Over Khaled
Ingénieur civil et expert en analyse de risque au sein du ferroviaire, j’interviens de l’idée au safety case pour réduire l’exposition au risque et sécuriser les décisions d’investissement.
Mon terrain: RAMS CENELEC (EN 50126/50129), ETCS niveaux 1/2, interlocking/RBC, robustesse horaire et analyses chiffrées à haute valeur ajoutée.
J’ai conduit 30+ projets d’infrastructure et de signalisation sur un grand réseau européen, en alignant contraintes d’exploitation, normes et réalité du terrain. J’apporte des modèles fiables (hypothèses explicites, Monte-Carlo, scénarios) jusqu’à convergence avec l’observé, puis je projette les résultats sur les variantes futures.
Je livre des dossiers décisionnels lisibles pour management et régulateur: hazard log, matrices de risques, exigences de sécurité, preuves de conformité, et synthèses exécutives.
Méthodes: PHA/FHA, FMEA/FMECA, FTA, Bow-Tie, quantification SPAD, courbes de freinage, matrices de criticité, ISO 31000.
Outils: Excel pour la modélisation et la simulation; diagrammes clairs et traçabilité des hypothèses.
Langues: Français, Anglais.
Modalités: mission courte ou accompagnement au long cours, à distance ou sur site Benelux/UE.
Mon objectif: minimiser votre risque résiduel et accélérer l’obtention du feu vert en fournissant des preuves quantitatives solides et directement exploitables.
Mots-clés
RAMS, CENELEC EN 50126/50129, ETCS, Interlocking, RBC, SPAD, FMEA, FTA, Bow-Tie, Monte-Carlo, Safety case, UIC, Timetabling, Quantification du risque, Python, Excel
Frans
Tweetalig / moedertaal
Arabisch
Tweetalig / moedertaal
Engels
Vloeiend
Nederlands
Beperkte professionele capaciteit
Kan op locatie werken
Bruxelles (tot 50km)
Werkervaring
- INFRABEL,Quantitative Risk AnalystTRANSPORT & LOGISTIEKnovember 2017 - Vandaag (8 jaren en 7 maanden)Bruxelles, België1. Quantitative Risk Modelling (Monte Carlo Simulation):I carry out Monte Carlo simulations to quantify the risk of signal overrun under ETCS and other railway signalling systems.
- Development of mathematical models to simulate ETCS braking curves using probabilistic techniques such as Monte Carlo simulation.
- Assessment of signal overrun probability under different speed assumptions to quantify the safety benefit of ETCS.
- Analysis and reporting of quantitative results to senior management.
Tools: Crystal Ball (Excel add-on for Monte Carlo Simulation).2. Safety Analyses (PHI / PHA):I perform Preliminary Hazard Identification (PHI) and Preliminary Hazard Analyses (PHA) related to regulatory changes (STI OPE as defined by the European Union Agency for Railways – ERA) and technical evolutions in signalling and train-protection systems.- Identification and evaluation of new hazards resulting from regulatory or technical changes.
- Application of relevant safety assessment standards (EN 50126 for RAMS lifecycle management and EN 50129 for safety-related signalling systems) when modifications concern signalling or control-command systems.
- Documentation, traceability, and reporting for safety case justification and stakeholder review.
Tools: PHA Pro (Sphera). - INFRABEL,Senior Railway Traffic Simulation EngineerTRANSPORT & LOGISTIEKjanuari 2012 - november 2016 (4 jaren en 10 maanden)Bruxelles, BelgiëMy job was to support infrastructure investment decisions through rigorous, objective, and quantitative analysis.Projects: I was responsible for more than 30 infrastructure modification projects (addition or removal of tracks, switches, junctions, etc.) across the Belgian railway network. For each project, I developed reliable infrastructure and traffic models based on operational assumptions. These models were iteratively refined until the simulated results accurately matched real operating conditions. Once validated, they were used to simulate and evaluate future network and traffic configurations.Tasks / Competencies / Expertise:
- Macroscopic and microscopic railway modelling
- Robustness analysis in accordance with UIC standards
- Runtime and maximum load analysis for freight and passenger operations
- Design of optimized and regular timetables considering signalling constraints headway times, runtimes, dwell times, and connections)
- Quantitative impact analysis of infrastructure modifications on timetable performance and capacity
- Preparation of technical and management reports for executive decision-making
- Strong understanding of railway operations, signalling principles, and capacity modelling
- Proven ability to manage complex, multidisciplinary projects and understand customer requirements
Tools:- DEMIURGE (SNCF, France): Macroscopic modelling tool using linear mathematical optimization (C-PLEX algorithm) to design and optimize transport plans based on assumptions regarding train operations and infrastructure.
- LUKS (via-con.de, Germany): Microscopic modelling of existing infrastructure, including all signals and routes, enabling detailed timetable design and conflict analysis.
- Runtime / Routing Applications (Internal Development):Designed and developed in VBA (Excel/Access interface). Widely used by Infrabel engineers for rapid preliminary infrastructure assessments.
- INFRABEL,Project Manager AssistantTRANSPORT & LOGISTIEKnovember 2007 - december 2011 (4 jaren en 1 maand)Bruxelles, BelgiëProjects: I was involved into the Regional Express Network. The purpose is to improve mobility inside Brussels capital by increasing the railway capacities and services from the centre of Brussels to about 30 km outside the capital. To reach this goal many railroad have to extend their capacities by passing from two to four ways and by implementing new stations. The project comprises works of civil engineering for the superstructure, bridges, tunnels and stations, catenaries works for electrical supply and signalization works (ETCS level 2). Today, the total cost of the project is over 1billons euros.Tasks: The global project was dived into many sub-projects including essentially work of civil engineering. As sponsor of a part of them, I was directly in contact with the Project Manager of the sub-contractor company who executes the projects. My principal task was to make a planning, cost and quality monitoring of our different sub-projects.*Civil works: Monitoring/report, specification control, critical path, PERT Analysis *Budget (average of 20 million € per sub-projects): Monitoring/report, negotiations with sub-contractor, Monte Carlo Simulation. *Building permits: monitoring, negotiations *Administrative: report to high level managementCompetencies:*Project
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