EN 45545-2:2023 is part of the EN 45545 series and specifies fire performance requirements for materials and components used in railway vehicles. It focuses on fire reaction properties (e.g., ignitability, flame spread), smoke emission, and toxicity release, serving as a critical standard for ensuring fire safety in rail transport.
Standard Name
· EN 45545-2:: Railway Applications – Fire Protection of Railway Vehicles – Part 2: Requirements for Fire Behavior of Materials and Components
Material Categories (R1–R28):
Materials are categorized into 28 classes based on their end-use applications. Example categories include:
· R1/R2/R3/R11/R12/R17: Surface materials
· R4/R27: Lamp covers, light diffusers
· R5: Air-conditioning filter materials
· R6: Passenger seat cushions and backrests
· R7: Vehicle exterior surfaces and external ducts
· R8/R10/R28: Roofing and flooring materials (exterior)
· R9/R21: Mattresses, headrests, cushions
· R13: Brake components, sleeves, heat shields
· R14: Lubricants, flame-retardant fluids
· R15/R16: Internal cables
· R18: Complete passenger seats
· R19: Staff seats
· R20: Bedding materials
· R22/R23: Seals, electrical/electronic components, hoses
· R24: Small electrical components
· R24/R25/R26: PCB circuit boards
· R26: Switches, contactors, terminals
Hazard Levels (HL1–HL3):
Vehicles are classified into three fire-risk levels based on operational environments and evacuation difficulty:
· HL1: Vehicles operating in open-air or easily evacuable environments (e.g., R1).
· HL2: Vehicles in partially enclosed environments with moderate evacuation challenges (e.g., R2).
· HL3: Vehicles in high-risk environments (e.g., underground tunnels with limited evacuation options).
Related Standards
NFPA 130: Standard for fixed guideway transitand passenger rail systems
BS 6853: Code of practice for fire precautions in the design and construction of passenger carrying trains
DIN 5510-2: Preventive fire protection inrailway vehicles Part 2: Fire behaviour and fire side effects of materials andparts, classification, requirement and test methods
NF F 16-101: Railway Rolling Stock Fire Behavior Choice of Material
UIC 564-2: Regulations relating to fireprotection and firefighting measures in passenger carrying railway vehicles orassimilated vehicles used on international services
TB/T 3237: Flame retardant technical specification of decorating materials for multiple unit train
TB/T 3138: Technical specification of flame retardant materials for railway locomotive and vehicle
出自JJ2025
