Part II. Partnering in a railway infrastructure maintenance contract: a case study

2004 ◽  
Vol 10 (4) ◽  
pp. 248-253 ◽  
Author(s):  
Ulla Espling ◽  
Ulf Olsson
Keyword(s):  
Railway Infrastructure ◽  
Infrastructure Maintenance

Maintenance analytics for railway infrastructure decision support

2017 ◽  
Vol 23 (3) ◽  
pp. 310-325 ◽  
Author(s):  
Stephen Mayowa Famurewa ◽  
Liangwei Zhang ◽  
Matthias Asplund
Keyword(s):  
Decision Support ◽  
Anomaly Detection ◽  
Practical Implication ◽  
Measurement Data ◽  
Content Type ◽  
Rail Wear ◽  
Railway Infrastructure ◽  
Maintenance Decision ◽  
Infrastructure Maintenance

Purpose The purpose of this paper is to present a framework for maintenance analytics that is useful for the assessment of rail condition and for maintenance decision support. The framework covers three essential maintenance aspects: diagnostic, prediction and prescription. The paper also presents principal component analysis (PCA) and local outlier factor methods for detecting anomalous rail wear occurrences using field measurement data. Design/methodology/approach The approach used in this paper includes a review of the concept of analytics and appropriate adaptation to railway infrastructure maintenance. The diagnostics aspect of the proposed framework is demonstrated with a case study using historical rail profile data collected between 2007 and 2016 for nine sharp curves on the heavy haul line in Sweden. Findings The framework presented for maintenance analytics is suitable for extracting useful information from condition data as required for effective rail maintenance decision support. The findings of the case study include: combination of the two statistics from PCA model (T2 and Q) can help to identify systematic and random variations in rail wear pattern that are beyond normal: the visualisation approach is a better tool for anomaly detection as it categorises wear observations into normal, suspicious and anomalous observations. Practical implications A practical implication of this paper is that the framework and the diagnostic tool can be considered as an integral part of e-maintenance solution. It can be easily adapted as online or on-board maintenance analytic tool with data from automated vehicle-based measurement system. Originality/value This research adapts the concept of analytics to railway infrastructure maintenance for enhanced decision making. It proposes a graphical method for combining and visualising different outlier statistics as a reliable anomaly detection tool.

Systematic risk-analysis to support a living maintenance programme for railway infrastructure

2017 ◽  
Vol 23 (3) ◽  
pp. 326-340
Author(s):  
Peter Söderholm ◽  
Terje Nilsen
Keyword(s):  
Single Case ◽  
Research Strategy ◽  
Single Case Study ◽  
Content Type ◽  
Study Approach ◽  
Railway Infrastructure ◽  
Mode Of Transport ◽  
Infrastructure Maintenance ◽  
Maintenance Programme

Purpose The purpose of this paper is to describe an application of an effective risk-based methodology to support a living maintenance programme for railway infrastructure. Design/methodology/approach The overall research strategy is a single case study of switches and crossings at the Iron Ore Line in northern Sweden. The analysis was performed as a risk workshop guided by a methodology that integrates reliability-centred maintenance and barrier analysis. Findings The applied methodology is valuable to systematise and improve the existing maintenance programme, as well as supporting a continued living maintenance programme. Research limitations/implications The single case study approach may decrease the validity of the achieved results. However, similar case studies corroborate the results, which affect the validity in a positive way. Practical implications The resulting maintenance programme is effective, through compliance with external requirements, and more efficient, through improvements of tasks and intervals. Social implications An enhanced railway infrastructure maintenance programme contributes to improved safety, punctuality, and costs. Hence, railway becomes a more attractive mode of transport. Thereby, it also supports a safety performance of the railway that society is willing to pay for. Originality/value Significant improvements of the maintenance programme are achieved through adjustment of inspection intervals and tasks. The results also support the development of indicators, monitoring, and continuous improvement.

Diagnostics of Track Infrastructure as Part of the Digitisation of Russian Railways

2020 ◽  
Vol 64 (188) ◽  
pp. 149-160
Author(s):  
Janusz Poliński
Keyword(s):  
Diagnostic Tools ◽  
Gradual Transition ◽  
Technical Diagnostics ◽  
Strategic Development ◽  
Railway Infrastructure ◽  
Monitoring And Forecasting ◽  
Infrastructure Maintenance ◽  
Result Analysis ◽  
Railway Maintenance ◽  
Condition Diagnosis

Technical diagnostics is an integral part of the railway maintenance process. Through timely maintenance, in addition to ensuring the safety, functional and technical reliability of the infrastructure, maintenance costs are reduced and downtime losses, due to failures or premature repair requests, are eliminated or reduced. The track infrastructure diagnostic tools have evolved. This is related to, among others, the miniaturisation of instruments, reading accuracy during motion, as well as upgraded measurement automation and result analysis. Currently, data obtained from multifunctional diagnostic tools is the basis for the developed Russian railway infrastructure maintenance and operation digital model. The strategic development of mobile diagnostic labs is the gradual transition to solutions with advanced digital analysis, supported by artificial intelligence, monitoring and forecasting. The article presents the development of mobile labs for the railroad infrastructure condition diagnosis up to the current solutions, in which measurements take place without human intervention and the obtained information is transmitted in real time to the analysis and decision centres. Keywords: rail transport, measuring wagons, digitisation of railways, Russian railways

scholarly journals Risk Perception, Accounting, and Resilience in Public Sector Organizations: A Case Study Analysis

2020 ◽  
Vol 14 (1) ◽  
pp. 4
Author(s):  
Mouhcine Tallaki ◽  
Enrico Bracci
Keyword(s):  
Risk Perception ◽  
Public Sector ◽  
Budget Cuts ◽  
Case Study Analysis ◽  
Public Sector Organization ◽  
Building Resilience ◽  
Public Sector Organizations ◽  
The Face ◽  
Infrastructure Maintenance

There are various factors that can affect an organization’s ability to overcome a crisis and the uncertainties that arise thereafter. Little is known about the process of organizational resilience and the factors that can help or prevent it. In this paper, we analyzed how public sector organizations build resilience/traits of risks awareness, and in doing that, we derived some elements that could affect the process of resilience. In particular, drawing on the conceptual framework proposed by Mallak we analyzed an in-depth case study in a public sector organization (PSO) identifying some contextual dimensions implicated in the process of building resilience. In our analysis, we identified two main elements that affect resilience: Risk perception and the use of accounting. Results shown how risk perception is perceived as a trigger, while accounting is considered as an enforcer in the process of building resilience capacity. The results also show the way accounting is implicated in the management of austerity programs and supporting the creation of a resilient public sector organization. In our case, the risk has become an opportunity for change. In the face of these budget cuts, management began refocusing the company’s mission from infrastructure maintenance to providing services with a market-based logic.

scholarly journals Structural mitigation measures for flood reduction in urban area: A case study of Ciliwung watershed

2020 ◽  
Vol 200 ◽  
pp. 01004
Author(s):  
Rizki Maulana Fadillah ◽  
Hafizh Tsaqib ◽  
Aryanti Karlina Nurendyastuti ◽  
Miftahul Jannah ◽  
Rian Mantasa Salve Prastica
Keyword(s):  
River System ◽  
Mitigation Measures ◽  
Ideal Condition ◽  
Water Infrastructure ◽  
Embankment Dam ◽  
The Earth ◽  
Earth Embankment ◽  
Infrastructure Maintenance ◽  
The Ideal

Flooding is an obstacle for water infrastructure which installed in a river system in Ciliwung, West Java, Indonesia. The climate change triggers unpredictable rainfall which occurs in the watershed, therefore the vulnerability of river and other infrastructures are alarming. The rehabilitation and maintenance strategies are needed to make water infrastructures in the river system obtain lower damage. The research aims to simulate the 2-D HEC-RAS modelling of river system and stability. The result produces the water level of the river even in 1000-year discharge flood. Also, the research proposes the earth embankment dam for flood reduction in the watershed. The dam is designed according to the ideal condition. The simulation of HEC-RAS shows that the river experiences flooding in a certain condition. Besides, the research concludes that designed dam could overcome the flooding problem and suitable strategy for water infrastructure maintenance towards flooding impacts. Further investigation towards soil data for designed dam should be further analyzed to obtain better and comprehensive understanding.

scholarly journals Real-time flood inundation forecasting and mapping for key railway infrastructure: a UK case study

2016 ◽  
Vol 7 ◽  
pp. 18020 ◽  
Author(s):  
Alexandra T. Murphy ◽  
Ben Gouldby ◽  
Steven J. Cole ◽  
Robert J. Moore ◽  
Helen Kendall
Keyword(s):  
Real Time ◽  
Flood Inundation ◽  
Railway Infrastructure

MEASUREMENTS AND ANALYSIS OF ELECTROMAGNETIC INTERFERENCE IN A RAILWAY SIGNAL BOX — A CASE STUDY

2011 ◽  
Vol 18 (03) ◽  
pp. 285-303 ◽  
Author(s):  
STEFAN NISKA ◽  
HÅKAN SCHUNNESSON ◽  
UDAY KUMAR
Keyword(s):  
Electromagnetic Interference ◽  
Real System ◽  
Railway Systems ◽  
New Information ◽  
Railway Infrastructure ◽  
Railway Signal ◽  
Railway Signalling ◽  
And Control

In general railway infrastructure operates in a complex and non homogeneous environment where low power electronics has to function in the similar environment as large voltages and currents from the trains. The environment close to the railway tracks is heavily polluted by electromagnetic (EM) noise from the railway systems itself. The reliability of the railway signalling-, communication-, and control system depends on the degree of isolation from EM noise. It is important to observe the real system and its characteristics in real situation. The complexity of the infrastructure is not easy to simulate or calculate, and therefore measurements were performed on real system in operation. A large number of measurements were made on site at signalling systems and installations of Banverket (the Swedish Rail Administration). By studying and analyzing these measurements, the extent of EMI (Electromagnetic interferences) -related faults can be estimated. In situ measurements must be performed on systems that have obvious problems show increasingly fast and high transients in a DC signalling subsystem. The statistics also show an increased activity of transients during a period before a certain circuit in this system gets out of order. The presented results clearly show how the electromagnets interference effects he signalling system in a signalling box. The measurements in this case study have provided new information on a railway subsystem and have revealed frequencies that are difficult to explain at this moment.

scholarly journals Research to justify the perspective use of individual coordinate systems for contiguous objects modelling with the case study of Moscow Saints Petersburg railway

2021 ◽  
Vol 310 ◽  
pp. 06003
Author(s):  
Aleksei Portnov
Keyword(s):  
Railway Track ◽  
Building Information Modelling ◽  
Information Modelling ◽  
Spatial Objects ◽  
Digital Twins ◽  
Railway Infrastructure ◽  
Mercator Projection ◽  
Building Information ◽  
The Given

The science of cartography should provide a historical mission, that is navigation, and also meet modern agendas including significantly expanding opportunities for BIM technologies, integrating functions of GIS and CAD systems. In this regard, cartography should be considered a fundamental basis for modern trends while creating digital twins of spatial objects. The practical part of the provided experiments included data collecting aimed at Moscow Saints Petersburg railway infrastructure, the calculation of optimal parameters of the oblique Mercator projection in the Hotine version for the given object, and the construction of a 3D railway track model. This research investigated the principles of unique cartographic projections, strictly focused on the certain functioning objects. The research can helps many users and designers of digital twins of spatial objects pay their attention to the applied cartography specifics concerning these issues and also take into account the recommendations while creating Building Information Modelling (BIM) and Infrastructure Information Modelling (IIM) as well.

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