EN ISO 21809-3:2016

European foreword
Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Symbols and abbreviated terms
5 General requirements
6 Information to be supplied by the purchaser
7 Application procedures and qualification
8 Classification of field joint coatings
9 General requirements for surface preparation,
   coating application, testing and repair
10 Hot-applied bituminous tape coatings
11 Petrolatum and wax-based tape coatings
12 Cold-applied polymeric tape coatings
13 Non-crystalline low-viscosity polyolefin based coatings
14 Coatings based on heat-shrinkable materials
15 Hot-applied microcrystalline wax coatings
16 Elastomeric coatings
17 Fusion-bonded epoxy (FBE) powder coatings
18 Liquid-applied coatings
19 Hot-applied polyolefin-based coatings
20 Thermal spray aluminium (TSA) coatings
Annex A (normative) - Test programmes for procedure
        qualification trials (PQT), preproduction
        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

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.