BS-5045-5-1986.pdf
BRITISH STANDARD BS 5045-5: 1986 Incorporating Amendment No. 1 Transportable gas containers Part 5: Specification for aluminium alloy containers above 0.5 litre up to 130 litres water capacity with welded seams UDC 621.772.43:66.076.5:621.642.2.02:669.715 Licensed Copy: sheffieldun sheffieldun, na, Fri Dec 01 14:31:59 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 5045-5:1986 This British Standard, having been prepared under the direction of the Pressure Vessel Standards Committee, was published under the authority of the Board of BSI and comes into effect on 31 July 1986 © BSI 06-1999 The following BSI references relate to the work on this standard: Committee reference PVE/3 Draft for comment 81/73542 DC ISBN 0 580 14483 6 Committees responsible for this British Standard The preparation of this British Standard was entrusted by the Pressure Vessel Standards Committee (PVE/-) to Technical Committee PVE/3, upon which the following bodies were represented: Aluminium Federation Associated Offices Technical Committee Association of Drum Manufacturers Association of Manufacturers of Domestic Electrical Appliances British Compressed Gases Association British Fire Protection Systems Association Ltd. British Railways Board British Sub-aqua Club Chief and Assistant Chief Fire Officers Association Department of Trade and Industry (Mechanical and Electrical Engineering Division) Department of Trade and Industry (National Engineering Laboratory) Department of Trade and Industry (National Physical Laboratory) Department of Transport (Marine Directorate) Engineering Equipment and Materials Users Association Fire Extinguishing Trades Association Health and Safety Executive Home Office Industrial Safety (Protective Equipment) Manufacturers Association Institute of Refrigeration Institution of Chemical Engineers Institution of Fire Engineers Liquefied Petroleum Gas Industry Technical Association (UK) Ministry of Defence Motor Industry Research Association National Association of Soft Drinks Manufacturers Society of Motor Manufacturers and Traders Limited Coopted members The following was also represented in the drafting of the standard, through sub-committees and panels: Coopted member Amendments issued since publication Amd. No.Date of issueComments 6321January 1991Indicated by a sideline in the margin Licensed Copy: sheffieldun sheffieldun, na, Fri Dec 01 14:31:59 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 5045-5:1986 © BSI 06-1999 i Contents Page Committees responsibleInside front cover Forewordiii Section 1. General 1Scope1 2Manufacture and testing of containers1 3Classification of gases1 4Information to be supplied by the purchaser and the manufacturer1 5Certificate of compliance2 Section 2. Materials 6General4 7Permissible materials for container4 Section 3. Design 8Service conditions for design6 9Classification of containers6 10Design of container shell7 11Openings and branch connections13 12Fittings13 Section 4. Manufacture and workmanship 13Approval of design and construction details15 14Tolerances15 15Welds15 16Heat treatment15 Section 5. Inspection and tests 17Inspection of components16 18Test requirements16 19Mechanical tests17 20Hydraulic volumetric expansion test18 21Hydraulic bursting test19 22Proof pressure test19 23Checking of water capacity19 24Tightness test19 25Design qualification tests of prototype containers19 26Radiographic examination of welds20 27Repair of welds20 28Results of mechanical and pressure tests20 29Final internal inspection21 Section 6. Marking of containers 30Information to be marked24 31Method of marking24 Appendix A Volumetric expansion testing of welded containers25 Appendix B Example of design procedure31 Appendix C Specimen certificate of compliance for welded aluminium alloy gas containers34 Appendix D Inspection and testing facilities36 Licensed Copy: sheffieldun sheffieldun, na, Fri Dec 01 14:31:59 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 5045-5:1986 ii © BSI 06-1999 Page Figure 1 Shape factor K10 Figure 2 Domed ends12 Figure 3 Location of test specimens in a container22 Figure 4 Water jacket volumetric expansion test (levelling burette)28 Figure 5 Water jacket volumetric expansion test (fixed burette)28 Figure 6 Non-water jacket volumetric expansion test29 Table 1 Classification of gases suitable for conveyance in welded aluminium alloy containers3 Table 2 Cast analysis5 Table 3 Mechanical properties5 Table 4 Reference temperatures for developed pressure for conveyance in the United Kingdom in uninsulated containers6 Table 5 Classification and construction criteria8 Table 6 Relationship between test pressure, pressure developed at the reference temperature and gas classification8 Table 7 Stress reduction factors for walls of cylindrical or spherical containers9 Table 8 Maximum permissible equivalent stress at test pressure for the cylindrical part of the shell11 Table 9 K factors for the compressibility of water30 Publications referred toInside back cover Licensed Copy: sheffieldun sheffieldun, na, Fri Dec 01 14:31:59 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 5045-5:1986 © BSI 06-1999iii Foreword This British Standard prepared under the direction of the Pressure Vessel Standards Committee, is one of the series based on the recommendations of the report, published 1969, of the Home Office Gas Cylinders and Containers Committee for materials, design, construction, testing, filling and maintenance of new containers intended for the conveyance by road of permanent, liquefiable and dissolved gases under pressure. The BS 5045 series is being prepared in a number of Parts to cover the various forms of manufacture. Those Parts either already published or in preparation are as follows: Part 1: Specification for seamless steel gas containers above 0.5 litre water capacity; Part 2: Steel containers up to 130 litres water capacity with welded seams; Part 3: Specification for seamless aluminium alloy containers above 0.5 litre water capacity and up to 300 bar charged pressure at 15 °C; Part 4: Specification for steel containers of over 450 litres water capacity with circumferential and longitudinal welded seams1); Part 5: Specification for aluminium alloy containers above 0.5 litre up to 130 litres water capacity with welded seams; Part 6: Specification for seamless containers of up to and including 0.5 litre water capacity. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pages i to iv, pages 1 to 36, an inside back cover and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover. 1) In preparation. Licensed Copy: sheffieldun sheffieldun, na, Fri Dec 01 14:31:59 GMT+00:00 2006, Uncontrolled Copy, (c) BSI iv blank Licensed Copy: sheffieldun sheffieldun, na, Fri Dec 01 14:31:59 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 5045-5:1986 © BSI 06-19991 Section 1. General 1 Scope This Part of BS 5045 specifies requirements for the materials, design, construction and testing of containers for the conveyance of gases under pressure; such containers are suitable also for storing gas under pressure. It applies to aluminium alloy containers of water capacity above 0.5 litre up to 130 litres having longitudinal and/or circumferential seams, made by mechanized TIG or MIG welding. It includes appendices giving examples of design calculations, a description of the methods for pressure testing of containers and a model form of test certificate. It does not cover the design and manufacture of portable fire extinguishers where the developed pressure of the contents does not exceed 25 bar2)at the appropriate reference temperature; these are specified in BS 5423. NOTEThe titles of the publications referred to in this standard are listed on the inside back cover. 2 Manufacture and testing of containers The manufacture, inspection and testing of containers shall be carried out to the satisfaction of an Independent Inspecting Authority. 3 Classification of gases 3.1 General For the purposes of the design and filling of the container, gases are classified as follows: a) Permanent gas. A gas that has a critical temperature below 10 °C. b) Liquefiable gas. A gas that is liquefiable by pressure at 10 °C but which is completely vapourized below 17.5 °C when at 1 013 mbar2). 1) High pressure liquefiable gas. A gas that has a critical temperature from 10 °C to 70 °C inclusive. 2) Low pressure Liquefiable gas. A gas that has a critical temperature above 70 °C. Any toxic substance that is liquid at 1 013 mbar pressure at 0 °C, but that boils at or below 30 °C at that pressure, shall be treated as a low pressure liquefiable gas. Gases that may be contained in aluminium alloy containers are classified in Table 1. 3.2 Gases that shall not be contained in aluminium alloy containers Subject to the exception stated, the following gases shall not be contained in aluminium alloy containers. Certain of these gases may however be contained in aluminium alloy containers in small quantities as components of gas mixtures. Approval for such use shall be sought from the Health and Safety Executive. acetylene boron trifluoride bromotrifluoroethylene carbonyl chloride chlorine chlorine trifluoride cyanogen chloride fluorine hydrogen bromide hydrogen chloride hydrogen fluoride methyl bromide methyl chloride nitrosyl chloride 3.3 Unlisted gases For conditions pertaining to the carriage in aluminium alloy containers of a gas not listed in Table 1 or 3.2, reference shall be made to the Health and Safety Executive. 4 Information to be supplied by the purchaser and the manufacturer 4.1 Information to be supplied by the purchaser It is essential that the purchaser supplies the manufacturer with the following information as appropriate: a) name or classification of gas(es); b) class of construction (e.g. BS 5045-5, class IA); c) volumetric capacity (minimum for liquefiable gases); d) for permanent gases, the charged pressure at 15 °C; e) for liquefiable gases, the mass of gas or filling ratio at the prescribed reference temperature or the required developed pressure in service; f) materials of construction; g) preferred dimensions; h) type of base; 2) 1 bar = 105 N/m2= 105 Pa. Licensed Copy: sheffieldun sheffieldun, na, Fri Dec 01 14:31:59 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 5045-5:1986 2 © BSI 06-1999 i) internal and/or external neck screwing dimensions; j) fittings required; k) external/internal finish required; l) any special or adverse conditions under which the container will be required to operate, and any corrosion allowance required; m) whether any addition is required to the requirements of this standard; n) the name of the Independent Inspecting Authority. 4.2 Information to be supplied by the manufacturer The manufacturer shall supply the purchaser and the Independent Inspecting Authority with the following information: a) fully dimensioned sectional drawing of the container including: 1) name or classification of gas(es); 2) volumetric capacity (minimum for liquefiable gases); 3) charged pressure at 15 °C for permanent gas(es) or mass of liquefiable gas(es); 4) materials of construction; 5) test pressure; 6) minimum and maximum masses of container; 7) statement that the container will be constructed to the requirements of this standard; 8) design approval reference (see clause 13); 9) amount of corrosion allowance (if any); 10) large scale dimensional details of the weld preparation for all seams and details of these joints; b) fittings to be supplied; c) marking arrangement drawing; d) certificate of compliance for materials and container. 5 Certificate of compliance 5.1 The Independent Inspecting Authority, to be approved by the Health and Safety Executive, shall certify that the manufacture of the container was carried out in accordance with the requirements of this standard. NOTEA suitable form of certificate is shown in Appendix C. 5.2 The Independent Inspecting Authority shall indicate on the certificate that inspection and testing has been carried out in accordance with the requirements of this standard and, when applicable, with the procedures for testing for limited production (see 18.4). 5.3 When a batch consists of containers of various lengths (see 18.4.1), certificates shall be issued for each size of container within the batch. Licensed Copy: sheffieldun sheffieldun, na, Fri Dec 01 14:31:59 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 5045-5:1986 © BSI 06-19993 Table 1 Classification of gases suitable for conveyance in welded aluminium alloy containers Permanent gases (Tc 70 °C) AirBromotrifluoromethane (R13B1)Allenea ArgonCarbon dioxideAmmoniab Carbon monoxideabChlorotrifluoromethane (R13)Arsineab Carbon tetrafluoride (R14)DiboranebcBromochlorodifluoromethane (R12B1) Coal gasab1,1-Difluoroethylene (R1132a)aButadienea DeuteriumaEthaneaButanea HeliumEthylenea1 Butenea HydrogenaHexafluoroethane (R116)2 Butenea KryptonNitric oxideCarbonyl sulphideab Methane (natural gas)aNitrous oxide1-Chloro-1, 1-difluoroethanea (R142b) NeonPhosphinebChloropentafluoroethane (R115) NitrogenSilane2-Chloro-1, 1, 1-trifluoroethane (R133a) OxygenSulphur hexafluorideCyanogenab Town gas (excluding coal gas)abTrifluoromethane (R23)Cyclopropanea XenonDichlorodifluoromethane (R12) Dichlorofluoromethane (R21) 1,2-Dichlorotetrafluoroethane (R114) 1,1-Difluoroethanea (R152a) Dimethylaminead Dimethyl ethera 2,2 Dimethyl propanea Ethyl acetylenea Ethylaminead Hexafluoropropene Hydrogen cyanideab Hydrogen selenide Hydrogen sulphideab Isobutanea Isobutylenea Methyl acetyleneabd Methylaminea 3 Methyl-l-butenea Methyl mercaptanab Nitrogen dioxideb Nitrogen tetroxideb Nitrogen trioxideb Octafluorocyclobutane (RC318) Perfluoro-2-buteneb Perfluoro propane Propanea Propylenea Sulphur dioxideb Trimethylaminead Vinyl bromidebe Vinyl chlorideae Vinyl fluorideae Vinyl methyl ethera Gas mixtures: Azeotrope R500 (73.8 % R12 and 26.2 % R152a) Azeotrope R502 (48.8 % R22 and 51.2 % R115) NOTE 1Tc in the column headings is the critical temperature. NOTE 2Gas mixtures may contain small fractions of other gases, and/or liquid components. The filler should ascertain that these mixtures are compatible with aluminium alloys under all normal conditions of use. NOTE 3All gases contained in aluminium containers are to be free from reactive halogens. NOTE 4Those gases italicized may in accordance with 9.3 be contained in class IA containers. a For the purpose of transport, these gases are considered to be flammable. b These gases are poisonous and are the ones referred to in this standard as toxic gas
