Système automatique d’exploitation des trains, ligne 1 (SAET L1)
Analysis of the safety critical software of the PARIS CBTC line 1

The SAET L1 (CBTC) project makes part of the global project of paris metro Line 1 automation, same as line […]

Système automatique d’exploitation des trains, ligne 1 (SAET L1)
Assistance in the analysis and the validation of the Octys critical software

OURAGAN, now Octys  is a train control and command system (TCC) developed for the RATP (Paris subway), the Parisian transport […]

Système d’arrêt automatique du tramway de Rouen
Automatic stopping system project for the Rouen tramway

CLEARSY is assisting the Rouen conglomeration (project manager) in the installation and commissioning of an automatic stoppage system for the […]

B METHOD for the construction of a MICROKERNEL

The B METHOD for the construction of MICROKERNEL – Based Systems : Sarah Hoffmann, Germain Haugou – STMicroeletronics Sophie Gabriele […]

Car diagnosis

A solution for diagnosing an electronic breakdown in a car DIAGELEC is a Repair Help software for malfunctions in GOLF […]

logo Methode B
Control of coherence between code and specifications

Control of coherence between code and specifications CLEARSY has the role of “external controller” within the context of developing these […]

Simulateur Opérationnel Personnalisé (SRO)
Customised Operational Simulator (SRO)

CLEARSY has provided a customised Operational Simulator intended for Saudi Railways Organisation. This simulator had several specific aspects such as […]

DEPLOY R&D project

Industrial deployment of system engineering methods providing high dependability and productivity.

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The central supervision system developed by CLEARSY allows RATP to concentrate, in a central fire safety station, the supervision (control and command) of the fire safety and fire detection systems of the Parisian metro stations. Informed in real time of the status of all the fire safety equipment by the supervision system, the operating assistance system enables the fire safety and personal assistance service to resolve any doubts by locating, on a 2D map, the premises and equipment in alarm, and then visually checking the existence of an outbreak of fire by means of video on an operator station. If the event is confirmed, the central supervisor then allows the operator to remotely act on the safety devices located in the station (fans, motorized ventilation bay, fire-smoke device, air curtain...). The safety procedures are automated to facilitate and accelerate the operator's work and limit the fire risk. In this architecture, which integrates a SIL2 Supervisor, the fire safety system in the station remains operational, continues to alert, but its operation no longer requires monitoring by a local operator, and is only used in the event of a failure of the central system or the network. The contract for RATP includes the installation and commissioning of the centralized control system and data acquisition interfaces in metro stations. The first commissioning started in September 2019 (21 stations in service in April 2021). This Supervisor, based on the use of off-the-shelf ECUs, is designed to interface with safety and fire detection systems from different vendors, and can, as required by fire safety standards, supervise up to 1024 points per fire detection system. It is sized to drive 700 stations with 5 events/state changes per second per station, which represents a capacity of 3500 state/events changes in one second.



The system is certified at SIL2 level according to the 61508 standard by Bureau Veritas and is approved by the CNPP, the organization responsible for the approval of all systems related to fire detection in France.  


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