ISO 3941-2007 Classification of fires (火灾分类)

Reference number ISO 3941:2007(E) © ISO 2007 INTERNATIONAL STANDARD ISO 3941 Second edition 2007-09-15 Classification of fires Classes de feux ISO 3941:2007(E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adobe's licensing policy, this file may be printed or viewed but shall not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In downloading this file, parties accept therein the respons bility of not infringing Adobe's licensing policy. The ISO Central Secretariat accepts no liability in this area. Adobe is a trademark of Adobe Systems Incorporated. Details of the software products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation parameters were optimized for printing. Every care has been taken to ensure that the file is suitable for use by ISO member bodies. In the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below. COPYRIGHT PROTECTED DOCUMENT © ISO 2007 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or ISO's member body in the country of the requester. ISO copyright office Case postale 56 • CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail copyright@iso.org Web www.iso.org Published in Switzerland ii © ISO 2007 – All rights reserved ISO 3941:2007(E) © ISO 2007 – All rights reserved iii 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 which 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 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 circulated 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 responsible for identifying any or all such patent rights. ISO 3941 was prepared by Technical Committee ISO/TC 21, Equipment for fire protection and fire fighting, Subcommittee SC 2, Manually transportable fire extinguishers. This second edition cancels and replaces the first edition (ISO 3941:1977), which has been technically revised. ISO 3941:2007(E) iv © ISO 2007 – All rights reserved Introduction This International Standard defines classes of fires according to the nature of the material undergoing combustion. In consequence, it does not define a particular class of fire involving an electrical risk. INTERNATIONAL STANDARD ISO 3941:2007(E) © ISO 2007 – All rights reserved 1 Classification of fires 1 Scope This International Standard classifies, into five categories, the different kinds of fires defined in terms of the nature of the fuel. Such a classification is particularly useful in the context of fire-fighting by means of an extinguisher. 2 Definitions and designation of classes of fire The following designations are for the purpose of classifying fires of different natures and of simplifying spoken and written reference to them: ⎯ Class A Fires involving solid materials, usually of an organic nature, in which combustion normally takes place with the formation of glowing embers; ⎯ Class B Fires involving liquids or liquefiable solids; ⎯ Class C Fires involving gases; ⎯ Class D Fires involving metals; ⎯ Class F Fires involving cooking media (vegetable or animal oils and fats) in cooking appliances. ISO 3941:2007(E) ICS 13.220.01 Price based on 1 page © ISO 2007 – All rights reserved