Overview
CEN ISO/TS 23818-2:2022 (ISO/TS 23818-2:2021 adopted by CEN) defines an assessment of conformity scheme for resin‑fibre composite (RFC) products used in the rehabilitation of existing pipelines. The Technical Specification is intended to be included in a manufacturer’s quality plan and to support certification procedures. It applies specifically to cured‑in‑place pipe (CIPP) products - both non‑pressure liners and pressure liners classified as independent (Class A) or interactive (Class B) that do not rely on adhesion to the host pipeline.
Key topics and requirements
- Scope and applicability: CIPP RFC liners for pipeline rehabilitation (non‑pressure and pressure applications) in accordance with relevant system standards.
- Conformity framework: A scheme for integrating testing and inspection requirements into quality management and certification procedures.
- Testing and inspection types:
- Type testing (TT)
- Batch release tests (BRT)
- Process verification tests during installation (PVT‑I)
- CIPP product verification tests (CPVT)
- Audit tests (AT) and indirect tests
- Test records and documentation requirements
- Grouping and sampling: Guidance on grouping by size, wall strength and fittings to define test coverage and sampling plans.
- Annexed procedures and guidance:
- Annex A: Test procedures for non‑pressure drainage and sewerage rehabilitation
- Annex B: Test procedures for water supply and pressurised drainage/sewerage rehabilitation
- Annex C: Rules for new systems, design/material changes and product range extensions
- Annex D: Parameters for reduced long‑term tests (RLTT)
- Annex E: Informative summary tables of scheme requirements
Applications
- Standardizes how manufacturers and certification bodies verify RFC CIPP products before and after installation.
- Supports rehabilitation projects for underground drainage, sewerage and water supply networks where RFC CIPP liners are specified.
- Ensures consistent testing during manufacturing, batch release and on‑site curing/process verification to demonstrate conformity with system standards.
Who should use this standard
- Manufacturers of RFC CIPP systems implementing quality management and certification.
- Installers and contractors performing on‑site curing and process verification.
- Testing laboratories conducting type and batch tests.
- Certification bodies and auditors assessing conformity schemes.
- Asset owners / utilities, consulting engineers and specifiers seeking standardized acceptance criteria for pipeline rehabilitation products.
Related standards
Keywords: CEN ISO/TS 23818-2:2022, resin‑fibre composite RFC, CIPP, assessment of conformity, pipeline rehabilitation, plastics piping systems, ISO 11296, quality management, batch testing.