DIN EN 13953-2015 LPG equipment and accessories - Pressure relief valves for transportable refillable cylinders for Liquefied Petroleum Gas (LPG) German version EN 13953 2015《液化石油气.pdf

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1、May 2015 Translation by DIN-Sprachendienst.English price group 12No 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!%BZx“2315585www.din.deDDIN EN 13953LPG equipment and accessories Pressure relief valves for transportable refillable cylinders for LiquefiedPetroleum Gas (LPG);English version EN 13953:2015,English translation of DIN EN 13953:2015-05Flssiggas-Gerte und Ausrstungsteile Sicherheitsventile fr o

3、rtsbewegliche, wiederbefllbare Flaschen fr Flssiggas (LPG);Englische Fassung EN 13953:2015,Englische bersetzung von DIN EN 13953:2015-05quipements et accessoires GPL Soupapes de scurit des bouteilles transportables et rechargeables pour gaz de ptroleliqufis (GPL);Version anglaise EN 13953:2015,Tradu

4、ction anglaise de DIN EN 13953:2015-05SupersedesDIN EN 13953:2007-06www.beuth.deDocument comprises 21 pagesIn case of doubt, the German-language original shall be considered authoritative.04.15 DIN EN 13953:2015-05 2 A comma is used as the decimal marker. National foreword This document (EN 13953:20

5、15) has been prepared by Technical Committee CEN/TC 286 “Liquefied Petroleum Gas equipment and accessories” (Secretariat: NSAI, Ireland). The responsible German body involved in its preparation was the DIN-Normenausschuss Druckgasanlagen (DIN Standards Committee Pressurized Gas Installations), Worki

6、ng Committee NA 016-00-06 AA Flssiggas-Gerte und Ausrstung; Spiegelausschuss zu CEN/TC 286. The DIN Standards corresponding to the International Standards referred to in this document are as follows: ISO 2859-1 DIN ISO 2859-1 Amendments This standard differs from DIN EN 13953:2007-06 as follows: a)

7、the nominal set pressure has been modified; b) Clause 7 “Testing and inspection of the design” has been restructured; c) an endurance test has been introduced. Previous editions DIN EN 13953: 2003-09, 2007-06 National Annex NA (informative) Bibliography DIN ISO 2859-1, Sampling procedures for inspec

8、tion by attributes Part 1: Sampling schemes indexed by acceptance quality limit (AQL) for lot-by-lot inspection EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 13953 March 2015 ICS 23.060.40 Supersedes EN 13953:2003+A1:2007English Version LPG equipment and accessories - Pressure relief valves f

9、or transportable refillable cylinders for Liquefied Petroleum Gas (LPG) quipements et accessoires GPL - Soupapes de scurit des bouteilles transportables et rechargeables pour gaz de ptrole liqufis (GPL) Flssiggas-Gerte und Ausrstungsteile - Sicherheitsventile fr ortsbewegliche, wiederbefllbare Flasc

10、hen fr Flssiggas (LPG) This European Standard was approved by CEN on 29 November 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

11、 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 made by translation under t

12、he 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, Estonia, Finland, Former Yugo

13、slav 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 COMMITTEE FOR STANDARDIZATION COMIT EUROPEN

14、 DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2015 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 13953:2015 EEN 13953:2015 (E) 2 Contents Page Foreword 3 Introdu

15、ction .4 1 Scope 5 2 Normative references 5 3 Terms and definitions .5 4 Operating Conditions 7 5 Materials .7 5.1 General 7 5.2 Metallic materials .8 5.3 Non-metallic components .8 5.4 Lubricants, sealants and adhesives 8 6 Design .8 6.1 General 8 6.2 Threads .9 6.3 Springs 9 7 Type Testing and ins

16、pection of the design .9 7.1 General 9 7.2 Test requirements . 10 7.3 Dimensional checks . 11 7.4 Hydraulic pressure proof test 11 7.5 Leak tightness test before ageing . 12 7.6 Start to discharge pressure test 12 7.7 Discharge capacity test 12 7.8 Leak tightness tests . 13 7.9 Endurance test 13 7.1

17、0 Visual Inspection 13 8 Test records 13 9 Production testing 13 10 Marking 14 11 Documentation 14 Annex A (informative) Terms used with pressure relief valves . 15 Annex B (normative) Special low temperature requirements for valves 16 Annex C (normative) Sizing of PRVs for LPG cylinders . 17 Annex

18、D (informative) Production testing 18 D.1 General . 18 D.2 Setting and leak testing of PRVs . 18 D.3 Batch samples . 18 D.4 Rejection criteria . 18 D.5 Documentation 18 Bibliography . 19 DIN EN 13953:2015-05 EN 13953:2015 (E) 3 Foreword This document (EN 13953:2015) has been prepared by Technical Co

19、mmittee 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 September 2015, and conflicting na

20、tional standards shall be withdrawn at the latest by September 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 rights. This document sup

21、ersedes EN 13953:2003+A1:2007. This European Standard has been submitted for reference into the technical annexes of the ADR 1. NOTE These regulations take precedence over any clause of this European Standard. It is emphasized that ADR is regularly at intervals of two years which may lead to tempora

22、ry non-compliances with the clauses of this European Standard. The major changes to this revision include: change to the nominal set pressure; restructure of Clause 7, Testing and Inspection of the design; introduction of an endurance test. This document has been prepared under a mandate given to CE

23、N by the European Commission and the European Free Trade Association. 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

24、, 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. DIN EN 13953:2015

25、-05 EN 13953:2015 (E) 4 Introduction This European Standard 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

26、at any stage. Protection of the environment is a key political 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 environm

27、ent, including expenditure of energy, and during all phases of its existence, from mining of raw materials, to fabrication, packaging, distribution, use, scrapping, recycling of materials, etc. It is essential that provisions be restricted to a general guidance. Limit values are specified in nationa

28、l laws. It is recommended that manufacturers develop an environmental management policy. For guidance see the EN ISO 14000 series. It has been assumed in the drafting of this European Standard that the execution of its provisions is entrusted to appropriately qualified and experienced people. All pr

29、essures are gauge pressures unless otherwise stated. NOTE 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 leaf

30、let “measurement uncertainty leaflet” SP INFO 2000 27 2. DIN EN 13953:2015-05 EN 13953:2015 (E) 5 1 Scope This European Standard specifies the design, testing and marking requirements for spring loaded pressure relief valves (PRV), for use in liquefied petroleum gas (LPG) cylinders. These PRVs can b

31、e either an integral part of a cylinder valve (see EN ISO 14245 3 and EN ISO 15995 4) or a separate device. This European Standard does not exclude the use of other designs of pressure relief devices that provide a similar level of safety. 2 Normative references The following documents, in whole or

32、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 (including any amendments) applies. EN 549, Rubber materials for seals and diaph

33、ragms 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 EN 751-2, Sealing materials for metallic threaded joints in contact with 1st, 2nd and 3rd family gases

34、and hot water Part 2: Non-hardening jointing compounds EN 7513 Sealing materials for metallic threaded joints in contact with 1st, 2nd and 3rd family gases and hot water Part 3: Unsintered PTFE tapes EN 837-1:1996, Pressure gauges Part 1: Bourdon tube pressure gauges Dimensions, metrology, requireme

35、nts and testing EN 10270-3, Steel wire for mechanical springs Part 3: Stainless spring steel wire EN 12164, Copper and copper alloys Rod for free machining purposes EN 12420, Copper and copper alloys Forgings EN 13906-1, Cylindrical helical springs made from round wire and bar Calculation and design

36、 Part 1: Compression springs EN ISO 11114-1, Gas cylinders Compatibility of cylinder and valve materials with gas contents Part 1: Metallic materials (ISO 11114-1) EN ISO 11114-2, Gas cylinders Compatibility of cylinder and valve materials with gas contents Part 2: Non-metallic materials (ISO 11114-

37、2) 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 hydrocarbons which are assigned to UN 1011, UN 1075, UN 1965, UN 1969 or UN 1978 only and which consists m

38、ainly of propane, propene, butane, butane isomers, butene with traces of other hydrocarbon gases DIN EN 13953:2015-05 EN 13953:2015 (E) 6 3.2 pressure relief valve PRV self-closing valve which automatically, without the assistance of any energy other than that of the vapour concerned, discharges vap

39、our at a predetermined pressure, and operates with a pop action Note 1 to entry: This is known as a “safety valve” in ADR. 3.3 nominal set pressure predetermined pressure of the pressure relief valve at which the valve is set to start to discharge 3.4 start to discharge pressure inlet pressure at wh

40、ich the first of a stream of bubbles appears at the outlet of a pressure relief valve through a water seal of not more than 50 mm water column, or other equivalent method 3.5 pop action rapid opening of the pressure relief valve sealing element so that the pressure relief valve is fully open, result

41、ing from an increase of inlet pressure creating a sudden increase in force and compression of the spring 3.6 overpressure pressure increase between the nominal set pressure and the flow rating pressure Note 1 to entry: Usually expressed as a percentage of nominal set pressure. 3.7 reseat pressure in

42、let pressure at which the sealing element effects a seal with the valve seat after the valve has been subjected to pop action 3.8 flow rating pressure inlet pressure at which the discharge capacity is measured 3.9 discharge capacity capacity at the flow rating pressure of a pressure relief valve exp

43、ressed in cubic metres per minute of free air at STP 3.10 nominal discharge capacity minimum discharge capacity at the flow rating pressure expressed in cubic metres per minute (m3/min) of free air at STP rounded down to one decimal place 3.11 sealing element non-metallic resilient component which a

44、ffects a seal by contact with the valve seat DIN EN 13953:2015-05 EN 13953:2015 (E) 7 3.12 valve seat normally raised area of the valve body on to which the sealing element effects a seal 3.13 cylinder valve primary shutoff device intended for liquid filling and liquid or vapour service fitted to LP

45、G cylinders Note 1 to entry: The valve can also include additional devices e.g. liquid level indicator, excess flow device, pressure relief valve, sediment tube, non-return valve and eduction tube. 3.14 leak tightness resistance to leakage to atmosphere across the valve seat or any other pressure co

46、ntaining component when the valve is closed 3.15 Standard Temperature and Pressure STP 15,6 C (288,7 K), 1,013 bar absolute (0,1013 MPa absolute) 4 Operating Conditions 4.1 Terms used with PRVs are described graphically in Annex A. 4.2 Valves designed in accordance with this European Standard shall

47、be suitable for: a minimum operating temperature of 20 C. Temperatures below this are acceptable for short periods for example, when discharging; a minimum operating temperature of 40 C for those parts of Europe where valves are subject to more severe temperature conditions. The material and design

48、shall be shown to be satisfactory for operations under these conditions and shall meet the requirements of Annex B. Where the PRV is integral with a cylinder valve suitable for temperature of 40 C, the PRV shall also be designed and tested for a temperature of 40 C; and a maximum operating temperature of 65 C. 5 Materials 5.1 General 5.1.1 Materials in contact with LPG shall be physically and chemically compatible with LPG under all normal operating conditions for wh