1、INTERNATIONAL STANDARD ISO 10464 First edition 2004-08-15 Reference number ISO 10464:2004(E) ISO 2004 Gas cylinders Refillable welded steel cylinders for liquefied petroleum gas (LPG) Periodic inspection and testing Bouteilles gaz Bouteilles rechargeables soudes en acier pour gaz de ptrole liqufi (G
2、PL) Contrles et essais priodiquesISO 10464:2004(E) ii ISO 2004 All rights reserved PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adobes licensing policy, this file may be printed or viewed but shall not be edited unless the typefaces which are embedded are licensed
3、to and installed on the computer performing the editing. In downloading this file, parties accept therein the responsibility of not infringing Adobes licensing policy. The ISO Central Secretariat accepts no liability in this area. Adobe is a trademark of Adobe Systems Incorporated. Details of the so
4、ftware products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation parameters were optimized for printing. Every care has been taken to ensure that the file is suitable for use by ISO member bodies. In the unlikely event that a problem relating to it
5、 is found, please inform the Central Secretariat at the address given below. ISO 2004 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permis
6、sion in writing from either ISO at the address below or ISOs member body in the country of the requester. ISO copyright office Case postale 56 CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail copyrightiso.org Web www.iso.org Published in SwitzerlandISO 10464:2004(E) ISO 2004 All
7、 rights reserved iii Contents Page 1 Scope 1 2 Normative references 1 3 Terms and definitions 2 4 Intervals between periodic inspections . 2 5 Procedures for periodic inspection . 2 5.1 General . 2 5.2 Test procedures . 3 5.3 External visual inspection 3 5.4 Additional test procedures . 6 6 Inspecti
8、on of cylinder threads 9 6.1 General . 9 6.2 Internal threads . 9 6.3 External threads 9 6.4 Damaged threads 9 7 Final operations . 9 7.1 Drying . 9 7.2 Purging . 10 7.3 Tare mass . 10 7.4 Valving 10 7.5 Marking . 10 7.6 Reference to next periodic inspection date 10 7.7 Identification of contents 10
9、 8 Rendering cylinders unserviceable . 10 9 Records . 11 Annex A (normative) Requirements for 15-year periodic inspection interval 12 Annex B (informative) System of protection against external corrosion 13 Annex C (informative) Procedure that may be adopted when it is suspected that a cylinder valv
10、e is obstructed/blocked 14 Bibliography . 15ISO 10464:2004(E) iv ISO 2004 All rights reserved Foreword 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 carrie
11、d out through ISO technical committees. Each member body interested in a subject for which a 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. IS
12、O collaborates closely with the International Electrotechnical Commission (IEC) on all matters 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 Internatio
13、nal Standards. Draft International Standards adopted by the technical committees are circulated 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 ele
14、ments of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO 10464 was prepared by Technical Committee ISO/TC 58, Gas cylinders, Subcommittee SC 4, Operational requirements for gas cylinders.ISO 10464:2004(E) ISO 200
15、4 All rights reserved v Introduction The primary objective of the periodic inspection of transportable refillable welded steel liquefied petroleum gas (LPG) cylinders is that, at the completion of the test, the cylinders can be reintroduced into service for a further period of time. The original per
16、iodic inspection and test procedures for transportable refillable welded steel LPG cylinders were based on those for gas cylinders or other pressure vessels, including those used for high-pressure industrial gases. These early methods relied on a periodic hydraulic proof pressure test being carried
17、out at intervals as frequently as two years (pre-1940). With increasing experience and confidence so gained, together with improved cylinder manufacturing quality, it has been possible to allow the extension of the intervals between periodic tests to 15 years. Periodic inspection is normally carried
18、 out at a test station operating under the supervision of a competent body. This International Standard has been prepared to reflect the current state of the art for the periodic inspection of LPG cylinders and is based on the operating experience of millions of cylinders in service over many years
19、vi INTERNATIONAL STANDARD ISO 10464:2004(E) ISO 2004 All rights reserved 1 Gas cylinders Refillable welded steel cylinders for liquefied petroleum gas (LPG) Periodic inspection and testing WARNING This International Standard calls for the use of substances and procedures that can be injurious to hea
20、lth if adequate precautions are not taken. It refers only to technical suitability and does not absolve the user from legal obligations relating to health and safety at any stage. It has been assumed in the drafting of this International Standard that the execution of its provisions is entrusted to
21、appropriately qualified and experienced people. 1S c o p e This International Standard specifies the intervals and inspection and testing procedures for the periodic inspection of refillable welded steel dedicated LPG cylinders of water capacity from up to and including . It applies to cylinders pro
22、tected by a system to prevent external corrosion and designed and manufactured in accordance with ISO 4706, ISO 22991 or an equivalent design and construction standard. This International Standard may also apply to other refillable welded steel cylinder designs for LPG with the approval of the natio
23、nal authority. Cylinders for the on-board storage of LPG as a fuel for vehicles are excluded from this standard, except cylinders used for fork-lift truck applications. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated referen
24、ces, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 4706, Refillable welded steel gas cylinders ISO 8501-1:1988, Preparation of steel substrates before application of paints and related products Visual ass
25、essment of surface cleanliness Part 1: Rust grades and preparation grades of uncoated steel substrates and of steel substrates after overall removal of previous coatings ISO 8504-2, Preparation of steel substrates before application of paints and related products Surface preparation methods Part 2:
26、Abrasive blast-cleaning ISO 9162, Petroleum products Fuels (class F) Liquefied petroleum gases Specifications ISO 10691, Gas cylinders Refillable welded steel cylinders for liquified petroleum gas (LPG) Procedures for checking before, during and after filling ISO 14245, Gas cylinders Specifications
27、and testing of LPG cylinder valves Self-closing ISO 15995, Gas cylinders Specifications and testing of LPG cylinder valves Manually operated ISO 22991, Gas cylinders Transportable refillable welded steel cylinders for liquefied petroleum gas (LPG) Design and construction EN 837-1, Pressure gauges Pa
28、rt 1: Bourdon tube pressure gauges Dimensions, metrology, requirements and testing 0,5 l 150 lISO 10464:2004(E) 2 ISO 2004 All rights reserved EN 837-3, Pressure gauges Part 3: Diaphragm and capsule pressure gauges Dimensions, metrology, requirements and testing 3 Terms and definitions For the purpo
29、ses of this document, the following terms and definitions apply. 3.1 competent body person or corporate body, defined by the national or relevant authority, which by combination of appropriate qualification, training, experience and resources is able to make objective judgments on a subject 3.2 comp
30、etent person person who by a combination of training, experience and supervision is able to make objective judgments on a subject 3.3 liquefied petroleum gas LPG a mixture of predominantly butane or propane with traces of other hydrocarbon gases classified in accordance with UN number 1965, hydrocar
31、bon gas mixture, liquefied, or NOS or UN number 1075, petroleum gases, liquefied NOTE In some countries, UN number 1011 and UN number 1978 may also be used to designate LPG. 3.4 periodic inspection activities carried out at defined intervals including but not limited to examining, measuring, testing
32、 or gauging the characteristics of a cylinder and comparing these with specified requirements as defined in the cylinder design standard and marking to attest conformity with the standard 3.5 periodic inspection test station place where cylinders are tested and periodically inspected 3.6 tare mass s
33、um of the empty mass, the mass of the valve including a dip tube where fitted, and the mass of all other parts that are permanently attached to the cylinder when it is being filled, e.g. the fixed valve guard 4 Intervals between periodic inspections The determination of the interval between periodic
34、 inspections shall be dependent on the content of a written scheme that shall be approved by a competent body as complying with the conditions outlined in Annex A. The interval between periodic inspections shall be 15 years provided the conditions of Annex A are fully met. A shorter time interval no
35、t exceeding 10 years shall apply if any of the conditions specified in Annex A are not met. 5 Procedures for periodic inspection 5.1 General The determination of the periodic inspection procedures shall be dependent on the content of a written scheme approved by a competent body.ISO 10464:2004(E) IS
36、O 2004 All rights reserved 3 5.2 Test procedures In all cases, periodic inspection procedures shall consist of an external visual inspection as given in 5.3. Additionally, where required by national regulations, one of the following test procedures shall be performed: a) hydraulic proof pressure tes
37、t (see 5.4.2); b) internal visual inspection (see 5.4.3) provided that cylinders have an adequate wall thickness and the design burst pressure is known or the actual burst pressure is proven equal to or exceeding: 1) for cylinders designed for dedicated butane service, 2) for cylinders designed for
38、propane service; c) pneumatic proof test and leak test (see 5.4.4); d) pneumatic leak test for LPG cylinders of water capacity or less (see 5.4.5) where the actual burst pressure is equal to or exceeds: 1) for cylinders designed for dedicated butane service, 2) for cylinders designed for propane ser
39、vice; e) volumetric expansion test (see 5.4.6) where authorized by the national or other relevant authority. 5.3 External visual inspection 5.3.1 Preparation for external visual inspection (see also Annex B) Where the cylinder surface has loose coatings, corrosion products, tar, oil or other foreign
40、 matter, these shall be removed by steel wire brushing, shot blasting in accordance with ISO 8504-2, water jet abrasive cleaning, chemical cleaning or other suitable methods. Care shall be taken to avoid damaging the cylinder. Cylinders treated by a process that may remove cylinder material shall be
41、 checked by a suitable means, e.g. a thickness check. 5.3.2 Inspection procedure The entire surface of the cylinder shall be inspected by a competent person for: a) dents, cuts, gouges, bulges, cracks, laminations or punctures, applying the guidelines for rejection in Ta b l e 1 ; b) corrosion, givi
42、ng special attention to areas where water can be trapped, at the base of the cylinder, the junction between the body and the foot ring, the junction between the body and the valve guard or shroud, and in particular hidden corrosion (e.g. behind the data plate), applying the criteria for rejection gi
43、ven in Ta b l e 2 ; c) other defects (e.g. depressed bung or fire damage), applying the criteria for rejection given in Table 3; d) the integrity of all permanent attachments. Any cylinder rejected by the competent person shall be segregated for reconditioning, for further testing or to be rendered
44、unserviceable (see Clause 8). NOTE In some countries, to render unserviceable means to scrap. 35 bar 70 bar 6,5 l 35 bar 70 barISO 10464:2004(E) 4 ISO 2004 All rights reserved 5.3.3 Visible defects Rejection criteria for physical and material defects on the cylinder shell are contained in Tables 1,
45、2 and 3. Under exceptional conditions and with the approval of a competent person, the wall thickness may be less than the minimum design value, in which case the cylinder shall pass the pressure test specified in 5.4.2. Table 1 Physical defects in the cylinder wall Defect Description Rejection limi
46、t Bulge Visible swelling of the cylinder Rejection in all cases Dent A depression in the cylinder that has neither penetrated nor removed metal, and its width at any point is greater thanof the external cylinder diameter When the depth of the dent exceeds of its width at any point a Cut or gouge A s
47、harp impression where metal has been removed or redistributed Where the original calculated wall thickness is known: where depth of cut or gouge is such that the undamaged (remaining) wall is less than the minimum calculated wall thickness Where the original calculated wall thickness is not known: r
48、ejection in all cases Intersecting cut or gouge The point of intersection of two or more cuts or gouges Rejection in all cases Dent containing cut or gouge A depression in the cylinder within which there is a cut or gouge When the size of the dent or cut or gouge exceeds the dimensions for rejection
49、 as an individual defect Crack A split or rift in the cylinder shell Rejection in all cases Lamination Layering of the material within the cylinder wall appearing as a discontinuity, crack, lap or bulge at the surface Rejection in all cases a Consideration of appearance and location also plays a part in the evaluation of dents. 2% 25 %ISO 10464:2004(E) ISO 2004 All rights reserved 5 Table 2 Corrosion on the cylinder wall Defect Description Rejection limit Isolated co
