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Standards Development
ISO/TC 138/SC 8 developed a suite of standards for the rehabilitation of existing pipelines for four
different application areas, split per technique family. Development took place jointly with CEN via the
Vienna Agreement.
This document provides a scheme for the assessment of conformity of PA-U products and assemblies
for the rehabilitation of existing pipelines, in accordance with ISO 11300-5, and intended to be included
in the manufacturer’s quality plan as part of the quality management system and for the establishment
of certification procedures.
It is recommended that the quality management system conforms to or is no less stringent than the
relevant requirements to EN ISO 9001.This document provides a scheme for the assessment of
conformity of PA-U products and assemblies for the rehabilitation of existing pipelines, in accordance
with ISO 11300-5, and intended to be included in the manufacturer’s quality plan as part of the quality
management system and for the establishment of certification procedures.
NOTE In order to help the reader, summary tables of overall scheme requirements are provided in
Annex C.
ISO/TC 138/SC 8 developed a suite of standards for the rehabilitation of existing pipelines for four
different application areas, split per technique family. Development took place jointly with CEN via the
Vienna Agreement.
As such, currently 19 system standards have been published, from which the great majority were up for Systematic Review in 2023.
Within the WGs of SC 8, it was proposed to merge the existing system standards to reduce the extent
of duplication across the standards and to allow for easy maintenance of the standards in future. This
merging was proposed to be done per pipe material, for drainage, sewerage and water supply
applications on the one hand and gas application on the other hand.
In previous WG 4 activity report (WG 4 N046) it was reported that at the 4th WG 4 meeting in Kyoto
comments received at ad-hoc ballot from US, Germany, Japan were discussed and some editorial
changes were considered. US and Germany proposed for WG 4 to consider including PA 11 and PA12
pipes to the scope of ISO 11299 which will be considered for a future edition subject to receipt of
related technical information. The US and German proposal was based on different “Letters of Support
(LoS)” from the industry.
ISO 11301 series will merge different rehab standards including ISO 11299, where for the
consideration of PA-U is already initiated by developing a part 5 (actual WD stage).
Following up on this, SC 8/WG 1 is now ready to proceed and proposes to activate a new work item for PWI /TS 23818-5, “Assessment of conformity of plastics piping systems for the rehabilitation of existing pipelines — Part 3: Unplasticized polyamide (PA-U) material”.
It is requested to activate PWI/TS 23818-3 to allow further development.
SC 8 secretariat endorses the above-mentioned proposal to proceed PWI/TS 23818-3 to NP ballot.
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