SIST EN 14654-2:2013
(Main)Management and control of cleaning operations in drains and sewers - Part 2: Rehabilitation
Management and control of cleaning operations in drains and sewers - Part 2: Rehabilitation
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 part covers the management and control of rehabilitation activities. 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. 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 Abwasserleitungen und -kanälen - Teil 2: Sanierung
Diese Europäische Norm stellt die allgemeinen Verfahren zu Management und Überwachung von betrieblichen Maßnahmen in Entwässerungssystemen außerhalb von Gebäuden auf und legt Anforderungen an die Entwicklung und Umsetzung von Arbeitsprogrammen und die Auswahl von Techniken fest. Dieser Teil behandelt das Management und die Überwachung von Sanierungsmaßnahmen. Er gilt für Entwässerungssysteme außerhalb von Gebäuden, die hauptsächlich als Freispiegelleitungen betrieben werden, und zwar ab der Stelle, an der das Abwasser ein Gebäude, eine Dachentwässerung oder eine befestigte Fläche verlässt, bis zu dem Punkt, an dem es in eine Behandlungsanlage oder einen Vorfluter eingeleitet wird. Abwasserleitungen und –kanäle unterhalb von Gebäuden sind hierbei eingeschlossen, solange sie nicht Bestandteil der Gebäudeentwässerung sind.
Gestion et contrôle des opérations de nettoyage des canalisations d'évacuation et d'assainissement - Partie 2: Réhabilitation
La présente Norme européenne établit les principes généraux relatifs à la gestion et au contrôle des
opérations d’exploitation des canalisations d’évacuation et d’assainissement à l’extérieur des bâtiments et
spécifie les exigences relatives au développement et à la mise en oeuvre de programmes de travail, ainsi
qu’au choix des techniques.
La présente partie traite de la gestion et du contrôle des activités de réhabilitation.
Elle est applicable 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 dans un milieu récepteur
aquatique. Les branchements et collecteurs situés sous les bâtiments sont inclus à condition qu’ils ne fassent
pas partie du réseau d’évacuation du bâtiment.
Upravljanje in nadzor nad čiščenjem odvodnih in odpadnih kanalov - 2. del: Sanacija
Ta evropski standard določa splošna načela za upravljanje in nadzor nad operativnimi dejavnostmi v odvodnih in odpadnih kanalih zunaj stavb ter določa zahteve za razvoj in izvajanje delovnih programov ter izbiro tehničnih pristopov. Ta del zajema upravljanje in nadzor sanacijskih del. Velja za 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.
General Information
Relations
Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.6DQDFLMDManagement und Überwachung von betrieblichen Maßnahmen in Abwasserleitungen und -kanälen - Teil 2: SanierungGestion et contrôle des opérations de nettoyage des canalisations d'évacuation et d'assainissement - Partie 2: RéhabilitationManagement and control of cleaning operations in drains and sewers - Part 2: Rehabilitation93.030Zunanji sistemi za odpadno vodoExternal sewage systemsICS:Ta slovenski standard je istoveten z:EN 14654-2:2013SIST EN 14654-2:2013en,fr,de01-december-2013SIST EN 14654-2:2013SLOVENSKI
STANDARD
SIST EN 14654-2:2013
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 14654-2
January 2013 ICS 93.030 English Version
Management and control of operational activities in drain and sewer systems outside buildings - Part 2: Rehabilitation
Gestion et contrôle des opérations de nettoyage des canalisations d'évacuation et d'assainissement - Partie 2: Réhabilitation
Management und Überwachung von betrieblichen Maßnahmen in Abwasserleitungen und -kanälen - Teil 2: Sanierung This European Standard was approved by CEN on 17 November 2012.
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
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Avenue Marnix 17,
B-1000 Brussels © 2013 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 14654-2:2013: ESIST EN 14654-2:2013
EN 14654-2:2013 (E) 2 Contents Page Foreword .41 Scope .52 Normative references .53 Terms and definitions .54 General .65 Rehabilitation plan .96 Preparation of rehabilitation programme .96.1 Introduction .96.2 Review of the rehabilitation plan .96.3 Investigation . 106.4 Assessment . 106.5 Develop the programme . 116.5.1 Introduction . 116.5.2 Developing integrated solutions . 126.5.3 Assess technical feasibility of solutions . 166.5.4 Select optimum solution . 166.5.5 Producing the programme . 167 Preparation of the project specification . 177.1 Introduction . 177.2 Review of the project description and project objectives . 177.3 Investigation . 177.4 Assessment . 187.5 Drafting the project specification . 187.5.1 Introduction . 187.5.2 Prepare detailed solutions . 197.5.3 Assess feasibility of solutions . 207.5.4 Select optimal solution . 217.5.5 Prepare project specification . 217.6 Performance indicators . 227.6.1 Introduction . 227.6.2 Indicators for the assessment of the work quality . 227.6.3 Indicators for the assessment of the effectiveness of the project or programme . 228 Implementation of projects . 238.1 Introduction . 238.2 Selection of contractor . 238.3 Supervision of the works . 248.4 Flow control . 248.5 Traffic management . 248.6 Waste management . 258.7 Training . 258.8 Health and safety . 258.9 Environmental impact . 258.10 Rehabilitation report . 269 Measurement of conformity . 279.1 Measuring conformity with the project specification . 279.1.1 General . 279.1.2 New or replacement drains or sewers . 279.1.3 Renovation and repair systems at the “I” stage . 279.1.4 Measuring conformity . 27SIST EN 14654-2:2013
EN 14654-2:2013 (E) 3 9.1.5 Non-conformities . 289.2 Post project appraisal . 2810 Review of programme and plan . 28Annex A (normative)
Rehabilitation approaches. 29A.1 Introduction . 29A.2 Rehabilitation planning objectives . 29A.2.1 Introduction . 29A.2.2 Technical objectives . 29A.2.3 Economic objectives . 30A.2.4 Legal objectives . 30A.3 Description of rehabilitation approaches . 30Bibliography . 32 SIST EN 14654-2:2013
EN 14654-2:2013 (E) 4 Foreword This document (EN 14654-2:2013) 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 July 2013, and conflicting national standards shall be withdrawn at the latest by July 2013. 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. The standard series EN 14654 contains the following parts: EN 14654-1, Management and control of operational activities in drain and sewer systems outside buildings Part 1: Sewer cleaning; EN 14654-2, Management and control of operational activities in drain and sewer systems outside buildings — Part 2: Rehabilitation (the present document). Other parts dealing with other activities may be added later. In drafting this part of this European Standard 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, 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 14654-2:2013
EN 14654-2:2013 (E) 5 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 part covers the management and control of rehabilitation activities. 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. 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 13508-1:2012, Investigation and assessment of drain and sewer systems outside buildings — Part 1: General requirements 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 extraneous water unwanted flow in a drain or sewer system
[SOURCE: EN 752:2008, definition 3.25] 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 752:2008, definition 3.34] 3.3 maintenance routine work undertaken to ensure the continuing performance of drain and sewer systems [SOURCE: EN 752:2008, definition 3.40] 3.4 manhole chamber with a removable cover constructed on a drain or sewer to permit entry by personnel [SOURCE: EN 752:2008, definition 3.41] 3.5 pipeline length continuous section of drain or sewer between two adjacent nodes
[SOURCE: EN 13508-2:2003, definition 3.26] SIST EN 14654-2:2013
EN 14654-2:2013 (E) 6 3.6 rehabilitation all measures for restoring or upgrading the performance of existing drain and sewer systems [SOURCE: EN 752:2008, definition 3.50] 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 752:2008, definition 3.52] 3.8 repair rectification of local damage [SOURCE: EN 752:2008, definition 3.53] 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 752:2008, definition 3.54] 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
Examples of system related measures Examples of component related measures Restore original Performance • Remove extraneous flows • … • Cleaning • Repair • Renovation • Replacement (like for like).
Upgrade original Performance • Maximise use of existing flow capacity • Reduce hydraulic input to the drain or sewer system • Attenuate peak flows • … • Replacement (increased capacity).
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, a plan for rehabilitation of the drain and sewer system. The amount of detail in the rehabilitation plan in the integrated drain and sewer system plan can vary.
This European Standard sets out a process for implementing the rehabilitation proposals in the integrated drain and sewer system management plan. The process is based on a staged application of the process outlined in Figure 1. SIST EN 14654-2:2013
EN 14654-2:2013 (E) 7
Figure 1 — The integrated sewer system management process (based on EN 752:2008, Figure 5) The integrated sewer system management process is applied successively to develop a rehabilitation programme based on the integrated sewer system management plan. The programme outlines a series of discrete rehabilitation projects to implement the rehabilitation proposals in 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 rehabilitation 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 752:2008, 5.2. At each stage further investigation and assessment is carried out in accordance with EN 13508-1.
This staged process is summarised in Figure 2. SIST EN 14654-2:2013
EN 14654-2:2013 (E) 8
Figure 2 — Summary of the rehabilitation management and control process SIST EN 14654-2:2013
EN 14654-2:2013 (E) 9 5 Rehabilitation plan 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. A rehabilitation plan, as part of an Integrated Sewer System Management Plan should be prepared for the drain and sewer system prior to design or construction of any rehabilitation works. However, this is not always possible if works are required urgently (e.g. in response to a drain or sewer failure).
It is not necessary for the rehabilitation plan to include detailed descriptions of the solutions. It may include only general descriptions of the approaches to be taken.
A number of different approaches to rehabilitation options which may be used in preparing a rehabilitation plan are described in Annex A (normative). 6 Preparation of rehabilitation programme 6.1 Introduction The starting point for the preparation of the rehabilitation programme is the rehabilitation plan produced in accordance with EN 752:2008, Clause 6, and the performance requirements produced in accordance with EN 752:2008, Clause 5.
The rehabilitation plan does not generally contain the necessary detail to proceed directly to the production of the project specification. The rehabilitation programme defines a series of projects, in line with the rehabilitation plan, to ensure that the drain and sewer system meets the performance requirements. The rehabilitation 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 rehabilitation programme involves: a) review of the rehabilitation 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) preparation of the programme (see 6.5) setting the scope and objectives for each of the projects. All stages of the preparation of the rehabilitation programme shall take account of the health and safety principles set out in EN 752:2008, Clause 7. 6.2 Review of the rehabilitation plan A review should be undertaken of the rehabilitation aspects of the integrated sewer system management plan.
SIST EN 14654-2:2013
EN 14654-2:2013 (E) 10 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 scope of the investigations necessary to produce the rehabilitation programme will depend on the extent of the investigations carried out during the preparation of the integrated sewer system management plan. Investigations shall be carried out where further information is required in order to produce the rehabilitation programme. Examples can include: further inspection in parts of the system where the original assessment was based only on sample inspections; the production of more detailed sewer flow simulation models, where the original assessment was based on a simplified model; more detailed studies of the impact of any discharges on receiving waters.
The types of investigation can include: investigations of the existing drain and sewer system (e.g. visual inspections, radar, sonar, flow measurements, sewer flow simulation modelling, wastewater quality simulation modelling); more detailed investigations of the impact of proposed new developments in the area (e.g. hydraulic modelling etc.);
other investigations to determine feasibility of options (e.g. preliminary topographical, geotechnical and other investigations (see EN 752:2008, 8.1, item 2 in list, and EN 752:2008, 9.3)). Details of investigation techniques for existing drains and sewers are described in EN 13508-1. 6.4 Assessment 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 rehabilitation 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 rehabilitation. The assessment should identify the location of those components of the drains and sewer system where proactive or reactive rehabilitation are to be carried out. This shall be based on: a knowledge of the characteristics and structural condition of the drain and sewer system; an understanding of existing and past failures and their association with performance deficiencies including their impact on operations and maintenance of parts of the drain and sewer system concerned; SIST EN 14654-2:2013
EN 14654-2:2013 (E) 11 an analysis of the performance of the drain and sewer system; a review of the available information including the evolution of failures and performance deficiencies over time. The individual pipeline lengths and other components shall be described with the existing information, in order to optimise the rehabilitation programme. It is advisable to carry out an analysis of the information to be able to determine: the extent and the nature of the structural defects, leak tightness, hydraulic deficiencies and mechanical damage and chemical attack (corrosion and abrasion); the cause of these failures and performance deficiencies; the environmental impact of the defect. This analysis is carried out using available information including the results of the specific investigations carried out to develop the programme (see 6.3).
The results of the assessment should be checked with the assessment made during the production of the integrated sewer system management plan and if there are significant differences the plan should be reviewed to ensure that it is still valid.
6.5 Develop the programme 6.5.1 Introduction The rehabilitation programme comprises a number of projects which together shall meet the rehabilitation objectives. The programme shall define the scope and objectives of each project in the programme. The programme should include the phasing of the projects including the relationship to any external constraints such as budgets, new developments, and interactions with other utility or development programmes (e.g. highway works). The programme shall take account of the safety principles in EN 752:2008, Clause 7. The programme should specify the classes of solutions (see Table 2) to be adopted. The process of developing the programme is summarised in Figure 3 below.
Figure 3 — The solution development process SIST EN 14654-2:2013
EN 14654-2:2013 (E) 12 6.5.2 Developing integrated solutions To meet the rehabilitation objectives, detailed solutions should be developed in accordance with
any current rehabilitation plan for the catchment. This should include issues relating to new development and solutions involving major upgrading work and maintenance, as well as changes to operational practices. Within this framework a number of feasible options should be developed.
Where appropriate the options should include solutions that address a number of problems. Examples include:
replacement of a pipe to resolve a structural problem could also be used to resolve a hydraulic problem on a neighbouring area by diverting flow from a neighbouring area into the new pipe;
reduction of flows could be used both to reduce flooding and to reduce discharges from combined sewer overflows.
The assessment of each performance deficiency identified in the rehabilitation plan should be reviewed taking account of the additional information collected in developing the programme (see 6.3 and 6.4). The options should specify the group and class of solution. Examples of solutions are given in Table 2 below.
Table 2 — Solution types, groups and classes for rehabilitation Type Group Class Hydraulic Maximise use of existing flow capacity. Removal of constrictions. Reducing hydraulic pipeline roughness (including head losses at structures, junctions, etc.). Cleansing. Source control – Reducing the hydraulic input to the drain or sewer system. Diversion of surface water flows to infiltration drainage systems or pervious areas. Use of porous pavements. Diversion of flows to another system. Manage surface water on the surface.
Reduction of infiltration and inflow of extraneous water.
Attenuate peak flows. Utilisation of existing storage potential within the system (strategically placed flow controls). Utilisation of surface storage (including storage within the property boundary). Provision of additional storage (tank sewer or detention tank).
Increase drain or sewer system flow capacity. Replacement with larger pipe. Construction of additional pipeline. Environmental
Reduce pollutant inputs to system. Sediment basins and grit separators.
Use of vegetation to absorb pollutants from runoff before entering the system. Controlling inputs (e.g. trade effluents).
Decrease planned pollutant discharges to receiving waters. Increase of flows to treatment (see hydraulic solutions above). SIST EN 14654-2:2013
EN 14654-2:2013 (E) 13 Type Group Class Treatment of surface water discharges (e.g. by separators, retention ponds, etc.). Improve solids retention and hydraulic performance of combined sewer overflows. Real time control.
Decrease impact by relocation of points of discharge.
Reduce exfiltration by rehabilitation measures. Repair techniques (e.g. sealing leaks). Renovation techniques (e.g. provision of watertight lining). Replacement of pipeline using open-cut or trench-less techniques.
Structural Protect fabric of drain or sewer by provision of appropriate linings or internal coatings.
Rehabilitate fabric of pipeline. Repair (see EN 15885). Renovation (see EN 15885). Replacement.
Operational Planned inspection and cleaning of a drain or sewer. The management and control of sewer cleaning activities should be carried out in accordance with EN 14654-1.
Increased frequency of maintenance of pumps or pumping stations.
This list is not exhaustive.
Examples of the decision processes for considering solutions are given in Figures 4 and 5. Figure 4 gives an example of the decision process for the solutions involving only structural rehabilitation of the fabric of pipelines and Figure 5 gives an example of the process for solutions involving hydraulic rehabilitation.
SIST EN 14654-2:2013
EN 14654-2:2013 (E) 14
Figure 4 — Example of process for selection of technique class for structural rehabilitation of p
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