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BS EN ISO 18797-2:2021

BS EN ISO 18797-2:2021

$215.11

Petroleum, petrochemical and natural gas industries. External corrosion protection of risers by coatings and linings – Maintenance and field repair coatings for riser pipes

Published By Publication Date Number of Pages
BSI 2021 76
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This document specifies the selection criteria and minimum requirements for protective coating systems for maintenance and field repair of risers exposed to conditions in the splash zone. It is applicable for maintenance requirements and field repairs of riser coatings.

This document does not apply to the selection of techniques and materials used to restore integrity of the risers to be coated, nor does it apply to the selection of additional mechanical protective materials that are not part of the coating systems described in this document.

New construction shop applied riser coatings are covered in ISO 18797-1 . Compatible maintenance and repair coating systems specified in ISO 18797-1 are covered in this document.

PDF Catalog

PDF Pages PDF Title
2 undefined
8 Foreword
9 Introduction
11 1 Scope
2 Normative references
14 3 Terms and definitions
17 4 Symbols and abbreviated terms
4.1 Symbols
4.2 Abbreviated terms
5 Coating types
18 6 General requirements
6.1 Clientā€™s requirements
6.1.1 Approval of repair coating and repair method
6.1.2 Specification of purchase order mandatory information
19 6.1.3 Specification of purchase order additional information
6.2 Contractorā€™s requirements
6.2.1 Documented information
20 6.2.2 Marking of coating materials
6.3 Rounding
6.4 Conformity to requirements
6.5 Criteria for the condition assessment of an existing coating
6.5.1 General ā€“ Evaluation of coating condition
21 6.5.2 Applicable inspection techniques
7 Qualification processes and application procedures
7.1 General
22 7.2 APS and ITP
7.2.1 General
7.2.2 APS
23 7.2.3 ITP
7.3 Technical assessment of coating conformity
7.4 Procedure qualification trial
24 7.5 Pre-production trial
25 7.6 Production, testing and inspection
7.6.1 General
7.6.2 Inspection documents and traceability
8 Selection criteria for repair coatings
8.1 General
26 8.2 Application constraints
8.2.1 Wet substrates
27 8.2.2 Contamination by soluble salts
8.2.3 Dust contamination
8.2.4 Contamination by oil, grease and other petroleum-like products
8.2.5 Compatibility with existing coating
28 8.2.6 Feasibility of surface cleaning
8.2.7 Space and riser access constraints
8.2.8 Time constraints
8.2.9 Temperatures and relative humidity
8.2.10 Coating continuity
29 8.3 Operational conditions
8.3.1 Resistance to ageing, weathering and water
8.3.2 Resistance to mechanical loads
8.3.3 Interaction with cathodic protection
9 Test programs
9.1 Substrate conditions used for tests
9.2 Inspections, tests and frequencies
30 9.3 Thickness testing
9.4 Retest
31 10 Non-crystalline low-viscosity polyolefin-based coatings
10.1 Coating identification
10.2 Description of the coatings
32 10.3 Surface preparation
10.4 Application of coatings
10.4.1 General
10.4.2 Overlap
10.5 Testing of coatings
10.5.1 General
10.5.2 Thickness
33 10.5.3 Glass transition temperature and crystallization temperature
10.5.4 Holiday detection
10.5.5 Drip resistance
10.5.6 Adhesion to pipe surface and existing coating
34 10.5.7 Lap shear resistance
10.5.8 Specific electrical insulation resistance
10.5.9 Impact resistance
10.5.10 Indentation resistance
35 10.5.11 Cathodic disbondment resistance
10.5.12 Resistance to ageing and weathering
10.5.13 Peel strength between layers of outer wrap
36 10.5.14 Thermal ageing resistance
10.5.15 Hot-water immersion test
41 11 Petrolatum and wax-based tape wrap systems
11.1 Coating identification
42 11.2 Description of the tape wrap systems
11.2.1 Petrolatum tape wrap systems (type 11A)
11.2.2 Wax-based tape wrap systems (type 11B)
11.3 Surface preparation
11.4 Application of coating systems
11.4.1 General
11.4.2 Overlap
43 11.5 Testing of the coating systems
11.5.1 General
11.5.2 Density
11.5.3 Dielectric strength
11.5.4 Thickness
44 11.5.5 Holiday detection
11.5.6 Impact resistance
11.5.7 Specific electrical insulation resistance
11.5.8 Cathodic disbondment resistance
11.5.9 Adhesion to pipe surface and existing coating
45 11.5.10 Drip resistance
11.5.11 Hot water immersion test
11.5.12 Resistance to ageing and weathering
51 12 Polychloroprene-based elastomeric coatings
12.1 Coating identification
12.2 Description of the coatings
12.3 Surface preparation
12.4 Application of the coating
12.4.1 General
52 12.4.2 Overlap
12.5 Testing of the coatings
12.5.1 General
12.5.2 Visual appearance
12.5.3 Thickness
12.5.4 Holiday detection
12.5.5 Hardness
12.5.6 Adhesion to pipe surface and existing coating
53 12.5.7 Cathodic disbondment resistance
12.5.8 Density
12.5.9 Rheometer curve
12.5.10 Tensile strength
12.5.11 Elongation at break
12.5.12 Tear strength
12.5.13 Electrical volume resistivity
12.5.14 Ozone resistance
54 12.5.15 Resistance to seawater
12.5.16 Hot-water immersion test
12.5.17 Thermal ageing resistance
12.5.18 Resistance to ageing and weathering
56 13 Liquid-applied epoxy coatings
13.1 Coating identification
57 13.2 Description of the liquid-applied epoxy coating
13.3 Surface preparation
13.4 Application of the coatings
13.4.1 General
13.4.2 Overlap
13.5 Testing of the coatings
13.5.1 General
58 13.5.2 Dry-film thickness
13.5.3 Holiday detection
13.5.4 Hardness
13.5.5 Impact resistance
13.5.6 Indentation resistance
13.5.7 Specific electrical insulation resistance
59 13.5.8 Cathodic disbondment resistance
13.5.9 Adhesion to pipe surface and existing coating
13.5.10 Thermal ageing resistance
13.5.11 Hot-water immersion test
13.5.12 Resistance to ageing and weathering
64 Annex A (informative) Likelihood of exposure in splash zone area
66 Annex B (informative) Tests for coatings applied on wet substrates
75 Bibliography

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BS EN ISO 18797-2:2021
$215.11