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Zhang Y.X.,Nuclear 404 Ltd Company | Wang C.Z.,Nuclear and Radiation Safety Center | Zhang Y.L.,Hanshan Normal University | Li Z.W.,Hanshan Normal University
Advanced Materials Research | Year: 2014

CuO/ã-Al2O3 catalyst was used to deal with the waste leachate in CWAO technology of, and the SEM and TEM characterization showed: active component in the surface of the carrier distribution is uniform; In CWAO process, six factors, based on the CODCr removal rate and turbidity removal rate, the biggest impact factor is reaction temperature, and the influence factors of the top three were reaction temperature, catalyst dosage and reaction time. The influence factors of those in the bottom three are influent water pH, oxygen partial pressure, stirring intensity, and three factors of influence on the strength is close. Optimizing operation process, in order: reaction temperature of 200 °C, catalyst dosage of 1.5 g, oxygen partial pressure of 2.0 MPa, stirring intensity 800 rpm, influent water pH of 7.0, the reaction time of 70 min. © (2014) Trans Tech Publications, Switzerland.

Ma C.-W.,Henan Normal University | Lv C.-J.,Henan Normal University | Zhang G.-Q.,CAS Shanghai Institute of Applied Physics | Wang H.-W.,CAS Shanghai Institute of Applied Physics | Zuo J.-X.,Nuclear and Radiation Safety Center
Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms | Year: 2015

Neutron-induced reactions on 27Al and 19F nuclei are investigated using the optical model implemented in the TALYS 1.4 toolkit. Incident neutron energies in a wide range from 0.1 keV to 30 MeV are calculated. The cross sections for the main channels (n, np), (n, p), (n, α), (n, 2n), and (n, γ) and the total reaction cross section (n, tot) of the reactions are obtained. When the default parameters in TALYS 1.4 are adopted, the calculated results agree with the measured results. Based on the calculated results for the n + 27Al and n + 19F reactions, the results of the n + 27Al19F reactions are predicted. These results are useful both for the design of thorium-based molten salt reactors and for neutron activation analysis techniques. © 2015 Elsevier B.V.

Chen J.,National Key Laboratory of Science and Technology on Reactor System Design Technology | Li L.,Nuclear and Radiation Safety Center | Fan J.,China Nuclear Power Engineering Co. | Liu H.-C.,National Key Laboratory of Science and Technology on Reactor System Design Technology
Hedianzixue Yu Tance Jishu/Nuclear Electronics and Detection Technology | Year: 2015

In order to guarantee the quality and reliability of instrumentation and control equipment of nuclear power plant, the quality control of the electronic components should be strengthened. This paper analyzes the problems of the component quality control of I&C equipment of nuclear power plant, puts forward some key points that should be paid attention to in the application of the electronic components, focuses on the quality grade of components, The component secondary screening and other aspects, provides reference for the localization of I&C equipment of nuclear power plant. © 2015, Editorial Board of Nuclear Electronics & Detection Tech. All right reserved.

Lu C.-J.,Henan Normal University | Ma C.-W.,Henan Normal University | Liu Y.-P.,Henan Normal University | Zhang W.-G.,Henan Normal University | Zuo J.-X.,Nuclear and Radiation Safety Center
Nuclear Science and Techniques | Year: 2015

In radiotherapy, the energy of the γ rays used could be larger than 10 MeV, which would potentially activate stable nucleus into a radioactive one. The γ induced reactions on some of the human essential elements are studied to show the probability of changes of nuclei. The Talys 1.4 toolkit was adopted as the theoretical model for calculation. The reactions investigated include the (γ, n) and (γ, p) channels for the stable Na, Mg, Cl, K, Ca, and Fe isotopes, with the incident energy of γ ranging from 1 to 30 MeV. It was found that the cross sections for the reactions are very low, and the maximum cross section is no larger than 100 mb. By considering the threshold energy of the channel, the half-life time of the residue nucleus, and the percentage of the element accounting for the weight and its importance in the body, it is suggested to track the radioactive nuclei 22Na, 41Ca, and 42,43 K after γ therapy. The results might be useful for medical diagnosis and disease treatment. © 2015, Science Press. All rights reserved.

Zhao D.-L.,Xian Jiaotong University | Wu Y.-L.,Xian Jiaotong University | Zhang B.-P.,Xian Jiaotong University | Zhang B.-P.,Nuclear and Radiation Safety Center
Hedianzixue Yu Tance Jishu/Nuclear Electronics and Detection Technology | Year: 2011

It introduces the key component CCD in the radiation imaging system's: the radiation test assessment method, the layout of the laboratory equipments as well as the changes of the CCDs imaging capacity before and after irradiation. The main performance, the CCD gray value V.S. the irradiated time, was monitored on-line. access to the CCD in its radiation performance of the work environment changes over time. The preliminary conclusions on the CCDs anti-radiation performance were obtained and discussed.

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