1. EN 45545-2
Railway applications – Fire protection of railway vehicles – Part 2: Requirement for fire behavior of materials and components. EN 45545-2 Railway applications – Fire protection of railway vehicles – Part 2: Requirement for fire behavior of materials and components.
—Part 2: Fire protection requirements for materials and components.
EU standard EN45545-2:2020 has replaced the EN45545-2:2013+A1:2015 standard
2. Overview of the EN 45545-2 standard.
Regarding the fire test standards for railway vehicle materials, the test standards and methods vary from country to country. The European Union has launched a program called the Firestarr Project to research and establish a set of flammable test standards suitable for railway vehicle materials. It lays the foundation for testing of properties, flame spread rate, heat release, smoke release and toxicity.
According to the final use of the product and the degree of risk in case of fire, it will be divided into 28 different categories R1-R28. According to different vehicle types and operating environments, there are three levels of fire risk: HL1-HL3, with HL3 having the highest fire risk.
3. The EN 45545-2 standard includes the following rail vehicles
The EN 45545-2 standard specifies the fire protection and combustion test performance, smoke toxicity and other properties of the following vehicles (subway trains, high-speed rails, maglev trains, locomotives, light rail trams, trolley buses, and long-distance buses).
4.EN 45545-2 Main test standards
EN ISO 5658-2: Flame expansion in vertical structures of building products
EN ISO 5660-1: Test method for product heat release rate
EN ISO 5659-2: Product smoke density
EN 17084: Toxicity test
EN ISO 9239 -1: Critical thermal radiation test for floor materials
EN ISO 4589: Oxygen index test
NF X 70-100: Toxicity test
EN 50266-2-4: Vertical burning test of multiple bundles of wires and cables (cable diameter ≥ 12mm)
EN 50305.9.1.1: Fire performance test of thin-walled cables for railways (6mm < cable diameter < 12mm)
EN 50305.9.1.2: Railway Fire performance test with thin-walled cables (cable diameter ≤ 6mm)
EN 50305 9.2: ITC toxicity index test for wires and cables
EN 61034-2: Smoke concentration test for wires and cables
EN 60332-1-2: Single vertical flame combustion of wires and cables
5. EN 45545-2 mainly focuses on the following aspects:
heat release,
flame extension level,
flammability
toxicity test
smoke density
6. EN 45545-2 test items and corresponding test standards
| project | Product Usage | Test content | Test method standards |
| EN 45545-2R1 | Wall panels, ceilings and other materials | flame extension test | ISO 5658-2 |
| Combustion heat release test | ISO 5660-1 | ||
| Smoke density test | ISO 5659-2 | ||
| Smoke toxicity test | EN 17084 & ISO 5659-2 | ||
| EN 45545-2R5 | Air conditioning filter material | small flame burning | ISO 11925-2 |
| combustion heat release | ISO 5660-1 | ||
| Smoke density test | ISO 5659-2 | ||
| Smoke toxicity test | ISO 5659-2 | ||
| EN 45545-2R1 | Floor and ground covering materials | combustion heat release | ISO 5660-1 |
| Critical radiant heat flow during fire extinguishing | ISO 9239-1 | ||
| Smoke density test | ISO 5659-2 | ||
| Smoke toxicity test | ISO 5659-2 | ||
| EN 45545-2R15, R16 | Wire and Cable | Single cable burning test | EN 6 0332-1-2 |
| Bundle cable combustion test | EN 50305 & EN 60332-3-24 | ||
| Smoke density test | EN 61034-2 | ||
| Smoke toxicity test | EN 50305 9.2 | ||
| EN 45545-2R22, R23 | Small range materialsElectronic and electrical products | Oxygen index determination | EN ISO 4589-2 |
| Smoke density test | EN ISO 5659-2 | ||
| Smoke toxicity test | NF X70-100-1 & 2 |
7. EN 45545 related standards
EN45545 Fire protection of railway vehicles Fire protection of railway vehicles.
EN45545-1 Part 1: General General provisions for fire protection of rail vehicles.
EN45545-2 Part 2: Requirements for fire behavior of materials and components Requirements for combustion performance of materials and components.
EN45545 Part 3: Fire resistance requirement for fire barriers and partitions Fire resistance requirements for fire barriers and partitions.
EN45545 Part 5: Fire safety requirements for electrical equipment including that of trolley buses, track guided and magnetic levitation vehicles Fire safety requirements for electrical and electronic equipment of trolley buses, track guided and magnetic levitation vehicles.
EN45545 Part 6: Fire control and management system Fire control and management system.
EN45545 Part 7: Fire safety requirements for flammable liquid and flammable gas installations Fire safety requirements for flammable liquid and flammable gas installations.
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