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1、BRITISH STANDARD BS 5430-6:1994 Periodic inspection, testing and maintenance of transportable gas containers (excluding dissolved acetylene containers) Part 6: Specification for seamless steel and aluminium alloy containers having a water capacity of less than 0.5 litre Licensed Copy: sheffieldun sh
2、effieldun, na, Fri Dec 01 14:35:23 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 5430-6:1994 This British Standard, having been prepared under the direction of the Pressure Vessel Standards Policy Committee, was published under the authority of the Standards Board and comes into effect on 15 July 19
3、94 BSI 02-1999 The following BSI references relate to the work on this standard: Committee reference PVE/3 Draft for comment 88/77375 DC ISBN 0 580 22830 4 Committees responsible for this British Standard The preparation of this British Standard was entrusted by the Pressure Vessel Standards Policy
4、Committee (PVE/-) to Technical Committee PVE/3, upon which the following bodies were represented: Aluminium Extruders Association Aluminium Federation Associated Offices Technical Committee British Compressed Gases Association British Fire Consortium British Fire Protection Systems Association Ltd.
5、British Gas plc British Soft Drinks Association Ltd. Department of Trade and Industry Mechanical Engineering and Manufacturing Technology Division (Mmt) Department of Trade and Industry (National Engineering Laboratory) Department of Transport (Marine Directorate) Engineering Equipment and Materials
6、 Users Associaition Fire Extinguishing Trades Associaton Health and Safety Executive Home Office Industrial Safety (Protective Equipment) Manufacturers Association Institute of Refrigeration Institution of Chemical Engineers LP Gas Association Ministry of Defence Coopted members Amendments issued si
7、nce publication Amd. No.DateComments Licensed Copy: sheffieldun sheffieldun, na, Fri Dec 01 14:35:23 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 5430-6:1994 BSI 02-1999i Contents Page Committees responsibleInside front cover Forewordii 1Scope1 2References1 3Definitions1 4General requirements1 5Pro
8、cedure for prefill inspection and periodic inspection3 6Marking6 7Painting and internal coating6 8Containers rejected for further service6 Annex A (normative) Procedure to be adopted when a container valve is thought to be obstructed8 Annex B (normative) Rejection limits8 Annex C (informative) Hydra
9、ulic proof pressure test8 Figure A.1 Device for detecting obstructed gas container valves Figure C.1 Example of hydraulic proof pressure test equipment10 Table 1 Intervals between periodic inspection2 Table 2 Recommended test date discs for containers3 Table B.1 Rejection limits relating to physical
10、 and material defects in the container shell8 Table B.2 Rejection limits for gas containers at time of inspection8 Table B.3 Rejection limits for gas containers resulting from external corrosion9 List of referencesInside back cover Licensed Copy: sheffieldun sheffieldun, na, Fri Dec 01 14:35:23 GMT+
11、00:00 2006, Uncontrolled Copy, (c) BSI BS 5430-6:1994 ii BSI 02-1999 Foreword This Part of BS 5430 has been prepared under the direction of the Pressure Vessel Standards Policy Committee. It is one of a series relating to the periodic inspection, testing and maintenance of transportable gas containe
12、rs. This Part covers the periodic inspection, testing and maintenance of transportable seamless steel and aluminium alloy gas containers having a water capacity of less than 0.5 l. Other Parts of BS 5430 include: Part 1: Specification for seamless steel containers of water capacity 0.5 litres and ab
13、ove; Part 2: Specification for welded steel containers of water capacity 1 L up to 150 L; Part 3: Specification for seamless aluminium alloy containers of water capacity 0.5 L and above. It has been assumed in the drafting of this standard that it will be used and applied by those who are appropriat
14、ely qualified and experienced. Attention is drawn to the need to ensure compliance with all regulations as they affect the gas container including Food Safety Act 1990 (as amended) The Highly Flammable Liquids and Liquefied Petroleum Gases Regulations 1972 (S1.1972 No.917, as modified by S1 1978 No.
15、 209). The Pressure Systems and Transportable Gas Container Regulations 1989. 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 con
16、fer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, pages 1 to 10, 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 indicat
17、ed in the amendment table on the inside front cover. Licensed Copy: sheffieldun sheffieldun, na, Fri Dec 01 14:35:23 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 5430-6:1994 BSI 02-19991 1 Scope This Part of BS 5430 specifies requirements for the prefill and periodic inspection, testing and mainten
18、ance of refillable transportable seamless steel and aluminium alloy gas containers of water capacity less than 0.5 l. It does not apply to dissolved acetylene containers, nor to small carbon dioxide cartridges used in fire extinguishers. A procedure for the inspection of the cylinders at the time of
19、 refilling is also included. This standard applies to gas containers manufactured to BS 5045-6 or other equivalent specifications or standard. NOTEThere are some gases which are not suitable to be filled into steel containers, and some not suitable to be filled into aluminium alloy containers. Where
20、 there is doubt about the compatibility of the gas with the container, advice should be sought from a competent person. 2 References 2.1 Normative references This Part of BS 5430 incorporates, by dated or undated reference, provisions from other publications. These normative references are made at t
21、he appropriate places in the text and the cited publications are listed on the inside back cover. For dated references, only the edition cited applies; any subsequent amendments to or revisions of the cited publication apply to this Part of BS 5430 only when incorporated in the reference by amendmen
22、t or revision. For undated references, the latest edition of the cited publication applies, together with any amendments. 2.2 Informative references This Part of BS 5430 refers to other publications that provide information or guidance. Editions of these publications current at the time of issue of
23、this standard are listed on the inside back cover, but reference should be made to the latest editions. 3 Definitions For the purposes of this Part of BS 5430 the following definitions apply. 3.1 liquefiable gas a gas that is liquefiable by pressure at 10 C but which is completely vaporized at 17.5
24、C at 1 013 mbar1) NOTECertain toxic substances that are liquid at 1 013 mbar pressure at 0 C but that are completely vaporized at or below 30 C at that pressure are treated as low pressure liquefiable gases and are included in Table 1. 3.2 high pressure liquefiable gas a gas that has a critical temp
25、erature between 10 C and 70 C inclusive 3.3 low pressure liquefiable gas a gas that has a critical temperature above 70 C 3.4 permanent gas a gas that has a critical temperature below 10 C 3.5 corrosion a chemical reaction on material that results in the removal of the surface of the material NOTECo
26、rrosion may exist in many forms, such as: a) chemical attack where the metal is dissolved by the reagents (such attack may be general over the complete surface, localized (causing pitting), or a combination of the two); b) rusting caused by the combined action of moisture and an oxidizing medium, e.
27、g. air. 3.6 inspection an examination by a competent person using appropriate equipment 3.7 competent person a competent person is one who, through training, practical experience and an understanding of the equipment, is able to verify that the requirements of this standard are met 3.8 testing stati
28、on suitably equipped premises, staffed by competent persons, to undertake the periodic inspecting and testing of gas containers, in accordance with this standard 3.9 independent inspecting authority an inspecting organization approved by the Health and Safety Executive in accordance with regulation
29、16 (2) of The Pressure Systems and Transportable Gas Container Regulations 1989, for the purpose of verification of the design of containers to British Standards specifications BS 5045-1, BS 5045-2, BS 5045-3 and BS 5045-6 4 General requirements 4.1 Containers shall not be refilled unless they have
30、been inspected and tested as necessary, in accordance with this standard. 1) 1 bar = 105 N/mm2 = 100 kPa. Licensed Copy: sheffieldun sheffieldun, na, Fri Dec 01 14:35:23 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 5430-6:1994 2 BSI 02-1999 Table 1 Intervals between periodic inspection If any aspec
31、t of this standard cannot be complied with, the container shall be rendered unsuitable for further service, in accordance with clause 8. NOTE 1The primary objective of periodic inspection/testing is to check that the condition of the container is satisfactory for a further period of use. NOTE 2It is
32、 the responsibility of the testing station to verify compliance with this standard. It is the responsibility of the filler to ensure that containers have been inspected and tested prior to filling. 4.2 The owner, user or filler of the gas containers shall not be relieved from the obligation to ensur
33、e at all times that his containers are not damaged or corroded and shall refer all those suspected of damage or corrosion for further inspection and testing before the prescribed interval has elapsed. 4.3 No gas container shall be refilled unless it has been subjected to prefill and periodic inspect
34、ion, in accordance with clause 5, as applicable at the periods specified in Table 1. The responsibility for ensuring that containers have been inspected and tested, prior to filling, rests with the filler. 4.4 The requirement for inspection and testing shall be satisfied if a container is inspected
35、and tested on its first receipt by a filler after a lapse of the specified period in accordance with Table 1. NOTEThere is no general requirement for the user to return a gas container before the contents have been used even though the test period may have lapsed. However, in the case of containers
36、used for emergency purposes where long periods may elapse before use e.g. fire extinguishers, resuscitation and self-contained breathing apparatus, it is the responsibility of the owner or user to empty the container and submit it for inspection and testing within the prescribed period. 4.5 Containe
37、rs due for inspection and testing shall be identified from the date of manufacture or from the date of the last periodic test, marked on the container or valve. The date shall indicate a month and a year, or a year followed by a quarter in accordance with clause 6, i.e. a container falls due for ins
38、pection and test on its first receipt by a filler after the expiry of the period in Table 1, taken from the start of the interval marked on the container or valve. Duty of gas containers (see note to the scope)Interval (in years) Permanent gases, e.g. oxygen, argon, nitrogen, hydrogen, air, helium,
39、xenon, krypton, neon 5 or 10 (see note 1) All gases used in self-contained underwater breathing dress apparatus.2 All gases used in self-contained breathing apparatus.5 Carbon monoxide, methane and other manufactured fuel gases3 or 5 (see note 1) Non-corrosive low pressure liquefiable gases, e.g. am
40、monia, butadiene, butane, dimethylether, ethylamine, ethyl chloride, ethylene oxide, refrigerant (halocarbon) gases, methylamine, dimethylamine, trimethylamine, propane, cyclopropane, propylene, vinyl chloride. 10 Corrosive low pressure liquefiable gases, e.g. boron trichloride, hydrogen cyanide, hy
41、drogen sulfide, nitrogen tetroxide, sulfur dioxide. 5 Corrosive high pressure liquefiable gases, e.g. hydrogen chloride.5 Non-corrosive high pressure liquefiable gases, e.g. ethane, ethylene, nitrous oxide, sulfur hexafluoride, chlorotrifluoromethane (R13), bromotrifluoromethane (R1381). 10 Carbon d
42、ioxide used for carbonation of drinks.10 or 20 (see note 2) Carbon dioxide (excluding the carbonation of drinks).10 NOTE 1The extended interval may only be used if the dewpoint of the gas is not higher than 46 C at 1 013 mbar. Application has to be made in writing to the independent inspection autho
43、rity. The relaxation will be granted only to industrial concerns that have written approval. NOTE 2The extended period may only be used under the following circumstances. a) The containers are under the control of one filler, or fillers controlled by a single organization. b) The filler or organizat
44、ion is capable of undertaking full inspection and test, and imposing documented procedures throughout all operations. c) These operations are subject to a 2 year audit by the independent inspection authority. d) The use of the extended interval is subject to the following at each filling: 1) an exte
45、rnal inspection as defined in 5.4; 2) a leak test involving the immersion of the fully charged container in a water bath, or method of equivalent sensitivity; 3) a check on each container to ensure freedom from moisture (see 5.3.2). Licensed Copy: sheffieldun sheffieldun, na, Fri Dec 01 14:35:23 GMT
46、+00:00 2006, Uncontrolled Copy, (c) BSI BS 5430-6:1994 BSI 02-19993 NOTE 1For example, if the container was tested in June 1981 and marked by year and quarter, it would, if subject to a ten year periodic inspection, fall due for retest at its first receipt by a filler after 31st March 1991. If the c
47、ontainer was manufactured and tested in 1981 and marked year only it would, if subject to a ten year periodic inspection fall due for retest at its first receipt by a filler after 31st December 1990. NOTE 2As an aid to recognition, coloured discs may be used, located between the valve and the neck o
48、f the gas container. Details of a suggested scheme are given in Table 2. Table 2 Recommended date discs for containers 5 Procedure for prefill and periodic inspection 5.1 Categorization Containers shall be sorted into the following categories: a) carbon dioxide beverage dispensers; b) lecture bottle
49、s; c) sub-aqua; d) other applications; e) containers suspected of having inadequate markings. These shall be dealt with in accordance with 5.4. 5.2 Segregation 5.2.1 Segregation categories A scrutiny of all markings, on each container, shall be carried out so that the containers may be segregated as follows: a) containers due for refill only; b) containers due for periodic inspection. 5.2.2 Containers due for refill only All containers due for refilling only, shall be subject to a prefill inspection as detailed in 5.3 (as applic
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