ISO 21809-3:2016
Petroleum and natural gas industries — External coatings for buried or submerged pipelines used in pipeline transportation systems — Part 3: Field joint coatings
ISO 21809-3:2016 specifies requirements for field joint coating of seamless or welded steel pipes for buried and submerged sections of pipeline transportation systems used in the petroleum, petrochemical and natural gas industries as defined in ISO 13623. This part of ISO 21809 specifies the qualification, application and testing of the corrosion protection coatings applied to steel surfaces left bare after the joining of pipes and fittings (components) by welding.
ISO 21809-3:2016 defines and codifies in Table 1 the different types of field joint coatings for pipelines.
ISO 21809-3:2016 does not address requirements for additional mechanical protection, for thermal insulation or for joint infills of concrete weight-coated pipes.
NOTE Field joints of pipes and fittings coated in accordance with this part of ISO 21809 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 Symbols and abbreviated terms
4.1 Symbols
4.2 Abbreviated terms
5 General requirements
5.1 Responsibily of the end user
5.2 Rounding
5.3 Compliance, testing and quality
6 Information to be supplied by the purchaser
6.1 General information
6.2 Additional information
7 Application procedures and qualification
7.1 Application procedure specification (APS)
7.2 Coating materials
7.3 Procedure qualification trial (PQT)
7.4 Pre-production trial (PPT)
7.5 Qualification of coating and inspection personnel
7.6 Production testing and inspection
7.7 Inspection documents and traceability
8 Classification of field joint coatings
9 General requirements for surface preparation, coating application, testing and repair
9.1 Surface preparation
9.1.1 General
9.1.2 Preparation of the steel substrate
9.1.3 Preparation of the adjacent plant-applied coating
9.2 Application of the coating
9.3 Visual inspection of the applied coating
9.4 Testing of the field joint coating
9.5 Repairs
9.6 Verification, handling and storage of coating materials
10 Hot-applied bituminous tape coatings
10.1 Coating identification
10.2 Description of the coatings
10.3 Surface preparation
10.4 Coating application
10.4.1 General
10.4.2 Application of the primer
10.4.3 Application of the bituminous tapes
10.4.4 Overlap
10.5 Testing of the applied coatings
10.5.1 General
10.5.2 Thickness
10.5.3 Holiday detection
10.5.4 Impact resistance
10.5.5 Indentation resistance
10.5.6 Specific electrical insulation resistance
10.5.7 Cathodic disbondment
10.5.8 Peel strength to pipe surface and plant coating
10.5.9 Hot-water immersion test
10.5.10 Lap shear strength
11 Petrolatum and wax-based tape coatings
11.1 Coating identification
11.2 Description of the coatings
11.2.1 Petrolatum tapes (Type 11A)
11.2.2 Wax-based tapes (Type 11B)
11.3 Surface preparation
11.4 Coating application
11.4.1 General
11.4.2 Application of the primer
11.4.3 Application of petrolatum or wax-based tapes
11.4.4 Overlap
11.5 Testing of the applied coatings
11.5.1 General
11.5.2 Thickness
11.5.3 Holiday detection
11.5.4 Impact resistance
11.5.5 Indentation resistance
11.5.6 Specific electrical insulation resistance
11.5.7 Cathodic disbondment
11.5.8 Peel strength to pipe surface and plant coating
11.5.9 Hot-water immersion test
11.5.10 Drip resistance
12 Cold-applied polymeric tape coatings
12.1 Coating identification
12.2 Description of the coatings
12.3 Surface preparation
12.4 Coating application
12.4.1 General
12.4.2 Application of the primer
12.4.3 Application of polymeric tapes
12.4.4 Overlap
12.5 Testing of the applied coatings
12.5.1 General
12.5.2 Thickness
12.5.3 Holiday detection
12.5.4 Impact resistance
12.5.5 Indentation resistance
12.5.6 Cathodic disbondment
12.5.7 Peel strength between tape layers of polymeric tapes
12.5.8 Peel strength to pipe surface and plant coating
12.5.9 Hot-water immersion test
12.5.10 Lap shear strength
12.5.11 Thermal ageing resistance
13 Non-crystalline low-viscosity polyolefin based coatings
13.1 Coating identification
13.2 Description of the coatings
13.3 Surface preparation
13.4 Application of the coatings
13.4.1 General
13.4.2 Overlap
13.5 Testing of the applied coating
13.5.1 General
13.5.2 Thickness
13.5.3 Holiday detection
13.5.4 Impact resistance
13.5.5 Indentation resistance
13.5.6 Specific electrical insulation resistance
13.5.7 Cathodic disbondment resistance
13.5.8 Peel strength between layers of outer wrap
13.5.9 Adhesion to pipe surface and plant coating
13.5.10 Thermal ageing resistance
13.5.11 Resistance to lap shear
13.5.12 Hot-water immersion test
13.5.13 Glass transition and crystallization temperatures
13.5.14 Drip resistance
14 Coatings based on heat-shrinkable materials
14.1 Coating identification
14.2 Description of the coatings
14.2.1 General
14.2.2 Type 14A
14.2.3 Types 14B, 14C and 14D
14.3 Surface preparation
14.4 Application of the coatings
14.4.1 General
14.4.2 Application of the primer
14.4.3 Application of heat-shrinkable materials
14.4.4 Overlap
14.5 Testing of the applied coatings
14.5.1 General
14.5.2 Thickness
14.5.3 Holiday detection
14.5.4 Peel strength
14.5.5 Cathodic disbondment
14.5.6 Hot-water immersion test
14.5.7 Impact resistance
14.5.8 Indentation resistance
14.5.9 Lap shear strength
14.5.10 Thermal ageing resistance and thermal stability
14.5.11 Bursting strength
14.5.12 Oxidation induction time
15 Hot-applied microcrystalline wax coatings
15.1 Coating identification
15.2 Description of the coating
15.3 Surface preparation
15.4 Application of the coating
15.4.1 General
15.4.2 Application of the microcrystalline wax
15.4.3 Application of the outer wrap
15.4.4 Application of wax top coat
15.5 Testing of the applied coatings
15.5.1 General
15.5.2 Thickness
15.5.3 Holiday detection
15.5.4 Adhesion
15.5.5 Hardness
16 Elastomeric coatings
16.1 Coating identification
16.2 Description of the coatings
16.3 Surface preparation
16.4 Application of the coatings
16.4.1 General
16.4.2 In situ vulcanization method
16.4.3 Ambient-cure adhesive method
16.5 Testing of the applied coatings
16.5.1 General
16.5.2 Visual appearance
16.5.3 Coating thickness
16.5.4 Holiday detection
16.5.5 Hardness
16.5.6 Adhesion
16.5.7 Hot-water immersion test
16.5.8 Cathodic disbondment
16.5.9 Density
16.5.10 Rheometer curve — Oscillating disc
16.5.11 Tensile strength
16.5.12 Elongation at break
16.5.13 Tear strength
16.5.14 Electrical volume resistivity
16.5.15 Ozone resistance
16.5.16 Resistance to seawater
17 Fusion-bonded epoxy (FBE) powder coatings
17.1 Coating identification
17.2 Description of the coatings
17.3 Surface preparation
17.4 Application of the coatings
17.4.1 General
17.4.2 Transport and storage of epoxy powder
17.4.3 Heating
17.4.4 Application of epoxy powder
17.5 Testing of the applied coatings
17.5.1 General
17.5.2 Visual appearance
17.5.3 Thickness
17.5.4 Holiday detection
17.5.5 Adhesion
17.5.6 Degree of cure
17.5.7 Impact resistance
17.5.8 Cathodic disbondment
17.5.9 Hot-water immersion test
17.5.10 Flexibility
18 Liquid-applied coatings
18.1 Coating identification
18.2 Description of the coatings
18.2.1 Liquid epoxy — 18A
18.2.2 Liquid polyurethane — 18B
18.2.3 Fibre reinforced epoxy — 18C
18.2.4 Fibre reinforced vinyl ester — 18D
18.2.5 Cast polyurethane — 18E
18.3 Surface preparation
18.4 Application of the coatings
18.4.1 General
18.4.2 Heating
18.4.3 Liquid coatings application
18.5 Testing of the applied coatings
18.5.1 General
18.5.2 Thickness
18.5.3 Holiday detection
18.5.4 Adhesion
18.5.5 Impact resistance
18.5.6 Hardness
18.5.7 Cathodic disbondment
18.5.8 Hot-water immersion test
18.5.9 Flexibility
18.5.10 Indentation resistance
18.5.11 Specific electrical insulation resistance
18.5.12 Compressive strength
18.5.13 Electrical volume resistivity
18.5.14 Water absorption
19 Hot-applied polyolefin-based coatings
19.1 Coating identification
19.2 Description of the coatings
19.2.1 Flame-sprayed polypropylene — Type 19A
19.2.2 Hot-applied polypropylene tapes/sheets — Type 19B
19.2.3 Injection-moulded polypropylene — Type 19C
19.2.4 Flame-sprayed polyethylene — Type 19D
19.2.5 Hot-applied polyethylene tapes/sheets — Type 19E
19.2.6 Thickness of the epoxy primer
19.3 Surface preparation
19.4 Application of the coating
19.4.1 General
19.4.2 Heating
19.4.3 Application of the epoxy layer
19.4.4 Application of the chemically modified PP or PE
19.4.5 Application of the polyolefin top coat
19.5 Testing of the applied coatings
19.5.1 General
19.5.2 Thickness
19.5.3 Holiday detection
19.5.4 Peel strength
19.5.5 Adhesion to plant coating
19.5.6 Hot-water immersion test
19.5.7 Degree of cure
19.5.8 Cathodic disbondment
19.5.9 Impact resistance
19.5.10 Indentation resistance
19.5.11 Oxidation induction time
19.5.12 Flexibility
20 Thermal spray aluminium (TSA) coatings
20.1 Coating identification
20.2 Description of the coating
20.3 Qualification
20.4 Surface preparation
20.5 Application of the coating
20.5.1 General
20.5.2 Aluminium
20.5.3 Sealer
20.6 Testing of the applied coating
20.6.1 General
20.6.2 Visual inspection
20.6.3 TSA porosity
20.6.4 Coating thickness
20.6.5 Bend test
20.6.6 Pull-off adhesion test
20.6.7 Sealer penetration
Annex A (normative) Test programmes for procedure qualification trials (PQT), pre-production trials (PPT) or production testing
Annex B (normative) Inspection of thickness
Annex C (normative) Holiday detection test
Annex D (normative) Impact test
Annex E (normative) Indentation test
Annex F (normative) Specific electrical insulation resistance
Annex G (normative) Cathodic disbondment test
Annex H (normative) Peel strength test
Annex I (normative) Hot water immersion test
Annex J (normative) Lap shear strength
Annex K (normative) Drip resistance
Annex L (normative) Peel strength between layers
Annex M (normative) Thermal ageing resistance
Annex N (normative) Thermal stability test (Hot air ageing)
Annex O (normative) Bursting strength of reinforced backing
Annex P (normative) Thermal analysis of epoxy power and cured coating film (FBE)
Annex Q (normative) Adhesion test — Resistance to removal
Bibliography
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Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Symbols and abbreviated terms
4.1 Symbols
4.2 Abbreviated terms
5 General requirements
5.1 Responsibily of the end user
5.2 Rounding
5.3 Compliance, testing and quality
6 Information to be supplied by the purchaser
6.1 General information
6.2 Additional information
7 Application procedures and qualification
7.1 Application procedure specification (APS)
7.2 Coating materials
7.3 Procedure qualification trial (PQT)
7.4 Pre-production trial (PPT)
7.5 Qualification of coating and inspection personnel
7.6 Production testing and inspection
7.7 Inspection documents and traceability
8 Classification of field joint coatings
9 General requirements for surface preparation, coating application, testing and repair
9.1 Surface preparation
9.1.1 General
9.1.2 Preparation of the steel substrate
9.1.3 Preparation of the adjacent plant-applied coating
9.2 Application of the coating
9.3 Visual inspection of the applied coating
9.4 Testing of the field joint coating
9.5 Repairs
9.6 Verification, handling and storage of coating materials
10 Hot-applied bituminous tape coatings
10.1 Coating identification
10.2 Description of the coatings
10.3 Surface preparation
10.4 Coating application
10.4.1 General
10.4.2 Application of the primer
10.4.3 Application of the bituminous tapes
10.4.4 Overlap
10.5 Testing of the applied coatings
10.5.1 General
10.5.2 Thickness
10.5.3 Holiday detection
10.5.4 Impact resistance
10.5.5 Indentation resistance
10.5.6 Specific electrical insulation resistance
10.5.7 Cathodic disbondment
10.5.8 Peel strength to pipe surface and plant coating
10.5.9 Hot-water immersion test
10.5.10 Lap shear strength
11 Petrolatum and wax-based tape coatings
11.1 Coating identification
11.2 Description of the coatings
11.2.1 Petrolatum tapes (Type 11A)
11.2.2 Wax-based tapes (Type 11B)
11.3 Surface preparation
11.4 Coating application
11.4.1 General
11.4.2 Application of the primer
11.4.3 Application of petrolatum or wax-based tapes
11.4.4 Overlap
11.5 Testing of the applied coatings
11.5.1 General
11.5.2 Thickness
11.5.3 Holiday detection
11.5.4 Impact resistance
11.5.5 Indentation resistance
11.5.6 Specific electrical insulation resistance
11.5.7 Cathodic disbondment
11.5.8 Peel strength to pipe surface and plant coating
11.5.9 Hot-water immersion test
11.5.10 Drip resistance
12 Cold-applied polymeric tape coatings
12.1 Coating identification
12.2 Description of the coatings
12.3 Surface preparation
12.4 Coating application
12.4.1 General
12.4.2 Application of the primer
12.4.3 Application of polymeric tapes
12.4.4 Overlap
12.5 Testing of the applied coatings
12.5.1 General
12.5.2 Thickness
12.5.3 Holiday detection
12.5.4 Impact resistance
12.5.5 Indentation resistance
12.5.6 Cathodic disbondment
12.5.7 Peel strength between tape layers of polymeric tapes
12.5.8 Peel strength to pipe surface and plant coating
12.5.9 Hot-water immersion test
12.5.10 Lap shear strength
12.5.11 Thermal ageing resistance
13 Non-crystalline low-viscosity polyolefin based coatings
13.1 Coating identification
13.2 Description of the coatings
13.3 Surface preparation
13.4 Application of the coatings
13.4.1 General
13.4.2 Overlap
13.5 Testing of the applied coating
13.5.1 General
13.5.2 Thickness
13.5.3 Holiday detection
13.5.4 Impact resistance
13.5.5 Indentation resistance
13.5.6 Specific electrical insulation resistance
13.5.7 Cathodic disbondment resistance
13.5.8 Peel strength between layers of outer wrap
13.5.9 Adhesion to pipe surface and plant coating
13.5.10 Thermal ageing resistance
13.5.11 Resistance to lap shear
13.5.12 Hot-water immersion test
13.5.13 Glass transition and crystallization temperatures
13.5.14 Drip resistance
14 Coatings based on heat-shrinkable materials
14.1 Coating identification
14.2 Description of the coatings
14.2.1 General
14.2.2 Type 14A
14.2.3 Types 14B, 14C and 14D
14.3 Surface preparation
14.4 Application of the coatings
14.4.1 General
14.4.2 Application of the primer
14.4.3 Application of heat-shrinkable materials
14.4.4 Overlap
14.5 Testing of the applied coatings
14.5.1 General
14.5.2 Thickness
14.5.3 Holiday detection
14.5.4 Peel strength
14.5.5 Cathodic disbondment
14.5.6 Hot-water immersion test
14.5.7 Impact resistance
14.5.8 Indentation resistance
14.5.9 Lap shear strength
14.5.10 Thermal ageing resistance and thermal stability
14.5.11 Bursting strength
14.5.12 Oxidation induction time
15 Hot-applied microcrystalline wax coatings
15.1 Coating identification
15.2 Description of the coating
15.3 Surface preparation
15.4 Application of the coating
15.4.1 General
15.4.2 Application of the microcrystalline wax
15.4.3 Application of the outer wrap
15.4.4 Application of wax top coat
15.5 Testing of the applied coatings
15.5.1 General
15.5.2 Thickness
15.5.3 Holiday detection
15.5.4 Adhesion
15.5.5 Hardness
16 Elastomeric coatings
16.1 Coating identification
16.2 Description of the coatings
16.3 Surface preparation
16.4 Application of the coatings
16.4.1 General
16.4.2 In situ vulcanization method
16.4.3 Ambient-cure adhesive method
16.5 Testing of the applied coatings
16.5.1 General
16.5.2 Visual appearance
16.5.3 Coating thickness
16.5.4 Holiday detection
16.5.5 Hardness
16.5.6 Adhesion
16.5.7 Hot-water immersion test
16.5.8 Cathodic disbondment
16.5.9 Density
16.5.10 Rheometer curve — Oscillating disc
16.5.11 Tensile strength
16.5.12 Elongation at break
16.5.13 Tear strength
16.5.14 Electrical volume resistivity
16.5.15 Ozone resistance
16.5.16 Resistance to seawater
17 Fusion-bonded epoxy (FBE) powder coatings
17.1 Coating identification
17.2 Description of the coatings
17.3 Surface preparation
17.4 Application of the coatings
17.4.1 General
17.4.2 Transport and storage of epoxy powder
17.4.3 Heating
17.4.4 Application of epoxy powder
17.5 Testing of the applied coatings
17.5.1 General
17.5.2 Visual appearance
17.5.3 Thickness
17.5.4 Holiday detection
17.5.5 Adhesion
17.5.6 Degree of cure
17.5.7 Impact resistance
17.5.8 Cathodic disbondment
17.5.9 Hot-water immersion test
17.5.10 Flexibility
18 Liquid-applied coatings
18.1 Coating identification
18.2 Description of the coatings
18.2.1 Liquid epoxy — 18A
18.2.2 Liquid polyurethane — 18B
18.2.3 Fibre reinforced epoxy — 18C
18.2.4 Fibre reinforced vinyl ester — 18D
18.2.5 Cast polyurethane — 18E
18.3 Surface preparation
18.4 Application of the coatings
18.4.1 General
18.4.2 Heating
18.4.3 Liquid coatings application
18.5 Testing of the applied coatings
18.5.1 General
18.5.2 Thickness
18.5.3 Holiday detection
18.5.4 Adhesion
18.5.5 Impact resistance
18.5.6 Hardness
18.5.7 Cathodic disbondment
18.5.8 Hot-water immersion test
18.5.9 Flexibility
18.5.10 Indentation resistance
18.5.11 Specific electrical insulation resistance
18.5.12 Compressive strength
18.5.13 Electrical volume resistivity
18.5.14 Water absorption
19 Hot-applied polyolefin-based coatings
19.1 Coating identification
19.2 Description of the coatings
19.2.1 Flame-sprayed polypropylene — Type 19A
19.2.2 Hot-applied polypropylene tapes/sheets — Type 19B
19.2.3 Injection-moulded polypropylene — Type 19C
19.2.4 Flame-sprayed polyethylene — Type 19D
19.2.5 Hot-applied polyethylene tapes/sheets — Type 19E
19.2.6 Thickness of the epoxy primer
19.3 Surface preparation
19.4 Application of the coating
19.4.1 General
19.4.2 Heating
19.4.3 Application of the epoxy layer
19.4.4 Application of the chemically modified PP or PE
19.4.5 Application of the polyolefin top coat
19.5 Testing of the applied coatings
19.5.1 General
19.5.2 Thickness
19.5.3 Holiday detection
19.5.4 Peel strength
19.5.5 Adhesion to plant coating
19.5.6 Hot-water immersion test
19.5.7 Degree of cure
19.5.8 Cathodic disbondment
19.5.9 Impact resistance
19.5.10 Indentation resistance
19.5.11 Oxidation induction time
19.5.12 Flexibility
20 Thermal spray aluminium (TSA) coatings
20.1 Coating identification
20.2 Description of the coating
20.3 Qualification
20.4 Surface preparation
20.5 Application of the coating
20.5.1 General
20.5.2 Aluminium
20.5.3 Sealer
20.6 Testing of the applied coating
20.6.1 General
20.6.2 Visual inspection
20.6.3 TSA porosity
20.6.4 Coating thickness
20.6.5 Bend test
20.6.6 Pull-off adhesion test
20.6.7 Sealer penetration
Annex A (normative) Test programmes for procedure qualification trials (PQT), pre-production trials (PPT) or production testing
Annex B (normative) Inspection of thickness
Annex C (normative) Holiday detection test
Annex D (normative) Impact test
Annex E (normative) Indentation test
Annex F (normative) Specific electrical insulation resistance
Annex G (normative) Cathodic disbondment test
Annex H (normative) Peel strength test
Annex I (normative) Hot water immersion test
Annex J (normative) Lap shear strength
Annex K (normative) Drip resistance
Annex L (normative) Peel strength between layers
Annex M (normative) Thermal ageing resistance
Annex N (normative) Thermal stability test (Hot air ageing)
Annex O (normative) Bursting strength of reinforced backing
Annex P (normative) Thermal analysis of epoxy power and cured coating film (FBE)
Annex Q (normative) Adhesion test — Resistance to removal
Bibliography