1、BSI Standards PublicationBS EN 12493:2013LPG equipment and accessories Welded steel pressurevessels for LPG road tankers Design and manufactureCopyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted without license
2、from IHS-,-,-BS EN 12493:2013 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN 12493:2013. Itsupersedes BS EN 12493:2008+A1:2012 which is withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee PVE/19, LPG containers and their associ
3、ated fittings.A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not purport to include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. The British Standards Institution 2013. Published b
4、y BSI StandardsLimited 2013ISBN 978 0 580 79621 0ICS 23.020.30Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 30 November 2013.Amendments issued since publicationD
5、ate Text affectedCopyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-BS EN 12493:2013EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 12493 November 2013 ICS 23.020.30 Supersedes
6、 EN 12493:2008+A1:2012English Version LPG equipment and accessories - Welded steel pressure vessels for LPG road tankers - Design and manufacture quipements pour GPL et leurs accessoires - Rservoirs sous pression en acier souds des camions-citernes pour GPL - Conception et construction Flssiggas-Ger
7、te und Ausrstungsteile - Geschweite Druckbehlter aus Stahl fr Straentankfahrzeuge fr Flssiggas (LPG) - Auslegung und Herstellung This European Standard was approved by CEN on 15 August 2013. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for
8、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 three
9、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 standards bodie
10、s 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, Slovenia, Spa
11、in, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2013 CEN All rights of exploitation in any form and by any means reserved worldwid
12、e for CEN national Members. Ref. No. EN 12493:2013: ECopyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-BS EN 12493:2013EN 12493:2013 (E) 2 Contents Page Foreword 5 Introduction .6
13、1 Scope 7 2 Normative references 7 3 Terms and definitions .9 4 Materials .9 4.1 Environmental 9 4.2 Suitability . 10 4.3 Pressure retaining parts 10 4.4 Non-pressure retaining parts 10 4.5 Welding consumables 10 4.6 Non-metallic materials (gaskets) . 10 4.7 Inspection documents for materials . 10 5
14、 Pressure vessel design 11 5.1 Design conditions . 11 5.2 Minimum thickness. 11 5.3 Surge plates 11 5.4 Doubler plates . 12 5.5 Stresses due to motion 12 5.6 Self-supporting pressure vessels . 12 5.7 Vacuum conditions . 12 5.8 Pressure vessel mountings . 13 5.9 Internal pipework 13 6 Openings . 13 6
15、.1 General . 13 6.2 Reinforcement of openings . 13 6.3 Threaded connections . 13 6.4 Manhole . 13 7 Non-pressure retaining parts 14 7.1 Attachment welds . 14 7.2 Position of attachment welds 14 8 Workmanship and construction 14 8.1 General . 14 8.2 Environment 14 8.3 Control of materials 14 8.4 Acce
16、ptable weld details . 15 8.5 Heat treatment and forming . 15 8.5.1 Cold forming 15 8.5.2 Hot forming 16 8.5.3 Testing of formed parts 16 8.5.4 Visual examination and control of dimensions . 16 8.5.5 Marking 17 8.6 Welding 17 8.6.1 General . 17 8.6.2 Longitudinal welds . 17 8.6.3 Welding procedure sp
17、ecification (WPS) 17 8.6.4 Qualification of WPS 17 8.6.5 Qualification of welders and welding operators 17 8.6.6 Preparation of edges 17 Copyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted without license from I
18、HS-,-,-BS EN 12493:2013EN 12493:2013 (E) 3 8.6.7 Attachments and fastenings 18 8.6.8 Preheat 18 8.7 Post-weld heat treatment 18 8.8 Manufacturing tolerances . 18 8.9 Repairs to pressure envelope and direct attachment welds 19 8.9.1 General requirements . 19 8.9.2 Repair of surface imperfections in t
19、he parent metal . 19 8.9.3 Repair of weld imperfections . 19 9 Construction and workmanship of internal pipework . 19 10 Manufacturing tests and examinations . 19 10.1 General . 19 10.2 Mechanical testing 20 10.2.1 Production test plates . 20 10.2.2 Longitudinal welds 20 10.2.3 Circumferential welds
20、 . 20 10.2.4 Mechanical tests 20 10.2.5 Test requirements . 20 10.3 Non-destructive testing 21 10.3.1 General . 21 10.3.2 Internal imperfections . 21 10.3.3 Surface imperfections . 21 10.4 Non-destructive testing for welds . 21 10.4.1 Radiographic testing . 21 10.4.2 Marking and identification of ra
21、diographs 22 10.4.3 Ultrasonic testing 22 10.4.4 Magnetic particle testing 22 10.4.5 Penetrant testing . 22 10.5 Qualification of non-destructive testing personnel . 22 10.6 Visual examination of welds. 22 10.7 Acceptance criteria . 23 10.8 Stress limitation and safety precautions at the hydraulic t
22、est . 23 11 External corrosion protection and finishing . 23 11.1 External protection 23 11.2 Finishing operations . 23 12 Marking . 23 13 Records and documentation 23 13.1 Documentation obtained by the manufacturer. 23 13.2 Records prepared by the manufacturer 24 13.3 Retention and supply of docume
23、nts . 24 Annex A (normative) Guidance on selection of material grades . 25 Annex B (normative) Reference temperatures for design 26 B.1 Introduction 26 B.2 General . 26 B.3 Developed pressure 26 B.4 Filling 26 Annex C (informative) Alternative reference temperatures for design . 27 C.1 Introduction
24、27 C.2 General . 27 C.3 Developed pressure 27 C.4 Filling 27 Annex D (normative) Design 28 D.1 Design stresses . 28 D.2 Design pressure 28 D.3 Design formulae 28 D.3.1 Cylindrical shell calculation . 28 Copyright European Committee for Standardization Provided by IHS under license with CENNot for Re
25、saleNo reproduction or networking permitted without license from IHS-,-,-BS EN 12493:2013EN 12493:2013 (E) 4 D.3.2 Dished ends . 29 D.3.3 Conical shell calculations 32 D.4 Nozzle reinforcement . 36 D.5 Nozzle reinforcement by pads or flanges 38 D.6 Nozzle reinforcement by branches . 38 Annex E (info
26、rmative) Example of joints 43 Annex F (normative) Allowable tolerances . 47 F.1 Pressure vessels. 47 F.1.1 External diameter 47 F.1.2 Out of roundness 47 F.1.3 Deviation of straightness . 47 F.1.4 Irregularities in profile 48 F.2 Dished end tolerance . 48 F.2.1 Thickness of material . 48 F.2.2 Profi
27、le . 48 F.3 Assembly tolerances 50 F.3.1 Middle line alignment . 50 F.3.2 Surface alignment . 50 F.4 Attachments, nozzles and fittings . 50 F.5 Overall length 50 Annex G (normative) Heat treatment 51 G.1 Method of post-weld heat treatment . 51 G.2 Temperature control . 51 G.3 Temperature limit 51 G.
28、4 Temperature measurement 51 Annex H (informative) Typical method for measurement of shell peaking 52 H.1 Profile gauge . 52 H.2 Peaking survey 52 Annex I (normative) Welding imperfections and test specimens . 55 I.1 Imperfections 55 I.2 Test specimens . 58 Annex J (informative) Choice of non-destru
29、ctive test methods for welds . 59 J.1 Internal imperfections 59 J.2 Surface imperfections 59 Annex K (normative) Hydraulic pressure test . 60 K.1 Temporary fittings 60 K.2 Pressure gauges . 60 K.3 Pressurizing agent 60 K.4 Avoidance of shock 60 K.5 Applied pressure. 60 Annex L (informative) Environm
30、ental checklist 61 Bibliography . 62 Copyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-BS EN 12493:2013EN 12493:2013 (E) 5 Foreword This document (EN 12493:2013) has been prepared
31、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 May 2014, and confl
32、icting national standards shall be withdrawn at the latest by May 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. This document
33、supersedes EN 12493:2008+A1:2012. 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 technical annexes of the ADR 10. NOTE These regulations take precedence
34、over any clause of this European 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 European Standard. The following main changes have been introduced during the revision of EN 12493:2
35、008+A1:2012: revision of the shell thickness calculations to avoid any confusion with ADR design pressures; revision of the hydraulic test pressure to avoid any confusion with ADR hydraulic test pressures and to reduce the maximum tensile stress (at the time of the hydraulic test); the addition of m
36、inimum thickness calculations; clarification of the surge plate requirements; references to Annex C (normative) changed to informative. According to the CEN-CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Au
37、stria, 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, Slovenia, Spain, Swe
38、den, Switzerland, Turkey and the United Kingdom. Copyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-BS EN 12493:2013EN 12493:2013 (E) 6 Introduction This European Standard calls for
39、 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 political issue
40、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 of its ex
41、istence, from mining of raw materials, to fabrication, packaging, distribution, use, scrapping, recycling of materials, etc. Annex L comprises an environmental checklist which highlights the clauses of this European Standard that address environmental aspects. It is recommended that manufacturers de
42、velop an environmental management policy. For guidance, see EN ISO 14000 series (see 6, 7 and 8). Provisions need to be restricted to a general guidance. Limit values are specified in national laws. It has been assumed in the drafting of this European Standard that the execution of its provisions is
43、 entrusted to appropriately qualified and experienced people. All pressures are gauged 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 measuri
44、ng equipment, etc. It might be beneficial to refer to the leaflet “measurement uncertainty leaflet“ SP INFO 2000 27 13. Copyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-BS EN 1249
45、3:2013EN 12493:2013 (E) 7 1 Scope This European Standard specifies minimum requirements for materials, design, construction and workmanship procedures, and tests for welded LPG road tanker pressure vessels and their welded attachments manufactured from carbon, carbon/manganese and micro alloy steels
46、. There is no upper size limit as this is determined by the gross vehicle weight limitation. This European Standard does not cover pressure vessels for pressure vessel containers. NOTE 1 In the context of this standard the term “road tanker“ is understood to mean “fixed tanks” and “demountable tanks
47、” as defined in ADR. NOTE 2 The equipment for the pressure vessels and the inspection and testing after assembly is covered by EN 12252 and EN 14334, respectively. NOTE 3 The design type of the road tanker is subject to approval by the competent authority, as required by ADR. 2 Normative references
48、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 (including any amendments) applies. EN 287-
49、1, Qualification test of welders Fusion welding Part 1: Steels EN 444, Non-destructive testing General principles for radiographic examination of metallic materials by X- and gamma-rays EN 462-1, Non-destructive testing Image quality of radiographs Part 1: Image quality indicators (wire type) Determination of
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