Overview
ISO 24817:2017 provides requirements and recommendations for the qualification, design, installation, testing and inspection of externally applied composite repair systems for corroded or damaged pipework, pipelines, tanks and vessels used in the petroleum, petrochemical and natural gas industries. The standard ensures composite repairs meet specified performance criteria and covers both normative requirements and informative guidance, including annexes for data sheets, qualification and installer criteria.
Key Topics and Technical Requirements
- Repair feasibility assessment - evaluates whether a composite repair is appropriate for the given defect and service conditions.
- Repair classification and design lifetime - defines repair classes and expected service life used for design and validation.
- Required data for design - includes original equipment design data, maintenance and operational histories, service condition data and repair system qualification data.
- Design methodology - covers environmental compatibility, design temperature effects, substrate load-sharing approaches, laminate allowable strains, and specific provisions for through‑wall (type B) and partial‑wall (type A) defects.
- Axial extent and optional design considerations - guidance on repair length, dents, gouges, fretting, delamination and other defect forms.
- Qualification and re‑qualification - performance testing requirements and criteria for initial system qualification and subsequent re‑validation.
- Installation and installer qualification - storage, documentation (method statements, work packs), installer competency and procedural controls for repair application.
- Testing and inspection - permitted defects within the repair system, inspection methods, maintenance and remedial options, plus system testing and decommissioning guidance.
- Normative and informative annexes - include design data sheets, qualification data, spool survival tests, measurement methods, installer qualification and integrity management guidance.
Practical Applications and Users
ISO 24817 is intended for:
- Plant and asset owners seeking compliant composite repair solutions for pipework, tanks and vessels.
- Design and engineering contractors developing repair designs and specifications.
- Repair system suppliers and manufacturers for product qualification and performance claims.
- Installation contractors and maintenance teams for standardized procedures and installer qualification.
- Inspection bodies, certifying authorities and integrity engineers responsible for testing, inspection and life‑cycle management.
Practical benefits include reduced downtime, documented repair performance, consistent installer competency, and traceable inspection and maintenance workflows.
Related Standards
ISO 24817 references materials and test standards such as ISO 75-3 and ISO 527 (parts 1, 4) for material behaviour and tensile properties. It was developed by ISO/TC 67 (Materials, equipment and offshore structures for petroleum, petrochemical and natural gas industries) and complements other industry integrity and fitness‑for‑service guidance.
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