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International Conference on Applied Superconductivity and Electromagnetic Devices, ASEMD

作者： Yu Hua Cheng Li Bing Bai Fan Yang Yi Fan Chen Shen Hua Jiang Chun Yin School of Automation Engineering University of Electronic Science and Technology of China Chengdu China NDT Nuclear Power Institute of China Chengdu China CNNP Nuclear Power Operations Management Co. Ltd. Qinshan China

ISBN: (纸本)9781467381086

Stainless steel is widely used in nuclear plant. The stainless steel weld (SSW) defects are threat for reliability of a structure. To prevent these failures, eddy current pulsed thermography (ECPT) is proposed for defects detection, which indicates defects by hot spot caused by high resistivity of defects. A series of verified experiments are conducted to detect various SSW defects. The independent component analysis (ICA) is also utilized to remove the influence of weld inhomogeneity and enhance the defect information.

关键词： Eddy currents Welding Steel Heating Independent component analysis Nonhomogeneous media Testing

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High-resolution boosted reconstruction of γ-ray spectra

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nuclear Science and Techniques 2014年第5期25卷 16-22页

作者：李磊庹先国刘明哲王俊 State Key Laboratory of Geohazard Prevention and Geoenvironment Protection Chengdu University of Technology Nuclear Technology and Automation Engineering Institute Chengdu University of Technology Key Subject Laboratory of National Defense for Radioactive Waste and Environmental Security Southwest University of Science and Technology

Direct demodulation method(DDM) was applied to reconstruct γ-ray spectra. Boosted Richardson-Lucy iteration was introduced into DDM. Monte Carlo method(here GEANT 4) was proposed to calibrate response function and establish response matrix. First, gauss function was regarded as total energy peak. Spectra line was simulated with nine gauss functions. And afterwards DDM was applied to reconstruct the simulated spectra line and determine peak positions and areas. Compared with original spectra, for case that peak position interval was about 1/3 full width half maximum(FWHM), the error of rebuilding peak position was 2 channels. The rest of peaks could be searched accurately. The relative errors of all peaks' area were less than 4%. Then, three key factors, including noise, background, response matrix, were discussed. Finally, DDM was applied to calibrate the field NaI gamma spectrometer. The errors of U, Th, K were less than 5%. Comprehensive studies have shown that it is feasible to reconstruct gamma-ray spectra with DDM. DDM can significantly pseudo-improve energy resolution of gamma spectrometer, effectively decompose doublets whose peak potential interval is1/3 FHWM, and accurately search peak and calculate areas. DDM can restrain noise strongly but is greatly influenced by background. And DDM can improve the accuracy of qualitative and quantitative analysis in combination with the conventional spectrum analysis method.

关键词：高分辨率线谱伽玛能谱仪蒙特卡罗方法相对误差频谱分析方法 DDM 响应矩阵

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Author Correction: The challenge of mapping the human connectome based on diffusion tractography

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Nature communications 2019年第1期10卷 5059页

作者： Klaus H Maier-Hein Peter F Neher Jean-Christophe Houde Marc-Alexandre Côté Eleftherios Garyfallidis Jidan Zhong Maxime Chamberland Fang-Cheng Yeh Ying-Chia Lin Qing Ji Wilburn E Reddick John O Glass David Qixiang Chen Yuanjing Feng Chengfeng Gao Ye Wu Jieyan Ma Renjie He Qiang Li Carl-Fredrik Westin Samuel Deslauriers-Gauthier J Omar Ocegueda González Michael Paquette Samuel St-Jean Gabriel Girard François Rheault Jasmeen Sidhu Chantal M W Tax Fenghua Guo Hamed Y Mesri Szabolcs Dávid Martijn Froeling Anneriet M Heemskerk Alexander Leemans Arnaud Boré Basile Pinsard Christophe Bedetti Matthieu Desrosiers Simona Brambati Julien Doyon Alessia Sarica Roberta Vasta Antonio Cerasa Aldo Quattrone Jason Yeatman Ali R Khan Wes Hodges Simon Alexander David Romascano Muhamed Barakovic Anna Auría Oscar Esteban Alia Lemkaddem Jean-Philippe Thiran H Ertan Cetingul Benjamin L Odry Boris Mailhe Mariappan S Nadar Fabrizio Pizzagalli Gautam Prasad Julio E Villalon-Reina Justin Galvis Paul M Thompson Francisco De Santiago Requejo Pedro Luque Laguna Luis Miguel Lacerda Rachel Barrett Flavio Dell'Acqua Marco Catani Laurent Petit Emmanuel Caruyer Alessandro Daducci Tim B Dyrby Tim Holland-Letz Claus C Hilgetag Bram Stieltjes Maxime Descoteaux Division of Medical Image Computing German Cancer Research Center (DKFZ) Heidelberg 69120 Germany. k.maier-hein@dkfz.de. Division of Medical Image Computing German Cancer Research Center (DKFZ) Heidelberg 69120 Germany. Sherbrooke Connectivity Imaging Lab (SCIL) Université de Sherbrooke Sherbrooke QC J1K 0A5 QC Canada. Department of Intelligent Systems Engineering School of Informatics and Computing Indiana University Bloomington IN 47408 USA. Krembil Research Institute University Health Network Toronto Canada M5G 2C4. Department of Neurological Surgery University of Pittsburgh School of Medicine Pittsburgh PA 15213 USA. IMT-Institute for Advanced Studies Lucca 55100 Italy. Department of Diagnostic Imaging St. Jude Children's Research Hospital Memphis TN 38105 USA. University of Toronto Institute of Medical Science Toronto Canada M5S 1A8. Institute of Information Processing and Automation Zhejiang University of Technology Hangzhou 310023 Zhejiang China. United Imaging Healthcare Co Shanghai 201807 China. Shanghai Advanced Research Institute Shanghai 201210 China. Laboratory of Mathematics in Imaging Harvard Medical School Boston MA 02215 USA. Center for Research in Mathematics Guanajuato 36023 Mexico. PROVIDI Lab Image Sciences Institute University Medical Center Utrecht Utrecht 3508 The Netherlands. Cardiff University Brain Research Imaging Centre School of Psychology Cardiff University Maindy Road Cardiff CF24 4HQ UK. Department of Radiology University Medical Center Utrecht Utrecht 3508 The Netherlands. Centre de recherche institut universitaire de geriatrie de Montreal (CRIUGM) Université de Montréal Montreal QC Canada H3W 1W5. Sorbonne Universités UPMC Univ Paris 06 CNRS INSERM Laboratoire d'Imagerie Biomédicale (LIB) 75013 Paris France. Center for Advanced Research in Sleep Medicine Hôpital du Sacré-Coeur de Montréal Montreal Canada H4J 1C5. Neuroimaging Unit Institute of Bioimaging and Molecular Physiology (IBFM) Nat

An amendment to this paper has been published and can be accessed via a link at the top of the paper.

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Corrigendum to “Compatibilities and interfacial diffusions between U-10Zr alloy and Zircaloy-4 alloy” [J. Nucl. Mater. 473 (2016) 223–228]

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Journal of nuclear Materials 2016年 477卷 318-318页

作者： Yunming Liu Fu Wang Haitao Liu Wenbin Xiong Hui Wang Qianfu Pan Yuting Zhang Ce Ma Pengcheng Zhang National Key Laboratory for Nuclear Fuel and Materials Nuclear Power Institute of China Chengdu 610041 China School of Material Science and Engineering Southwest University of Science and Technology Mianyang 621010 Sichuan China State Key Laboratory of Rolling and Automation Northeastern University Shenyang 110819 China Nuclear and Radiation Safety Center Ministry of Environmental Protection NO. 54 Hong Lian Nan Cun Haidian P.O. Box 8088 Beijing 100082 China Science and Technology on Surface Physics and Chemistry Laboratory P.O. Box No. 9-35 Huafengxincun Jiangyou City Sichuan Province 621908 China

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Modelling and simulation of containment retention factor for can-type containment

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International Journal of nuclear Energy Science and technology 2014年第4期8卷 333-350页

作者： Mehboob, Khurram Park, Kwangheon Ahmed, Raheel COMSATS Institute of Information Technology Chack Shehzad Park Road Islamabad46000 Pakistan Department of Nuclear Engineering Kyung Hee University Yongin-si446-701 Korea Republic of College of Automation Harbin Engineering University 145-31 Nantong street Harbin150001 China

Severe accidents cause the failure of fission product barriers and allow the fission products to escape into the environment. The containment is the last barrier for fission products. Thus, containment spray system, heat removal system, recirculation filtration system, Containment Filtered Venting System (CFVS) and containment exhaust filtration system are installed in the containment to mitigate the exposure to environment. In this work, modelling and simulation of the Containment Retention Factor (CRF) have been carried out for the can-type PWR containment considering a 1000 MWe PWR. Computational modelling and simulation have been carried out by developing a kinetic code in MATLAB, which uses the containment-specific activity available after the accident. The kinetic dependency of CRF in terms of containment filtration systems and spray system with caustic and boric acid spray has been carried out. For noble gases, iodine and aerosols, the CRF increases with the increase in exhaust rate, while with the containment spray flow rate, the CRF for iodine first increases and then starts reducing with significant magnitude. © 2014 Inderscience Enterprises Ltd.

关键词： Aerosols

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Effect of anode inlet gas humidification on PEM water contents and current density distribution

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Huagong Xuebao/CIESC Journal 2015年 66卷 342-348页

作者： Wang, Xueke Wang, Shubo Pan, Yuan Xie, Xiaofeng Huang, Haiyan Zhu, Tong School of Mechanical Engineering and Automation Northeastern University ShenyangLiaoning110819 China Institute of Nuclear and New Energy Technology Tsinghua University Beijing100084 China State Key Laboratory of Automotive Safety and Energy Tsinghua University Beijing100084 China

A three dimensional model was proposed to study water transport phenomena in the membrane as well as the performance of PEMFC under various relative humidity(RH) of anode inlet gas. This model couples the conservation equations of the water concentration in membrane and the catalyst layer using a set of internal boundary conditions at the interface. The model was realized based on the COMSOL software and the simulated polarization curves are found in good agreement with the experiments thus confirming the validity of the model. The numerical results show that the humidification strongly influences the current density so as to affect the cell efficiency. Under low humidification conditions of anode inlet gas, the membrane current density below rib is greater than the gas flow channel, however, under the high humidity conditions, membrane current density distribution is uniform. Using thicker film, such as Nafion 117, the membrane of anode side has the potential of dehydration under high current density even if anode inlet gas be humidified. © All Right Reserved.

关键词： Anodes

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Design Considerations of Ad-Hoc Wireless Building Radiation Monitoring Network for nuclear Accident Emergency Response Applications

Design Considerations of Ad-Hoc Wireless Building Radiation ...

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2014 International Conference on Remote Sensing and Wireless Communications(RSWC 2014)

作者： HSUN-HUA TSENG HSIEN-I LIN TO-PO WANG TZU-CHEN HUNG Institute of Nuclear Energy Research (INER) Graduate Institute of Automation Technology National Taipei University of Technology Department of Electronic Engineering and Graduate Institute of Computer and Communication Engineering National Taipei University of Technology Department of Mechanical Engineering National Taipei University of Technology

Emergency response to complete(AC/DC power supply) blackout of nuclear Power Plant like what happened to Fukushima accident requires a battery-powered ad-hoc wireless personal area networks(WPANs) inside reactor buildings for precise tracking of workers' activity and radiation *** wireless technology and its underlying IEEE 802.15.4 standard is an attractive low-cost,low-power solution to fulfill above applications that require self-healing,fast and easy deployment,low data rate,long battery life,and secure *** this paper,a prototype system with real-time locating capability is designed on Radio-Pulse ZigBee Single Chip *** Location Engine implements a distributed computation algorithm that uses received signal strength indicator(RSSI)values from known reference nodes which are made up of ZigBee Coordinators(ZC)with known *** nodes are mobile radiation monitor called blind nodes or ZigBee End Device(ZED) which contains radiation detector and just enough functionality to talk to the ZC,whose coordinates need to be *** is demonstrated that by integrating radiation detector with ZigBee room-based position system(RBPS),both the real time radiation exposure as well as precise room ID based location of monitor can be achieved using multiple reference nodes within a range of 40-room 8 floor building.

关键词： Power ZigBee Design Considerations of Ad-Hoc Wireless Building Radiation Monitoring Network for nuclear Accident Emergency Response Applications

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Kinetic study of containment retention factor (CRF) for large dry containment under radiation load 22

Kinetic study of containment retention factor (CRF) for larg...

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2014 22nd International Conference on nuclear engineering, ICONE 2014

作者： Khurram, Mehboob Kwangheon, Park Rehan, Khan Majid, Ali Raheel, Ahmed COMSATS Institute of Information Technology Chack Shehzad Park Road Islamabad46000 Pakistan College of Nuclear Engineering Kyung Hee University Yongin-city446-701 Korea Republic of Islamabad46000 Pakistan Center of Energy Systems National University of Science and Technology H-12 Sector Islamabad46000 Pakistan College of Automation Harbin Engineering University Harbin150001 China

ISBN: (纸本)9780791845936

The nuclear Power Plants (NPPs) have been built on the concept of Defense in depth. The severe accident causes the failure of fission product barriers and let the fission products to escape into environment. The containment is the last barrier to the fission products. Thus, the containment is installed with engineering safety features (ESFs) i.e. spray system, heat removal system, recirculation filtration system;containment filtered venting system (CFVS), and containment exhaust filtration system. In this work, kinetic study of the containment retention factor (CRF) has been carried out for a large dry PWR containment considering 1000 MWe PWR. The computational modeling and simulation have been carried out by developing a kinetic code in MATLAB, which uses the fractions of activity airborne into the containment after the accident. The Kinetic dependency of CRF on containment filtration systems, spray system with caustic and boric acid spray has been carried out. For noble gases, iodine and aerosols, the CRF increases with the increase in exhaust rate. While, CRF for iodine first increases then start reducing with containment spray flow rate. The Kinetic dependency of CRF has also been studied for boric and caustic spray.. Copyright © 2014 by ASME.

关键词： Aerosols

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The Space Distributions of Platinum Group Elements of the No.2 Ore Body in the Jinchuan Ni-Cu Sulfide Deposit,SW China

The Space Distributions of Platinum Group Elements of the No...

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第14届国际矿床成因协会大会

作者： WANG Liang CHEN Liemeng SONG Xieyan JIANG Jinjin FU Zhiqiang The college of Nuclear Technology and Automation Engineering Chengdu University of Technology State Key Laboratory of Ore Deposit Geochemistry Institute of GeochemistryChinese Academy of Sciences Guizhou Land Survey and Plan Institute

1 Introduction The Jinchuan Ni-Cu sulfide deposit is ranked as the third largest magmatic sulfide deposit in the world,which contains 558 million metric tons of Ni resource and 354million metric tons of Cu resource at Ni and Cu grades of1.06%and 0.75%,respectively(Tang and Li,1995).The Jinchuan ultramafic intrusion is only 1.34 km in outcrop,but the mineralized percentage of Ni and Cu is

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A Novel nuclear Station Inspection Robot

A Novel Nuclear Station Inspection Robot

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2014 4th IEEE International Conference on Information Science and technology

作者： Qingsong Liu Guohe Wang Yachao Dong Pengfei Liu Jianquan Sun Xinyu Wu Yangsheng Xu China Nuclear Power Technology Research Institute(CNPRI) Guangdong Provincial Key Lab of Robotics and Intelligent System Shenzhen Institutes of Advanced Technology Chinese Academy of Sciences Department of Mechanical and Automation Engineering The Chinese University of Hong Kong

As a key device in nuclear station, the steam generator is vulnerable to certain kinds of damages, which make it necessary to check the generator annually. However, it is impossible for human to finish the examine because of that the tremendous tubes inside the generator makes its inner space too crowded. In this paper, we introduced a novel designed climbing robot system which is competent to the work. The main part of the robot system is a vehicle which can moves inside the steam generator carrying a PT Arm. Four cameras are installed in the vehicle and PT Arm to send the real time video back for analysis. We built a control panel as the interface for users to control the vehicle and a cabinet as the container of all the processors int the control system. Experiments show that our system works stably inside the steam generator.

关键词： Arm A Novel nuclear Station Inspection Robot

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