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EN ISO 5659:2026

Plastics - Smoke generation - Determination of optical density by a single-chamber test (ISO 5659:2026)

Edition date: 2026-02-04
In Force
Available languages: English, French
Summary: This document specifies a method of measuring smoke production from the exposed surface of specimens of materials or composites. It is applicable to specimens that have an essentially flat surface and do not exceed 25 mm in thickness when placed in a horizontal orientation and subjected to specified levels of thermal irradiance in a closed cabinet with or without the application of a pilot flame. This method of test is applicable to all plastics. It is intended that the values of optical density determined by this test be taken as specific to the specimen or assembly material in the form and thickness tested and are not to be considered inherent, fundamental properties. The test is intended primarily for use in research and development and fire safety engineering in buildings, trains, ships, etc. and not as a basis for ratings for building codes or other purposes. No basis is provided for predicting the density of smoke that can be generated by the materials upon exposure to heat and flame under other (actual) exposure conditions. This test procedure excludes the effect of irritants on the eye. NOTE            This test procedure addresses the loss of visibility due to smoke density, which generally is not related to irritancy potency (see Annex E). It is emphasized that smoke production from a material varies according to the irradiance level to which the specimen is exposed. The results yielded from the method specified in this document are based on exposure to the specific irradiance levels of 25 kW/m2 and 50 kW/m2.

Le présent document spécifie une méthode pour le mesurage de la production de fumée provenant de la surface exposée d’éprouvettes constituées par des matériaux ou des composites. Elle est applicable à des éprouvettes qui ont une surface essentiellement plane et dont l'épaisseur est inférieure à 25 mm, lorsqu'elles sont orientées horizontalement et soumises à des niveaux spécifiés d'éclairement énergétique thermique dans une enceinte fermée, avec ou sans utilisation de flamme pilote. La présente méthode d'essai est applicable à tous les plastiques. Les valeurs de densité optique déterminées par le présent essai sont propres au matériau de l'éprouvette ou de l'assemblage soumis à essai, sous la forme et avec l'épaisseur sélectionnées pour l'essai. Ces valeurs ne doivent pas être considérées comme révélatrices de propriétés de base, inhérentes au produit. L'essai est principalement destiné à être utilisé en recherche et développement et en ingénierie de sécurité incendie dans les bâtiments, les trains, les navires, etc., et non en tant que base d'appréciation pour des codes de construction ou pour d'autres fins. Aucun élément fondamental n'est fourni pour prévoir la densité de la fumée susceptible d'être produite par les matériaux exposés à la chaleur et à une flamme dans d'autres conditions (réelles) d'exposition. Le présent mode opératoire d'essai ne traite pas de l'effet des irritants sur les yeux. NOTE            Le présent mode opératoire d'essai concerne la perte de visibilité due à la densité de la fumée qui n'est généralement pas liée au pouvoir irritant (voir Annexe E). Il est précisé que la production de fumée d'un matériau varie en fonction du niveau d'éclairement énergétique auquel l'éprouvette est soumise. Les résultats fournis par la méthode spécifiée dans le présent document sont fondés sur une exposition à des niveaux d'éclairement énergétique spécifiques de 25 kW/m2 et de 50 kW/m2.

Dieses Dokument legt ein Verfahren zur Messung der Rauchentwicklung auf der freiliegenden Oberfläche von Probekörpern aus Werkstoffen oder Verbundstoffen fest. Das Verfahren ist anwendbar für Probekörper mit einer im Wesentlichen ebenen Oberfläche und einer Dicke von höchstens 25 mm, die horizontal angeordnet und in einer geschlossenen Prüfkammer mit oder ohne Anwendung einer Zündflamme einer Wärmebestrahlung mit einer bestimmten Intensität ausgesetzt werden. Dieses Prüfverfahren ist anwendbar für alle Kunststoffe. Es wird davon ausgegangen, dass die Werte der nach dieser Prüfung bestimmten optischen Dichte für den Werkstoff des Probekörpers oder vorgefertigten Teils in der untersuchten Form und Dicke als spezifisch angesehen werden und nicht als werkstoffspezifische, grundlegende Eigenschaften. Die Prüfung ist in erster Linie für die Anwendung in der Forschung und Entwicklung sowie im Brandschutzingenieurwesen von Gebäuden, Zügen, Schiffen usw. und nicht als Bewertungsgrundlage für Bauvorschriften oder sonstige Anwendungen bestimmt. Es wird keine Vorhersage für die Dichte des Rauchs, den Werkstoffe bei einer Beanspruchung durch Wärme und Flammen unter anderen (tatsächlichen) Expositionsbedingungen erzeugen können, gegeben. Dieses Prüfverfahren schließt den Einfluss von Reizstoffen auf die Augen aus. ANMERKUNG Dieses Prüfverfahren berücksichtigt die Einschränkung der Sichtverhältnisse durch die Rauchdichte, die im Allgemeinen nicht in Beziehung zur Reizwirkung steht (siehe Anhang E). Es wird darauf hingewiesen, dass die von einem Werkstoff ausgehende Rauchentwicklung von der Bestrahlungsstärke abhängt, die auf den Probekörper einwirkt. Die mit dem in diesem Dokument festgelegten Verfahren erhaltenen Ergebnisse beruhen auf einer Beanspruchung mit den spezifischen Bestrahlungsstärken von 25 kW/m2 und 50 kW/m2.
ICS: 83.080.01-Plastics in general, 13.220.40-Ignitability and burning behaviour of materials and products
CTN: CEN/TC 249 - 6230

Otras Relaciones

Acuerdo de Viena ISO 5659:2026

Reemplazo Normas

Reemplaza a EN ISO 5659-2:2017

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