Radiation-hygienic support of work with nitride fuel for fast reactors: problems, achievements and prospects. Initial position

2021 ◽  
Vol 61 (9) ◽  
pp. 558-566
Author(s):  
Marina R. Popchenko ◽  
Alexander G. Tsovyanov ◽  
Sergei M. Shinkarev ◽  
Anatoly V. Simakov ◽  
Vladimir N. Klochkov ◽  
...  
Keyword(s):  
Fast Neutron ◽  
Scientific Research ◽  
Initial Position ◽  
Quick Response ◽  
Special Program ◽  
Fast Reactors ◽  
The Real ◽  
Environmental Situation ◽  
Nitride Fuel

The article is devoted to the substantiation of the need to implement a special program of radiation-hygienic support of work with nitride fuel for fast neutron reactors. It is shown that at the current pace of implementation of the project direction "Breakthrough", in conditions when achievements in scientific research lead to a revision of design and technological solutions, it is possible to manage radiation and hygiene support only in a mode that provides a quick response to changes in the real production and environmental situation.

An Efficient Smartphone Assisted Indoor Localization with Tracking Approach using Glowworm Swarm Optimization Algorithm

2021 ◽  
pp. 101-107
Author(s):  
Mohammad Alshehri ◽  
Keyword(s):  
Real Time ◽  
Indoor Localization ◽  
Initial Position ◽  
Swarm Optimization ◽  
The Real ◽  
Assisted Navigation ◽  
Glowworm Swarm Optimization ◽  
Tracking Process ◽  
Wide Range ◽  
Localization And Tracking

Presently, a precise localization and tracking process becomes significant to enable smartphone-assisted navigation to maximize accuracy in the real-time environment. Fingerprint-based localization is the commonly available model for accomplishing effective outcomes. With this motivation, this study focuses on designing efficient smartphone-assisted indoor localization and tracking models using the glowworm swarm optimization (ILT-GSO) algorithm. The ILT-GSO algorithm involves creating a GSO algorithm based on the light-emissive characteristics of glowworms to determine the location. In addition, the Kalman filter is applied to mitigate the estimation process and update the initial position of the glowworms. A wide range of experiments was carried out, and the results are investigated in terms of distinct evaluation metrics. The simulation outcome demonstrated considerable enhancement in the real-time environment and reduced the computational complexity. The ILT-GSO algorithm has resulted in an increased localization performance with minimal error over the recent techniques.

scholarly journals DIGITAL HUMANISTIC PEDAGOGY: RELEVANT PROBLEMS OF SCIENTIFIC RESEARCH IN THE FIELD OF USING ICT IN EDUCATION

2016 ◽  
Vol 53 (3) ◽  
pp. 1 ◽  
Author(s):  
Valeriy Yu. Bykov ◽  
Mariya P. Leshchenko
Keyword(s):  
Research Methods ◽  
Digital Humanities ◽  
Scientific Research ◽  
Pedagogical Knowledge ◽  
Educational Process ◽  
Learning Activity ◽  
Ict In Education ◽  
The Real ◽  
Methodological Principles ◽  
Ict Training

In the article theoretical and methodological principles of digital humanistic pedagogy – the science about the laws of creating a positive integrated educational reality as a result of the convergence of physical and virtual (created using ICT) training spaces (environments) are determined. Based on the use of modern ICT learning activity (formal, nonformal and informal) is at the intersection of two worlds: the real and the virtual. Methodology and research methods of classical pedagogy require review and improvement in the context of current realities of the educational process, needs and interests of all its subjects. The development of digital humanities in the international educational space is analyzed; the content of the new field of pedagogical knowledge as part of digital humanistic is outlined; research methods and directions of current scientific research are defined.

Tritium in Nitride Fuel of Fast Reactors

Atomic Energy ◽  
2019 ◽  
Vol 125 (4) ◽  
pp. 244-249
Author(s):  
O. A. Ustinov ◽  
V. A. Kashcheev ◽  
A. Yu. Shadrin ◽  
A. I. Tuchkova ◽  
A. A. Semenov ◽  
...  
Keyword(s):  
Fast Reactors ◽  
Nitride Fuel

State of nitride fuel after irradiation in fast reactors

Atomic Energy ◽  
2012 ◽  
Vol 112 (6) ◽  
pp. 410-416 ◽  
Author(s):  
F. N. Kryukov ◽  
O. N. Nikitin ◽  
S. V. Kuzmin ◽  
A. V. Belyaeva ◽  
E. B. Maltseva ◽  
...  
Keyword(s):  
Fast Reactors ◽  
Nitride Fuel

Program and Results of Reactor Tests of Mixed Nitride Fuel for Fast Reactors

Atomic Energy ◽  
2015 ◽  
Vol 118 (2) ◽  
pp. 96-100 ◽  
Author(s):  
V. M. Troyanov ◽  
A. F. Grachev ◽  
L. M. Zabud’ko ◽  
M. V. Skupov ◽  
D. V. Zozulya
Keyword(s):  
Fast Reactors ◽  
Nitride Fuel

R&D and Pre-Normative Needs for Generation IV Nuclear Reactors

2008 ◽  
Author(s):  
Andrea Tonti ◽  
Claude Renault ◽  
Morello Sperandio ◽  
Guy Baylac ◽  
Corrado Delle Site ◽  
...  
Keyword(s):  
Fast Neutron ◽  
Neutron Fluence ◽  
Nuclear Reactors ◽  
Operating Temperature ◽  
Core Structure ◽  
New Materials ◽  
Fast Reactors ◽  
Temperature Range ◽  
High Operating Temperature ◽  
Fission Reactors

The development of new generations of fission reactors requires the study of a new series of standards to cover the gap between actual codes and the needs generated by this kind of plants (Generation IV systems). Specific issues relate to high operating temperature of gas cooled reactors (above 700°C with a goal of 1000°C) and high fast neutron fluence on core structure in fast reactors. Material standards need to be updated to cover this temperature range and new materials need to be developed too. Also the resistance of materials submitted to irradiation is to be increased. This work draws the attention on what parts of Generation IV pressure equipments are not covered by existing codes and thus require specific normative measures.

The IAEA Programme in Support of the Development, Design and Safety Analysis of Innovative Fast Neutron Systems

2014 ◽  
Author(s):  
S. Monti ◽  
A. Toti
Keyword(s):  
Fast Neutron ◽  
Nuclear Power ◽  
Chemical Properties ◽  
Fast Reactors ◽  
Major Step ◽  
Energy Agency ◽  
Member States ◽  
Technical Data ◽  
Reactor Technology ◽  
Experimental Facilities

The International Atomic Energy Agency (IAEA) recognizes the importance of the development and deployment of innovative fast neutron systems to assure the long-term sustainability of nuclear power. In this area the IAEA — with the fundamental support of its Technical Working Group on Fast Reactors (TWG-FR) where all the Member States with a programme on fast neutron systems are represented — acts as the major forum for international cooperation. On the basis of the recommendations provided by the TWG-FR, the IAEA defines and implements multiannual programmes which, in particular, are intended to help Member States in improving their capabilities in the development, design and safety analyses of innovative fast neutron systems. Thanks to the information and experimental data provided by the Member States, the IAEA is in the position to carry out benchmark exercises on different aspects of fast reactors, which contribute to the verification, validation and qualification of the simulation codes to be used for the design and the safety analyses of innovative concepts. Examples of such initiatives are the concluded coordinated research projects (CRPs) on BN-600, Monju and Phenix reactors, the on-going CRP on the EBR-II reactor and the planned CRPs on PFBR, CEFR, BN-800 and Monju reactors. The exchange of information and the collection of technical data within the TWG-FR also allow the IAEA to publish status reports and technical documents, as well as to develop databases with the most up-to-date information on existing and planned fast neutron systems. Furthermore, the IAEA is committed to promote the international harmonization of many aspects of the fast reactor technology. A major example is the development — together with the Generation IV International Forum — of internationally agreed Safety Design Criteria for sodium cooled fast reactors (SFR), which is a major step forward for the licensing of GEN-IV SFR prototypes and industrial demonstrators. Finally, a new CRP on “Sodium properties and safe operation of experimental facilities in support of the development and deployment of Sodium-cooled Fast Reactors (SFR) - NAPRO” has been recently launched in order to harmonize sodium physical and chemical properties to be used in the design of innovative SFRs, and to develop agreed design rules and best practices for sodium experimental facilities, as well as guidelines for the safe handling of sodium. With complementary objectives, the IAEA is also developing a catalogue of existing and planned experimental facilities in support of fast neutron system R&D programmes.

scholarly journals The heuristically-based generalized perturbation theory

2021 ◽  
Vol 7 ◽  
pp. 7
Author(s):  
Augusto Gandini
Keyword(s):  
Perturbation Theory ◽  
Perturbation Method ◽  
Linear Analysis ◽  
Linear Functionals ◽  
Fast Reactors ◽  
The Real ◽  
Generalized Perturbation Theory ◽  
Sensitivity Studies

The generalized perturbation method is described relevant to ratios of bi-linear functionals of the real and adjoint neutron fluxes of critical multiplying systems. Simple linear analysis for optimization and sensitivity studies are then feasible relative to spectrum and space-dependent quantities, such as Doppler and coolant void reactivity effects in fast reactors.

scholarly journals ECONOMIC VALUE OF R&D IN THE FIELD OF FAST REACTORS TAKING INTO ACCOUNT UNCERTAINTY ON THEIR COMPETITIVENESS: THE CASE OF FRANCE

2017 ◽  
Vol 22 (1) ◽  
Author(s):  
NATHALIE TAVERDET-POPIOLEK ◽  
BIANKA SHOI
Keyword(s):  
Real Options ◽  
Economic Value ◽  
Fast Reactors ◽  
Real Options Theory ◽  
The Real ◽  
Previous Generation ◽  
Nuclear Development ◽  
Key Variables ◽  
Options Theory

In a context of mix signals regarding worldwide nuclear development, this paper aims at assessing the economic value of pursuing research in Generation IV fast reactors today, given that it would allow industrial deployment around 2040 in case of high uranium prices. Two key variables shall be considered as inputs for the assessment: the price of uranium and the overcost of Generation IV reactors compared with the previous generation. Our model is based on the “real options” theory which demonstrates that this value is positive and outweighs the risks associated with the competitiveness of Generation IV. It is quite simple but it clarifies and introduces important aspects of the field.

scholarly journals “It Turns Out Glavlit Has Not Yet Signed Off on Ostrovsky Dictionary…” (Correspondence of N. S. Ashukin and S. I. Ozhegov 1940—1960s)

2021 ◽  
pp. 113-135
Author(s):  
O. V. Nikitin
Keyword(s):  
Philosophy Of Science ◽  
Objective Assessment ◽  
Scientific Research ◽  
The Real ◽  
Ambiguous Situation ◽  
The Press ◽  
The World ◽  
Real Picture ◽  
First Time ◽  
State Secrets

The   little-known   factsof the work of N. S. Ashukin, S. I. Ozhegov and V. A. Filippov on the original lexicographic edition  of  the  1940s — “Dictionary   to  the plays of A.  N.  Ostrovsky”  is  analyzed in the article. The connection between the socio-cultural situation in the country and the scientific research of those years is shown. Special attention is paid to the facts of ideological pressure on philological thought. The circumstances that  hindered the publication of the Dictionary are revealed. For the first  time,  genuine  letters   from the participants in this project, telling about the ambiguous situation in Glavlit (Soviet Main Administration for Safeguarding State Secrets in the Press) and the intention of the authors to save the manuscript from death are published in the appendix. It tells about further attempts of scientists and their descendants to resume the preparation of the publication of the book in the  1960—1970s.  The facts given in the correspondence are commented on from the standpoint  of  history  and  philosophy  of science, the necessary references are indicated, possible comparisons are made with the events and persons mentioned in the letters. The presented fragment of the linguistic picture of the world is also considered  in  the  key of the development of linguistic personality and its role in the era of dictatorship. Attention is drawn to the high historical  value of the undertaken work and its place in the lexicographic tradition of the XX century. It is concluded  that archival materials  play a key role in reconstructing the real picture  of the life and activities of Soviet scientists, supplement the chronicle of science with valuable observations and contribute to an objective  assessment  of  the  achievements of philologists, show their firm position in upholding the interests  of  science  during  the dominance of ideologization in society.

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