1、| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | BRITISH STANDARD BS 5045-7:2000 NO COPYING
2、 WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW Transportable gas containers Part 7: Specification for seamless steel gas containers of water capacity 0.5 L up to 15 L for special portable applicationsThis British Standard, having been prepared under the direction of the Engineering Sec
3、tor Committee, was published under the authority of the Standards Committee and comes into effect on 15 May 2000 BSI 05-2000 The following BSI references relate to the work on this standard: Committee reference PVE/3 ISBN 0 580 33164 4 BS 5045-7:2000 Amendments issued since publication Amd. No. Date
4、 Comments Committees responsible for this British Standard The preparation of this British Standard was entrusted to the Pressure Vessels Standards Committee PVE/3/-, to Technical Committee PVE/3, upon which the following bodies were represented: Associated Offices Technical Committee Association of
5、 Shell Boilermakers British Chemical Engineering Contractors Association British Compressed Gases Association British Gas Corporation British Insurance (Atomic Energy) Committee British Steel Industry Chemical Industries Association Department of Trade (Marine Division) Engineering Equipment Users A
6、ssociation Health and Safety Executive Institution of Chemical Engineers Institution of Gas Engineers Institution of Mechanical Engineers Lloyds Register of Shipping Oil Companies Materials Association Process Plant Association United Kingdom Atomic Energy Authority University of Manchester (Institu
7、te of Science and Technology) Water-tube Boilermakers Association Welding Institute The following bodies were also represented in the drafting of this standard, through subcommittee PVE/3: Aluminium Federation Association of Drum Manufacturers British Railways Board British Sub-aqua Club Chief and A
8、ssistant Chief Fire Officers Association Department of Industry (National Engineering Laboratory) Department of Industry (National Physical Laboratory) Fire Extinguishing Trades Association Home Office Industrial Safety (Protective Equipment) Manufacturers Association Institute of Refrigeration Inst
9、itution of Fire Engineers Liquefied Petroleum Gas Industry Technical Association (UK) Ministry of Defence National Association of Soft Drinks Manufacturers Society of Motor Manufacturers and Traders Limited Coopted membersBS 5045-7:2000 BSI 05-2000 i Contents Page Committees responsible Inside front
10、 cover Foreword iii 1 Scope 1 2 Normative references 1 3 Manufacture and testing of containers 1 4 Classification of gases 1 5 Information to be supplied by the purchaser and the manufacture 1 6 Certificate of compliance 3 7 Permissible materials General 3 8 Permissible materials Chemical compositio
11、n 3 9 Permissible materials Steelmakers certificate 3 10 Permissible materials Identification of steel 3 11 Design Service conditions for design 6 12 Design formulae 7 13 Design Fittings 9 14 Manufacture and workmanship Approval of design and construction details 9 15 Manufacture and workmanship Per
12、missible processes 9 16 Manufacture and workmanship Heat treatment 10 17 Manufacture and workmanship Tolerances 10 18 Inspection and tests General 10 19 Inspection and tests Hardness tests 10 20 Inspection and tests Mechanical tests 12 21 Inspection and tests Examination for thickness, surface imper
13、fections and neck folds 12 22 Inspection and tests Hydraulic tests 13 23 Inspection and tests Re-heat treatment 14 24 Inspection and tests Tightness test 14 25 Inspection and tests Testing of prototype containers 15 26 Inspection and tests Checking of water capacity 15 27 Inspection and tests Result
14、s of tests 16 28 Inspection and tests Marking of containers 16 Annex A (informative) Volumetric expansion testing of seamless containers 17 Annex B (normative) Ultrasonic defect detection and thickness measurement 22 Annex C (informative) Examples of design calculations for cylindrical walls of seam
15、less containers 23 Annex D (informative) Specimen certificates 26 Bibliography 29 Figure 1 Hardness numbers related to tensile strengths 11 Figure 2 Cylinder neck folds before and after machining 13 Figure A.1 Water jacket volumetric expansion test (levelling burette) 20 Figure A.2 Water jacket volu
16、metric expansion test (fixed burette) 21 Figure A.3 Non-water jacket volumetric expansion test 21 Figure C.1 Diagram of deriving minimum values of test pressure P 1 25BS 5045-7:2000 ii BSI 05-2000 Page Table 1 Classification of gases 2 Table 2 Steelmaking process and chemical composition of permissi
17、ble materials 4 Table 3 Heat treatment and mechanical properties of steel in finished containers 5 Table 4 Permissible deviation on product analysis from specified range of carbon and carbon manganese steels 6 Table 5 Permissible deviation on product analysis from specified range for alloy steels 6
18、Table 6 Reference temperatures for developed pressure for conveyance in the UK in uninsulated containers 7 Table 7 Formulae for deriving minimum values of test pressure P 1 8 Table 8 Design stresses for permissible steels 8 Table A.1 K factors for the compressibility of water 19BS 5045-7:2000 BSI 05
19、-2000 iii Foreword This British Standard has been prepared under the direction of the Pressure Vessel Standards Committee. Together with BS EN 1964-1:2000 it supersedes BS 5045-1:1982 which is withdrawn. When first published, BS 5045-1:1982 was one of a series which dealt with materials, design, con
20、struction, testing, filling and maintenance of containers intended for the conveyance by road of permanent, liquefiable and dissolved gases under pressure. The requirements for seamless steel containers for general applications in BS 5045-1:1982 were superseded by the publication of BS EN 1964-1:200
21、0. However, requirements for small portable containers for special applications remain current. This new edition therefore renumbers BS 5045-1:1982 as BS 5045-7:2000 and modifies its scope to restrict its applicability to these special application containers. It does not, however, constitute a full
22、revision of the standard. 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 page
23、s This document comprises a front cover, an inside front cover, pages i to iv, pages 1 to 29 and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued.iv blank BSI 05-2000 1 BS 5045-7:2000 1) 1 mbar = 10 2 N/m 2 = 0.1 kPa. 1 Scope This part of
24、BS 5045 specifies the requirements for the materials, design, construction and testing of seamless steel containers of water capacity greater than 0.5 litre up to 15 litres for the conveyance and storage of gases under pressure used in the following portable applications: for use in aircraft; for br
25、eathing apparatus; for underwater breathing dress apparatus; for resuscitation apparatus; for fire extinguishers; for life raft inflation apparatus. It includes appendices giving examples of design calculations, a description of the methods for pressure testing of containers, a description of the me
26、thods for ultrasonic examination of containers, model forms of design and acceptance certificates. 2 Normative references The following normative documents contain provisions which, through reference in this text constitute provisions of this British Standard. For dated references, subsequent amendm
27、ents to, or revisions of, any of these publications do not apply. For undated references, the latest edition of the publication referred to applies. BS 341-1, Transportable gas container valves Part 1: Valves with taper stems (excluding valves used for breathing and medical purposes). BS 341-2, Tran
28、sportable gas container valves Part 2: Valves with taper stems for use with breathing apparatus. BS 2915, Specification for bursting discs and bursting disc devices. BS 3894-1, Method for converting elongation values for steel Part 1: Carbon and low alloy steels. BS 4500-1, ISO limits and fits Part
29、1: General tolerances and deviations. BS 5355, Specification for filling ratios and developed pressures for liquifiable and permanent gases. BS 6200-2-2.1:1993, Sampling and analysis of iron, steel and other ferrous metals Part 2: Sampling and sample preparation Section 2.1: Methods for iron and ste
30、el. BS 10109-1:1996, Metallic materials. Hardness test Part 1: Rockwell test (scales A, B, C, D, E, F, G, H, K,) and Rockwell superficial test (scales 15 N, 30 N, 45 N, 15 T, 30 T and 45 T). BS EN 837-1:1998, Pressure gauges Part 1: Bourdon tube pressure gauges Dimensions, metrology, requirements an
31、d testing. BS EN 850:1997, Transportable gas cylinders Pin-index, yoke-type valve outlet connections for medical use. BS EN 10002-1:1990, Tensile testing of metallic materials Part 1: Method of test at ambient temperature. BS EN 10002-3:1995, Tensile testing of metallic materials Part 3: Calibration
32、 of force proving instruments used for the verification of uniaxial testing machines. BS EN 10003-1:1995, Metallic materials Brinell hardness test Part 1: Test method. 3 Manufacture and testing of containers The manufacture, inspection and testing of containers conforming to the requirements of this
33、 British Standard shall be carried out to the satisfaction of an Independent Inspecting Authority to be approved by the Health and Safety Executive. 4 Classification of gases For the purposes of the design and filling of the container, gases are classified as follows. a) Permanent gases. Those gases
34、 that have a critical temperature below2108C; b) Liquefiable gases. Those gases that are liquefiable by pressure at2108C and that are completely vaporized at 17.58C and 1 013 mbar 1) . High pressure liquefiable gases are those having a critical temperature between2108C and 708C. Low pressure liquefi
35、able gases are those having a critical temperature above 708C. c) Dissolved gas. A gas that is dissolved under pressure in a solvent contained in a porous substance at ambient temperature and that is released from the solvent without application of heat. This classification is illustrated in Table 1
36、. 5 Information to be supplied by the purchaser and the manufacturer 5.1 Information to be supplied by the purchaser The purchaser shall inform the manufacturer of the following, as appropriate: a) name or classification of gas(es); b) service application; c) volumetric capacity (for liquefiable gas
37、es this shall be the minimum); d) for permanent gases, the filling pressure at 158C; e) for liquefiable gases, the mass of gas or filling ratio at the prescribed reference temperature or the required developed pressure in service;2 BSI 05-2000 BS 5045-7:2000 f) material of construction; g) preferred
38、 dimensions; h) shape of base; 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 (see note 2 of 12.3); m) a
39、ny requirements in excess of those specified in this standard; n) the name of the Independent Inspecting Authority. Table 1 Classification of gases Permanent gases Liquefiable gases Dissolved gases High pressure Low pressure (T c 7 08 C) Air Carbon dioxide Argon Nitrous oxide Helium Nitrogen Oxygen
40、NOTE T c is the critical temperature. 5.2 Information to be supplied by the manufacturer The manufacturer shall supply the purchaser and the Independent Inspecting Authority with the following: a) fully dimensioned sectional drawing of the container including: 1) name or classification of gas(es); 2
41、) volumetric capacity (for liquefiable gases this shall be the minimum); 3) filling pressure at 158C for permanent gas(es), or mass of liquefiable gas(es); 4) material of construction; 5) test pressure; 6) minimum and maximum masses of container; 7) statement that the container will conform to the r
42、equirements of this standard; 8) design approval (see clause 14); 9) corrosion allowance (if any); b) method of manufacture; c) fittings to be supplied; d) drawing showing layout of stamped marking (see clause 28); e) certificates of test for materials and container (see annex D). BSI 05-2000 3 BS 5
43、045-7:2000 6 Certificate of compliance The manufacturer shall certify that the manufacture, inspection and testing of the container were carried out in compliance with the requirements of this standard. The Independent Inspecting Authority shall certify acceptance of the above certification. NOTE A
44、suitable form of certificate is shown in annex D. 7 Permissible materials General Containers shall be made only from materials whose compositions are given in Table 2; the mechanical properties of the finished container shall be as specified in Table 3. 8 Permissible materials Chemical composition 8
45、.1 The ladle analyses shall conform to the appropriate requirements of Table 2. In the event of one melt being divided between more than one ladle, samples shall be analyzed from each ladle and separate analyses provided for each ladle. Each of these ladles shall subsequently be regarded as a specif
46、ic cast and identified accordingly. 8.2 Variation between the product analysis and the ladle analysis, which occurs because of heterogeneity arising during the casting and solidification of the ingot, shall not exceed the permitted deviations given in Tables 4 and 5. NOTE 1 Product analysis is any a
47、nalysis of the steel subsequent to the ladle analysis. The deviations are permitted in the individual elements either above or below the specified range but shall not be applied both above and below the specified range for any one element from any one ladle of steel. NOTE 2 When maxima only are spec
48、ified, the deviations are positive only. 8.3 Any ingot, bar or container that on chemical analysis is outside the limits of permissible deviation from the specified composition range for a specified element shall be deemed not to conform to the requirements of this standard. 8.4 In the event of a si
49、ngle sample falling outside the permitted deviations on the product analysis, further samples shall be selected for check analysis from the remainder of the consignment as follows: at least two samples from the same ladle for delivered masses up to 5 t; at least five samples from the same ladle for delivered masses up to 20 t; and at least eight samples from the same ladle for delivered masses over 20 t. These samples shall fall within the
