1、December 2014Translation 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、 13.300; 23.020.20!%Zi“2275570www.din.deDDIN EN 14433Tanks for the transport of dangerous goods Tank equipment for the transport of liquid chemicals and liquefiedgases Foot valves;English version EN 14433:2014,English translation of DIN EN 14433:2014-12Tanks fr die Befrderung gefhrlicher Gter Ausrst
3、ung fr Tanks fr die Befrderung von flssigen Chemieprodukten undFlssiggasen Bodenventile;Englische Fassung EN 14433:2014,Englische bersetzung von DIN EN 14433:2014-12Citernes de transport de matires dangereuses quipements de la citerne pour le transport de produits chimiques liquides et de gazliqufis
4、 Clapets de fond;Version anglaise EN 14433:2014,Traduction anglaise de DIN EN 14433:2014-12SupersedesDIN EN 14433:2006-07www.beuth.deIn case of doubt, the German-language original shall be considered authoritative.Document comprises 14 pages11.14 DIN EN 14433:2014-12 2 A comma is used as the decimal
5、 marker. National foreword This document (EN 14433:2014) has been prepared by Technical Committee CEN/TC 296 “Tanks for the transport of dangerous goods” (Secretariat: AFNOR, France). The responsible German body involved in its preparation was the DIN-Normenausschuss Tankanlagen (DIN Standards Commi
6、ttee Tank Installations), Working Committee NA 104-02-09 AA Ausrstung fr Tanks fr die Befrderung flssiger Chemieprodukte. Amendments This standard differs from DIN EN 14433:2006-07 as follows: a) the scope of the standard has been extended to include liquefied gases; b) the references to ADR/RID hav
7、e 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. Previous editions DIN EN 14433: 2006-07 EN 14433October 2014 ICS 13.300; 23.020.20 Supersedes EN 14433:2006Engli
8、sh VersionTanks for the transport of dangerous goods - Tank equipmentfor the transport of liquid chemicals and liquefied gases -Foot valvesCiternes de transport de matires dangereuses - quipements de la citerne pour le transport de produits chimiques liquides et de gaz liqufis - Clapets de fond Tank
9、s fr die Befrderung gefhrlicher Gter - Ausrstung fr Tanks fr die Befrderung von flssigen Chemieprodukten und Flssiggasen - Bodenventile 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 conditio
10、ns 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 exists in
11、 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 standard
12、s bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, 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, Sloven
13、ia, Spain, Sweden, Switzerland, Turkey andUnited Kingdom. 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 14433:2014 EEUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT
14、 EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGEUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN 14433:2014 (E) 2 Contents Page Foreword 3 1 Scope 4 2 Normative references 4 3 Terms and definitions . 4 4 Function 5 5 Design and materials . 5 5.1 General 5 5.2 Design . 5 5.3 Materials . 6 6 T
15、est media 6 6.1 Hydraulic tests . 6 6.2 Pneumatic tests . 6 7 Type tests . 6 7.1 General 6 7.2 Valve casing hydraulic pressure test 6 7.3 Valve assembly pressure test 6 7.4 Closure, casing and valve assembly pneumatic tightness tests . 7 7.5 Cyclic test . 7 7.6 Breakaway test . 7 8 Production tests.
16、 8 8.1 General 8 8.2 Function test 8 8.3 Valve casing pressure test . 9 8.4 Closure, casing and valve assembly pneumatic tests. 9 9 Marking . 9 10 Supply requirements . 9 10.1 Order information 9 10.2 Installation and operation . 9 Annex A (normative) Verification of valve design type . 10 Annex B (
17、informative) Examples of breakaway vectors. 11 Bibliography 12 DIN EN 14433:2014-12EN 14433:2014 (E) 3 Foreword This document (EN 14433:2014) 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 Standar
18、d shall be given the status 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 doc
19、ument 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 14433:2006. This document has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Assoc
20、iation. This European Standard 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
21、temporary non- compliances with the clauses of this standard. Compared to EN 14433:2006 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 s
22、tandard; c) the normative 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, Bulgari
23、a, Croatia, Cyprus, 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, Turke
24、y and the United Kingdom. DIN EN 14433:2014-12EN 14433:2014 (E) 4 1 Scope This European Standard specifies the requirements for foot 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. It is applicable to me
25、tallic equipment for use on tanks with gravity and/or pressure bottom loading and discharge for liquid chemicals and liquefied gases. It includes carbon dioxide while excluding refrigerated liquefied gases. NOTE The standard is also applicable to liquefied gases including LPG, however, for a dedicat
26、ed 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 references, only the edition cited applies. For undated references, the latest edition of the referenc
27、ed document (including any amendments) applies. 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 - Testing of metallic valves - Part 2: Tests, test procedures
28、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 steel valve shells EN 12516-3:2002, Valves - Shell desi
29、gn 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 definitions For the purposes of this document, the followin
30、g 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 3.2 maximum allowable working pressure MAWP maximum pressure up to which the valve can be operated, not m
31、ore than the test pressure divided by 1,3 (liquified gases) respectively 1,5 (liquids) SOURCE: ADR/RID chapter 6.7 DIN EN 14433:2014-12EN 14433:2014 (E) 5 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 conven
32、ient round number approximately equal to the manufacturing dimension in millimetres SOURCE: EN ISO 11299-1:2013 4 Function The footvalve is a primary valve located in the lower part of the tank to allow the controlled loading and discharge of the product and to ensure leaktightness in the closed con
33、dition. 5 Design and materials 5.1 General The footvalve shall be designed for a working pressure of at least 300 kPa. The footvalve shall normally be a non-pressure balanced design. If the valve is a pressure balanced design, a surge pressure of 5 times the MWP shall not jeopardize the tightness of
34、 the housing or the function of the valve. The manufacturer shall specify in drawings and other papers, the design and the materials of the footvalve. The valve specification shall include information regarding mating tank flange details. 5.2 Design 5.2.1 The valve shall provide a closure located wi
35、thin the tank shell. 5.2.2 The valve closure shall be positioned so that the pressure in the tank acts to increase the force on the valve seat, and shall be so designed as to prevent self-opening of the valve. 5.2.3 The opening of the valve shall be such as to give a minimum flow path through the va
36、lve of a diameter equal to the DN designation of the valve. 5.2.4 The operating mechanism shall be protected from inadvertent operation in transit either by a latching device or by locating within an enclosure. 5.2.5 The internal stop-valve of all filling and all discharge openings of tanks (for tan
37、k containers with a capacity greater than 1 m3) intended for the carriage of liquefied flammable or toxic gases shall be instant-closing and shall close automatically in the event of an unintended movement of the tank or in the event of fire. It shall also be possible to operate the internal stop-va
38、lve by remote control. 5.2.6 The operating mechanism of each valve shall have an indicator for the direction of opening and/or closing. 5.2.7 The external valve casing shall have a weakened section (e.g. a shear groove in the external casing or other appropriate means) so positioned that should the
39、valve casing be removed by a severe impact, the sealing capability of the valve shall not be affected. This requires that, in the case of a bottom-operated valve, the operating mechanism of the valve be not directly connected to the valve closure. DIN EN 14433:2014-12EN 14433:2014 (E) 6 5.2.8 Regard
40、ing 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, with the equipment, the material specification for those parts that may come into contact with the product.
41、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 possible, for the valve casing material shall be permanently marked on the valve casing. Should no EN exist then the appropriate national standa
42、rd 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 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 val
43、ve used for testing shall conform to 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 7.6 shall be carried out under ambient conditions. If the valve
44、 is required to operate outside the temperature range 40 C to +50 C, the design shall be taken into account either in the type testing or by 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/va
45、lve 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, using a test medium conforming to 6.1 at a pressure equal to a minimum of 2,25 times the MWP or 400 kPa whichever is the greater. The te
46、st 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 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 MW
47、P (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 defined in EN 12266-1:2012, Table A.5. Each assembly pressure test shall be carried out: a) with the valve in the closed positio
48、n and the outlet open to test for leakage from the seats; DIN EN 14433:2014-12EN 14433:2014 (E) 7 b) with the valve in the open position and the outlet closed off to test for leakage from gland seals and body joints. 7.4 Closure, casing and valve assembly pneumatic tightness tests For each design of
49、 the valve, as defined in Annex A, the closure, the casing and 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 valve closure, casing and valve assembly shall be totally immersed in a water bath, or, where total immersion of the valve closure, casing and valve assembly is not possible, a suitable leak detection fluid shall be applied. The test p
