1、Petroleum products Gum content of fuels Jet evaporation methodBS EN ISO 6246:2017BSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 6246 April 2017 ICS 75.160.20 Supersedes EN ISO 6246:1997English Version Petroleu
2、m products - Gum content of fuels - Jet evaporation method (ISO 6246:2017) Produits ptroliers - Teneur en gommes des carburants - Mthode dvaporation au jet (ISO 6246:2017) Minerallerzeugnisse - Abdampfrckstand von Kraftstoffen - Aufblaseverfahren (ISO 6246:2017) This European Standard was approved b
3、y CEN on 9 February 2017. 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 stan
4、dards 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 n
5、otified 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,
6、 Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-
7、CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2017 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 6246:2017 ENational forewordThis British Standard is the UK implementation of EN ISO 6246:2017. It supersedes BS
8、EN ISO 6246:1998, which is withdrawn.The UK participation in its preparation was entrusted to Technical Committee PTI/13, Petroleum Testing and Terminology.A list of organizations represented on this committee can be obtained on request to its secretary.This publication does not purport to include a
9、ll the necessary provisions of a contract. Users are responsible for its correct application. The British Standards Institution 2017 Published by BSI Standards Limited 2017ISBN 978 0 580 91584 0ICS 75.160.20Compliance with a British Standard cannot confer immunity from legal obligations. This Britis
10、h Standard was published under the authority of the Standards Policy and Strategy Committee on 31 July 2017.Amendments/corrigenda issued since publicationDate Text affectedBRITISH STANDARDBS EN ISO 6246:2017EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 6246 April 2017 ICS 75.160.20 Supers
11、edes EN ISO 6246:1997English Version Petroleum products - Gum content of fuels - Jet evaporation method (ISO 6246:2017) Produits ptroliers - Teneur en gommes des carburants - Mthode dvaporation au jet (ISO 6246:2017) Minerallerzeugnisse - Abdampfrckstand von Kraftstoffen - Aufblaseverfahren (ISO 624
12、6:2017) This European Standard was approved by CEN on 9 February 2017. 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 bibliograph
13、ical 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 other language made by translation under the responsibilit
14、y 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, Denmark, Estonia, Finland, Former Yugoslav Republic of
15、 Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORM
16、ALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2017 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 6246:2017 EBS EN ISO 6246:2017EN ISO 6246:2017 (E) 3 European forewo
17、rd This document (EN ISO 6246:2017) has been prepared by Technical Committee ISO/TC 28 ” Petroleum and related products, fuels and lubricants from natural or synthetic sources” in collaboration with Technical Committee CEN/TC 19 “Gaseous and liquid fuels, lubricants and related products of petroleum
18、, synthetic and biological origin” the secretariat of which is held by NEN. 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 2017, and conflicting national standards shall be withdrawn at t
19、he latest by October 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 rights. This document supersedes EN ISO 6246:1997. According to the
20、 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, Germany, Greece, Hu
21、ngary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. Endorsement notice The text of ISO 6246:2017 has been approved by CEN as EN ISO 6246:2017 witho
22、ut any modification. ISO 6246:2017(E)Foreword ivIntroduction v1 Scope . 12 Normative references 13 Terms and definitions . 14 Principle 25 Reagents 26 Apparatus . 27 Assembly of air-jet apparatus . 38 Assembly of steam-jet apparatus 49 Calibration 510 Samples and sampling 511 Procedure. 512 Calculat
23、ion of gum content 713 Expression of results 813.1 Aviation fuels 813.2 Non-aviation fuels 813.3 All fuel types 814 Precision . 814.1 General . 814.2 Repeatability, r 814.3 Reproducibility, R .915 Test report . 9Bibliography .10 ISO 2017 All rights reserved iiiContents PageBS EN ISO 6246:2017ISO 624
24、6:2017(E)Foreword ivIntroduction v1 Scope . 12 Normative references 13 Terms and definitions . 14 Principle 25 Reagents 26 Apparatus . 27 Assembly of air-jet apparatus . 38 Assembly of steam-jet apparatus 49 Calibration 510 Samples and sampling 511 Procedure. 512 Calculation of gum content 713 Expre
25、ssion of results 813.1 Aviation fuels 813.2 Non-aviation fuels 813.3 All fuel types 814 Precision . 814.1 General . 814.2 Repeatability, r 814.3 Reproducibility, R .915 Test report . 9Bibliography .10 ISO 2017 All rights reserved iiiContents PageBS EN ISO 6246:2017ISO 6246:2017(E)ForewordISO (the In
26、ternational 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 h
27、as 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
28、 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 different approval criteria needed for the different types of ISO documents should be noted. This document was drafted in ac
29、cordance 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 the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. D
30、etails 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).Any trade name used in this document is information given for the convenience of users and does not constitute
31、 an endorsement.For an explanation on the voluntary nature of standards, the meaning of ISO specific terms and expressions related to conformity assessment, as well as information about ISOs adherence to the World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see the f
32、ollowing URL: www .iso .org/ iso/ foreword .html.This document was prepared by ISO/TC 28, Petroleum products and related products of synthetic or biological origin.This third edition cancels and replaces the second edition (ISO 6246:1995), which has been technically revised and aligned with ASTM D38
33、11.It also incorporates the Technical Corrigendum ISO 6246:1995/Cor 1:1998.The changes incorporate modern methods for temperature measurement and clarification of various measurement limits. Some process steps on the rounding of results are added. The precision in the former edition was based on ver
34、y old data using samples that did not contain components found in modern gasoline, such as oxygenated compounds and deposit control additives. New precision estimates from a 1997 joint ASTM/EI study3are included. Unwashed and washed gum results for non-aviation fuels can now be expressed to the near
35、est 0,5 mg/100 ml. This study and additional work in ASTM4and CEN in 20145have led to broadening of the scope to modern gasoline (blends).iv ISO 2017 All rights reservedBS EN ISO 6246:2017ISO 6246:2017(E)ForewordISO (the International Organization for Standardization) is a worldwide federation of na
36、tional 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. Intern
37、ational 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.The procedures used to develop this document and those inten
38、ded for its further maintenance are described in the ISO/IEC 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 (see www
39、.iso .org/ directives).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. Details of any patent rights identified during the development of the document
40、 will be in the Introduction and/or on the ISO list of patent declarations received (see www .iso .org/ patents).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 voluntary nature of standards, the
41、meaning of ISO specific terms and expressions related to conformity assessment, as well as information about ISOs adherence to the World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see the following URL: www .iso .org/ iso/ foreword .html.This document was prepared b
42、y ISO/TC 28, Petroleum products and related products of synthetic or biological origin.This third edition cancels and replaces the second edition (ISO 6246:1995), which has been technically revised and aligned with ASTM D3811.It also incorporates the Technical Corrigendum ISO 6246:1995/Cor 1:1998.Th
43、e changes incorporate modern methods for temperature measurement and clarification of various measurement limits. Some process steps on the rounding of results are added. The precision in the former edition was based on very old data using samples that did not contain components found in modern gaso
44、line, such as oxygenated compounds and deposit control additives. New precision estimates from a 1997 joint ASTM/EI study3are included. Unwashed and washed gum results for non-aviation fuels can now be expressed to the nearest 0,5 mg/100 ml. This study and additional work in ASTM4and CEN in 20145hav
45、e led to broadening of the scope to modern gasoline (blends).iv ISO 2017 All rights reserved ISO 6246:2017(E)IntroductionThe true significance of this test method for determining gum in motor gasoline is not firmly established. It has been proven that high gum content can cause induction-system depo
46、sits and sticking of intake valves, and in most cases, it can be assumed that low gum content will ensure absence of induction-system difficulties. The user should, however, realize that the test is not of itself correlative to induction-system deposits.The primary purpose of the test, as applied to
47、 motor gasoline, is the measurement of the oxidation products formed in the sample prior to or during the comparatively mild conditions of the test procedure. Since many kinds of motor gasoline are purposely blended with non-volatile oils or additives, the heptane extraction step is necessary to rem
48、ove these from the evaporation residue so that the deleterious material, gum, can be determined. With respect to aviation turbine fuels, large quantities of gum are indicative of contamination of fuel by higher boiling oils or particulate matter and generally reflect poor handling practices in distr
49、ibution downstream of the refinery. ISO 2017 All rights reserved vBS EN ISO 6246:2017BS EN ISO 6246:2017Petroleum products Gum content of fuels Jet evaporation methodWARNING The use of this document can involve hazardous materials, operations and equipment. This document does not purport to address all of the safety problems associated with its use. It is the responsibility of users of this document to take appropriate measures to ensure the safety and health of personnel prior to application of the document, and ful
