EN 14654-2:2021

SLOVENSKI STANDARD
01-marec-2021
Nadomešča:
SIST EN 14654-2:2013
Sistemi za odvod odpadne vode in kanalizacijo zunaj stavb - Upravljanje in nadzor
aktivnosti - 2. del: Sanacija
Drain and sewer systems outside buildings - Management and control of activities - Part
2: Rehabilitation
Entwässerungssysteme außerhalb von Gebäuden - Management und Überwachung von
Maßnahmen - Teil 2: Sanierung
Réseaux d'évacuation et d'assainissement à l'extérieur des bâtiments - Gestion et
contrôle des activités opérationnelles - Partie 2: Réhabilitation
Ta slovenski standard je istoveten z: EN 14654-2:2021
ICS:
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 14654-2
EUROPEAN STANDARD
NORME EUROPÉENNE
January 2021
EUROPÄISCHE NORM
ICS 93.030 Supersedes EN 14654-2:2013
English Version
Drain and sewer systems outside buildings - Management
and control of activities - Part 2: Rehabilitation
Réseaux d'évacuation et d'assainissement à l'extérieur Entwässerungssysteme außerhalb von Gebäuden -
des bâtiments - Gestion et contrôle des activités Management und Überwachung von Maßnahmen - Teil
opérationnelles - Partie 2: Réhabilitation 2: Sanierung
This European Standard was approved by CEN on 6 December 2020.

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, Turkey 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
© 2021 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 14654-2:2021 E
worldwide for CEN national Members.

Contents  Page
European foreword . 3
1 Scope . 4
2 Normative references . 4
3 Terms and definitions . 4
4 General . 6
5 Integrated sewer system management planning . 6
6 Preparation of rehabilitation programme . 6
6.1 Introduction . 6
6.2 Review of the rehabilitation plan . 6
6.3 Investigation . 7
6.4 Assessment . 7
6.5 Development of the programme . 8
7 Preparation of the project specification . 14
7.1 Introduction . 14
7.2 Review of the project description and project objectives . 14
7.3 Investigation . 14
7.4 Assessment . 14
7.5 Drafting the project specification. 15
7.6 Performance indicators . 18
8 Implementation of projects . 19
8.1 Introduction . 19

8.2 Rehabilitation report . 19
9 Measurement of conformity . 19
9.1 Measuring conformity with the project specification . 19
9.2 Non-conformities . 20
9.3 Post project appraisal . 20
10 Review of plan and programme . 20
Bibliography . 21

European foreword
This document (EN 14654-2:2021) has been prepared by Technical Committee CEN/TC 165
“Wastewater 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 July 2021, and conflicting national standards shall be
withdrawn at the latest by July 2021.
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 14654-2:2013.
The changes to the text in this document are largely editorial and relate to the separation of the
duplicated text. Annex A has also been deleted as this is now incorporated into EN 752:2017. The
technical changes made is the addition of 7.5.5 on detailed design of the optimal solution.
EN 14654 consists of the following parts, under the general title Drain and sewer systems outside
buildings — Management and control of activities:
— Part 1: General
— Part 2: Rehabilitation; (the present document)
— Part 3: Drain and sewer cleaning
— Part 4: Control of inputs from users
Other parts, dealing with other activities, may be added later.
In drafting this part of EN 14654, account has been taken of other available standards, in particular
EN 752, Drain and sewer systems outside buildings and EN 13508 Investigation and assessment of drain
and sewer systems outside buildings.
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, Turkey and the
United Kingdom.
1 Scope
This document establishes requirements for the management and control of activities in drain and
sewer systems outside buildings and specifies requirements for development and implementation of
work programmes, and the selection of techniques.
This document covers the management and control of rehabilitation activities.
It is applicable to drain and sewer systems from the point where wastewater leaves a building, roof
drainage system, or paved area, to the point where it is discharged into a wastewater treatment plant or
receiving water body.
Drains and sewers below buildings are included provided that they do not form part of the drainage
system of the building.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments) applies.
EN 752:2017, Drain and sewer systems outside buildings — Sewer system management
EN 13508-1:2012, Investigation and assessment of drain and sewer systems outside buildings — Part: 1:
General Requirements
EN 14654-1:2021, Drain and sewer systems outside buildings - Management and control of activities —
Part 1: General
EN 16323:2014, Glossary of wastewater engineering terms
3 Terms and definitions
For the purposes of this document, the terms and definitions given in EN 16323:2014, EN 14654-1:
2021 and the following apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https://www.iso.org/obp
— IEC Electropedia available at http://www.electropedia.org/
NOTE: Certain key definitions from EN 16323:2014 have been repeated below for clarity. The following
additional terms used in this document are defined in EN 16323:2014.
— drain
— sewer
— receiving water body
— surface receiving water body
— sewer system
— wastewater treatment plant
3.1
extraneous water
unwanted flow in a drain or sewer system
[SOURCE: EN 16323:2014, definition 2.1.4.7]
3.2
inspection chamber
chamber with a removable cover constructed on a drain or sewer that permits the introduction of
cleaning and inspection equipment from surface level, but does not provide access for personnel
[SOURCE: EN 16323:2014, definition 2.2.4.13]
3.3
maintenance
routine work undertaken to ensure the continuing performance of an asset
[SOURCE: EN 16323:2014, definition 2.1.6.2]
3.4
manhole
chamber with a removable cover constructed on a drain or sewer to permit entry by personnel
[SOURCE: EN 16323:2014, definition 2.2.4.15]
3.5
pipeline section
continuous section of drain or sewer between two adjacent nodes
[SOURCE: EN 16323:2014, definition 2.2.3.7]
3.6
rehabilitation
measures for restoring or upgrading the performance of existing systems, including renovation, repair
and replacement
[SOURCE: EN 16323:2014, definition 2.1.6.3]
3.7
renovation
work incorporating all or part of the original fabric of the drain or sewer by means of which its current
performance is improved
[SOURCE: EN 16323:2014, definition 2.1.6.4]
3.8
repair
rectification of local damage
[SOURCE: EN 16323:2014, definition 2.1.6.5]
3.9
replacement
construction of a new drain or sewer, on or off the line of an existing drain or sewer, the function of the
new drain or sewer incorporating that of the old
[SOURCE: EN 16323:2014, definition 2.2.1.7]
3.10
wastewater
water composed of any combination of water discharged from domestic, industrial or commercial
premises, surface run-off and accidentally any sewer infiltration water
[SOURCE: EN 16323:2014, definition 2.3.10.65]
4 General
Rehabilitation includes a wide range of activities to restore or upgrade the performance of a drain or
sewer system including those examples shown in Table 1.
Table 1 — Scope of rehabilitation
Objective Examples of system related measures Examples of component related
measures
Restore — Remove extraneous water — Cleaning
original
— … — Repair
performance
— Renovation
— Replacement (like for like).
Upgrade — Maximize use of existing flow — Replacement (increased capacity).
original capacity
performance
— Reduce hydraulic input to the drain
or sewer system
— Attenuate peak flows
— …
This document applies the process described in EN 14654-1 for implementing rehabilitation activities
in the integrated drain and sewer system management plan. This document shall be used in conjunction
with EN 14654-1.
5 Integrated sewer system management planning
Rehabilitation activities are included in the rehabilitation plan, as part of an Integrated Sewer System
Management Plan. A rehabilitation plan (see EN 752:2017, 6.4.4.4) should be in place for the drain and
sewer system prior to carrying out any rehabilitation activities. However, this is not always possibl
...