ISO 18797-2:2021 PDF

Petroleum, petrochemical and natural gas industries — External corrosion protection of risers by coatings and linings — Part 2: Maintenance and field repair coatings for riser pipes

Название (английский):

ISO 18797-2:2021

Petroleum, petrochemical and natural gas industries — External corrosion protection of risers by coatings and linings — Part 2: Maintenance and field repair coatings for riser pipes

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 65
Дата публикации:: 13 сентября 2021 г.
Издание:: ISO IS 18797 edition 1 version 1
ICS:: 75.180.10

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Описание (английский):

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.

Технические детали

Технический комитет: ISO/TC 67 - Materials, equipment and offshore structures for petroleum, petrochemical and natural gas industries
SKU: ISO 18797-2:2021

Abstract

Overview

ISO 18797-2:2021 specifies selection criteria and minimum requirements for maintenance and field-repair protective coating systems for riser pipes exposed to splash-zone conditions in the petroleum, petrochemical and natural gas industries. The standard covers field-applied coatings used to repair or maintain existing riser coatings, defines qualification and inspection expectations, and describes test programs and coating types suited for offshore and nearshore riser corrosion protection. It does not cover techniques to restore structural integrity of risers or additional mechanical protection materials. New shop-applied riser coatings are addressed in ISO 18797-1.

Key Technical Topics and Requirements

Scope and applicability: Field repair and maintenance of external riser coatings in splash-zone environments.
Coating types: Detailed guidance for common field systems such as non-crystalline low-viscosity polyolefin coatings, petrolatum/wax tape wrap systems, and polychloroprene-based elastomeric coatings.
Selection criteria: Factors influencing coating choice including substrate wetness, soluble-salt contamination, dust and oil contamination, compatibility with existing coatings, access/space and time constraints, and environmental conditions (temperature, humidity).
Qualification and procedures: Requirements for documented application and inspection procedures (APS and ITP), procedure qualification trials, pre-production trials, and production testing.
Inspection, testing and traceability: Mandatory inspection documentation and traceability, with test programs covering thickness measurement, holiday detection, adhesion, cathodic disbondment resistance, impact and indentation resistance, ageing/weathering and hot-water immersion behavior, electrical insulation properties, and layer peel/overlap integrity.
Operational performance: Guidance on mechanical load resistance, interaction with cathodic protection systems, and long-term resistance to weathering and water exposure.

Practical Applications and Users

ISO 18797-2 is intended for:

Offshore and onshore asset integrity engineers planning and .

Abstract

Overview

Key Technical Topics and Requirements

Scope and applicability: Field repair and maintenance of external riser coatings in splash-zone environments.
Coating types: Detailed guidance for common field systems such as non-crystalline low-viscosity polyolefin coatings, petrolatum/wax tape wrap systems, and polychloroprene-based elastomeric coatings.
Selection criteria: Factors influencing coating choice including substrate wetness, soluble-salt contamination, dust and oil contamination, compatibility with existing coatings, access/space and time constraints, and environmental conditions (temperature, humidity).
Qualification and procedures: Requirements for documented application and inspection procedures (APS and ITP), procedure qualification trials, pre-production trials, and production testing.
Inspection, testing and traceability: Mandatory inspection documentation and traceability, with test programs covering thickness measurement, holiday detection, adhesion, cathodic disbondment resistance, impact and indentation resistance, ageing/weathering and hot-water immersion behavior, electrical insulation properties, and layer peel/overlap integrity.
Operational performance: Guidance on mechanical load resistance, interaction with cathodic protection systems, and long-term resistance to weathering and water exposure.

Practical Applications and Users

ISO 18797-2 is intended for:

Offshore and onshore asset integrity engineers planning and .

ISO 18797-2:2021 PDF

Технические детали

Abstract

Overview

Key Technical Topics and Requirements

Practical Applications and Users

Abstract

Overview

Key Technical Topics and Requirements

Practical Applications and Users

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