Research of Dust Environmental Pollution during Construction Works

2018 ◽  
pp. 48-54
Author(s):  
Marina Trokhimchuk ◽  
Margarita Postnova ◽  
Katerina Trokhimchuk
Keyword(s):  
Liquid Waste ◽  
Operating Mode ◽  
Dust Particles ◽  
Main Element ◽  
Dust Collector ◽  
Construction Work ◽  
Additional Energy ◽  
Gis Application ◽  
Sand And Gravel ◽  
Construction Works

The results of studies on the concentration of fine dust concentrations during construction work are presented. A method developed by the authors for modeling the dynamics of air flow and the zone of distribution of impurities, taking into account external non-stationary factors during construction work on the basis of a specialized GIS application, is considered. It is proposed to use in contaminated areas after construction and repair and emergency work of a dust collector, which is aimed at reducing pollution. The main element of the dust-harvesting machine is designed for cleaning hard surfaces, namely from debris, sand and gravel masses, dust particles, estimates and liquid waste. The use of solar collectors in the dust collecting unit allows the dust collecting machine to have a long operating mode, it does not require additional energy resources when the machine is running.

scholarly journals METHODS FOR CALCULATING THE COST OF ENVIRONMENTAL DAMAGE FROM CONSTRUCTION WORKS, AS A METHOD FOR IMPROVING THE EFFECTIVENESS OF ENVIRONMENTAL SAFETY IN CONSTRUCTION

2020 ◽  
Author(s):  
S.E. Manzhilevskaya ◽  
Keyword(s):  
Economic Assessment ◽  
Environmental Safety ◽  
Dust Particles ◽  
Environmental Damage ◽  
Construction Work ◽  
Calculation Methods ◽  
Additional Costs ◽  
Local Construction ◽  
The Cost ◽  
Construction Works

The article analyzes methods for calculating the cost of environmental damage from construction work. Under the damage caused to the national economy by dust emissions from local construction and from other sources, they mean the additional costs necessary to eliminate the effects of air pollution. The analysis of the influence of fine dust particles emitted during repair, construction and decoration works air in the urban environment and the working area. Calculation methods and methods for the economic assessment of the cost of harm caused by construction production to the environment are proposed.

IMPROVING THE EFFICIENCY OF THE VORTEX DUST COLLECTORS

2018 ◽  
Vol 8 (3) ◽  
pp. 39-42
Author(s):  
Svetlana M. PURING ◽  
Denis N. VATUZOV
Keyword(s):  
Energy Consumption ◽  
Venturi Tube ◽  
Dust Particles ◽  
Dust Collector ◽  
Effi Ciency ◽  
Inner Surface ◽  
Separation Chamber ◽  
Secondary Air ◽  
Reducing Energy ◽  
Made In

It is proposed to use a modernized “wet” vortex dust collector for cleaning ventilation emissions from non-adhering dust. The design of the vortex dust collector contributes to its effi ciency by installing irrigation nozzles in the primary and secondary air connections made in the form of a Venturi tube, which allows reducing energy consumption during the cleaning of dusty air. Due to the multidirectional movement of dust particles and splashed water, active coagulation of dust particles and water particles occurs, as well as a liquid fi lm is formed on the inner surface of the separation chamber, which prevents the dust particles from rebounding from the separation chamber and facilitates their collection and washing into a collecting bin.

scholarly journals Organizational and technological parameters of facade works and influencing factors

2021 ◽  
Vol 263 ◽  
pp. 04054
Author(s):  
Mukhammet Fakhratov ◽  
Ibrahim Fadhil
Keyword(s):  
Construction Management ◽  
Point Of View ◽  
Design Stage ◽  
Technological Changes ◽  
Construction Work ◽  
Technological Parameters ◽  
Different Dimensions ◽  
Technical And Economic Indicators ◽  
Selection Of ◽  
Construction Works

The article deals with the organizational and technological features of construction. The organization of construction production for the installation of facade systems with an air gap during the construction of buildings is associated with coordination with general construction works. Often, construction management projects developed at the design stage are adjusted taking into account the current conditions. These changes can occur both before the start of work and during the production of work. The introduction of organizational and technological changes in the production process of work can lead to a significant decrease in technical and economic indicators. In this regard, it is relevant to resolve the issues of assessment and selection of effective organizational and technological solutions for the device of facade systems. The difficulty is the assessment of factors with different dimensions of quantitative and qualitative indicators. Installation of facade systems is a work performed in the open air, in connection with which there are factors that have a rather strong influence on the complexity of the work. In addition, as with any other construction work, it depends on the completion of other construction work. Another important feature of the organization of facade work is the orientation of the work front in the unfamiliar plane of the building. The study of this type of work is relevant and is of interest from a scientific point of view, not only in matters of constructive solutions for and organization of work and the use of appropriate machines and mechanisms. A well-grounded choice of technological equipment and the number and qualification of workers will increase the performance of work.

scholarly journals Quality consideration of building and renovation works while forensic structural inspections to determine the volume and cost of construction

2021 ◽  
Vol 23 (1) ◽  
pp. 236-245
Author(s):  
T. Dudnyk ◽  
L. Chintea
Keyword(s):  
Building Codes ◽  
Construction Work ◽  
Field Surveys ◽  
Quality Of Work ◽  
Physical Volume ◽  
The Cost ◽  
Cost Of Construction ◽  
Construction Works

Currently, forensic methods and regulations in the field of construction do not explain how quality of work affects the procedure of forensic examinations and research related to determining the work scope. While carrying out building and renovation services, it is possible to control provided construction and renovation services,  establish their physical volume and quality. While research, forensic expert can identify violations of building codes, as well as determine the cost of refurbishment or elimination of defects made providing services. The scoop of performed works is determined by geometric parameters of construction elements, established during field surveys using design and as-built documentation. While carrying out field surveys, it is necessary (along with the determination of service scope) to pay attention to the compliance of the work performed with the requirements of building codes. The article outlines problematic issues and provides a list of basic indicators determining the scoop and quality of the construction works carried out, indicated in the reporting documentation drawn up by contractors based on results of activities in the field of construction. Actual issue arising in the establishment of the scoop and cost of construction work is considered  that quality does not meet the requirements of regulatory documents in the field of construction. It is explained how the quality of the work performed affects the results of research related to the determination of the actually completed volumes of repair, building and renovation and construction work.

Comparative Analysis of Singapore High-Risk Construction Work Permit-to-Work Mechanism with China Management Mechanism of Section(Subsection) Works with Major Hazards

2012 ◽  
Vol 256-259 ◽  
pp. 3003-3007
Author(s):  
De Ming Yu ◽  
Xiao Bin Jia
Keyword(s):  
High Risk ◽  
Safety Management ◽  
Workplace Safety ◽  
Construction Work ◽  
Management Mechanism ◽  
Work Permit ◽  
Safety And Health ◽  
Safety Production ◽  
Risk Construction ◽  
Construction Works

Mainly based on Singapore’s workplace safety and health (construction) regulations 2007 and China’s safety management measures for section(subsection) works with major hazards 2009, the paper introduces and analyzes the Singapore’s safety management system for high-risk construction works, and simply compares it with the management mechanism of China’s section(subsection) works with major hazards, the following conclusions are drawn: (1) The application scopes of Singapore’s high-risk construction work permit-to-work system and China’s the management mechanism of section(subsection) works with major hazards are different, and generally speaking, the former includes more construction works than the latter. (2) The mechanisms of Singapore’s high-risk construction work permit-to-work and China’s management of section/ subsection works with major hazards are different. (3) In Singapore no independent construction safety supervision system exists, while in China it is usually required by the laws. (4) In Singapore any person who contravenes any provision of workplace safety and health (construction) regulations 2007 which imposes a duty on him shall be guilty of an offence and may be liable on conviction to imprisonment for a term not exceeding 2 years; in China any person who contravenes any provision of safety production law, building law and corresponding safety regulations but doesn’t lead to serious consequences shall not be liable on conviction to imprisonment. (5) In Singapore the safety assessor evaluating and endorsing the application for a permit-to-work must assume his lawful duty for his undue conducts and decisions, in China the safety experts responsible for checking the special safety construction scheme needn’t assume any lawful duty.

scholarly journals Ways of Developing Priorities for the Development of Small Business and Private Enterprise the Construction Sphere

2021 ◽  
Vol 7 (1) ◽  
pp. 335-339
Author(s):  
A. Abdullaev
Keyword(s):  
Small Business ◽  
Construction Industry ◽  
Industrial Development ◽  
Annual Growth Rate ◽  
Construction Sector ◽  
Construction Work ◽  
Factors Affecting ◽  
Fixed Assets ◽  
Investment In Fixed Assets ◽  
Construction Works

This article discusses scenarios for determining priorities and prospects for the development of small business and private entrepreneurship in the construction industry, and also gives recommendations for increasing the volume of construction work. Thus, according to our analysis, the main factors affecting the development of the construction industry in the Tashkent region are industrial development, nominal wages, population and investment in fixed assets, and the main difference in these indicators in regional units is considered a serious problem. According to the results of the developed scenario, reducing the gap between these indicators in regional units will increase the annual growth rate of construction and installation work from 10.1% to 23.9%, which, in turn, will increase the number of builders in the construction sector by 242 units. As a General conclusion, the organization of payments between the manufacturer and the customer when purchasing products in the construction industry affects the development of the network, as well as CBS. In addition, gradual payment by the customer based on payment for completed construction works will play an important role in the development of market legislation in the industry, the elimination of monopolies and the development of IFRS.

scholarly journals CALCULATION PROGRAM FOR THE PROCESSING OF LOW-CONCENTRATED TRITIUM AND DEUTERIUM WASTE THROUGH THE CECE ISOTOPIC SEPARATION PROCESS

2021 ◽  
Vol 24 (2) ◽  
pp. 97-107
Author(s):  
Anisia Bornea ◽  
◽  
Marius Valentin Zamfirache ◽  
Keyword(s):  
New Technology ◽  
Isotope Separation ◽  
Liquid Waste ◽  
Numerical Data ◽  
Operating Mode ◽  
Separation Process ◽  
Separation Processes ◽  
Process Solution ◽  
Innovative Solution ◽  
Isotopic Separation

Within the research conducted at our Institute of Cryogenic and Isotopic Technologies (ICSI), is developed a project entitled "Innovative CECE process solution to promote a new technology for decontamination of liquid waste, tritium low concentrated and deuterium recovery”. The main objective of the project carried out within our team is to promote an innovative solution of CECE isotopic separation process (Combined Electrolysis and Catalytic Exchange), part of a new technology for decontamination of liquid waste, poorly concentrated in tritium, generated by nuclear reactors, ensuring increased recovery of the isotope deuterium and tritium. This paper presents the current stage of an innovative CECE isotopic separation process solution, and also the mathematical model developed for the simulation of hydrogen isotope separation processes through the CECE process and a theoretical analysis based on numerical data resulting from the simulation of two CECE plant operating mode.

scholarly journals Energy Efficient Air Conditioning System of the Temple Complex

2020 ◽  
Vol 324 ◽  
pp. 03006 ◽  
Author(s):  
Anton A. Zharov ◽  
Alexey V. Kasatkin
Keyword(s):  
Energy Efficient ◽  
Air Conditioning ◽  
Geographical Location ◽  
Operating Mode ◽  
Main Element ◽  
Modes Of Operation ◽  
Air Conditioning System ◽  
Mutual Correlation ◽  
Temple Complex ◽  
The Temple

The purpose of this work is to develop a year-round energy-efficient air conditioning system for the temple complex, that meets modern engineering requirements and standards. And it should not violate the traditional appearance of an Orthodox church. In this article there are considered the requirements and standards for the construction of the temple complex together with the architectural solution and the geographical location of the construction entity. The proposed air conditioning system (ACS) with a pneumohydraulic diagram and design modes is described. This system is valid for the summer and winter seasons. The main element of the ACS of the temple complex is an array of heat pipes. The efficiency of the installation is achieved, first of all, due to the recovery of soil heat in the annual cycle. In addition, efficiency is increased by utilizing the heat of the waste air stream and indoor recirculation systems. The article represents a constructive solution for the proposed heat pipe and its design modes of operation in the summer and winter periods together with the expected technical characteristics in different modes of operation, as well as design options for the upper heat exchanger. There is given the concept of the arrangement of the elements of the pneumohydraulic diagram on the cartographic plan of the building and their mutual correlation with the intensity of the operating mode for the soil. And the last, but not least, the article represents a simulation of the annual soil regime, calculated by the finite element method, performed in the ANSYS computational environment.

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