1、BRITISH STANDARDBS EN 14638-1:2006Transportable gas cylinders Refillable welded receptacles of a capacity not exceeding 150 litres Part 1: Welded austenitic stainless steel cylinders made to a design justified by experimental methodsThe European Standard EN 14638-1:2006 has the status of a British S
2、tandardICS 23.020.30g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58BS EN 14638-1:2006This British Standard was published under the authority of the
3、 Standards Policy and Strategy Committee on 31 May 2006 BSI 2006ISBN 0 580 48374 6National forewordThis British Standard is the official English language version of EN 14638-1:2006. The UK participation in its preparation was entrusted by Technical Committee PVE/3, Gas containers, to Subcommittee PV
4、E/3/3, Transportable gas containers, which has the responsibility to: A list of organizations represented on this subcommittee can be obtained on request to its secretary.Cross-referencesThe British Standards which implement international or European publications referred to in this document may be
5、found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online.This publication does not purport to include all the necessary provisions of a contract. Users are re
6、sponsible for its correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and kee
7、p UK interests informed; monitor related international and European developments and promulgate them in the UK.Summary of pagesThis document comprises a front cover, an inside front cover, the EN title page, pages 2 to 34, an inside back cover and a back cover.The BSI copyright notice displayed in t
8、his document indicates when the document was last issued.Amendments issued since publicationAmd. No. Date CommentsEUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN 14638-1May 2006ICS 23.020.30English VersionTransportable gas cylinders - Refillable welded receptacles of acapacity not exceeding 150 li
9、tres - Part 1: Welded austeniticstainless steel cylinders made to a design justified byexperimental methodsBouteilles gaz transportables - Rcipients soudsrechargeables dune capacit infrieure ou gale 150litres - Partie 1: Bouteilles en acier inoxydable austnitiquesoudes, conues selon des mthodes expr
10、imentalesOrtsbewegliche Gasflaschen - Wiederbefllbaregeschweite Gefe mit einem Fassungsraum von nichtmehr als 150 Liter - Teil 1: Flaschen aus geschweitem,austenitischen, nichtrostendem Stahl, ausgelegt nachexperimentellen VerfahrenThis European Standard was approved by CEN on 23 March 2006.CEN memb
11、ers 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
12、 to the Central Secretariat 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 Central Secretariat has the same
13、status as the officialversions.CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania,Slovakia
14、, Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGManagement Centre: rue de Stassart, 36 B-1050 Brussels 2006 CEN All rights of exploitation in any form and by any means reservedworldwide for CE
15、N national Members.Ref. No. EN 14638-1:2006: EEN 14638-1:2006 (E) 2 Contents Page Foreword 3 Introduction . 4 1 Scope 5 2 Normative references. 5 3 Terms, definitions and symbols 6 4 Materials and heat treatment . 8 5 Design . 9 6 Construction and workmanship 10 7 New design tests 12 8 Marking 24 9
16、Conformity evaluation criteria. 24 10 Records. 24 Annex A (normative) Non destructive examination (NDE) of welds 25 Annex B (normative) Description, evaluation of manufacturing defects and conditions for rejection of welded stainless steel gas cylinders at time of final visual inspection by the manu
17、facturer 27 Annex C (informative) Model - Production certificate. 30 Annex D (informative) Recommendations to be applied in case of heat treatments on austenitic stainless steels . 33 Bibliography 34 EN 14638-1:2006 (E) 3 Foreword This document (EN 14638-1:2006) has been prepared by Technical Commit
18、tee CEN/TC 23 “Transportable gas cylinders”, the secretariat of which is held by BSI. 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 November 2006, and conflicting national standards shall be wit
19、hdrawn at the latest by November 2006. This document has been submitted for reference into the RID and/or in the technical annexes of the ADR. Therefore in this context the standards listed in the normative references and covering basic requirements of the RID/ADR not addressed within the present st
20、andard are normative only when the standards themselves are referred to in the RID and/or in the technical annexes of the ADR. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Be
21、lgium, 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. EN 14638-1:2006 (E) 4 Introduc
22、tion The purpose of this European Standard is to provide a specification for the design, manufacture, inspection and approval of welded austenitic stainless steel gas cylinders for use in the countries of the CEN members. The specifications given in the present standard establish the methodology to
23、be adopted in order to demonstrate that a cylinder conforms to the functional requirements demanded, based on the experience about materials, design prescriptions, manufacturing processes and controls manufacturing. This European Standard comprises experimental methods and appropriate stress analysi
24、s calculations. It does not cover methods exclusively by means of traditional calculation. EN 14638-1:2006 (E) 5 1 Scope This European Standard gives minimum requirements concerning material, design, construction and workmanship, procedures and tests at manufacture of refillable transportable welded
25、 cylinders made of austenitic stainless steel, justified by experimental methods, of water capacities from 0,5 l up to and including 150 l for compressed or liquefied gases and of a test pressure up to 90 bar. NOTE This European Standard may also be used as a guideline for cylinders less than 0,5 li
26、tres water capacity. This European Standard is primarily for industrial gases other than LPG but may also be applied for LPG. However for dedicated LPG cylinders, see EN 14140, Transportable refillable welded steel cylinders for liquefied petroleum gas (LPG) Alternative design and construction prepa
27、red by CEN/TC 286 Liquefied petroleum gas equipment and accessories. 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 do
28、cument (including any amendments) applies. EN 287-1, Qualification test of welders - Fusion welding - Part 1: Steels EN 473, Non destructive testing Qualification and certification of NDT personnel General principles EN 910, Destructive tests on welds in metallic materials Bend tests EN 962, Transpo
29、rtable gas 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 1435, Non destructive examination of welds Radiographic examination of welded joints EN 10002-
30、1, Metallic materials Tensile testing Part 1: Method of test at ambient temperature EN 10028-7, Flat products made of steels for pressure purposes Part 7: Stainless steels EN 10045-1, Metallic materials Charpy impact test Part1: Test method EN 10088-2, Stainless steels - Part 2: Technical delivery c
31、onditions for sheet/plate and strip of corrosion resisting steels for general purposes EN 13445-2, Unfired pressure vessels Part 2: Materials EN ISO 3651-2, Determination of resistance to intergranular corrosion of stainless steels Part 2: Ferritic, austenitic and ferritic-austenitic (duplex) stainl
32、ess steels Corrosion test in media containing sulfuric acid (ISO 3651-2:1998) EN ISO 5817, Welding Fusion-welded joints in steel, nickel, titanium and their alloys (beam welding excluded) Quality levels for imperfections (ISO 5817:2003) EN ISO 7539-6, Corrosion of metals and alloys Stress corrosion
33、testing Part 6: Preparation and use of pre-cracked specimens for tests under constant load or constant displacement (ISO 7539-6:2003) EN 14638-1:2006 (E) 6 EN ISO 10692-2, Gas cylinders Gas cylinder valve connections for use in the microelectronics industry Part 2: Specification and type testing for
34、 valve to cylinder connections (ISO 10692-2:2001) EN ISO 11114-1, Transportable gas cylinders Compatibility of cylinder and valve materials with gas contents Part 1: Metallic materials (ISO 11114-1:1997) prEN ISO 13769: 2005, Gas cylinders Stampmarking (ISO 13769:2002) EN ISO 15607, Specification an
35、d qualification of welding procedures for metallic materials General rules (ISO 15607:2003) 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
36、-1:2004) ISO 2504:1973, Radiography of welds and viewing conditions for films Utilization of recommended patterns of image quality indicators (I.Q.I.) 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
37、stress either the 0,2 % proof stress, Rp0,2, or the 1,0 % proof stress, Rp1,0where there is no apparent definite value for Rp0,2, as for example, is the case for austenitic steels 3.1.2 solution annealing heat treatment in which the steel is heated to a uniform temperature above the solid solubility
38、 temperature followed by rapid cooling 3.1.3 parent material material corresponding to the cylinder after finishing its manufacturing process and ready for service/operation NOTE The material characteristics may be variable at any point of the cylinder. 3.1.4 batch consists of finished cylinders mad
39、e consecutively during the same or consecutive days to the same design, size and material specifications and from the same material supplier for each pressure containing parts on the same automatic welding machines and, if applicable, heat-treated under the same conditions of temperature and duratio
40、n NOTE 1 In this context consecutively need not imply continuous production. NOTE 2 This definition allows different suppliers to be used for the different pressure containing parts within a batch, e.g. one supplier for heads, another for bases. 3.1.5 cylinder transportable pressure receptacle of a
41、water capacity not exceeding 150 l EN 14638-1:2006 (E) 7 3.1.6 finished cylinder cylinder which is fully assembled and appropriately stampmarked, but without any external coatings 3.1.7 cryoforming process where the cylinder is subjected to a controlled low temperature deformation treatment that res
42、ults in a permanent increase in strength 3.1.8 coldforming final deformation treatment at ambient temperature given to the prefabricated cylinder, known as the preform, which results in a permanent increase in the material strength 3.1.9 valve boss or pad connection between valve and cylinder 3.2 Sy
43、mbols a Minimum thickness, in millimetres, for calculation of weld clearance (see Figure 1); asicalculated minimum thickness, in millimetres, at a determined area “i” of the cylinder; abiminimum thickness, in millimetres, at a determined area “i” of the cylinder (including any corrosion allowance) g
44、uaranteed by the manufacturer; Ai percentage elongation after fracture, at a determined area “i” of the cylinder; i area of the cylinder used for the calculation under consideration; L, original gauge length, in millimetres, in accordance with EN 10002-1; n ratio of diameter of bend test former to t
45、he thickness of the test piece; Phtest pressure, in bar, above atmospheric pressure; Pbminimum burst pressure, in bar; Pbaactual burst pressure, in bar; Rpi1,0minimum value of 1,0 % proof stress in MPa, guaranteed by the cylinder manufacturer for the finished cylinder, at a determined area “i” of th
46、e cylinder; Rgiminimum value of tensile stress, in MPa, guaranteed by the cylinder manufacturer for the finished cylinder, at a determined area “i” of the cylinder; Rmiactual value of tensile stress, in MPa, determined by tensile test specified in Clause 7, at a determined area “i” of the cylinder;
47、Reiyield stress means the stress at which a permanent elongation of 1 % of the gauge length on the test-piece, has been produced, at a determined area “i” of the cylinder; Reaiactual value of yield stress used for calculation, in MPa, at a determined area “i” of the cylinder; EN 14638-1:2006 (E) 8 s
48、 nominal butt weld thickness. 4 Materials and heat treatment 4.1 General 4.1.1 The cylinder materials subject to pressure shall be of austenitic stainless steel according to EN 10088 or EN 10028-7 or other austenitic stainless steels standards, provided that they satisfy the requirements of this Eur
49、opean Standard. NOTE These materials correspond to the materials received by the manufacturer, before having been submitted to any manufacturing process. 4.1.2 The welding consumables shall be such that they are capable of giving consistent welds. The material characteristics on the welds shall have to be considered by design. 4.1.3 Grades of steel used for the cylinder manufacture shall be compatible with the intended gas service, e.g. corrosive gases, embrittling gases according to EN ISO 11114-1.
