ISO 10691-2004 Gas cylinders - Refillable welded steel cylinders for liquified petroleum gas (LPG) - Procedures for checking before during and after filling《气瓶 .pdf

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1、INTERNATIONAL STANDARD ISO 10691 First edition 2004-08-15 Reference number ISO 10691:2004(E) ISO 2004 Gas cylinders Refillable welded steel cylinders for liquified petroleum gas (LPG) Procedures for checking before, during and after filling Bouteilles gaz Bouteilles rechargeables soudes en acier pou

2、r gaz de ptrole liqufi (GPL) Modes opratoires de contrle avant, pendant et aprs le remplissageISO 10691:2004(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

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5、r bodies. In the unlikely event that a problem relating to it 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 mec

6、hanical, including photocopying and microfilm, without permission 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.i

7、so.org Published in SwitzerlandISO 10691:2004(E) ISO 2004 All rights reserved iii Contents Page 1 Scope 1 2 Normative references 1 3 Terms and definitions 1 4 Segregation of cylinders prior to filling . 2 4.1 General . 2 4.2 Cylinders suitable for filling . 2 4.3 Cylinders to be periodically inspect

8、ed 3 4.4 Cylinders requiring further assessment . 3 5 Reassessment of cylinders . 3 6 Filling 5 6.1 Safe filling quantity . 5 6.2 Safe filling mixture and composition 5 6.3 Accuracy of weighing equipment 5 6.4 Filling methods 5 7 Post-filling checks . 6 7.1 Check of filled amount 6 7.2 Action necess

9、ary for overfilled cylinders . 6 7.3 Check for leakage 6 7.4 Check of valve caps or plugs . 6 Bibliography . 7ISO 10691:2004(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)

10、. The work of preparing International Standards is normally carried 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

11、-governmental, in liaison with ISO, also take part in the work. ISO 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

12、 2. The main task of technical committees is to prepare International 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

13、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 for identifying any or all such patent rights. ISO 10691 was prepared by Technical Committee ISO/TC 58, Gas cylinders, Subcommittee SC 4, Op

14、erational requirements for gas cylinders.INTERNATIONAL STANDARD ISO 10691:2004(E) ISO 2004 All rights reserved 1 Gas cylinders Refillable welded steel cylinders for liquified petroleum gas (LPG) Procedures for checking before, during and after filling WARNING This International Standard calls for th

15、e use of substances and procedures that can be injurious to health if adequate precautions are not taken. It refers only to technical suitability and does not absolve the user from legal obligation relating to health and safety at any stage. It has been assumed in the drafting of this International

16、Standard that the execution of its provisions is entrusted to appropriately qualified and experienced people. Where judgments are called for it has been assumed that they will be made by competent persons who have been trained specifically for the task. 1S c o p e This International Standard specifi

17、es the procedures to be adopted when checking transportable refillable welded steel LPG cylinders before, during and after filling. It applies to transportable refillable welded steel LPG cylinders of water capacity from up to and including . It does not apply to cylinders permanently installed in v

18、ehicles, or to plant and filling equipment. 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 ame

19、ndments) applies. ISO 10464, Gas cylinders Refillable welded steel cylinders for liquefied petroleum gas (LPG) Periodic inspection and testing 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 competent authority any national body or authority

20、designated or otherwise recognized as such for any purpose in connection with this International Standard 3.2 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

21、objective judgments on a subject 3.3 competent person person who by a combination of training, experience and supervision is able to make objective judgments on a subject 0,5 l 150 lISO 10691:2004(E) 2 ISO 2004 All rights reserved 3.4 cylinder transportable, refillable container manufactured and mar

22、ked to a national or international standard and with a water capacity not exceeding 3.5 filling ratio ratio of the mass of gas introduced into a container to the mass of water at that would fill the same container fitted ready for use 3.6 filling by volume filling the cylinder with a fixed volume of

23、 LPG 3.7 filling to a level filling the cylinder to a fixed level using an ullage gauge 3.8 filling by mass filling the cylinder with LPG using a weighing machine 3.9 liquefied petroleum gas LPG mixture of predominantly butane or propane with traces of other hydrocarbon gases classified in accordanc

24、e with UN number 1965, hydrocarbon 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. 3.10 reconditioning major repairs to cylinders, including hot work, welding or de-denting (as p

25、ermitted by the competent authority), carried out by specialists away from the filling line 3.11 rejection putting out of service until final disposition is determined 3.12 periodic inspection test station place where cylinders are tested and periodically inspected 4 Segregation of cylinders prior t

26、o filling 4.1 General Cylinders shall be checked and segregated into the categories specified in 4.2 to 4.4. 4.2 Cylinders suitable for filling Cylinders shall be deemed suitable for filling if the following conditions apply: a) the design code/specification is identifiable; b) the tare mass or tare

27、 indication and water capacity are marked; c) the product mass and product identification (LPG) are indicated when required; 150 l 15 CISO 10691:2004(E) ISO 2004 All rights reserved 3 d) the cylinder is within the test date as determined from the marked manufacturers or periodic inspection dates; e)

28、 the symbol of the periodic inspection test station or inspection body is indicated; f) a visual inspection of visible areas shows that the cylinder (including foot ring) and valve are free of defects as described in 4.4; g) the cylinder is not leaking. 4.3 Cylinders to be periodically inspected Whe

29、n at least one of the following conditions apply, cylinders shall be set aside for periodic inspection in accordance with ISO 10464: a) the cylinder is beyond its test date; b) the cylinder cannot be confirmed to be within its test date; c) the cylinder has markings that are obscured and not easily

30、identified. 4.4 Cylinders requiring further assessment Where the initial segregation checks reveal any of the following defects, cylinders shall be subjected to further assessment, resulting in e.g. taring, reconditioning or rejection, in accordance with Clause 5: a) with cylinders intended to be fi

31、lled by mass, the tare mass or indication of tare mass is missing or illegible; b) the cylinder is defective or damaged, e.g. there is damage to shrouds, carrying handles or foot rings, or the cylinder is dented or fire-damaged; c) the cylinder is found to have visible corrosion or, with cylinders w

32、ith a welded foot ring, to exhibit corrosion at the weld; d) the cylinder, valve or pressure relief devices (if fitted) are leaking or are damaged. 5 Reassessment of cylinders Cylinders that have been set aside (see 4.4) shall be examined by a competent person who shall decide whether they are suita

33、ble for filling or shall be sent for reconditioning or rejected. Where, in the case of cylinders that are intended to be filled by mass, the tare mass or indication of tare mass is missing or illegible, the cylinders shall be reassessed and have the tare mass or indication of the tare mass applied i

34、n accordance with the relevant marking requirements. Leaking cylinders and cylinders with damaged or leaking valves shall be safely vented. Leaking or damaged valves shall be repaired or replaced. Cylinder weld leaks shall be repaired as authorized by the competent authority. For cylinders leaking t

35、hrough the body other than at a weld, the cause of the leak shall be determined; such cylinders shall then be rejected. Rejection criteria guidelines for physical and material defects on the cylinder shell are given in Tables 1, 2 and 3.ISO 10691:2004(E) 4 ISO 2004 All rights reserved Table 1 Physic

36、al defects in the cylinder wall Defect Description Rejection limit 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

37、 of the dent exceeds of its width at any point a Cut or gouge A sharp 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 thick

38、ness Where the original calculated wall thickness is not known: rejection 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

39、 of the dent or cut or gouge exceeds the dimensions for rejection 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

40、cases a Consideration of appearance and location also plays a part in the evaluation of dents. Table 2 Corrosion on the cylinder wall Defect Description Rejection limit Isolated corrosion pits Pitting of metal occurring in isolated areas at a concentration not greater than per of surface area When t

41、he depth of discrete pits exceeds (a greater depth can be accepted provided the depth of corrosion does not reduce the wall thickness below the minimum calculated wall thickness) Area corrosion Reduction in wall thickness over an area not exceeding of the cylinder surface, including the ends (top an

42、d bottom) When the depth of penetration of any pit exceeds (a greater depth can be accepted provided the depth of corrosion does not reduce the wall thickness below the minimum calculated wall thickness) General corrosion A reduction in wall thickness over an area exceeding of the cylinder surface W

43、hen the depth of penetration of any pit exceeds (a greater depth can be accepted provided the depth of corrosion does not reduce the wall thickness below the minimum calculated wall thickness) Chain pitting or line or channel corrosion A series of pits or corroded cavities of limited width along the

44、 length or around the corrosion circumference 1) When the total length of corrosion in any direction exceeds of the circumference of the cylinder 2) When the depth of penetration exceeds(a greater depth can be accepted provided the depth of corrosion does not reduce the wall thickness below the mini

45、mum calculated wall thickness) 3) When the depth of corrosion cannot be measured Crevice corrosion Crevice corrosion occurs in the area of the intersection of the foot ring or shroud with the cylinder When the depth of penetration exceeds or when the depth of corrosion cannot be measured 2% 25 % 1 p

46、it 500 mm 2 0,6 mm 20 % 0,4 mm 20 % 0,2 mm 50 % 0,4 mm 0,4 mmISO 10691:2004(E) ISO 2004 All rights reserved 5 6 Filling 6.1 Safe filling quantity Proper filling procedures shall be in place to ensure that no overfilling can occur. The maximum mass of contents per litre of water capacity (filling rat

47、io) shall equal 0,95 times the density of the liquid phase at , and the liquid phase shall not fill the cylinder at any temperature up to . For cylinders used only in a specific climatic area, the competent authority may specify a maximum filling ratio for each mixture for national use. 6.2 Safe fil

48、ling mixture and composition Cylinders shall be filled with the appropriate mixture and composition of LPG. Special care shall be taken to ensure that contaminants that could cause corrosion are not present. 6.3 Accuracy of weighing equipment Filling and check-weigh scales shall have been checked fo

49、r accuracy at least once per day. 6.4 Filling methods Filling of cylinders may be by mass, volume or level. When filling is by mass, the correct tare mass of each individual cylinder shall be used for setting the filling scales. When filling is to a level, the fixed liquid level device shall be checked for operability. Table 3 Other defects Defect Description Rejection limit Depressed bung Damage to the bung which has altered the profile of the cylinder Rejection in all cases, or a limited level of depression/alignme