1、BSI Standards PublicationBS EN ISO 7866:2012Gas cylinders Refillable seamless aluminium alloy gas cylinders Design, construction and testingIncorporating corrigendum April 2014BS EN ISO 7866:2012National forewordThis British Standard is the UK implementation of EN ISO 7866:2012. It is identical to I
2、SO 7866:2012, incorporating corrigendum April 2014.It supersedes BS EN 1975:2000, which is withdrawn.The UK participation in its preparation was entrusted to Technical Committee PVE/3, Gas containers.A list of organizations represented on this committee can be obtained on request to its secretary. T
3、his publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. The British Standards Institution 2014.Published by BSI Standards Limited 2014ISBN 978 0 580 86083 6ICS 23.020.30Compliance with a British Standard cannot confer
4、 immunity fromlegal obligations.This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 October 2012.Amendments/corrigenda issued since publicationDate Text affected31 July 2014 Implementation of ISO corrigendum April 2014: Subclause A.2.4.2 updat
5、edBRITISH STANDARDEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 7866 September 2012 ICS 23.020.30 English Version Gas cylinders - Refillable seamless aluminium alloy gas cylinders - Design, construction and testing (ISO 7866:2012) Bouteilles gaz - Bouteilles gaz sans soudure en alliage da
6、luminium destines tre recharges - Conception, construction et essais (ISO 7866:2012) Gasflaschen - Wiederbefllbare nahtlose Gasflaschen aus Aluminiumlegierungen - Auslegung, Bau und Prfung (ISO 7866:2012) This European Standard was approved by CEN on 4 August 2012. CEN members are bound to comply wi
7、th 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 Mana
8、gement 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 st
9、atus 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, Mal
10、ta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2012 CEN All rights
11、 of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 7866:2012: EBS EN ISO 7866:2012EN ISO 7866:2012 (E) 3 Foreword This document (EN ISO 7866:2012) has been prepared by Technical Committee ISO/TC 58 “Gas cylinders“ in collaboration with Technica
12、l Committee 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 March 2013, and conflicting national standards shall be
13、 withdrawn at the latest by March 2013. 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. This document supersedes EN 1975:1999. Accordi
14、ng to the CEN/CENELEC Internal Regulations, the national standards organisations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, G
15、reece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. Endorsement notice The text of ISO 7866:2012 has been approved by CEN as a EN ISO 7866:2012 wi
16、thout any modification. BS EN ISO 7866:2012ISO 7866:2012(E) ISO 2012 All rights reserved iiiContents Page Foreword . v Introduction vi 1 Scope 1 2 Normative references 1 3 Terms and definitions . 1 4 Symbols 2 5 Inspection and testing 4 6 Materials . 4 6.1 General requirements . 4 6.2 Thermal treatm
17、ents . 5 6.3 Test requirements . 6 6.4 Failure to meet test requirements 6 7 Design . 7 7.1 General requirements . 7 7.2 Calculation of cylindrical shell thickness . 7 7.3 Design of ends (heads and bases) 7 7.4 Neck design . 8 7.5 Foot rings . 11 7.6 Neck rings 11 7.7 Design drawing 11 7.8 High-stre
18、ngth and/or low-elongation gas cylinder designs 11 8 Construction and workmanship 11 8.1 General . 11 8.2 End forming . 11 8.3 Wall thickness 12 8.4 Surface imperfections and defects 12 8.5 Neck threads 12 8.6 Out-of-roundness 12 8.7 Exposure to heat . 13 8.8 Straightness . 13 8.9 Mean diameter . 13
19、 9 Type approval procedure 13 9.1 General requirements . 13 9.2 Prototype tests 14 9.3 Type approval certificate 15 10 Batch tests . 15 10.1 General requirements . 15 10.2 Tensile test . 17 10.3 Bend test and flattening test 18 10.4 Hydraulic burst test . 19 10.5 Test requirements for high-strength
20、and/or low-elongation gas cylinder designs 21 11 Gas cylinder tests and examinations 22 11.1 General . 22 11.2 Hydraulic test . 22 11.3 Hardness test . 23 11.4 Leakage testing . 23 BS EN ISO 7866:2012ISO 7866:2012(E) iv ISO 2012 All rights reserved11.5 Examination for neck folds .23 11.6 Marking ver
21、ification .23 11.7 Aluminium alloy gas cylinder surface features at time of manufacture 23 12 Certification 24 13 Marking .25 Annex A (normative) Corrosion tests .26 Annex B (normative) Test method to determine the sustained-load cracking resistance of aluminium alloy gas cylinders .36 Annex C (info
22、rmative) Typical type approval certificate .43 Annex D (informative) Acceptance certificate 44 Annex E (normative) Specific requirements for gas cylinders made of high-strength and/or low-elongation aluminium alloy 46 Annex F (informative) Description and evaluation of manufacturing surface imperfec
23、tions and conditions for rejection of seamless aluminium alloy gas cylinders at time of product acceptance .52 Annex G (normative) Batch size 59 Annex H (normative) Specific provisions for acetylene cylinder shells .60 Bibliography 61 BS EN ISO 7866:2012ISO 7866:2012(E) ISO 2012 All rights reserved
24、vForeword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a
25、technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matter
26、s of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulat
27、ed to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible
28、 for identifying any or all such patent rights. ISO 7866 was prepared by Technical Committee ISO/TC 58, Gas cylinders, Subcommittee SC 3, and by Technical Committee CEN/TC 23, Transportable gas cylinders in collaboration. This second edition cancels and replaces the first edition (ISO 7866:1999), wh
29、ich has been technically revised. The following significant technical changes have been carried out: a new subclause (11.7) has been added to address unacceptable manufacturing defects and unacceptable surface features at the time of manufacture and changes have been made to other subclauses to comp
30、liment the new subclause; terms and definitions and the symbols have been revised; terminology changes included: “stress” changed to “strength”; various editorial errors were corrected; equipment calibration requirements were added; defining “defect“ as a feature caused by the manufacturing/manufact
31、urer; and defining “imperfection“ as damage or feature not caused by manufacturing/manufacturer. BS EN ISO 7866:2012ISO 7866:2012(E) vi ISO 2012 All rights reservedIntroduction The purpose of this International Standard is to provide a specification for the design, manufacture, inspection and testin
32、g of a seamless aluminium alloy gas cylinder for worldwide usage. The objective is to balance design and economic efficiency against international acceptance and universal utility. This International Standard aims to eliminate the concern about climate, duplicate inspections and restrictions current
33、ly existing because of lack of definitive International Standards. This International Standard should not be construed as reflecting on the suitability of the practice of any nation or region. Following publication, this International Standard will be submitted for reference in the UN Recommendation
34、s on the Transport of Dangerous Goods Model Regulations. BS EN ISO 7866:2012INTERNATIONAL STANDARD ISO 7866:2012(E) ISO 2012 All rights reserved 1Gas cylinders Refillable seamless aluminium alloy gas cylinders Design, construction and testing 1 Scope This International Standard specifies minimum req
35、uirements for the material, design, construction and workmanship, manufacturing processes and tests at time of manufacture of refillable seamless aluminium alloy gas cylinders of water capacities up to and including 150 litres for compressed, liquefied and dissolved gases for worldwide use (normally
36、 up to 65 C). 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. ISO 6506-1,
37、Metallic materials Brinell hardness test Part 1: Test method ISO 6508-1, Metallic materials Rockwell hardness test Part 1: Test method (scales A, B, C, D, E, F, G, H, K, N, T) ISO 6892-1, Metallic materials Tensile testing Part 1: Method of test at room temperature ISO 7438, Metallic materials Bend
38、test ISO 7539-6:2011, Corrosion of metals and alloys Stress corrosion testing Part 6: Preparation and use of pre-cracked specimens for tests under constant load or constant displacement ISO 10461, Gas cylinders Seamless aluminium-alloy gas cylinders Periodic inspection and testing ISO 11117, Gas cyl
39、inders Valve protection caps and valve guards Design, construction and tests ISO 13341, Gas cylinders Fitting of valves to gas cylinders ISO 13769, Gas cylinders Stamp marking 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 artificial ageing
40、heat treatment process in which the solute phase is precipitated to give an increased yield strength and tensile strength 3.2 barlitres product of the test pressure (in bars) and the water capacity (in litres) BS EN ISO 7866:2012ISO 7866:2012(E) 2 ISO 2012 All rights reserved3.3 batch quantity of ga
41、s cylinders, plus gas cylinders for destructive testing, of the same nominal diameter, wall thickness, length and design, made successively from the same cast of aluminium alloy and subjected to the same heat treatment on the same equipment for the same duration of time NOTE See Table G.1 for batch
42、size requirements. 3.4 design stress factor (variable) F ratio of equivalent wall stress at test pressure, ph, to the guaranteed minimum yield strength, Reg3.5 IAA registration record of international alloy designations and chemical composition limits for wrought aluminium and wrought aluminium allo
43、ys as published by the Aluminum Association1)NOTE Such aluminium alloys are designated by the prefix “AA”. 3.6 mass of a gas cylinder combined mass of the gas cylinder and all permanently attached parts (e.g. foot ring, neck ring), but without the valve NOTE Mass is expressed in kilograms. 3.7 quenc
44、hing controlled rapid cooling in a suitable medium to retain the solute phase in solid solution 3.8 solution heat treatment thermal treatment which consists of heating products to a suitable temperature and holding them at that temperature long enough to allow constituents to enter into solid soluti
45、on 3.9 stabilizing heat treatment non-ageing heat treatment applied to 5 000-series aluminium alloys in order to minimize changes in mechanical properties and structure under service conditions 3.10 yield strength value corresponding to the 0,2 % proof strength (0,2% non-proportional elongation), Rp
46、0,2, for aluminium alloys 4 Symbols a calculated minimum wall thickness, in millimetres, of the cylindrical shell (see Figure 1) a guaranteed minimum wall thickness, in millimetres, of the cylindrical shell A percentage elongation after fracture b guaranteed minimum thickness, in millimetres, at the
47、 centre of a convex base (see Figure 1) 1) Aluminum Association Inc., 900, 19th Street N.W., Washington D.C., 20006-2168, USA. BS EN ISO 7866:2012ISO 7866:2012(E) ISO 2012 All rights reserved 3d positive circular development of fracture d negative circular development of fracture D nominal outside d
48、iameter, in millimetres, of the cylinder (see Figure 1 and Figure 2) D1nominal outside diameter, in millimeters, of the cylinder neck (see Figure 2)”. Dfdiameter, in millimetres, of the bend test former (see Figure 5) E modulus of elasticity F design stress factor (variable) (see 3.4) H outside heig
49、ht, in millimetres, of the domed part (convex head or base end) (see Figure 1) L length of short branch of fracture, in millimeters L length of long branch of fracture, in millimeters Looriginal gauge length, in millimetres, as defined in ISO 6892-1 (see Figure 4) n ratio of the diameter of the bend test former to the actual thickness of the test specimen, t pbactual burst pressure, in bars above atmospheric pressure pffailure pressure, in bars phhydraulic test pressure, in bars ab
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