EN 12493:2008+A1:2012

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Flüssiggas­Geräte und Ausrüstungsteile - Geschweißte Druckbehälter aus Stahl für Flüssiggas (LPG) - Konstruktion und Herstellung von StraßentankfahrzeugenÉquipements pour GPL et leurs accessoires - Réservoirs en acier soudés pour gaz de pétrole liquéfié (GPL) - Conception et construction des camions-citernesLPG equipment and accessories - Welded 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 12493:2008+A1:2012SIST EN 12493:2008+A1:2012en,fr,de01-maj-2012SIST EN 12493:2008+A1:2012SLOVENSKI
STANDARDSIST EN 12493:20081DGRPHãþD

EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 12493:2008+A1
March 2012 ICS 23.020.30 Supersedes EN 12493:2008English Version
LPG equipment and accessories - Welded steel tanks for liquefied petroleum gas (LPG) - Road tankers design and manufacture
Équipements pour GPL et leurs accessoires - Réservoirs en acier soudés pour gaz de pétrole liquéfié (GPL) - Conception et construction des camions-citernes
Flüssiggas-Geräte und Ausrüstungsteile - Geschweißte Druckbehälter aus Stahl für Flüssiggas (LPG) - Konstruktion und Herstellung von StraßentankfahrzeugenThis European Standard was approved by CEN on 11 February 2008 and includes Amendment 1 approved by CEN on 30 January 2012.
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, 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
Management Centre:
Avenue Marnix 17,
B-1000 Brussels © 2012 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 12493:2008+A1:2012: ESIST EN 12493:2008+A1:2012

Guidance on selection of material grades . 24Annex B (normative)
Reference temperatures for design . 25B.1Introduction . 25B.2General . 25B.3Developed pressure . 25B.4Filling . 25Annex C (informative)
Alternative reference temperatures for design . 26C.1Introduction . 26C.2General . 26C.3Developed pressure . 26C.4Filling . 26Annex D (normative)
Design . 27D.1Design stresses . 27D.2Design pressure . 27SIST EN 12493:2008+A1:2012

Example of joints. 42Annex F (normative)
Allowable tolerances . 46F.1Tanks . 46F.1.1External diameter . 46F.1.2Out of roundness . 46F.1.3Deviation of straightness . 46F.1.4Irregularities in profile . 46F.2Dished end tolerance . 47F.2.1Thickness of material . 47F.2.2Profile . 47F.3Assembly tolerances . 48F.3.1Middle line alignment . 48F.3.2Surface alignment . 48F.4Attachments, nozzles and fittings . 49F.5Overall length . 49Annex G (normative)
Heat treatment . 50G.1Method of post-weld heat treatment . 50G.2Temperature control . 50G.3Temperature limit . 50G.4Temperature measurement . 50Annex H (informative)
Typical method for measurement of shell peaking . 51H.1Profile gauge . 51H.2Peaking survey . 51Annex I (normative)
Welding imperfections and test specimens . 54I.1Imperfections . 54I.2Test specimens . 57Annex J (informative)
Choice of non-destructive test methods for welds . 58J.1Internal imperfections . 58J.2Surface imperfections . 58Annex K (normative)
Hydraulic pressure test . 59K.1Temporary fittings . 59K.2Pressure gauges . 59K.3Pressurising agent. 59K.4Avoidance of shock . 59K.5Applied pressure. 59Annex L (normative)
Name plate . 60Annex M (informative)
!!!!Environmental checklist"""" . 62Bibliography . 63 SIST EN 12493:2008+A1:2012

September 2012. 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 includes Amendment 1, approved by CEN on 2012-01-30. This document supersedes !EN 12493:2008". The start and finish of text introduced or altered by amendment is indicated in the text by tags ! ". This European Standard has been submitted for reference into the technical annexes of the European Agreement concerning 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 addressed within the present standard are normative only if the standards themselves are referred to in the technical annexes of ADR. Main changes from 2001 version:  update of reference standards, particularly relating to qualification of welding, in text and Clause 2;  restriction to maximum UTS added to !4.3" and Annex A to align with ADR restrictions;  revision of symbols and presentation of D.3.2.5 to align with EN 13445 (source standard). No technical changes to end design result;  editorial changes. 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, 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 12493:2008+A1:2012

2 Normative references The following referenced documents are indispensable for the application of this document. 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 SIST EN 12493:2008+A1:2012

(ISO 148-1)" EN ISO 3834-2, Quality requirements for fusion welding of metallic materials — Part 2: Comprehensive quality requirements (ISO 3834-2:2005) !EN ISO 4136, Destructive tests on welds in metallic materials — Transverse tensile test (ISO 4136) EN ISO 5173, Destructive tests on welds in metallic materials — Bend tests (ISO 5173) EN ISO 5178, Destructive tests on welds in metallic materials — Longitudinal tensile test on weld metal in fusion welded joints (ISO 5178)" EN ISO 5817:2007, Welding — Fusion-welded joints in steel, nickel, titanium and their alloys (beam welding excluded) — Quality levels for imperfections (ISO 5817:2007) EN ISO 6520-1:2007, Welding and allied processes — Classification of geometric imperfections in metallic materials — Part 1: Fusion welding (ISO 6520-1:2007) EN ISO 6520-2:2001, Welding and allied processes — Classification of geometric imperfections in metallic materials — Part 2: Welding with pressure (ISO 6520-2:2001) SIST EN 12493:2008+A1:2012

(ISO 6892-1)" !EN ISO 9016, Destructive tests on welds in metallic materials — Impact tests — Test specimen location, notch orientation and examination (ISO 9016)" EN ISO 15609-1, Specification and qualification of welding procedures for metallic materials — Welding procedure specification — Part 1: Arc welding (ISO 15609-1:2004)
EN ISO 15614-1, Specification and qualification of welding procedures for metallic materials — Welding procedure test — Part 1: Arc and gas welding of steels and arc welding of nickel and nickel alloys (ISO 15614-1:2004) !EN ISO 17637, Non-destructive testing of welds — Visual testing of fusion-welded joints (ISO 17637)" !EN ISO 17638, Non-destructive testing of welds — Magnetic particle testing (ISO 17638)" !EN ISO 17640, Non-destructive testing of welds — Ultrasonic testing — Techniques, testing levels, and assessment (ISO 17640)" 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 yield strength upper yield strength ReH or, for steels that do not exhibit a definite yield (non-proportional elongation), the 0,2 % proof strength 3.2 cold forming forming at temperatures not less than 25 °C below the maximum permissible temperature for stress relieving, in accordance with the applicable material specifications 3.3 hot forming forming at temperatures above the temperature for stress relieving as stated in the material specifications 3.4 sun shield shield covering not less than the upper third but not more than the upper half of the shell surface, separated from the shell by an air gap of at least 40 mm 3.5 tank assembly of the shell (the pressure-retaining enclosure including the openings and their closures) and non pressure-retaining parts welded directly to the shell !NOTE Also referred to as a 'fixed tank’ or ‘demountable tank’ in the ADR." 3.6 competent authority authority designated as such in each country !in accordance with national regulation" 3.7 notified/designated body testing and certifying body approved by a competent authority SIST EN 12493:2008+A1:2012

The materials of construction shall be suitable for operating within the envisaged temperature range. If the tank could be subjected to more severe ambient or product temperatures, the design temperature range shall be - 40 °C to + 50 °C. Guidance on selection of material grades is given in Annex A. If additional impact testing is required, it shall be carried out in accordance with !EN ISO 148-1" to achieve the impact values specified in 10.2.5.4. 4.3 Pressure retaining parts Pressure-retaining materials shall be of appropriate steels conforming to EN 10028-2 or EN 10028-3 or shall conform to specifications agreed with the competent authority.
All materials shall conform to 10.2.4 and the ratio of the specified yield strength (ReH) to minimum tensile strength (Rm) shall not exceed 0,85 (i.e. ReH/Rm < 0,85). The percentage elongation at fracture shall be not less than 10 000 divided by the actual tensile strength in N/mm2, and in any case shall be not less than 16 % for fine grained steels and not less than 20 % for other steels.
Where fine grain steels are used, the guaranteed yield strength, ReH shall not exceed 460 N/mm2 and the upper tensile strength, Rm, shall not exceed 725 N/mm2. 4.4 Non-pressure retaining parts Non-pressure retaining parts that are directly welded to pressure retaining parts shall be of suitable materials conforming to EN 10025-2:2004 or materials with characteristics approved by a competent authority. All materials used for non-pressure retaining parts shall be compatible with the material of pressure retaining parts, and shall conform to the impact requirements of 10.2.5.4, tested in accordance with the method specified in !EN ISO 148-1". 4.5 Welding consumables Welding consumables shall be able to provide consistent welds with properties at least equal to those specified for the parent materials in the finished tank. SIST EN 12493:2008+A1:2012

 Minimising the environmental impact of in service maintenance and end of life disposal; and  The design requirements of the TPED, Directive 2010/35/EU." 5.2 Surge plates !deleted text" To reduce the dynamic loadings of the liquid content due to accelerations of the vehicle, tanks longer than 4 m shall be fitted with transverse surge plates at a maximum spacing of 4 m, and shall be designed to permit full internal inspection of the tank. The area of each plate shall be at least 70 % of the cross-sectional area of the tank in which the plates are fitted. !Where the road tanker is to be operated with the tank at more at than 20 % or less than 80 % full, the maximum volume of each section of the tank shell, divided by the surge plates shall not exceed 7 500 l." Surge plates shall be able to withstand the load imposed by a full capacity liquid content of the section between the plates in either direction. Surge plates shall be at least 2 mm thick. Provision shall be made for communication and drainage between sections. For tanks over 1,8 m diameter, having a wall thickness less than 6 mm and for tanks up to 1,8 m diameter, having a wall thickness less than 5 mm, the surge plates shall have the same thickness as the shell and the volume between any two plates shall not exceed 7 500 litres. 5.3 Doubler plates To reduce stress concentration on the tank, load-carrying attachments shall incorporate a doubler plate between the attachment and the tank. SIST EN 12493:2008+A1:2012

The designer shall assess the effect of the tank and its mountings, including the additional loadings given in 5.4. NOTE The chassis manufacturer should be notified at the tank design stage that the tank, while on the chassis, could be subjected to a hydraulic test, during which the tank can contain twice the normal weight of carrying capacity. SIST EN 12493:2008+A1:2012

Stitch welding shall not be used. 5.8 Internal pipework The mechanical strength of internal pipework and supports shall be sufficient to withstand the service conditions, including dynamic load. NOTE Internal pipework may be attached directly to a tank boss. Pipework shall be located so as to avoid inadvertent entry of liquid LPG from the liquid inlet line into other pipework terminating in the vapour space. 6 Openings 6.1 General For the equipping of LPG road tankers, see EN 12252. Valves and other accessories shall be protected against damage by external impact either by their positioning on the tank, when mounted on the vehicle, or by specific tank design. Provision in tank design shall be either by mounting and fitting valves and other accessories in a recess within the contour of the tank shell or end, or by use of a guard able to withstand a collision with another vehicle and the forces experienced in a tank roll-over. 6.2 Reinforcement of openings Openings shall be reinforced and designed in accordance with D.4. 6.3 Threaded connections The maximum nominal diameter of threaded connections shall be 80 mm. 6.4 Manhole !Tanks with a volume over 3 000 litres" shall be fitted with a manhole either:  at least 500 mm in diameter; or  at least 420 !mm, where reducing the diameter is" acceptable to the competent authority. !NOTE Tanks of a volume not exceeding 3 000l may be fitted with inspection openings instead of a manhole, with dimensions conforming to EN 286-1." Manholes shall be of forged construction, machined from plate, or fabricated from pipe and standard flanges of the appropriate temperature and pressure rating. If plate is used for pad type manholes, it shall be ultrasonically tested for lamellar defects. The manhole shall be positioned for ease of access. SIST EN 12493:2008+A1:2012
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