The improved methodology for calculating elements for fastening suspended pipes at installing explosion-proof bulkheads

2020 ◽  
pp. 160-171
Author(s):  
S.P. Мinieiev ◽  
◽  
V.Ye. Maltseva ◽  
I.B. Belikov ◽  
I.А. Ignashov ◽  
...  
Keyword(s):  
Shock Wave ◽  
Practical Implementation ◽  
Joint Stock Company ◽  
Structural Elements ◽  
Stock Company ◽  
Normative Documents ◽  
Labor Content ◽  
Actual Load ◽  
Arch Support ◽  
Theoretical Mechanics

The authors reviewed and improved the methodology for calculating fastening elements of the suspended pipes in the explosion-proof bulkhead, when it is exposed to a shock wave, with taking into account influence of angles of the fastening element inclination relatively to the vertical and horizontal planes of the roadway. For determining forces in the fastening elements of the suspension with accounting influence of angles of vertical and horizontal working planes, and for choosing a suspended pipe fastening bearing the greatest load, three types of the suspended pipe fastening were considered for mounting explosion-proof bulkheads in the belt road 2, longwall №10, of the private joint-stock company “Pokrovskoye”. A scheme is proposed for calculating the suspended pipe elements to be fastened to the structural elements of the arch support. By applying an analytical method based on the laws and regulations of theoretical mechanics, a coefficient k formula is given, which takes into account angles of the elements fastening relatively to the horizontal and vertical planes with the view of obtaining more accurate calculation of the forces acting in the elements of the suspended pipes fastened to the elements of arch support and choosing proper diameters for them in the existing normative documents. In the article, three schemes of the suspended pipe fastening are considered. An actual load on the suspended pipe fastening elements are calculated with accounting coefficient k, and discontinuity of the fastening elements are calculated for the three types of the suspended pipe fastening and their chosen sections. The proposed types of fastening of suspended pipes in the explosion-proof bulkheads and their calculation will allow the head of an accident liquidation service to choose the type most suitable for practical implementation in specific circumstances and, therefore, to improve safety of miners. On the basis of the considered types of suspended pipes fastening to the structural elements of the arch support and calculation of the occurred reactionary efforts caused by the shock wave, the authors of the article recommend to fasten suspended pipes by six chains because this type is more reliable and requires essentially less labor content when making the fastening elements for the suspended pipe by using combine or conveyor chains available at the mine.

scholarly journals Analysis of measures to enhance energy efficiency and sustainable development of the gas transmission system of Ukraine

2019 ◽  
Vol 2 (1) ◽  
pp. 432-440
Author(s):  
Ihor V. Rybitskyi ◽  
Mykyta B. Slobodyan ◽  
Galyna M. Kogut ◽  
Vasyl Ya Popovych ◽  
Maksym O. Karpash
Keyword(s):  
Energy Efficiency ◽  
Sustainable Development ◽  
Renewable Energy ◽  
Renewable Energy Sources ◽  
Energy Resources ◽  
Energy Sources ◽  
Joint Stock Company ◽  
Stock Company ◽  
Normative Documents ◽  
Improve Energy Efficiency

Abstract The requirements of the fundamental normative documents in Public Joint Stock Company “UKRTRANSGAS”, regulating activities in the sphere of energy efficiency, are considered and analyzed. The procedure for implementation of energy saving measures and controlling over their implementation is presented. The analysis of planned and actual indicators of fuel and energy resources saving has been carried out. The ways to improve energy efficiency with the use of renewable energy sources are given.

Studying Demand for Institutes of Corporate Governance: Legal Aspects

2003 ◽  
pp. 50-61 ◽  
Author(s):  
T. Medvedeva ◽  
A. Timofeev
Keyword(s):  
Corporate Governance ◽  
Legal Aspects ◽  
Joint Stock Company ◽  
Federal Law ◽  
Stock Company ◽  
Open Joint Stock Company ◽  
Open Joint ◽  
Market Relations ◽  
Corporate Legislation

The article analyzes legal aspects of institutes of corporate governance. Different draft laws "On Joint-Stock Companies" are considered which reflected interests of separate groups of participants of market relations. Stages of property redistribution are outlined. The advantages of the model of the open joint-stock company are formulated. Special attention is paid to the demand for legal institutes of corporate governance as well as to the process of accepting the Federal Law "On Entering Amendments to the Federal Law "On Joint-Stock Companies"" which was enacted in 2002. The article contains proposals directed at improvement of corporate legislation.

Assessment of professional risk of health of workers of the enterprise for repair of railway carriage

2020 ◽  
pp. 9-19
Author(s):  
O. Klepikov ◽  
A. Boreyko ◽  
G. Kurenkova
Keyword(s):  
Relative Risk ◽  
Working Conditions ◽  
Light Level ◽  
Occupational Risk ◽  
Rolling Stock ◽  
Joint Stock Company ◽  
Stock Company ◽  
Production Factors ◽  
Object Of Study ◽  
High Level

The aim of the study was to assess the professional risk of developing diseases in workers of the railway car repair enterprise. The Voronezh Car Repair Plant, a branch of Vagonremmash Joint-Stock Company, was chosen as the object of study. Methods: «The methodology for calculating individual occupational risk depending on the working conditions and the health status of the employee», developed by the Klin Institute for Protection and Working Conditions in conjunction with the Research Institute of Occupational Medicine (2013), the main professions; cohort study with the calculation of the relative risk of morbidity with temporary disability, the odds ratio, the etiological share of factors in the formation of morbidity (group size: 250 people, experimental group — workers of the main specialties, 95 people — comparison group). Results. According to the research results, the priority factors of occupational health risk include: chemical, noise, heating microclimate, low light level. For certain professions, the share of the contribution of priority factors to the risk profile (PV) reaches 40 %. The indicator of individual occupational risk is 0.12 to 0.26 units. The high level of professional risk (0.22 ÷ 0.26) is characterized by the working conditions of the mechanics for the repair of rolling stock, machine tools (woodworking), casters (metal), thermists, plastic casters. In professional groups with medium and high risk, the indicator of the relative risk of morbidity with temporary disability is higher than 1 (RR = 1.75 and 1.39, respectively), and the etiological share of production factors in the formation of diseases is from 27.95 (subgroup with secondary professional risk) up to 42.88 % (a subgroup with high professional risk), which indicates the professional condition of the disease. Discussion. In general, our data are consistent with the results of similar studies conducted earlier at the car building and car repair enterprises. In order to ensure hygienically safe working conditions and preserve the health of workers, it is necessary to reduce the level of exposure to production factors, including through the introduction of modern equipment and improvement of technological processes.

EVALUATION OF THE FINANCIAL STABILITY OF THE INSURANCE ORGANIZATION

2020 ◽  
pp. 68-78
Author(s):  
Oleg Georgievich Blazhevich
Keyword(s):  
Capital Structure ◽  
Financial Stability ◽  
Load Level ◽  
Joint Stock Company ◽  
Insurance Company ◽  
Working Capital ◽  
Stock Company ◽  
Ability To Pay ◽  
Essential Component ◽  
Equity Ratio

The article studies the financial stability of a particular insurance organization. The financial stability of the insurance company is an essential component of its activities and characterizes the ability to pay off its obligations on time and in full. The analysis of financial stability is defined as an independent object of evaluation, which explores the structure of the formation and use of capital. To assess the financial stability of the insurance company, a set of indicators was formed, including the following ratios: level of equity, ratio of equity to liabilities, ratio of insurance premiums and insurance reserves, ratio of working capital and non-current capital, level of permanent capital, ratio of equity and insurance reserves, level of debt load, level of insurance reserves. The insurance public joint-stock company RESO-Garantia was chosen as the object of analysis. The analysis showed that the capital structure in the insurance company under consideration is not optimal. The company has a shortage of insurance reserves, which is offset by equity.

scholarly journals Evaluation of the Quality of Irrigation Machinery by Monitoring Changes in the Coefficients of Uniformity and Non-Uniformity of Irrigation

Agronomy ◽  
2021 ◽  
Vol 11 (8) ◽  
pp. 1499
Author(s):  
Ján Jobbágy ◽  
Peter Dančanin ◽  
Koloman Krištof ◽  
Juraj Maga ◽  
Vlastimil Slaný
Keyword(s):  
Repeated Measurements ◽  
Joint Stock Company ◽  
Stock Company ◽  
Uniformity Coefficient ◽  
Quality Of Work ◽  
Total Length ◽  
Irrigation Uniformity ◽  
Wide Range ◽  
The Impact

Recently, the development of agricultural technology has been focused on achieving higher reliability and quality of work. The aim of the presented paper was to examine the possibilities of evaluating the quality of work of wide-area irrigation machinery by monitoring the coefficients of uniformity and non-uniformity of irrigation. The object of the research was pivot irrigation machinery equipped with sprinklers with a total length from 230 to 540 m. The commonly applied quality of work parameter for wide-range irrigators is the irrigation uniformity coefficient according to Heermann and Hein CUH. Work quality evaluations were also carried out through other parameters applicable in practice, such as irrigation uniformity coefficients calculated according to Christiansen CU, Wilcox and Swailes Cws, and our introduced parameters, the coefficient ar (derived from the degree of unevenness according to Oehler) and the degree of uniformity γr (derived from the degree of non-uniformity according to Voight). Other applied parameters for determining the quality of work of wide-range irrigation machinery were the coefficients of irrigation uniformity according to Hart and Reynolds CUhr, further according to Criddle CUcr and subsequently according to Beale and Howell CUbr. Next, the parameters of the non-uniformity coefficient according to Oehler a, the coefficient of variation according to Stefanelli Cv, the degree of non-uniformity according to Voigt γ and the degree of non-uniformity according to Hofmeister Ef were evaluated. Field tests were performed during the growing season of cultivated crops (potatoes, corn and sugar beet) in the village of Trakovice (agricultural enterprise SLOV-MART, southwest of the Slovakia) and in the district of Piešťany (Agrobiop, joint stock company). During the research, the inlet operating parameters (speed stage, inlet pressure, irrigation dose), technical parameters (number of sprayers, total length, number of chassis) and weather conditions (wind speed and temperature) were recorded. The obtained results were examined by one-way ANOVA analysis depending on the observed coefficient or input conditions and subsequently verified by Tukey and Duncan tests as needed. Irrigation uniformity values ranged from 67.58% (Cws) to 95.88% (CUbh) depending on the input conditions. Irrigation non-uniformity values ranged from 8.58 (a, Ef) to 32.42% (Cv). The results indicate a statistically significant effect of the site of interest and thus the impact of particular field conditions (p < 0.05). When evaluating the application of different coefficients of irrigation uniformity, the results showed a statistically significant effect only in the first test (p = 0.03, p < 0.05). During further repeated measurements, the quality of work increased due to the performed inspection of all sprayers and the reduction in the influence of the wind.

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