ISO 18797-1:2016
Petroleum, petrochemical and natural gas industries — External corrosion protection of risers by coatings and linings — Part 1: Elastomeric coating systems-polychloroprene or EPDM
ISO 18797-1:2016 specifies the minimum requirements for materials selection, surface preparation, application, inspection, testing, qualification and acceptance criteria of external coating for steel risers pipes used in the splash zone, their field joints and clamps/guides, using an elastomeric protective coating based on polychloroprene, EPDM or equivalent. This is applicable for new construction and repair of applied pipes before installation. Maintenance requirements and field repairs are covered in ISO 18797-2.
ISO 18797-1:2016 also specifies the requirements for transportation, handling and storage of riser pipes before and after surface preparation and coating application.
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Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Abbreviated terms
5 Pre-work requirements
5.1 General
5.2 Health, safety and environmental (HSE)
5.3 Qualification of coating/lining application and inspection personnel
6 Materials
6.1 General requirements
6.2 Material requirements
6.3 Materials packing, handling and storage
6.4 Coating materials
7 Bare pipes transportation, handling and storage
7.1 Transportation and handling of pipes
7.2 Storage of pipes
8 Surface preparation
8.1 General
8.2 Pipe imperfections/damages removal
8.3 Contaminants removal
8.4 Abrasive blast cleaning
9 Coating application for risers
9.1 General
9.2 Priming and coating on abrasive blast-cleaned surface
9.3 Polychloroprene or EPDM application and vulcanization
9.4 Manual coating application on clamps, guides, bolt holes, inner sections of flanges and pipe section used for modifications at worksites
9.5 Coating application of field joints
9.6 Coating repair
10 Inspection and testing
10.1 General
10.2 Testing of elastomer properties
10.2.1 General
10.2.2 Cure and hardness
10.2.3 Specific gravity
10.2.4 Rheological properties
10.2.5 Tensile strength, tear strength and elongation at break
10.2.6 Compression set
10.2.7 Abrasion resistance
10.2.8 Ozone resistance
10.2.9 Adhesion
10.2.10 Resistance to seawater
10.2.11 Thermal conductivity
10.2.12 Vulcanization characteristics (rotorless curemeters)
10.2.13 Cathodic disbondment
10.2.14 Volume resistivity
10.3 Inspection/testing of coated pipes
10.3.1 Visual inspection
10.3.2 Holiday detection
10.3.3 Thickness test
10.3.4 Adhesion (bond) test
10.3.5 Hardness testing
10.3.6 Ultrasonic inspection
10.3.7 Sound testing
10.3.8 Rejection
10.4 Inspection and testing of field joint coating
10.5 Test reports and certificate of compliance
11 Coating damage/defect repair
11.1 Defect acceptance criteria
11.2 Repair procedures
12 Handling and stacking of coated pipes
13 Quality requirements
14 Documentation
Annex A (informative) Contents in a batch certificate
Annex B (normative) Physical properties of polychloroprene or EPDM elastomer
Annex C (normative) Riser pipe external coating progress chart
Bibliography
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Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Abbreviated terms
5 Pre-work requirements
5.1 General
5.2 Health, safety and environmental (HSE)
5.3 Qualification of coating/lining application and inspection personnel
6 Materials
6.1 General requirements
6.2 Material requirements
6.3 Materials packing, handling and storage
6.4 Coating materials
7 Bare pipes transportation, handling and storage
7.1 Transportation and handling of pipes
7.2 Storage of pipes
8 Surface preparation
8.1 General
8.2 Pipe imperfections/damages removal
8.3 Contaminants removal
8.4 Abrasive blast cleaning
9 Coating application for risers
9.1 General
9.2 Priming and coating on abrasive blast-cleaned surface
9.3 Polychloroprene or EPDM application and vulcanization
9.4 Manual coating application on clamps, guides, bolt holes, inner sections of flanges and pipe section used for modifications at worksites
9.5 Coating application of field joints
9.6 Coating repair
10 Inspection and testing
10.1 General
10.2 Testing of elastomer properties
10.2.1 General
10.2.2 Cure and hardness
10.2.3 Specific gravity
10.2.4 Rheological properties
10.2.5 Tensile strength, tear strength and elongation at break
10.2.6 Compression set
10.2.7 Abrasion resistance
10.2.8 Ozone resistance
10.2.9 Adhesion
10.2.10 Resistance to seawater
10.2.11 Thermal conductivity
10.2.12 Vulcanization characteristics (rotorless curemeters)
10.2.13 Cathodic disbondment
10.2.14 Volume resistivity
10.3 Inspection/testing of coated pipes
10.3.1 Visual inspection
10.3.2 Holiday detection
10.3.3 Thickness test
10.3.4 Adhesion (bond) test
10.3.5 Hardness testing
10.3.6 Ultrasonic inspection
10.3.7 Sound testing
10.3.8 Rejection
10.4 Inspection and testing of field joint coating
10.5 Test reports and certificate of compliance
11 Coating damage/defect repair
11.1 Defect acceptance criteria
11.2 Repair procedures
12 Handling and stacking of coated pipes
13 Quality requirements
14 Documentation
Annex A (informative) Contents in a batch certificate
Annex B (normative) Physical properties of polychloroprene or EPDM elastomer
Annex C (normative) Riser pipe external coating progress chart
Bibliography