07-30172881-DC.pdf
a Date: 19 October 2007 Origin: International Latest date for receipt of comments: 31 January 2008 Project no.: 2007/02789 Responsible committee: PTI/13 Petroleum testing and terminology Interested committees: Title: Draft BS ISO 10307-2 Petroleum products Total sediment in residual fuel oils Part 2: Determination using standard procedures for ageing Supersession information: If this document is published as a standard, the UK implementation of it will supersede BS2000-390 : 1994 (R04) and partially supersede. NONE If you are aware of a current national standard which may be affected, please notify the secretary (contact details below). WARNING: THIS IS A DRAFT AND MUST NOT BE REGARDED OR USED AS A BRITISH STANDARD. THIS DRAFT IS NOT CURRENT BEYOND 31 January 2008. This draft is issued to allow comments from interested parties; all comments will be given consideration prior to publication. No acknowledgement will normally be sent. See overleaf for information on commenting. 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Direct tel: 020 7467 7130 Responsible Committee Secretary: Ms S Quintanilla (BSI) 61 New Cavendish Street;London;W1G 7AR;GB E-mail: sonia.quintanillaenergyinst.org.uk Draft for Public Comment Head Office 389 Chiswick High Road London W4 4AL Telephone: +44(0)20 8996 9000 Fax: +44(0)20 8996 7001 Form 36 Version 7.0 DPC: 07/30172881 DC Licensed Copy: London South Bank University, London South Bank University, Fri Nov 16 07:51:55 GMT+00:00 2007, Uncontrolled Copy, (c) BSI b Introduction This draft standard is based on international discussions in which the UK has taken an active part. Your comments on this draft are invited and will assist in the preparation of the consequent standard. Comments submitted will be reviewed by the relevant BSI committee before sending the consensus UK vote and comments to the international secretariat, which will then decide appropriate action on the draft and the comments received. If no comments are received to the contrary, then the UK will approve this draft. If the international standard is approved, it is possible the text will be published as an identical British Standard. UK Vote Please indicate whether you consider the UK should submit a negative (with reasons) or positive vote on this draft. Submission The guidance given below is intended to ensure that all comments receive efficient and appropriate attention by the responsible BSI committee. Annotated drafts are not acceptable and will be rejected. All comments must be submitted, preferably electronically, to the Responsible Committee Secretary at the address given on the front cover. Comments should be compatible with Version 6.0 or Version 97 of Microsoft® Word for Windows, if possible; otherwise comments in ASCII text format are acceptable. Any comments not submitted electronically should still adhere to these format requirements. 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Microsoft and MS-DOS are registered trademarks, and Windows is a trademark of Microsoft Corporation. Licensed Copy: London South Bank University, London South Bank University, Fri Nov 16 07:51:55 GMT+00:00 2007, Uncontrolled Copy, (c) BSI THIS DOCUMENT IS A DRAFT CIRCULATED FOR COMMENT AND APPROVAL. IT IS THEREFORE SUBJECT TO CHANGE AND MAY NOT BE REFERRED TO AS AN INTERNATIONAL STANDARD UNTIL PUBLISHED AS SUCH. IN ADDITION TO THEIR EVALUATION AS BEING ACCEPTABLE FOR INDUSTRIAL, TECHNOLOGICAL, COMMERCIAL AND USER PURPOSES, DRAFT INTERNATIONAL STANDARDS MAY ON OCCASION HAVE TO BE CONSIDERED IN THE LIGHT OF THEIR POTENTIAL TO BECOME STANDARDS TO WHICH REFERENCE MAY BE MADE IN NATIONAL REGULATIONS. RECIPIENTS OF THIS DRAFT ARE INVITED TO SUBMIT, WITH THEIR COMMENTS, NOTIFICATION OF ANY RELEVANT PATENT RIGHTS OF WHICH THEY ARE AWARE AND TO PROVIDE SUPPORTING DOCUMENTATION. DRAFT INTERNATIONAL STANDARD ISO/DIS 10307-2 © International Organization for Standardization, 2007 INTERNATIONAL ORGANIZATION FOR STANDARDIZATION ORGANISATION INTERNATIONALE DE NORMALISATION ISO/TC 28 Voting begins on: 2007-10-19 Secretariat: ANSI Voting terminates on: 2008-03-19 Petroleum products Total sediment in residual fuel oils Part 2: Determination using standard procedures for ageing Produits pétroliers Insolubles existants dans les fuel-oils résiduels Partie 2: Détermination à l'aide de méthodes de vieillissement de référence Revision of first edition (ISO 10307-2:1993) ICS 75.160.20 In accordance with the provisions of Council Resolution 15/1993 this document is circulated in the English language only. Conformément aux dispositions de la Résolution du Conseil 15/1993, ce document est distribué en version anglaise seulement. To expedite distribution, this document is circulated as received from the committee secretariat. 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Licensed Copy: London South Bank University, London South Bank University, Fri Nov 16 07:51:55 GMT+00:00 2007, Uncontrolled Copy, (c) BSI ISO/DIS 10307-2 © ISO 2007 All rights reserved iii Contents Page Foreword.iv Introductionv 1 Scope.1 2 Normative references .1 3 Definitions .1 4 Principle.2 4.1 General 2 4.2 Thermal ageing (Procedure A).2 4.3 Chemical ageing (Procedure B).2 5 Apparatus2 6 Reagent3 7 Sampling and sample preparation.3 8 Ageing procedures .4 8.1 General 4 8.2 Procedure A Sediment determination using thermal ageing4 8.3 Procedure B Sediment determination using chemical ageing4 9 Expression of results5 10 Precision5 11 Test report.5 Licensed Copy: London South Bank University, London South Bank University, Fri Nov 16 07:51:55 GMT+00:00 2007, Uncontrolled Copy, (c) BSI ISO/DIS 10307-2 iv © ISO 2007 All rights reserved Foreword ISO (the International 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 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. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. 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. ISO 10307-2 was prepared by Technical Committee ISO/TC 28, Petroleum products and lubricants. This second edition cancels and replaces the first edition (ISO 10307-2:1993) which has been technically revised. ISO 10307 consists of the following parts, under the general title Petroleum products Total sediment in residual fuel oils: Part 1: Determination by hot filtration Part 2: Determination using standard procedures for ageing Licensed Copy: London South Bank University, London South Bank University, Fri Nov 16 07:51:55 GMT+00:00 2007, Uncontrolled Copy, (c) BSI ISO/DIS 10307-2 © ISO 2007 All rights reserved v Introduction Experience has shown that the precipitation of asphaltenes form a residual fuel oil in the form of sediment may occur during storage and handling. Such sediment may cause severe difficulties, and in extreme cases can render the fuel unfit for use. Once out of solution, it is extremely difficult to repeptize the asphaltenes into their original state. Fuel pre-treatment designed to accelerate the ageing/sedimentation process, followed by filtration, is a well- established technique for testing whether sediment from residual fuel oils will precipitate during storage and handling. This could involve thermal ageing (heating to a specified temperature for a specified time) or chemical ageing (addition of a specified amount of a normal alkane to test whether the balance between the required aromaticity of the asphaltenes and the available aromaticity of the oil phase is disturbed to the extent that asphaltene precipitation occurs). A means of predicting the presence of a reserve of stability to sedimentation in residual fuel oil during storage and handling is thus a useful tool in the petroleum products industry. Licensed Copy: London South Bank University, London South Bank University, Fri Nov 16 07:51:55 GMT+00:00 2007, Uncontrolled Copy, (c) BSI Licensed Copy: London South Bank University, London South Bank University, Fri Nov 16 07:51:55 GMT+00:00 2007, Uncontrolled Copy, (c) BSI DRAFT INTERNATIONAL STANDARD ISO/DIS 10307-2 © ISO 2007 All rights reserved 1 Petroleum products Total sediment in residual fuel oils Part 2: Determination using standard procedures for ageing WARNING The use of this International Standard may involve hazardous materials, operations and equipment. This International Standard does not purport to address all of the safety problems associated with its use. It is the responsibility of the user of this International Standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. 1 Scope This part of ISO 10307 specifies two procedures for accelerated ageing of residual fuel oils which, combined with the hot filtration method specified in 10307-1, permit the prediction of fuel oil stability to sedimentation during storage and handling. NOTE For the purposes of this International Standard, the terms “% (m/m)“ and “% (V/V)“ are used to represent mass and volume fractions of a material, respectively. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 1773:1997, Laboratory glassware Boiling flasks (narrow-necked) ISO 10307-1: 1) , Petroleum products Total sediment in residual fuel oils Part 1: Determination by hot filtration 3 Definitions For the purposes of this part of ISO 10307, the following definitions apply. 3.1 potential total sediment total sediment, determined by ISO 10307-1, after ageing a sample of residual fuel for 24 h at 100 °C under prescribed conditions 3.2 accelerated total sediment total sediment, determined by ISO 10307-2, after dilution of a sample of residual fuel with hexadecane in the ratio of 1 ml per 10 g of sample under carefully controlled conditions, followed by storage for 1 h at 100 °C 1) Internat
