1、December 2014Translation by DIN-Sprachendienst.English price group 8No 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、 13.300; 23.020.20!%Zg“2275568www.din.deDDIN EN 14432Tanks for the transport of dangerous goods Tank equipment for the transport of liquid chemicals and liquefiedgases Product discharge and air inlet valves;English version EN 14432:2014,English translation of DIN EN 14432:2014-12Tanks fr die Befrder
3、ung gefhrlicher Gter Ausrstung fr Tanks fr die Befrderung von flssigen Chemieprodukten undFlssiggasen Produktabsperr- und Gaswechselventile;Englische Fassung EN 14432:2014,Englische bersetzung von DIN EN 14432:2014-12Citernes de transport de matires dangereuses quipements de la citerne pour le trans
4、port de produits chimiques liquides et de gazliqufis Vannes de mise en pression de la citerne ou de dchargement du produit;Version anglaise EN 14432:2014,Traduction anglaise de DIN EN 14432:2014-12SupersedesDIN EN 14432:2006-07www.beuth.deIn case of doubt, the German-language original shall be consi
5、dered authoritative.Document comprises 12 pages11.14 DIN EN 14432:2014-12 2 A comma is used as the decimal marker. National foreword This document (EN 14432:2014) has been prepared by Technical Committee CEN/TC 296 “Tanks for the transport of dangerous goods” (Secretariat: AFNOR, France). The respon
6、sible German body involved in its preparation was the DIN-Normenausschuss Tankanlagen (DIN Standards Committee Tank Installations), Working Committee NA 104-02-09 AA Ausrstung fr Tanks fr die Befrderung flssiger Chemieprodukte. Amendments This standard differs from DIN EN 14432:2006-07 as follows: a
7、) the scope of the standard has been extended to include liquefied gases; b) the references to ADR/RID have been included in the respective clauses of the main part of the standard; c) normative references have been updated; d) the test conditions (test pressure, hold time) have been changed. Previo
8、us editions DIN EN 14432: 2006-07 EN 14432 October 2014 ICS 13.300; 23.020.20 Supersedes EN 14432:2006English Version Tanks for the transport of dangerous goods - Tank equipment for the transport of liquid chemicals and liquefied gases - Product discharge and air inlet valves Citernes de transport d
9、e matires dangereuses - quipements de la citerne pour le transport de produits chimiques liquides et de gaz liqufis - Vannes de mise en pression de la citerne ou de dchargement du produit Tanks fr die Befrderung gefhrlicher Gter - Ausrstung fr Tanks fr die Befrderung von flssigen Chemieprodukten und
10、 Flssiggasen - Produktabsperr- und Gaswechselventile This European Standard was approved by CEN on 30 August 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
11、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
12、 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, E
13、stonia, 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. CEN-CENELEC Management C
14、entre: 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 14432:2014 EEUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGEUROPEAN STANDARDNORME EURO
15、PENNEEUROPISCHE NORMEN 14432:2014 (E) 2 Contents Page Foreword 3 1 Scope 4 2 Normative references 4 3 Terms and definitions . 4 4 Functions 5 5 Design and materials . 5 6 Test media 6 7 Type tests . 6 8 Production tests. 7 9 Marking . 8 10 Supply requirements . 8 Annex A (normative) Verification of
16、valve design type . 9 Bibliography 10 DIN EN 14432:2014-12EN 14432:2014 (E) 3 Foreword This document (EN 14432:2014) has been prepared by Technical Committee CEN/TC 296 “Tanks for transport of dangerous goods”, the secretariat of which is held by AFNOR. This European Standard shall be given the stat
17、us of a national standard, either by publication of an identical text or by endorsement, at the latest by April 2015 and conflicting national standards shall be withdrawn at the latest by April 2015. Attention is drawn to the possibility that some of the elements of this document may be the subject
18、of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. This document supersedes EN 14432:2006. This document has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association. This European Sta
19、ndard has been submitted for reference into: the RID 1; and the technical annexes of the ADR 2. NOTE These regulations take precedence over any clause of this standard. It is emphasised that RID/ADR/ADN are being revised regularly at intervals of two years which may lead to temporary non-compliances
20、 with the clauses of this standard. Compared to EN 14432:2006 the following changes have been made: a) the scope of the standard has been enlarged to include liquefied gases; b) the references to ADR/RID have been included in the respective clauses of the main part of the standard; c) the normative
21、references have been updated; d) change of test conditions (test pressure, hold time). 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
22、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.
23、DIN EN 14432:2014-12EN 14432:2014 (E) 4 1 Scope This European Standard specifies the requirements for product discharge and air inlet valves for use on transportable tanks with a minimum working pressure greater than 50 kPa for the transport of dangerous goods by road and rail. NOTE 1 The term valve
24、 includes ball valves as well as butterfly valves and similar closure devices. It is applicable to metallic equipment for use on tanks with gravity and/or pressure filling and discharge for liquid chemicals and liquefied gases. It includes carbon dioxide while excluding refrigerated liquefied gases.
25、 NOTE 2 The standard is also applicable to liquefied gases including LPG, however, for a dedicated LPG standard see EN 13175 3. 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 refere
26、nces, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 736-1, Valves - Terminology - Part 1: Definition of types of valves EN 12266-1:2012, Industrial valves - Testing of metallic valves - Part 1: Pressure te
27、sts, test procedures and acceptance criteria - Mandatory requirements EN 12266-2:2012, Industrial valves - Testing of metallic valves - Part 2: Tests, test procedures and acceptance criteria - Supplementary requirements EN 12516-1, Industrial valves - Shell design strength - Part 1: Tabulation metho
28、d for steel valve shells EN 12516-2, Industrial valves - Shell design strength - Part 2: Calculation method for steel valve shells EN 12516-3:2002, Valves - Shell design strength - Part 3: Experimental method EN 13445-1, Unfired pressure vessels - Part 1: General EN ISO 11299-1:2013, Plastics piping
29、 systems for renovation of underground gas supply networks - Part 1: General (ISO 11299-1:2011) 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 maximum working pressure MWP maximum pressure up to which the valve can be operated, not more than
30、 the test pressure divided by 1,3 SOURCE: ADR/RID chapter 6.8 DIN EN 14432:2014-12EN 14432:2014 (E) 5 3.2 maximum allowable working pressure MAWP maximum pressure up to which the valve can be operated, not more than the test pressure divided by 1,3 (liquified gases) respectively 1,5 (liquids) SOURCE
31、: ADR/RID chapter 6.7 3.3 test pressure the pressure used for the pressure tests 3.4 nominal size DN numerical designation of the size of a component which is a convenient round number approximately equal to the manufacturing dimension in millimetres SOURCE: EN ISO 11299-1:2013 4 Functions 4.1 The p
32、roduct discharge valve is a secondary stop valve for tank bottom discharge (liquid chemicals and liquefied gases) and a primary stop valve for tank top discharge (liquid chemicals). For tanks intended for transportation of dangerous goods, it is used for the unloading and loading of the product. 4.2
33、 The air inlet valve is a primary stop valve according to EN 736-1; it provides a closure on the tank to which a pressurizing or vapour recovery line may be attached. 5 Design and materials 5.1 General The manufacturer shall specify, in drawings and other papers, the design and the materials of the
34、product discharge or air inlet valve. Where non-standard flange attachments are used, the valve specification shall include information regarding mating details of the tank flange. 5.2 Design 5.2.1 The valve shall be a stop valve as defined in EN 736-1. 5.2.2 The operating mechanism shall be protect
35、ed from inadvertent operation in transit either by a latching device or by locating within an enclosure. 5.2.3 As a minimum, each valve shall be marked with the direction of opening of the operating mechanism. 5.2.4 Regarding the calculation of flanges and body wall thickness, the requirements given
36、 in EN 12516-1, EN 12516-2 and EN 12516-3 or EN 13445-1 apply. 5.3 Materials 5.3.1 The manufacturer shall provide, with the equipment, the material specification for those parts that may come into contact with the product. DIN EN 14432:2014-12EN 14432:2014 (E) 6 5.3.2 The material elongation at frac
37、ture of the pressure-loaded components of the valve shall be a minimum of 12 %. 5.3.3 The relevant EN reference, where possible, for the valve casing material shall be permanently marked on the valve casing. Should no EN exist then the appropriate national standard designation may be used. 6 Test me
38、dia 6.1 Hydraulic tests Hydraulic tests shall be carried out using a fluid in accordance with EN 12266-2:2012, A.1.5. 6.2 Pneumatic tests Pneumatic tests shall be carried out using a gas in accordance with EN 12266-2:2012, A.1.5. 7 Type tests 7.1 General Each valve used for testing shall conform to
39、the drawings and dimensions specified and specification provided by the manufacturer. Each design of valve as verified in Annex A shall be subjected to a type test. Type testing according to 7.2 to 7.5 shall be carried out under ambient conditions. If the valve is required to operate outside the tem
40、perature range 40 C to +50 C, the design shall be taken into account either by the type testing or a validated calculation method. For the calculation of the test pressure, EN 12516-3:2002, 6.3 and 6.4 apply. The tests shall be carried out with the casing/valve attached to a flange equivalent to tha
41、t for which its use is intended. 7.2 Valve casing hydraulic pressure test The valve casing shall be hydraulically tested, using a test medium conforming to 6.1, at a pressure equal to 2,25 times the MWP, or 400 kPa, whichever is the greater. The test pressure shall be maintained for a minimum of 5 m
42、in on the valve casing without permanent deformation occurring. 7.3 Valve assembly pressure test The valve assembly shall be hydraulically or pneumatically tested, using a test medium conforming to 6.1 or 6.2 at a pressure equal to 1,5 times the MWP (MAWP) or 400 kPa, whichever is the greater. The t
43、est pressure shall be maintained for a minimum of 10 min on the valve assembly. The leakage shall not exceed Rate A as defined in EN 12266-1:2012, Table A.5. Each assembly pressure test shall be carried out: a) with the valve in the closed position and the outlet open to test for leakage from the se
44、ats; b) with the valve in the open position and the outlet closed off to test for leakage from gland seals or body joints. 7.4 Valve assembly pneumatic tightness test The valve assembly shall be pneumatically tested, using a test medium conforming to 6.2, at pressures equal to 20 kPa and 1,0 times t
45、he MWP (MAWP). The assembly shall be totally immersed in a water bath, or, where total immersion of the valve assembly is not possible, a suitable leak detection fluid shall be applied. The test DIN EN 14432:2014-12EN 14432:2014 (E) 7 pressure shall be maintained for a minimum of 10 min on the assem
46、bly during which test period leakage shall not exceed Rate A as defined in EN 12266-1:2012, Table A.5. Each pneumatic tightness test shall be carried out: a) with the valve in the closed position and the outlet open to test for leakage from the seats; b) with the valve in the open position and the o
47、utlet closed off to test for leakage from gland seals or body joints. 7.5 Cyclic test The valve assembly shall be subjected to a mechanical cycle test to a minimum of 1 000 full cycles (“open” to “closed”) without pressure and 10 full cycles (“open” to “closed”) at MWP (MAWP) or maximum rating coupl
48、ing pressure at ambient temperature being applied. After completion of the cyclic test, the valve shall be tested in accordance with 7.4 and the leakage shall not exceed Rate A as defined in EN 12266-1:2012, Table A.5. 8 Production tests 8.1 General Each product discharge or air inlet valve produced
49、 shall conform to the drawings and other papers in which the design and the materials were specified by the manufacturer. The production tests according to 8.2 to 8.4 shall be carried out under ambient conditions. 8.2 Function test Each valve shall be opened and closed once. 8.3 Valve casing pressure test Each valve casing shall be hydraulically or pneumatically tested, using a test medium conforming to 6.1 or 6.2, at a pressure equal to 1,5
