BS-ISO-17455-2005.pdf
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1、BRITISH STANDARD BS ISO 17455:2005 Plastics piping systems Multilayer pipes Determination of the oxygen permeability of the barrier pipe ICS 23.040.20 ? Licensed Copy: London South Bank University, London South Bank University, Sun Jun 17 07:04:47 GMT+00:00 2007, Uncontrolled Copy, (c) BSI BS ISO 17
2、455:2005 This British Standard was published under the authority of the Standards Policy and Strategy Committee on 29 June 2007 BSI 2007 ISBN 978 0 580 52961 0 National foreword This British Standard was published by BSI. It is the UK implementation of ISO 17455:2005, incorporating Corrigendum March
3、 2007. The UK participation in its preparation was entrusted by Technical Committee PRI/88, Plastics piping systems, to Subcommittee PRI/88/4, Test methods. A list of organizations represented on this committee can be obtained on request to its secretary. This publication does not purport to include
4、 all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard cannot confer immunity from legal obligations. Amendments issued since publication Amd. No. DateComments Licensed Copy: London South Bank University, London South Bank U
5、niversity, Sun Jun 17 07:04:47 GMT+00:00 2007, Uncontrolled Copy, (c) BSI Reference number ISO 17455:2005(E) INTERNATIONAL STANDARD ISO 17455 First edition 2005-10-01 Plastics piping systems Multilayer pipes Determination of the oxygen permeability of the barrier pipe Systmes de canalisations en pla
6、stiques Tubes multicouches Dtermination de la permabilit loxygne de la couche barrire dun tube BS ISO 17455:2005 Licensed Copy: London South Bank University, London South Bank University, Sun Jun 17 07:04:47 GMT+00:00 2007, Uncontrolled Copy, (c) BSI ii Licensed Copy: London South Bank University, L
7、ondon South Bank University, Sun Jun 17 07:04:47 GMT+00:00 2007, Uncontrolled Copy, (c) BSI iii Contents Page Foreword iv Introduction v 1 Scope . 1 2 Principle. 1 3 Terms and definitions. 1 4 Symbols and abbreviated terms . 2 5 Apparatus 3 6 Test piece 4 7 Preconditioning. 4 8 Calibration of the te
8、st assembly . 4 9 Preparation for testing . 4 10 Measuring procedure . 5 11 Calculation of flux. 7 12 Test report . 8 Annex A (informative) Oxygen solubility as a function of temperature . 9 Bibliography. 10 BS ISO 17455:2005 Licensed Copy: London South Bank University, London South Bank University,
9、 Sun Jun 17 07:04:47 GMT+00:00 2007, Uncontrolled Copy, (c) BSI iv 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 carried out through ISO technical
10、 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. ISO collaborates closely with
11、 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 International Standards. Draft Intern
12、ational 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 elements of this document may
13、be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO 17455 was prepared by Technical Committee ISO/TC 138, Plastics pipes, fittings and valves for the transport of fluids, Subcommittee SC 5, General properties of pipes, fittings and va
14、lves of plastic materials and their accessories Test methods and basic specifications. BS ISO 17455:2005 Licensed Copy: London South Bank University, London South Bank University, Sun Jun 17 07:04:47 GMT+00:00 2007, Uncontrolled Copy, (c) BSI v Introduction In response to the worldwide demand for sp
15、ecifications, requirements and test methods for multilayer pipes, WG 16 of ISO/TC 138/SC 5 was created at a meeting held in Kyoto, Japan, in 1998. The working group then started drafting three test standards (including ISO 17455) for multilayer pipes: ISO 17456, Plastics piping systems Multilayer pi
16、pes Determination of long-term strength; ISO 17454, Plastics piping systems Multilayer pipes Test method for the adhesion of the different layers by using a pulling rig. Only multilayer pipes are dealt with in this International Standard and for these purposes cross-linked polyethylene (PE-X) as wel
17、l as adhesives are to be considered as a thermoplastics material. BS ISO 17455:2005 Licensed Copy: London South Bank University, London South Bank University, Sun Jun 17 07:04:47 GMT+00:00 2007, Uncontrolled Copy, (c) BSI blank Licensed Copy: London South Bank University, London South Bank Universit
18、y, Sun Jun 17 07:04:47 GMT+00:00 2007, Uncontrolled Copy, (c) BSI 1 Plastics piping systems Multilayer pipes Determination of the oxygen permeability of the barrier pipe 1 Scope This International Standard specifies two test methods for determining the oxygen permeability of barrier pipe: the dynami
19、c (Method I) and the static (Method II). In principle, both methods give the same results. The method to be applied is not application-dependent, but can be specified in the referring standard. 2 Principle The principle is measurement of the oxygen transfer through the wall of the test piece under s
20、pecified conditions. The oxygen increase is measured in a system of which the test piece forms part. Oxygen can only be transported through the wall of the test piece. Therefore, the increased amount of oxygen in the closed system is the result of the functioning of the barrier layer of the test pie
21、ce. NOTE A certain continuous oxygen permeation through the barrier layer is allowed. 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 multilayer pipe pipe comprising layers of different materials 3.2 multilayer M pipe multilayer pipe comprisi
22、ng layers of polymers and one or more metal layers NOTE The wall thickness of the pipe consists of at least 60 % polymer layers. 3.3 multilayer P pipe multilayer pipe comprised of two or more polymer layers 3.4 inner layer layer in contact with the liquid or gas 3.5 outer layer layer exposed to the
23、outer environment BS ISO 17455:2005 Licensed Copy: London South Bank University, London South Bank University, Sun Jun 17 07:04:47 GMT+00:00 2007, Uncontrolled Copy, (c) BSI 2 3.6 embedded layer layer between the outer and inner layer NOTE There can be more than one embedded layer. 3.7 barrier layer
24、 layer intended to prevent or greatly diminish oxygen transport from outside the pipe into the inside water NOTE For multilayer P pipes, the barrier layer is normally not stress-designed. 3.8 closed system system which comprises stainless steel pipes, couplings and a tap, as well as the test piece,
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