EN 12889:2022

Trenchless construction and testing of drains and sewers

EN 12889:2022

Name:EN 12889:2022   Standard name:Trenchless construction and testing of drains and sewers
Standard number:EN 12889:2022   language:English language
Release Date:11-Oct-2022   technical committee:CEN/TC 165 - Waste water engineering
Drafting committee:CEN/TC 165/WG 10 - Installation of buried pipes for gravity drain and sewer systems   ICS number:23.040.05 - Pipeline and its parts for external sewage systems

SLOVENSKI STANDARD
01-januar-2023
Nadomešča:
SIST EN 12889:2000
Izvedba in preskušanje kanalov in drenaž brez izkopa
Trenchless construction and testing of drains and sewers
Grabenlose Verlegung und Prüfung von Abwasserleitungen und -kanälen
Mise en oeuvre sans tranchée et essais des branchements et collecteurs
d'assainissement
Ta slovenski standard je istoveten z: EN 12889:2022
ICS:
91.140.80 Drenažni sistemi Drainage systems
93.030 Zunanji sistemi za odpadno External sewage systems
vodo
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN 12889
EUROPEAN STANDARD
NORME EUROPÉENNE
October 2022
EUROPÄISCHE NORM
ICS 93.030; 23.040.05 Supersedes EN 12889:2000
English Version
Trenchless construction and testing of drains and sewers
Mise en oeuvre sans tranchée et essais des Grabenlose Verlegung und Prüfung von
branchements et collecteurs d'assainissement Abwasserleitungen und -kanälen
This European Standard was approved by CEN on 5 September 2022.

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this
European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references
concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN
member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by
translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management
Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2022 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 12889:2022 E
worldwide for CEN national Members.

Contents Page
European foreword . 4
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 5
4 General . 7
4.1 Technical principles . 7
4.2 Safeguarding design decisions . 7
5 Construction components and materials . 8
5.1 General . 8
5.2 Pipes and joints . 8
5.3 Manholes and inspection chambers . 8
5.4 Delivery, handling and transportation on site . 8
5.5 Storage . 8
5.6 Other materials . 9
6 Techniques . 9
6.1 Classification . 9
6.2 Unmanned techniques . 11
6.2.1 General . 11
6.2.2 Non-steerable techniques . 11
6.2.3 Steerable techniques. 18
6.3 Manned techniques . 23
6.3.1 General . 23
6.3.2 Non-steerable techniques . 24
6.3.3 Steerable techniques. 24
6.3.4 Other manned techniques . 28
7 Requirements of planning and construction . 29
7.1 General . 29
7.2 Basic evaluation, design and construction planning . 29
7.2.1 General . 29
7.2.2 Survey of existing structures and systems . 30
7.2.3 Ground and groundwater . 31
7.2.4 Minimum clear dimensions . 33
7.2.5 Subsidence, heaves, cover . 33
7.2.6 Layout of the line . 33
7.2.7 Tolerances . 33
7.2.8 Starting, intermediate and target pits . 33
7.2.9 Working face support . 34
7.2.10 Additional measures in water bearing ground . 34
7.2.11 Obstacles . 34
7.2.12 Soil conditioning . 34
7.2.13 Structural calculation . 35
7.2.14 Construction site arrangement . 35
7.3 Work preparation and construction . 35
7.3.1 General . 35
7.3.2 Starting, intermediate and target pits . 36
7.3.3 Exit and entry processes . 36
7.3.4 Static calculation of launch and reception shafts . 36
7.3.5 Overcut . 36
7.3.6 Recording and logging of jacking parameters . 36
7.3.7 Support of the working face . 37
7.3.8 Lubricant and supporting medium . 37
7.4 Avoidance of damage . 37
8 Inspection and testing of pipelines after installation . 38
8.1 General . 38
8.2 Visual inspection . 38
8.3 Leaktightness . 38
9 Qualifications . 38
Annex A (informative) Additional information about the different systems. 39
Annex B (informative) Guide to typical ranges of application regarding diameters and
lengths in suitable soil . 49
Annex C (informative) Guide to typical ranges of application for selected trenchless
techniques regarding diameters and lengths in suitable soils . 51
Annex D (informative) Trenchless insertion using a pipe plough system . 52
Bibliography . 53

European foreword
This document (EN 12889:2022) has been prepared by Technical Committee CEN/TC 165 “Waste water
engineering”, the secretariat of which is held by DIN.
This European Standard shall be given the status of a national standard, either by publication of an
identical text or by endorsement, at the latest by April 2023, and conflicting national standards shall be
withdrawn at the latest by April 2023.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN 12889:2000.
In comparison with the previous edition, the following changes have been made:
a) editorial and technical revision of the complete document;
b) modification of terms and definitions;
c) adaptation of the description of all methods of trenchless techniques and installation of pipelines;
d) Clause 7 “Requirements of planning and construction” was added.
Any feedback and questions on this document should be directed to the users’ national standards body.
A complete listing of these bodies can be found on the CEN website.
According to the CEN-CENELEC Internal Regulations, the national standards organisations of the
following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia,
Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland,
Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of North
Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and the United
Kingdom.
1 Scope
This document is applicable to the trenchless construction, trenchless replacement techniques and
testing of new drains and new sewers in the ground and usually operating as gravity or pressure
pipelines, formed using prefabricated pipes an
...

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