ISO 6944-2-2009 Fire containment - Elements of building construction - Part 2 Kitchen extract ducts《防火系统 建筑结构的构件 第2部分 厨房排气管道》.pdf
《ISO 6944-2-2009 Fire containment - Elements of building construction - Part 2 Kitchen extract ducts《防火系统 建筑结构的构件 第2部分 厨房排气管道》.pdf》由会员分享,可在线阅读,更多相关《ISO 6944-2-2009 Fire containment - Elements of building construction - Part 2 Kitchen extract ducts《防火系统 建筑结构的构件 第2部分 厨房排气管道》.pdf(24页珍藏版)》请在麦多课文档分享上搜索。
1、 Reference number ISO 6944-2:2009(E) ISO 2009INTERNATIONAL STANDARD ISO 6944-2 First edition 2009-06-15 Fire containment Elements of building construction Part 2: Kitchen extract ducts Endiguement du feu lments de construction Partie 2: Conduits de ventilation de la cuisine ISO 6944-2:2009(E) PDF di
2、sclaimer This PDF file may contain embedded typefaces. In accordance with Adobes 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, partie
3、s accept therein the responsibility of not infringing Adobes 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
4、 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 PR
5、OTECTED DOCUMENT ISO 2009 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 ISOs
6、 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 copyrightiso.org Web www.iso.org Published in Switzerland ii ISO 2009 All rights reservedISO 6944-2:2009(E) ISO 2009 All rights reserved iii Conten
7、ts Page Foreword iv Introduction v 1 Scope 1 2 Normative references 1 3 Terms and definitions .1 4 Test equipment 2 4.1 Fire outside duct2 4.2 Fire inside duct 2 5 Test conditions 3 5.1 Fire outside duct3 5.2 Fire inside duct 3 6 Instrumentation3 6.1 Fire outside duct3 6.2 Fire inside duct 3 7 Test
8、construction.8 7.1 Fire outside duct8 7.2 Fire inside duct 8 8 Test procedure.9 8.1 Fire outside duct9 8.2 Fire inside duct 9 9 Performance criteria11 9.1 Fire outside duct11 9.2 Fire inside duct 11 10 Expression of results 11 11 Test report 12 Annex A (normative) Optional test equipment and instrum
9、entation Fire inside duct 13 Annex B (informative) Historical information.15 Bibliography 17 ISO 6944-2:2009(E) iv ISO 2009 All rights reservedForeword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of pre
10、paring 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
11、 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
12、 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
13、 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 6944-2 was prepared by Technical Committee ISO/TC 92, Fire safety, Subcommittee SC 2, Fire containment. IS
14、O 6944 consists of the following parts, under the general title Fire containment Elements of building construction: Part 1: Ventilation ducts Part 2: Kitchen extract ducts ISO 6944-2:2009(E) ISO 2009 All rights reserved v Introduction The purpose of this part of ISO 6944 is to measure the ability of
15、 a representative duct or duct assembly that is part of a kitchen extract duct system to resist the spread of fire from one fire compartment to another with the fire attack being from either the inside of the duct or from the outside of the duct. This part of ISO 6944 is applicable to vertical and h
16、orizontal ducts, with or without branches, taking into account joints and exhaust openings, as well as suspension devices and penetration points. The test method representing a fire attack from the inside of the duct first simulates temperatures within a kitchen extract duct during normal operation
17、followed by simulating the temperatures during a fire within the duct. For kitchen extract ducts, the inevitable build-up of grease on the inside surfaces can lead to a severe fire exposure and this is represented in the test method described in this part of ISO 6944. A burner assembly, attached to
18、a horizontal L-shaped combustion chamber, develops the heat required to obtain the temperatures. The combustion chamber is attached to the sample kitchen extract duct assembly. The kitchen extract duct is also L-shaped with both horizontal and vertical components. The test method representing a fire
19、 attack from the outside of the duct exposes the kitchen extract duct to furnace conditions defined in ISO 834-1. The test method includes provisions for assessment of the penetration seal surrounding the kitchen extract as the duct passes through a fire resistive barrier. The test method evaluates
20、the structural integrity of the kitchen extract duct by having the duct restrained within the furnace during the fire exposure. INTERNATIONAL STANDARD ISO 6944-2:2009(E) ISO 2009 All rights reserved 1 Fire containment Elements of building construction Part 2: Kitchen extract ducts CAUTION The attent
21、ion of all persons concerned with managing and carrying out of this fire resistance test is drawn to the fact that fire testing can be hazardous and there is a possibility that toxic and/or harmful smoke and gases can be evolved during the test. Mechanical and operational hazards can also arise duri
22、ng the construction of the test elements or structures, their testing and disposal of test residues. It is strongly recommended that the duct assembly be allowed to cool completely after the fire test before dismantling to minimize the possibility of the ignition of combustible residues. An assessme
23、nt of all potential hazards and risks to health shall be made and safety precautions shall be identified and provided. Written safety instructions shall be issued. Appropriate training shall be given to relevant personnel. Laboratory personnel shall ensure that they follow written safety instruction
24、s at all times. 1 Scope This part of ISO 6944 establishes a method of test in which kitchen extract ducts are required to provide fire resistance. The requirements are intended to limit the spread of fire from the duct when a fire occurs within the duct and assesses the structural integrity of the d
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- ISO694422009FIRECONTAINMENTELEMENTSOFBUILDINGCONSTRUCTIONPART2KITCHENEXTRACTDUCTS 防火 系统 建筑结构 构件 部分 厨房

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