Overview
CEN ISO/TS 23818-1:2026 specifies a comprehensive scheme for the assessment of conformity of plastics piping systems made from polyethylene (PE), used in the rehabilitation of existing pipelines. Developed by the European Committee for Standardization (CEN) in collaboration with ISO, this technical specification ensures that PE products and assemblies for pipeline rehabilitation meet stringent quality and certification criteria. The document is intended to be integrated into manufacturers' quality plans as part of their overall quality management system, supporting dependable product certification and market acceptance within Europe and globally.
Key Topics
- Assessment of Conformity: The standard outlines systematic procedures for verifying that PE piping systems used in pipeline rehabilitation comply with both product and process requirements.
- Quality Management: It emphasizes integrating assessment schemes within manufacturers’ existing quality management systems, referencing ISO 9001 practices.
- Testing and Inspection: Detailed processes for type testing, batch release testing, process verification, audit, and indirect testing are established for both the manufacturing (“M” stage) and as-installed (“I” stage) conditions.
- Grouping and Sampling: The specification classifies pipe and fitting sizes and types for representative testing, ensuring comprehensive coverage across product lines.
- Documentation and Traceability: Record-keeping for conformity assessment is required for at least ten years, ensuring traceability and accountability.
Applications
- Pipeline Rehabilitation: The standard applies to PE piping components and assemblies designed for the rehabilitation of underground pipelines, including drains, sewers, water supply, and gas networks.
- Certification Procedures: CEN ISO/TS 23818-1:2026 provides a foundation for establishing certification procedures, instilling confidence in product reliability and regulatory compliance.
- Manufacturing Quality Assurance: Manufacturers use this standard to structure quality plans, process control, and product testing regimes as part of their regular quality management activities.
- Market Access: Adhering to the scheme facilitates easier entry into European and international markets by demonstrating compliance with recognized conformity assessment requirements.
Practical Industries and Stakeholders
- Municipal water and wastewater utilities
- Gas distribution network operators
- Pipeline contractors and rehabilitation specialists
- PE pipe and fitting manufacturers and suppliers
- Certification and inspection bodies focused on plastics piping systems
Related Standards
CEN ISO/TS 23818-1:2026 works in conjunction with several recognized international standards:
- ISO 11300-1: Piping systems for rehabilitation of underground drains, sewers, and water supply networks – Polyethylene (PE).
- ISO 11301-1: Piping systems for rehabilitation of underground gas supply networks – Polyethylene (PE).
- ISO 4427 series: Plastics piping systems for water supply and sewerage under pressure – Polyethylene (PE).
- ISO 4437 series: Plastics piping systems for the supply of gaseous fuels – Polyethylene (PE).
- ISO 11295: Classification and overview of plastics piping systems for pipeline rehabilitation.
- ISO 9001: Quality management systems – Requirements.
- For European markets, relevant EN standards (such as EN 12201, EN 1555, EN 12666-1) may be used as equivalents where applicable.
Summary
CEN ISO/TS 23818-1:2026 is invaluable for ensuring high-quality, certified PE piping systems in pipeline rehabilitation projects. By adopting its structured conformity assessment schemes, manufacturers, utilities, and certification bodies can systematically demonstrate and maintain high standards of product safety, reliability, and compliance across a broad spectrum of applications in water supply, wastewater, and gas distribution. Integrating this standard helps drive industry-wide best practices and supports consistent market access throughout Europe and internationally.