Hajar Trabelssi

• Conducted safety studies for the Sensor Kit in compliance with CENELEC EN 50126/50128/50129 railway standards, ensuring compliance with safety requirements.

• Performed risk analysis (SSHA, SHA, PHA) and reduced critical failures.

• Developed and validated the Safety Case, approved by stakeholders within the given deadlines.

• Managed traceability of requirements and mitigation measures through the Hazard Log.

• Interdisciplinary collaboration (technical teams, suppliers, certification bodies) to ensure compliance and optimize RAMS performance.

• Strict adherence to project milestones, ensuring timely delivery of analyses in a dynamic and deadline-driven environment.

• RAMS study of critical systems for the Grand Paris Express multi-service network (Lines 15, 16, 17).

• In-depth analysis of the reliability, availability, and maintainability (RAM) of telecommunication, intrusion detection, and video surveillance equipment.

• Modeled and optimized system performance using the GRIF tool, reducing the risks of operational unavailability.

• Contributed to technical decisions to ensure compliance with regulatory and contractual requirements.

• Assessed the safety of hydrogen dual-mode trains, in compliance with railway RAMS standards and authorities' requirements.

• Performed functional analysis and technical documentation.

• Conducted Fault Tree Analysis (FTA) and FMEA to identify and correct system weaknesses.

• Optimized System Requirements Specifications (ERS), ensuring better reliability and safety of new onboard technologies.