EN 12493:2013+A1:2014

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Flüssiggas-Geräte und Ausrüstungsteile - Geschweißte Druckbehälter aus Stahl für Straßentankwagen 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 12493:2013+A1:2014SIST EN 12493:2013+A1:2014en,fr,de01-oktober-2014SIST EN 12493:2013+A1:2014SLOVENSKI
STANDARD
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 12493:2013+A1
July 2014 ICS 23.020.30 Supersedes EN 12493:2013English 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 Straßentankwagen für Flüssiggas (LPG) - Auslegung und Herstellung This European Standard was approved by CEN on 15 August 2013 and includes Amendment 1 approved by CEN on 22 May 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 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 © 2014 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 12493:2013+A1:2014 ESIST EN 12493:2013+A1:2014

Guidance on selection of material grades . 26 Annex B (normative)
Reference temperatures for design . 27 B.1 Introduction . 27 B.2 General . 27 B.3 Developed pressure . 27 B.4 Filling . 27 Annex C (informative)
Alternative reference temperatures for design . 28 C.1 Introduction . 28 C.2 General . 28 SIST EN 12493:2013+A1:2014

Design . 29 D.1 Design stresses . 29 D.2 Design pressure . 29 D.3 Design formulae . 29 D.3.1 Cylindrical shell calculation . 29 D.3.2 Dished ends . 30 D.3.2.1 Minimum thickness. 30 D.3.2.2 Torispherical end calculation . 30 D.3.2.3 Ellipsoidal end calculation . 31 D.3.2.4 Hemispherical ends . 32 D.3.2.5 Formulae for calculating
................................................................................................................. 32 D.3.3 Conical shell calculations .................................................................................................................. 33 D.3.3.1 General requirements ......................................................................................................................... 33 D.3.3.2 Thickness of conical shell ................................................................................................................. 33 D.3.3.3 Junction between large end of a cone and a cylinder without a knuckle ..................................... 34 D.3.3.4 Junction between the small end of a cone and a cylinder ............................................................. 35 D.4 Nozzle reinforcement ......................................................................................................................... 37 D.5 Nozzle reinforcement by pads or flanges ........................................................................................ 39 D.6 Nozzle reinforcement by branches ................................................................................................... 39 Annex E (informative)
Example of joints. 44 Annex F (normative)
Allowable tolerances . 48 F.1 Pressure vessels. 48 F.1.1 External diameter . 48 F.1.2 Out of roundness . 48 F.1.3 Deviation of straightness . 48 F.1.4 Irregularities in profile . 49 F.2 Dished end tolerance . 49 F.2.1 Thickness of material . 49 F.2.2 Profile . 49 F.3 Assembly tolerances . 51 F.3.1 Middle line alignment . 51 F.3.2 Surface alignment . 51 F.4 Attachments, nozzles and fittings . 51 F.5 Overall length . 51 Annex G (normative)
Heat treatment . 52 G.1 Method of post-weld heat treatment . 52 SIST EN 12493:2013+A1:2014

Typical method for measurement of shell peaking . 53 H.1 Profile gauge . 53 H.2 Peaking survey . 53 Annex I (normative)
Welding imperfections and test specimens . 56 I.1 Imperfections . 56 I.2 Test specimens . 58 Annex J (informative)
Choice of non-destructive test methods for welds . 60 J.1 Internal imperfections . 60 J.2 Surface imperfections . 60 Annex K (normative)
Hydraulic pressure test. 61 K.1 Temporary fittings . 61 K.2 Pressure gauges . 61 K.3 Pressurizing agent . 61 K.4 Avoidance of shock . 61 K.5 Applied pressure . 61 Annex L (informative)
Environmental checklist . 62 Bibliography . 63
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+A1:2014

(ISO 148-1) EN ISO 3452-1, Non-destructive testing — Penetrant testing — Part 1: General principles (ISO 3452-1) SIST EN 12493:2013+A1:2014

(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 9712, Non-destructive testing — Qualification and certification of NDT personnel (ISO 9712) EN ISO 14732, Welding personnel — Qualification testing of welding operators and weld setters for mechanized and automatic welding of metallic materials (ISO 14732) EN ISO 15609-1, Specification and qualification of welding procedures for metallic materials — Welding procedure specification — Part 1: Arc welding (ISO 15609-1) 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 (ISO15614-1) EN ISO 17636-1, Non-destructive testing of welds — Radiographic testing — Part 1: X- and gamma-ray techniques with film (ISO 17636-1) EN ISO 17636-2, Non-destructive testing of welds — Radiographic testing — Part 2: X- and gamma-ray techniques with digital detectors (ISO 17636-2) 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 17639, Destructive tests on welds in metallic materials — Macroscopic and microscopic examination of welds (ISO 17639) EN ISO 17640, Non-destructive testing of welds — Ultrasonic testing — Techniques, testing levels, and assessment (ISO 17640) EN ISO 19232-2, Non-destructive testing — Image quality of radiographs — Part 2: Determination of the image quality value using step/hole-type image quality indicators (ISO 19232-2) SIST EN 12493:2013+A1:2014

EN 10028-3, listed in Table A.1, are considered compatible with LPG complying with the limitations on corrosiveness as specified in ISO 9162. 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 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 pressure vessel. 4.6 Non-metallic materials (gaskets) Non-metallic materials (gaskets) shall be compatible with both phases of LPG over the range of pressures and temperatures for which the road tanker is designed (see 4.2, Annex B and Annex C). 4.7 Inspection documents for materials Pressure retaining parts and non-pressure retaining parts directly welded to the pressure vessel shall be provided with the material manufacturers’ certificates conforming to EN 10204:2004 certificate type 3.1. Other parts shall have certificates conforming to EN 10204:2004 certificate type 2.2. SIST EN 12493:2013+A1:2014

(1) where A1 minimum elongation at fracture (%) of steel chosen under tensile stress; e1 minimum shell thickness in chosen steel, in mm; e0 minimum thickness in reference steel, in mm; Rm1 minimum tensile strength of steel chosen, in N/mm2. !The minimum shell thickness shall not be less than calculated according to ADR (paragraph 6.8.2.1.17 of the 2015 edition of ADR)." 5.3 Surge plates 5.3.1 Where it is intended that pressure vessels will be operated in excess of 20 % full or less than 80 % full, surge plates shall be fitted. The surge plates shall be designed to permit full internal inspection of the pressure vessel. The volume between any two plates or a plate and the end of the pressure vessel shall not exceed 7 500 l. 5.3.2 Pressure vessels in excess of 4,0 m in length that are intended to be operated in excess of 20 % full or less than 80 % full shall be fitted with transverse surge plates at a maximum spacing of 4,0 m and shall be designed to permit full internal inspection of the pressure vessel. SIST EN 12493:2013+A1:2014
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