prEN ISO 11295

SLOVENSKI STANDARD
01-maj-2025
Cevni sistemi iz polimernih materialov za obnovo cevovodov - Razvrstitev in
pregled strateških, taktičnih in operativnih dejavnosti (ISO/DIS 11295:2025)
Plastics piping systems used for the rehabilitation of pipelines - Classification and
overview of strategic, tactical and operational activities (ISO/DIS 11295:2025)
Rohrleitungssysteme aus Kunststoff für die Sanierung von Rohrleitungen -
Klassifizierung und Überblick über strategische, taktische und operative Aktivitäten
(ISO/DIS 11295:2025)
Systèmes de canalisation en plastique destinés à la réhabilitation des réseaux enterrés -
Classification et vue d’ensemble des activités stratégiques, tactiques et opérationnelles
(ISO/DIS 11295:2025)
Ta slovenski standard je istoveten z: prEN ISO 11295
ICS:
23.040.01 Deli cevovodov in cevovodi Pipeline components and
na splošno pipelines in general
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

DRAFT
International
Standard
ISO/DIS 11295
ISO/TC 138/SC 8
Plastics piping systems used for
Secretariat: JISC
the rehabilitation of pipelines —
Voting begins on:
Classification and overview of
2025-03-06
strategic, tactical and operational
Voting terminates on:
activities
2025-05-29
Systèmes de canalisation en plastique destinés à la réhabilitation
des réseaux enterrés — Classification et vue d’ensemble des
activités stratégiques, tactiques et opérationnelles
ICS: 23.040.20
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Reference number
ISO/DIS 11295:2025(en)
DRAFT
ISO/DIS 11295:2025(en)
International
Standard
ISO/DIS 11295
ISO/TC 138/SC 8
Plastics piping systems used for
Secretariat: JISC
the rehabilitation of pipelines —
Voting begins on:
Classification and overview of
strategic, tactical and operational
Voting terminates on:
activities
Systèmes de canalisation en plastique destinés à la réhabilitation
des réseaux enterrés — Classification et vue d’ensemble des
activités stratégiques, tactiques et opérationnelles
ICS: 23.040.20
THIS DOCUMENT IS A DRAFT CIRCULATED
FOR COMMENTS AND APPROVAL. IT
IS THEREFORE SUBJECT TO CHANGE
AND MAY NOT BE REFERRED TO AS AN
INTERNATIONAL STANDARD UNTIL
PUBLISHED AS SUCH.
This document is circulated as received from the committee secretariat.
IN ADDITION TO THEIR EVALUATION AS
BEING ACCEPTABLE FOR INDUSTRIAL,
© ISO 2025
TECHNOLOGICAL, COMMERCIAL AND
USER PURPOSES, DRAFT INTERNATIONAL
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
STANDARDS MAY ON OCCASION HAVE TO
ISO/CEN PARALLEL PROCESSING
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
BE CONSIDERED IN THE LIGHT OF THEIR
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
POTENTIAL TO BECOME STANDARDS TO
WHICH REFERENCE MAY BE MADE IN
or ISO’s member body in the country of the requester.
NATIONAL REGULATIONS.
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Published in Switzerland Reference number
ISO/DIS 11295:2025(en)
ii
ISO/DIS 11295:2025(en)
Contents Page
Foreword .v
Introduction .vi
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
3.1 General terms .2
3.2 Terms related to techniques .3
3.3 Terms related to services conditions .5
4 Abbreviated terms . 5
5 Pipeline rehabilitation process . 6
6 Investigation and condition assessment of the existing pipeline . 7
6.1 Performance criteria .7
6.1.1 General .7
6.1.2 Hydraulic requirements .8
6.1.3 Structural requirements .8
6.1.4 Environmental requirement .8
6.1.5 Operational requirements .9
6.2 Investigation of performance .9
6.2.1 General .9
6.2.2 Hydraulic investigation .10
6.2.3 Structural investigation . .10
6.2.4 Environmental investigation . .11
6.2.5 Operational investigation .11
6.3 Condition assessment .11
6.4 Risk analysis . 12
6.5 Control measures . 12
7 Classification and characteristics of rehabilitation techniques .13
7.1 Overview . 13
7.2 Classification of renovation techniques . 15
7.2.1 General . 15
7.2.2 Lining with continuous pipes . 15
7.2.3 Lining with close-fit pipes .17
7.2.4 Lining with cured-in-place pipes . 20
7.2.5 Lining with discrete pipes .24
7.2.6 Lining with adhesive-backed hoses. 28
7.2.7 Lining with spirally-wound pipes . 29
7.2.8 Lining with pipe segments .32
7.2.9 Lining with a rigidly anchored plastics inner layer . 33
7.2.10 Lining with sprayed polymeric materials . . 35
7.2.11 Lining with inserted hoses .37
7.3 Classification of trenchless replacement techniques . 38
7.3.1 General . 38
7.3.2 Pipe bursting. 39
7.3.3 Pipe removal .41
7.3.4 Horizontal directional drilling (HDD) . 44
7.3.5 Impact moling .47
7.3.6 Pipe jacking . 49
8 Selection of rehabilitation techniques .52
8.1 General .52
8.2 Pipeline system layout .52
8.3 Hydraulic performance . 53
8.4 Structural performance . 54

iii
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