ISO INTERNATIONAL STANDARD 21809-2 Second edition 2014-11-01 Petroleum and natural gas industries External coatings for buried or submerged pipelines used in pipeline transportation systems - Part 2: Single layer fusion-bonded epoxy coatings Industriesdupétrole etdugaz naturel-Revetementsexternes des conduites enterrees et immergées utilisées dans les systemes de transport par conduites - Partie 2: Revetements monocouche a base de résine époxydique appliquéeparfusion Reference number IS0 21809-2:2014(E) ISO @ IS0 2014 IS0 21809-2:2014(E) Contents Page Foreword ..iv Introduction. ..V 1 Scope. ..1 2 Normative references 3 Terms and definitions ..2 4 Symbols and abbreviated terms 4.1 Symbols .4 4.2 Abbreviated terms ..4 5 General requirements ..4 5.1 Rounding .4 5.2 Compliance to standard Information supplied by the purchaser .5 6 6.1 General information. ..5 6.2 Additional information 7 Coating materials. 7.1 Epoxy powder. .6 7.2 Repair materials. .7 8 Coating qualification 8.1 Qualification by manufacturer. ..8 8.2 Qualification by applicator 10 9 Application of coating ..12 9.1 General .12 9.2 Surface preparation .13 9.3 Coating application and curing temperature ..14 9.4 Coating thicknes.. ..14 9.5 Cutback .15 10 Inspection and testing ..15 10.1 General ..15 10.2 Testing of incoming epoxy powder .15 10.3 In-process and finished product testing requirements ..15 10.4 Test results. ..17 11 Repair of coated pipe. .17 11.1 General. .17 11.2 Repair of holidays. ..17 11.3 Stripping and recoating .17 12 Markings ..18 12.1 General ..18 12.2 Required markings .18 13 Handling and storage in the coating area ..18 13.1 Handling. 13.2 Storage .18 14 Test reports and inspection documents ..19 Annex A (normative) Test methods ..20 Annex B (normative) Procedure qualification trial (PQT), inspection and testing plan (ITP) and daily log .47 Bibliography .50 @ IS0 2014 - All rights reserved iii IS0 21809-2:2014(E) 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 throughIsotechnicalcommittees.Eachmemberbodyinterestedinasubjectforwhichatechnical 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. The procedures used to develop this document and those intended for its further maintenance are described in the IsO/IEC Directives, Part 1. Inparticularthe different approval criteria needed forthe 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. 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. Details of anypatentrightsidentifiedduringthedevelopmentofthedocumentwillbeintheIntroductionand/or on the Iso list of patent declarations received. 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 meaning of Iso specific terms and expressions related to conformity assessment, as well as information about ISO's adherence to the WTO principles in the Technical Barriers to Trade (TBT) see the following URL: Foreword - Supplementary information The committee responsible for this documentis ISo/TC 67, Materials, equipment and offshore structures for petroleum, petrochemical and natural gas industries, Subcommittee Sc 2, Pipeline transportation systems. This second edition cancels and replaces the first edition (IS0 21809-2:2007), which has