SIST EN 12493:2013
(Main)LPG equipment and accessories - Welded steel pressure vessels for LPG road tankers - Design and manufacture
LPG equipment and accessories - Welded steel pressure vessels for LPG road tankers - Design and manufacture
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. 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.
Flüssiggas-Geräte und Ausrüstungsteile - Geschweißte Druckbehälter aus Stahl für Straßentankfahrzeuge für Flüssiggas (LPG) - Auslegung und Herstellung
Diese Europäische Norm legt Mindestanforderungen an Werkstoffe, Auslegung, Bau und Ausführungsverfahren sowie Prüfungen für geschweißte Druckbehälter für Straßentankfahrzeuge für Flüssiggas (LPG, en: Liquefied Petroleum Gas) und deren angeschweißtes Zubehör fest, die aus Kohlenstoffstahl, Kohlenstoff Manganstahl und mikro¬legiertem Stahl hergestellt werden.
Es besteht keine Obergrenze für die Größe, da diese durch die Begrenzung der Bruttomasse des Fahrzeuges festgelegt wird.
Diese Europäische Norm gilt nicht für Druckbehälter für Tankcontainer.
ANMERKUNG 1 Im Sinne dieser Norm ist der Begriff „Straßentankfahrzeuge“ entsprechend der Definition im ADR als „fest verbundene Tanks“ und „Aufsetztanks“ zu verstehen.
ANMERKUNG 2 Die Ausrüstung der Druckbehälter sowie die Inspektion und Prüfung nach dem Zusammenbau ist durch EN 12252 bzw. EN 14334 abgedeckt.
ANMERKUNG 3 Das Baumuster des Straßentankfahrzeuges unterliegt entsprechend der Anforderung des ADR einer Zulassung durch die zuständige Behörde.
Équipements pour GPL et leurs accessoires - Réservoirs sous pression en acier soudés des camions-citernes pour GPL - Conception et construction
La présente Norme européenne spécifie les exigences minimales relatives aux matériaux, à la conception, à la construction et à la qualité d’exécution, ainsi que les essais des réservoirs sous pression soudés de camions-citernes utilisés pour le transport du GPL et de leurs accessoires soudés fabriqués en acier au carbone, en acier au carbone/manganèse et en acier micro-allié.
La présente norme ne définit pas de taille limite supérieure pour le réservoir étant donné que celle-ci sera déterminée par la limite du poids total en charge du véhicule.
La présente Norme européenne ne couvre pas les réservoirs sous pression destinés à des conteneurs-citernes.
NOTE 1 Dans le cadre de la présente norme, le terme « camion-citerne » signifie « réservoirs fixes » et « réservoirs démontables » comme définis dans l'ADR.
NOTE 2 L'équipement des camions-citernes et leurs contrôles et essais après construction sont couverts respectivement par les normes EN 12252 et EN 14334.
NOTE 3 Le mode de conception du camion-citerne est sujet à l'approbation de l'autorité compétente comme prévu dans l'ADR.
Oprema in pribor za utekočinjeni naftni plin (UNP) - Varjene jeklene tlačne posode cestnih cistern za utekočinjeni naftni plin (UNP) - Konstruiranje in izdelava
Ta evropski standard določa minimalne zahteve za materiale, načrtovanje, konstrukcijo in postopke izvedbe ter preskuse za varjene tlačne posode za utekočinjen naftni plin (LPG) za cestne cisterne in njihove varjene priključke, izdelane iz ogljikovega, ogljikovega/manganovega in mikro legiranega jekla. Zgornje omejitve velikosti ni, ker je ta določena z omejitvijo bruto teže vozila. Ta evropski standard se ne uporablja za tlačne posode za zabojnike s tlačno posodo.
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Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Flüssiggas-Geräte und Ausrüstungsteile - Geschweißte Druckbehälter aus Stahl für Straßentankfahrzeuge für Flüssiggas (LPG) - Auslegung und HerstellungÉquipements pour GPL et leurs accessoires - Réservoirs sous pression en acier soudés des camions-citernes pour GPL - Conception et constructionLPG equipment and accessories - Welded steel pressure vessels for LPG road tankers - Design and manufacture43.080.10Tovornjaki in priklopnikiTrucks and trailers23.020.30MHNOHQNHPressure vessels, gas cylindersICS:Ta slovenski standard je istoveten z:EN 12493:2013SIST EN 12493:2013en,fr,de01-december-2013SIST EN 12493:2013SLOVENSKI
STANDARDSIST EN 12493:2008+A1:20121DGRPHãþD
SIST EN 12493:2013
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 12493
November 2013 ICS 23.020.30 Supersedes EN 12493:2008+A1:2012English Version
LPG equipment and accessories - Welded steel pressure vessels for LPG road tankers - Design and manufacture
Équipements pour GPL et leurs accessoires - Réservoirs sous pression en acier soudés des camions-citernes pour GPL - Conception et construction
Flüssiggas-Geräte und Ausrüstungsteile - Geschweißte Druckbehälter aus Stahl für Straßentankfahrzeuge für Flüssiggas (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 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 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 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, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR 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 worldwide for CEN national Members. Ref. No. EN 12493:2013: ESIST EN 12493:2013
EN 12493:2013 (E) 2 Contents Page Foreword .5 Introduction .6 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 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 6.1 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 Acceptable 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 specification (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 SIST EN 12493:2013
EN 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 the 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 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 radiographs . 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 test . 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 documents . 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 . 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 SIST EN 12493:2013
EN 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 (informative)
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 Profile . 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.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-destructive 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)
Environmental checklist . 61 Bibliography . 62
SIST EN 12493:2013
EN 12493:2013 (E) 5 Foreword This document (EN 12493:2013) has been 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 May 2014, and conflicting 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 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 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 12493:2008+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 minimum 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: 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, Spain, Sweden, Switzerland, Turkey and the United Kingdom.
SIST EN 12493:2013
EN 12493:2013 (E) 6 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 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 environment, 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. Annex L comprises an environmental checklist which highlights the clauses of this European Standard that address environmental aspects. It is recommended that manufacturers develop 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 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 measuring equipment, etc. It might be beneficial to refer to the leaflet “measurement uncertainty leaflet" SP INFO 2000 27 [13].
SIST EN 12493:2013
EN 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. 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” 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 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) a
...
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Flüssiggas-Geräte und Ausrüstungsteile - Geschweißte Druckbehälter aus Stahl für Straßentankfahrzeuge für Flüssiggas (LPG) - Auslegung und HerstellungÉquipements pour GPL et leurs accessoires - Réservoirs sous pression en acier soudés des camions-citernes pour GPL - Conception et constructionLPG equipment and accessories - Welded steel pressure vessels for LPG road tankers - Design and manufacture23.020.30MHNOHQNHPressure vessels, gas cylindersICS:Ta slovenski standard je istoveten z:FprEN 12493kSIST FprEN 12493:2013en,fr,de01-julij-2013kSIST FprEN 12493:2013SLOVENSKI
STANDARD
kSIST FprEN 12493:2013
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
FINAL DRAFT
FprEN 12493
February 2013 ICS 23.020.30 Will supersede EN 12493:2008+A1:2012English Version
LPG equipment and accessories - Welded steel pressure vessels for LPG road tankers - Design and manufacture
Équipements pour GPL et leurs accessoires - Réservoirs sous pression en acier soudés des camions-citernes pour GPL - Conception et construction
Flüssiggas-Geräte und Ausrüstungsteile - Geschweißte Druckbehälter aus Stahl für Straßentankfahrzeuge für Flüssiggas (LPG) - Auslegung und Herstellung This draft European Standard is submitted to CEN members for unique acceptance procedure. It has been drawn up by the Technical Committee CEN/TC 286.
If this draft becomes a European Standard, 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.
This draft European Standard was established by CEN 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 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 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.
Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are aware and to provide supporting documentation.
Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without notice and shall not be referred to as a European Standard.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre:
Avenue Marnix 17,
B-1000 Brussels © 2013 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. FprEN 12493:2013: EkSIST FprEN 12493:2013
FprEN 12493:2013 (E) 2 Contents Page Foreword .5 Introduction .6 1 Scope .7 2 Normative references .7 3 Terms and definitions .8 4 Materials .9 4.1 Environmental .9 4.2 Suitability .9 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 Pressure vessel design . 10 5.1 Design conditions . 10 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 6.1 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 Acceptable 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 specification (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 kSIST FprEN 12493:2013
FprEN 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 the 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 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 radiographs . 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 test . 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 documents . 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 . 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 kSIST FprEN 12493:2013
FprEN 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 (informative)
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 Profile . 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.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-destructive 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 Pressurising agent. 60 K.4 Avoidance of shock . 60 K.5 Applied pressure. 60 Annex L (informative)
Environmental checklist . 62 Bibliography . 63
kSIST FprEN 12493:2013
FprEN 12493:2013 (E) 5 Foreword This document (FprEN 12493:2013) has been prepared by Technical Committee CEN/TC 286 “Liquefied petroleum gas equipment and accessories”, the secretariat of which is held by NSAI. This document is currently submitted to the Unique Acceptance Procedure. This document will supersede EN 12493:2008+A1:2012. This European Standard has been submitted for reference into 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 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 12493:2008+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 minimum thickness calculations; clarification of the surge plate requirements; references to Annex C (normative) changed to informative.
kSIST FprEN 12493:2013
FprEN 12493:2013 (E) 6 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 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 environment, 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. Annex L comprises an environmental checklist which highlights the clauses of this European Standard that address environmental aspects. It is recommended that manufacturers develop 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 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 measuring equipment etc. It might be beneficial to refer to the leaflet “measurement uncertainty leaflet" SP INFO 2000 27 [13].
kSIST FprEN 12493:2013
FprEN 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. 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” 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 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 287-1, 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 image quality value EN 462-2, Non-destructive testing — Image quality of radiographs — Part 2: Image quality indicators (step/hole type) — Determination of image quality value
EN 571-1, Non destructive testing — Penetrant testing — Part 1: General principles EN 837-2, Pressure gauges — Part 2: Selection and installation recommendations for pressure gauges EN 1321, Des
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