SIST EN 12807:2010
(Main)LPG equipment and accessories - Transportable refillable brazed steel cylinders for liquefied petroleum gas (LPG) - Design and construction
LPG equipment and accessories - Transportable refillable brazed steel cylinders for liquefied petroleum gas (LPG) - Design and construction
This European Standard specifies the minimum requirements for the design, construction and testing during manufacture of transportable refillable brazed steel Liquefied Petroleum Gas (LPG) cylinders, of water capacity from 0,5 l up to and including 15 l, exposed to ambient temperatures.
This European Standard applies only to cylinders having a circular cross-section without any longitudinal joint.
FlüssiggasGeräte und Ausrüstungsteile - Ortsbewegliche, wiederbefüllbare, hartgelötete Flaschen aus Stahl für Flüssiggas (LPG) - Konstruktion und Herstellung
Diese Europäische Norm legt die Mindestanforderungen an die Konstruktion, die Herstellung und die während der Herstellung erfolgende Prüfung ortsbeweglicher, wiederbefüllbarer, hartgelöteter Flaschen aus Stahl für Flüssiggas (LPG) mit einem Fassungsraum von 0,5 l bis einschließlich 15 l fest, die Umgebungstemperaturen ausgesetzt sind. Die vorliegende Europäische Norm gilt nur für Flaschen mit kreisförmigem Querschnitt, ohne Längsnaht.
Bouteilles transportables et rechargeables en acier brasé pour gaz de pétrole liquéfiés (GPL) - Conception et fabrication
La présente norme européenne définit les exigences minimales concernant la conception, la fabrication et les
essais lors de la fabrication des bouteilles transportables et rechargeables en acier brasé pour gaz de pétrole
liquéfiés (GPL), d’une capacité en eau comprise entre 0, 5 l et 15 l inclus et exposées aux températures
ambiantes.
La présente norme européenne s’applique exclusivement aux bouteilles à section circulaire ne comportant
pas de joints longitudinaux.
Oprema in pribor za utekočinjeni naftni plin (UNP) - Premične, ponovno polnljive, trdo spajkane jeklenke iz jekla za utekočinjeni naftni plin (UNP) - Konstruiranje in izdelava
Ta evropski standard določa minimalne zahteve za konstruiranje, izdelavo in preskušanje med proizvodnjo za premične, ponovno polnljive, trdo spajakane jeklenke iz jekla za utekočinjeni naftni plin (UNP), z vodno kapaciteto od 0,5 l do in vključno 15 l, izpostavljene temperaturam v prostoru. Ta evropski standard velja le za jeklenke, ki imajo krožni prerez brez kakršnega koli podolžnega spoja.
General Information
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Standards Content (Sample)
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
SIST EN 12807:2010
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
EN 12807:2009 (E) 2 Contents Page Foreword .4 Introduction .5 1 Scope .6 2 Normative references .6 3 Terms, definitions and symbols .6 3.1 Terms and definitions .6 3.2 Symbols .7 4 Materials .7 5 Design .9 5.1 General requirements .9 5.2 Calculation of cylindrical shell thickness . 10 5.3 Design of torispherical and semi-ellipsoidal ends concave to pressure. 10 5.4 Design of ends of shapes other than torispherical and semi-ellipsoidal . 14 5.5 Minimum wall thickness . 14 5.6 Design of openings. 15 5.7 Valve protection . 15 5.8 Non-pressure containing attachments . 15 6 Construction and workmanship . 15 6.1 Brazing qualification . 15 6.2 Plates and pressed parts . 16 6.3 Brazed joints . 16 6.4 Tolerances . 16 6.4.1 Out of roundness . 16 6.4.2 Straightness . 16 6.4.3 Verticality . 17 6.5 Heat treatment . 17 6.6 Protective coating . 17 6.7 Closure of openings . 17 7 Tests and examinations . 17 7.1 General . 17 7.2 Types of test and evaluation of the test results . 17 7.3 Material testing . 18 7.4 Tensile test . 19 7.4.1 Parent material . 19 7.4.2 Joints . 19 7.5 Bend test . 20 7.5.1 Procedure . 20 7.5.2 Requirements . 21 7.6 Burst test under hydraulic pressure . 22 7.6.1 Procedure . 22 7.6.2 Requirements . 23 7.7 Pressure test . 24 7.7.1 Procedure . 24 7.7.2 Requirements . 24 7.8 Ultrasonic examination . 24 7.8.1 Procedure . 24 7.8.2 Assessment . 24 7.8.3 Requirements . 24 SIST EN 12807:2010
EN 12807:2009 (E) 3 7.9 Macro examination . 24 7.9.1 Procedure . 24 7.9.2 Requirements . 24 7.10 Visual examination of the surface of the joint . 25 7.10.1 Procedure . 25 7.10.2 Requirements . 25 7.11 Fatigue test . 25 7.11.1 Procedure . 25 7.11.2 Requirement . 25 8 Technical requirements for type approval . 25 8.1 Extent of testing . 25 8.2 Cylinder types . 26 8.3 Type approval certificate . 26 9 Production testing and examination requirements . 26 9.1 Tests and examinations applicable to all cylinders . 26 9.2 Ultrasonic examination . 27 9.3 Macro examination . 27 9.4 Examination of the valve boss joint . 27 9.5 Examination of non-pressure containing joints . 27 9.6 Unacceptable imperfections found by the ultrasonic or macro examinations . 27 9.7 Batch testing (Mechanical / Burst tests) . 28 9.7.1 Batch . 28 9.7.2 Inspection lots . 28 9.7.3 Rate of sampling . 28 9.7.4 Additional checks . 29 9.8 Failure to meet mechanical and burst test requirements . 30 9.8.1 Mechanical . 30 9.8.2 Burst . 30 9.8.3 Re-test . 30 9.8.4 Resubmission of an inspection lot . 30 10 Marking . 31 11 Certificates . 31 Bibliography . 32
SIST EN 12807:2010
EN 12807:2009 (E) 4 Foreword This document (EN 12807:2009) 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 December 2009, and conflicting national standards shall be withdrawn at the latest by December 2009. This document supersedes EN 12807:2001. The main technical changes are a widening of the range of materials permitted, reference to the latest EN brazing standards, a reduction in the minimum required burst pressure from 50 bar to 35 bar and simplification of the marking requirements by reference to EN 14894. This document has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association, and supports essential requirements of EU Directive(s). This European Standard has been submitted for reference into the RID and/or in the technical annexes of the ADR.
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
EN 12807:2009 (E) 5 Introduction This European Standard calls for the use of substances and procedures that may be injurious to health if adequate precautions are not taken. It refers only to technical suitability and does not absolve the user from legal obligations relating to health and safety at any stage. 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 gauge unless otherwise stated. NOTE This 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 may be beneficial to refer to the leaflet “measurement uncertainty leaflet (SP INFO 2000 27 uncertainty pdf)”.
SIST EN 12807:2010
EN 12807:2009 (E) 6 1 Scope This European Standard specifies the minimum requirements for the design, construction and testing during manufacture of transportable refillable brazed steel Liquefied Petroleum Gas (LPG) cylinders, of water capacity from 0,5 l up to and including 15 l, exposed to ambient temperatures.
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
SIST EN 12807:2010
EN 12807:2009 (E) 7 3.2 Symbols a Calculated thickness of the cylindrical shell, in millimetres A Percentage elongation after fracture b Calculated thickness of the end of the cylinder, in millimetres C Shape factor for ends (see Table 2, Figure 2 and Figure 3) D Outside diameter of the cylinder as given in the design drawing (see Figure 1), in millimetres Dp Width of the bend test mandrel (see Figure 7), in millimetres e Actual thickness of the material in the finished cylinder (at the point under consideration), in millimetres h Height of the cylindrical part of the end (see Figure 1), in millimetres H Outside height of the domed part of the end (see Figure 1), in millimetres Lo Original gauge length of the test piece, in accordance with EN 10002-1, in millimetres n Ratio of width of bend test mandrel to the thickness of the test piece at the joint (see Table 5) Pc Calculation pressure (1 bar = 105 Pa = 105 N/m2), used to calculate the minimum required thickness of the cylindrical shell and ends, in bar Pb Maximum pressure attained during the burst test, in bar Ph Actual test pressure applied to the cylinder by the manufacturer, in bar r Inside knuckle radius of the torispherical end, in millimetres R Inside spherical radius of the torispherical end, in millimetres Rg Minimum value of tensile strength guaranteed by the cylinder manufacturer for the finished cylinder, in newtons per square millimetre Ro Minimum value of yield strength guaranteed by the cylinder manufacturer for the finished cylinder, in newtons per square millimetre Rm Actual value of tensile strength determined by the tensile test specified in 7.4, in newtons per square millimetre ReH Upper yield strength, in newtons per square millimetre, as defined in EN 10002-1 Rp0,2 Proof strength, non proportional extension in newtons per square millimetre, as defined in
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
EN 12807:2009 (E) 8 The materials shall be suitable for a brazing temperature of 1 100 ûC for the duration of the brazing operation, without significant grain growth.
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
EN 12807:2009 (E) 9 Table 1 — Material requirements Element Limits%
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
EN 12807:2009 (E) 10 5.1.4 A drawing, which includes full dimensions that define the cylinder type (see 8.2) and the specification of the material, shall be produced. 5.2 Calculation of cylindrical shell thickness The wall thickness, a, of the cylindrical shell shall be not less than: coc)(15 PRDPa+××=
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
EN 12807:2009 (E) 11 NOTE For torispherical ends the height H can be calculated using: )](D) [(]D)[()(b r
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
EN 12807:2009 (E) 12
Figure 2 — Values of shape factor C for H/D between 0,2 and 0,25 SIST EN 12807:2010
EN 12807:2009 (E) 13
Figure 3 — Values of shape factor C for H/D between 0,25 and 0,5 SIST EN 12807:2010
EN 12807:2009 (E) 14 Table 2 — Relationship between H/D and shape factor C H/D C H/D C 0,25 1,000 0,38 0,612 0,26 0,931 0,39 0,604 0,27 0,885 0,40 0,596 0,28 0,845 0,41 0,588 0,29 0,809 0,42 0,581 0,30 0,775 0,43 0,576 0,31 0,743 0,44 0,572 0,32 0,713 0,45 0,570 0,33 0,687 0,46 0,568 0,34 0,667 0,47 0,566 0,35 0,649 0,48 0,565 0,36 0,633 0,49 0,564 0,37 0,621 0,50 0,564 NOTE Intermediate values can be obtained by linear interpolation.
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
EN 12807:2009 (E) 15 5.6 Design of openings 5.6.1 All openings shall be located in one end of the cylinder. 5.6.2 Each opening in the cylinder shall be reinforced, either by a valve boss or pad securely attached by brazing. The suitability of the design of the reinforcement or design changes within an approved type of cylinder shall be confirmed by design calculations or a fatigue test in accordance with 7.11. 5.6.3 The joints of the opening reinforcement shall be not less than bD2,5 mm from any circumferential joints. 5.6.4 Unless otherwise specified, valve boss threads shall conform to an established dimensional specification. NOTE Suitable thread specifications include ISO 10920 for 25E thread and EN ISO 11116-1 for the 17E thread. 5.7 Valve protection The design of a cylinder shall provide protection for valves against damage in order to avoid the release of the contents, unless the valve is protected by other means. When the valve protection is integral with the cylinder, this shall be demonstrated by drop testing in accordance with EN ISO 11117:2008, Clause 6.7. NOTE When the cylinder is not provided with integral valve protection, the manufacturer should specify that cylinders containing LPG should be conveyed in crates or cradles or should be provided during transportation with some other effective valve protection. Otherwise the cylinder should be fitted with valves that have demonstrated, by impact tests in accordance with EN 13152 or EN 13153, that the valve can withstand damage without leakage of the contents. 5.8 Non-pressure containing attachments 5.8.1 Attachments shall be designed so as to avoid trapping water and to permit external inspection of the attachment joints. They shall be clear of circumferential joints. 5.8.2 Where a foot-ring is fitted, it shall be of adequate strength to provide stability and be attached so that it does not prevent inspection of any pressure containing joints. Any foot-ring shall be suitably drained and the space enclosed by the foot-ring suitably ventilated e.g. by means of openings. 6 Construction and workmanship NOTE ADR [5] and RID [6] require the manufacturing process to be subject to a survey by the relevant body to ensure the product is produced in conformity with the provisions of the typ
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