ISO INTERNATIONAL STANDARD 8191-2 First edition 1988-10-15 INTERNATIONAL ORGANIZATION FOR STANDARDIZATION ORGANISATION INTERNATIONALE DE NORMALISATION MEXKAYHAPOAHAA OPrAHW3ALMA NO CTAHAAPTM3ALMM Furniture - Assessment of ignitability of upholstered furniture - Part 2: Ignition source: match-flame equivalent Ameublement -- Evaluation de la facilité d'allumage des meubles rembourrés- Partie 2: Source d'allumage: flamme simulant une allumette Referencenumber ISO 8191-2: 1988 (E) Copyright International Organization for Standardization tted without license from IHS Not for Resale ISO 8191-2 : 1988 (E) Foreword Iso (the International Organization for Standardization) is a worldwide federation of Standards is normally carried out through iso technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, govern- mental and non-governmental, in liaison with ISO, also take part in the work. IsO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. Draft International Standards adopted by the technical committees are circulated to the member bodies for approval before their acceptance as International Standards by the ISO Council. They are approved in accordance with ISo procedures requiring at least 75 % approval by the member bodies voting. International Standard ISO 8191-2 was prepared by Technical Committee ISO/TC 136 Furniture. Users should note that all International Standards undergo revision from time to time and that any reference made herein to any other International Standard implies its latest edition, unless otherwise stated. @ International Organization for Standardization, 1988 Printed in Switzerland Copyright International Organization for Standardization Not for Resale itted without license from IHS INTERNATIONAL STANDARD ISO 8191-2 : 1988 (E) Furniture - Assessment of ignitability of upholstered furniture - Part 2: Ignition source: match-flame equivalent O Introduction Criteria of ignition 4 This part of isO 8191 is one of a series of standards concerned 4.1 Progressive smouldering ignition with the ignitability of upholstered furniture using various For the purposes of this part of ISO 8191, all the following types ignition sources. of behaviour are considered to be progressive smouldering The ignition source used in this part of ISO 8191 is a gas flame ignitions: which is equivalent to a match flame. a) any test assembly that displays escalating combustion behaviour so that it is unsafe to continue the test and active The three annexes contained in this part of ISO 8191 do not extinction is necessary; form integral parts of the Standard. b) any test assembly that smoulders until it is essentially consumed within the test duration; Scope and field of application > c) any test assembly that smoulders to the extremities of the specimen, viz upper or lower margins, either side or to This part of IsO 8191 lays down a test method to assess the its full thickness, within the duration of the test; ignitability of materiai combinations, such as covers and ilings used in upholstered seating, when subjected to a small flame as d) any test assembly that, on final examination, shows an ignition source. evidence of charring other than discoloration, for more than 100 mm in any direction apart from upwards from the loca- The tests measure only the ignitability of a combination of tion closest to the position of the source. materials used in upholstered seating and not the ignitability of a particular finished item of furniture incorporating these Disregard any smouldering which ceases within 120 s after materials. They give an indication of, but cannot guarantee, the removal of the burner tube. ignition behaviour of the finished item of furniture. NOTE -- In practice it has been found that there is usually a clear distincti