Organization of complex systems for provision of operational reliability of rolling stock

2021 ◽  
pp. 36-41
Author(s):  
Anatoliy Vyacheslavovich Davydov ◽  
◽  
Tatyana Anatolyevna Astakhova ◽  
Keyword(s):  
Life Cycle ◽  
Complex Systems ◽  
Operational Reliability ◽  
State Standards ◽  
Rolling Stock ◽  
High Quality ◽  
Maintenance And Repair ◽  
Transportation Process ◽  
Standard Application ◽  
Quality Production

The use of digital and satellite information systems for the increase of quality and prompt maintenance and repair of rolling stock allows solving important transport tasks. On the modern stage the transportation process sets high requirements to operation of rolling stock that should be regulated by state standards. Modern machinery and technology should promote implementation of high-quality production in order to extend the life cycle of any product that responds the realization of production process. The international practice of standard application convincingly proves it. The paper proposes an organization of complex systems aimed at provision of operational reliability of rolling stock. The authors have determined possible reasons of non-compliance of the standards. As a result, they have set tasks on carrying out modern monitoring and execution of maintenance and repair.

scholarly journals SCIENTIFIC APPROACH TO THE METHODS OF INCREASING THE LIFE CYCLE OF WHEELS OF RAILWAY VEHICLES

2021 ◽  
Vol 1 (38) ◽  
pp. 164-172
Author(s):  
S. Sapronova ◽  
V. Tkachenko ◽  
N. Braikovska ◽  
Y. Zub
Keyword(s):  
Life Cycle ◽  
Traffic Safety ◽  
Technical Condition ◽  
Rolling Stock ◽  
Optimal Parameters ◽  
Maintenance And Repair ◽  
Complete Restoration ◽  
Scientific Approach ◽  
Wheel Profile ◽  
Railway Rolling Stock

The value of the life cycle of rolling stock wheels is determined by the frequency of maintenance, in the process of which the turning is carried out to restore the profiles of the rolling surfaces, or the replacement of completely worn wheels. Traffic safety depends on the technical condition of the wheels of locomotives and wagons. Maintenance and repair of wheelsets accounts for about 30% of all costs of Ukrzaliznytsia's rolling stock repair units. Wheel repair technologies are based on the complete restoration of wheel profiles by turning, using which, their life cycle is reduced, and costs increase by 20% or more. The railways of Ukraine use an outdated, unreasonable, inefficient system of control over the formation of rolling surfaces in operation. Therefore, there is a need to create a scientifically sound approach to methods of extending the life cycle of the wheels of locomotives and wagons while ensuring the safety of railway rolling stock. According to the proposed scientific approach, the wheel profile is restored to optimal parameters, which provides an extended life cycle of wheelsets. As a result of the developed scientific approach the life cycle of wheel pairs will increase by 15… 25% and the expenses of the railway for their repair will considerably decrease.

scholarly journals IMPROVING THE EFFICIENCY OF SERVICE SUBWAY TRAINS

2015 ◽  
Vol 2 (158) ◽  
Author(s):  
Pavlo Kharlamov ◽  
Elmikhan Shabanov
Keyword(s):  
Competitive Environment ◽  
Rolling Stock ◽  
High Quality ◽  
Maintenance And Repair ◽  
Industry Relationship

The extension of the external competitive environment requires searching of new reserves to reducecosts while providing high quality services. The issue of regulating intra-industry relationship on the basis ofoptimizing the costs of operation, maintenance and repair of rolling stock be at this time quite relevant.

INVESTMENTS IN THE LOCOMOTIVE COMPLEX INFRASTRUCTURE. INFRASTRUCTURE NEEDS PLANS AND FORECASTS

2020 ◽  
Vol 1 (4) ◽  
pp. 106-110
Author(s):  
A. G. YEROYAN ◽  
Keyword(s):  
Significant Role ◽  
Rolling Stock ◽  
Infrastructure Development ◽  
Electric Locomotive ◽  
Maintenance And Repair ◽  
Technological Readiness ◽  
Railway Industry ◽  
Locomotive Repair

In connection with the prospects for the development of the railway industry until 2030, a significant role in improving the technological readiness of maintenance and repair of traction rolling stock belongs to diesel, electric locomotive repair and service depots. The article considers the main directions of development and modernization of the locomotive complex infrastructure. Possible methods of financing mechanisms for investment in infrastructure development have been identified.

scholarly journals Building impactful systems-focused simulations: integrating change and project management frameworks into the pre-work phase

2021 ◽  
Vol 6 (1) ◽  
Author(s):  
Mirette Dubé ◽  
Glenn Posner ◽  
Kimberly Stone ◽  
Marjorie White ◽  
Alyshah Kaba ◽  
...  
Keyword(s):  
Project Management ◽  
Complex Systems ◽  
Change Management ◽  
Systematic Approach ◽  
Reflective Learning ◽  
Healthcare Organizations ◽  
High Quality ◽  
Comprehensive Collection ◽  
Enabling Institutions ◽  
Efficient Care

AbstractHealthcare organizations strive to deliver safe, high-quality, efficient care. These complex systems frequently harbor gaps, which if unmitigated, could result in harm. Systems-focused simulation (SFS) projects, which include systems-focused debriefing (SFD), if well designed and executed, can proactively and comprehensively identify gaps and test and improve systems, enabling institutions to improve safety and quality before patients and staff are placed at risk.The previously published systems-focused debriefing framework, Promoting Excellence and Reflective Learning in Simulation (PEARLS) for Systems Integration (PSI), describes a systematic approach to SFD. It includes an essential “pre-work” phase, encompassing evidence-informed steps that lead up to a SFD. Despite inclusion in the PSI framework, a detailed description of the pre-work phase, and how each component facilitates change management, was limited.The goal of this paper is to elucidate the PSI “Pre-work” phase, everything leading up to the systems-focused simulation and debriefing. It describes how the integration of project and change management principles ensures that a comprehensive collection of safety and quality issues are reliably identified and captured.

scholarly journals Numerical Analysis on Performance of the Middle-Pressure Jet Grouting Method for Ground Improvement

Geosciences ◽  
2021 ◽  
Vol 11 (8) ◽  
pp. 313
Author(s):  
Shinya Inazumi ◽  
Sudip Shakya ◽  
Takahiro Komaki ◽  
Yasuharu Nakanishi
Keyword(s):  
Life Cycle ◽  
Comparative Analysis ◽  
Ground Improvement ◽  
Cement Slurry ◽  
Mechanical Agitation ◽  
High Quality ◽  
Jet Grouting ◽  
Computer Aided ◽  
Improvement Method ◽  
Cae System

This study focused on the middle-pressure jet grouting method, which has a complicated development mechanism for the columnar soil-improved body, with the aim of establishing a computer-aided engineering (CAE) system that can simulate the performance on a computer. Furthermore, in order to confirm the effect of middle-pressure jet grouting with mechanical agitation and mixing, a comparative analysis was performed with different jet pressures, the development situation was visualized, and the performance of this method was evaluated. The results of MPS-CAE as one of the CAE systems showed that the cement slurry jet ratio in the planned improvement range, including the periphery of the mixing blade, by the middle-pressure jet grouting together with the mechanical agitation and mixing was increased and a high quality columnar soil-improved body was obtained. It is expected that the introduction of CAE will contribute to the visualization of the ground, and that CAE will be an effective tool for the visual management of construction for ground improvement and the maintenance of improved grounds during the life cycle of the ground-improvement method.

scholarly journals POSTPONING PRODUCT RETIREMENT THROUGH ENGINEERING DESIGN

2011 ◽  
Author(s):  
M. Hashemian ◽  
P. Gu
Keyword(s):  
Life Cycle ◽  
Environmental Impacts ◽  
Design Research ◽  
Working Condition ◽  
Environmental Design ◽  
Normal Operation ◽  
Production Volume ◽  
Maintenance And Repair ◽  
Adaptable Design ◽  
Requirements Change

The environmental impacts of a product can be reduced in the three phases of its life cycle: production supply chain, service and retirement. The reduction of production volume, especially by extending the service life of existing products would mitigate environmental impacts. Durability, maintenance and repair can prolong normal operation. However, if service requirements change, the product may be retired while still in working condition. In these cases, retirement could be postponed if the product is capable of “adapting” to the new requirements. This paper shows the scope of “postponing retirement” in environmental design research, and discusses the benefits of adaptable design.

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