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1、BRITISH STANDARD BS EN ISO 5659-2:1999 Plastics Smoke generation Part 2: Determination of optical density by a single chamber test The European Standard EN ISO 5659-2:1998 has the status of a British Standard ICS 13.220.40; 83.080.01 Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 18 02:18:40 GM
2、T+00:00 2006, Uncontrolled Copy, (c) BSI BS EN ISO 5659-2:1999 This British Standard, having been prepared under the direction of the Sector Committee for Materials and Chemicals, was published under the authority of the Standards Committee and comes into effect on 15 January 1999 BSI 05-1999 ISBN 0
3、 580 30999 1 National foreword This British Standard is the English language version of EN ISO 5659-2:1998. It is identical with ISO 5659-2:1994 and incorporates Technical Corrigendum 1 to that standard, issued 1997-03-01. It supersedes BS ISO 5659-2:1994 which is withdrawn. The UK participation in
4、its preparation was entrusted to Technical Committee PRI/26, Burning behaviour of plastics and rubbers, which has the responsibility to: aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and
5、 keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. A list of organizations represented on this committee can be obtained on request to its secretary. Cross-references Attention is drawn to the fact that CEN and CENELEC standards no
6、rmally include an annex which lists normative references to international publications with their corresponding European publications. The British Standards which implement these international or European publications may be found in the BSI Standards Catalogue under the section entitled “Internatio
7、nal Standards Correspondence Index”, or by using the “Find” facility of the BSI Standards Electronic Catalogue. 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 Briti
8、sh Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, the EN ISO title page, page 2, the ISO title page, pages ii to iv, pages 1 to 25 and a back cover. This standard has been updated (see
9、 copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover. Amendments issued since publication Amd. No.DateComments Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 18 02:18:40 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS E
10、N ISO 5659-2:1999 BSI 05-1999i Contents Page National forewordInside front cover Foreword2 Forewordiii Text of ISO 5659-21 Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 18 02:18:40 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ii blank Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 18 02:18:
11、40 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 5659-2 August 1998 ICS 83.080.01 Descriptors: See ISO document English version Plastics Smoke generation Part 2: Determination of optical density by a single-chamber test (ISO 5659-2:1994, includin
12、g Technical Corrigendum 1:1997) Plastiques Production de fume Partie 2: Dtermination de la densit optique par un essai en enceinte unique (ISO 5659-2:1994, Rectificatif Technique 1:1997 inclus) Kunststoffe Rauchentwicklung Teil 2: Bestimmung der optischen Dichte durch Einkammerprfung (ISO 5659-2:199
13、4, einschlielich Technische Korrektur 1:1997) This European Standard was approved by CEN on 12 June 1998. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteratio
14、n. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the Central Secretariat or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translatio
15、n under the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy
16、, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CEN European Committee for Standardization Comit Europen de Normalisation Europisches Komitee fr Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels 1998 CEN All rights of exploitation in any for
17、m and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 5659-2:1998 E Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 18 02:18:40 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN ISO 5659-2:1998 BSI 05-1999 2 Foreword The text of the International Standard from Technical Com
18、mittee ISO/TC 61 “Plastics” of the International Organization for Standardization (ISO) has been taken over as an European Standard by Technical Committee CEN/TC 249 “Plastics”, the secretariat of which is held by IBN. This European Standard shall be given the status of a national standard, either b
19、y publication of an identical text or by endorsement, at the latest by February 1999, and conflicting national standards shall be withdrawn at the latest by February 1999. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to
20、implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom. Endorsement notice The text of the International Standard ISO 5659-2:1
21、994, including Technical Corrigendum 1:1997 has been approved by CEN as a European Standard without any modification. NOTENormative references to International Standards are listed in Annex ZA (normative). Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 18 02:18:40 GMT+00:00 2006, Uncontrolled C
22、opy, (c) BSI Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 18 02:18:40 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN ISO 5659-2:1998 ii BSI 05-1999 Contents Page Forewordiii Introduction1 1Scope1 2Normative references2 3Definitions2 4Principles of the test2 5Suitability of a material for testi
23、ng3 6Specimen construction and preparation3 7Apparatus and ancillary equipment4 8Test environment13 9Setting-up and calibration procedures13 10Test procedure17 11Expression of results18 12Precision19 13Test report19 Annex A (normative) Calibration of heat flux meter20 Annex B (informative) Variabili
24、ty in the specific optical density of smoke measured in the single-chamber test20 Annex C (informative) Determination of mass optical density (MOD)22 Annex ZA (normative) Normative references to international publications with their relevant European publications25 Figure 1 Typical arrangement of te
25、st apparatus5 Figure 2 Plan view of typical test chamber6 Figure 3 Typical chamber pressure relief manometer7 Figure 4 Typical framework for support of radiator cone, specimen holder and flux meter8 Figure 5 Typical arrangement of radiator cone, specimen holder and radiator shield (side view)9 Figur
26、e 6 Typical arrangement of radiator cone, specimen holder and radiator shield (front view)10 Figure 7 Specimen holder11 Figure 8 Photometric system12 Figure C.1 Typical framework for support of radiator cone, specimen and flux meter23 Figure C.2 Typical arrangement of radiator cone, specimen holder
27、and radiator shield with load cell for mass optical density determination (side view)24 Figure C.3 Typical arrangement of radiator cone, specimen holder and radiator shield (front view)25 Table 1 Correction factors with range extension filter (ND-2) removed16 Table 2 Frequency of checks and calibrat
28、ions17 Table B.1 Repeatability and reproducibility of specific optical density for plastics21 Table B.2 Repeatability and reproducibility of specific optical density for building materials21 Descriptors: Plastics, tests, high temperature tests, determination, smoke generation, test equipment, specim
29、en preparation. Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 18 02:18:40 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN ISO 5659-2:1998 BSI 05-1999iii Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). T
30、he work of preparing International 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, governmental and non-go
31、vernmental, 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
32、 voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. International Standard ISO 5659-2 was prepared by Technical Committee ISO/TC 61, Plastics, Subcommittee SC 4, Burning behaviour. ISO 5659 consists of the following parts, under t
33、he general title Plastics Smoke generation: Part 1: Guidance; Part 2: Determination of optical density by a single-chamber test; Part 3: Determination of optical density by dynamic flow. Annex A forms an integral part of this part of ISO 5659. Annex B and Annex C are for information only. Licensed C
34、opy: sheffieldun sheffieldun, na, Sat Nov 18 02:18:40 GMT+00:00 2006, Uncontrolled Copy, (c) BSI iv blank Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 18 02:18:40 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN ISO 5659-2:1998 BSI 05-19991 Introduction Fire is a complex phenomenon: its developm
35、ent 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 environment in which they are exposed (see also ISO/TR 3814 and ISO/IEC Guide 52). A test such as is spec
36、ified in this part of ISO 5659 deals only with a simple representation of a particular aspect of the potential fire situation, typified by a radiant heat source, and it cannot alone provide any direct guidance on behaviour or safety in fire. A test of this type may, however, be used for comparative
37、purposes or to ensure the existence of a certain quality of performance (in this case smoke production) considered to have a bearing on fire behaviour generally. It would be wrong to attach any other meaning to results from this test. The term “smoke” is defined in ISO/IEC Guide 52 as a visible susp
38、ension of solid and/or liquid particles in gases resulting from incomplete combustion. It is one of the first response characteristics to be manifested and should almost always be taken into account in any assessment of fire hazard as it represents one of the greatest threats to occupants of a build
39、ing on fire. The responsibility for the preparation of ISO 5659 was transferred during 1987 from ISO/TC 92 to ISO/TC 61 on the understanding that the scope and applicability of the standard for the testing of materials should not be restricted to plastics but should also be relevant to other materia
40、ls where possible, including building materials. The attention of all users of this test is drawn to the warnings which immediately precede the “Scope” clause. WARNING 1 Avoidance of misleading inferences This standard method of test should be used solely to measure and describe the properties of ma
41、terials, products or systems in response to heat or flame under controlled laboratory conditions, and should not be considered or used by itself for describing or appraising the fire hazard of materials, products or systems under actual fire conditions or as the sole source on which regulations pert
42、aining to smoke production can be based. 2 Avoidance of danger to test operators So that suitable precautions to safeguard health are taken, the attention of all concerned in fire tests is drawn to the fact that harmful gases are evolved in combustion of test specimens. Care must also be taken durin
43、g cleaning operations on the smoke chamber to avoid inhalation of fumes or skin-contact with smoke deposits. Attention is drawn to the hazards arising from the hot radiator cone, and the use of a mains-voltage electricity supply. A safety blow-out panel, as specified in 7.2.1.1, is essential for the
44、 protection of operators from the risk of explosion from sudden pressure surges. 1 Scope 1.1 This part of ISO 5659 specifies a method of measuring smoke production from the exposed surface of specimens of essentially flat materials, composites or assemblies not exceeding 25 mm in thickness when plac
45、ed 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 and may also be used for the evaluation of other materials (e.g. rubbers, textile-coverings,
46、painted surfaces, wood and other building materials). 1.2 Values of optical density determined by this test are specific to the specimen or assembly material in the form and thickness tested, and are not to be considered inherent, fundamental properties. 1.3 The test is intended for use in research
47、and development and not primarily as a basis for ratings for building codes or other purposes. No basis is provided for predicting the density of smoke which may be generated by the materials upon exposure to heat and flame under other exposure conditions, nor has any correlation been established wi
48、th measurements derived from other test methods. The fact that this test procedure excludes the effect of irritants on the eye should also be taken into account when applying the test results. 1.4 It is emphasized that smoke production from a material varies according to the irradiance level to whic
49、h the specimen is exposed. In making use of the results of this method, it should be borne in mind that the results are based on exposure to the specific irradiance levels of 25 kW/m2 and 50 kW/m2. Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 18 02:18:40 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN ISO 5659-2:1998 2 BSI 05-1999 2 Normative references The following standards contain provisions which, through reference in this text, constitute provisions of this part of ISO 5659. At the time of publica
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