1、BSI Standards PublicationBS EN 14432:2014Tanks for the transport ofdangerous goods Tankequipment for the transport ofliquid chemicals and liquefiedgases Product discharge andair inlet valvesBS EN 14432:2014 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN 14432:2
2、014. Itsupersedes BS EN 14432:2006 which is withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee AUE/18, Tanks for the transport of dangerous goods.A list of organizations represented on this committee can beobtained on request to its secretary.This publication does
3、not purport to include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. The British Standards Institution 2014. Published by BSI StandardsLimited 2014ISBN 978 0 580 81438 9ICS 13.300; 23.020.20Compliance with a British Standard cannot confer immunity froml
4、egal obligations.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 31 October 2014.Amendments issued since publicationDate Text affectedBS EN 14432:2014EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 14432 October 2014 ICS 13.300; 23.020.20
5、 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 de matires dangereuses - quipements de la citerne pour le transport de produit
6、s 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 Flssiggasen - Produktabsperr- und Gaswechselventile This European Standard w
7、as 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 alteration. Up-to-date lists and bibliographical references concerning such n
8、ational 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 la
9、nguage 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, Gree
10、ce, 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 COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG
11、CEN-CENELEC Management Centre: 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 EBS EN 14432:2014EN 14432:2014 (E) 2 Contents Page Foreword 3 1 Scope 4 2 Normative references 4 3 Ter
12、ms 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 valve design type . 9 Bibliography 10 BS EN 14432:2014EN 14432:2014 (E) 3 Foreword This document (EN 1443
13、2:2014) 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 status of a national standard, either by publication of an identical text or by endorsement, at the latest by Apr
14、il 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 of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rig
15、hts. 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 Standard has been submitted for reference into: the RID 1; and the technical annexes of the ADR 2. NOTE These re
16、gulations 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 with the clauses of this standard. Compared to EN 14432:2006 the following changes have been made: a) the sc
17、ope 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 references have been updated; d) change of test conditions (test pressure, hold time). According to the CEN-C
18、ENELEC Internal Regulations, the national standards organizations 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,
19、 Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. BS EN 14432:2014EN 14432:2014 (E) 4 1 Scope This European Standard specifies the requirements for product dis
20、charge 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 includes ball valves as well as butterfly valves and similar closure devices. It is applicable to metallic equip
21、ment 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. NOTE 2 The standard is also applicable to liquefied gases including LPG, however, for a dedicated LPG standard s
22、ee 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 references, only the edition cited applies. For undated references, the latest edition of the referenced document (incl
23、uding 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 tests, test procedures and acceptance criteria - Mandatory requirements EN 12266-2:2012, Industrial valves - Testin
24、g of metallic valves - Part 2: Tests, test procedures and acceptance criteria - Supplementary requirements EN 12516-1, Industrial valves - Shell design strength - Part 1: Tabulation method for steel valve shells EN 12516-2, Industrial valves - Shell design strength - Part 2: Calculation method for s
25、teel 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 systems for renovation of underground gas supply networks - Part 1: General (ISO 11299-1:2011) 3 Terms and defin
26、itions 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 the test pressure divided by 1,3 SOURCE: ADR/RID chapter 6.8 BS EN 14432:2014EN 14432:2014 (E) 5 3.2 maximum all
27、owable 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: ADR/RID chapter 6.7 3.3 test pressure the pressure used for the pressure tests 3.4 nominal size DN numerical design
28、ation 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 product discharge valve is a secondary stop valve for tank bottom discharge (liquid chemicals and liquefied gases) and
29、 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 The air inlet valve is a primary stop valve according to EN 736-1; it provides a closure on the tank to which a pres
30、surizing 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 product discharge or air inlet valve. Where non-standard flange attachments are used, the valve specification shall i
31、nclude 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 protected from inadvertent operation in transit either by a latching device or by locating within an enclosure. 5.2.3 As a m
32、inimum, 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 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, wi
33、th the equipment, the material specification for those parts that may come into contact with the product. BS EN 14432:2014EN 14432:2014 (E) 6 5.3.2 The material elongation at fracture of the pressure-loaded components of the valve shall be a minimum of 12 %. 5.3.3 The relevant EN reference, where po
34、ssible, 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 media 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
35、 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 the drawings and dimensions specified and specification provided by the manufacturer. Each design of valve as verified in
36、 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 temperature range 40 C to +50 C, the design shall be taken into account either by the type testing or a validated calculatio
37、n 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 that for which its use is intended. 7.2 Valve casing hydraulic pressure test The valve casing shall be hydraulically tested,
38、 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 min on the valve casing without permanent deformation occurring. 7.3 Valve assembly pressure test The valve assembly shall
39、 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 test pressure shall be maintained for a minimum of 10 min on the valve assembly. The leakage shall not exceed Rate A as de
40、fined 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 seats; b) with the valve in the open position and the outlet closed off to test for leakage from gland seals or body joints
41、. 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 the MWP (MAWP). The assembly shall be totally immersed in a water bath, or, where total immersion of the valve assembly is
42、 not possible, a suitable leak detection fluid shall be applied. The test BS EN 14432:2014EN 14432:2014 (E) 7 pressure shall be maintained for a minimum of 10 min on the assembly during which test period leakage shall not exceed Rate A as defined in EN 12266-1:2012, Table A.5. Each pneumatic tightne
43、ss 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 outlet closed off to test for leakage from gland seals or body joints. 7.5 Cyclic test The valve assembly shall be subjected t
44、o 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 coupling pressure at ambient temperature being applied. After completion of the cyclic test, the valve shall be tested in accordan
45、ce 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 shall conform to the drawings and other papers in which the design and the materials were specified by the manufacturer. The
46、 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 p
47、ressure equal to 1,5 times the MWP (MAWP), or 400 kPa, whichever is the greater. The test pressure shall be maintained as given in EN 12266-1 on the casing and the leakage shall not exceed Rate A as defined in EN 12266-1:2012, Table A.5. 8.4 Valve assembly pneumatic tightness test Each valve assembl
48、y shall be pneumatically tested as a finally assembled device, using a test medium conforming to 6.2, at pressures equal to 20 kPa and at least 25 % of the test pressure. The assembly shall be totally immersed in a water bath, or where total immersion of the valve assembly is not possible, a suitabl
49、e leak detection fluid shall be applied. The test pressure shall be maintained as given in EN 12266-1 on the assembly and the 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 outlet closed off to test for leakage from gland seals or body joints. BS EN 14432:2014EN 14432:2014 (E) 8 9 Marking The valve shall be permanently marke
