Global Nuclear Safety最新文献

{"title":"Methodology of Analysis of Thermal Vision Parameters of NPP Standby Diesel Together with Standard Instrument Readings","authors":"E. Abidova, Prokhor V Povarov, V. M. Popov, Daria A Prytkova, O. Pugacheva","doi":"10.26583/gns-2023-01-06","DOIUrl":"https://doi.org/10.26583/gns-2023-01-06","url":null,"abstract":"Analytical studies of the results of thermal imaging control using IAS TIK together with the corresponding values of the temperature control results obtained in the standard DGS condition monitoring system were carried out within the framework of R&D for the development of an integrated automated system for thermal imaging control (IAS TIK). Approbation of IAS TIK in NPP conditions was carried out by thermography of standby diesel generator sets of NPP type 12zv40/48+S2445-12. At the same time, the parameters of the diesel engine and the generator were measured using the standard control system. The methodology is proposed that provides an analysis of the uniformity of the operation of diesel cylinders, the condition of the crankshaft bearings, the condition and quality of the generated electricity of the generator, as well as the analysis of the operation of lubrication and cooling systems. The practical application of the technique demonstrates the correspondence between the temperatures measured by the standard system and the IAS TIK. A joint analysis of the results obtained by the standard and developed systems provides an increase in the depth of the diagnostic examination and confirms the information content of the thermographic parameters and the quality of the measurement channels of the standard systems. The parameter values obtained from the analysis of the indicators of the standard control system, recorded at a steady power value, will be used in subsequent diagnostics to establish trends in these parameters","PeriodicalId":113403,"journal":{"name":"Global Nuclear Safety","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124819898","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Corporate System of Modern Nuclear Knowledge","authors":"S. V. Arsentyev","doi":"10.26583/gns-2023-01-08","DOIUrl":"https://doi.org/10.26583/gns-2023-01-08","url":null,"abstract":"The paper considers methodological issues related to the formation of a corporate system of modern nuclear knowledge, which is the core of the new paradigm of the nuclear industry staffing at the present stage. The category \"Personnel/Knowledge\" represents the main element which connects the new paradigm of nuclear industry development, which reflects the logic of nuclear sector development, and the new paradigm of management, which, in its turn, reflects the structural changes in the business environment of the XXI century. These two paradigms form the basis of the modern platform for innovative development of the nuclear industry as an informational basis for strategic decision-making. Nuclear personnel support at the present stage, being an integral part of the modern platform, at the same time represents one of the most important and complex tasks of innovative development, the solution of which, being implemented in the corporate strategy. ","PeriodicalId":113403,"journal":{"name":"Global Nuclear Safety","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117219302","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The Problem of Modeling the Geometry of Twisted Fuel Rods with X-Type Cross Section in the Performance of Thermohydraulic Calculations","authors":"Andrey M Kirkin, A. Kuryndin, S. Sinegribov, Arsenii O Smirnov, Valerii M Khlobystov","doi":"10.26583/gns-2023-01-03","DOIUrl":"https://doi.org/10.26583/gns-2023-01-03","url":null,"abstract":"For creating computational models of processes affecting the safety of nuclear facilities, in accordance with the federal rules and regulations in the field of atomic energy use, the selected modeling methods, as well as the accepted approximations and assumptions shall be justified. The paper considers the issues of taking into account the specifics of modeling the geometry of twisted fuel rods with x-type cross section using nodalization software, as well as possible approaches to describing the geometry of such fuel rods during thermohydraulic calculations. The paper defines a preferred method for specifying geometry, which allows to correctly take into account the maximum value of the heat flux from the surface of the twisted fuel rods with x-type cross section when calculating temperatures in the core and the possibility of a heat exchange crisis on the surface of such fuel rods in case of violations of normal operation.","PeriodicalId":113403,"journal":{"name":"Global Nuclear Safety","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133948703","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Digital Trends in Strategic Development of Nuclear Power Engineering Enterprises","authors":"","doi":"10.26583/gns-2023-01-09","DOIUrl":"https://doi.org/10.26583/gns-2023-01-09","url":null,"abstract":"This article substantiates the benefits of digitalization for the strategic development of industrial enterprises. The main directions of digital transformation of all business processes are defined. The experience and key results of the technological development strategy of the mechanical engineering division of SC \"Rosatom\" and the specifics of the nuclear power industry as a management object are considered and presented.","PeriodicalId":113403,"journal":{"name":"Global Nuclear Safety","volume":"129 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121185552","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Selecting Burnup Algorithms in OpenMC Using the Calculated Benchmark of LEU Assembly and MOX Fuel","authors":"Hamza A Tanash, Denis A Solovyov, V. Zimin, A. Lobarev, D. Plotnikov, N. V. Schukin","doi":"10.26583/gns-2023-01-07","DOIUrl":"https://doi.org/10.26583/gns-2023-01-07","url":null,"abstract":"OpenMC is a state-of-the-art Monte Carlo neutron transport simulation code that uses the Python programming language as an API. OpenMC supports eight burnout simulation algorithms. This study presents the results of choosing an integration method for modeling the burnup of fuel assemblies with burnable poisons for WWER-1000 reactors. Burnout simulation results from OpenMC were compared with those reported in the OECD benchmark. 8 different numerical integrators can be used to model burnout in OpenMC code: PI, CE/CM, LE/QI, CE/LI, CF4, EPC-RK4, SI-CE/LI, SI-LE/QI. The test results showed that the SI-CE/LI, SI-LE/QI integrators require significantly more time to calculate one burnup step than the others with the same accuracy, so they were excluded from further consideration. The PI integrator showed low integration accuracy at the same burnup steps with other integrators. However, PI has a high performance compared to other integrators, and as the integration step decreases, it converges to one solution, which can be chosen as a reference for assessing the quality of other integrators. Based on the results obtained using the fine step PI integrator, it was decided to use the CE/LI integrator for further work. The results obtained with CE/LI were compared with those obtained with the VVER-1000 LEU and MOX benchmark for codes: MCU, TVS-M, WIMS8A, HELIOS, MULTICELL and showed good agreement. Thus, we can conclude the applicability of the CE/LI integrator as part of OpenMC for modeling the burnup of fuel assemblies containing burnable poisons. During the work, the resources of the high-performance computer center of the National Research Nuclear University MEPhI were used.","PeriodicalId":113403,"journal":{"name":"Global Nuclear Safety","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126636223","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Information Transmission Features of Live Mode Radio Channel When Using Unmanned Dosimetry Complex","authors":"","doi":"10.26583/gns-2023-01-01","DOIUrl":"https://doi.org/10.26583/gns-2023-01-01","url":null,"abstract":"The accident at the Fukushima NPP has revealed a certain drawback of traditional methods of registration of ionizing radiation by means of the automated radiation monitoring system, because in the conditions of the accident at the NPP the monitoring posts of the system were damaged as a result of the tsunami (23 of 24), which did not allow to evaluate the degree of radioactive contamination of the area in the early stages. In such conditions the most promising method of radiation control carried out on the potentially hazardous area is a non-contact method using an unmanned dosimetry complex (UDC), the application of which would reduce the risk of exposure to additional dose loads of personnel carrying out search and reconnaissance work and, additionally, provide management not only with information regarding radioactive contamination of the environment, but also directly provide the results of the search and reconnaissance. However, apart from the equipment used to determine the radiation background (detectors, spectrometers, radiometers, etc.) an important part of the UDC is the organization of the dosimetry complex and the way of information transfer.A possible variant of data transmission channel from the dosimetry complex installed on the UDC to the operator's personal computer is presented using NRF radio modules as an example.","PeriodicalId":113403,"journal":{"name":"Global Nuclear Safety","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130159773","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Justification of Scanning Contact Potentiometry Applicability to Test NPP Equipment during its Manufacture","authors":"Vitaly I Surin, A. S. Shcherban, Alexander A Shcherbakov, M. Zhidkov, S. Tomilin, M. B. Ivanyi","doi":"10.26583/gns-2023-01-04","DOIUrl":"https://doi.org/10.26583/gns-2023-01-04","url":null,"abstract":"The method of scanning contact potentiometry (SCP) was investigated in factory conditions and functional capabilities of electric non-destructive testing (NDT) method to detect structural heterogeneities and technological defects were demonstrated directly in the process of reactor equipment production.","PeriodicalId":113403,"journal":{"name":"Global Nuclear Safety","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132137811","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Area Contamination Due to Dry Settling and Point Source Stack Effluents Washout by Precipitates","authors":"O. Gubeladze, Avtandil R Gubeladze1","doi":"10.26583/gns-2023-01-02","DOIUrl":"https://doi.org/10.26583/gns-2023-01-02","url":null,"abstract":"The article deals with an accidental situation development final stage accompanied by a powder explosion (combustion) incoming to a nuclear weapon part or dirty bomb and fissile nuclear materials dispergation with discharge in the air. The Formulas for impurity level express assessment fallen to the earth surface due to dry settling and stack effluents washout by precipitates are given.","PeriodicalId":113403,"journal":{"name":"Global Nuclear Safety","volume":"78 4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131117690","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Application of hierarchical agglomerative clustering to create a basic classes library of a VVER 1000/1200 reactor facility","authors":"G. V. Arkadov, I. Trykova, Denis V. Zvyagincev, K. I. Kotsoev","doi":"10.26583/gns-2023-01-05","DOIUrl":"https://doi.org/10.26583/gns-2023-01-05","url":null,"abstract":"In reactor plants with a water-water power reactor (VVER), free, weakly fixed and foreign objects may appear in the main circulation circuit, posing a threat to the integrity of the equipment and the safety of the reactor plant. For the purpose of early detection of these objects, the NPP is equipped with a system for detecting loose/weakly fixed objects (SOSP).In addition to the detection of loose/weakly fixed objects, the functions of the SOSP include the classification of registered events.The possibility of applying the classification algorithm is based on the fact that the signals from the operation of standard equipment are highly repeatable, even in the presence of noise, while a free object is characterized by a large stochastic component and its own deterministic class cannot be formed for it.Classification reduces the number of false alarms, allowing you to select signals from regular operations, while signals from one process must be assigned to one class.The idea of ​​the article is to \"train\" SOSP on a certain archive of data characterizing the normal functioning of the reactor plant, create a library of \"base\" classes and set the boundaries of each class so that, on the one hand, take into account the possible variability of signal parameters due to noise.Having defined the base classes, we can state that if a newly received signal falls into one of the classes, then it reflects the regular operation of the RI, while signals that do not fall into any of the classes may be the result of the appearance of a free/weakly fixed object.The article analyzes a lot of events accumulated in the archive of one of the existing SOSP.Their clustering was carried out, as a result of which the classes of events corresponding to regular technological operations were identified.For each class, the center of the class and the allowable limits of deviations from the center are calculated.All class centers obtained are benchmarks against which the SOSP either classifies a newly detected event in real time or characterizes it as \"unclassified\".","PeriodicalId":113403,"journal":{"name":"Global Nuclear Safety","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130957796","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Substantiating the Need to Cover Atomic Energy Objects from Air Strikes","authors":"O. Gubeladze, A. Gubeladze","doi":"10.26583/gns-2022-04-02","DOIUrl":"https://doi.org/10.26583/gns-2022-04-02","url":null,"abstract":"The article deals with one of the nuclear terrorism problem aspects, namely the attempts to implement “nuclear” blackmail by individual states. The possible destructive aircrafts impact to objects using atomic energy is considered. An express assessment of the guided air bomb strike result on the reinforced concrete object structure was carried out.","PeriodicalId":113403,"journal":{"name":"Global Nuclear Safety","volume":"114 13","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"113940637","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}