1、BRITISH STANDARD BS6307:1982 ISO6925:1982 Method for Determination of the effects of a small source of ignition on textile floor coverings (methenamine tablet test) ISO title: Textile floor coverings Burning behaviour Tablet test at ambient temperature UDC 677.07:645.13:677.014.27:536.468BS6307:1982
2、 This British Standard, having been prepared under the directionof the Fibres, Yarns andFabrics Standards Committee, was published underthe authority of the BoardofBSI and comes into effecton 29 October1982 BSI07-1999 The following BSI references relate to the work on this standard: Committee refere
3、nceFBM/16 Draft for comment81/35094DC ISBN 0 580 13001 0 Cooperating organizations The Fibres Yarns and Fabrics Standards Committee, under whose direction this British Standard was prepared, consists of representatives from the following: Association of Jute Spinners and Manufacturers* British Nonwo
4、ven Manufacturers Association British Railways Board British Textile Employers Association* Central Council of the Irish Linen Industry Consumer Standards Advisory Committee of BSI Department of Industry (Chemicals and Textiles)* Institute of Purchasing and Supply International Wool Secretariat* Kni
5、tting Industries Federation Ltd.* Man-made Fibres Producers Committee* Manchester Chamber of Commerce and Industry Ministry of Defence* Narrow Fabrics Federation Textile Institute* Warp Knitters Association Ltd. The organizations marked with an asterisk in the above list, together with the following
6、, were directly represented on the Technical Committee entrusted with the preparation of this British Standard: British Carpet Manufacturers Association British Floor Covering Manufacturers Association British Resin Manufacturers Association City of Bradford Conditioning House Confederation of Briti
7、sh Wool Textiles Limited Department of Industry (Laboratory of the Government Chemist) Greater Manchester Council Fire Service Department of the Environment (PSA) Department of the Environment Building Research Establishment (Fire Research Station) Greater London Council Malaysian Rubber Producers R
8、esearch Association Department of Trade Consumer Safety Unit Fibre Bonded Carpet Manufacturers Association Home Office Soap and Detergent Industry Association Society of Dyers and Colourists Society of Motor Manufacturers and Traders Limited Textile Research Council Amendments issued since publicati
9、on Amd. No. Date of issue CommentsBS6307:1982 BSI 07-1999 i Contents Page Cooperating organizations Inside front cover National foreword ii 1 Scope and field of application 1 2 References 1 3 Principle 1 4 Apparatus and materials 1 5 Test specimens 1 6 Procedure 2 7 Expression of results 2 8 Test re
10、port 2 Publications referred to Inside back coverBS6307:1982 ii BSI 07-1999 National foreword This British Standard has been prepared under the direction of the Fibres, Yarns and Fabrics Standards Committee. It is identical with ISO6925:1982 “Textile floor coverings Burning behaviour Tablet test at
11、ambient temperature”, published by the International Organization for Standardization (ISO). Attention is drawn to BS4790 “Determination of the effects of a small source of ignition on textile floor coverings (hot metal nut method)” which also provides a small ignition source flammability test for t
12、extile floor coverings. The two methods, given in this British Standard and BS4790, measure essentially different properties. The flaming ignition source of the methenamine tablet is important in the assessment of upper surface characteristics, whilst the glowing ignition source of the metal nut has
13、 properties which allow it to sink through any surface pile to the substrate. Particular attention is drawn to5.4 concerning the use of specimens either bone dry or conditioned at65% relative humidity. It is not intended at present to prepare other British Standard specifications requiring the use o
14、f this test (i.e.BS6307), but users of this standard should consider carefully which method of conditioning should be utilized. Terminology and conventions. The text of the international standard has been approved as suitable for publication as a British Standard without deviation. Some terminology
15、and certain conventions are not identical with those used in British Standards; attention is especially drawn to the following: The comma has been used as a decimal marker. In British Standards it is current practice to use a full point on the baseline as the decimal marker. Wherever the words “Inte
16、rnational Standard” appear, referring to this standard, they should be read as “British Standard”. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard d
17、oes not of itself confer immunity from legal obligations. Cross-references International standard Corresponding British Standard ISO139:1973 BS1051:1981 Glossary of terms relating to the conditioning, testing and mass determination of textiles (Technically equivalent a ) ISO1957:1973 BS4664:1971 Met
18、hods of sampling and cutting specimens for physical tests on textile floor coverings (Technically equivalent) ISO2859:1974 BS6000:1972 Guide to the use of BS6001. Sampling procedures and tables for inspection by attributes (Technically equivalent) BS6001:1972 Sampling procedures and tables for inspe
19、ction by attributes (Technically equivalent) a The British Standard glossary contains all the relevant information which, in the international standard, is written in terms of requirements. Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, pages1 and2, an
20、 inside back cover and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover.BS6307:1982 BSI 07-1999 1 1 Scope and field of application This International Standard specifies
21、a method for the assessment of the burning behaviour, often superficial, of textile floor coverings in a horizontal position when exposed to a small source of ignition under controlled laboratory conditions. The method specified in this International Standard is applicable to all types of textile fl
22、oor coverings whatever their construction or their fibre composition. The method may also be applicable to unfinished material. In this case, the result does not indicate the behaviour of the material in the condition in which it is used. The results obtained on specimens in a horizontal position, a
23、s specified in this International Standard, do not apply to the behaviour of the textile floor covering when used in another position, particularly in a vertical position. The present method should be used solely to assess the properties of materials or systems in response to heat and flame under co
24、ntrolled laboratory conditions and should not be used for the evaluation or regulation of the hazard of textile floor coverings under actual fire conditions. The method has been used extensively in the trade for acceptance testing and is considered satisfactory as a test for acceptance of merchandis
25、e, provided that an appropriate sampling plan such as one selected from ISO2859 is used. 2 References ISO139, Textiles Standard atmospheres for conditioning and testing. ISO1957, Machine-made textile floor coverings Sampling and cutting specimens for physical tests. ISO 2859, Sampling procedures and
26、 tables for inspection by attributes. 3 Principle Exposure of a specimen in a horizontal position to the action of a small ignition source (methenamine tablet) under specified conditions and measurement of the resulting damaged length. 4 Apparatus and materials 4.1 Test box, with inside dimensions o
27、f300mm 300mm 300mm and made from hard, fire-resistant insulation board with similar thermal properties to asbestos cement board, not less than6mm thick. The chamber is open at the top and has a flat removable base made of the same material as above. The joints shall be air tight. NOTEAny other test
28、chamber giving identical results may be used. 4.2 Square metal plate, 230mm 230 mm, 6,5 0,5mm thick, with a 205mm diameter hole cut in the centre of the plate. 4.3 Desiccator(s), for storing the methenamine tablets (see4.9) and the bone dry specimens (see5.4.6). It in recommended that self-indicatin
29、g silica gel is used as desiccant. 4.4 Circulating air oven, ventilated, forced draught and thermostatically controlled at105 2 C throughout the enclosure. 4.5 Glove, disposable, of polyethylene, polypropylene or rubber. 4.6 Rule, graduated in millimetres. 4.7 Vacuum cleaner, of which all surfaces i
30、n contact with the specimen are flat and smooth. 4.8 Laboratory fume hood, of about2m 3capacity, capable of being closed and having its draught turned off during the test. The front or one of the sides of the hood shall be glass in order to permit observation of the specimen during the test. 4.9 Met
31、henamine tablet. 1) Tablets of hexamethylenetetramine, flat, having a mass of1505mg and a diameter of6mm. NOTEStorage of the tablets in a desiccator reduces the tendency to crack upon ignition. 4.10 Timing device, optional. 5 Test specimens 5.1 Sampling and cutting Sampling and cutting of specimens
32、shall be carried out in accordance with ISO1957. 5.2 Dimensions and number Cut at least eight specimens, each2303mm square, from each sample. NOTEFor acceptance testing, the number of specimens shall be determined by an appropriate sampling plan selected from ISO2859. 1) Methenamine tablets are avai
33、lable commercially. Details may be obtained from the ISO Central Secretariat or from the Secretariat of ISO/TC38.BS6307:1982 2 BSI 07-1999 5.3 Underlays The use of an underlay is not specified. However, subject to agreement between the interested parties, this method can be used to assess the effect
34、 of an underlay in combination with a textile floor covering. 5.4 Conditioning of test specimens Clean each specimen with the vacuum cleaner(4.7) until the pile is free from fluff or loose ends of yarn, fibres, etc. Condition test specimens in a manner that will permit free air circulation and so th
35、at they are not resting upon one another, in one of the following ways, or as agreed between the interested parties: a) in the standard atmosphere of20 2 C and65 2% relative humidity in accordance with ISO139, or b) by drying the specimens in the oven(4.4) at105 2 C for2h removing the specimens from
36、 the oven with a gloved hand (see4.5) and placing the specimens immediately in the desiccator(4.3) for at least1h, until they reach ambient temperature. NOTEThe use of bone dry specimens may be more stringent than the use of specimens conditioned at65% relative humidity. However, it may be that use
37、of specimens conditioned at65% relative humidity is more realistic for some countries. Performance requirements should be set accordingly. 6 Procedure 6.1 Carry out the test in an atmosphere having a temperature between10 and30C and a relative humidity between20 and65%. 6.2 Place the test chamber(4.
38、1) in the laboratory fume hood(4.8) with the ventilation turned off. 6.3 Remove a specimen from the conditioning atmosphere or desiccator (according to the method of conditioning chosen in5.4) with a gloved hand and, if there is a pile, brush it in a direction opposite to the lay to bring the pile t
39、o an upright position. 6.4 Place the specimen flat on the floor of the test box with the use surface uppermost, ensuring the specimen is horizontal. Place the metal plate(4.2) on top of the specimen, and line up the outside edges of the plate with those of the specimen. 6.5 Place a methenamine table
40、t(4.9) flat and in the centre of the specimen, and ignite the tablet with a lighted match which shall only lightly touch the upper face of the tablet. If used, start the timing device(4.10). Do not touch the specimen with the lighted match. If more than2min elapses between removal of the specimen fr
41、om the conditioning atmosphere or the desiccator and ignition of the tablet, repeat the procedure specified in6.1 to6.5 with a new conditioned specimen. Close the fume cupboard. If the tablet cracks upon ignition, consider the test result void. 6.6 Allow the ignition flame or any propagated flame to
42、 burn until extinction or until the flame or glowing reaches the edge of the hole in the metal plate. Terminate the test when either of the above conditions is reached. Stop the timing device, if used. Start the ventilation in the fume hood to eliminate any volatile products of combustion. 6.7 After
43、 each specimen has been tested, lift the removable base from the test chamber and free it of any residue which would prevent the next specimen from lying in a horizontal plane. Allow sufficient time between each test for the test chamber to cool to ambient temperature 5 C. 6.8 Repeat the procedure s
44、pecified in6.3 to6.7 on each specimen. 6.9 On each specimen measure, to the nearest millimetre, the maximum distance between the centre of the specimen and the edge of the damaged zone using the rule(4.6). 6.10 If required, measure the time in seconds from the ignition of the tablet to the moment wh
45、en the flame or glowing reaches the edge of the hole in the metal plate, using the timing device(4.10). 7 Expression of results The results of the test shall be the value obtained for each specimen (see6.9). 8 Test report The test report shall include the following particulars: a) a statement that t
46、he test was conducted in accordance with this International Standard; b) a statement of the sampling plan used; c) whether a separate underlay was incorporated in the test (see5.3); d) the conditioning atmosphere used for the test specimens (see5.4); e) for each specimen, the damaged length as deter
47、mined in6.9; f) if required, the flame spread time measured according to6.10; g) any operating detail not stated in this International Standard or any incident likely to have had an effect on the test results.BS6307:1982 BSI 07-1999 Publications referred to See national foreword.BS6307:1982 ISO6925:
48、1982 BSI 389 Chiswick High Road London W4 4AL BSIBritishStandardsInstitution BSI is the independent national body responsible for preparing BritishStandards. It presents the UK view on standards in Europe and at the international level. It is incorporated by Royal Charter. Revisions BritishStandards
49、 are updated by amendment or revision. Users of BritishStandards should make sure that they possess the latest amendments or editions. It is the constant aim of BSI to improve the quality of our products and services. We would be grateful if anyone finding an inaccuracy or ambiguity while using this BritishStandard would inform the Secretary of the technical committee responsible, the identity of which can be found on the inside front cover. Tel:02089969000. Fax:02089967400. BSI offers members an individual updating service called PLUS which
