DEVELOPMENT OF ACCIDENTS AND PROTECTION AGAINST DAMAGES OF STRUCTURAL ELEMENTS OF PIPELINE TRANSPORT SYSTEMS

2018 ◽  
pp. 65-70
Author(s):  
I.A. Tararychkin ◽  
Keyword(s):  
Transport Systems ◽  
Structural Elements ◽  
Pipeline Transport

Experimental study of the transmission of energy of a microwave electromagnetic field into the oil environment employing a submersible emitter

2021 ◽  
pp. 120-129
Author(s):  
A. F. Sekachev ◽  
V. V. Shalai ◽  
Yu. D. Zemenkov ◽  
A. F. Fitzner ◽  
A. E. Yakovlev
Keyword(s):  
Experimental Study ◽  
Electromagnetic Field ◽  
Electromagnetic Fields ◽  
Thermal Process ◽  
Oil Industry ◽  
Coaxial Cable ◽  
Transport Systems ◽  
Thermal Imager ◽  
Pipeline Transport ◽  
Optically Transparent

The supply of heat to oil media pumped by pipeline transport systems is one of the main problems in the oil industry. The article describes a method for supplying heat to oil-containing media using the energy of an electromagnetic field. The possibility of releasing surfaces in contact with oil sludge under the influence of electromagnetic fields has been shown by experiment. We describe the design and parameters of a biconical horn radiator of a microwave electromagnetic field operating at a frequency of 2 450 MHz. A method for generating energy and transmitting it to the emitter by means of a coaxial cable is shown. Testing the emitter in oil placed in an optically transparent and radio-tight double-walled tank is presented. The design of the stand allows us to safely examine the thermal process using a thermal imager. The installation made it possible to heat 7 liters of oil at 15 °C in 12 minutes.

scholarly journals Protection of Transport Nodes and Resistibility of Pipeline Systems

2019 ◽  
Vol 17 (2) ◽  
pp. 218-229
Author(s):  
I. A. Tararychkin
Keyword(s):  
Emergency Situation ◽  
Simulation Method ◽  
Structural Elements ◽  
Pipeline Transport ◽  
Structural Synthesis ◽  
System Node ◽  
Separate System ◽  
Composition Structure ◽  
Simultaneous Transition ◽  
Selection Of

The analysis has been carried out and the laws of occurrence of emergency threats at pipeline transport facilities associated with the sequential damage of structural elements have been established. When an emergency situation develops, blocking of a separate system node is associated with simultaneous transition to a state of inoperability of all pipelines converging into the zone of that node. Such damage to the point element of the network structure prevents product flows from passing through that point. The ability of a system to withstand a progressive blocking depends on its composition, structure, and is characterized by an indicator of persistence, the value of which is calculated using a simulation method. An example of the use of cluster schemes in solving the problem of structural synthesis and the selection of the best protection option for a pipeline transport system has been considered.

scholarly journals Globalization of the transport system of the agro-industrial complex in the conditions of modern society

2020 ◽  
Vol 176 ◽  
pp. 05020
Author(s):  
M.A. Ananyev ◽  
Zh.Yu Bakaeva ◽  
O.L. Matveeva ◽  
I.V. Steklova ◽  
E.N. Shchegoleva
Keyword(s):  
Transport System ◽  
Modern Society ◽  
Transport Systems ◽  
Industrial Complex ◽  
Structural Elements ◽  
Economic Space ◽  
Different Types ◽  
Food Market ◽  
Temporal And Spatial ◽  
Favorable Conditions

The article deals with the problem of transportation of agricultural products. The main causes of problems in this area are identified. The mechanism of creating favorable conditions in the system of globalization relations of the modern economy is analyzed. The fundamental elements in the transport system are competition orientation and information ownership over a certain period of time. Globalization involves the integration of different types of transport systems at the sectoral characteristics. The purpose of the research is to study the essence, meaning and prospects of the concept of “economic transport space in the national food supply system" in the processes of food market globalization. The main indicators of the “economic space" are: first, to determine the parameters that characterize the economic transport space, and secondly, to determine the prospects for using its structural elements in the system of transport supply relations, depending on the temporal and spatial components in the modern sector of the economy to provide food for the needs of society.

Theoretical aspects of interaction of flow and structural elements in transport systems

2019 ◽  
pp. 3-7
Author(s):  
Petr Alexeyevich Kozlov ◽  
◽  
Vitaliy Sergeevich Kolokolnikov ◽  
Keyword(s):  
Transport Systems ◽  
Structural Elements

Carbon dioxide transport pipeline systems: overview of technical characteristics, safety, integrity and cost, and potential application of digital twin

2021 ◽  
pp. 1-41
Author(s):  
Ahmad Sleiti ◽  
Wahib Al-Ammari ◽  
Ladislav Vesely ◽  
Jayanta Kapat
Keyword(s):  
Carbon Dioxide ◽  
High Reliability ◽  
Systems Design ◽  
Data Driven ◽  
Transport Systems ◽  
Transport Sector ◽  
Future Research ◽  
Pipeline Transport ◽  
Carbon Dioxide Transport ◽  
Co2 Transport

Abstract Carbon dioxide transport from capture to utilization or storage locations plays key functions in carbon capture and storage systems. In this study a comprehensive overview and technical guidelines are provided for CO2 pipeline transport systems. Design specifications, construction procedures, cost, safety regulations, environmental and risk aspects are presented and discussed. Furthermore, challenges and future research directions associated with CO2 transport are sorted out including the large capital and operational costs, integrity, flow assurance, and safety issues. A holistic assessment of the impurities' impacts on corrosion rate and phase change of the transported stream is required to improve pipeline integrity. The influence of impurities and the changes in elevation on the pressure drop along the pipeline need to be further investigated to ensure continuous flow via accurate positioning of pumping stations. Although the long-experience in oil and gas pipeline industry forms powerful reference, it is necessary to develop particular standards and techno-economic frameworks to mitigate the barriers facing CO2 transport systems. Digital twins (DT) have potential to transform CO2 transport sector to achieve high reliability, availability and maintainability at lower cost. Herein, an integrated 5-component robust DT framework is proposed for CO2 pipeline transport systems and the future directions for DT development are insinuated. Data-driven-algorithms capable of predicting system's dynamic behavior still need to be developed. The data-driven approach alone is not sufficient and low-order physics based models should operate in tandem with the updated system parameters to allow interpretation and result's enhancing. Discrepancies between dynamic-system-models, anomaly-detection and deep-learning require in-depth localized off-line simulations.

scholarly journals The Vibrio cholerae SpeG Spermidine/Spermine N-Acetyltransferase Allosteric Loop and β6-β7 Structural Elements Are Critical for Kinetic Activity

2021 ◽  
Vol 8 ◽  
Author(s):  
Van Thi Bich Le ◽  
Sofiya Tsimbalyuk ◽  
Ee Qi Lim ◽  
Allan Solis ◽  
Darwin Gawat ◽  
...  
Keyword(s):  
Vibrio Cholerae ◽  
Intracellular Signaling ◽  
Point Mutations ◽  
Structural Evolution ◽  
Transport Systems ◽  
Enzyme Kinetic ◽  
Structural Elements ◽  
Allosteric Site ◽  
Kinetic Activity ◽  
Domains Of Life

Polyamines regulate many important biological processes including gene expression, intracellular signaling, and biofilm formation. Their intracellular concentrations are tightly regulated by polyamine transport systems and biosynthetic and catabolic pathways. Spermidine/spermine N-acetyltransferases (SSATs) are catabolic enzymes that acetylate polyamines and are critical for maintaining intracellular polyamine homeostasis. These enzymes belong to the Gcn5-related N-acetyltransferase (GNAT) superfamily and adopt a highly conserved fold found across all kingdoms of life. SpeG is an SSAT protein found in a variety of bacteria, including the human pathogen Vibrio cholerae. This protein adopts a dodecameric structure and contains an allosteric site, making it unique compared to other SSATs. Currently, we have a limited understanding of the critical structural components of this protein that are required for its allosteric behavior. Therefore, we explored the importance of two key regions of the SpeG protein on its kinetic activity. To achieve this, we created various constructs of the V. cholerae SpeG protein, including point mutations, a deletion, and chimeras with residues from the structurally distinct and non-allosteric human SSAT protein. We measured enzyme kinetic activity toward spermine for ten constructs and crystallized six of them. Ultimately, we identified specific portions of the allosteric loop and the β6-β7 structural elements that were critical for enzyme kinetic activity. These results provide a framework for further study of the structure/function relationship of SpeG enzymes from other organisms and clues toward the structural evolution of members of the GNAT family across domains of life.

scholarly journals Resistance of Repaired Pipeline Transport Systems to Damage to Network Structure Elements

2021 ◽  
Vol 132 (1) ◽  
pp. 41-47
Author(s):  
I. A. Tararychkin ◽  
Keyword(s):  
Current System ◽  
Resistance Index ◽  
Transport Systems ◽  
Quantitative Composition ◽  
Progressive Damage ◽  
Network Structures ◽  
Pipeline Transport ◽  
Repair Work ◽  
Structural Applications ◽  
Linear Elements

It is shown that the set of all linear elements of the system can be divided into 5 subsets G1...G5, depending on which specific nodes a particular pipeline connects. It was established that the greatest influence on the growth of resistance index values is exerted by the effect of an increase in the quantitative composition of the subset G1, and the smallest one is the increase in the composition of the subset G5. In this case, the degree of influence decreases with the transition from the elements of the subset G1 to G5. During repair operations, individual fragments or pipelines are usually excluded from the current system. Such structural applications can lead to a situation where accidental damage to several or even one pipeline will lead to disconnection of some consumers from the source. The specified feature should be taken into account when planning, preparing and conducting repair work. The existence of rational and irrational network structures, characterized by the greatest and least resistance to progressive damage, is proved. The planning and organization of repair work of pipeline transport systems is recommended to be carried out with a preliminary assessment of their resistance to progressive damage and taking into account the possibility of using rational network structures.

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