RESEARCH OF BUILDING MATERIALS

DATA BANK ON ACTIVATION CHARACTERISTICS OF RADIATION SHIELDING CONCRETE OF NUCLEAR PLANTS

Vestnik MGSU 2/2018 Volume 13
  • Bylkin Boris Konstantinovich - National Research Centre "Kurchatov Institute" (NRC "Kurchatov Institute") Doctor of Technical Sciences, Professor, Leading Researcher, National Research Centre "Kurchatov Institute" (NRC "Kurchatov Institute"), 1 Akademika Kurchatova pl., Moscow, 123182, Russian Federation.
  • Engovatov Igor’ Anatol’yevich - Moscow State University of Civil Engineering (National Research University) (MGSU) Doctor of Technical Sciences, Professor, Professor of Construction of Heat and Nuclear Power Facilities, Moscow State University of Civil Engineering (National Research University) (MGSU), 26 Yaroslavskoe shosse, Moscow, 129337, Russian Federation.
  • Kozhevnikov Aleksey Nikolayevich - Moscow State University of Civil Engineering (National Research University) (MGSU) Candidate of Technical Sciences, Associate Professor, Leading Researcher, Department of Construction of Thermal and Nuclear Power Facilities, Moscow State University of Civil Engineering (National Research University) (MGSU), 26 Yaroslavskoe shosse, Moscow, 129337, Russian Federation.
  • Sinyushin Dmitriy Konstantinovich - AO "State Specialized Design Institute" (AO "GSPI") Deputy Head of the Department, AO "State Specialized Design Institute" (AO "GSPI"), 4 Sharikopodshipnikovskaya str., Moscow, 115088, Russian Federation.

Pages 213-221

Subject: studies conducted in the Russian Federation and abroad have shown that the induced activity and activation characteristics of radiation shielding concretes are determined by chemical elements, concentration of which in the initial components can vary within the limits from several parts-per-thousand to percentages by mass. In turn, activated shielding structures are one of the sources of non-deactivated radioactive waste at the stage of decommissioning of nuclear plants. To reduce activity and volume of radioactive waste, the selection of compositions of shielding concretes for nuclear plants should take into account the content of activation-hazardous elements. Research objectives: the purpose of this study was to justify the necessity and possibility of creating a data bank on activation characteristics of structural and shielding materials for nuclear plants. Materials and methods: computational and experimental studies included the studies of a wide range of compositions of shielding concretes, activity and volumes of activated radioactive waste. Results: the most important chemical elements that determine the long-term induced activity of shielding concretes were identified based on the data of computational and experimental studies. The structure, content and information components of the database on activation characteristics of shielding concretes of nuclear plants were developed. Conclusions: we have justified the practical possibility of targeted selection of the least activated shielding concretes of nuclear plants at the stage of their design and construction as well as the possibility of modeling compositions of operating and decommissioned plants when performing predictive calculations of the activity of materials and volumes of radioactive waste.

DOI: 10.22227/1997-0935.2018.2.213-221

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FORMATION OF THE STRUCTURE AND COMPOSITION OF THE DATA BANK OF THE SYSTEM OF OPERATIONAL MONITORING OF UNIQUE CONSTRUCTION FACILITIES

Vestnik MGSU 11/2012
  • Soshnikov Aleksandr Aleksandrovich - Moscow State University of Civil Engineering (MGSU) postgraduate student, Department of Information Systems, Technology and Automation in Civil Engineering, Moscow State University of Civil Engineering (MGSU), 26 Yaroslavskoe shosse, Moscow, 129337, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .
  • Blokhina Nina Sergeevna - Moscow State University of Civil Engineering (MGSU) Candidate of Technical Sciences, Associate Professor, Department of Information Systems, Technology and Automation in Civil Engineering, Moscow State University of Civil Engineering (MGSU), 26 Yaroslavskoe shosse, Moscow, 129337, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .

Pages 288 - 292

The subject matter of the article is the system of continuous monitoring of the technical condition
of structures and its components. The authors also consider the approach to formation of the
data bank based on the cyclic data warehouse. The cyclic data warehouse (CS) is the basic element
of the data bank. Portions of data that represent continuous measurements taken in the non-stop
mode can be rapidly and efficiently saved into the CS system. CS is a file of a fixed size containing
a header and a sequence of objects. Data is supplied into the CS continuously in the cyclic mode:
incoming new data portions replace the outdated ones. New items are written over the old ones
when the storage time of the latter is expired. Data access in the CS is possible within the period
between the recording and replacement of the item.
The proposed option of the system of continuous monitoring of the technical condition of structures
ensures effective asynchronous data transmission between software modules and servers
and data consistency, because:
there is no more need for any additional data deletion operations;
the fixed size of a CS item allows fast data positioning in the CS file in the course of the random
access.
CS of sufficient size will provide for the possibility of a long delay in data transmission in case
of an abnormal situation occurring in the course of operation of the system of continuous monitoring
of the technical condition of structures.
Long-term operation of cyclic data warehouses has proven their effectiveness. For example,
a cyclic data warehouse is incorporated into a continuous monitoring system of the bridge over the
Matsesta River as the core data bank element.

DOI: 10.22227/1997-0935.2012.11.288 - 292

References
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