Overview
EN ISO 24817:2017 - Petroleum, petrochemical and natural gas industries - Composite repairs for pipework - Qualification and design, installation, testing and inspection (ISO 24817:2017) provides requirements and recommendations for the external application of composite repair systems to corroded or damaged pipework, pipelines, tanks and vessels. Endorsed by CEN, this standard covers the full life‑cycle of composite repairs: system qualification, repair design, installation, testing, inspection and decommissioning.
Key topics and technical requirements
The standard addresses technical topics essential to safe, reliable composite repairs for pipework in oil & gas and petrochemical environments:
- Qualification and design: requirements for repair feasibility assessment, repair class, and establishing a design lifetime. Designers must gather original equipment data, service histories and repair system qualification data.
- Design methodologies: multiple design approaches are described, including substrate load‑sharing, laminate allowable strains, and allowable stresses based on performance testing. Temperature and environmental compatibility are explicitly addressed.
- Defect types: guidance for repairs to different defect classes, including non‑through‑wall (type A) and through‑wall (type B) defects, plus special cases (dents, gouges, fretting, delamination).
- Installation and workmanship: storage, documentation (method statement, work pack), installer qualifications, installation procedures, live (hot) repairs and environmental controls.
- Testing and inspection: allowable defects in the repair system, inspection methods, performance testing (including impact and degradation measurements), and maintenance/remedial options.
- Re‑qualification and decommissioning: procedures for re‑validating repairs and safe end‑of‑life removal.
- Normative annexes: design data sheet, qualification data, short‑term spool survival test and measurement methods for performance and impact testing are included as annexes.
Practical applications
EN ISO 24817:2017 is used to:
- Qualify composite repair systems for onshore and offshore piping, tanks and pressure equipment.
- Define repair designs that meet operational reliability requirements and design lifetime expectations.
- Standardize installation practices and inspection regimes for repaired pipework.
- Support maintenance and integrity management programs in petroleum, petrochemical and natural gas facilities.
Typical use cases: emergency repairs to corroded pipelines, planned remediation of defects, field installation of composite sleeves, and validation of repair products by manufacturers.
Who should use this standard
- Asset owners and integrity engineers in oil, gas and petrochemical sectors
- Repair system manufacturers and suppliers
- Inspection and maintenance contractors
- Design engineers and offshore/onshore operations teams
- Certification and testing laboratories
Related standards
EN ISO 24817:2017 was prepared by ISO/TC 67 (materials, equipment and offshore structures for petroleum, petrochemical and natural gas industries) and adopted by CEN. For full technical details, design formulas and test procedures consult the complete standard and its normative annexes.
