Welded steel tanks for liquefied petroleum gas (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 tanks 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 standard does not cover tanks for ISO type containers.

Geschweißte Druckbehälter aus Stahl für Flüssiggas (LPG) - Straßentankfahrzeuge - Konstruktion und Herstellung

Anwendungsbereich
Die vorliegende Europäische Norm legt Mindestanforderungen für Werkstoffe, Konstruktion, Ausführung und
Herstellungsverfahren sowie Prüfungen für geschweißte Druckbehälter für Flüssiggas für Straßentankfahrzeuge
und deren angeschweißte Zusatzeinrichtungen fest, die aus Kohlenstoffstahl, Kohlenstoff-/Manganstahl und
mikrolegiertem Stahl hergestellt sind.
Es besteht keine obere Begrenzung für die Größe, da diese durch Begrenzung der Bruttomasse des
Fahrzeugs festgesetzt wird.
Diese Norm gilt nicht für Druckbehälter für ISO-Container.

Citernes en acier soudées pour gaz de pétrole liquéfiés (GPL) - Véhicules citernes routiers - Conception et construction

La présente Norme européenne spécifie les exigences minimales relatives aux matériaux, au calcul, a la construction, aux procédures d'exécution ainsi qu'aux essais en usine des réservoirs en acier soudés des véhicules citernes routiers utilisés pour le transport du gaz de pétrole liquéfié et de leurs accessoires soudés fabriqués en acier au carbone, en acier au carbone / manganese et en acier a grain fin.
La présente norme ne définit pas de taille limite supérieure au réservoir étant donné que celle-ci sera déterminée par la limite du poids total en charge du véhicule.
La présente norme ne couvre pas les réservoirs destinés a des conteneurs de type ISO.

Varjenje jeklenih rezervoarjev za utekočinjeni naftni plin (UNP) - Rezervoarji za cestni prevoz - Konstrukcija in izdelava

General Information

Status
Withdrawn
Publication Date
30-Apr-2002
Withdrawal Date
03-Apr-2008
Technical Committee
Current Stage
9900 - Withdrawal (Adopted Project)
Start Date
01-Apr-2008
Due Date
24-Apr-2008
Completion Date
04-Apr-2008

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2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Geschweißte Druckbehälter aus Stahl für Flüssiggas (LPG) - Straßentankfahrzeuge - Konstruktion und HerstellungCiternes en acier soudées pour gaz de pétrole liquéfiés (GPL) - Véhicules citernes routiers - Conception et constructionWelded steel tanks for liquefied petroleum gas (LPG) - Road tankers - Design and manufacture43.080.10Tovornjaki in priklopnikiTrucks and trailers23.020.20Posode in vsebniki, montirani na vozilaVessels and containers mounted on vehiclesICS:Ta slovenski standard je istoveten z:EN 12493:2001SIST EN 12493:2002en01-maj-2002SIST EN 12493:2002SLOVENSKI
STANDARD



SIST EN 12493:2002



EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 12493June 2001ICS 23.020.30English versionWelded steel tanks for liquefied petroleum gas (LPG) - Roadtankers - Design and manufactureCiternes en acier soudées pour gaz de pétrole liquéfiés(GPL) - Véhicules citernes routiers - Conception etconstructionGeschweißte Druckbehälter aus Stahl für Flüssiggas (LPG)- Straßentankfahrzeuge - Konstruktion und HerstellungThis European Standard was approved by CEN on 9 May 2001.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the 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 translationunder the responsibility of a CEN member into its own language and notified to the Management Centre has the same status as the officialversions.CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece,Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2001 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 12493:2001 ESIST EN 12493:2002



Page 2EN 12493:2001ContentsPageForeword.5Introduction.51Scope.52Normative references.63Terms and definitions.74Materials.84.1Suitability.84.2Pressure retaining parts.84.3Non-pressure retaining parts.84.4Welding consumables.84.5Non-metallic materials (gaskets).84.6Certification of materials.85Tank design.85.1Design conditions.85.2Surge plates.95.3Doubler plates.95.4Stresses due to motion.95.5Self-supporting tanks.95.6Vacuum conditions.95.7Tank mountings.105.8Internal pipework.106Openings.106.1General.106.2Reinforcement of openings.106.3Threaded connections.106.4Manhole.107Non-pressure retaining parts.117.1Attachment welds.117.2Position of attachment welds.118Workmanship and construction.118.1General.118.2Control of materials.118.3Acceptable weld details.128.4Heat treatment and forming.128.4.1Cold forming.128.4.2Hot forming.128.4.3Testing of formed parts.138.4.4Visual examination and control of dimensions.138.4.5Marking.138.5Welding.138.5.1General.138.5.2Longitudinal welds.138.5.3Welding procedure specification (WPS).148.5.4Qualification of WPS.148.5.5Qualification of welders and welding operators.148.5.6Preparation of edges.148.5.7Attachments and fastenings.148.5.8Preheat.148.6Post-weld heat treatment.148.7Manufacturing tolerances.15SIST EN 12493:2002



Page 3EN 12493:20018.8Repairs to pressure envelope and direct attachment welds.158.8.1General requirements.158.8.2Repair of surface imperfections in the parent metal.158.8.3Repair of weld imperfections.159Construction and workmanship of internal pipework.1510Inspection and testing.1610.1General.1610.2Mechanical testing.1610.2.1Production test plates.1610.2.2Longitudinal welds.1610.2.3Circumferential welds.1610.2.4Mechanical tests.1610.2.5Test requirements.1610.3Non-destructive testing.1710.3.1Internal imperfections.1710.3.2Surface imperfections.1710.4Non-destructive testing techniques for welds.1710.4.1Radiographic techniques.1710.4.2Marking and identification of radiographs.1810.4.3Ultrasonic techniques.1810.4.4Magnetic particle techniques.1810.4.5Penetrant techniques.1810.5Qualification of non-destructive testing personnel.1810.6Visual examination of welds.1810.7Acceptance test criteria.1910.8Pressure test.1910.9Capacity.1911External corrosion protection and finishing.1911.1External protection.1911.2Finishing operations.1912Marking.1913Records and documentation.1913.1Documentation obtained by the manufacturer.1913.2Records prepared by the manufacturer.1913.3Retention and supply of documents.20Annex A (normative)
Guidance on selection of material grades.21Annex B (normative)
Reference temperatures for design.22B.1Introduction.22B.2General.22B.3Developed pressure.22B.4Filling.22Annex C (informative)
Alternative reference temperatures for design.23C.1Introduction.23C.2General.23C.3Developed pressure.23C.4Filling.23Annex D (normative)
Design.24D.1Design stresses.24D.2Design Pressure.24D.2.1Rigid single tankers and semi-trailers.24D.2.2Tanker plus full trailer combinations.24D.3Design Formulae.24D.3.1Cylindrical shell calculation.24D.3.2Dished ends.25D.3.3Conical shell calculations.28D.4Nozzle reinforcement.32D.5Nozzle reinforcement by pads or flanges.34D.6Nozzle reinforcement by branches.34Annex E (informative)
Example of joints.39SIST EN 12493:2002



Page 4EN 12493:2001Annex F (normative)
Allowable tolerances.43F.1Tanks.43F.1.1External diameter.43F.1.2Out of roundness.43F.1.3Deviation of straightness.43F.1.4Irregularities in profile.43F.2Dished end tolerance.44F.2.1Thickness of material.44F.2.2Profile.44F.3Assembly tolerances.45F.3.1Middle line alignment.45F.3.2Surface alignment.45F.4Attachments, nozzles and fittings.46F.5Overall length.46Annex G (normative)
Heat treatment.47G.1Method of post-weld heat treatment.47G.2Temperature control.47G.3Temperature limit.47G.4Temperature measurement.47Annex H (informative)
Typical method for measurement of shell peaking.48H.1Profile gauge.48H.2Peaking survey.48Annex I (normative)
Welding imperfections and test specimens.51I.1Imperfections.51I.2Test specimens.54Annex J (informative)
Choice of non-destructive test methods for welds.55J.1Internal imperfections.55J.2Surface imperfections.55Annex K (normative)
Hydraulic pressure test.56K.1Temporary fittings.56K.2Pressure gauges.56K.3Pressurising agent.56K.4Avoidance of shock.56K.5Applied pressure.56Annex L (normative)
Name plate.57Bibliography.59SIST EN 12493:2002



Page 5EN 12493:2001ForewordThis European Standard has been prepared by Technical Committee CEN/TC 286 "Liquefied petroleum gasequipment 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 orby endorsement, at the latest by December 2001, and conflicting national standards shall be withdrawn at the latestby December 2001.This European Standard has been prepared under a mandate given to CEN by the European Commission and theEuropean Free Trade Association and supports the framework Directives on the Transport of Dangerous Goods.This European Standard has been submitted for reference into the technical annexes of the European Agreementconcerning the international carriage of dangerous goods by road (ADR).The standards listed in the normative references and covering the basic requirements of the ADR not addressedwithin the present standard are normative only if the standards themselves are referred to in the technical annexesof ADR.The annexes A, B, D, F, G, I, K and L are normative.The annexes C, E, H and J are informative.According to the CEN/CENELEC Internal Regulations, the national standards organizations of the followingcountries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland,France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden,Switzerland and the United Kingdom.IntroductionThis European Standard calls for the use of substances and procedures that may be injurious to health if adequateprecautions are not taken. It refers only to technical suitability and does not absolve the user from legal obligationsrelating to health and safety at any stage.It has been assumed in the drafting of this European Standard that execution of its provisions is entrusted toappropriately qualified and experienced people.1 ScopeThis European Standard specifies minimum requirements for materials, design, construction and workmanshipprocedures, and tests for welded LPG road tanker tanks 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 standard does not cover tanks for ISO type containers.SIST EN 12493:2002



Page 6EN 12493:20012 Normative referencesThis European Standard incorporates by dated or undated reference, provisions from other publications. Thesenormative references are cited at the appropriate places in the text and the publications are listed hereafter. Fordated references, subsequent amendments to or revisions of any of these publications apply to this EuropeanStandard only when incorporated in it by amendment or revision. For undated references the latest edition of thepublication referred to applies (including amendments).EN 287-1, Approval and testing of welders — Fusion welding — Part 1: Steels.EN 288-2, Specification and approval of welding procedures for metallic materials — Part 2: Welding procedurespecification for arc welding.EN 288-3, Specification and approval of welding procedures for metallic materials — Part 3: Welding proceduretests for the arc welding of steels.EN 444, Non-destructive testing — General principles for radiographic examination of metallic materials by X- andgamma 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/holetype) — Determination of image quality value.EN 473, Qualification and certification of NDT personnel — General principles.EN 571-1, Non-destructive testing — Penetrant testing — Part 1: General principles.EN 729-2, Quality requirements for welding — Fusion welding of metallic materials — Part 2: Comprehensivequality requirements.EN 837-2, Pressure gauges — Part 2: Selection and installation recommendations for pressure gauges.EN 875, Destructive tests on welds in metallic materials — Impact tests — Test specimen location notch orientationand examination.EN 876, Destructive tests on welds in metallic materials — Longitudinal tensile test on weld metal in fusion weldedjoints.EN 895, Destructive tests on welds in metallic materials — Transverse tensile test.EN 910, Destructive tests on welds in metallic materials — Bend tests.EN 970, Non-destructive examination of fusion welds — Visual examination.EN 1290, Non-destructive examination of welds — Magnetic particle examination of welds.EN 1321, Destructive tests on welds in metallic materials — Macroscopic and microscopic examination of welds.EN 1418, Welding personnel — Approval testing of operators for fusion welding and resistance weld setters for fullymechanized and automatic welding of metallic materials.E
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