1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS EN 13508-1:2012Investigation and assessmentof drain and sewer systemsoutside buildingsPart 1: General RequirementsBS EN 13508-1:2012 BRITISH STANDARDNational forewordThis Brit
2、ish Standard is the UK implementation of EN 13508-1:2012.It supersedes BS EN 13508-1:2003 which is withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee B/505, Wastewater engineering.A list of organizations represented on this committee can beobtained on request to it
3、s secretary.This publication does not purport to include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. The British Standards Institution 2012. Published by BSI StandardsLimited 2012ISBN 978 0 580 70190 0ICS 93.030Compliance with a British Standard canno
4、t confer immunity fromlegal obligations.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 31 October 2012.Amendments issued since publicationDate Text affectedBS EN 13508-1:2012EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 13508-1 October
5、 2012 ICS 93.030 Supersedes EN 13508-1:2003English Version Investigation and assessment of drain and sewer systems outside buildings - Part 1: General Requirements Investigation et valuation des rseaux dassainissement lextrieur des btiments - Partie 1: Exigences gnrales Untersuchung und Beurteilung
6、von Entwsserungssystemen auerhalb von Gebuden - Teil 1: Allgemeine Anforderungen This European Standard was approved by CEN on 18 August 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 na
7、tional 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 v
8、ersion 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
9、, 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 Kingd
10、om. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2012 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 13508-1:2012: EBS EN
11、 13508-1:2012EN 13508-1:2012 (E) 2 Contents Page Foreword 4Introduction .51 Scope 72 Normative references 73 Terms and definitions .74 General 75 Investigation .95.1 Introduction 95.2 Purpose of investigation .95.3 Determine the scope of the investigation 105.4 Review existing information 115.5 Upda
12、te inventory as required 135.6 Hydraulic investigation 145.6.1 Introduction . 145.6.2 Flow and water level measurement 145.6.3 Rainfall measurement 145.6.4 Hydraulic calculations 145.6.5 Other techniques 155.7 Environmental investigation 165.7.1 Introduction . 165.7.2 Review of inputs quality . 165.
13、7.3 Wastewater quality measurement . 165.7.4 Wastewater quality simulation modelling 175.7.5 Surface receiving water impact surveys 175.7.6 Surface receiving water modelling . 175.7.7 Leaktightness testing . 175.7.8 Groundwater quality investigations 175.7.9 Odour and noise surveys . 185.8 Structura
14、l investigation 185.8.1 Introduction . 185.8.2 Prepare inspection programme . 185.8.3 Visual inspection 195.8.4 Other techniques 205.9 Operational investigation . 215.9.1 Introduction . 215.9.2 Review operational activities . 225.9.3 Review events . 225.9.4 Other investigations . 226 Assessment . 22
15、6.1 Introduction . 226.2 Performance deficiencies 246.2.1 Introduction . 246.2.2 Drains and sewers, gullies, manholes and inspection chambers . 246.2.3 Combined sewer overflows and detention tanks 256.2.4 Pumping stations, rising mains and vacuum mains . 256.2.5 Insufficient hydraulic capacity 266.3
16、 Consequences of performance deficiencies . 266.3.1 General . 266.3.2 Subsidence 266.3.3 Flooding . 26BS EN 13508-1:2012EN 13508-1:2012 (E) 3 6.3.4 Pollution of groundwater and soil . 266.3.5 Pollution of surface waters. 276.3.6 Decreased treatment efficiency . 276.3.7 Other consequences . 276.4 Cau
17、ses of performance deficiencies . 276.5 Reporting 27Annex A (informative) Sources of additional information 28A.1 Austria 28A.2 Denmark . 28A.3 Finland 28A.4 France . 29A.5 Germany . 29A.6 Netherlands 30A.7 Norway 32A.8 Sweden . 32A.9 United Kingdom . 32Bibliography 33BS EN 13508-1:2012EN 13508-1:20
18、12 (E) 4 Foreword This document (EN 13508-1:2012) 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 endorsem
19、ent, at the latest by April 2013, and conflicting national standards shall be withdrawn at the latest by April 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
20、any or all such patent rights. This document supersedes EN 13508-1:2003. This European Standard, EN 13508, Investigation and assessment of drain and sewer systems outside buildings, contains the following parts: Part 1: General requirements (the present document) Part 2: Visual inspection coding sys
21、tem Other parts, dealing with other investigation and assessment aspects may be added later. In drafting this document, account has been taken of other available standards, in particular EN 752, Drain and sewer systems outside buildings. According to the CEN/CENELEC Internal Regulations, the nationa
22、l 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, Lithua
23、nia, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. BS EN 13508-1:2012EN 13508-1:2012 (E) 5 Introduction Drain and sewer systems are part of the overall wastewater system that provides a service to the
24、 community. This can be briefly described as: removal of wastewater from premises for public health and hygienic reasons; prevention of flooding in urbanised areas; protection of the environment. The overall wastewater system has four successive functions: collection; transport; treatment; discharge
25、. Drain and sewer systems provide for the collection and transport of wastewater. Historically, 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
26、 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 waters. Although many drain and sewer systems started
27、out as combined systems there are 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
28、. This concept is included in the approach of integrated sewer system management. EN 752 provides a framework for the design, construction, rehabilitation, maintenance and operation of drain and sewer systems outside buildings. This is illustrated in the upper part of Figure 1. EN 752 is supported b
29、y more detailed standards for the investigation, design, construction, organisation and control of drain and sewer systems such as those listed in the lower part of the diagram. This standard is one of a number of standards which support the general principles set out in EN 752. The relationship bet
30、ween these standards is illustrated in Figure 1. BS EN 13508-1:2012EN 13508-1:2012 (E) 6 Figure 1 Relationship between EN 752 and other drain and sewer standards BS EN 13508-1:2012EN 13508-1:2012 (E) 7 1 Scope This European Standard is applicable to the investigation and assessment of drain and sewe
31、r systems outside buildings. It is applicable to drain and sewer systems, which operate essentially under gravity, from the point where the sewage leaves a building or roof drainage system, or enters a road gully, to the point where it is discharged into a treatment works or receiving water. Drains
32、and sewers below buildings are included provided that they do not form part of the drainage system of the building. This part of this European Standard specifies general requirements for the investigation and assessment of drain and sewer systems outside buildings. 2 Normative references The followi
33、ng 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
34、 and sewer systems outside buildings EN 13508-2, Investigation and assessment of drain and sewer systems outside buildings Part 2: Visual inspection coding system EN 14654 (all parts), Management and control of cleaning operations in drains and sewers 3 Terms and definitions For the purposes of this
35、 document, the following term and definition together with those given in EN 752:2008 apply. 3.1 resilience ability of a component or group of components to continue to perform or quickly recover from an endangering incident 4 General EN 752:2008, Clause 6, describes the process for integrated sewer
36、 system management. This process involves the integrated planning of the rehabilitation, maintenance and operation of existing drain and sewer systems. This European Standard specifies general requirements for the investigation and assessment of aspects of the integrated sewer system management proc
37、edure (see Figure 2) to establish the condition of drain and sewer systems. This process can be applied to the development of the integrated sewer system management plan in accordance with EN 752:2008, Clause 6, as well as in the development of programmes of work and projects in accordance with EN 1
38、4654 (all parts). BS EN 13508-1:2012EN 13508-1:2012 (E) 8 Figure 2 Integrated sewer system management process The investigation and assessment can be used in developing the integrated sewer system management plan which includes the new development plan, rehabilitation plan, operational plan and main
39、tenance plan. It can also be used in the development of any programmes and projects to implement the integrated sewer system management plan (see EN 14654, all parts). The approach can also be applied at different levels of complexity across a sewer system. For example, it can be applied at a strate
40、gic level across a large catchment (e.g. a whole city) and then at a more detailed level in the major sub-catchments and also at the still more detailed level of individual components. The performance of the system can be measured in terms of the functional requirements of the system listed in EN 75
41、2:2008, 5.1 (for example protection from flooding, protection of surface receiving waters and maintaining the flow etc.). In some cases, it is only possible to determine the performance at one of the strategic or sub-catchment levels of detail (for example protection from flooding). In other cases,
42、performance can be determined at the component level (for example maintaining the flow). The investigation and assessment of a drain and sewer system and its components is a necessary part of the process of the establishment of the condition and the performance of the system. The components can incl
43、ude: a) gravity drains, sewers and ancillary structures such as manholes, inspection chambers, combined sewer overflows, tanks and outfalls; b) pumping installation including rising mains, vacuum mains and associated control and monitoring equipment; c) gullies and associated structures such as grit
44、 separators, light liquid separators and grease separators. BS EN 13508-1:2012EN 13508-1:2012 (E) 9 5 Investigation 5.1 Introduction The process of investigation of drain and sewer systems is outlined in EN 752:2008, 6.2. This process is summarised in Figure 3. This process involves the investigatio
45、n of the hydraulic, environmental, structural and operational condition of the system. This should be in an integrated manner as the results from many of the investigations will cover more than one of these aspects. The stages of the investigation are described in more detail in Figure 3. Figure 3 T
46、he process for investigation (based on EN 752:2008, Figure 6) 5.2 Purpose of investigation Prior to commencing the investigation, the purpose of the investigation should be established. The purpose of the investigation can include: a) an investigation to establish an overview of the condition and pe
47、rformance of a drain and sewer system in order to produce an integrated sewer system management plan in accordance with EN 752:2008, Clause 6; b) a more detailed investigation in order to establish a programme of measures to implement the proposals in an integrated sewer system management plan in ac
48、cordance with EN 14654 (all parts); BS EN 13508-1:2012EN 13508-1:2012 (E) 10 c) investigation as part of the development of a specification for works to implement all or part of an integrated sewer system management plan; d) the investigation of a drain or sewer system following an incident in order
49、 to determine the maintenance requirements; e) an investigation of the resilience of a drain or sewer system to various hazards or threats. 5.3 Determine the scope of the investigation The scope of the investigation should be determined, including: a) the geographical extent of the investigation; b) the level of detail at which the system is to be investigated (e.g. at strategic level of whole catchment,
