BS 6853 Fire test to cable for Railway Components
BS 6853 Fire test to cable for Railway Components
BS 6853 Fire test to cable - Standard
BS 6853: Code of practice for fire precautions in the design and construction of passenger carrying trains - Table13 / Table14
BS 6853 Fire test to cable - Brief
The standard has been extensively revised to assist railway vehicle builders in interpreting guidance from the Safety Regulatory Authority on fire performance. It is envisaged therefore that this standard will have a wider use than the previous edition and reflects the concern of the Fire Standards Committee by upgrading the responsibilities of railway vehicle designers, builders and manufacturers, encouraging them to produce safer materials which release less toxic effluent in a fire, for future safety.
BS 6853 Fire test to cable - Requirement
Table 13 Interior cables
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Test Method
|
Parameter
|
Table 13 Interior cables
|
||
|
Ia
|
Ib
|
II
|
||
|
BS4066-3
Flammability
|
Burn length
（Max）
|
2.5m
|
2.5m
|
2.5m
|
|
Annex D
Smoke
|
Ao(ON)
Ao(OFF)
|
Ao(ON)
Ao(OFF)
|
Ia x 1.6
Ia x 1.6
|
Ia x 3.6
Ia x 3.6
|
|
Annex B
Toxicity
|
R(Max)
|
1.0
|
1.6
|
3.6
|
Table 14 Exterior Cables
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Test Method
|
Parameter
|
Table 14 Exterior Cables
|
||
|
Ia
|
Ib
|
II
|
||
|
BS4066-3
Flammability
|
Burn length
（Max）
|
2.5m
|
2.5m
|
2.5m
|
|
Annex D
Smoke
|
Ao(ON)
Ao(OFF)
|
Ao(ON)
Ao(OFF)
|
Ia x 1.6
Ia x 1.6
|
NC
NC
|
|
Annex B
Toxicity
|
R(Max)
|
1.7
|
2.7
|
NC
|
BS 6853 Fire test to cable – Reference Standard
- BS 4066-3, Tests on electric cables under fire conditions — Part 3: Tests on bunched wires or cables.
- BS ISO 5659-2 Plastics - Smoke generation - Determination of specific optical density
- BS 6387, Specification for performance requirements for cables required to maintain circuit integrity under fire conditions.
- BS 476-6, Fire tests on building materials and structures - Part 6: Method of test for fire propagation for products.
- BS 476-7, Fire tests on building materials and structures - Part 7: Method of test to determine the classification of the surface spread of flame of products.
- BS 4066-3, Tests on electric cables under fire conditions - Part 3: Tests on bunched wires or cables
- BS 5438:1989, Methods of test for flammability of textile fabrics when subjected to a small igniting flame applied to the face or bottom edge of vertically oriented specimens.
- BS 6387, Specification for performance requirements for cables required to maintain circuit integrity under fire conditions.
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