1、April 2008DEUTSCHE NORM English price group 16No part of this standard may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).ICS 23.020.30!$NL“1434194www
2、.din.deDDIN EN 1442LPG equipment and accessories Transportable refillable welded steel cylinders for LPG Design and construction (includes Amendment A1:2008)English version of DIN EN 1442:2008-04Flssiggas-Gerte und Ausrstungsteile Ortsbewegliche, wiederbefllbare, geschweite Flaschen aus Stahl fr Fls
3、siggas (LPG) Gestaltung und Konstruktion (enthlt nderung A1:2008)Englische Fassung DIN EN 1442:2008-04SupersedesDIN EN 1442:2006-09www.beuth.deDocument comprises 40 pagesDIN EN 1442:2008-04 2 National foreword This standard has been prepared by Technical Committee CEN/TC 286 “Liquefied Petroleum Gas
4、 equipment and accessories” (Secretariat: NSAI, Ireland). The responsible German body involved in its preparation was the Normenausschuss Druckgasanlagen (Pressure Vessels Standards Committee), Technical Committee NA 016-00-06 AA Flssiggas-Gerte und Ausrstung; Spiegelausschuss zu CEN/TC 286. The sta
5、rt and finish of text introduced or altered by amendment is indicated in the text by tags ! “. Amendments This standard differs from DIN EN 1442:2006-09 as follows: a) Clause 2 “Normative references” has been revised. b) Subclause 5.1.3 has been amended. c) Subclause 7.7.1.2 has been amended. d) Sub
6、clause 7.8.1 has been amended. e) Clause 10 “Marking” has been revised. f) Annex A “Standard specific marking” has been revised. g) The bibliography has been revised. Previous editions DIN EN 1442: 1998-04, 2002-06, 2006-09 DIN EN 1442 Corrigendum 1: 2000-02 EUROPEAN STANDARD NORME EUROPENNE EUROPIS
7、CHE NORM EN 1442:2006+A1 January 2008 ICS 23.020.30 Supersedes EN 1442:2006English Version LPG equipment and accessories - Transportable refillable welded steel cylinders for LPG - Design and construction quipements pour GPL et leurs accessoires - Bouteilles en acier soud transportables et rechargea
8、bles pour gaz de ptrole liqufis (GPL) - Conception et fabrication Flssiggas-Gerte und Ausrstungsteile - Ortsbewegliche, wiederbefllbare, geschweite Flaschen aus Stahl fr Flssiggas (LPG) - Gestaltung und Konstruktion This European Standard was approved by CEN on 18 May 2006 and includes Amendment 1 a
9、pproved by CEN on 20 December 2007. 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 nat
10、ional standards 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 translation under the responsibility of a CEN member into its own language and
11、 notified to the CEN Management Centre has the same status as the official 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, Luxembour
12、g, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: rue de Stassart, 36 B-1050 Brussels 2008 CEN All rights
13、 of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 1442:2006+A1:2008: EEN 1442:2006+A1:2008 (E) 2 Contents Page Foreword4 Introduction .5 1 Scope 6 2 Normative references 6 3 Terms, definitions and symbols.7 3.1 Terms and definitions .7 3.2 Symbols
14、 7 4 Materials .8 5 Design .9 5.1 General requirements9 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 thickness14 5.6 Desig
15、n of openings15 5.7 Valve protection.15 5.8 Non-pressure containing attachments15 6 Construction and workmanship.15 6.1 Welding qualification.15 6.2 Plates and pressed parts 16 6.3 Welded joints16 6.4 Tolerances 18 6.4.1 Out-of-roundness.18 6.4.2 Straightness .18 6.4.3 Verticality18 6.5 Closure of o
16、penings 18 6.6 Heat treatment18 7 Tests and examinations 19 7.1 General19 7.2 Types of test and evaluation of test results19 7.3 Test specimens and related tests and examinations.19 7.3.1 Two-piece cylinders 19 7.3.2 Three-piece cylinders20 7.3.3 Valve boss welds .21 7.4 Tensile test .22 7.4.1 Paren
17、t metal .22 7.4.2 Welds 22 7.5 Bend test.22 7.5.1 Procedure .22 7.5.2 Requirements.23 7.6 Burst test under hydraulic pressure25 7.6.1 Procedure .25 7.6.2 Requirements.25 7.7 Pressure test 26 7.7.1 Procedure .26 7.7.2 Requirements.26 7.8 Radiographic examination26 7.8.1 Procedure .26 DIN EN 1442:2008
18、-04 EN 1442:2006+A1:2008 (E) 3 7.8.2 Assessment .27 7.8.3 Requirements.27 7.9 Macro examination 28 7.9.1 Procedure.28 7.9.2 Requirement.28 7.10 Visual examination of the surface of the weld .28 7.10.1 Procedure.28 7.10.2 Requirements.28 7.11 Fatigue test 28 7.11.1 Procedure.28 7.11.2 Requirements.29
19、 8 Technical requirements for type approval29 8.1 Extent of testing 29 8.2 Cylinder types29 8.3 Type approval certificate 30 9 Production testing and examination requirements .30 9.1 Tests and examinations applicable to all cylinders.30 9.2 Radiographic examination30 9.3 Macro examination 31 9.4 Exa
20、mination of valve boss weld 31 9.5 Examination of non-pressure containing attachment welds31 9.6 Unacceptable imperfections found by the radiographic or macro examinations 31 9.7 Batch testing (mechanical / burst tests) .32 9.7.1 Batch.32 9.7.2 Inspection lots .32 9.7.3 Rate of sampling32 9.7.4 Addi
21、tional checks34 9.8 Failure to meet mechanical and burst test requirements .34 9.8.1 Mechanical .34 9.8.2 Burst .34 9.8.3 Batch retest34 9.8.4 Resubmission of a batch35 9.8.5 Weld repairs .35 10 Marking.35 11 Certificate .36 DIN EN 1442:2008-04 Annex A (normative) ! Standard specific marking “ .Bibl
22、iography38 37EN 1442:2006+A1:2008 (E) 4 Foreword This document (EN 1442:2006+A1:2008) 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 stan
23、dard, either by publication of an identical text or by endorsement, at the latest by July 2008, and conflicting national standards shall be withdrawn at the latest by July 2008. This document supersedes !EN 1442:2006“. This document includes Amendment 1, approved by CEN on 2007-12-20. The start and
24、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 RID and/or in the technical annexes of the ADR. Therefore the standards listed in the normative references and covering basic requirements of the R
25、ID/ADR not addressed within the present standard are normative only when the standards themselves are referred to in the RID and/or in the technical annexes of the ADR. This European Standard has been extensively re-formatted to align with other more recent LPG cylinder standards. The main technical
26、 changes are a widening of the range of materials permitted, reference to the latest ISO welding standards, the introduction of radioscopy as a permitted alternative to radiographic examination of welds, a reduction in the minimum required burst pressure from 50 bar to 35 bar and simplification of t
27、he marking requirements by reference to EN 14894. 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, G
28、ermany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. DIN EN 1442:2008-04 EN 1442:2006+A1:2008 (E) 5 Introduction This European Standard calls for the
29、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 Standa
30、rd that the execution of its provisions is entrusted to appropriately qualified and experienced people. All pressures are gauge unless otherwise stated. DIN EN 1442:2008-04 EN 1442:2006+A1:2008 (E) 6 1 Scope This European Standard specifies the minimum requirements for the design, construction and t
31、esting during manufacture of transportable refillable welded steel Liquefied Petroleum Gas (LPG) cylinders, of water capacity from 0,5 l up to and including 150 l, exposed to ambient temperatures. This European Standard applies only to cylinders having a circular cross-section. 2 Normative reference
32、s 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 2871, Qualification test of welders Fusion w
33、elding Part 1: Steels EN 4621, Non-destructive testing Image quality of radiographs Part 1: Image quality indicators (wire type) Determination of image quality value EN 4622, Non-destructive testing Image quality of radiographs Part 2: Image quality indicators (step/hole type) Determination of image
34、 quality value EN 473:2000, Non-destructive testing Qualification and certification of NDT personnel General principles EN 895, Destructive tests on welds in metallic materials Transverse tensile test EN 910, Destructive tests on welds in metallic materials Bend tests EN 962:1996, Transportable gas
35、cylinders Valve protection caps and valve guards for industrial and medical gas cylinders Design, construction and tests EN 970, Non-destructive examination of fusion welds Visual examination EN 1321, Destructive tests on welds in metallic materials Macroscopic and microscopic examination of welds E
36、N 1418, Welding personnel Approval testing of welding operators for fusion welding and resistance weld setters for fully mechanized and automatic welding of metallic materials EN 1435:1997, Non-destructive examination of welds Radiographic examination of welded joints EN 100021, Metallic materials T
37、ensile 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 147841, Non-destructive testing Industrial computed radiography with storage phosphor imaging plates Classification
38、 of systems EN 147842, Non-destructive testing Industrial computed radiography with storage phosphor imaging plates General principles for testing of metallic materials using X-rays and gamma rays“ !EN 14894:2006“, LPG equipment and accessories Cylinder and drum marking EN ISO 643, Steels Micrograph
39、ic determination of the apparent grain size (ISO 643:2003) DIN EN 1442:2008-04 EN 1442:2006+A1:2008 (E) 7 EN ISO 5817:2003, Welding Fusion welded joints in steel, nickel, titanium and their alloys (beam welding excluded) Quality levels for imperfections (ISO 5817:2003) EN ISO 65201, Welding and alli
40、ed processes Classification of geometric imperfections in metallic materials Part 1: Fusion welding (ISO 6520-1:1998) 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 15613, Spec
41、ification and qualification of welding procedures for metallic materials Qualification based on pre-production welding test (ISO 15613:2004) 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 a
42、rc welding of nickel and nickel alloys (ISO 15614-1:2004) 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 ReHor 0,2 % proof strength (non-proportional elongation), Rp0,2
43、, for steels that do not exhibit a defined yield 3.1.2 normalised condition resulting from heat treatment in which a finished cylinder is heated to a uniform temperature above the upper critical point (Ac3) of the steel and then cooled under controlled conditions 3.1.3 stress relieved condition resu
44、lting from heat treatment in which a finished cylinder is heated to a uniform temperature below the lower critical point (Ac1) of the steel and cooled in a still atmosphere, the object of which is to reduce the residual stresses without altering the metallurgical structure of the steel 3.1.4 weld-ov
45、errun zone area on a circumferential weld where the weld metal deposition has carried on beyond the start point 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 sh
46、ape 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. Dpoutside diameter of a bend test mandrel (see Figure 8), in millimetres. DIN EN 1442:2008-04 EN 1442:2006+A1:2008 (E) 8 e actual thickness of t
47、he 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. J stress reduction factor. Looriginal gauge length of the
48、 test piece, in accordance with EN 100021, in millimetres. n ratio of diameter of bend test former to the thickness of the test piece, (see Table 6). Pccalculation pressure (1 bar = 105Pa = 105N/m2), used to calculate the minimum required thickness of the cylindrical shell and ends, in bar. Pbmaximu
49、m pressure attained during the burst test, in bar. Phactual test pressure applied to the cylinder by the manufacturer, in bar. Phminminimum permissible test pressure, in bar. r inside knuckle radius of the torispherical end, in millimetres. R inside spherical radius of the torispherical end, in millimetres. Rgminimum value of tensile strength guaranteed by the cylinder manufacturer for the finished cylinder, in newtons per square millimetre. Rominimum value of yield strength
