BS EN ISO 10156-2010 气体和气体混合物.汽缸阀门排气口的选择用火灾隐患和氧化能力的测定.pdf

BS EN ISO 101562010 ICS 23.020.30; 71.100.20 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW BRITISH STANDARD Gases and gas mixtures Determination of fire potential and oxidizing ability for the selection of cylinder valve outlets ISO 101562010 This British Standard was published under the authority of the Standards Policy and Strategy Committee on 30 June 2010 BSI 2010 ISBN 978 0 580 53290 0 Amendments/corrigenda issued since publication Date Comments BS EN ISO 101562010 National foreword This British Standard is the UK implementation of EN ISO 101562010. It supersedes BS EN 720-21997 and BS EN ISO 10156-22005 which are withdrawn. The UK participation in its preparation was entrusted to Technical Committee PVE/3/1, Gas containers - Valve fittings for gas containers. A list of organizations represented on this committee can be obtained on request to its secretary. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard cannot confer immunity from legal obligations. 标准分享网 w w w .b z f x w .c o m 免费下载 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 10156 April 2010 ICS 23.020.30; 71.100.20 Supersedes EN 720-21996, EN ISO 10156-22005 English Version Gases and gas mixtures - Determination of fire potential and oxidizing ability for the selection of cylinder valve outlets ISO 101562010 Gaz et mlanges de gaz - Dtermination du potentiel dinflammabilit et doxydation pour le choix des raccords de sortie de robinets ISO 101562010 Gase und Gasgemische - Bestimmung der Brennbarkeid und des Oxidationsvermgens zur Auswahl von Ventilausgngen ISO 101562010 This European Standard was approved by CEN on 18 March 2010. 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 alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN Management Centre or to any CEN member. This European Standard exists in three official versions English, French, German. A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre Avenue Marnix 17, B-1000 Brussels 2010 CEN All rights of exploitation in any and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 101562010 E BS EN ISO 101562010 EN ISO 101562010 E 3 Foreword This document EN ISO 101562010 has been prepared by Technical Committee ISO/TC 58 “Gas cylinders“ in collaboration with Technical Committee CEN/TC 23 “Transportable gas cylinders”, the secretariat of which is held by BSI. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by October 2010, and conflicting national standards shall be withdrawn at the latest by October 2010. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights. This document supersedes EN 720-21996, EN ISO 10156-22005. This document has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association, and supports essential requirements of EU Directives. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. Endorsement notice The text of ISO 101562010 has been approved by CEN as a EN ISO 101562010 without any modification. 标准分享网 w w w .b z f x w .c o m 免费下载 w w w . b z f x w . c o m BS EN ISO 101562010 ISO 101562010E ISO 2010 – All rights reserved iii Contents Page Foreword ............................................................................................................................................................iv Introduction.........................................................................................................................................................v 1 Scope......................................................................................................................................................1 2 Terms, definitions, symbols and units................................................................................................1 2.1 Terms and definitions...........................................................................................................................1 2.2 Symbols..................................................................................................................................................2 2.3 Units........................................................................................................................................................3 3 Flammability of gases and gas mixtures in air ..................................................................................3 3.1 General ...................................................................................................................................................3 3.2 Test ...........................................................................................................................................3 3.2.1 Key points concerning safety ..............................................................................................................3 3.2.2 Principle..................................................................................................................................................3 3.2.3 Test apparatus and materials...............................................................................................................3 3.2.4 Procedure...............................................................................................................................................4 3.2.5 Results for pure gases..........................................................................................................................4 3.3 Calculation for mixtures containing n flammable gases and p inert gases.......................7 3.4 Examples..............................................................................................................................................11 3.5 Classification according to the Globally Harmonized System GHS............................................12 4 Oxidizing power of gases and gas mixtures ....................................................................................12 4.1 General .................................................................................................................................................12 4.2 Test .........................................................................................................................................12 4.2.1 Key points concerning safety ............................................................................................................12 4.2.2 Principle................................................................................................................................................12 4.2.3 Test apparatus.....................................................................................................................................13 4.2.4 Procedure.............................................................................................................................................16 4.2.5 Results..................................................................................................................................................16 4.3 Calculation .............................................................................................................................16 4.3.1 Principle................................................................................................................................................16 4.3.2 Ci coefficients ......................................................................................................................................17 5 Mixtures containing oxygen and flammable gases .........................................................................18 5.1 General .................................................................................................................................................18 5.2 Basis of flammability classification...................................................................................................20 5.3 Examples..............................................................................................................................................22 Annex A inative Classification according to the Globally Harmonized System GHS...................24 Bibliography......................................................................................................................................................25 w w w . b z f x w . c o m BS EN ISO 101562010 ISO 101562010E iv ISO 2010 – All rights reserved 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 10156 was prepared by Technical Committee ISO/TC 58, Gas cylinders, Subcommittee SC 2, Cylinder fittings. This third edition of ISO 10156 cancels and replaces ISO 101561996 and ISO 10156-22005. It gives updated data for flammability and oxidizing ability. 标准分享网 w w w .b z f x w .c o m 免费下载 w w w . b z f x w . c o m BS EN ISO 101562010 ISO 101562010E ISO 2010 – All rights reserved v Introduction ISO 5145 [1] and other related standards establish practical criteria for the determination of outlet connections of cylinder valves. These criteria are based on certain physical and chemical properties of the gases. In particular, the flammability in air and the oxidizing ability are considered. One of the potential complications that prompted the development of this International Standard is that whilst there are abundant data in the literature relating to pure gases, differences can be found, depending upon the test s employed; in the case of gas mixtures, data in the literature are often incomplete or even non- existent. The initial aim of this International Standard was to eliminate the ambiguities in the case of differences in the literature, and above all, to supplement existing data mainly in the case of gas mixtures. Subsequently, this International Standard was used for other purposes than the selection of cylinder valve outlets, such as establishing flammability and oxidizing potential data for labelling according to international transport regulations and dangerous substances regulations, under the umbrella of the Globally Harmonized System GHS. w w w . b z f x w . c o m BS EN ISO 101562010 标准分享网 w w w .b z f x w .c o m 免费下载 w w w . b z f x w . c o m BS EN ISO 101562010 INTERNATIONAL STANDARD ISO 101562010E ISO 2010 – All rights reserved 1 Gases and gas mixtures Determination of fire potential and oxidizing ability for the selection of cylinder valve outlets 1 Scope This International Standard specifies s for determining whether or not a gas or gas mixture is flammable in air and whether a gas or gas mixture is more or less oxidizing than air under atmospheric conditions. This International Standard is intended to be used for the classification of gases and gas mixtures including the selection of gas cylinder valve outlets. This International Standard does not cover the safe preparation of these mixtures under pressure and at temperatures other than ambient. 2 Terms, definitions, symbols and units 2.1 Terms and definitions For the purposes of this document, the following terms and definitions apply. 2.1.1 gas or gas mixture flammable in air gas or gas mixture that is ignitable in air at atmospheric pressure and a temperature of 20 C 2.1.2 lower flammability limit in air minimum content of a gas or gas mixture in an homogeneous mixture with air at which a flame just starts to propagate NOTE 1 The lower flammability limit is determined at atmospheric conditions. NOTE 2 The term “flammability limit”, as used in this International Standard, is sometimes called “explosion limit”. 2.1.3 upper flammability limit in air maximum content of a gas or gas mixture in an homogeneous mixture with air at which a flame just starts to propagate NOTE 1 The upper flammability limit is determined at atmospheric conditions. NOTE 2 The term “flammability limit”, as used in this International Standard, is sometimes called “explosion limit”. 2.1.4 flammability rang