1、BS ISO 15741:2016Paints and varnishes Friction-reduction coatingsfor the interior of on- andoffshore steel pipelines fornon-corrosive gasesBSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06BS ISO 15741:2016 BRITISH STANDARDNational forewordThis British Standard is the
2、UK implementation of ISO 15741:2016. It supersedes BS ISO 15741:2001 which is withdrawn.The UK participation in its preparation was entrusted to Technical Committee STI/21, Paint systems and surface preparation for metallic substrates.A list of organizations represented on this committee can be obta
3、ined on request to its secretary.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. The British Standards Institution 2016.Published by BSI Standards Limited 2016ISBN 978 0 580 91028 9 ICS 87.020 Compliance with
4、 a British Standard cannot confer immunity from legal obligations.This British Standard was published under the authority of the Standards Policy and Strategy Committee on 30 November 2016.Amendments/corrigenda issued since publicationDate T e x t a f f e c t e dBS ISO 15741:2016 ISO 2016Paints and
5、varnishes Friction-reduction coatings for the interior of on- and offshore steel pipelines for non-corrosive gasesPeintures et vernis Revtements rduisant le frottement pour lintrieur de gazoducs en acier enterrs et immergs pour le transport de gaz non corrosifsINTERNATIONAL STANDARDISO15741Second ed
6、ition2016-11-15Reference numberISO 15741:2016(E)BS ISO 15741:2016ISO 15741:2016(E)ii ISO 2016 All rights reservedCOPYRIGHT PROTECTED DOCUMENT ISO 2016, Published in SwitzerlandAll rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any
7、form or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below or ISOs member body in the country of the requester.ISO copyright officeCh. de Blandon
8、net 8 CP 401CH-1214 Vernier, Geneva, SwitzerlandTel. +41 22 749 01 11Fax +41 22 749 09 47copyrightiso.orgwww.iso.orgBS ISO 15741:2016ISO 15741:2016(E)Foreword vIntroduction vi1 Scope . 12 Normative references 13 Terms and definitions . 24 Coating material 24.1 General . 24.2 Particular requirements
9、for qualification of the coating material . 34.2.1 General 34.2.2 Non-volatile matter (by mass) . 34.2.3 Non-volatile matter (by volume) . 34.2.4 Viscosity 34.2.5 Density 34.2.6 Ash (residue on ignition) 34.2.7 Pot life 44.2.8 Infrared spectrograms 44.2.9 Appearance . 44.3 Particular requirements fo
10、r qualification of the cured paint film 44.3.1 Preparation of test panels 44.3.2 Conditioning of test panels . 44.3.3 Dry film thickness . 54.3.4 Adhesion . 54.3.5 Buchholz hardness 54.3.6 Resistance to neutral salt spray 54.3.7 Resistance to artificial ageing . 54.3.8 Bend test (conical mandrel) .
11、54.3.9 Resistance to gas pressure variations 54.3.10 Resistance to water immersion . 64.3.11 Resistance to chemicals . 64.3.12 Resistance to hydraulic blistering . 64.4 Packaging, labelling and storing 64.5 Quality assurance 64.6 Product data sheet . 64.7 Qualification certificate . 74.8 Batch test
12、certificate . 85 Application of the coating material 95.1 General . 95.2 Surface preparation . 105.3 Paint preparation . 105.4 Paint application . 106 Production control 116.1 Assessment of the coating on the pipes . 116.1.1 Appearance 116.1.2 Dry film thickness 116.2 Assessment of the coating on st
13、eel panels . 116.2.1 Preparation of test panels . 116.2.2 Adhesion 116.2.3 Buchholz hardness 116.2.4 Bend test 116.2.5 Curing test 116.2.6 Porosity test 117 Repairs .12 ISO 2016 All rights reserved iiiContents PageBS ISO 15741:2016ISO 15741:2016(E)8 Handling, transportation and storage.128.1 Handlin
14、g. 128.2 Transportation to the storage area . 128.3 Storage 128.4 Loading coated pipes for transportation . 12Annex A (normative) Determination of ash (refer to 4.2.5) 13Annex B (normative) Dry film thickness (refer to 6.1.2) 14Annex C (normative) Resistance to gas pressure variations (refer to 4.3.
15、9) .15Annex D (normative) Hydraulic-pressure blistering (refer to 4.3.12) .18Annex E (normative) Porosity of a film of the coating material on a glass panel (refer to 6.2.6) 20Annex F (normative) Curing test (refer to 6.2.5) 21Annex G (normative) Wet-sponge test (refer to 6.2.6) 22Bibliography .23iv
16、 ISO 2016 All rights reservedBS ISO 15741:2016ISO 15741:2016(E)ForewordISO (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 comm
17、ittees. 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
18、International Electrotechnical Commission (IEC) on all matters of electrotechnical 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
19、 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.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
20、 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 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 docume
21、nt is information given for the convenience of users and does not constitute an endorsement.For an explanation on 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 Te
22、chnical Barriers to Trade (TBT) see the following URL: www.iso.org/iso/foreword.html.The committee responsible for this document is ISO/TC 35, Paints and varnishes, Subcommittee SC 14, Protective paint systems for steel structures.This second edition cancels and replaces the first edition (ISO 15741
23、:2001), which has been technically revised. ISO 2016 All rights reserved vBS ISO 15741:2016ISO 15741:2016(E)IntroductionInternal coating of pipelines is used to reduce friction and improve the flow conditions when conveying non-corrosive gases, and to offer sufficient corrosion protection during sto
24、rage and transport of the pipes. The reduction in friction depends on various parameters like the pressure and temperature of the gas, and the diameter of the pipe. Therefore, it is not possible to give a single figure for this reduction in friction.In order to establish sufficient corrosion protect
25、ion and to ensure optimum performance of the internal coating in the steel pipes, it is necessary for owners of pipelines, planners, consultants, companies carrying out the work, inspectors of protective coatings and manufacturers of coating materials to have at their disposal state-of-the-art infor
26、mation in concise form including requirements for the coating. Such information has to be as complete as possible, unambiguous and easily understandable to avoid difficulties and misunderstandings between the parties concerned.vi ISO 2016 All rights reservedBS ISO 15741:2016Paints and varnishes Fric
27、tion-reduction coatings for the interior of on- and offshore steel pipelines for non-corrosive gases1 ScopeThis document specifies requirements and methods of test for liquid epoxy paints and internal coatings of such paints in steel pipes and fittings for the conveyance of non-corrosive gas. It als
28、o deals with the application of the paint. Other paints or paint systems are not excluded provided they comply with the requirements given in this document. The coating consists of one layer, which is normally shop-applied on blast-cleaned steel by airless spray or other suitable spraying techniques
29、. The applied and cured paint film must be smooth to give the desired reduction in friction. Brush application is only used for small repair jobs.2 Normative referencesThe following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this
30、 document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.ISO 2409, Paints and varnishes Cross-cut testISO 2811 (all parts), Paints and varnishes Determination of densityISO 2812-1:2007, P
31、aints and varnishes Determination of resistance to liquids Part 1: Immersion in liquids other than waterISO 2812-2, Paints and varnishes Determination of resistance to liquids Part 2: Water immersion methodISO 2815, Paints and varnishes Buchholz indentation testISO 3233-1, Paints and varnishes Deter
32、mination of the percentage volume of non-volatile matter Part 1: Method using a coated test panel to determine non-volatile matter and to determine dry film density by the Archimedes principleISO 3251, Paints, varnishes and plastics Determination of non-volatile-matter contentISO 6743-4, Lubricants,
33、 industrial oils and related products (class L) Classification Part 4: Family H (Hydraulic systems)ISO 6860, Paints and varnishes Bend test (conical mandrel)ISO 8501-1, Preparation of steel substrates before application of paints and related products Visual assessment of surface cleanliness Part 1:
34、Rust grades and preparation grades of uncoated steel substrates and of steel substrates after overall removal of previous coatingsISO 8503-1, Preparation of steel substrates before application of paints and related products Surface roughness characteristics of blast-cleaned steel substrates Part 1:
35、Specifications and definitions for ISO surface profile comparators for the assessment of abrasive blast-cleaned surfacesISO 8503-2, Preparation of steel substrates before application of paints and related products Surface roughness characteristics of blast-cleaned steel substrates Part 2: Method for
36、 the grading of surface profile of abrasive blast-cleaned steel Comparator procedureISO 9227, Corrosion tests in artificial atmospheres Salt spray testsINTERNATIONAL STANDARD ISO 15741:2016(E) ISO 2016 All rights reserved 1BS ISO 15741:2016ISO 15741:2016(E)ISO 19840:2012, Paints and varnishes Corros
37、ion protection of steel structures by protective paint systems Measurement of, and acceptance criteria for, the thickness of dry films on rough surfaces3 Terms and definitionsFor the purposes of this document, the terms and definitions given in ISO 4618 and the following apply.ISO and IEC maintain t
38、erminological databases for use in standardization at the following addresses: IEC Electropedia: available at http:/www.electropedia.org/ ISO Online browsing platform: available at http:/www.iso.org/obp3.1coatercompany which is responsible for application of the coating material in accordance with t
39、he provisions of this document3.2coating material manufacturersupplier of the coating material3.3dry film thicknessDFTthickness of a coating remaining on the surface when the coating has hardened/curedSOURCE: ISO 12944-5:2007, 3.103.4natural gascomplex gaseous mixture of hydrocarbons, primarily meth
40、ane, but generally also including ethane, propane and higher hydrocarbons in much smaller amounts and some non-combustible gases, such as nitrogen and carbon dioxideSOURCE: ISO 14532:2014, 2.1.1.13.5nominal dry film thicknessNDFTdry film thickness specified for each coat or for the whole paint syste
41、mSOURCE: ISO 12944-5:2007, 3.113.6pinholefilm defect characterized by small pore-like flaws in a coating which extend entirely through the applied film and have the general appearance of pinpricks when viewed by reflected light3.7purchaserorganization or individual that buys the coated pipes and fit
42、tings4 Coating material4.1 GeneralThe coating material shall typically be a two-pack epoxy paint. It shall not contain any substances which will be released from the paint film after it has cured and are proven to be detrimental to the operation of the pipeline and the quality of the gas.2 ISO 2016
43、All rights reservedBS ISO 15741:2016ISO 15741:2016(E)Unless otherwise agreed, the coating material shall be qualified in accordance with 4.2 and 4.3 and shall not be changed after qualification.The manufacturer of the coating material shall provide on request infrared spectrograms of the base compon
44、ent and the curing agent component (see 4.2.8).In addition, the manufacturer shall provide a product data sheet (see 4.6), a health and safety data sheet and a certificate stating the test results obtained in accordance with 4.2 and 4.3, respectively, and, if applicable, deviating test conditions.Th
45、e manufacturer shall also provide with every batch of the coating material a batch test certificate stating the information as given in 4.8.Unless otherwise agreed, the applied coating shall provide corrosion protection during storage and transport for a minimum period of one year without significan
46、t breakdown of the coating.The typical operating-temperature range for this type of coating is between 20 C and 110 C.Where, subsequently, external coatings have to be applied, care shall be taken not to allow the internal coating to be damaged by the elevated temperatures which may occur.4.2 Partic
47、ular requirements for qualification of the coating material4.2.1 GeneralThe following subclauses describe the laboratory test methods which are required for qualification of the coating material.4.2.2 Non-volatile matter (by mass)When determined in accordance with ISO 3251, the non-volatile matter (
48、by mass) of the coating material shall comply with the value specified by the coating material manufacturer in the qualification certificate (Table 2).4.2.3 Non-volatile matter (by volume)When determined in accordance with ISO 3233-1, the non-volatile matter (by volume) of the coating material shall
49、 comply with the value specified by the coating material manufacturer in the product data sheet (Table 1).4.2.4 ViscosityWhen determined by the method specified by the manufacturer, the viscosity of the ready-mixed coating material shall comply with the value specified by the coating material manufacturer in the qualification certificate (Table 2).4.2.5 DensityWhen determined in accordance with one of the parts of the ISO 2811 series, the density of the coating material shall comply with
