BS-ISO-11907-3-1998.pdf
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1、BRITISH STANDARD BS ISO 11907-3:1998 Plastics Smoke generation Determination of the corrosivity of fire effluents Part 3: Dynamic decomposition method using a travelling furnace ICS 13.220.40; 83.080.01 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 03:52:59 GMT+00:00 2006, Uncontrolled Copy
2、, (c) BSI BS ISO 11907-3:1998 This British Standard, having been prepared under the direction of the Sector Board for Materials and Chemicals, was published under the authority of the Standards Board and comes into effect on 15 June 1998 BSI 05-1999 ISBN 0 580 29924 4 National foreword This British
3、Standard reproduces verbatim ISO 11907-3:1998 and implements it as the UK national standard. The UK participation in 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
4、to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and 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 ob
5、tained on request to its secretary. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Standards Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Find”
6、 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 British Standard does not of itself confer immunity from legal o
7、bligations. Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, the ISO title page, pages ii to iv, pages 1 to 16 and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the a
8、mendment table on the inside front cover. Amendments issued since publication Amd. No.DateComments Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 03:52:59 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS ISO 11907-3:1998 BSI 05-1999i Contents Page National forewordInside front cover Forewordiii
9、 Text of ISO 11907-31 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 03:52:59 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ii blank Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 03:52:59 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26
10、03:52:59 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS ISO 11907-3:1998 ii BSI 05-1999 Contents Page Forewordiii Introduction1 1Scope1 2Normative references1 3Definitions2 4Principle2 5Apparatus2 6Setting-up and calibration procedures4 7Preparation of test samples5 8Procedure6 9Cleaning procedure6 1
11、0Expression of results7 11Precision7 12Test report7 Annex A (normative) Alternative corrosion targets11 Annex B (informative) Exposure in a flow-through chamber13 Annex C (informative) Bibliography16 Figure 1 Typical decomposition apparatus and exposure of single corrosion target7 Figure 2 Cuvette8
12、Figure 3 Reference body8 Figure 4 Copper printed wiring board9 Figure 5 Water-cooled holder for corrosion targets9 Figure 6 Segmentation with loose bulk materials10 Figure A.1 Holder without cooling system13 Figure B.1 Typical flow-through exposure chamber14 Figure B.2 Use of a flow-through exposure
13、 chamber Components of equipment assembled15 Table 14 Table 25 Table A.1 Cleaning solutions11 Table A.2 Parameters which may be used to characterize corrosive attack12 Descriptors: Plastics, smoke generation, combustion products, gaseous effluents, smoke, corrosion, tests, determination, corrosivity
14、, dynamic tests. Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 03:52:59 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS ISO 11907-3:1998 BSI 05-1999iii Foreword ISO (the International Organization for Standardization) is a world-wide federation of national standards bodies (ISO member bodies)
15、. The 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
16、-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 f
17、or voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. International Standard 11907-3 was prepared by Technical Committee ISO/TC61, Plastics, Subcommittee SC 4, Burning behaviour. ISO 11907 consists of the following parts, under th
18、e general title Plastics Smoke generation Determination of the corrosivity of fire effluents: Part 1: Guidance; Part 2: Static method; Part 3: Dynamic decomposition method using a travelling furnace; Part 4: Dynamic decomposition method using a conical radiant heater. Annex A forms an integral part
19、of this part of ISO 11907. Annex B and Annex C are for information only. Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 03:52:59 GMT+00:00 2006, Uncontrolled Copy, (c) BSI iv blank Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 03:52:59 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS I
20、SO 11907-3:1998 BSI 05-19991 Introduction This method of test is one of a series being developed by ISO/TC61/SC4 concerning fire tests on plastics and other combustible materials to help assess the corrosivity of their fire effluents. This test was developed in close connection with the work done in
21、 ISO/TC92/SC3. During a fire, hot and humid smoke may be carried throughout the building, and its various products may condense and settle down on the surfaces of walls, floors and e.g. machines and electronic equipment.In principle, smoke should always be expected to have a corrosive action, irresp
22、ective of the composition of the material. Corrosion is generally defined as decomposition, beginning at the surface, of metallic and non-metallic materials. The degree of damage, however, is specific both to the composition of the smoke and to the nature of the materials. The concentrations of the
23、harmful substances depend on e.g. the ventilation and the scale of the fire, while the loss itself depends partly on factors unrelated to the actual fire, such as the air conditions in the rooms of the building, the hygroscopic behaviour of the construction materials and the nature, scale and timing
24、 of the rebuilding work. WARNINGS 1 Avoidance of misleading inferences This standard method of test should be used solely to measure and describe the properties of materials, products or systems in response to heat or flame under controlled laboratory conditions and should not be considered or used
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