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Products >> BS 4790: Method for ***ermination of the Effect of
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Standard Name:
BS 4790£ºMethod for ***ermination of the effects of a small source of ignition on textile floor coverings (hot metal nut method)
Scope of application:
This British Standard describes a method for the ***ermination of the effects of a samll source of ignition on textile floor coverings using a hot metal nut.It is applicable to all types of textile floor coverings whether loose-laid or fully adhered and used with or without an underlay.
Sample Requirements:
From each sample,cut at lease three test specimens each measuring 300mm¡Á300mm,including any backing or underlay that dorms part of the final installation,following the procedure described in BS 4664.
Test process:
?Test within 2 minutes of removing the specimen in the standard temperature environment of the test textile or in the atmosphere.
?Heat the nut to a temperature of 900¡À20℃in the muffle furnace.
?Using the crucible tongs place the heated nut onto the specimen within 3s of its removal from the furnace.
?Open the sliding panel and remove the nut from the specimen after it has been in contact with the specimen for 30¡À2s,and then immediately close the sliding panel once more.
Other relevant standards:
NFPA 701: Standard for Test Methods for Flame Propagation of Fabrics and Films
16 CFR 1630: Standard Test for Burning Surfaces of Carpets and Mats
16 CFR 1631: Standard Test for Flammability of Carpet and Cushion Surfaces
ISO 12952-1: Textiles - Bedding Burning Assessment - Part 1: Ignition Source: Smoldering cigarettes
ISO 12952-2: Textiles ¨C Items for the assessment of the flammability of bedding ¨C Part 2: Ignition source: Simulated matches |
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