1、March 2014 Translation by DIN-Sprachendienst.English price group 10No part of this translation may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).ICS
2、75.060!%,?“2099528www.din.deDDIN EN ISO 13734Natural gas Organic components used as odorants Requirements and test methods (ISO 13734:2013);English version EN ISO 13734:2013,English translation of DIN EN ISO 13734:2014-03Erdgas Organische Verbindungen zur Verwendung als Odoriermittel Anforderungen u
3、nd Prfverfahren (ISO 13734:2013);Englische Fassung EN ISO 13734:2013,Englische bersetzung von DIN EN ISO 13734:2014-03Gaz naturel Composs organiques utiliss comme odorisants Exigences et mthodes dessai (ISO 13734:2013);Version anglaise EN ISO 13734:2013,Traduction anglaise de DIN EN ISO 13734:2014-0
4、3SupersedesDIN EN ISO 13734:2000-09www.beuth.deDocument comprises 18 pagesIn case of doubt, the German-language original shall be considered authoritative.03.14 DIN EN ISO 13734:2014-03 2 A comma is used as the decimal marker. National foreword The text of ISO 13734:2013 has been prepared by Technic
5、al Committee ISO/TC 193 “Natural gas” and has been adopted by CEN as EN ISO 13734:2013 without any modification. The responsible German body involved in its preparation was the Normenausschuss Gastechnik (Gas Technology Standards Committee). This standard specifies requirements and test methods for
6、organic compounds suitable for odorization of natural gas. It is intended to include this standard in the body of technical rules and standards for gas issued by the DVGW Deutscher Verein des Gas- und Wasserfaches e.V. (German Technical and Scientific Association for Gas and Water). The DIN Standard
7、s corresponding to the International Standards referred to in Clause 2 of this standard are as follows: ISO 4256 DIN EN ISO 4256 ISO 14532 DIN EN ISO 14532 The Normenausschuss Gastechnik brings attention to the fact that complying with the requirements of this standard laid down in 4.2 as regards th
8、e composition of odorants can involve patents. Lists of patents relevant to European Standards are available online at CEN (http:/www.cen.eu/cen/WorkArea/IPR/Pages/default.aspx) or CENELEC (http:/www.cenelec.eu/membersandexperts/toolsandapplications/index.html). Users are encouraged to use these lis
9、ts to gain information on the current patents that are relevant to them. Amendments This standard differs from DIN EN ISO 13734:2000-09 as follows: a) the standard refers not only to organic sulfur compounds, but covers also non-sulfurous compounds used as odorants for natural gas; b) the title of t
10、he standard has been changed correspondingly; c) Clause 3 “Terms and definitions” has been extended to include some definitions of EN ISO 14532; d) Subclause 4.1 has been extended to include an additional passage relating to non-sulfurous odorants; e) Subclauses 6.5 and 6.6 have been shortened by pr
11、oviding references to ISO Standards; f) Annex A.4 “Properties of non-sulfurous odorant” has been added. Previous editions DIN EN ISO 13734: 2000-09 DIN EN ISO 13734:2014-03 3 National Annex NA (informative) Bibliography DIN EN ISO 4256, Liquefied petroleum gases Determination of gauge vapour pressur
12、e LPG method DIN EN ISO 14532, Natural gas Vocabulary DIN EN ISO 13734:2014-03 4 This page is intentionally blank EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 13734 November 2013 ICS 75.060 Supersedes EN ISO 13734:2000English Version Natural gas - Organic components used as odorants - Re
13、quirements and test methods (ISO 13734:2013) Gaz naturel - Composs organiques utiliss comme odorisants - Exigences et mthodes dessai(ISO 13734:2013) Erdgas - Organische Verbindungen zur Verwendung als Odoriermittel - Anforderungen und Prfverfahren(ISO 13734:2013) This European Standard was approved
14、by CEN on 12 October 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 without any alteration. Up-to-date lists and bibliographical references concerning such national sta
15、ndards 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 other language made by translation under the responsibility of a CEN member into its own language and
16、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, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary
17、, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC
18、 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 13734:2013 EContents PageForeword 3Introduction 41 Scope . 52 Normative references 53 Terms and definitions . 54 Require
19、ments 64.1 Recommendations of an effective odorant .64.2 Composition of odorants 74.3 Cloud point . 74.4 Phase properties 74.5 Evaporation residue . 74.6 Insoluble matter 74.7 Solubility in water 75 Handling and transport . 86 Tests . 86.1 Test sample .86.2 Test documentation 86.3 Determination of c
20、omposition 86.4 Determination of cloud point .86.5 Determination of phase properties .86.6 Determination of evaporation residue .86.7 Visual examination for solids or suspended matter . 96.8 Determination of solubility in water 97 Labelling and documentation . 97.1 Labelling . 97.2 Documentation 10A
21、nnex A (informative) Properties of odorants 11DIN EN ISO 13734:2014-03 EN ISO 13734:2013 (E) 2 Foreword This document (EN ISO 13734:2013) 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
22、of an identical text or by endorsement, at the latest by May 2014, and conflicting national standards shall be withdrawn at the latest by May 2014. 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 he
23、ld responsible for identifying any or all such patent rights. This document supersedes EN ISO 13734:2000. 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, Croa
24、tia, 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, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and t
25、he United Kingdom. Endorsement notice The text of ISO 13734:2013 has been approved by CEN as EN ISO 13734:2013 without any modification. DIN EN ISO 13734:2014-03 EN ISO 13734:2013 (E) 3 IntroductionProcessed natural gas received from suppliers normally has little or no odour. For safety reasons, nat
26、ural gas is therefore odorized to permit the detection by smell of the gas at very low concentrations in air.NOTE It is a common requirement that natural gas in air be readily detectable by smell at a concentration of 20 % of the lower flammability limit (LFL). The LFL of natural gas is normally tak
27、en as the volume fraction in air of 4 % to 5 %.DIN EN ISO 13734:2014-03 EN ISO 13734:2013 (E) 4 1 ScopeThis International Standard specifies requirements and test methods for organic compounds suitable for odorization of natural gas and natural gas substitutes for public gas supply, hereafter referr
28、ed to as odorants.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 edition of the referenced document (in
29、cluding any amendments) applies.ISO 3007:2005, Petroleum products and crude petroleum Determination of vapour pressure Reid methodISO 3015:1992, Petroleum products Determination of cloud pointISO 4256:1996, Liquefied petroleum gases Determination of gauge vapour pressure LPG methodISO 4626:1980, Vol
30、atile organic liquids Determination of boiling range of organic solvents used as raw materialsISO 14532, Natural gas Vocabulary3 Terms and definitionsFor the purposes of this document, the terms and definitions given in ISO 14532 (in particular 3.1 to 3.4) and the following apply.3.1odorizationaddit
31、ion of odorants, normally intensely smelling organic sulfur compounds, to natural gas (normally odourless) to allow the recognition of gas leaks by smell at very low concentration (before a build up to a dangerous gas in air concentration can occur)Note 1 to entry: Adapted from ISO 14532.Note 2 to e
32、ntry: Natural gas is normally odourless. The addition of an odorant to the gas fed into the distribution system for safety reasons permits the detection of the gas by smell at very low concentrations.3.2odorantintensely smelling organic chemical or combination of chemicals added to natural gas at lo
33、w concentration and capable of imparting a characteristic and distinctive (usually disagreeable) warning odour so gas leaks can be detected at concentrations below their lower flammability limitSOURCE: ISO 14532DIN EN ISO 13734:2014-03 EN ISO 13734:2013 (E) 5 3.3odour charactertype of sensation of a
34、n odourSOURCE: ISO 14532Note 1 to entry: Odour character is a qualitative parameter.3.4odour intensitystrength of odour perceptionSOURCE: ISO 145323.5threshold concentrationconcentration at which an individual has a probability of 0,5 in perceiving the odourNote 1 to entry: To detect an odour does n
35、ot imply that this odour may be identified.3.6odour intensity curverelationship between odour intensity and odorant concentration in airNote 1 to entry: The odour intensity can only be determined by the human olfactory organ.3.7diluentorganic liquid, normally consisting of paraffinic hydrocarbons, u
36、sed to reduce the concentration of an odorant to a suitable level at which the solution may be injected into the natural gas3.8cloud pointtemperature at which a cloud of crystals first appears in a liquid when it is cooled under specified conditions4 Requirements4.1 Recommendations of an effective o
37、dorantGas odorants should meet the following general recommendations:a) The gas odorant should have a strong odour at very low concentration.b) The odour character of the odorant needs to be unpleasant, distinctive and not confusable with other frequently occurring odours so that it is unmistakably
38、associated with a gas leak.c) The odour character should be the same at different dilutions of natural gas with air.d) The odorant should be sufficiently stable during storage and when mixed with natural gas.e) The volatility of the odorant should be high enough so that the odorant does not apprecia
39、bly condense under the conditions (temperature and pressure) existing in the pipeline system.f) Evaporation of the gas odorant should not appreciably leave residues.g) The odorant should be useable at low temperatures, when required.h) The combustion of the odorant should not leave significant solid
40、 deposits.i) The addition of the odorant to natural gas should not make the resulting gas harmful.DIN EN ISO 13734:2014-03 EN ISO 13734:2013 (E) 6 These general recommendations should be assessed against the specific conditions of use of the odorant (conditions of the natural gas transportation grid
41、, odorization installation, type of odorant, composition of the gas).Experience in many countries has shown that these basic requirements are best met by organic sulfur compounds - sulfides (thioethers) and mercaptans (thiols) - with boiling points below 130 C. Since primary mercaptans are easily ox
42、idized to disulfides which have a much lower odour intensity, mercaptan-based odorants need to predominantly contain secondary and tertiary mercaptans.While it has been established that the above sulfur compounds fulfil the basic requirements listed above under a) to i), other, non-sulfurous odorant
43、s have been developed and are available.4.2 Composition of odorantsThe mass fraction of the declared chemical product in the undiluted odorant shall be at least 95 %. The composition of the odorant, and where applicable the dilution range, shall be declared by the producer or distributor. It shall b
44、e stable over the maximum shelf time as declared by the manufacturer.In sulfur containing odorants, the mass fraction of sulfides (thioethers) or secondary or tertiary mercaptans (thiols) shall be at least 80 %. Primary mercaptans are more easily oxidized than secondary or tertiary mercaptans.For no
45、n-sulfurous odorants based on acrylates, care shall be taken e.g. by use of an appropriate additive to avoid polymerisation.4.3 Cloud pointThe cloud point of the undried odorant, to be determined in accordance with 6.4, shall be below -30 C.4.4 Phase properties4.4.1 Boiling pointThe boiling point of
46、 the components of the odorants and diluent, measured in accordance with 6.5, shall not be higher than 130 C.4.4.2 Vapour pressure curveThe vapour pressure curve of the odorant and eventually the diluent shall be given. It shall be determined in accordance with 6.5.4.5 Evaporation residueThe mass fr
47、action of the evaporation residue, to be determined in accordance with 6.6, shall be less than 0,2 %.4.6 Insoluble matterOdorants shall not contain any visible insoluble matter, to be determined in accordance with 6.7.4.7 Solubility in waterWhen the odorant is added to water in the way specified in 6.8, less than 2 % by volume of the odorant shall be soluble.DIN EN ISO 13734:2014-03 EN ISO 13734:2013 (E) 7
