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1、BRITISH STANDARD BS ISO 5658-2:2006 Reaction to fire tests Spread of flame Part 2: Lateral spread on building and transport products in vertical configuration ICS 13.220.50 ? Licensed Copy: London South Bank University, London South Bank University, Wed May 16 03:50:51 GMT+00:00 2007, Uncontrolled C
2、opy, (c) BSI BS ISO 5658-2:2006 This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 May 2007 BSI 2007 ISBN 978 0 580 50734 2 National foreword This British Standard was published by BSI. It is the UK implementation of ISO 5658-2:2006. It super
3、sedes BS ISO 5658-2:1996 which is withdrawn. The UK participation in its preparation was entrusted to Technical Committee FSH/21, Reaction to fire tests. A list of organizations represented on this committee can be obtained on request to its secretary. This publication does not purport to include al
4、l the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard cannot confer immunity from legal obligations. Amendments issued since publication Amd. No. DateComments Licensed Copy: London South Bank University, London South Bank Univ
5、ersity, Wed May 16 03:50:51 GMT+00:00 2007, Uncontrolled Copy, (c) BSI Reference number ISO 5658-2:2006(E) INTERNATIONAL STANDARD ISO 5658-2 Second edition 2006-09-15 Reaction to fire tests Spread of flame Part 2: Lateral spread on building and transport products in vertical configuration Essais de
6、raction au feu Propagation du feu Partie 2: Propagation latrale sur les produits de btiment et de transport en position verticale BS ISO 5658-2:2006 Licensed Copy: London South Bank University, London South Bank University, Wed May 16 03:50:51 GMT+00:00 2007, Uncontrolled Copy, (c) BSI ii Licensed C
7、opy: London South Bank University, London South Bank University, Wed May 16 03:50:51 GMT+00:00 2007, Uncontrolled Copy, (c) BSI iii Contents Page Foreword. v Introduction. vi 1 Scope 1 2 Normative references1 3 Definitions 1 4 Principle3 5 Suitability of a product for testing.4 5.1 Surface character
8、istics .4 5.2 Thermally unstable products5 6 Test specimens5 6.1 Exposed surface5 6.2 Number and size of specimens5 6.3 Construction of specimens 7 6.4 Conditioning.7 6.5 Preparation.7 7 Test apparatus .9 7.1 General9 7.2 The radiant panel support framework .10 7.3 Specimen support framework11 7.4 S
9、pecimen holder11 7.5 Pilot flame burner 12 8 Test environment.15 9 Additional equipment and instrumentation 15 9.1 Heat-flux meter.15 9.2 Total radiation pyrometer .16 9.3 Recorder .16 9.4 Timing devices.16 9.5 Dummy specimen16 9.6 Calibration board.16 9.7 Backing boards and spacers17 10 Setting-up
10、and calibration procedure17 10.1 Setting-up.17 10.2 Verification .20 10.3 Adjustment of the pilot flame.20 11 Test procedure.20 12 Expression of fire performance of a product22 13 Test report22 Annex A (normative) Safety precautions24 Annex B (informative) Specimen construction 25 Annex C (informati
11、ve) Calibration of the working heat-flux meter.26 Annex D (informative) Guidelines for reporting and follow-up of results of fire test procedures27 Annex E (informative) Variability of test results 28 BS ISO 5658-2:2006 Licensed Copy: London South Bank University, London South Bank University, Wed M
12、ay 16 03:50:51 GMT+00:00 2007, Uncontrolled Copy, (c) BSI iv Annex F (normative) Test method for flame spread of plastic piping 31 Bibliography .33 BS ISO 5658-2:2006 Licensed Copy: London South Bank University, London South Bank University, Wed May 16 03:50:51 GMT+00:00 2007, Uncontrolled Copy, (c)
13、 BSI v Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for wh
14、ich a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all
15、matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are ci
16、rculated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held respo
17、nsible for identifying any or all such patent rights. ISO 5658-2 was prepared by Technical Committee ISO/TC 92, Fire safety, Subcommittee SC 1, Fire initiation and growth. This second edition of ISO 5658-2 cancels and replaces the first edition (ISO 5658-2:1996), which has been technically revised.
18、ISO 5658 consists of the following parts, under the general title Reaction to fire tests Spread of flame: Part 1: Guidance on flame spread Technical Specification Part 2: Lateral spread on building and transport products in vertical configuration Part 4: Intermediate-scale test of vertical spread of
19、 flame with vertically oriented specimen BS ISO 5658-2:2006 Licensed Copy: London South Bank University, London South Bank University, Wed May 16 03:50:51 GMT+00:00 2007, Uncontrolled Copy, (c) BSI vi Introduction This part of ISO 5658 is based on the method of the International Maritime Organizatio
20、n (IMO) published as IMO Resolution A.653 (16)4, and has been developed as an International Standard in order to allow its wider use. The major differences between ISO 5658-2 and the IMO test are that ISO 5658-2 is limited in scope to testing the spread of flame over vertical specimens and does not
21、include the stack for estimating heat release rate. The second edition of this part of ISO 5658 avoids the use of acetylene for the pilot flame and uses the propane pilot flame in an impinging mode. The current IMO flame spread procedure is still based on ISO 5658-2:1996. ISO/TS 5658-12 describes th
22、e development of standard tests for flame spread and explains the theory of flame spread for various orientations. This part of ISO 5658 provides a simple method by which lateral surface spread of flame on a vertical specimen can be determined for comparative purposes. This method is particularly us
23、eful for research, development and quality control purposes. Fire is a complex phenomenon: its behaviour and its effects depend upon a number of interrelated factors. The behaviour of materials and products depends upon the characteristics of the fire, the method of use of the materials and the envi
24、ronment to which they are exposed. The methodology of “reaction-to-fire” tests is explained in ISO/TR 38141. A test such as is specified in this part of ISO 5658 deals only with a simple representation of a particular aspect of the potential fire situation typified by a radiant-heat source and flame
25、; it cannot alone provide any direct guidance on behaviour or safety in fire. Annexes A and F form integral parts of this part of ISO 5658. Annexes B to E are for information only. A precision statement based on inter-laboratory trials using this test method is given in Annex E. This test procedure
26、does not rely on the use of asbestos-based materials. The attention of all users of the test is drawn to the introductory caution statement. BS ISO 5658-2:2006 Licensed Copy: London South Bank University, London South Bank University, Wed May 16 03:50:51 GMT+00:00 2007, Uncontrolled Copy, (c) BSI 1
27、Reaction to fire tests Spread of flame Part 2: Lateral spread on building and transport products in vertical configuration CAUTION So that suitable precautions can be taken to safeguard health, the attention of all concerned in fire tests is drawn to the possibility that toxic or harmful gases can b
28、e evolved during exposure of test specimens. The advice on safety given in Annex A should also be noted. 1 Scope This part of ISO 5658 specifies a method of test for measuring the lateral spread of flame along the surface of a specimen of a product orientated in the vertical position. It provides da
29、ta suitable for comparing the performance of essentially flat materials, composites or assemblies that are used primarily as the exposed surfaces of walls in buildings and transport vehicles, such as ships and trains. Some profiled products (such as pipes) can also be tested under specified mounting
30、 and fixing conditions. This part of ISO 5658 is applicable to the measurement and description of the properties of materials, products or assemblies in response to radiative heat in the presence of a pilot flame under controlled laboratory conditions. It is not suitable to be used alone to describe
31、 or appraise the fire hazard or fire risk of materials, products or assemblies under actual fire conditions. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references,
32、 the latest edition of the referenced document (including any amendments) applies. ISO 13943:2000, Fire safety Vocabulary 3 Terms and definitions For the purposes of this document, the terms and definitions given in ISO 13943:2000 and the following apply. 3.1 assembly fabrication of materials, produ
33、cts and/or composites EXAMPLE Sandwich panels. NOTE The assembly may include an air gap. 3.2 average heat for sustained burning average of the values of heat for sustained burning, measured at a number of specified positions NOTE The average heat for sustained burning is expressed in megajoules per
34、square metre (MJ/m2). BS ISO 5658-2:2006 Licensed Copy: London South Bank University, London South Bank University, Wed May 16 03:50:51 GMT+00:00 2007, Uncontrolled Copy, (c) BSI 2 3.3 backing board non-combustible board with the same width and length as the test specimen and (12,5 3) mm thick, used
35、 in every test to back the specimen NOTE 1 See 9.7. NOTE 2 A non-combustible board is one that, when tested to ISO 171610, yields a gross calorific potential (PCS) of u 2,0 MJ/kg. 3.4 composite combination of materials that are generally recognized in building construction as discrete entities EXAMP
36、LE Coated or laminated materials. 3.5 critical heat flux at extinguishment CFE incident heat flux at the surface of a specimen at the point along its horizontal centreline where the flame ceases to advance and may subsequently go out NOTE 1 The heat flux value reported is based on interpolations of
37、measurements with a non-combustible calibration board. NOTE 2 The critical heat flux at extinguishment is expressed in kilowatts per square metre (kW/m2). 3.6 exposed surface that surface of the specimen subjected to the heating conditions of the test 3.7 flame front furthest extent of travel of a s
38、ustained flame centrally along the length of the test specimen 3.8 flashing existence of flame on or over the surface of the specimen for periods of less than 1 s 3.9 heat for sustained burning product of the time from the start of exposure of a specimen to the arrival of the flame front at a specif
39、ied position and the incident radiant heat flux corresponding to that position measured on a non-combustible calibration board NOTE 1 The heat for sustained burning is expressed in megajoules per square metre (MJ/m2). NOTE 2 The positions are specified in Table 1. 3.10 irradiance at a point of a sur
40、face quotient of the radiant heat flux incident on an infinitesimal element of surface containing the point, by area of that element 3.11 material single substance or uniformly dispersed mixture EXAMPLES Metal, stone, timber, concrete, mineral fibre and polymers. BS ISO 5658-2:2006 Licensed Copy: Lo
41、ndon South Bank University, London South Bank University, Wed May 16 03:50:51 GMT+00:00 2007, Uncontrolled Copy, (c) BSI 3 3.12 product material, composite or assembly about which information is required 3.13 radiant heat flux power emitted, transferred or received in the form of radiation 3.14 spec
42、imen representative piece of the product that is tested together with any substrate or treatment NOTE The specimen may include an air gap. 3.15 spread of flame propagation of a flame front over the surface of a product under the influence of imposed irradiance 3.16 substrate material that is used, o
43、r is representative of that used, immediately beneath a surface product EXAMPLE Skimmed plasterboard beneath a wall-covering. 3.17 sustained flaming existence of flame on or over the surface of the specimen for periods of more than 4 s 3.18 transitory flaming existence of flame on or over the surfac
44、e of the specimen for periods of between 1 s and 4 s 3.19 lateral spread of flame progression of the flame front in a lateral direction over the specimen length 4 Principle 4.1 The test method consists of exposing conditioned specimens in a well-defined field of radiant heat flux and measuring the t
45、ime of ignition, the lateral spread of flame and its final extinguishment. 4.2 A test specimen is placed in a vertical position adjacent to a gas-fired radiant panel where it is exposed to a defined field of radiant heat flux. A pilot flame is sited close to the hotter end of the specimen to ignite
46、volatile gases issuing from the surface (see Figure 1). 4.3 Following ignition, any flame front that develops is noted and a record is made of the progression of the flame front horizontally along the length of the specimen in terms of the time it takes to travel various distances. 4.4 The results a
47、re expressed in terms of flame spread distance versus time, flame front velocity versus heat flux, the critical heat flux at extinguishment and the average heat for sustained burning. BS ISO 5658-2:2006 Licensed Copy: London South Bank University, London South Bank University, Wed May 16 03:50:51 GM
48、T+00:00 2007, Uncontrolled Copy, (c) BSI 4 Key 1 vertical radiant panel at an angle of 15o to the specimen 2 specimen 3 specimen holder 4 framework supporting specimen holder 5 handle 6 flame front 7 pilot flame Figure 1 Schematic of test 5 Suitability of a product for testing 5.1 Surface characteri
49、stics 5.1.1 A product having one of the following characteristics is suitable for evaluation using this method: a) an essentially flat exposed surface, i.e. all surface irregularities are within 1 mm of plane; b) a surface irregularity that is evenly distributed over the exposed surface provided that 1) at least 50 % of the surface of a representative square area, 155 mm 155 mm, lies within a depth of 6 mm from a plane across the highest points of the exposed surface, an
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