INTERNATIONAL STANDARD
Second edition2018-10
Petroleum andnaturalgasindustries-Externalcoatingsforburiedorsubmergedpipelinesusedinpipelinetransportationsystems
Polyolefincoatings(3-layerPEand Part1: 3-layerPP)
Industries du petrole et du gaz naturel Revetements externesdes conduites enterrees ou immergees utilisees dans les systemes de transport par conduites -
Partie 1: Revetements a base de polyolefines (PE tricouche et PPtricouche)
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Contents
Page
Foreword..Introduction.. .vi1 Scope.2 Normative references... .13 Terms and definitions.. .34 Conformances.. 4.1 Rounding- ..4.2 Compliance with this document. ..65 Symbols and abbreviated terms . 5.1 Symbols.. .65.2 Abbreviations.. .6 .76 Information supplied buy the purchaser.. 76.1 6.2 General informations. Additional information. 8” 7Coating classification.. 97.2 7.1 General. Coating classes. 6” 6”7.3 Coating thickness classes. 6”8 Qualification processes. 8.1 General Qualification scheme.. ..1. 108.2 8.3 Application procedure specification. .118.4 Pre-production trial (PPT). Inspection and testing plan (ITP) ..12 128.5 Procedure qualification trial (PQT)- .139 Coating material qualification.. 9.1 13 139.2 Qualification of the coating materials. 9.2.1 General requirements.. 14 149.2.2 Epoxy material.. ..1.49.2.3 9.2.4 PE/PP top layer material.. Adhesive material . ..15 159.4 9.3 Storage and handling of coating material. Batch certificate 1710 Coating system qualification... 18 1811 Application ofthe coating system. .1911.1 11.2 Surface preparation.. General.. ..19 2011.2.1 2011.2.2 11.2.3 Abrasive blast cleaning - Surface dust contamination... Cleanliness and surface roughness. 20 2011.3 Coating application.. 11.2.4 Surface pre-treatment and salt contamination 21 2111.3.1 General.. 2111.3.2 11.3.3 Epoxy application.. Adhesive application... 21 2111.3.4 11.3.5 PE/PP application. Rough coat application... 22 2211.4 Cutback. 2212 Inspection and testing. 22
12.1 12.2 Re-testing - General. 25 2213 Coating repairs... 2514 Marking.. 2514.1 14.2 Required markings. General. 25 2615 Handling and storage in the applicator's facilities. 2615.1 15.2 Storage. Handling- .26 2616 Test reports and certificate of pliance. 26Annex A (normative) Inspection of thickness .27Annex B (normative) Holiday detection test. ..9Annex C (normative) Peel strength test.. ..31Annex D (normative) Thermal analysis of epoxy and cured epoxy coating film With kg U A15°C...34Annex E (normative) Impact test. 39Annex G (normative) UV ageing test and thermal ageing test. Annex F (normative) Indentation test - ...41 ..43Annex H (normative) Cathodic disbondment test. ..47Annex I (normative) Flexibility test ... 52Annex J (normative) Gel time of the epoxy powder.. ..54Annex K (normative) Total volatile/moisture content of the epoxy powder - Mass loss.. ..66Annex L (normative) Hot water immersion test. ..8Annex M (normative) Density of epoxy powder. ..60Bibliography. 62
Foreword
mittee has been established has the right to be represented on that mittee. Internationalelectrotechnical standardization.
described in the ISO/IEC Directives Part 1. In particular the different approval criteria needed for the different types of ISO documents should be noted. This document was drafted in accordance with theeditorial rules of the ISO/IEC Directives Part 2 (see iso ore/directives}.
patent rights. ISO 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/oron the ISo list of patent declarations received (see iso ore/natents).
Any trade name used in this document is information given for the convenience of users and does not constitute an endorsement.
For an explanation of the voluntary nature of standards the meaning of ISO specific terms andexpressions related to conformity assessment as well as information about ISO's adherence to theWorld Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see iso ore/iso/foreword html.
This document was prepared by Technical Committee ISo/TC 67 Materials equipment and offshorestructures for petroleum petrochemical and natural gas industries Submittee SC 2 Pipelinetransportation systems.
This second edition cancels and replaces the first edition (ISO 21809-1:2011) which has been technically revised.
The main changes pared to the previous edition are as follows:
adoption of qualification processes fClause 8);o () shoe qusia uoso q ape sadd uo uogede ueo r sonsad pappelined/clad internally with a CRA;- cathodic disbondment test conditions revised.
A list of all parts in the ISO 21809 series can be found on the ISO website.
yApoq sprepues euoeu s asn a o paoap aq pnous quaunop su uo suogsanb ro yeqpaa uplete listing of these bodies can be found at iso ore/members html.
