EN 12807:2009

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.L]GHODYDFlüssiggas­Geräte und Ausrüstungsteile - Ortsbewegliche, wiederbefüllbare, hartgelötete Flaschen aus Stahl für Flüssiggas (LPG) - Konstruktion und HerstellungBouteilles transportables et rechargeables en acier brasé pour gaz de pétrole liquéfiés (GPL) - Conception et fabricationLPG equipment and accessories - Transportable refillable brazed steel cylinders for liquefied petroleum gas (LPG) - Design and construction23.020.30MHNOHQNHPressure vessels, gas cylindersICS:Ta slovenski standard je istoveten z:EN 12807:2009SIST EN 12807:2010en,fr,de01-december-2010SIST EN 12807:2010SLOVENSKI
STANDARDSIST EN 12807:20021DGRPHãþD

EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 12807June 2009ICS 23.020.30Supersedes EN 12807:2001
English VersionLPG equipment and accessories - Transportable refillablebrazed steel cylinders for liquefied petroleum gas (LPG) -Design and constructionEquipement et accessoires pour GPL - Bouteillestransportables et rechargeables en acier brasé pour gaz depétrole liquéfié (GPL) - Conception et fabricationFlüssiggas-Geräte und Ausrüstungsteile - Ortsbewegliche,wiederbefüllbare, hartgelötete Flaschen aus Stahl fürFlüssiggas (LPG) - Konstruktion und HerstellungThis European Standard was approved by CEN on 14 May 2009.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 CEN 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 CEN Management Centre has the same status as theofficial versions.CEN members are the national standards bodies of Austria, Belgium, Bulgaria, 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 and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre:
Avenue Marnix 17,
B-1000 Brussels© 2009 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 12807:2009: ESIST EN 12807:2010

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. 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, 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 and the United Kingdom. SIST EN 12807:2010

This European Standard applies only to cylinders having a circular cross-section without any longitudinal joint. 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 1044, Brazing – Filler metals EN 10002-1, Metallic materials - Tensile testing - Part 1: Method of test at ambient temperature EN 10120, Steel sheet and strip for welded gas cylinders EN 10204:2004, Metallic products - Types of inspection documents EN 12797, Brazing – Destructive tests of brazed joints EN 12799:2000, Brazing – Non-destructive examination of brazed joints EN 13134, Brazing – Procedure approval EN 14894, LPG equipment and accessories - Cylinder and drum marking EN ISO 11117:2008, Gas cylinders – Valve protection caps and valve guards – Design, construction and tests (ISO 11117:2008) 3 Terms, definitions and symbols 3.1 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1.1 yield strength upper yield strength ReH or 0,2 % proof strength (non-proportional elongation), Rp0,2, for steels that do not exhibit a defined yield 3.1.2 normalised heated to a uniform temperature above the upper critical point (Ac3) of the steel and then cooled under controlled conditions in still air
EN 10002-1 t Thickness of the bend test specimen at the joint 4 Materials 4.1 Materials for shells and end pressings shall be in accordance with EN 10120 or other equivalent material specification or standard meeting the requirements of Table 1. Alternative material specifications shall, as a minimum, specify chemical composition, mechanical properties, heat treatment and delivery conditions. SIST EN 12807:2010

NOTE "Materials" refer to materials in the state before any specific transformation occurring during the manufacturing process. 4.2 All parts brazed to the cylinder shall be brazable and made of material compatible with the cylinder material. 4.3 The brazing consumables (see EN 1044) in the form of wire or paste shall be such that they are capable of giving consistent joints with minimum tensile strength at least equal to that specified for the parent materials in the finished cylinder. 4.4 The cylinder manufacturer shall obtain certificates showing the chemical analysis and details of the mechanical properties of the steel supplied for the construction of the pressure retaining parts. The certificates/reports shall be in accordance with EN 10204:2004, Type 3.1 or higher for shells and ends and Type 2.2 or higher for the valve boss. 4.5 The manufacturer shall maintain a system of identification for the materials used in the construction in order that all materials for pressure parts in the completed cylinder can be traced to their origin. SIST EN 12807:2010

Materials, other than EN 10120, used for the fabrication of cylinders shall be of brazable quality and the following limits shall not be exceeded in the cast analysis: Carbon Silicon Manganese Phosphorus Sulphur Phosphorus plus sulphur
0,22 max. 0,50 max. 0,30 min. to 1,60 max. 0,025 max. 0,020 max. 0,040 max. Use of micro-alloying elements such as niobium, titanium and vanadium shall be limited to the following contents: Niobium Titanium Vanadium Niobium plus vanadium
0,05 max. 0,05 max. 0,05 max. 0,08 max. Where other micro-alloying elements are used, their presence and amounts shall be reported, together with the above, in the steel manufacturer's certificate. Should check analyses be required, they shall be carried out either on specimens taken during manufacture from material in the form as supplied by the steel maker to the cylinder manufacturer or from finished cylinders. 5 Design 5.1 General requirements 5.1.1 The calculation of the wall thickness of the pressure parts shall be based on the yield strength of the material. 5.1.2 For calculation purposes, the value of the yield strength Ro is limited to a maximum of 0,85 Rg. 5.1.3 The calculation pressure (Pc) shall be not less than the higher of:  absolute developed pressure at 65 °C of the highest pressure LPG mixture to be filled minus 1 bar, or  10 bar. NOTE ADR [5] and RID [6], P200 specifies test pressures for tabulated mixtures of LPG (UN 1965 HYDROCARBON GAS MIXTURE LIQUEFIED, N.O.S) irrespective of the absolute pressure at 65 °C. SIST EN 12807:2010

5.3 Design of torispherical and semi-ellipsoidal ends concave to pressure 5.3.1 The shape of ends shall be such that the following conditions are fulfilled:  for torispherical ends R < D ; r
>
0,1 D ; h
>
4 b (see Figure 1),  for semi-ellipsoidal ends H > 0,2 D ; h
>
4 b
(see Figure 1).
Key 1 Torispherical end 2 Semi-ellipsoidal end Figure 1 — Illustration of cylinder ends concave to pressure SIST EN 12807:2010

2b R2
b R
b R H+−++×−+−+=2 5.3.2 The wall thickness, a, of any cylindrical part shall be calculated in accordance with 5.2.
This requirement is not applicable where the length of the cylindrical portion of the cylinder, measured between the beginning of the domed parts of the two ends, is not more thanbD2. In this case the wall thickness shall be not less than that of the domed part. The thickness, b, of the domed part shall be not less than: cocP)R(C DPb+×××=15
In this formula, C is a shape factor, the value of which depends on the ratio H/D. The value of C shall be obtained from Figure 2 or Figure 3/Table 2. SIST EN 12807:2010

Figure 2 — Values of shape factor C for H/D between 0,2 and 0,25 SIST EN 12807:2010

Figure 3 — Values of shape factor C for H/D between 0,25 and 0,5 SIST EN 12807:2010

5.4 Design of ends of shapes other than torispherical and semi-ellipsoidal Ends of shapes other than those covered by 5.3 may be used provided that the adequacy of their design is demonstrated by a fatigue test in accordance with 7.11 or by appropriate stress analysis. For ends convex to pressure, the minimum end thickness shall be not less than 2 times that required by 5.2.
5.5 Minimum wall thickness The minimum wall thickness of the cylindrical shell and ends shall be not less than the greater of:  the values of a and b determined in accordance with 5.2 and 5.3 or 5.4, as appropriate, or  the following values, as appropriate: for D < 100 mm: 1,1 mm for 100 mm < D < 150 mm: [1,1 + 0,008 (D - 100)] mm for D > 150 mm: [0,7250 +D] mm, but not less than 1,5 mm. These formulae apply to cylindrical shells and ends irrespective of whether they are designed by calculation as specified in 5.2 and 5.3 or by testing as specified in 5.4. SIST EN 12807:2010
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