NF C20-902-1

Fire hazard testing. Test methods. Determination of smoke opacity without air-change. Part one : methodology and test devices.

La présente norme décrit la méthodologie d'un essai ainsi que le dispositif à utiliser pour le conduire, mais ne définit pas une classification de comportement des matériaux vis-à-vis de l'opacité des fumées émises. Elle est applicable aux matériaux non métalliques solides utilisés en électrotechnique. Elle a pour but de déterminer, d'une façon conventionnelle et dans des conditions expérimentales définies, la densité optique des fumées produites par des matériaux exposés à un rayonnement thermique.

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