DIN EN 14129-2014 LPG Equipment and accessories - Pressure relief valves for LPG pressure vessels German version EN 14129 2014《LPG设备和附件 液化石油气压力容器的泄压阀 德文版本EN 14129-2014》.pdf

1、May 2014 Translation by DIN-Sprachendienst.English price group 15No 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 23

2、.060.40!%2English version EN 14129:2014,English translation of DIN EN 14129:2014-05Flssiggas-Gerte und Ausrstungsteile Sicherheitsventile fr Druckbehlter fr Flssiggas (LPG);Englische Fassung EN 14129:2014,Englische bersetzung von DIN EN 14129:2014-05quipements pour GPL et leurs accessoires Soupapes

3、de sret pour rservoirs de GPL sous pression;Version anglaise EN 14129:2014,Traduction anglaise de DIN EN 14129:2014-05SupersedesDIN EN 14129:2005-01www.beuth.deDocument comprises 34 pagesIn case of doubt, the German-language original shall be considered authoritative.04.14DIN EN 14129:2014-05 2 A co

4、mma is used as the decimal marker. National foreword This document (EN 14129:2014) has been prepared by CEN/TC 286 “Liquefied Petroleum Gas equipment and accessories” (Secretariat: NSAI, Ireland). The responsible German body involved in its preparation was the Normenausschuss Druckgasanlagen (Pressu

5、rized Gas Installations Standards Committee), Working Committee NA 016-00-06 AA Flssiggas-Gerte und Ausrstung; Spiegelausschuss zu CEN/TC 286. Amendments This standard differs from DIN EN 14129:2005-01 as follows: a) a pilot operated pressure relief valve has been added; b) an ageing test has been a

6、dded, see Subclause 7.9 and Annex C; c) an endurance test has been added, see Subclause 7.10; d) a stress cracking test has been added, see Subclause 7.11; e) Annex D (informative) “Environment checklist” has been added. Previous editions DIN EN 14129: 2005-01 EUROPEAN STANDARD NORME EUROPENNE EUROP

7、ISCHE NORM EN 14129 February 2014 ICS 23.060.40 Supersedes EN 14129:2004English Version LPG Equipment and accessories - Pressure relief valves for LPG pressure vessels quipements pour GPL et leurs accessoires - Soupapes de scurit pour rservoirs de GPL sous pression Flssiggas-Gerte und Ausrstungsteil

8、e - Sicherheitsventile fr Druckbehlter fr Flssiggas (LPG) This European Standard was approved by CEN on 30 November 2013. 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 witho

9、ut 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 three official versions (English, French, German). A version in any other l

10、anguage 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, Den

11、mark, 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 United Kingdom. EUROPEAN COMMITTE

12、E FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG 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 14129:2014 EEN 14129:2014 (E)

13、 2 Contents Page Foreword 4 Introduction .5 1 Scope 6 2 Normative references 6 3 Terms and definitions .7 4 Operating conditions 10 5 Materials 10 5.1 General . 10 5.2 Metallic materials 10 5.3 Non-metallic components 11 5.4 Lubricants, sealants, and adhesives 11 5.5 Certification . 11 6 Design 12 6

14、.1 General . 12 6.2 Design parameters 13 6.3 Threads 14 6.4 Springs . 14 6.5 Additional requirements 14 6.6 Pressure relief valve with parallel thread . 15 6.7 Pressure relief valve for use with a changeover manifold . 15 6.8 Pilot operated pressure relief valve 15 7 Testing of the design 16 7.1 Gen

15、eral . 16 7.2 Test requirements . 17 7.3 Dimensional checks . 19 7.4 Hydraulic proof test 19 7.5 Overtorquing test 19 7.6 Start to discharge pressure test 19 7.7 Discharge capacity test 20 7.8 Leak tightness tests . 20 7.9 Ageing test 20 7.10 Endurance test 21 7.11 Stress cracking test 21 7.11.1 Gen

16、eral . 21 7.11.2 Mercurous nitrate immersion test . 21 7.11.3 Moist ammonia air stress cracking test . 21 7.12 Vacuum test . 21 7.13 Visual inspection 21 7.14 Test records 22 8 Marking 22 8.1 Pressure relief valves . 22 8.2 Thermal expansion valves . 22 8.3 Pilot operated pressure relief valve 23 9

17、Operating instructions . 23 DIN EN 14129:2014-05 EN 14129:2014 (E) 3 10 Packaging . 24 Annex A (informative) Terms used with LPG pressure relief valves . 25 Annex B (normative) Special low temperature requirements for valves . 26 Annex C (normative) Ageing test . 27 C.1 General . 27 C.2 Ultraviolet

18、light 27 C.3 Rain . 27 Annex D (informative) Environment checklist 30 Annex ZA (informative) Relationship between this European Standard and the Essential Requirements of EU Directive 97/23/EC 31 Bibliography 32 DIN EN 14129:2014-05 EN 14129:2014 (E) 4 Foreword This document (EN 14129:2014) has been

19、 prepared by Technical Committee CEN/TC 286 “Liquefied petroleum gas equipment and accessories”, the secretariat of which is held by NSAI. 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 August 20

20、14, and conflicting national standards shall be withdrawn at the latest by August 2014. 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

21、. This document supersedes EN 14129:2004. This European Standard has been submitted for reference into: the RID 9; and the technical annexes of the ADR 10. NOTE These regulations take precedence over any clause of this European Standard. It is emphasised that RID/ADR/ADN are being revised regularly

22、at intervals of two years which may lead to temporary non-compliances with the clauses of this European Standard. The major changes to this revision include the addition of: pilot operated pressure relief valve; an ageing test, see 7.9 and Annex C; an endurance test, see 7.10; and a stress cracking

23、test, see 7.11. This document 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 ZA, which is an integral part of this

24、document. 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 Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, F

25、rance, 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. DIN EN 14129:2014-05 EN 14129:2014 (E) 5 Introduction This European Standard

26、calls for the use of substances and procedures that may be injurious to health and/or the environment if adequate precautions are not taken. It refers only to technical suitability: it does not absolve the user from their legal obligations at any stage. Protection of the environment is a key politic

27、al issue in Europe and elsewhere around the world. Protection of the environment in this document is understood in a very broad sense. The phrase is used, for example, in relation to the total life-cycle aspects of a product on the environment, including expenditure of energy, and during all phases

28、of its existence, from mining of raw materials, to fabrication, packaging, distribution, use, scrapping, recycling of materials, etc. NOTE 1 Annex D comprises an environmental checklist which highlights the clauses of this European Standard that address environmental aspects. Provisions have to be r

29、estricted to a general guidance. Limit values are specified in national laws. It is recommended that manufacturers develop an environmental management policy. For guidance see the EN ISO 14000 series 6, 7 and 8. It has been assumed in the drafting of this European Standard that the execution of its

30、provisions is entrusted to appropriately qualified and experienced people. All pressures are gauge pressures unless otherwise stated. Valves designed in accordance with this standard are specifically for use in LPG applications. Valves manufactured in accordance EN ISO 4126-1 may also be used in cer

31、tain LPG applications. NOTE 2 This European Standard requires measurement of material properties, dimensions and pressures. All such measurements are subject to a degree of uncertainty due to tolerances in measuring equipment, etc. It may be beneficial to refer to the leaflet “measurement uncertaint

32、y leaflet” SP INFO 2000 27 13. DIN EN 14129:2014-05 EN 14129:2014 (E) 6 1 Scope This European Standard specifies the requirements for the design and testing of spring loaded pressure relief valves and thermal expansion valves for use in: static LPG pressure vessels, NOTE The pressure vessels can be

33、situated above ground, underground or mounded. LPG pressure vessels on road tankers, rail tankers, tank-containers or demountable tanks. This document does not address production testing. Normative Annex B prescribes testing with conditioning at - 40 C for valves for use under extreme low temperatur

34、e conditions. The requirements for pressure relief valve accessories such as isolating devices, changeover manifolds and vent pipes are specified in EN 14071. EN 14570 identifies the requirements for the pressure relief valve capacities for static pressure vessels. EN 12252 identifies the requiremen

35、ts for the pressure relief valve capacities for road tankers. Valves designed in accordance with this standard are specifically for use in LPG applications. Valves manufactured in accordance with EN ISO 4126-1 may also be used in certain LPG applications. Terms used with LPG pressure relief valves a

36、re described graphically in Annex A. 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 ref

37、erenced document (including any amendments) applies. EN 549:1994, Rubber materials for seals and diaphragms for gas appliances and gas equipment EN 751-1, Sealing materials for metallic threaded joints in contact with 1st, 2nd and 3rd family gases and hot water - Part 1: Anaerobic jointing compounds

38、 EN 751-2, Sealing materials for metallic threaded joints in contact with 1st, 2nd and 3rd family gases and hot water - Part 2: Non-hardening jointing compounds EN 751-3, Sealing materials for metallic threaded joints in contact with 1st, 2nd and 3rd family gases and hot water - Part 3: Unsintered P

39、TFE tapes EN 837-1, Pressure gauges - Part 1: Bourdon tube pressure gauges - Dimensions, metrology, requirements and testing EN 1092-1:2007+A1:2013, Flanges and their joints - Circular flanges for pipes, valves, fittings and accessories, PN designated - Part 1: Steel flanges EN 1503-1:2000, Valves -

40、 Materials for bodies, bonnets and covers - Part 1: Steels specified in European Standards DIN EN 14129:2014-05 EN 14129:2014 (E) 7 EN 1503-2:2000, Valves - Materials for bodies, bonnets and covers - Part 2: Steels other than those specified in European Standards EN 1503-3:2000, Valves - Materials f

41、or bodies, bonnets and covers - Part 3: Cast irons specified in European Standards EN 1503-4:2002, Valves - Materials for bodies, bonnets and covers - Part 4: Copper alloys specified in European Standards EN 1563:2011, Founding - Spheroidal graphite cast irons EN 10204, Metallic products - Types of

42、inspection documents EN 10270-3:2011, Steel wire for mechanical springs - Part 3: Stainless spring steel wire EN 12165:2011, Copper and copper alloys - Wrought and unwrought forging stock EN 12420:1999, Copper and copper alloys - Forgings EN 13906-1:2013, Cylindrical helical springs made from round

43、wire and bar - Calculation and design - Part 1 : Compression springs EN 14071:2004, Pressure relief valves for LPG tanks - Ancillary equipment ISO 7-1:1994, Pipe threads where pressure-tight joints are made on the threads Part 1: Dimensions, tolerances and designation ISO 6957:1988, Copper alloys Am

44、monia test for stress corrosion resistance ANSI/ASME B1.20.11983, Pipe Threads, General Purpose (Inch) 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 liquefied petroleum gas LPG low pressure liquefied gas composed of one or more light hydroc

45、arbons which are assigned to UN 1011, UN 1075, UN 1965, UN 1969 or UN 1978 only and which consists mainly of propane, propene, butane, butane isomers, butene with traces of other hydrocarbon gases 3.2 pressure vessel assembly of the pressure-retaining envelope (including the openings and their closu

46、res) and non-pressure-retaining parts attached directly to it 3.3 pressure relief valve self-closing valve which automatically, without the assistance of any energy other than that of the vapour concerned, discharges vapour at a predetermined pressure, and operates with a pop action 3.4 thermal expa

47、nsion valve self-closing valve which automatically, without the assistance of any energy other than that of the fluid concerned, discharges fluid at a predetermined pressure DIN EN 14129:2014-05 EN 14129:2014 (E) 8 3.5 spring loaded pressure relief valve valve in which the loading due to the vapour

48、pressure underneath the sealing element is opposed only by the force of a spring 3.6 external pressure relief valve pressure relief valve which when fitted to the LPG pressure vessel has the spring external to the pressure envelope Note 1 to entry: See Figure 1. 3.7 pilot operated pressure relief va

49、lve external pressure relief valve where the pressure setting is separate from the discharge function Note 1 to entry: See Figure 2. 3.8 internal pressure relief valve pressure relief valve which when fitted to the LPG pressure vessel has the spring internal to the pressure envelope 3.9 semi-Internal pressure relief valve pressure relief valve which when fitted has the spring inside the pressure envelope and which has some of the working parts and the wrenching section outside the pressure envelope Note 1 to entry: See