《【BS英国标准word原稿】BS EN 12662 Liquid petroleum productsDetermination off contamination in m.doc》由会员分享，可在线阅读，更多相关《【BS英国标准word原稿】BS EN 12662 Liquid petroleum productsDetermination off contamination in m.doc（16页珍藏版）》请在三一办公上搜索。
1、 ，如果你需要更多标准可以到 如果你购买的文档存在缺页、字迹模糊、乱码等情况，请大家通过论坛消息与我联系。BRITISH STANDARDBS EN12662:2008 BS 2000-440: 2008Liquid petroleum products Determination of contamination in middle distillatesICS 75.160.20 BS EN 12662:2008National forewordThis British Standard is the UK implementation of EN 12662:2008. It super
2、sedes BS EN 12662:1998/BS 2000-440:1999 which is withdrawn.The UK participation in its preparation was entrusted to Technical CommitteePTI/13, Petroleum testing and terminology.A list of organizations represented on this committee can be obtained on request to its secretary.Energy Institute, under t
3、he brand of IP, publishes and sells all Parts of BS 2000, and all BS EN petroleum test methods that would be Part of BS 2000, both in its annual publication “Standard methods for analysis and testing of petroleum and related products and British Standard 2000 Parts” andindividually.Further informati
4、on is available from: Energy Institute, 61 New Cavendish Street, London W1G 7AR. Tel: 020 7467 7100. Fax: 020 7255 1472.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application.Compliance with a British Standard cannot
5、 confer immunity from legal obligations.This British Standard was published under the authority ofStrategy Committee on 30 May 2008 BSI and Energy Institute 2008ISBN 978 0 580 54624 2Amendments/corrigenda issued since publicationDate Comments W 7 7 $ * W W D w BS EN 12662:2008EN 12662:2008 (E)Conten
6、ts PageForeword.31 Scope .42 Normative references .43 Terms and definitions .44 Principle .45 Reagents and materials .46 Apparatus .57 Preparation of sample containers and apparatus .68 Sampling .79 Preparation of the sample.710 Preparation of the equipment .810.1 Preparation of the filtering appara
7、tus.810.2 Preparation of the filter .811 Procedure .811.1 Liquid petroleum products with a kinematic viscosity not exceeding 8 mm 2/s at 20 C, or5 mm2/s at 40 C .811.2 Liquid petroleum products with a kinematic viscosity exceeding 8 mm2/s at 20 C, or5 mm2/s at 40 C .912 Calculation.913 Expression of
8、 results .914 Precision .914.1 Repeatability.914.2 Reproducibility.1015 Test report .10Bibliography .112 BS EN 12662:2008EN 12662:2008 (E)ForewordThis document (EN 12662:2008) has been prepared by Technical Committee CEN/TC 19 “Gaseous and liquid fuels, lubricants and related products of petroleum,
9、synthetic and biological origin”, the secretariat of which isheld 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 September 2008, and conflicting national standards shall be withdrawn at th
10、e latest by September 2008.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 12662:1998.The major update of t
11、his document in comparison with the former edition is that filtration procedure has been updated in order to improve precision and scope. At this stage an interlaboratory study with field samples, following a study with artificial samples, is pending and therefore the repeatability and reproducibili
12、ty have not yet been fully established, also because of some indications towards problems when the test method is applied to 100 % (V/V) FAME. CEN intends to revise this method when the results of the work on FAME (also at levels of 7 % and 10 %) will be known.According to the CEN/CENELEC Internal R
13、egulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, N
14、etherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom.3BS EN 12662:2008EN 12662:2008 (E)1 ScopeThis European Standard specifies a method for determining contamination as the content of undissolved substances in middle distillates contain
15、ing up to 5 % (V/V) fatty acid methyl esters (FAME) and in 100 % (V/V) FAME. This method can be applied for contaminant content from 6 mg/kg to 30 mg/kg.NOTE 1 Excessive contamination in a fuel system can give rise to premature blocking of filters and / or hardware failure, and is therefore undesira
16、ble.This standard applies to liquid petroleum products having a kinematic viscosity not exceeding 8 mm2/s at20 C, or 5 mm2/s at 40 C, e.g. diesel fuel as specified in EN 590 1 or light fuel oils.Although the test method precision has not been defined, the method described may also be used for blends
17、 containing more than 5% (V/V) FAME and for petroleum products having a viscosity exceeding the above.NOTE 2 For the purposes of this European Standard, the term % (V/V) is used to represent the volume fraction.WARNING Use of this standard may involve hazardous materials, operations and equipment. T
18、his standard does not purport to address all of the safety problems associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and to determine the applicability of regulatory limitations prior to use.2 Normative referencesThe
19、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.EN 14275, Automotive fuels Assessment of petrol and di
20、esel fuel quality - Sampling from retail site pumps and commercial site fuel dispensersEN ISO 3170, Petroleum liquids Manual sampling (ISO 3170:2004)EN ISO 3171, Petroleum liquids - Automatic pipeline sampling (ISO 3171:1988)ISO 3819 Laboratory glassware - Beakers3 Terms and definitionsFor the purpo
21、ses of this standard, the following term and definition applies.contaminationundissolved substances retained on a filter after filtration under test conditions4 PrincipleA sample portion of 800 ml 25 ml is weighed and filtered under vacuum through a pre-weighed filter. The filter with the residue is
22、 washed, dried and weighed. Contamination is calculated from the difference in mass of the filter and expressed relative to the sample mass as mg/kg.5 Reagents and materials5.1 Heptane, with a purity no less than 99,0 % (V/V), filtered using a filter (membrane) with a mean pore size of 0,45 m.4BS EN
23、 12662:2008EN 12662:2008 (E)NOTE Heptane used as a reference fuel in EN ISO 5164 is suitable.5.2 Propan-2-ol, with a purity no less than 99,0 % (V/V).NOTE Propan-2-ol is used to dry glassware and the sample container after rinsing with water.6 ApparatusAll glassware and sampling vessels to be carefu
24、lly cleaned as described in Clause 7. Usual laboratory apparatus and glassware, together with the following:6.1 Filter apparatus, suitable for a filter (6.2), as shown in Figure 1.6.2 Filters, of high retention glass fibre type, 47 mm or 50 mm in diameter and with a 0,7 m mean pore size.6.3 Beakers,
25、 tall form 1 l, conforming with ISO 3819 or an equivalent national standard.6.4 Oven, of the static type (without fan assisted circulation), explosion-proof, capable of heating to110 C 5 C.6.5 Desiccator, containing freshly activated silica gel (or equivalent desiccant) with a moisture content indic
26、ator.6.6 Glass Petri dishes with covers, greater than 50 mm in diameter.6.7 Analytical balance, capable of weighing to the nearest 0,1 mg.6.8 Forceps, with round shaped tips for transferring the filter from the filter holder to the Petri dish and from the latter on to the dish of the analytical bala
27、nce.6.9 Water bath or oven, capable of maintaining a temperature of 40 C 1 C.6.10 Wash bottle fitted with spray nozzle, suitable for use with heptane.6.11 Top load balance, capable of weighing 1 500 g to the nearest 0,1 g.6.12 Vacuum source, capable of maintaining an absolute pressure of 2 kPa to 5 kPa.6.13 Suitable clean sample containers and sampling vessels.5BS EN 12662:2008EN 12662:2008 (E)Key1) Vacuum tubing2) Funnel3) Clamp4) Wire to ground5) Receiving flask6) Safety flask7) Laboratory ground (recommended)8) To vacuum pump
