Taking the CSR1000 reactor as the research object, the SCAC-CSR1000 transient safety analysis code was made. The safety analysis of CSR1000 was done. The results showed that there is a flow reversal phenomenon in the ...
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China supercritical water cooled reactor CSR1000 is one of the fourth generation advanced reactors and is the first one which introduces passive safety system into the fourth generation reactor. Establish an analysis ...
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Face detection is one of the key technology for face information ***,face detection is mainly based on the RGB image,which might lead unexpected results when dealing with non-real 2-dimensional face,which printed on c...
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ISBN:
(纸本)9781509011964
Face detection is one of the key technology for face information ***,face detection is mainly based on the RGB image,which might lead unexpected results when dealing with non-real 2-dimensional face,which printed on clothes and *** work proposes a face detection approach based on features of depth *** used depth camera to obtain the raw depth data,and then mapped it to the 2D image combined with smooth image processing method to get the depth *** improved HOG-LBP algorithm was designed to profiling the features of face depth,and SVM-light was used for machine ***,an online video face detection system was accomplished.
Hospital El Salvador: a novel paradigm of intensive care in response to COVID-19 in central America. Lancet Glob Health 2021;9: e241?42?In this Comment, the conflict of interest statement should have included the foll...
Hospital El Salvador: a novel paradigm of intensive care in response to COVID-19 in central America. Lancet Glob Health 2021;9: e241?42?In this Comment, the conflict of interest statement should have included the following: ?By virtue of their roles within a public hospital or the Ministry of Health, MB, LC, WH, and XS are government employees. The findings and conclusions in the Comment are only those of the authors.? This correction has been made as of Feb 26, 2021.
A severe accident code was applied for modeling of a typical pressurized water reactor (PWR) nuclear power plant, and the effects of RCS depressurization on the gas temperature of the relief tank cell in the containme...
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This paper first analyzes the feasibility of SA-508 Grade 3 Class 1 Steel as an alternative material for Supercritical Water-Cooled reactor (SCWR) reactor Pressure Vessel (RPV). This kind of steel is limited to be app...
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ISBN:
(纸本)9781119027942
This paper first analyzes the feasibility of SA-508 Grade 3 Class 1 Steel as an alternative material for Supercritical Water-Cooled reactor (SCWR) reactor Pressure Vessel (RPV). This kind of steel is limited to be applied in SCWR RPV due to its quenching property, though large forging could be accomplished by domestic manufacturers in forging aspect. Therefore, steels with higher strength and better quenching property are needed for SWCR RPV. The chemical component of SA-508 Gr.3 Cl.2 steel is similar to that of SA-508 Gr.3 Cl.1 steel, and more appropriate matching of strength and toughness could be achieved by the adjusting the elements contents, as well as proper control of tempering temperature and time. In light of the fact that Cl.2 steel has been successfully applied to steam generator, it could be an alternative material for SWCR RPV. SA-508 Gr.4N steel with high strength and good toughness is another alternative material for SCWR RPV. But large amount of research work before application is still needed for the lack of data on welding and irradiation etc.
Bearing lifecycle management system(BLMS) is a uniform and integration platform. It is the first time to realize the unified management, integration, tracking and feedback for numerical control machine tool bearing in...
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Bearing lifecycle management system(BLMS) is a uniform and integration platform. It is the first time to realize the unified management, integration, tracking and feedback for numerical control machine tool bearing information. It supports a series of company activities that include design, manufacture, utilization, maintenance, and finally recycle throughout the bearing's lifecycle. Through constructing the ontology model for BLMS, it is convenient to store both new data and the existing data that comes from legacy systems in database. Data integration technology has been adopted to solve heterogeneous phenomenon on organized-form and data model, which generated in the process of storing the existing data. The utilization of the data integration tool of extraction, transformation, cleaning, and loading(ETL) is also introduced in this paper. Finally, it is verified using Kettle for a case.
Effects of main alloying elements, quenching and tempering temperatures and quenching cooling velocity on mechanical properties of Z12CN13 stainless steel were obtained by controlling the material composition and opti...
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ISBN:
(纸本)9781119027942
Effects of main alloying elements, quenching and tempering temperatures and quenching cooling velocity on mechanical properties of Z12CN13 stainless steel were obtained by controlling the material composition and optimizing the heat treatments. Evaluation of domestic forging Z12CN13 stainless steel for Hold-Down Spring of reactor had been completed, and all parameters met the requirement of design criteria national standard. The main alloying elements should be selected from upper limits to reach the technical standards of the strength and toughness properties. The strength, plasticity and toughness properties of domestic forging Z12CN13 stainless steel will decrease with increasing the quenching temperature. On the contrary, the strength decreases, plasticity and the toughness properties will increase with the increasing of tempering temperature. The tensile strength and impact toughness of materials are influenced obviously with the quenching cooling velocity. Improving the cooling velocity could meet the technical standards of the strength and toughness properties. The comprehensive mechanical properties and combination of strength and toughness is the best when the domestic forging Z12CN13 stainless steel is quenched at 985°C and then cooling fast and aged at 640°C.
The State Oriented Procedure (SOP) is developed to improve the existing emergency operation procedures, namely, the Event Oriented Procedure (EOP). It is developed based on the finite Nuclear Steam Supply system (NSSS...
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