1、CAN/CGSB-3.0 No. 60.32-2013Methods of testing petroleum and associated products Standard test method for determination of the corrosiveness to silver of gasoline, middle distillate fuels and oxygenated fuels using silver wool: Rapid ultrasonic methodICS 77.060National Standard of CanadaThe CANADIAN
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22、472 by fax 819-956-5740 by mail CGSB Sales Centre Gatineau, Canada K1A 1G6 in person Place du Portage Phase III, 6B1 11 Laurier Street Gatineau, Quebec by email ncr.cgsb-ongctpsgc-pwgsc.gc.ca on the Web www.tpsgc-pwgsc.gc.ca/ongc-cgsb NATIONAL STANDARD OF CANADA CAN/CGSB-3.0 No. 60.32-2013Methods of
23、 Testing Petroleum and Associated ProductsStandard Test Method for Determination of the Corrosiveness to Silver of Gasoline, Middle Distillate Fuels and Oxygenated Fuels using Silver Wool: Rapid Ultrasonic MethodNATIONAL STANDARD OF CANADA CAN/CGSB-3.14-2006Prepared by the Approved by the Canadian G
24、eneral Standards BoardPublished December 2013 by the Canadian General Standards Board Gatineau, Canada K1A 1G6 HER MAJESTY THE QUEEN IN RIGHT OF CANADA, as represented by the Minister of Public Works and Government Services, the Minister responsible for the Canadian General Standards Board (2013). N
25、o part of this publication may be reproduced in any form without the prior permission of the publisher.CETTE NORME NATIONALE DU CANADA EST DISPONIBLE EN VERSIONSFRANAISE ET ANGLAISE.CAN/CGSB-3.0 No. 60.32-2013CANADIAN GENERAL STANDARDS BOARDCommittee on Petroleum Test Methods(Voting membership at da
26、te of approval)ChairWispinski, D1Alberta Innovates Technology FuturesGeneral Interest CategoryMacLean, G. Intertek Commodities DivisionMnard, L. Advanced Engine Technology Ltd.Satsangi, T. Canadian Coast GuardSnow, M. PerkinElmerProducer CategoryBoroniec, J. Suncor Energy Products PartnershipCastro,
27、 R. Shell Canada Ltd.Gupta, R. Husky EnergyLachine, J. Imperial Oil Ltd.Pierceall, R. Archer Daniels MidlandPorter, S. Canadian Renewable Fuels Association Regulator CategoryTardif, M. Environment CanadaUser CategoryHanganu, A. OTI Canada GroupJacula, T. Maxxam Analytics Inc.Levesque, P. SGS Canada
28、Inc.MacDonald, P. Natural Resources CanadaMoser, P. Saskatchewan Research CouncilOwega, S. National Defence (QETE)Vidian-Jones, C. Certispec Services Inc.Secretary (non-voting)Newton, J. Canadian General Standards Board1UserAcknowledgment is made for the translation of this National Standard of Cana
29、da by the Translation Bureau of Public Works and Government Services Canada.CGSB 2013 All rights reservedCAN/CGSB-3.0No. 60.32-2013iCGSB 2013 All rights reservedPageContents1 Scope . 12 Normative references . 13 Summary of test method . 14 Terms and definitions 25 Significance and use 26 Apparatus 2
30、7 Materials 48 Procedure 58.1 Sampling of fuel 58.2 Testing . 59 Calculation 99.1 Interpretation 910 Report 1211 Precision and bias 12Annex A (normative) Special care and handling of silver wool . 13CAN/CGSB-3.0No. 60.32-20131CGSB 2013 All rights reservedMethods of testing petroleum and associated p
31、roductsStandard test method for the determination of corrosiveness to silver of gasoline, middle distillate fuels and oxygenated fuels using silver wool: Rapid ultrasonic method1 ScopeThis method provides a means of determining the degree of corrosiveness of gasoline and middle distillate fuels to s
32、ilver or silver alloys used in fuel system components.This method also applies to oxygenated gasoline and diesel blends, intermediate streams or blending components such as alkylate, reformate, and isomerate.The testing and evaluation of a product against this method may require the use of materials
33、 and/or equipment that could be hazardous. This document does not purport to address all the safety aspects associated with its use. Anyone using this method has the responsibility to consult the appropriate authorities and to establish appropriate health and safety practices in conjunction with any
34、 applicable regulatory requirements prior to its use.2 Normative referencesThe following documents contain provisions that, through reference in this text, constitute provisions of this method. The referenced documents may be obtained from the sources noted below.An undated reference is to the lates
35、t edition or revision of the reference or document in question, unless otherwise specified by the authority applying this method. A dated reference is to the specified revision or edition of the reference or document in question. However, parties to agreements based on this method are encouraged to
36、investigate the possibility of applying the most recent editions of the normative documents indicated below. 2.1 ASTM InternationalD5191 Standard Test Method for Vapor Pressure of Petroleum Products.2.1.1 SourceThe above may be obtained from ASTM International, 100 Barr Harbor Drive, West Conshohock
37、en, PA 19428-2959, U.S.A., telephone 610-832-9585, fax 610-832-9555, Web site www.astm.org, or from IHS Global Canada Ltd., 200-1331 MacLeod Trail SE, Calgary, T2G 0K3, telephone 613-237-4250 or 1-800-267-8220, fax 613-237-4251, Web site .2.2 United States Environment Protection Agency9240.0-05A EP
38、A540/R-93/051 PB93-63316 Specifications and guidance for contaminant-free sample containers.2.2.1 SourceThe above may be obtained from United States Environment Protection Agency, Office of Solid Waste and Emergency Response, 1200 Pennsylvania Avenue, N, W, Washington, DC 20460. Telephone 202-272-01
39、67, Web site www.epa.gov.2CAN/CGSB-3.0 No. 60.32-2013CGSB 2013 All rights reserved3 Summary of test method3.1 In an ultrasonic bath, a sample of 0.100 g of silver wool is exposed to 180 mL of fuel sample in a glass test cell for 1h at 50C.3.2 Immediately after the test time has elapsed, the silver w
40、ool is removed from the fuel sample, rinsed with wash solvent and dried.3.3 The wool is then pressed into a disk and rated.4 Terms and definitionsFor the purposes of this method, the following terms and definitions apply.4.1bulk wool silver wool that has been opened, dated when first used, and from
41、which sub samples (working quantities) are taken.4.2working quantitysilver wool that is sub sampled and prepared from the “bulk wool” and allotted into weekly working samples.5 Significance and use5.1 Fuel wetted fuel system components made of silver or silver alloys can suffer surface corrosion fro
42、m certain trace sulphur species (such as H2S and elemental sulphur, even at a fractional parts per million concentration) occasionally found in gasoline or distillate fuel. Silver or silver-plated bearings used in some fuel pumps and certain silver or silver alloy contacts used in some fuel level se
43、nder units are examples of components that can be adversely affected. A layer of silver sulphide on a silver electrical contact can change the resistance, resulting in erroneous electrical signals being sent from fuel level sender units to fuel gauges.5.2 This method provides a relatively rapid mean
44、s for determining the degree of corrosiveness to silver of gasoline, gasoline oxygenates, middle distillates, and biodiesel fuel blends. The method is also adaptable for product field testing.6 Apparatus6.1 Test cells: to meet US EPA Specifications and Guidance for Contaminant-Free Sample Containers
45、. 250 mL capacity, wide-mouth, clear glass jars (typically 50 mm inner diameter by 127 mm high) with polytetrafluoroethylene (PTFE) lined caps.NOTE I-Chem Certified 200 Series meets the above specifications.6.2 Timer: a bench top type, or digital timer integrated with the ultrasonic bath (see 6.3).
46、The timer shall have a minimum 90 min range and an accuracy of 15 s within 90 min.6.3 Ultrasonic temperature-controlled bath: a bath with a heater capable of maintaining a temperature of 50 2 C. A bath with industrial stacked transducers and employing a sweep frequency is required. Before use, the b
47、ath shall be fitted with or modified as described in 6.3.1 to 6.3.3.6.3.1 A perforated stainless steel support tray, or mesh basket, is required to keep the test cells off the bottom of the bath, and at the required submerged level (see 8.2.4.7) when the bath is filled to a liquid level required for
48、 operation. Consult with the manufacturer or the supplier of the bath.CAN/CGSB-3.0No. 60.32-20133CGSB 2013 All rights reserved6.3.2 During normal operation, the bath temperature will have a tendency to increase over time due to the ultrasonic energy input. A cooling coil is necessary to maintain ade
49、quate temperature control. A cooling coil fabricated from thin walled 6.35 mm (”) stainless steel tubing, bent to fit as appropriate has been found to work well. A simple throttling valve is used to adjust the cooling water flow rate.NOTE Tubing Industry standard nomenclature is expressed in inches.6.3.2.1 The cooling coil shall be placed 1 to 2 cm below the surface of the water for maximum effectiveness. Simple wire hangers attached to the sides of the bath have been found to be acceptable. If the coil is placed on the bottom o
