EN 45545 2 Concerning the burning behaviour of hose materials, the EN 45545-2 contains specific requirements for: • Oxygen index to EN ISO 4589-2 • Smoke density to EN ISO 5659-2 • Smoke toxicity to NF X70-100-1 & 2 For classification, the standard divides materials intended for installation into different areas (inside/outside) and three hazard levels (HL1, HL2, HL3 = highest level): • Installed inside the vehicles: R22 • Installed outside the vehicles: R23 Areas Classification Hazard levels HL1 HL2 HL3 R22 (IN16; E2; E6A; E7A; M2) T01 EN ISO 4589-2: OI Oxygen content % min. 28 28 32 T10.03 EN ISO 5659-2: 25 kWm-2 DS max. dimensionless max. 600 300 150 T12 NF X 70-100-1 and -2 600 °C CITNLP dimensionless max. 1,2 0,9 0,75 R23 (EX12; E2; E5; E6B; E7B; M3) T01 EN ISO 4589-2: OI Oxygen content % min. 28 28 32 T10.03 EN ISO 5659-2: 25 kWm-2 DS max. dimensionless max. – 600 300 T12 NF X 70-100-1 and -2 600 °C CITNLP dimensionless max. – 1,8 1,5 EN 45545-4 contains normative references to the EN 50553, which is furthermore important for hose assemblies installed in defined vehicle applications. EN 50553 applies to “Railway applications – requirements for running capability in case of fire on board of rolling stock”. • Hose assemblies which are installed within hydraulic/pneumatic circuits essential for the running capability of the vehicle have to pass a flame test according ISO15540 (min. 800 °C for at least 15 minutes). EN 45545-2 defines a classification system that specifies the requirements for the fire behaviour of materials and products used in trains. This European standard raises the level of requirements compared to the previous national standards, which have now been withdrawn. EN 45545-2 classifies all materials used on board into different groups which have to fulfil specific “requirement sets” including several test criteria. Everything you need to know
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