of 0.1 MeV. The obtained response matrix takes into account the main physical processes and instrumental effects of detectors based on organic scintillators, including the dependence of the light yield in the scintillator on the type and energy of charged particles, as well as the energy resolution of the detector depending on the energy of detected particles. In comparison with earlier results obtained using response matrices that do not take into account the above formation features of hardware spectra, it was possible to reduce the lower limit of the detected neutron energy from 1.5 to 1.0 MeV, as well as to increase the reliability of unfolded neutron energy distributions at the measurement point. The error in determining the neutron energy in the range of 1–15 MeV was not more than 200 keV.</p></div>","PeriodicalId":480,"journal":{"name":"Atomic Energy","volume":"135 1-2","pages":"61 - 68"},"PeriodicalIF":0.4,"publicationDate":"2024-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141259918","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0