BS EN 720-1-1999 Transportable gas cylinders Gases and gas mixtures Part 1 Properties of pure gases.pdf
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1、| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | BRITISH STANDARD BS EN 720-1:1999 The Euro
2、pean Standard EN 720-1:1999 has the status of a British Standard ICS 23.020.30; 71.100.20; 75.160.30 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW Transportable gas cylinders Gases and gas mixtures Part 1: Properties of pure gases This British Standard, having been prepared
3、under the direction of the Engineering Sector Committee, was published under the authority of the Standards Committee and comes into effect on 15 August 1999 BSI 08-1999 ISBN 0 580 32138 X BS EN 720-1:1999 Amendments issued since publication Amd. No.DateComments National foreword This British Standa
4、rd is the English language version of EN 720-1:1999. The UK participation in its preparation was entrusted by Technical Committee PVE/3, Gas containers, to Subcommittee PVE/3/1, Valve fittings for gas cylinders, which has the responsibility to: aid enquirers to understand the text; present to the re
5、sponsible 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 subcommittee can be obtained
6、 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 facility
7、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 obligations
8、. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 8, an inside back cover and a back cover. The BSI copyright notice displayed throughout this document indicates when this document was last issued. CEN European Committee for Standardizatio
9、n Comite Europe en de Normalisation Europa isches Komitee fu r Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels 1999 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 720-1:1999 E EUROPEAN STANDARDEN 720-1 NORME EUROP
10、E ENNE EUROPA ISCHE NORM April 1999 ICS 23.020.30; 71.100.20; 75.160.30 English version Transportable gas cylinders Gases and gas mixtures Part1:Properties of pure gases Bouteilles a gaz transportables Gaz et me langes de gaz Partie 1: Proprie te s des gaz purs Ortsbewegliche Gasflaschen Gase und Ga
11、sgemische Teil 1: Eigenschaften von Einzel Gasen This European Standard was approved by CEN on 20 December 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 al
12、teration. 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 tra
13、nslation 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
14、, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. Page 2 EN 720-1:1999 BSI 08-1999 Foreword This European Standard has been prepared by Technical Committee CEN/TC 23, Transportable gas cylinders, the Secretariat of which is held by BSI. This European
15、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 1999, and conflicting national standards shall be withdrawn at the latest by October 1999. According to the CEN/CENELEC Internal Regulations, the national
16、 standards organizations of the following countries are bound to 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. This
17、European Standard has been submitted for reference into the RID and/or in the technical annexes of the ADR. Therefore in this context the standards listed in the normative references and covering basic requirements of the RID/ADR not addressed within the present standard are normative only when the
18、standards themselves are. Contents Page Foreword3 Introduction3 1Scope3 2Normative references3 3Definitions3 4Properties of gas mixtures3 5Code number4 6List of gases4 Page 3 EN 720-1:1999 BSI 08-1999 Introduction In Europe there are 2 existing Directives which deal with the classification of gases.
19、 One relates to Dangerous Substances and Preparations, the other to the Transport of Dangerous Goods (ADR). These Directives have several conflicting classifications, e.g. toxicity is expressed in volume parts per million (p.p.m.V) in the ADR Directive and in milligrams per litre (mg/l) in the Subst
20、ances and Preparations Directive. The purpose of this standard is to list the properties of individual gases to facilitate the selection of valve outlets. This is different from the scope of the two Directives mentioned above, which are concerned with hazard identification and transport matters resp
21、ectively. Consequently this standard is not in conflict with either of the two above Directives as it specifically addresses the risks of misconnection of equipment e.g. Chlorine is not an oxidant according to Transport Regulations, but the risk of mixing this gas with flammable gas is well known an
22、d is addressed in this standard. 1 Scope The purpose of this part of EN 720 is to define the properties of gases on the basis of four main physicalchemical criteria i.e. fire potential, toxicity, state of gas and corrosiveness (see clause 3) for the purpose of the selection of suitable valve outlets
23、. NOTESee 3.4 for the definition of corrosiveness. 2 Normative references This European Standard incorporates by dated or undated reference, provisions from other publications. These normative references are cited at the appropriate places in the text and the publications are listed hereafter. For d
24、ated references, subsequent amendments to or revisions of any of these publications apply to this European Standard only when incorporated in it by amendment or revision. For undated references the latest edition of the publication referred to applies. EN 720-2, Classification of gases and gas mixtu
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