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Case Study: Underground MRT Stations in South East Asia | IEC Mats
05 October 2026
Summary
During the specification phase of a major underground Mass Rapid Transit (MRT) project in South East Asia, a global lead consultant identified toxic smoke from combustible components as a primary fire hazard in confined underground spaces. To enforce maximum fire safety, the consultant specified zero-halogen, low-smoke materials for electrical equipment.
Raychem RPG’s Safety Product Management Team developed a custom safety mat compound that met strict REACH, RoHS 2, and zero-halogen criteria, as well as the rigorous IEC 61111 dielectric safety standards, securing a partnership to supply underground metro stations across the network.
The Challenge
Confined underground metro environments pose unique life-safety challenges during fire emergencies. Because smoke and airborne toxins cannot easily disperse in enclosed spaces, toxic gas evolution from standard synthetic materials represents a leading cause of fire-related fatalities.
- Strict Material Mandates: Project consultants required that all materials deployed within underground station platforms and electrical rooms be completely free of halogens and heavy smoke-producing agents.
- Electrical Safety Compliance: Safety mats placed in front of high-voltage distribution panels needed to maintain high electrical insulation performance under IEC 61111 standards.
- Environmental & Chemical Regulations: The solution had to meet stringent global environmental criteria, including REACH and RoHS 2 compliance, without degrading physical durability or dielectric strength.
The Solution
Raychem RPG’s Safety Product Management Team developed a custom-formulated elastomer compound tailored to meet both fire safety and high-voltage dielectric requirements:
- Zero-Halogen & Low-Smoke Formulation: Engineered to eliminate halogenated flame retardants, ensuring that no corrosive or lethal toxic gases are released in the event of a high-temperature fire.
- IEC 61111 Dielectric Certification: Formulated to withstand specified high-voltage electrical breakdown tests, providing reliable operator insulation in front of live electrical switchgear and control panels.
- Global Chemical Compliance: Fully compliant with REACH and RoHS 2 hazardous substance regulations, ensuring environmental safety throughout the product lifecycle.
Key Results & Impact
- Enhanced Underground Life Safety: Reduced fire hazard risks in confined MRT station environments by eliminating toxic gas evolution from panel safety mats.
- Full Regulatory & Standard Compliance: Delivered a certified product that satisfies both IEC electrical insulation benchmarks and international chemical safety directives.
- Project Specifications Integration: Secured a direct collaboration with global MRT consultants, embedding Raychem RPG safety mats into underground metro station specifications across South East Asia.