1、October 2011 Translation by DIN-Sprachendienst.English price group 9No part of this translation may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).ICS
2、 45.060.20!$u+1“1820814www.din.deDDIN EN 12561-2Railway applications Tank wagons Part 2: Bottom emptying devices for liquid products including vapourreturnEnglish translation of DIN EN 12561-2:2011-10Bahnanwendungen Kesselwagen Teil 2: Untenliegende Entleereinrichtungen fr flssige Stoffe einschlieli
3、ch GaspendelungEnglische bersetzung von DIN EN 12561-2:2011-10Applications ferroviaires Wagon citernes Partie 2: Dispositifs de vidange par le bas pour produits liquides, y compris la rcuprationde vapeurTraduction anglaise de DIN EN 12561-2:2011-10SupersedesDIN EN 12561-2:2003-01www.beuth.deDocument
4、 comprises pagesIn case of doubt, the German-language original shall be considered authoritative.09.1114DIN EN 12561-2:2011-10 A comma is used as the decimal marker. National foreword This standard has been prepared by Technical Committee CEN/TC 256 “Railway applications” (Secretariat: DIN, Germany)
5、, Working Committee WG 20 “Tank wagons” (Secretariat: AFNOR, France). The responsible German body involved in its preparation was the Normenausschuss Fahrweg und Schienenfahrzeuge (Railway Standards Committee), Working Committee NA 087-00-10 AA Gterfahrzeuge. Amendments This standard differs from DI
6、N EN 12561-2:2003-01 as follows: a) the requirements have been brought in line with the modified RIV; b) the standard has been editorially revised. Previous editions DIN 26021: 1965-10, 1979-08, 1987-10 DIN EN 12561-2: 2003-01 2 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 12561-2 June 2011
7、ICS 13.300; 45.060.20 Supersedes EN 12561-2:2002English Version Railway applications - Tank wagons - Part 2: Bottom emptying devices for liquid products including vapour return Applications ferroviaires - Wagons citernes - Partie 2 : Dispositifs de vidange par le bas pour produits liquides, y compri
8、s la rcupration de vapeur Bahnanwendungen - Kesselwagen - Teil 2: Untenliegende Entleereinrichtun fr flssige Stoffe einschlielich Gaspendelung This European Standard was approved by CEN on 3 June 2011. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the cond
9、itions 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 exist
10、s 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 stan
11、dards 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, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and
12、United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2011 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 12561-2:
13、2011: Egen2 Contents Page Foreword 31 Scope 42 Normative references 43 Terms and definitions .44 Requirements .54.1 General 54.2 Locks and seals .54.3 Dimensions .55 Bottom discharge line .55.1 General arrangement .55.2 Internal bottom valve .65.3 External valves .65.4 External branch pipes .65.5 Ea
14、rthing devices 66 Vapour return line 77 Reserved spaces for connection devices .78 Threaded coupling .9Annex A (informative) Quick couplings for vapour return . 11Bibliography . 12Figures Figure 1 General arrangement of bottom discharge line .6Figure 2 Example of vapour line arrangement 7Figure 3 Re
15、served spaces for connection devices 8Figure 4 Coupling dimensions 9Figure 5 Cap dimensions . 10Figure A.1 Dimensions of vapour return coupling 11Table Table 1 Thread dimensions .9EN 12561-2:2011 (E) DIN EN 12561-2:2011-10 3 Foreword This document (EN 12561-2:2011) has been prepared by Technical Com
16、mittee CEN/TC 256 “Railway applications”, 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 2011, and conflicting national standards shall be withdr
17、awn at the latest by December 2011. 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 12561-2:2002. This Eur
18、opean Standard Railway applications Tank wagons consists of the following parts: Part 1: Identification plates for tank wagons for the carriage of dangerous goods; Part 2: Bottom emptying devices for liquid products including vapour return; Part 3: Bottom filling and emptying devices for gases lique
19、fied under pressure; Part 4: Devices for top filling and emptying of liquid products; Part 5: Devices for vapour return while filling or emptying of liquid products; Part 6: Manholes; Part 7: Platforms and ladders; Part 8: Heating connections. The changes made during this revision are editorial beca
20、use of the change of the title of part 1 and the necessary updates of references. 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 Repub
21、lic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. EN 12561-2:2011 (E) DIN EN 12561-2:2011-10 4 1 Scope
22、 This European Standard specifies requirements on and characteristics of bottom emptying devices on tank wagons used for the carriage of liquid substances of RID. This European Standard specifies the most important dimensions of connection devices for the emptying of the tank. Safety functions of th
23、ese devices are subject to RID requirements and not described in this document. This European Standard is applicable to bottom vapour return devices where fitted to tank wagons. This European standard applies to new tank wagons built after the 1stJanuary 2010. 2 Normative references The following re
24、ferenced documents are indispensable for the application 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 ISO 228-1, Pipe threads where pressure-tight joints are not ma
25、de on the threads Part 1: Dimensions, tolerances and designation (ISO 228-1:2000) EN ISO 286-1, Geometrical product specifications (GPS) ISO code system for tolerances on linear sizes Part 1: Basis of tolerances, deviations and fits (ISO 286-1:2010) EN 14564, Tanks for transport of dangerous goods T
26、erminology ISO 3419, Non-alloy and alloy steel butt-welding fittings ISO 4200:1991, Plain end steel tubes, welded and seamless general tables of dimensions and masses per unit length ISO 7005-1:1992, Metallic flanges Part 1: Steel flanges 3 Terms and definitions For the purposes of this document, th
27、e terms and definitions given in EN 14564 and the following apply. 3.1 auto vent valve tank ventilation device linked with the internal bottom valve, which opens simultaneously with the internal bottom valve NOTE 1 The auto vent valve is a valve that only opens during discharge. NOTE 2 As the auto v
28、ent valve remains closed during transport, it meets the requirements of RID. 3.2 stop valve part of the internal bottom valve comprising the disc, the gasket, the spring and the seat EN 12561-2:2011 (E) DIN EN 12561-2:2011-10 5 4 Requirements 4.1 General Emptying devices shall be designed to minimis
29、e product residue in all their constituent parts following loading and unloading. Tank wagons for liquid chemical and petroleum products with bottom emptying devices shall be fitted with a double arm outlet pipe designed to empty the tank and in conformity with this standard. 4.2 Locks and seals Ext
30、ernal valves as well as internal bottom valves shall be capable of being secured in their closed position to prevent any unintentional opening through impact or an inadvertent act. The operating controls of the external valves shall also be equipped with devices to which a seal can be properly attac
31、hed. For customs seals, a hole of diameter 15 mm shall be required. 4.3 Dimensions All dimensions are given in millimetres. Unless otherwise specified in this European Standard the tolerances of EN ISO 286-1 apply for all dimensions. 5 Bottom discharge line 5.1 General arrangement The bottom dischar
32、ge line shall have a nominal diameter of not less than 100 mm. The bottom discharge line shall consist of: a) ,an internal bottom valve in accordance with 5.2, except for tank wagons intended for the carriage of certain crystallisable or highly viscous substances; b) an external branch pipe; c) an e
33、xternal valve shall be fitted at each end of the branch pipe. If a threaded connection is used, it shall be in accordance with the requirements of Clause 8. NOTE A gravity coupling according to EN 13315 can be used for tank wagons transporting petroleum products. These fittings shall be arranged as
34、shown in Figure 1. EN 12561-2:2011 (E) DIN EN 12561-2:2011-10 6 Key 1 internal bottom valve 2 external valve 3 threaded coupling or flange or equivalent device 4 branch pipe Figure 1 General arrangement of bottom discharge line 5.2 Internal bottom valve Internal bottom valves and associated vent val
35、ves need to meet the requirements of RID. 5.3 External valves The flanged connections for the valves shall comply with PN 16 according to ISO 7005-1:1992, face type B. The setting whether open or closed and/or the direction of closure of external valves shall be capable of being visually verified ex
36、cept when a dry break self-sealing coupling is used. 5.4 External branch pipes The external branch pipes shall be horizontal in order to minimise product residue in the pipe following loading and unloading. It is recommended that external branch pipes be built with seamless line pipes and butt weldi
37、ng fittings (straight tees, long radius elbows, etc.) made from low temperature steel as specified in ISO 9329-3. If welded pipes are used, they shall exhibit a suitable degree of safety comparable to that of the shell itself. Dimensions of line pipes shall be as specified by serial 1 Grade F specif
38、ied in ISO 4200:1991. Dimensions of butt weld fittings shall be as specified in ISO 3419. 5.5 Earthing devices Two stainless steel earthing plates shall be welded on each side of the tank wagon. Their dimensions shall be at least 40 mm 80 mm 5 mm. They shall be positioned within the reserved space d
39、efined in Figure 3. EN 12561-2:2011 (E) DIN EN 12561-2:2011-10 7 6 Vapour return line The vapour return line where fitted shall consist of: a) an auto vent valve or at least one of the vacuum relief valves according to the requirement of 5.2; b) a branch pipe; c) at each end of the branch pipe a fla
40、nge DN 80 PN 16 and e.g. a vapour return coupling according to the requirements of Annex A (informative). Example of arrangements is given in Figure 2. Key 1 auto-vent valve 2 connecting pipe 3 coupling 4 branch pipe NOTE These figures are given only as an example. Figure 2 Example of vapour line ar
41、rangement The vapour return line shall be designed in such a way that the effective cross-sectional area shall not be less than 1 960 mm (equivalent to a 50 mm diameter pipe). Measures shall be taken to protect shells against the risk of deformation as a result of a negative internal pressure during
42、 discharge. Vacuum relief devices shall be installed either at the top of the tank or in the vapour return line. Where the rate of discharge of tank wagon exceeds 120 m3/h the cross sectional area of vapour return devices shall be increased accordingly. The structure of the vapour return line pipe s
43、hall meet the requirements specified in 5.2. The vacuum relief devices shall also operate when the vapour return devices are not connected during unloading. 7 Reserved spaces for connection devices Except for specific cases agreed between the customer and the manufacturer, the connecting faces of th
44、e discharge and vapour return couplings shall be positioned as shown in Figure 3. EN 12561-2:2011 (E) DIN EN 12561-2:2011-10 8 Dimension in millimetres Key 1 middle of tank wagon 2 tank longitudinal axle 3 reserved space 4 top of rails 5 branch pipe of discharge line 6 branch pipe of vapour return l
45、ine 7 Distance between vertical planes NOTE 1 These dimensions are given for new and empty tank wagons. NOTE 2 These dimensions are based on the international loading gauge. For domestic traffic in Great Britain and for traffic of continental tank wagons running in Great Britain, the Kinematic gauge
46、 for Great Britain rules defined in the Technical Specification for Interoperability for Freight Wagons also apply. Figure 3 Reserved spaces for connection devices Distance between vertical planes shall where possible be kept to a minimum. EN 12561-2:2011 (E) DIN EN 12561-2:2011-10 9 8 Threaded coup
47、ling Except for specific cases agreed between the customer and the manufacturer, the bottom discharge lines shall be fitted with a threaded coupling as shown in Figure 4 and given in Table 1 and caps as shown in Figure 5. The caps shall be fitted with a loss preventing device. Dimension in millimetr
48、es Figure 4 Coupling dimensions Table 1 Thread dimensions External diameter Minor diameter Pitch diameter Pitch Number of thread per 25,4 mm Radius Thread height Section Gasket d d1d2p z r t1Td3,e mm mm mm mm mm mm mm2mm 139,705 127,313 133,509 9,677 2 5/8 1,329 6,196 12 730 130 3 General limit devi
49、ations are 0,25 mm except for threads where tolerances from EN ISO 228-1 apply. EN 12561-2:2011 (E) DIN EN 12561-2:2011-10 10 Dimensions in millimetres Figure 5 Cap dimensions NOTE This figure is an example of the caps, other dimensions could be used except 55 mm, d, for Z view and 250 mm for the maximum external dimension of the cap. EN 12561-2:2011 (E) DIN EN 12561-2:2011-10 11 Annex A (informative) Quick couplings for vapour return The vapour re
