EN 10290:2002

Foreword
1 Scope
2 Normative references
3 Terms, definitions and symbols
   3.1 Terms and definitions
   3.2 Symbols
4 Coating materials
   4.1 General
   4.2 Technical specification
   4.3 Packaging
   4.4 Quality assurance
5 Information to be supplied by the purchaser
   5.1 Mandatory
   5.2 Options to be indicated by the purchaser
6 Application of the coating
   6.1 Surface preparation
   6.2 Composition of the coating
7 Requirements of the applied coating
   7.1 General
   7.2 Minimum dry thickness of the coating system
   7.3 Hardness Shore "D"
   7.4 Appearance and continuity
   7.5 Cut back at the ends
   7.6 Holiday detection
   7.7 Impact resistance
   7.8 Adhesion test - Resistance to removal
   7.9 Adhesion test - Pull-off method
   7.10 Cathodic disbondment
   7.11 Specific electrical insulation resistance
   7.12 Adhesion test after immersion in tap water
   7.13 Indentation resistance
   7.14 Thermal ageing
   7.15 Flexibility
   7.16 Infra-red scan
   7.17 Elongation
8 Inspection
   8.1 General
   8.2 Documents
   8.3 Sampling
   8.4 Nature and frequency of testing and control
   8.5 Retests
9 Repairs
10 Marking
11 Handling, transportation and storage
   11.1 Handling
   11.2 Transportation to the storage area
   11.3 Storage
   11.4 Loading of components for delivery
Annex A (normative) Dry thickness of the coating system
   A.1 General
   A.2 Apparatus
   A.3 Procedure
   A.4 Results
Annex B (normative) Holiday detection test
   B.1 General
   B.2 Apparatus
   B.3 Procedure
   B.4 Results
Annex C (normative) Impact test
   C.1 General
   C.2 Apparatus
   C.3 Procedure
   C.4 Results
Annex D (normative) Adhesion test - Resistance to removal
   D.1 General
   D.2 Apparatus
   D.3 Procedure
   D.4 Results
Annex E (normative) Cathodic disbondment test
   E.1 Principle
   E.2 Apparatus
   E.3 Sampling
   E.4 Procedure
   E.5 Investigation procedure
   E.6 Results
Annex F (normative) Specific electrical insulation resistance test
   F.1 Test at ambient temperature ((23 +/- 2) degree C)
   F.2 Test at maximum service temperature
Annex G (normative) Adhesion test after immersion tap water
   G.1 General
   G.2 Apparatus
   G.3 Procedure
   G.4 Results
Annex H (normative) Indentation test
   H.1 General
   H.2 Apparatus
   H.3 Procedure
   H.4 Results
Annex J (normative) Thermal ageing
   J.1 General
   J.2 Apparatus
   J.3 Sampling
   J.4 Procedure
   J.5 Results
Annex K (normative) Flexibility
   K.1 General
   K.2 Apparatus
   K.3 Procedure
   K.4 Results
Annex L (normative) Types of inspection documents
Bibliography

The standard defines the requirements of liquid applied external coating, polyurethane (PUR) and polyurethane-modified (PUR-MOD), for the corrosion protection of tubes and pipeline fittings.The coating in this standard can be applied to longitudinally or spirally welded and to seamless steel tubes and fittings used for the construction of pipelines for conveying liquids or gases.In accordance with the elongation properties, if the component has to be cold bent the coating shall be applied after bending unless otherwise approved by the purchaser.The coating shall consist normally of one layer of liquid product, applied by brush or by an airless spray technique.Other application methods can be recommended by the product manufacturer, in accordance with the kind of product (spatula, injection, spreading, etc.).This coating can be used for the protection of buried or submerged steel tubes for service at the following temperatures and with two thickness classes A (1000 *m) and B (1500 *m) based on the following combination.Lower thickness can be agreed between the coating manufacturer and the purchaser.- type 1:- 20 °C to 40 °C, thickness class A or B- type 2:- 20 °C to 60 °C, thickness class B- type 3:- 20 °C to 80 °C, thickness class BOther temperatures can be agreed; in this case, tests shall be carried out at the required temperature.In this standard the word components is used for tubes and fittings.Frequencies of tests on fittings shall be agreed by the parties at the ordering stage.Components coated with these types of coatings may be further protected by means of cathodic protection.