1、BS EN ISO 14456:2016Gas cylinders Gas properties and associated classification(FTSC) codes (ISO 14456:2015)BSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06BS EN ISO 14456:2016 BRITISH STANDARDNational forewordThe UK participation in its preparation was entrusted by T
2、echnicalCommittee PVE/3, Gas containers, to Subcommittee PVE/3/1, A list of organizations represented on this subcommittee can beobtained on request to its secretary.This publication does not purport to include all the necessaryprovisions of a contract. Users are responsible for its correctapplicati
3、on. The British Standards Institution 2016.Published by BSI Standards Limited 2016ISBN 978 0 580 93209 0ICS 23.020.30Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of theStandards Policy and Strategy Committee o
4、n 31 October 2015.Amendments/corrigenda issued since publicationDate T e x t a f f e c t e dThis corrigendum renumbers BS ISO 14456:2015 as31 October 2016BS EN ISO 14456:2016Gas containers - Valve fittings for gas containers.This British Standard is the UK implementation of EN ISO 14456:2016. It is
5、identical to ISO 14456:2015. It supersedes BS ISO 14456:2015, which is withdrawn.EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 14456 September 2016 ICS 23.020.30 English Version Gas cylinders - Gas properties and associated classification (FTSC) codes (ISO 14456:2015) Bouteilles gaz - Pro
6、prits des gaz et codes de classification associs (FTSC) (ISO 14456:2015) Gasflaschen - Eigenschaften von Gasen und zugehrige Klassifizierungscodes (FTSC) (ISO 14456:2015) This European Standard was approved by CEN on 2 September 2016. CEN members are bound to comply with the CEN/CENELEC Internal Reg
7、ulations 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-CENELEC Management Centre or to any CEN mem
8、ber. 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-CENELEC Management Centre has the same status as the official versions.
9、CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland
10、, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey andUnited Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2016 CEN All rights of exploitation in
11、any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 14456:2016 EEN ISO 14456:2016 (E) European foreword The text of ISO 14456:2015 has been prepared by Technical Committee ISO/TC 58 “Gas cylinders” of the International Organization for Standardization (ISO) and has
12、 been taken over as EN ISO 14456:2016 by 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 March
13、2017, and conflicting national standards shall be withdrawn at the latest by March 2017. 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 right
14、s. 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, Former Yugoslav Republic of Macedonia, France,
15、Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. Endorsement notice The text of ISO 14456:2015 has been approved by CEN as EN ISO 144
16、56:2016 without any modification. iiBS EN ISO 14456:2016ISO 14456:2015(E)Foreword ivIntroduction v1 Scope . 12 Normative references 13 Terms and definitions . 14 Gas properties .24.1 Numerical gas code (FTSC) 24.1.1 General 24.1.2 Fire potential, category I . 24.1.3 Acute toxicity, category II . 34.
17、1.4 State of the gas (in the cylinder at 15 C), category III 34.1.5 Corrosiveness, category IV 35 List of gases and liquids with the corresponding FTSC codes . 45.1 Basic principles and single gases 45.2 Assignment of a gas mixture to a group 45.3 Tables of compatible groups of gases and liquids 5Bi
18、bliography .17 ISO 2015 All rights reserved iiiContents PageBS EN ISO 14456:2016ISO 14456:2015(E)ForewordISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carr
19、ied 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.
20、ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.The procedures used to develop this document and those intended for its further maintenance are described in the ISO/IEC Directives, Part 1. In particular the differen
21、t approval criteria needed for the different types of ISO documents should be noted. This document was drafted in accordance with the editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).Attention is drawn to the possibility that some of the elements of this document may be
22、 the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of any patent rights identified during the development of the document will be in the Introduction and/or on the ISO list of patent declarations received (see www.iso.org/patents).
23、Any trade name used in this document is information given for the convenience of users and does not constitute an endorsement.For an explanation on the meaning of ISO specific terms and expressions related to conformity assessment, as well as information about ISOs adherence to the WTO principles in
24、 the Technical Barriers to Trade (TBT), see the following URL: Foreword Supplementary information .The committee responsible for this document is ISO/TC 58, Gas cylinders, SC 2, Cylinder fittings.iv ISO 2015 All rights reservedBS EN ISO 14456:2016ISO 14456:2015(E)IntroductionThis International Stand
25、ard establishes a method of allocating a four-digit code number (FTSC) to any gas, liquids that are transported under pressure or mixture of gases contained in cylinders. This code number categorizes the gas, liquids that are transported under pressure or gas mixture in terms of its physical-chemica
26、l properties and/or flammability, toxicity, state of the gas, and corrosiveness (see 4.1). FTSC is the abbreviation of these properties.The FTSC code enables a gas, liquids that are transported under pressure or gas mixture to be assigned to one of the 15 “compatible” gas groups.The FTSC codes and t
27、he method for their determination are currently given in ISO 5145:2014, Annex A for use in the selection of valve outlets. This annex from ISO 5145 will be removed when the present standard is published.The properties and the selection criteria are aligned as appropriate with the Globally Harmonized
28、 System for the Classification and Labelling of Chemicals (GHS). ISO 2015 All rights reserved vBS EN ISO 14456:2016BS EN ISO 14456:2016Gas cylinders Gas properties and associated classification (FTSC) codes1 ScopeThis International Standard gives a list of FTSC (fire potential, i.e. “oxidizing poten
29、tial and flammability”, toxicity, state of the gas, and corrosiveness) codes determined according to the relevant properties of gases and of some liquids that are transported under pressure.It does not cover gas material compatibility which is covered by ISO 11114 (all parts).2 Normative referencesT
30、he following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.ISO 10156
31、, Gases and gas mixtures Determination of fire potential and oxidizing ability for the selection of cylinder valve outletsISO 10298, Determination of toxicity of a gas or gas mixtureISO 10286:2015, Gas cylinders Terminology3 Terms and definitionsFor the purposes of this document, the following terms
32、 and definitions apply.3.1gas mixturecombination of different single gases deliberately mixed in specified proportionsSOURCE: ISO 10286:2015, definition 7043.2liquefied gasgas, which, when packaged for transport, is partially liquid (or solid) at temperature above 50 CSOURCE: ISO 10286:2015, definit
33、ion 7063.3compressed gasgas, which, when packaged under pressure for transport, is entirely gaseous at 50 CNote 1 to entry: This category includes all gases with a critical temperature less than or equal to 50 C.SOURCE: ISO 10286:2015, definition 705INTERNATIONAL STANDARD ISO 14456:2015(E) ISO 2015
34、All rights reserved 1BS EN ISO 14456:2016ISO 14456:2015(E)3.4lethal concentration 50LC50concentration of a gas (or a gas mixture) in air administered by a single exposure during a short period of time (24 h or less) to a group of young adult albino rats (males and females) which leads to the death o
35、f half of the animals in at least 14 dSOURCE: ISO 10298:2010, definition 2.14 Gas properties4.1 Numerical gas code (FTSC)4.1.1 GeneralThe code number assigned to a gas or liquid is based on the following four physical-chemical properties:a) Category I (F): fire potential, defining the gas behaviour
36、with respect to combustion;b) Category II (T): acute toxicity;c) Category III (S): gas state, defining the physical state of the fluid in the cylinder at 15 C within a given pressure range;d) Category IV (C): corrosiveness (ability to damage or destroy living tissues: eyes, skin, and mucous membrane
37、s).Each category is subdivided into different characteristics (subdivisions), each identified by a different digit. In this way, a gas in a given state is characterized by a series of four digits (one digit per category) as illustrated below.4.1.2 Fire potential, category ISubdivision 0: inert (any
38、gas not classified under subdivisions 1 to 5 below);Subdivision 1: supports combustion (gas having an oxidizing power equal to or less than a mixture containing 23,5 % of oxygen in nitrogen);Subdivision 2: flammable (gas having flammability limits in air);NOTE 1 See ISO 10156 for more information.Su
39、bdivision 3: pyrophoric (spontaneously flammable);Subdivision 4: oxidizing (gas having an oxidizing power greater than a mixture containing 23,5 % O2in N2);NOTE 2 See ISO 10156 for more information.Subdivision 5: chemically unstable (flammable and subject to rapid decomposition or polymerization).NO
40、TE 3 When considering the properties of gases from subdivisions 1 and 4, the following applies:a) Subdivision 4 considers the risk of accelerating combustion more than air does;b) For gas material compatibility with gases under pressure of subdivisions 1 and 4, it is considered that the risk of igni
41、tion exists when the oxygen partial pressure is more than 30 bar;c) For valves outlet selection (for example, see ISO 5145), the risk is to mix a flammable gas (subdivision 2 and/or 3) with a gas of subdivision 1 and/or 4.2 ISO 2015 All rights reservedBS EN ISO 14456:2016ISO 14456:2015(E)4.1.3 Acute
42、 toxicity, category IISubdivision 0: supporting human life;Subdivision 1: non-toxic LC50 rat 1h 0,5 % by volume (5 000 ppm);Subdivision 2: toxic; 0,02 % by volume (200 ppm) LC50 rat 1h 0,5 % by volume (5 000 ppm);Subdivision 3: very toxic LC50 rat 1h 0,02 % by volume (200 ppm).NOTE See ISO 10298 for
43、 more information.4.1.4 State of the gas (in the cylinder at 15 C), category IIIAll pressures for compressed gases are working pressures according to the definition given in ISO 10286.For liquefied gases, this is the developed pressure at 65 C (normally equal to the cylinder test pressure).Subdivisi
44、on 0: liquefied gas of 35 bar or less;Subdivision 1: liquefied gas at a pressure greater than 35 bar;Subdivision 2: liquid withdrawal liquefied gas (optional);Subdivision 3: dissolved gas;Subdivision 4: gas phase withdrawal at 35 bar or less;Subdivision 5: compressed gas between 35 bar and 250 bar (
45、Europe);Subdivision 6: compressed gas between 35 bar and 207 bar (North America);Subdivision 7: compressed gas above 207 bar (North America) or 250 bar (Europe).NOTE 1 Subdivisions 5 and 6 have been adopted as a result of a compromise between the European and the North American approach. The Europea
46、n preference for a limit of 250 bar reflects the current tendency towards higher pressure applications. The current North American practice requires a limit of 207 bar for which their pressure reducing valves are designed. This is the working pressure at the referenced temperature of 15 C. Therefore
47、, three pressure classes have been retained. Other jurisdictions might use different values.Either subdivision 5 or subdivision 6 shall be used, never both. The selection of either subdivision will determine the applicable pressure for subdivision 7.Subdivision 5 or 6: medium pressure range, each us
48、er being required to select one subdivision exclusively to determine the upper limit of the medium pressure range (i.e. 182 bar or 250 bar).Subdivision 7: high pressure range, the lower limit (182 bar or 250 bar) of which depends on the subdivision selected for the medium pressure range.After the in
49、troduction of subdivisions 5, 6, and 7, a number of pressure ranges have been (or are being) established to make the selection of the proper cylinder valve outlet connection (e.g. 500 bar, 800 bar, sub atmospheric pressure. These ranges have been chosen to protect downstream regulators and other ancillary equipment from over-pressurized conditions. Consequently, for the tables in 5.3, the third digit (S) used for all compressed gases is “5” to indicate that this is a compressed gas.NOTE 2 Subdivisions 8 and 9 have been alloca
