The architecture of the IAMS has been defined in line with the ISO55000 (ISO, 2014) and the UIC Guidelines for asset management in rail sector (UIC, 2016). In particular, the classification between SAMP (Strategic Asset Management Plan), AMP (Asset Management Plan) and IAMP (Implementation of the Asset Management Plan) levels, identified by the ISO55000, is taken into account.
The Intelligent Asset Management System was based on five main layers :
• IAMS Data Collection: Identification and collection of all the information (Static and Dynamic) that have to be extracted for the proper monitoring of the involved assets/systems. This includes the understanding of different data formats of logs coming from such systems, which should be received through ad hoc or native interfaces.
• IAMS Data Platform: Creation of a data platform to collect, clean, store and manage the data coming from the field. This platform is highly scalable, potentially geographically distributed, flexible and able to work with structured and unstructured data to be used as a base for further data analysis.
• IAMS Data Analysis: Design and implementation, for each identified system/asset to be managed by the IAMS, of methodologies and analytic solutions for the assets status assessment and future status prediction (predictive maintenance).
• IAMS Planning and Decision Support Systems (DSS): Design and implementation of optimization techniques aimed at supporting infrastructure managers and operators in making decisions on the prioritizations of interventions, guaranteeing the achievement of the desired targets of rail service availability, reliability and efficiency. Management activities are planned taking into account the predicted status of the asset and the criticality of the asset, that is, the impact that its failure would have on the entire system.
• IAMS HMI: Creation of a customizable HMI able to support the asset management, visualizing concise information for each system/asset and related IAMS functionalities and the results coming from analytics.
The innovative asset management system had the following key features:
• Integration layer that allows communication between different data formats.
• Diagnostics and anomaly detection techniques that enable automatic anomaly detection and provide alarms.
• Tools and models for predictive analytics that are able to extract information using the heterogeneous data from the field from many sources.
• RAMS and integration/risk modules that allow to assess the impact of an asset failure on the entire system performance, in terms of service disruptions, evaluating asset criticalities and integrating the outputs of the data analytics in the decision support.
• Planning functionalities, based on optimization techniques that aim at scheduling efficiently Asset Management interventions considering constraints, such as crew availability, and goals such as cost-efficiency, system reliability and availability, etc..
The decision support system contributes to the prevention of costly failures and supports operational Asset Management and maintenance decision making at strategic, tactical and operational levels (SAMP, AMP, IAMP)