Defining States in Reliability and Safety Modelling

Restel, Franciszek J.

doi:10.1007/978-3-319-19216-1_39

Cited by 8 publications

(1 citation statement)

References 12 publications

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“…This was achieved by characterising connectivity reliability, defined as the probability that a network node remains connected, taking into account the interactions between the reliability of infrastructure systems and rolling stock subsystems in relation to the intensity of use. Franciszek [32] presented an approach to model the reliability of railway transport systems, concluding that for models with critical infrastructures, the unreliability of the system is contained in random streams of unwanted events. In these models, interference in the transportation process is taken into account only in the form of delays.…”

Section: Modelling Railway Infrastructure Reliabilitymentioning

confidence: 99%

A Modelling Framework for Railway Infrastructure Reliability Analysis

Fourie

Zhuwaki

2017

SAJIE

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The maintenance and management of railway infrastructure plays a central role in ensuring the reliability and availability of rail transport. In a highly competitive transport market, the rail industry is required to employ new and innovative maintenance strategies that will position rail transport as an affordable and reliable transportation alternative. This can be realised through implementing maintenance strategies that prioritise efficient resource allocation. Application of reliability-based techniques to make informed decisions in maintenance management, with an overall aim of reducing operational expenditure while maintaining safety and efficiency, has been increasing. This paper presents a framework for the application of a reliability-based technique to evaluate the reliability of railway infrastructure systems. OPSOMMINGDie onderhoud en bestuur van spoorweginfrastruktuur speel 'n sentrale rol om die betroubaarheid en beskikbaarheid van spoorverkeer te verseker. In 'n hoogs-mededingende vervoer bedryf, word dit van die spoorindustrie verwag om nuwe en innoverende onderhoudstrategieë toe te pas. Dit sal dié industrie in die posisie stel om 'n bekostigbare en betroubare vervoerkeuse te wees. Hierdie posisie kan egter slegs bereik word indien onderhoudstrategieë toegepas word wat voorkeur gee aan die doeltreffende toewysing van hulpbronne. Daar is 'n toename in die toepassing van tegnieke gegrond op betroubaarheid vir die neem van ingeligte besluite in onderhoudbestuur. Die doel van die tegnieke is om bedryfsuitgawes te verminder terwyl veiligheid en doeltreffendheid behoue bly. In hierdie artikel word 'n raamwerk voorgestel vir die toepassing van tegnieke om betroubaarheid van spoorweginfrastruktuur te evalueer. INTRODUCTIONThe management of railway infrastructure assets involves a range of activities such as building, inspection, maintenance, enhancement, and renewal aimed at optimising the performance, risks, and costs of the infrastructure. This is a highly complex decision-making environment that requires various trade-offs. Furthermore, the relationship between the timing and choice of activities for multiple assets needs to be taken into account to achieve the required performance levels. Significant efforts have been made to develop decision support tools based on cost, risk, and reliability to assist with decision-making in highly complex asset management environments. used reliability-based techniques to develop a parametric model to predict correctly the failure rate probability of point-and-point machines in railway signalling subsystems. Additionally, similar reliability analyses using fault tree analysis have been applied to railway infrastructure systems to quantify the reliability performance of railway electrical subsystems [5]- [7].

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Section: Modelling Railway Infrastructure Reliabilitymentioning

confidence: 99%