IEC 60695-9-1-2013 Fire hazard testing - Part 9-1 Surface spread of flame - General guidance《着火危险试验.第9-1部分 火焰的表面扩展.通用指南》.pdf

1、 IEC 60695-9-1 Edition 3.0 2013-04 INTERNATIONAL STANDARD NORME INTERNATIONALE Fire hazard testing Part 9-1: Surface spread of flame General guidance Essais relatifs aux risques du feu Partie 9-1: Propagation des flammes en surface Lignes directrices gnrales IEC 60695-9-1:2013 BASIC SAFETY PUBLICATI

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16、ion 3.0 2013-04 INTERNATIONAL STANDARD NORME INTERNATIONALE Fire hazard testing Part 9-1: Surface spread of flame General guidance Essais relatifs aux risques du feu Partie 9-1: Propagation des flammes en surface Lignes directrices gnrales INTERNATIONAL ELECTROTECHNICAL COMMISSION COMMISSION ELECTRO

17、TECHNIQUE INTERNATIONALE P ICS 13.220.40; 29.020 PRICE CODE CODE PRIX ISBN 978-2-83220-753-6 BASIC SAFETY PUBLICATION PUBLICATION FONDAMENTALE DE SCURIT Registered trademark of the International Electrotechnical Commission Marque dpose de la Commission Electrotechnique Internationale Warning! Make s

18、ure that you obtained this publication from an authorized distributor. Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agr. 2 60695-9-1 IEC:2013 CONTENTS FOREWORD . 3 INTRODUCTION . 5 1 Scope . 6 2 Normative references 6 3 Terms and definitions . 6 4 Princ

19、iples of flame spread . 11 4.1 Liquids 11 4.2 Solids 11 5 Consideration for the selection of test methods . 12 5.1 Fire scenario . 12 5.2 Ignition sources . 12 5.3 Types of test specimen 12 5.4 Test procedure and apparatus . 13 5.5 Measurement techniques . 13 5.5.1 Direct measurement . 13 5.5.2 Indi

20、rect measurement 13 6 Use and interpretation of results . 13 Bibliography 15 60695-9-1 IEC:2013 3 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ FIRE HAZARD TESTING Part 9-1: Surface spread of flame General guidance FOREWORD 1) The International Electrotechnical Commission (IEC) is a worldwide organiza

21、tion for standardization comprising all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international co-operation on all questions concerning standardization in the electrical and electronic fields. To this end and in addition to other activities, IEC

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27、orresponding national or regional publication shall be clearly indicated in the latter. 5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible

28、for any services carried out by independent certification bodies. 6) All users should ensure that they have the latest edition of this publication. 7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and members of its technical committees

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30、) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is indispensable for the correct application of this publication. 9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of patent rig

31、hts. IEC shall not be held responsible for identifying any or all such patent rights. International Standard IEC 60695-9-1 has been prepared by IEC technical committee 89: Fire hazard testing. The text of this standard is based on the following documents: FDIS Report on voting 89/1159/FDIS 89/1164/R

32、VD Full information on the voting for the approval of this standard can be found in the report on voting indicated in the above table. This publication has been drafted in accordance with the ISO/IEC Directives, Part 2. This third edition cancels and replaces the second edition of IEC 60695-9-1 publ

33、ished in 2005, and constitutes a technical revision. 4 60695-9-1 IEC:2013 This edition includes the following significant technical changes with respect to the previous edition: a) an expanded scope; b) updated references; c) updated terms and definitions. It has the status of a basic safety publica

34、tion in accordance with IEC Guide 104 and ISO/IEC Guide 51. This international standard is to be used in conjunction with IEC 60695-9-2. A list of all the parts in the 60695 series, under the general title Fire hazard testing, can be found on the IEC web site. IEC 60695-9 consists of the following p

35、arts: Part 9-1:Surface spread of flame General guidance Part 9-2: Surface spread of flame Summary of test methods The committee has decided that the contents of this publication will remain unchanged until the stability date indicated on the IEC web site under “http:/webstore.iec.ch“ in the data rel

36、ated to the specific publication. At this date, the publication will be reconfirmed, withdrawn, replaced by a revised edition, or amended. 60695-9-1 IEC:2013 5 INTRODUCTION Fires are responsible for creating hazards to life and property as a result of the generation of heat (thermal hazard), and als

37、o toxic effluent, corrosive effluent and smoke (non-thermal hazard). Fire hazard increases with the burning area leading in some cases to flashover and a fully developed fire. This is a typical fire scenario in buildings. The surface spread of flame beyond the area of ignition occurs as a result of

38、the creation of a pyrolysis front on the surface of the material, ahead of the flame front, arising from the heating by the flame and external heat sources. The pyrolysis front is the boundary between pyrolysed material and unpyrolysed material on the surface of the material. Combustible vapours are

39、 generated within the region of pyrolysed material, which mix with air and ignite, creating the flame front. The surface spread of flame rate is the distance travelled by the flame front divided by the time required to travel that distance. The surface spread of flame rate depends on the heat suppli

40、ed externally and/or by the flame of the burning material ahead of the burning zone and on the ease of ignition. The ease of ignition is a function of the minimum ignition temperature, thickness, density, specific heat, and thermal conductivity of the material. The heat supplied by the flame depends

41、 on the heat release rate, specimen orientation, air flow rate and air flow direction relative to the surface spread of flame direction. In general, materials show one of the following types of surface spread of flame behaviour: a) non-propagation: there is no flame propagation beyond the area of ig

42、nition; b) decelerating propagation: flame propagation stops before reaching the end of the surface of the material; and c) propagation: flame propagates beyond the area of ignition and eventually affects the entire surface of the material. Properties of the materials that are used to describe the s

43、urface spread of flame behaviour are associated with surface preheating and pyrolysis, generation of vapours, mixing of the vapours with air, ignition, combustion of the mixture and generation of heat and combustion products. Flame retardants and surface treatments are used to modify the surface spr

44、ead of flame behaviour. Factors that need to be considered for the assessment of the surface spread of flame behaviour of materials are: 1) the fire scenario (including such parameters as surface orientation, ventilation and the nature of the ignition source); 2) measurement techniques (see 5.5); an

45、d 3) the use and interpretation of results obtained (see 6). 6 60695-9-1 IEC:2013 FIRE HAZARD TESTING Part 9-1: Surface spread of flame General guidance 1 Scope This part of IEC 60695provides guidance for the assessment of surface spread of flame for electrotechnical products and the materials from

46、which they are formed. It provides: an explanation of the principles of flame spread for both liquids and solids, guidance for the selection of test methods, guidance on the use and interpretation of test results, and informative references This basic safety publication is intended for use by techni

47、cal committees in the preparation of standards in accordance with the principles laid down in IEC Guide 104 and ISO/IEC Guide 51. One of the responsibilities of a technical committee is, wherever applicable, to make use of basic safety publications in the preparation of its publications. The require

48、ments, test methods or test conditions of this basic safety publication will not apply unless specifically referred to or included in the relevant publications. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for

49、its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. IEC 60695-4, Fire hazard testing Part 4: Terminology concerning fire tests for electrotechnical products IEC Guide 104, The preparation of safety publications and the use of basic safety publications and group safety publications ISO/IEC Guide 51,