ISO 21809-1:2018
Petroleum and natural gas industries — External coatings for buried or submerged pipelines used in pipeline transportation systems — Part 1: Polyolefin coatings (3-layer PE and 3-layer PP)
This document specifies requirements for plant-applied external three-layer polyethylene and polypropylene based coatings for corrosion protection of welded and seamless steel pipes for pipeline transportation systems in the petroleum and natural gas industries in accordance with ISO 13623.
NOTE Pipes coated in accordance with this document are considered suitable for further protection by means of cathodic protection.
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Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Conformance
4.1 Rounding
4.2 Compliance with this document
5 Symbols and abbreviated terms
5.1 Symbols
5.2 Abbreviations
6 Information supplied by the purchaser
6.1 General information
6.2 Additional information
7 Coating classification
7.1 General
7.2 Coating classes
7.3 Coating thickness classes
8 Qualification processes
8.1 General — Qualification scheme
8.2 Application procedure specification
8.3 Pre-production trial (PPT)
8.4 Inspection and testing plan (ITP)
8.5 Procedure qualification trial (PQT)
9 Coating material qualification
9.1 Composition of the coating system
9.2 Qualification of the coating materials
9.2.1 General requirements
9.2.2 Epoxy material
9.2.3 Adhesive material
9.2.4 PE/PP top layer material
9.3 Batch certificate
9.4 Storage and handling of coating materials
10 Coating system qualification
11 Application of the coating system
11.1 General
11.2 Surface preparation
11.2.1 Initial preparation
11.2.2 Abrasive blast cleaning — Cleanliness and surface roughness
11.2.3 Surface dust contamination
11.2.4 Surface pre-treatment and salt contamination
11.3 Coating application
11.3.1 General
11.3.2 Epoxy application
11.3.3 Adhesive application
11.3.4 PE/PP application
11.3.5 Rough coat application
11.4 Cutback
12 Inspection and testing
12.1 General
12.2 Re-testing
13 Coating repairs
14 Marking
14.1 General
14.2 Required markings
15 Handling and storage in the applicator’s facilities
15.1 Handling
15.2 Storage
16 Test reports and certificate of compliance
Annex A (normative) Inspection of thickness
Annex B (normative) Holiday detection test
Annex C (normative) Peel strength test
Annex D (normative) Thermal analysis of epoxy and cured epoxy coating film with Tg ≤ 115°C
Annex E (normative) Impact test
Annex F (normative) Indentation test
Annex G (normative) UV ageing test and thermal ageing test
Annex H (normative) Cathodic disbondment test
Annex I (normative) Flexibility test
Annex J (normative) Gel time of the epoxy powder
Annex K (normative) Total volatile/moisture content of the epoxy powder — Mass loss
Annex L (normative) Hot water immersion test
Annex M (normative) Density of epoxy powder
Bibliography
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Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Conformance
4.1 Rounding
4.2 Compliance with this document
5 Symbols and abbreviated terms
5.1 Symbols
5.2 Abbreviations
6 Information supplied by the purchaser
6.1 General information
6.2 Additional information
7 Coating classification
7.1 General
7.2 Coating classes
7.3 Coating thickness classes
8 Qualification processes
8.1 General — Qualification scheme
8.2 Application procedure specification
8.3 Pre-production trial (PPT)
8.4 Inspection and testing plan (ITP)
8.5 Procedure qualification trial (PQT)
9 Coating material qualification
9.1 Composition of the coating system
9.2 Qualification of the coating materials
9.2.1 General requirements
9.2.2 Epoxy material
9.2.3 Adhesive material
9.2.4 PE/PP top layer material
9.3 Batch certificate
9.4 Storage and handling of coating materials
10 Coating system qualification
11 Application of the coating system
11.1 General
11.2 Surface preparation
11.2.1 Initial preparation
11.2.2 Abrasive blast cleaning — Cleanliness and surface roughness
11.2.3 Surface dust contamination
11.2.4 Surface pre-treatment and salt contamination
11.3 Coating application
11.3.1 General
11.3.2 Epoxy application
11.3.3 Adhesive application
11.3.4 PE/PP application
11.3.5 Rough coat application
11.4 Cutback
12 Inspection and testing
12.1 General
12.2 Re-testing
13 Coating repairs
14 Marking
14.1 General
14.2 Required markings
15 Handling and storage in the applicator’s facilities
15.1 Handling
15.2 Storage
16 Test reports and certificate of compliance
Annex A (normative) Inspection of thickness
Annex B (normative) Holiday detection test
Annex C (normative) Peel strength test
Annex D (normative) Thermal analysis of epoxy and cured epoxy coating film with Tg ≤ 115°C
Annex E (normative) Impact test
Annex F (normative) Indentation test
Annex G (normative) UV ageing test and thermal ageing test
Annex H (normative) Cathodic disbondment test
Annex I (normative) Flexibility test
Annex J (normative) Gel time of the epoxy powder
Annex K (normative) Total volatile/moisture content of the epoxy powder — Mass loss
Annex L (normative) Hot water immersion test
Annex M (normative) Density of epoxy powder
Bibliography