BS-EN-12050-2-2001.pdf

| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | BRITISH STANDARD BS EN 12050-2:2001 The European Standard EN 12050-2:2000 has the status of a British Standard ICS 13.060.30; 91.140.80 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW Wastewater lifting plants for buildings and sites Ð Principles of construction and testing Ð Part 2: Lifting plants for faecal-free wastewater This British Standard, having been prepared under the direction of the Sector Committee for Building and Civil Engineering, was published under the authority of the Standards Committee and comes into effect on 15 February 2001 BSI 02-2001 ISBN 0 580 36908 0 BS EN 12050-2:2001 Amendments issued since publication Amd. No.DateComments National foreword This British Standard is the official English language version of EN 12050-2:2000. The UK participation in its preparation was entrusted to Technical Committee B/505, Wastewater engineering, which has the responsibility to: Ð aid enquirers to understand the text; Ð present to the responsible European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; Ð monitor related international and European developments and promulgate them in the UK. A list of organizations represented on this committee can be obtained on request to its secretary. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Standards Catalogue under the section entitled ªInternational Standards Correspondence Indexº, or by using the ªFindº facility of the BSI Standards Electronic Catalogue. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 16, an inside back cover and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM EN 12050-2 December 2000 ICS 91.140.80 English version Wastewater lifting plants for buildings and sites Principles of construction and testing Part 2: Lifting plants for faecal-free wastewater Stations de relevage d'effluents pour les bâtiments et terrains Principes de construction et d'essai Partie 2: Stations de relevage pour effluents exempts de matières fécales Abwasserhebeanlagen für die Gebäude- und Grundstücksentwässerung Bau- und Prüfgrundsätze Teil 2: Abwasserhebeanlagen für fäkalienfreies Abwasser This European Standard was approved by CEN on 1 December 2000. 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 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 Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG Management Centre: rue de Stassart, 36 B-1050 Brussels © 2000 CENAll rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 12050-2:2000 E Page 2 EN 12050-2:2000 © BSI 02-2001 Contents Page Foreword3 1Scope3 2Normative references .3 3Terms and definitions.4 4Requirements.4 4.1Control equipment .4 4.2Electrical equipment 4 4.3Manufacturer's statement 5 4.4Collection tank.5 5Construction principles5 5.1Pumping of solids 5 5.2Pipe connections .5 5.3Fixing devices5 5.4Ventilation5 5.5Minimum flow velocity5 5.6Minimum allowable solids passage of the plant 6 5.7Minimum size of discharge connections6 6Materials.6 7Testing documentation and samples to be tested6 8Testing7 8.1General requirements7 8.2Test conditions 7 8.3Temperature resistance.7 8.4Lifting effectiveness.7 8.5Water tightness of collection tank8 9Conformity evaluation8 9.1General requirements8 9.2Initial testing of the products (type testing)8 9.3Factory production control (FPC) carried out by the manufacturer (internal conformity evaluation) .8 9.4Non-conforming products 9 10Marking.9 11Installation, operation and maintenance9 Annex A (normative) Additional requirements10 Annex B (informative) Recommended materials.11 Annex C (informative) Conformity evaluation by an independent third party (third party evaluation)12 Annex Z (informative) Links with the EU Construction Products Directive (89/106)13 Bibliography16 Page 3 EN 12050-2:2000 © BSI 02-2001 Foreword This European Standard has been prepared by Technical Committee CEN/TC 165, Wastewater engineering, the Secretariat of which is held by DIN. This part of this European Standard for wastewater lifting plants for buildings and sites was prepared by Task Group 4, Wastewater lifting plants, of Working Group WG 21, Drainage systems within buildings, of CEN Technical Committee TC 165, Wastewater engineering. Lifting plants for faecal-free wastewater described in this part of this European Standard may be used for drainage of buildings and external areas. This is the second of a total of four parts of the standard series EN 12050 with the following titles: Part 1: Lifting plants for wastewater containing faecal matter; Part 2: Lifting plants for faecal-free wastewater; Part 3: Lifting plants for wastewater containing faecal matter for limited applications; Part 4: Non-return valves for faecal-free wastewater and wastewater containing faecal matter. 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 June 2001, and conflicting national standards shall be withdrawn at the latest by September 2002. This European Standard has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association, and supports essential requirements of EU Directive(s). For relationship with EU Directive(s), see informative annex Z, which is an integral part of this standard. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom. Annex A is normative. The annexes B, C and Z are informative. 1Scope This part of this European Standard applies to lifting plants for faecal-free wastewater in buildings and sites. It specifies methods for drainage of locations below flood level to prevent any backflow of wastewater into the building. This part of this European Standard contains general requirements, basic construction and testing principles, together with information on materials and conformity evaluation. Construction and testing requirements for non-return valves used in effluent lifting plants are given in EN 12050-4. NOTE For pumping installations for drain and sewer systems see also EN 752-6. 2Normative references This European Standard incorporates, by dated or undated reference, provisions from other publications. These normative references are cited at the appropriate places in the text and the publications are listed hereafter. For dated references, subsequent amendments to or revisions of any of these publications apply to this European Standard only when incorporated in it by amendment or revision. For undated references the latest edition of the publication referred to applies (including amendments). EN 124, Gully tops and manhole tops for vehicular and pedestrian areas Design requirements, type testing, marking, quality control. EN 752-6, Drain and sewer systems outside buildings Part 6: Pumping installations. EN 1085:1997, Waste water treatment Vocabulary. EN 12050-1:2001, Wastewater lifting plants for buildings and sites Principles of construction and testing Part 1: Lifting plants for wastewater containing faecal matter. Page 4 EN 12050-2:2000 © BSI 02-2001 EN 12050-4, Wastewater lifting plants for buildings and sites Principles of construction and testing Part 4: Non-return valves for faecal-free wastewater and wastewater containing faecal matter. EN 12056-1, Gravity drainage systems inside buildings Part 1: General and performance requirements. EN 12056-4, Gravity drainage systems inside buildings Part 4: Wastewater lifting plants, layout and calculation. EN 12566-1, Small wastewater treatment systems for up to 50 PT Part 1: Prefabricated septic tanks. EN 12639:2000, Liquid pumps and pump units Noise test code Grade 2 and grade 3 of accuracy. EN 60529, Degrees of protection provided by enclosures (IP code) (IEC 60529: 1989). ISO 9906, Rotodynamic pumps Hydraulic performance acceptance tests Grades 1 and 2. 3Terms and definitions For the purposes of this standard, the definitions given in EN 1085:1997 and the following apply. 3.1 lifting plant for faecal-free wastewater device for the collection and automatic lifting of faecal-free wastewater to a height above flood level NOTE A non-return valve according to EN 12050-4 is a component of the plant. 3.2 collection tank for faecal-free wastewater unpressurized part of a faecal-free lifting plant in which the incoming wastewater is stored prior to lifting 3.3 useful volume volume in the collection tank between switch-on level and switch-off level EN 12050-1:2001 3.4 pumping device for faecal-free wastewater component of a faecal-free lifting plant which pumps the wastewater out of the collection tank to a height above flood level 3.5 warning device device which gives a signal if a malfunction occurs EN 12050-1:2001 3.6 initial testing (type testing) testing to demonstrate that a plant conforms to all requirements of this standard 4Requirements 4.1Control equipment Faecal-free lifting plants shall be fitted with control equipment for automatic operation of the plant. Manual operation shall also be possible, if necessary by activating the switching device for automatic control. 4.2Electrical equipment Electrical equipment shall comply with the appropriate valid IEC Standard. If the electrical equipment is located in a well ventilated space and not subject to possible flooding, it shall comply at least with Protection Type IP 44 according to EN 60529. In spaces designed other than this, the required Protection Type according to EN 60529 depends on the means of installation. Page 5 EN 12050-2:2000 © BSI 02-2001 4.3Manufacturers statement The manufacturer shall state the hydraulic performance characteristics (head and flow) together with the maximum power consumption and maximum current consumption according to ISO 9906 grade 2. 4.4Collection tank Collection tanks shall be covered (see EN 124) and watertight. The structural design of collection tanks outside the building shall be in accordance with EN 752-6. 5Construction principles 5.1Pumping of solids The plant shall be capable of pumping faecal-free domestic wastewater or rainwater as defined in EN 12056-1 which may contain sand particles and other solids up to 8 mm size. 5.2Pipe connections The dimensions of inlet, discharge and ventilating connections shall permit the use of standard pipe sizes. Connections shall be flexible and shall withstand the maximum operating pump pressure without leaking. 5.3Fixing devices Lifting plants for faecal-free wastewater with collection tank shall incorporate fixing devices to prevent rotation or floatation. 5.4Ventilation The collection tank shall be adequately ventilated. 5.5Minimum flow velocity The flow velocity in the discharge pipework shall be at least 0,7 m/s at the duty point. The duty point shall be calculated according to EN 12056-4. The minimum flow rate shall be calculated in accordance with equation (1). Where: vis the minimum flow velocity in the discharge pipework = 0,7 m/s; diis the internal diameter of the pipe in mm; Qminis the minimum flow rate in l/s. d v = Q i 2 3- min 10 4 ? (1) Page 6 EN 12050-2:2000 © BSI 02-2001 Key a) Flow rate Q in l/s b) Pipe internal diameter di in mm c)Flow rate Q in m3/h Figure 1 Relationship between flow and pipe internal diameter of the discharge line 5.6Minimum allowable solids passage of the plant There shall be a minimum 10 mm free passage through the entire plant. 5.7Minimum size of discharge connections Discharge connections and non-return valves shall be at least DN 32. 6Materials Materials used shall be adequate to meet the demands of installation, operation, shall comply with the requirements of this standard and shall not release dangerous substances. Examples of suitable materials for the construction of wastewater lifting plants are given in annex B (informative). For materials where corrosion protection is necessary, such materials shall conform to the relevant corrosion protection requirements in force in the place of use of the plant. 7Testing documentation and samples to be tested For the initial testing the following documentation shall be provided: drawings, including information on materials used; operating and maintenance instructions (acceptable in manuscript form). The initial testing shall be carried out on the wastewater lifting plant with the lowest rated performance from each series. Page 7 EN 12050-2:2000 © BSI 02-2001 8Testing 8.1General requirements Testing shall be carried out on a plant that complies with the shape, dimensions and materials given in the testing documentation. The test shall demonstrate compliance with the requirements of this standard. The water temperature during the test shall not exceed 35 °C. 8.2Test conditions The hydraulic and electrical characteristics supplied by the manufacturer shall be confirmed, the hydraulic characteristics in accordance with grade 2 of ISO 9906, and shall conform with this standard. Before commencing testing, the pumping device shall be run continuously for at least 10 min. Testing of hydraulic and