THE TECHNICAL CONDITION OF THE SURVEYED HYDRAULIC UNITS IN THE MOSCOW REGION AND THE CLASSIFICATION FEATURES OF THEIR RESERVOIRS

2021 ◽  
pp. 69-79
Author(s):  
V. V. GRITSAN ◽  
Keyword(s):  
Technical Condition ◽  
Moscow Region ◽  
Risk Level ◽  
Ecological Framework ◽  
Safety Level ◽  
Repair Work ◽  
Hydraulic Unit ◽  
Technical Parameters ◽  
Characteristic Features ◽  
The Cost

The article presents the results of surveys of 311 class IV hydraulic structures carried out in 2016-2020 in the Moscow region. All the reservoirs of the surveyed hydraulic units were classified according to their characteristic features, the technical condition of culverts and dams was assessed, there was established the safety level of both separate structures and hydraulic units as a whole. During the surveys, the technical parameters of the surveyed structures were established, the state of each structure and the hydraulic unit as a whole was assessed, a possibility of their accident and a risk level for the downstream areas were considered. At the same time, recommendations were developed for the elimination of serious damage and, with the help of an examination, the amount of the cost of the necessary repair work was determined. The paper also assesses the issues of the ecological state of the areas where the hydraulic units are located and the hydraulic units themselves as blocks of the ecological framework of the territories.

scholarly journals Digitalizing the Process of Tracking Technical Condition of the Main Equipment of Energy Providing Enterprises

2021 ◽  
Vol 93 ◽  
pp. 01020
Author(s):  
Lyudmila Plotnikova ◽  
Artem Bainov ◽  
Yulia Torkunova ◽  
Maria Nadezhdina
Keyword(s):  
Power Plants ◽  
Thermal Power ◽  
Complete Information ◽  
Condition Index ◽  
Technical Condition ◽  
Direct Access ◽  
Repair Work ◽  
Technical Parameters ◽  
The Republic ◽  
Low Efficiency

The existing power facilities of the Republic of Tatarstan face a number of disadvantages related to the system for recording data on the technical condition of boiler and turbine equipment: manual calculation of the parameters of equipment operation, lack of direct access to complete information on the condition of equipment and, as a result, low efficiency in identifying malfunctions, deviations in the operation of equipment, carrying out repair work. Hence, the need for digitalization of the system for recording data on the technical condition of equipment was formed, in response to which software was developed for automating the data recording system and visualizing the technical parameters of reliability at thermal power plants. This proposal is distinguished by the introduction of digital technologies in the process of recording data on the technical condition of equipment, where for the first time the software includes a method for automatically calculating the technical condition index of boiler units. The results of the work will reduce the likelihood of an emergency state of power plant equipment.

scholarly journals General principles of ground of efficiency of informatively-measuring technologies in the process of exploitation of objects of the real estate

2021 ◽  
Vol 41 (I) ◽  
pp. 74-85
Author(s):  
P. HRYHOROVSKYI ◽  
◽  
N. CHUKANOVA ◽  
YU. KROSHKA ◽  
I. OSADCHA ◽  
...  
Keyword(s):  
Life Cycle ◽  
Real Estate ◽  
Technical Condition ◽  
Comparative Assessment ◽  
Practical Significance ◽  
Labor Costs ◽  
Repair Work ◽  
The Real ◽  
The Real Estate ◽  
Instrumental Measurement

Aim of this work – to set forth general principles of ground of efficiency of informatively-measuring technologies in the process of exploitation of objects of the real estate. Methodology. The method of substantiating the effectiveness of the restoration of the technical condition of real estate in the process of their operation is based on the use of information and measurement technologies to establish the technical condition of the object, which is a combination of information retrieval methods, instrumental measurement, analysis and processing of such information, technological and technical solutions to ensure the operational suitability of the facility in conditions of uncertainty. The method involves the formation of a repair strategy using information and measurement technologies based on the development of the life cycle of repairs and algorithms for selecting options for instrumental monitoring systems, choosing the procedure for studying the duration of measurement work, justification of labor and information technology costs and comparative assessment of total costs of real estate object. Results. It is established that measuring works are an integral part of the process of operation and repair work in its composition, which are carried out according to a single schedule of operation of the building and are part of repair work, and the frequency and volume of measuring, including geodetic work correlate with. To plan the volume of measuring work, their duration and labor costs are determined on the basis of existing time norms, and in their absence – by methods of technical rationing. Substantiation of the effectiveness of information and measurement technologies in the operation of real estate is performed by comparative assessment of total costs during the operational stage of its life cycle, taking into account the costs of implementing information and measurement technologies, that is the set of processes for obtaining information by instrumental measurement and processing ‘effective conclusion on the technical condition of the property. The scientific novelty of the obtained results is in the development of general principles for substantiating the effectiveness of information and measurement technologies in the operation of real estate. The practical significance lies in the improvement of standard solutions for the choice of composition and content of information and measurement technologies, taking into account their impact on the duration and labor costs of all types of repairs and reconstruction.

scholarly journals Modelling and forecasting of quasi-periodic processes in technical objects based on cylindrical image models

2019 ◽  
pp. 387-393
Author(s):  
V R Krasheninnikov ◽  
Yu E Kuvayskova
Keyword(s):  
Time Series ◽  
Technical Condition ◽  
The State ◽  
Effective Management ◽  
Hydraulic Unit ◽  
Forecasting Models ◽  
Periodic Processes ◽  
Image Models ◽  
Accuracy Of Prediction ◽  
Modelling And Forecasting

Accurate forecasting of the state of technical objects is necessary for effective management. The technical condition of the object is characterized by a system of time series of monitored indicators. The time series often have difficultly predictable irregular periodicity (quasi-periodicity). In this paper, to improve the accuracy of such series forecasting, models of quasi-periodic processes in the form of samples of a cylindrical image are used. The application of these models is demonstrated by forecasting of a hydraulic unit vibrations. It is shown that the use of these models provides a higher accuracy of prediction compared with the classical approaches.

scholarly journals RISK AND SAFETY LEVEL ASSESSMENT OF SHIP – BRIDGE COLLISION

2020 ◽  
Vol 1 (22) ◽  
pp. 11-21
Author(s):  
A. A. Golikov ◽  
◽  
J. A. Oleynik
Keyword(s):  
Water Area ◽  
Maritime Industry ◽  
Full Spectrum ◽  
Safety Level ◽  
Inland Waterways ◽  
City Environment ◽  
Navigation Strategy ◽  
Modern Level ◽  
The Cost ◽  
Bridge Spans

Bridges located on maritime and inland waterways are defenseless objects of infrastructure. One of their main features is the restriction of navigation channels, both vertically and horizontally, while navigation conditions may often be challenged by unpredictable currents and whirlpools. A great threat to people and vehicles on or near the structure occurred in case of a collision with ships and the destruction of bridges. Also, the consequences of such accidents are considerable financial expenses, where the cost of the bridge is usually much more than the cost of the vessel itself. The article addresses the issue of types, factors, causes and consequences of ship-bridge collision accidents. In spite of the modern level of development in the maritime industry such accidents occur annually, thus this problem is considered to be relevant nowadays. It is necessary to take measures to increase the safety of navigation in appropriate zones. The article presents the procedure for assessing the level of safety and the stages of identifying risks by determining the probability of a collision with bridge spans, supports and other structures, also identifying the most defenseless places, as well as the possible consequences of such damage (ship, city, environment). In addition, the paper considered the methods of protecting the bridge from collision and methods for reducing navigational risk. The results of the research are the development of the recommendations for avoiding possible dangers, mitigation of consequences, and reducing risks of vessel-bridge collision. It is proposed to form an “intellectual” zone in the navigable water area under the bridge to minimize the risks and consequences of an emergency. As a basic concept, it is recommended to use foreign and domestic experience in implementing the e-navigation strategy in the coastal zone and in the operational VTS areas. The article describes the implementation of modern marine technologies, such as virtual navigation aids and technologies of additional reality, which will significantly improve monitoring of the environment. Therefore, this introduction will reduce the risk of an emergency. Ensuring the full spectrum of available methods is necessary to determine risk and protect bridges from accidents. Such an approach shall allow not only to assess the risk of ship-bridge collision, but also to introduce additional active control elements during navigation in dangerous zones.

scholarly journals Risks assessment in terms of OHS for critical power infrastructures in context of industrial safety

2021 ◽  
Vol 343 ◽  
pp. 10020
Author(s):  
Dragos Pasculescu ◽  
Nicolae Daniel Fita ◽  
Emilia Grigorie ◽  
Florin Gabriel Popescu ◽  
Alina Daniela Handra
Keyword(s):  
Occupational Health ◽  
Critical Infrastructure ◽  
Health And Safety ◽  
Occupational Health And Safety ◽  
Industrial Safety ◽  
Risk Level ◽  
Global Risk ◽  
Safety Level ◽  
Systemic Analysis ◽  
Power Substation

The aim of occupational health and safety in the context of industrial safety is to provide the national industry with a proper operation state, an ergonomic, optimal and healthy work environment, safe workers and workplaces, safety of industrial processes, to limit and mitigate any unforeseen situation generated by events which might negatively affect the occupational health and safety level. The current paper approaches the risk assessment in terms of occupational health and safety within a cross-border 400/220 kV power substation interconnected to the European power grid, identified and assigned as European critical infrastructure. The assessment is carried out using the INCDPM Bucharest method, in order to establish the risk/safety levels in a quantitative manner, based on a systemic analysis and on the assessment of risks of accidents and professional diseases. The application of the method ends in a workplace assessment sheet which comprises the global risk level of the power substation and which sets the grounds for the plan for preventing accidents and professional diseases within the analysed power substation.

scholarly journals Diagnosis of technical parameters of amplifiers used in sound warning systems

2017 ◽  
Vol 66 (3) ◽  
pp. 99-110
Author(s):  
Jacek Paś
Keyword(s):  
Power Amplifiers ◽  
Warning System ◽  
Fire Detection ◽  
Technical Condition ◽  
Essential Elements ◽  
Technical Parameters ◽  
Alarm Systems ◽  
Life Threatening ◽  
Evacuation Routes ◽  
Working Parameters

The article presents a method of diagnosing the technical conditions of a power amplifier which is used in a sound warning system (SWS). Fire Alarm Systems (FAS) and SWSs are electronic safety systems designed to protect life and health. The FAS is used for effective fire detection, while life-threatening SWSs provide efficient communication of emergency information and evacuation routes via voice. The article presents the problem of diagnosing the technical condition of power amplifiers, which are the essential elements of SWSs. Power amplifiers provide a certain level of undistorted audio (alarm messages) to the speaker set that is arranged in a building supervised by FAS. Keywords: amplifier, audible warning system, working parameters

scholarly journals Algorithms and models of power losses in circuit breakers installed in networks

Vestnik MGTU ◽  
2020 ◽  
Vol 23 (4) ◽  
pp. 345-353
Author(s):  
E. I. Gracheva ◽  
A. N. Gorlov ◽  
A. N. Alimova
Keyword(s):  
Power Supply ◽  
Low Voltage ◽  
Technical Condition ◽  
Active Power ◽  
Operating Conditions ◽  
Public Utility ◽  
Electrical Networks ◽  
Power Losses ◽  
Circuit Breakers ◽  
Technical Parameters

Determination of the main characteristics of the topology and technical condition of equipment underoperating conditions is necessary for analyzing and assessing power and electricity losses in intrashoplow-voltage industrial power supply networks. A comparative analysis of the technical characteristicsof automatic circuit breakers VA57-31 (KEAZ), NSX100 TM-D (Schneider Electric), DPX3 160 (Legrand), Tmax XT1 TMD (ABB) has shown that the main technical parameters of the machines are close in their values. At that it has been found out that automatic switches of the BA57-31 series have the lowest value of power losses per pole (7.5 W), whereas the automatic switches of the Tmax XT1 TMD series have the highest value (10 W). Thus, under the operating conditions of the equipment, the lowest value of power and electricity losses is characteristic of low-voltage electrical networks with installed circuit breakers of the BA57-31 series, and the highest value of losses is noted in in-shop systems with installed circuit breakers Tmax XT1 TMD. Using catalog data, the dependences of active power losses in circuit breakers on rated currents have been established; the algorithms have been developed and the obtained dependences have been modeled using approximating functions. The standard deviation of the compiled approximating functions has been calculated. Analytical expressions of the dynamics of power losses per pole have been determined as a function of the rated current. The graphical dependences of the investigated parameters of low-voltage equipment have been presented. The developed models are recommended to be used to increase the reliability of the assessment and refinement of the amount of active power and electricity losses in low-voltage electrical networks of industrial power supply systems, agrotechnical complexes, and enterprises of the public utility sector.

scholarly journals EFFECTIVENESS EVALUATION OF STEEL STRENGTH IMPROVEMENT FOR PYRAMIDAL-PRISMATIC BUNKERS

2020 ◽  
Vol 2 ◽  
pp. 30-38
Author(s):  
Yukhym Hezentsvei ◽  
Dmytro Bannikov
Keyword(s):  
Low Temperatures ◽  
High Strength ◽  
Operating Conditions ◽  
Professional Literature ◽  
Plastic Properties ◽  
Repair Work ◽  
Practical Engineering ◽  
Cis Countries ◽  
The Right ◽  
The Cost

In accordance with the recommendations of specialized professional literature, steel pyramidal-prismatic bunkers are projected for a service life of 20 years. However, in practice this term is often twice, or even three times lower. This is especially true for complicated operating conditions, in particular the effect of increased loads and low temperatures. Existing design techniques for such structures, both in European practice and the design practice of Ukraine and other CIS countries do not pay attention to these aspects. Therefore, in the practice of operation, the increased accident rate of steel bunker capacities has already become virtually a common occurrence. One of the possible ways to solve this problem is presented, which consists of using instead of traditional steels of ordinary strength with high plastic properties, steels of increased or high strength with reduced plastic properties. At the same time, clear theoretical recommendations are provided for choosing the right steel depending on the operating conditions, primarily when exposed to increased loads. The recommendations are presented in a form convenient for practical engineering applications. The proposed approach allows to reduce the material consumption of structures of this type on average according to theoretical estimates by 25-30% without reducing their bearing capacity. Their durability is also further enhanced by improving performance at low temperatures. Thus, the applied aspect of such a solution to this above problem is the possibility of increasing the overall reliability of steel bunker capacities, as well as reducing the cost of their periodic maintenance and repair work. A practical illustration of the presented approach is also given on the example of the design of bunkers of a bypass track for supplying charge materials for blast furnaces of one of the metallurgical plants of the northern location. As a result, this created the preconditions for monetary savings of about 0.5 million UAH in prices 2019 (about 20,000 USD)

ABOUT THE RESULTS OF COMPARISON OF THE PROJECTS OF THE «EURASIA» AND «VOLGO-DON 2» CANALS CCORDING TO THE MAIN TECHNICAL PARAMETERS

2021 ◽  
pp. 85-91
Author(s):  
I. M. GALIMOV ◽  
◽  
S. N. LEVACHEV ◽  
E. A. AGAFONOVA ◽  
D. D. ALEXANDROVA
Keyword(s):  
Water Transport ◽  
Caspian Sea ◽  
Industrial Development ◽  
The Caspian Sea ◽  
Design Decisions ◽  
Technical Parameters ◽  
Central Asian ◽  
International Transport ◽  
The Cost ◽  
Cost Of Transportation

The purpose of this article is to compare major infrastructure projects of the water transport connection between the Caspian Sea and the Azov-Black Sea basin –the «Eurasia» canal and the «Volgo-Don 2» canal on the following parameters of comparison: the height of the watershed, the length of the canals, water supply of canals, the conditions and intensity of navigation. The need to build a new shipping canal is due to the projected increase in the volume of cargo transportation from the Caspian Sea that will cause difficulties in the existing Volgo-Don canal. The authors of the study have analyzed and summarized the research materials containing information about the design decisions on the «Eurasia» canals and the second branch of the Volgo-Don shipping canal. Realization of the project canal «Eurasia» will significantly decrease the delivery time of cargoes, including oil from the Caspian Sea and Central Asian countries to the Black and Azov sea; cut the cost of transportation between these regions in comparison with transportation by «VDSC2» (by reducing the length of the waterway); increase in the strategic plan the reliability and safety of water transport links of the two seas basins on parallel directions; create conditions for socio-economic and industrial development of the canal region s. adjacent to the track. In the case of «VDSC-2», the following prospects for construction are highlighted: to ensure the passage of the additional cargo flow expected in connection with the growth of industrial production in Russia in recent years and the corresponding increase in the traffic of industrial and agricultural goods by water transport; to strengthen Russia’s political and economic infl uence on the countries of the southeast region and the European community; to intensify the development of the domestic shipbuilding to create a specialized fl eet for effi cient operation in the conditions of international transportation on internal and external waterways; to increase capacity and, consequently, the economic efficiency of the operation of international transport corridors «North-South» and «East-West».

Sign in / Sign up

Export Citation Format

Share Document