ISO 19277:2018

INTERNATIONAL ISO
STANDARD 19277
First edition
2018-12
Petroleum, petrochemical and natural
gas industries — Qualification testing
and acceptance criteria for protective
coating systems under insulation
Industries du pétrole, de la pétrochimie et du gaz naturel — Essais de
qualification des systèmes de revêtement protecteurs sous isolation
Reference number
©
ISO 2018
© ISO 2018
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ii © ISO 2018 – All rights reserved

Contents Page
Foreword .v
Introduction .vi
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 2
4 Performance testing design . 3
4.1 Relationship between artificial testing and natural exposure . 3
4.2 Laboratory tests . 3
4.3 Additional laboratory tests . 4
5 CUI classification environments . 4
6 Test samples . 4
6.1 Test panels . 4
6.2 Steel substrates . 4
6.3 Sampling of coatings . 5
6.4 Number of test panels . 5
6.5 Coating systems . 5
6.5.1 Coating application . 5
6.5.2 Dry film thickness . 5
6.5.3 Overcoating interval . 6
6.5.4 Conditioning . 6
6.5.5 Heat conditioning . 6
6.6 Scribe . 6
6.7 Reference system . 6
7 Test procedures and assessment . 6
7.1 Assessment and acceptance . 6
7.2 Assessment of adhesion and artificial ageing . 6
7.2.1 Adhesion testing before artificial ageing . 6
7.2.2 Artificial ageing . 7
7.2.3 Adhesion testing after artificial ageing . 7
7.3 Thermal cycling test . 8
7.4 Multi-phase CUI cyclic corrosion test . 8
7.4.1 Description of test. 8
7.4.2 Test equipment-apparatus . 8
7.4.3 Test set-up and preparation .11
7.4.4 Test procedure .11
7.4.5 Acceptance .12
8 Optional tests .13
8.1 Optional cryogenic cycling testing .13
8.1.1 General.13
8.1.2 Cryogenic test .13
8.1.3 Adhesion testing after cryogenic test aging .13
8.2 Optional vertical pipe test .14
8.2.1 Application .14
8.2.2 Description of test.14
8.2.3 Test equipment — Apparatus .14
8.2.4 Test process scope .16
8.2.5 Temperature profile calibration .16
8.2.6 Test equipment — Procedure .16
8.3 Additional performance tests .16
9 Test report .17
Annex A (informative) Corrosion testing of conditioned and heat conditioned test samples .18
Annex B (informative) Example of test report for CUI coating acceptance .19
Annex C (informative) Example of test report for cryogenic testing .23
Annex D (informative) Example of test report for optional vertical pipe test .24
Bibliography .27
iv © ISO 2018 – All rights reserved

Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
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electrotechnical standardization.
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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 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
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.org/iso/foreword .html.
This document was prepared by Technical Committee ISO/TC 67, Materials, equipment and offshore
structures for petroleum, petrochemical and natural gas industries.
Any feedback or questions on this document should be directed to the user’s national standards body. A
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Introduction
Unprotected carbon steel in insulated service with the presence of water and concentrating
contaminants from the atmosphere or surrounding sources can cause accelerated corrosion and lead
to severe metal loss. Additionally, unprotected austenitic and duplex stainless steels can suffer external
chloride-induced stress corrosion cracking if contaminates, such as chlorides from the atmosphere
and or the insulation, are present at the steel surface. Therefore, steel structures under insulation are
normally protected to prevent corrosion-related damage during the operational life required of the
equipment.
There are different ways of protecting steel structures from corrosion under insulation. This document
deals with protection by use of coating when used as part of a system, including insulation and cladding
materials, which can work together to prevent corrosion under insulation (
...