SIST EN 14654-1:2021

SLOVENSKI STANDARD
01-marec-2021
Nadomešča:
SIST EN 14654-1:2014
Sistemi za odvod odpadne vode in kanalizacijo zunaj stavb - Upravljanje in nadzor
aktivnosti - 1. del: Splošne zahteve
Drain and sewer systems outside buildings - Management and control of activities - Part
1: General requirements
Entwässerungssysteme außerhalb von Gebäuden - Management und Überwachung von
Maßnahmen - Teil 1: Allgemeine Anforderungen
Réseaux d'évacuation et d'assainissement à l'extérieur des bâtiments - Gestion et
contrôle des activités opérationnelles - Partie 1: Exigences générales
Ta slovenski standard je istoveten z: EN 14654-1:2021
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 14654-1
EUROPEAN STANDARD
NORME EUROPÉENNE
January 2021
EUROPÄISCHE NORM
ICS 93.030 Supersedes EN 14654-1:2014
English Version
Drain and sewer systems outside buildings - Management
and control of activities - Part 1: General requirements
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 1: Exigences générales 1: Allgemeine Anforderungen
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 14654-1:2021 E
worldwide for CEN national Members.

Contents Page
European foreword . 4
Introduction . 5
1 Scope . 7
2 Normative references . 7
3 Terms and definitions . 7
4 General . 8
5 Integrated Sewer System Management Planning . 10
6 Preparation of programme . 10
6.1 Introduction . 10
6.2 Review of the plan . 10
6.3 Investigation . 11
6.4 Assessment . 11
6.5 Development of the programme . 11
7 Preparation of the project specification . 13
7.1 Introduction . 13
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. 14
7.6 Performance indicators . 15
8 Implementation of projects . 15
8.1 Introduction . 15
8.2 Selection of contractor . 15
8.3 Method of working . 16
8.4 Supervision of the works . 16
8.5 Flow control . 17
8.6 Traffic management . 17
8.7 Waste management . 17
8.8 Training . 18
8.9 Health and safety . 18
8.10 Environmental impact . 18
8.11 Reporting . 18
9 Measurement of conformity . 19
9.1 General . 19
9.2 Non-conformities . 19
9.3 Post project appraisal . 19
10 Review of plan and programme . 19
Bibliography . 20

European foreword
This document (EN 14654-1:2021) 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, together with EN 14654-3:2021 supersedes EN 14654-1:2014.
The general content of EN 14654-1 which is duplicated in EN 14654-2:2013 is included in this
document. The specialized text relating to Rehabilitation has been retained in EN 14654-2:2021 and the
specialized text relating to Drain and sewer cleaning has been moved to EN 14654-3:2021.
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; (the present document)
— Part 2: Rehabilitation
— 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.
Introduction
Drain and sewer systems are part of the overall wastewater system that provides a service to the
community. This can be briefly described as:
— removal of wastewater from premises for public health and hygienic reasons;
— prevention of flooding in urbanized areas;
— protection of the environment.
The overall wastewater system has four successive functions:
— collection;
— transport;
— treatment;
— discharge.
Wastewater can, if necessary after treatment, be discharged to the environment or reused.
Collection and transport of wastewater is provided by drain and sewer systems.
Drain and sewer systems were installed because there was a need to remove the polluted water to
prevent diseases.
Traditionally, drain and sewer systems were constructed to collect and transport all types of
wastewater together irrespective of the initial source. This led to difficulties in handling the peak flows
in times of heavy rainfall and to the introduction of combined sewer overflows, which discharged
polluted water to surface receiving water bodies.
It was later recognized that separate systems, where foul wastewater was kept separate from runoff
derived from surface water, would be an improvement over such combined systems.
Although many drain and sewer systems started out as combined systems there are strong arguments
for considering the separation of foul wastewater and surface water. The pollutant effects are not the
same and the separation of effluents allows for the different treatment for each element of wastewater,
providing more environmentally friendly solutions.
This concept is included in the approach of integrated sewer management.
This document provides a framework for the design, construction, maintenance, operation and
rehabilitation of drain and sewer systems outside buildings. This is illustrated in the upper part of the
diagram in Figure 1. This document is supported by more detailed standards for the investigation,
design, construction, organization and control of drain and sewer systems.
Investigation and assessment standards include:
— EN 13508 (all parts), Investigation and assessment of drain and sewer systems outside buildings.
Design and construction standards include:
— EN 16932 (all parts), Drain and sewer systems outside buildings — Pumping systems;
— EN 16933-2, Drain and sewer systems outside buildings — Design — Part 2: Hydraulic design;
— EN 1295 (all parts), Structural design of buried pipelines under various conditions of loading;
— EN 1610, Construction and testing of drains and sewers;
— EN 12889, Trenchless construction and testing of drains and sewers;
— EN 15885, Classification and characteristics of techniques for renovation and repair of drains and
sewers.
Management and control standards include:
— EN 14654 (all parts), Management and control of activities in drain and sewer systems outside
buildings.
To support these detailed standards information comes from specifications produced by individual
organizations for their own use. Product standards should also take into account the functional
requirements in this document through EN 476, EN 13380 and EN 14457.

Figure 1 —Pyramid diagram
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 general requirements for the management and control of 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 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 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 The following additional terms used in this document are defined in EN 16323:2014:
— drain
— receiving water body
— rehabilitation
— sewer
— sewer system
— surface receiving water body
— wastewater
— wastewater treatment plant
3.1
contractor
organization responsible for implementation of activities on a drain or sewer system
Note 1 to entry: The contractor can be the part of the same organization as the employing authority.
3.2
employing authority
organization that owns or is responsible for the management of a drain or sewer system
4 General
EN 752:2017, Clause 6, outlines the process for preparation and implementation of an integrated drain
and sewer system management plan which includes, at a strategic level, a plan for new developments,
the operation and maintenance, and rehabilitation of the drain and sewer system and for contingency
and emergency planning.
This document sets out a process for implementing the proposals in the integrated drain and sewer
system management plan. The process is based on a staged application of the process outlined in
Figure 2.
Figure 2 —The integrated sewer system management process (based on EN 752:2017, Figure 5)
The integrated sewer system management process is applied successively to develop programmes
based on the integrated sewer system management plan. The programme outlines a series of projects to
implement the plan. Following this, the integrated sewer system management process is then used to
produce a detailed specification for each of these projects in the programme. Finally, following the
implementation of each project, the programme and the integrated sewer system management plan are
reviewed and updated where necessary. The performance requirements for the rehabilitated systems
should be in accordance with EN 752:2017, 5.2. At each stage further investigation and assessment is
carried out in accordance with EN 13508-1.
NOTE In this document “project” refers both to discrete projects and continuous activities.
This staged process is summarized in Figure 3.

Figure 3 — Summary of the management and control process
5 Integrated Sewer System Management Planning
Prior to implementation of any activities or design of any works EN 752:2017 recommends that an
Integrated Sewer System Management Plan is prepared in accordance with EN 752:2017, Clause 6, for
the drain and sewer system to achieve the performance requirements in accordance with EN 752:2017,
Clause 5. However, this is not always possible if activities are required urgently (e.g. in response to a
drain or sewer failure).
The detailed plan does not include detailed descriptions of the solutions. It includes only general
descriptions of the approaches to be taken.
The aims of the programmes of activities should be based on the relevant detailed plans in the
integrated sewer system management plan.
6 Preparation of programme
6.1 Introduction
The plan does not generally contain the necessary detail to proceed directly to the production of the
project specification. The programme defines a series of projects, in line with the plan, to ensure that
the drain and sewer system meets the performance requirements. The programme should define the
objectives for each project in sufficient detail so that a project specification can then be produced in
accordance with Clause 7.
The preparation of the programme involves:
a) review of the plan (see 6.2) to ensure it is still current and to establish what further investigation is
required to develop the programme;
b) further investigation (see 6.3) to provide the information necessary for the more detailed
assessment;
c) more detailed assessment (see 6.4) to identify further detail of the performance deficiencies that
the programme aims to address;
d) preparation of the programme (see 6.5) setting the scope and objectives for each of the projects.
All stages of the preparation of the programme shall take account of the health and safety principles set
out in EN 752:2017, Clause 7.
6.2 Review of the plan
A review should be undertaken of the relevant aspects of the integrated sewer system management
plan.
This should
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