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Qu'est-ce qu'une évaluation indépendante de la sécurité ?


The Independent Safety Assessment mission is generally required by the National Safety Authorities (NSAs) in order to ensure that the necessary safety level has been achieved.

It is within this framework that third-parties are involved with the aim of leading a safety-oriented assessment in accordance with CENELEC standards (EN 50126-1, EN 50126-2, EN 50128 et EN 50129), functional safety standards IEC61508 and IEC61511, Common Safety Methods (CSM) and also (sometimes) national rules and regulations.

The Independent Safety Assessment consists of providing a third-party assessment leading to confidence in sub-systems (rolling-stock, infrastructure, energy and signalling) and also the integration of these subsystems to the global system, the product (balise, sensor…) or the software (braking/traction software…). ISA is required for new products, subsystem, and also systems concerned by significant changes that may affect the safety level.


As Certifer Group, all the entites provide Independant Safety Assessment worldwide for all subsystems:
  • Infrastructure
  • Energy
  • Control-Command and Signalling (Trackside and Onboard)
  • Rolling Stock - Tramways, Metros, Locomotives and Passengers
  • Freight wagons
  • Products, softwares, ...


WHAT IS the role of the ISA ?

Qu'est-ce qu'une évaluation indépendante de la sécurité ?Based on EN50126 safety life-cycle model, the Independent Safety Assessor may intervene throughout the whole V-cycle of the project. Nevertheless, in cases where ISA reports are obtained, cross-acceptance principles are applied to avoid over assessments.

The role of the ISA is to assess that all the risks have been identified, that all the safety requirements have been respected and that all the hazards have been mitigated.

EN50126 Life-cycle phases 


  • Infrastructure and Energy : Electrification Program the conventional network (Denmark), Modernization of Samsun-Kalın line (Turkey), Tanger-Kenitra HSL (Morocco), interlocking systems (Ansaldo)
  • Metro Rolling stock: Dubai (UAE), Glasgow (Scotland), Dublin (Ireland), Lyons metro lines B extension and metro line, Paris line 11, extension of the line A and the rolling stock of the VAL 208 of Toulouse, the VAL208NG of Charles de Gaulle airport the lines 15,16,17 and 18 of the Grand Paris network (France), Santiago (Chile)
  • Light rail train(tramways): Doha Tramway (Qatar), Kaohsiung (Taiwan), Sydney (Australia) and Rio (Brazil), Grand Avignon, Grenoble, Nice, Caen, Bordeaux and Angers (France), Luxembourg Tramway, 
  • Control-Command and Signalling (on-board): On-board safety equipment East European HSL (SNCF)
  • Control-Command and Signalling (track-side): ETCS Level I and II (Ansaldo), 
  • Products: Software Traction braking (Alstom), Odometry, Automatic train supervision, Platform Screen Doors for specific product: (Faiveley, STE Eng.), for global system (Peru L2, Santiago L3 & 6, Riyadh Dubai, Mumbai and Kolkata)
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