SIST EN 14654-1:2014
(Main)Management and control of operational activities in drain and sewer systems outside buildings - Part 1: Cleaning
Management and control of operational activities in drain and sewer systems outside buildings - Part 1: Cleaning
EN 14654-1 establishes the general principles for the management and control of operational activities in drain and sewer systems outside buildings and specifies requirements for development and implementation of work programmes, and the selection of techniques. This European Standard covers the management and control of cleaning. It is applicable to drain and sewer systems, which operate essentially under gravity, from the point where wastewater leaves a building, roof drainage system, or paved area, to the point where it is discharged into a treatment works 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.
Management und Überwachung von betrieblichen Maßnahmen in Entwässerungssystemen außerhalb von Gebäuden - Teil 1: Reinigung
Diese Europäische Norm stellt die allgemeinen Grundsätze zum Management und zur Überwachung von betrieblichen Maßnahmen in Entwässerungssystemen außerhalb von Gebäuden auf und legt Anforderungen an die Entwicklung und Umsetzung der Arbeitsprogramme und die Auswahl von Maßnahmen fest.
Diese Europäische Norm gilt für das Management und die Überwachung der Reinigung.
Sie gilt für Entwässerungssysteme, die hauptsächlich als Freispiegelleitungen betrieben werden, von dem Punkt an, wo das Abwasser das Gebäude, die Dachentwässerung oder die befestigte Fläche verlässt, bis zu dem Punkt, an dem das Abwasser in eine Behandlungsanlage oder in ein Gewässer einge¬leitet wird. Abwasserleitungen und -kanäle unterhalb von Gebäuden sind hierbei eingeschlossen, solange sie nicht Bestandteil der Gebäudeentwässerung sind.
Gestion et contrôle des opérations d'exploitation dans les réseaux d'évacuation et d'assainissement à l'extérieur des bâtiments - Partie 1: Nettoyage
La présente Norme européenne établit les principes généraux de gestion et de contrôle des opérations d’exploitation dans les réseaux d’évacuation et d’assainissement à l'extérieur des bâtiments, et établit les prescriptions concernant le développement et la mise en application de programmes de travaux, ainsi que le choix des techniques employées.
Cette partie traite de la gestion et du contrôle du nettoyage.
Elle s’applique aux réseaux d’évacuation et d’assainissement, principalement les réseaux gravitaires, à partir du point où les eaux usées quittent un bâtiment, un système d’évacuation de toiture ou une surface revêtue, jusqu’au point où elles se déversent dans une station d’épuration ou un milieu récepteur aquatique. Les canalisations d’évacuation et d’assainissement situées sous les bâtiments sont également visées dès l'instant qu'elles ne font pas partie du système d'évacuation propre au bâtiment.
Upravljanje in nadzor operativnih aktivnosti odvodnih in odpadnih sistemov zunaj stavb - 1. del: Čiščenje
Standard EN 14654-1 določa splošna načela za upravljanje in nadzor nad operativnimi dejavnostmi v drenažnih in kanalizacijskih sistemih zunaj stavb ter določa zahteve za razvoj in izvajanje delovnih programov ter izbiro tehničnih pristopov. Ta evropski standard zajema upravljanje in nadzor čiščenja. Obravnava drenažne in kanalizacijske sisteme, ki delujejo zlasti s pomočjo gravitacije, od točke, kjer odpadne vode zapustijo stavbo, strešni drenažni sistem ali tlakovano območje, do točke, kjer se izlivajo v čistilne naprave ali sprejemajoče vodno telo. Zajeti so tudi drenažni in kanalizacijski sistemi, ki ne tvorijo dela drenažnega sistema stavbe.
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Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Management und Überwachung von betrieblichen Maßnahmen in Entwässerungssystemen außerhalb von Gebäuden - Teil 1: ReinigungGestion et contrôle des opérations d'exploitation dans les réseaux d'évacuation et d'assainissement à l'extérieur des bâtiments - Partie 1: NettoyageManagement and control of operational activities in drain and sewer systems outside buildings - Part 1: Cleaning93.030Zunanji sistemi za odpadno vodoExternal sewage systemsICS:Ta slovenski standard je istoveten z:EN 14654-1:2014SIST EN 14654-1:2014en,fr,de01-oktober-2014SIST EN 14654-1:2014SLOVENSKI
STANDARDSIST EN 14654-1:20051DGRPHãþD
SIST EN 14654-1:2014
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 14654-1
June 2014 ICS 93.030 Supersedes EN 14654-1:2005English Version
Management and control of operational activities in drain and sewer systems outside buildings - Part 1: Cleaning
Gestion et contrôle des opérations d'exploitation dans les réseaux d'évacuation et d'assainissement à l'extérieur des bâtiments - Partie 1: Nettoyage
Management und Überwachung von betrieblichen Maßnahmen in Entwässerungssystemen außerhalb von Gebäuden - Teil 1: Reinigung This European Standard was approved by CEN on 17 April 2014.
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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, 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:
Avenue Marnix 17,
B-1000 Brussels © 2014 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 14654-1:2014 ESIST EN 14654-1:2014
EN 14654-1:2014 (E) 2 Contents Page Foreword .4 Introduction .5 1 Scope .6 2 Normative references .6 3 Terms and definitions .6 3.1 General .6 3.2 Deposits .7 3.3 Cleaning methods .7 4 General .8 5 Cleaning plan . 11 5.1 Introduction . 11 5.2 Cleaning aims . 11 6 Preparation of cleaning programme . 12 6.1 Introduction . 12 6.2 Review of the cleaning plan . 12 6.3 Investigation . 12 6.4 Assessment . 13 6.5 Develop the programme . 14 6.5.1 Introduction . 14 6.5.2 Specification of objectives . 14 6.5.3 Develop options . 15 6.5.4 Assess technical feasibility of solutions . 15 6.5.5 Select optimum solution . 15 6.5.6 Producing the programme . 16 7 Preparation of the project specification . 16 7.1 Introduction . 16 7.2 Review of the project description and project objectives . 16 7.3 Investigation . 16 7.4 Assessment . 17 7.5 Drafting the project specification . 17 7.5.1 Prepare detailed options . 17 7.5.2 Select optimal solution . 18 7.5.3 Prepare project specification . 18 7.6 Performance indicators . 19 7.6.1 Introduction . 19 7.6.2 Indicators for the assessment of the work quality . 19 7.6.3 Indicators for the assessment of the effectiveness of the project or programme . 19 8 Implementation of projects . 20 8.1 Introduction . 20 8.2 Select cleaning technique . 20 8.3 Selection of contractor . 21 8.4 Supervision of the works . 21 8.5 Flow control . 22 8.6 Traffic management . 22 8.7 Waste management . 23 8.8 Training . 23 8.9 Health and safety . 23 SIST EN 14654-1:2014
EN 14654-1:2014 (E) 3 8.10 Environmental impact . 23 8.11 Cleaning report . 24 9 Measurement of conformity . 25 9.1 Measuring conformity with the project specification . 25 9.1.1 Measuring conformity . 25 9.1.2 Non-conformities . 25 9.2 Post project appraisal . 25 10 Review of programme and plan . 26 Annex A (informative)
Example of cleaning report form . 27 Annex B (informative)
Cleaning methods . 28 B.1 General . 28 B.2 Jetting . 28 B.3 Jetting with suction . 28 B.4 Winching. 28 B.5 Rodding . 29 B.6 Remote controlled equipment . 29 B.7 Flushing . 29 B.8 Cleaning balls/scouring plates . 29 B.9 Manual or mechanical excavation . 29 Bibliography . 30
SIST EN 14654-1:2014
EN 14654-1:2014 (E) 4 Foreword This document (EN 14654-1:2014) 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 December 2014, and conflicting national standards shall be withdrawn at the latest by December 2014. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights. This document supersedes EN 14654-1:2005. EN 14654 “Management and control of operational activities in drain and sewer systems outside buildings” contains the following parts: — Part 1: Cleaning; — Part 2: Rehabilitation. 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 organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. SIST EN 14654-1:2014
EN 14654-1:2014 (E) 5 Introduction This European Standard deals with the management and control of cleaning operations in drain and sewer systems. Cleaning operations are a part of the general management of drain and sewer systems. The employing authority sets the aims of the cleaning operations, expressed in terms of the end result, necessary to achieve the performance requirements for the drain and sewer system (see EN 752), and develops a strategy to meet these aims. The employing authority also produces a specification for cleaning operations taking account of the aims and the strategy, and including indicators for controlling the quality of the results. Before commencing cleaning operations, the employing authority should have a thorough knowledge of the drain and sewer system and an assessment of the hydraulic conditions and other relevant factors in order to understand the type and frequency of cleaning necessary (see EN 752). However, it is sometimes necessary to carry out some work in order to obtain this knowledge.
On completion, a report of the cleaning operations is produced, providing information on the works, on any difficulties encountered and any anomalies.
This information is used to improve the management of drain and sewer systems.
SIST EN 14654-1:2014
EN 14654-1:2014 (E) 6 1 Scope This European Standard establishes the general principles for the management and control of operational activities in drain and sewer systems outside buildings and specifies requirements for development and implementation of work programmes, and the selection of techniques.
This European Standard covers the management and control of cleaning. It is applicable to drain and sewer systems, which operate essentially under gravity, from the point where wastewater leaves a building, roof drainage system, or paved area, to the point where it is discharged into a treatment works 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, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 752:2008, Drain and sewer systems outside buildings EN 1829-1:2010, High pressure water jet machines - Safety requirements - Part 1: Machines EN 1829-2:2008, High-pressure water jet machines - Safety requirements - Part 2: Hoses, hose lines and connectors EN 13508-1:2012, Investigation and assessment of drain and sewer systems outside buildings - Part 1: General Requirements EN ISO 14001, Environmental management systems - Requirements with guidance for use (ISO 14001:2004) 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 General 3.1.1 cleaning activities
removal or partial removal of settled deposits, attached deposits, roots and other obstacles from a drain or sewer system 3.1.2 degree of cleaning extent to which complete removal of deposits is achieved
3.1.3 employing authority organization that owns or is responsible for the management of a drain or sewer system 3.1.4 removal extraction of deposits after collecting at the working area or the intentional use of the flow in the drain or sewer to carry the re-entrained solids to a specified point of extraction SIST EN 14654-1:2014
EN 14654-1:2014 (E) 7 3.1.5 self-cleansing ability of the flow in a drain or sewer to carry away solid particles which would otherwise be deposited in the pipe
[SOURCE: EN 16323: 2014, 2.2.1.13] 3.1.6 supernatant liquor liquor in a tank lying above the deposited solids [SOURCE: EN 16323:2014, 2.1.2.16] 3.2 Deposits 3.2.1 attached deposits material attached to the wall of elements of the drain or sewer system by physical or chemical bonding
3.2.2 settled deposits material deposited by gravity in the invert or benching of elements of the drain or sewer system 3.3 Cleaning methods 3.3.1 cleaning ball spherical device, having an indented surface, designed to be carried through a drain or sewer by the flow to facilitate removal of sediments
[SOURCE: EN 752:2008, 3.9] 3.3.2 combined jetting simultaneous use of high-pressure water jetting equipment together with a suction action, to remove obstructions or sediments from drains or sewers [SOURCE: EN 16323:2014, 2.2.1.10] 3.3.3 flushing use of a temporary and substantially increased flow to facilitate the removal of obstructions or sediments from drains or sewers
[SOURCE: EN 16323: 2014, 2.2.1.16] 3.3.4 jetting use of water under defined conditions of pressure and flow through a nozzle
[SOURCE: EN 16323:2014, 2.2.1.18] 3.3.5 rodding use of appropriate device on the end of flexible rods to facilitate the removal of obstructions (or sediments) from drains or sewers
[SOURCE: EN 16323: 2014, 2.2.1.11] SIST EN 14654-1:2014
EN 14654-1:2014 (E) 8 3.3.6 scouring plate device used to clean a drain or sewer by concentrating the flow into a small cross section thereby increasing the flow velocity
3.3.7 winching use of a device pulled through a drain or sewer to facilitate removal of sediments (or obstructions)
[SOURCE: EN 16323:2014, 2.2.1.12] 4 General EN 752:2008, Clause 6, outlines the process for preparation and implementation of an integrated drain and sewer system management plan which includes, at a strategic level, plans for the rehabilitation and maintenance of the drain and sewer system. The amount of detail in these plans in the integrated drain and sewer system plan can vary. A maintenance plan should include a cleaning plan where cleaning activities are necessary.
Cleaning activities in drains and sewers can be carried out pro-actively, to prevent problems occurring or to clean a drain or sewer before particular operations (e.g. an inspection or renovation work) or reactively in response to problems that have occurred.
The requirements for pro-active cleaning can be identified through a rehabilitation plan, a maintenance plan involving periodic monitoring or as part of an integrated sewer system management plan in accordance with EN 752. Consideration shall also be given to the feasibility of preventing deposition of sediments for example by rehabilitation of the sewer. This European Standard sets out a process for implementing the cleaning activities in the integrated drain and sewer system management plan. The process is based on a staged application of the process outlined in Figure 1.
NOTE Based on EN 752:2008, Figure 5. Figure 1 — Integrated Sewer System Management Process SIST EN 14654-1:2014
EN 14654-1:2014 (E) 9 The integrated sewer system management process is applied successively to develop a cleaning programme based on the integrated sewer system management plan. The programme outlines a series of discrete 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 cleaning programme and the integrated sewer system management plan are reviewed and updated where necessary. The performance requirements should be in accordance with EN 752:2008, 5.2.
At each stage further investigation and assessment is carried out in accordance with EN 13508-1.
This staged process is summarized in full in Figure 2. The extent and detail of these stages should be determined by the characteristics of the individual systems. According to the specific local conditions, stages may be consolidated or, if they are not necessary, omitted. SIST EN 14654-1:2014
EN 14654-1:2014 (E) 10
Figure 2 — Summary of the sewer cleaning management and control process SIST EN 14654-1:2014
EN 14654-1:2014 (E) 11 5 Cleaning plan 5.1 Introduction An integrated sewer system management plan prepared in accordance with EN 752:2008, Clause 6, includes: — new development plan; — rehabilitation plan; — operational plan; — maintenance plan. Cleaning activities are one aspect of the maintenance plan, as part of an integrated sewer system management plan. A maintenance plan, dealing with cleaning activities should be in place for the drain and sewer system prior to carrying out major programmes of sewer cleaning. However, this is not always possible if works are required urgently (e.g. in response to a sewer failure).
It is not necessary for the plan to include detailed descriptions of the solutions. It may include only general descriptions of the approaches to be taken.
5.2 Cleaning aims The principal aims of carrying out cleaning work can include: a) Pro-active cleaning — to ensure that the performance of the drain or sewer system is acceptable;
— to prolong the operational life and maintain the value of the asset;
— to control septicity to reduce associated odour, health and potential corrosion problems; — to limit polluting discharges into receiving water bodies; — to enable inspection or renovation of the drain or sewer system; — to optimize the effectiveness of key components of the system at critical times (e.g. prior to heavy rain seasons, busy periods in tourist sites); — to facilitate inspection.
b) Reactive cleaning — to remove a blockage in order to restore the flow; — to restore the function of the drain or sewer system; — to remove sediments in order to reduce septicity and odour problems. The nature of the aim can determine the degree of cleaning necessary. SIST EN 14654-1:2014
EN 14654-1:2014 (E) 12 6 Preparation of cleaning programme 6.1 Introduction The starting point for the preparation of the cleaning programme is the maintenance plan produced in accordance with EN 752:2008, Clause 6, and the performance requirements produced in accordance with EN 752:2008, Clause 5.
The maintenance plan does not generally contain the necessary detail to proceed directly to the production of the cleaning specification. The cleaning programme defines a series of projects, in line with the integrated sewer system management plan, to ensure that the drain and sewer system meets the performance requirements. The cleaning 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 cleaning programme involves: a) review of the cleaning 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 needs to address; d) develop the programme (see 6.5) setting the scope and objectives for each of the projects. All stages of the preparation of the cleaning programme shall take account of the health and safety principles set out in EN 752:2008, Clause 7. 6.2 Review of the cleaning plan A review should be undertaken of the cleaning aspects of the maintenance plan within the integrated sewer system management plan. This should include: a) ensuring the performance requirements used in the preparation of the integrated sewer system management plan are still current; b) checking that any assumptions regarding projected timescales included in the plan for new developments or other changes to the sewer system are still valid; c) identifying where further investigation and assessment is required in order to develop the programme of works.
If there have been any changes then the plan should be updated. 6.3 Investigation The investigation of the drain and sewer system shall be carried out in accordance with EN 752:2008, Clause 6, and EN 13508-1:2012, Clause 5.
The location of the sections of drains and sewers where proactive cleaning is to be carried out and the assessment of the cleaning frequencies shall be based on: a) an understanding of the characteristics and structural condition of the drain and sewer system; b) an analysis of its performance; SIST EN 14654-1:2014
EN 14654-1:2014 (E) 13 c) a review of the available information which may include the performance of similar systems elsewhere.
The different sections of the sewer shall be described according to the information collected in order to optimize the cleaning programme. The scope of the investigations necessary to produce the cleaning programme will depend on the extent of the investigations carried out during the preparation of the integrated sewer system management plan. A review should be undertaken of the information available. The review should include: d) inventory data
1) type of effluent (wastewater, surface water, combined sewage or specific effluents); 2) sewer characteristics (shape, size, slope, depth, material, etc.), presence and characteristics of combined sewer overflows and other ancillaries; 3) characteristics of the location of the sewer (e.g. aquifer protection zones, ground water level, trees, proximity of receiving water bodies); e) condition information from inspection reports (e.g. visual inspection reports, CCTV reports, sediment measurements); f) data on flows from measurements or the results of hydraulic models; g) records of past cleaning (e.g. location of areas of persistent operational problems); and h) performance data (e.g. flooding, sewer blockages, collapses, odours, septicity problems, premature operation of combined sewer overflows, etc.). Where there is insufficient information available to plan the cleaning programme, a programme of investigations shall be carried out to obtain the necessary information.
An example report form is given in Annex A. Investigations should be carried out where further information is needed in order to produce the cleaning programme.
Examples can include: — further inspection in parts of the system where the original assessment was based only on sample inspections; — the use of an appropriate sewer flow simulation model; — more detailed studies of the impact of any discharges on receiving waters bodies.
Details of investigation techniques for drains and sewers are described in EN 13508-1. 6.4 Assessment The assessment should identify the location of those components of the drains and sewer system where proactive or reactive cleaning is to be carried out. This shall be based on: a) the effect of the deposits on the performance of the system; b) the sources of such deposits;
SIST EN 14654-1:2014
EN 14654-1:2014 (E) 14 c) the typology of the drain or sewer; d) the nature of the effluent.
The performance of the drain or sewer systems shall be assessed in accordance with EN 13508-1:2012, Clause 6, using the results of the investigation (see 6.3). The assessments carried out during the preparation of the integrated sewer system management plan should be reviewed and updated in the light of any new information identified during the investigations. The performance at each planning horizon shall be compared to the performance requirements to identify the needs for cleaning. Where inspection is used to determine the current levels of sediment, the effect of the movement of
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