Abstract
The management of a diverse asset portfolio is a demanding task for railway asset managers. They must ensure that the network delivers a high level of performance for customers and adheres to safety limits. Reliability, availability, maintainability and safety (RAMS) analysis is regularly used to assess the performance of systems, including railway networks. However, currently there are a wide range of different approaches to RAMS analysis in the railway industry. This research seeks to identify and consolidate any potential extensions to the traditional RAMS approach into a single framework: extended RAMS. The framework comprises ten parameters, RAMS and six additional parameters of particular interest to railway asset managers, including capacity and train performance. The framework is intended for use by asset managers to evaluate the attributes and current status of the railway infrastructure and enable comparison between different parts of the network and to evaluate different stakeholder needs.
Highlights
Effective asset management can improve an organisation’s ability to operate safely, meet regulatory obligations and significantly reduce the cost of managing assets over their lives (IAM, 2015)
The extended RAMS (ExRAMS) framework consists of ten parameters: RAMS and six additional parameters related to railways
Each railway asset manager currently has their own implementation of RAMS, which makes comparing between RAMS analyses impossible
Summary
Effective asset management can improve an organisation’s ability to operate safely, meet regulatory obligations and significantly reduce the cost of managing assets over their lives (IAM, 2015). An alternative approach to railway asset management value analysis: framework development Litherland, Calvert, Andrews, Modhara and Kirwan bespoke RAMS analysis. This has lead to inconsistency across the industry and inhibits the sharing of knowledge. The purpose of the ExRAMS framework is to evaluate and combine the various approaches to RAMS that are currently used within the railway industry into a single framework, enabling uniform assessment of the current operation of the infrastructure in a section or route. This paper initially reviews the literature for traditional RAMS analysis, alongside the consideration of existing research into the parameterisation of the operational status of railway networks. For each of the parameters, a definition is provided as well as a method of calculation
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