Overview
ISO 11297-1:2018 - Plastics piping systems for renovation of underground drainage and sewerage networks under pressure - Part 1: General - specifies the general requirements and test methods for plastics piping systems used to renovate underground drainage and sewerage networks that operate under hydraulic or pneumatic pressure. The standard covers pipes, fittings and the installed lining system (as installed), but is not applicable to the existing host pipeline itself nor to non‑structural sprayed coatings or annular filler.
Key topics and requirements
ISO 11297-1 sets out the fundamental framework common to all renovation technique families. Major technical topics include:
- Materials and material characteristics for pipes, fittings and ancillary components
- Geometric, mechanical and physical characteristics both for components as manufactured (“M” stage) and for the installed lining system (“I” stage)
- Jointing, marking and sampling requirements for components
- Installation practice and site requirements, including preparatory work, storage/handling, equipment and safety precautions
- Process-related inspection, testing and final inspection of the installed lining system, plus required documentation
- Regional requirements and additional characteristics relevant to the installed system
These topics are arranged in clauses that align with the other parts of the ISO 11297 renovation system to ensure consistency across techniques.
Applications and practical use
ISO 11297-1 is intended for use when planning, supplying, installing or certifying plastic lining solutions for pressurized underground drainage and sewerage rehabilitation. Practical applications include:
- Renovation projects for pressurized sewers, laterals and collector pipes using plastic linings or close‑fit/continuous/ discrete pipe techniques
- Specification of acceptance criteria and test regimes for as‑installed lining systems
- Supplier and manufacturer quality statements for pipes, fittings and ancillary components
- Site inspection, commissioning and maintenance documentation for rehabilitation contractors and utilities
Who uses it:
- Civil and municipal engineers, utilities and asset owners
- Rehabilitation contractors and installers
- Manufacturers of plastics pipes, fittings and lining systems
- Specifiers, consultants and conformity assessment bodies
Related standards
ISO 11297-1 is the general part of a system standard. Relevant complementary documents include:
- ISO 11297 (series) - Parts for specific renovation techniques (e.g., Part 2 continuous pipes, Part 3 close‑fit pipes, Part 4 cured‑in‑place, Part 5 discrete pipes, Part 6 adhesive‑backed hoses)
- ISO 11296, ISO 11298, ISO 11299 - System standards for renovation of non‑pressure drainage, water supply and gas networks respectively
For contractors, specifiers and manufacturers, ISO 11297-1 provides the baseline requirements and test-method framework needed to achieve durable, inspectable and certifiable renovation of pressurized underground drainage and sewerage networks.