1、BSI Standards PublicationBS EN ISO 13686:2013Natural gas Qualitydesignation (ISO 13686:2013)BS EN ISO 13686:2013 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN ISO13686:2013. It supersedes BS EN ISO 13686:2005 which is withdrawn.The UK participation in its prep
2、aration was entrusted to TechnicalCommittee PTI/15, Natural Gas and Gas Analysis.A list of organizations represented on this committee 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 corr
3、ectapplication. The British Standards Institution 2013. Published by BSI StandardsLimited 2013ISBN 978 0 580 75118 9ICS 75.060Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of theStandards Policy and Strategy Co
4、mmittee on 31 July 2013.Amendments issued since publicationDate Text affectedEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 13686 June 2013 ICS 75.060 Supersedes EN ISO 13686:2005English Version Natural gas - Quality designation (ISO 13686:2013) Gaz naturel - Dsignation de la qualit (ISO 1
5、3686:2013) Erdgas - Bestimmung der Beschaffenheit (ISO 13686:2013) This European Standard was approved by CEN on 29 May 2013. 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 w
6、ithout 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 member. This European Standard exists in three official versions (English, French, German). A version in any oth
7、er 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. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic,
8、 Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMM
9、ITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2013 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 13686:2013: EBS EN ISO 13686:2013
10、EN ISO 13686:2013 (E) 3 Foreword This document (EN ISO 13686:2013) has been prepared by Technical Committee ISO/TC 193 “Natural gas“. 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 December 2013,
11、 and conflicting national standards shall be withdrawn at the latest by December 2013. 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.
12、 This document supersedes EN ISO 13686:2005. 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, Forme
13、r Yugoslav Republic of Macedonia, France, 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 13686:2
14、013 has been approved by CEN as EN ISO 13686:2013 without any modification. BS EN ISO 13686:2013ISO 13686:2013(E) ISO 2013 All rights reserved iiiContents PageForeword ivIntroduction v1 Scope . 12 Normative references 13 Terms and definitions . 24 Symbols, abbreviations and units . 64.1 Symbols . 64
15、.2 Abbreviations . 64.3 Subscripts 65 Quality designation parameters. 75.1 General . 75.2 Gas composition . 75.3 Gas properties 86 Sampling 9Annex A (informative) Introduction to informative annexes .10Annex B (informative) German Regulation Code of Practice DVGW G 260:2008, Extract of the relevant
16、parts for natural gases .18Annex C (informative) European Standard EN 437 “Test gases, test pressures and categories of appliances” 22Annex D (informative) Interchangeability AGA index method .25Annex E (informative) British Gas Hydrocarbon Equivalence Method 32Annex F (informative) Weaver index met
17、hod .37Annex G (informative) French method for determining gas interchangeability (Delbourg method) (guide for determining the interchangeability of second family gases) .39Annex H (informative) Spanish regulation code (Detail Protocol-01 Measurement) Extract of the relevant parts for natural gases
18、45Annex I (informative) Harmonization of gas property data for cross-border transportation 46Bibliography .48BS EN ISO 13686:2013ISO 13686:2013(E)ForewordISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of p
19、reparing 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,
20、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.The procedures used to develop this document and those intended for its further maintenance are described in the ISO/I
21、EC Directives, Part 1. In particular the different 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. www.iso.org/directivesAttention is drawn to the possibility that s
22、ome 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. 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 decla
23、rations received. www.iso.org/patentsAny trade name used in this document is information given for the convenience of users and does not constitute an endorsement.The committee responsible for this document is ISO/TC 193, Natural gas.This second edition cancels and replaces the first edition (ISO 13
24、686:1998), which has been technically revised.iv ISO 2013 All rights reservedBS EN ISO 13686:2013ISO 13686:2013(E)IntroductionThe need for an International Standard concerning the designation of natural gas quality was a basic reason for the establishment of ISO/TC 193 in 1989. Standardization of th
25、e designation of quality is specifically stated in the scope of ISO/TC 193. Natural gas, supplying 20 % of the worlds primary energy, is likely to increase its market share greatly. Yet there is currently no generally accepted definition of natural gas quality.To meet this need, it was decided that
26、a general statement of the parameters (i.e. components and properties) recommended should be established and that the resulting International Standard would not specify values of, or limits for, these parameters.Furthermore, it was decided that general-purpose natural gas transmitted to local distri
27、bution systems (LDS), referred to as “natural gas”, should be the first consideration. Thus, this International Standard was developed. Informative annexes are attached as examples of actual natural gas quality specifications that already exist.This International Standard does not impose any quality
28、 restrictions on raw gas transported via pipelines or gathering systems to processing or treating facilities.It should be understood that this International Standard covers natural gas at the pipeline level prior to any treatment by LDS for peakshaving purposes. This covers the vast majority of the
29、natural gas that is sold in international trade and transmitted for custody transfer to local distribution systems. ISO 2013 All rights reserved vBS EN ISO 13686:2013BS EN ISO 13686:2013Natural gas Quality designation1 ScopeThis International Standard specifies the parameters required to describe fi
30、nally processed and, where required, blended natural gas. Such gas is referred to subsequently in this text simply as “natural gas”.The main text of this International Standard contains a list of these parameters, their units and references to measurement standards. Informative annexes give examples
31、 of typical values for these parameters, with the main emphasis on health and safety.In defining the parameters governing composition, physical properties and trace constituents, consideration has also been given to existing natural gases to ensure their continuing viability.The question of intercha
32、ngeability is dealt with in Annex A (see Clause A.2).2 Normative referencesThe 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 edi
33、tion of the referenced document (including any amendments) applies.ISO 6326-1, Natural gas Determination of sulfur compounds Part 1: General introductionISO 6326-3, Natural gas Determination of sulfur compounds Part 3: Determination of hydrogen sulfide, mercaptan sulfur and carbonyl sulfide sulfur b
34、y potentiometryISO 6326-5, Natural gas Determination of sulfur compounds Part 5: Lingener combustion methodISO 6327, Gas analysis Determination of the water dew point of natural gas Cooled surface condensation hygrometersISO 6570, Natural gas Determination of potential hydrocarbon liquid content Gra
35、vimetric methodsISO 6974-1, Natural gas Determination of composition and associated uncertainty by gas chromatography Part 1: General guidelines and calculation of compositionISO 6974-2, Natural gas Determination of composition and associated uncertainty by gas chromatography Part 2: Uncertainty cal
36、culationsISO 6974-3, Natural gas Determination of composition with defined uncertainty by gas chromatography Part 3: Determination of hydrogen, helium, oxygen, nitrogen, carbon dioxide and hydrocarbons up to C8 using two packed columnsISO 6974-4, Natural gas Determination of composition with defined
37、 uncertainty by gas chromatography Part 4: Determination of nitrogen, carbon dioxide and C1 to C5 and C6+ hydrocarbons for a laboratory and on-line measuring system using two columnsISO 6974-5, Natural gas Determination of composition and associated uncertainty by gas chromatography Part 5: Isotherm
38、al method for nitrogen, carbon dioxide, C1 to C5 hydrocarbons and C6+ hydrocarbonsISO 6974-6, Natural gas Determination of composition and associated uncertainty by gas chromatography Part 6: Determination of helium, oxygen, nitrogen, carbon dioxide and C1 to C10 hydrocarbons using capaillary column
39、sISO 6975, Natural gas Extended analysis Gas-chromatographic methodINTERNATIONAL STANDARD ISO 13686:2013(E) ISO 2013 All rights reserved 1BS EN ISO 13686:2013ISO 13686:2013(E)ISO 6976:1995, Natural gas Calculation of calorific values, density, relative density and Wobbe index from compositionISO 697
40、8-1, Natural gas Determination of mercury Part 1: Sampling of mercury by chemisorption on iodineISO 6978-2, Natural gas Determination of mercury Part 2: Sampling of mercury by amalgamation on gold/platinum alloyISO 10101-1, Natural gas Determination of water by the Karl Fischer method Part 1: Introd
41、uctionISO 10101-2, Natural gas Determination of water by the Karl Fischer method Part 2: Titration procedureISO 10101-3, Natural gas Determination of water by the Karl Fischer method Part 3: Coulometric procedureISO 11541, Natural gas Determination of water content at high pressureISO 13443, Natural
42、 gas Standard reference conditionsISO 14532, Natural gas VocabularyISO 15970:2008, Natural gas Measurement of properties Volumetric properties: density, pressure, temperature and compression factorISO 15971:2008, Natural gas Measurement of properties Calorific value and Wobbe indexISO 18453, Natural
43、 gas Correlation between water content and water dew pointISO 19739, Natural gas Determination of sulfur compounds using gas chromatographyISO 23874, Natural gas Gas chromatographic requirements for hydrocarbon dewpoint calculation3 Terms and definitionsFor the purposes of this document, the terms a
44、nd definitions given in ISO 14532 and the following apply.3.1natural gasgaseous fuel obtained from underground sources and consisting of a complex mixture of hydrocarbons, primarily methane, but generally also including ethane, propane and higher hydrocarbons in much smaller amountsNote 1 to entry:
45、It also includes some inert gases, such as nitrogen and carbon dioxide, plus minor amounts of trace constituents.Note 2 to entry: Natural gas remains in the gaseous state under the temperature and pressure conditions normally found in service. It is produced by processing raw gas or from liquefied n
46、atural gas and, if required, blended to give a gas suitable for direct use. As pipeline quality natural gas, it can then be transmitted within a local distribution system, within a country, or across national borders. It is subject to contractual requirements between buyer and seller, and in some ca
47、ses to national or state requirements as to quality (see Clause A.1).3.2liquefied natural gasnatural gas which, after processing, has been liquefied for storage or transportation purposesNote 1 to entry: Liquefied natural gas is revaporized and introduced into pipelines for transmission and distribu
48、tion as natural gas.3.3substitute natural gasmanufactured or blended gas with properties which make it interchangeable with natural gasNote 1 to entry: Substitute natural gas is sometimes called synthetic natural gas.2 ISO 2013 All rights reservedBS EN ISO 13686:2013ISO 13686:2013(E)Note 2 to entry:
49、 This also includes gases manufactured by thermal process from biomass.3.4raw gasunprocessed gas taken from well heads through gathering lines to processing facilities3.5local distribution systemgas mains and services which supply natural gas directly to consumers3.6gas qualityattribute of natural gas by its composition (major components, minor components and trace components) and its physical properties (calorific value, Wobbe index, compression factor, relative den
