Grand Paris Express

Such scale introduces elevated fire risk. Deep tunnelling works, temporary compounds, evolving layouts and confined spaces require fire protection that is both technically robust and operationally adaptable. For contractors and safety managers, maintaining regulatory compliance while protecting personnel across dispersed worksites is critical

Metro infrastructure construction presents unique risk factors. Underground works restrict access and visibility, increasing the importance of early detection and clear evacuation signalling. Site conditions evolve continuously as excavation progresses and installations advance, meaning fire alarm systems must move with the build rather than remain fixed.

The presence of multiple contractors adds further complexity. Fire safety systems must provide consistent performance and compliance across packages, ensuring aligned emergency procedures and demonstrable due diligence.

In France, construction fire systems must also meet insurer expectations and national certification standards. Compliance with APSAD rules are essential to satisfy both regulatory and insurance requirements.

To support contractors across the Grand Paris Express, Ramtech deployed WES3, its third-generation wireless fire detection and alarm system, purpose-built for high-risk and temporary construction environments. WES3 delivers fully wireless fire detection and alarm capability without the need for hardwired infrastructure. This allows rapid installation within tunnels, shafts, site compounds and welfare facilities without interfering with critical construction activities. As site layouts change, devices can be relocated and reconfigured to maintain continuous protection.

The system deployed on the project is APSAD compliant and certified to EN54-25, providing assurance that the solution meets French fire safety standards and aligns with European requirements. Remote monitoring capability through REACT Cloud further enhances oversight, enabling real-time visibility of alarm events and system status.
By combining certified compliance with flexible deployment, WES3 ensures fire protection remains aligned with the evolving nature of major infrastructure works.

The introduction of WES3 strengthened fire safety management across active construction zones. Immediate site-wide alarm notification supports rapid evacuation from underground areas, where response time is critical. The wireless architecture reduces installation complexity and avoids disruption to construction sequencing.

Because the system is relocatable and reusable, contractors benefit from long-term value beyond a single phase of works. Fire protection evolves alongside the build, maintaining consistent safety standards without repeated infrastructure investment.

The WES3 Emergency Alert System had not only met the project’s stringent safety requirements but exceeded them. Impressed by the system’s capabilities, the safety coordinators had envisioned taking it to future projects. With a legacy of professionalism and forward-thinking, the choice of Ramtech’s WES3 system had reflected the commitment to safety and innovation in the face of challenging construction environments.