British Standard: BS6853 – Flame retardant test of rail vehicle materials, fire test
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British Standard: BS6853 – Flame retardant test of rail vehicle materials, fire test
The following is an interpretation of the British standard BS6853 for flame retardant and fire protection testing of rail vehicle materials :
BS6853 British Flame Retardant Fire Test – Standard Name:
BS6853: Code of practice for fire precautions in the design and construction of passenger carrying trains / BS6853: General code for fire prevention in the design and construction of passenger carrying trains
BS6853 British Flame Retardant Fire Test – Standard Overview:
The purpose of the BS6853 British Standard is to ensure the safety of passengers on and around vehicles carrying passenger trains. BS6853 British Standard explains to railway vehicle manufacturers the authoritative part of safety regulations regarding fire performance. This standard strengthens the responsibilities of railway vehicle designers and manufacturers and encourages them to use safer materials that release less toxic substances in flames. .
Compliance with this standard means that the following conditions shall be provided:
Achieve acceptable control of fire hazards
Achieve acceptable control of the total level of heat, smoke and toxic gases when all major material surfaces are exposed to fire sources
All materials or items required to be used as fireproof boards, as well as materials and items required to function when exposed to fire sources, should achieve acceptable fireproof performance
BS6853 British flame retardant and fire protection test - standard scope of application:
BS6853 British Standard provides recommendations for the design and construction of railway vehicles including or forming part of passenger trains.
Recommendations for this standard include:
Material reaction to fire (combustion, smoke generation, smoke toxicity)
Use of fireproof board
General aspects of fire safety facility design
BS6853 Flame Retardant and Fire Protection Test - Analysis of Standard Requirements:
project | Product Usage | Test content | Test method standards |
BS6853 Table 1 | Horizontal upward surface in the car | surface extension of flame | BS 476-7 |
Critical radiant heat flow during fire extinguishing | ISO 9239-1 |
Smoke Density Test (Floor Test) | BS6853 Annex D |
Smoke toxicity test | BS6853 Annex B |
BS6853 Table 2 | Interior vertical surfaces | Flame propagation testing of products | BS 476-6 |
surface extension of flame | BS 476-7 |
Smoke Density Test (Wall Panel Test) | BS6853 Annex D |
Smoke toxicity test | BS6853 Annex B |
BS6853 table 3 | Horizontal downward surface in the car | Flame propagation testing of products | BS 476-6 |
surface extension of flame | BS 476-7 |
Smoke Density Test (Wall Panel Test) | BS6853 Annex D |
Smoke toxicity test | BS6853 Annex B |
BS6853 Table 4 | Horizontal upward surface outside the vehicle | surface extension of flame | BS 476-7 |
Critical radiant heat flow during fire extinguishing | ISO 9239-1 |
Smoke Density Test (Floor Test) | BS6853 Annex D |
Smoke toxicity test | BS6853 Annex B |
BS6853 table 5 | Exterior vertical surface | surface extension of flame | BS 476-7 |
Smoke Density Test (Wall Panel Test) | BS6853 Annex D |
Smoke toxicity test | BS6853 Annex B |
BS6853 Table 6 | Horizontal downward surface outside the vehicle | surface extension of flame | BS 476-7 |
Smoke Density Test (Wall Panel Test) | BS6853 Annex D |
Smoke toxicity test | BS6853 Annex B |
BS6853 Table 7 | Materials for small areas in the car with a volume of 100g to 500g | Temperature Index Test | BS ISO 4589-3 |
oxygen index test | BS ISO 4589-2 |
Smoke density test (small area test) | BS6853 Annex D |
Smoke toxicity test | BS6853 Annex B |
BS6853 Table 8 | Materials for small areas outside the car with a volume of 400g to 2000g | Temperature Index Test | BS ISO 4589-3 |
oxygen index test | BS ISO 4589-2 |
Smoke density test (small area test) | BS6853 Annex D |
Smoke toxicity test | BS6853 Annex B |
BS6853 Table 9 | seat upholstery | Flame propagation testing of products | BS 476-6 |
surface extension of flame | BS 476-7 |
Smoke density test (seat test) | BS6853 Annex D |
Smoke toxicity test | BS6853 Annex B |
BS6853 Table 10 | Seat surface (back and bottom) | Flame propagation testing of products | BS 476-6 |
surface extension of flame | BS 476-7 |
Smoke Density Test (Wall Panels) | BS6853 Annex D |
Smoke toxicity test | BS6853 Annex B |
BS6853 Table 11 | Textiles (separately placed vertically on fire and laid flat) | Textile small flame combustion test | BS 5438 |
Smoke density test (small area test) | BS6853 Annex D |
Smoke toxicity test | BS6853 Annex B |
BS6853 Table 12 | Mattress | surface extension of flame | BS 476-7 |
Smoke Density Test (Floor Test) | BS6853 Annex D |
Smoke toxicity test | BS6853 Annex B |
BS6853 Table 13 | In-car cables | Cable combustion test | BS 4066-3 |
Smoke Density Test (Wall Panel Test) | BS6853 Annex D |
Smoke toxicity test | BS6853 Annex B |
BS6853 Table 14 | Outside car cables | Cable combustion test | BS 4066-3 |
Smoke Density Test (Wall Panel Test) | BS6853 Annex D |
Smoke toxicity test | BS6853 Annex B |
BS6853 Flame Retardant and Fire Test – Specific Material Application Scope
-Rubber products (seals, sealing rings) -Melamine foam (insulation material) - Textiles (curtains, visors, seat coverings) -Floor materials (glue for flooring, paint, etc.) -Plastic products (shades, wall panels, battery covers, etc.) -Wire and Cable | -Sound insulation felt -Sponge (seat cushion) -Aluminum honeycomb panel (floor) -Fire retardant coating -Fireproof glue -train seats |
BS6853 Flame retardant and fire protection test - related reference standards
BS 476476-6 : Fire tests on building materials and structures - Part 6: Test methods for product flame propagation
BS 476-7 : Fire tests on building materials and structures - Part 7: Test methods for determining the level of flame surface extension of products
BS 476-15 : Fire tests on building materials and structures - Part 15: Test method for heat release of products
BS 476-20 : Fire tests on building materials and structures - Part 20: Methods of determining the fire resistance of building elements
BS 476-22 : Fire tests on building materials and structures - Part 22: Methods for determining fire protection of non-loaded elements of buildings
BS 476-4 : Fire tests on building materials and structures - Part 4: Material non-
flammability test BS 4066-3 : Testing of wires and cables under fire conditions - Part 3: Testing of bundles of wires and cables
BS 5438 : Textile flammability test
BS 6387 : Characteristics required for cables to ensure circuit integrity in case of fire
BS EN 3 : Portable fire extinguishers
BS ISO 5659-2 : Plastics – Smoke generation – Part 2: Precise determination of optical density
BS ISO 9239-1 : Fire tests - Surface extension of flames in flooring systems - Part 1: Flame extension using radiant sources
NF X 70-100 : Flame test-pyrolysis and combustion gas analysis-tube furnace method
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