ISO 11298-1:2018

Overview

ISO 11298-1:2018 - Plastics piping systems for renovation of underground water supply networks (Part 1: General) defines the general requirements and test methods for plastics piping systems used to renovate existing underground water supply pipelines. It covers pipes and fittings as manufactured and the installed lining system (“as-installed” condition), but is not applicable to the existing host pipeline itself or to non-structural sprayed coatings and annular filler. This Part 1 document sets the common framework to be used together with technique-specific parts (e.g., close-fit, cured-in-place, continuous pipes, discrete pipes, adhesive-backed hoses, sprayed polymeric materials).

Key topics and technical requirements

ISO 11298-1:2018 addresses the core topics common to all renovation techniques, including:

• Materials: requirements for pipe, fitting and ancillary component materials and their effects on water quality.
• Pipes and fittings at the “M” stage: geometric, mechanical and physical characteristics, jointing and marking for components as manufactured.
• Installed lining system (“I” stage): verification of fitness for purpose after installation, including mechanical, physical and additional performance characteristics.
• Jointing and sealing: requirements for sealing rings and elastomeric joint materials (references include ISO 4633 and EN 681 series).
• Installation practice: preparatory work, storage, handling, equipment, safety, simulated installations, process-related inspection and testing, lining termination and reconnection, final inspection and documentation.
• Sampling and regional requirements: guidance on inspection sampling and adaptation to regional regulations or utility specifications.

The standard references normative documents (for example, ISO 4633 and EN 681 parts) for joint ring and elastomeric seal material requirements.

Applications and who uses it

ISO 11298-1 is intended for professionals involved in the renovation and rehabilitation of buried water supply networks:

• Municipal water utilities and network owners specifying renovation works
• Engineers and consultants developing rehabilitation plans
• Manufacturers of plastic pipes, fittings, linings and ancillary components
• Contractors and installers performing lining, relining and insertion techniques
• Inspectors and testing laboratories assessing “as-manufactured” and “as-installed” performance
• Regulators and procurement teams writing technical specifications

Typical renovation techniques applied with this standard include lining with continuous pipes, close-fit pipes, cured-in-place pipes, discrete pipes and inserted hoses.

Related standards

• ISO 11298 series (other parts cover specific renovation techniques)
• ISO 11296, ISO 11297, ISO 11299 (related system standards for drainage, sewerage and gas networks)
• ISO 4633 and EN 681 (elastomeric joint material requirements)

Keywords: ISO 11298-1:2018, plastics piping systems, renovation, underground water supply networks, lining systems, installed lining, pipes and fittings, test methods, rehabilitation.