ISO 16486-5-2012 Plastics piping systems for the supply of gaseous fuels - Unplasticized polyamide (PA-U) piping systems with fusion jointing and mechanical joi.pdf
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1、 ISO 2012 Plastics piping systems for the supply of gaseous fuels Unplasticized polyamide (PA-U) piping systems with fusion jointing and mechanical jointing Part 5: Fitness for purpose of the system Systmes de canalisations en matires plastiques pour la distribution de combustibles gazeux Systmes de
2、 canalisations en polyamide non plastifi (PA-U) avec assemblages par soudage et assemblages mcaniques Partie 5: Aptitude lemploi du systme INTERNATIONAL STANDARD ISO 16486-5 First edition 2012-06-01 Reference number ISO 16486-5:2012(E) ISO 16486-5:2012(E) ii ISO 2012 All rights reserved COPYRIGHT PR
3、OTECTED DOCUMENT ISO 2012 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 permission in writing from either ISO at the address below or ISOs
4、 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 Switzerland ISO 16486-5:2012(E) ISO 2012 All rights reserved iii Contents Page Foreword iv Introducti
5、on v 1 Scope 1 2 Normative references . 1 3 T erms, definitions, symbols and abbreviated terms 2 3.1 T erms and definitions General 2 3.2 T erms and definitions for preparation of test assemblies by electrofusion . 2 4 Fitness for purpose . 5 4.1 Method of preparation of assemblies for testing . 5 4
6、.2 Requirements for fitness for purpose . 5 Annex A (normative) Preparation of test assemblies by butt fusion 10 Annex B (normative) Preparation of test assemblies by electrofusion .13 Annex C (normative) T est methods for the assessment of fitness for purpose of transition fittings .18 Bibliography
7、 .20 ISO 16486-5:2012(E) 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 committees. Each member body interested i
8、n 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 the International Electrotechnical Commis
9、sion (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 International Standards adopted by the technical
10、 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 be the subject of patent rights. ISO shall
11、 not be held responsible for identifying any or all such patent rights. ISO 16486-5 was prepared by Technical Committee ISO/TC 138, Plastics pipes, fittings and valves for the transport of fluids, Subcommittee SC 4, Plastics pipes and fittings for the supply of gaseous fuels. This first edition of I
12、SO 16486-5 cancels and replaces the first edition of ISO 22621-5:2010 which has been technically revised. ISO 16486 consists of the following parts, under the general title Plastics piping systems for the supply of gaseous fuels Unplasticized polyamide (PA-U) piping systems with fusion jointing and
13、mechanical jointing: ISO 16486 consists of the following parts, under the general title Plastics piping systems for the supply of gaseous fuels Unplasticized polyamide (PA-U) piping systems with fusion jointing and mechanical jointing: Part 1: General Part 2: Pipes Part 3: Fittings Part 5: Fitness f
14、or purpose of the system Part 6: Code of practice for design, handling and installation iv ISO 2012 All rights reserved ISO 16486-5:2012(E) Introduction Thin wall thickness unplasticized polyamide (PA-U) pipes and solvent cement joints are used typically for low pressures, while thicker wall thickne
15、ss pipes and butt fusion, electrofusion or mechanical joints are typically used for high pressures. For technical and safety reasons, it is not possible to mix the components of the two types of piping system (thin wall thickness pipes cannot be jointed by butt fusion or mechanical joints and vice v
16、ersa). In particular, solvent cement joints must not be used for jointing for high pressure piping systems. So for the time being, the standardization programme dealing with unplasticized polyamide (PA-U) piping systems for the supply of gaseous fuels is split into two series of International Standa
17、rds, with one series (ISO 17467) covering piping systems the components of which are connected by solvent cement jointing and the other (ISO 16486) the components of which are connected by fusion jointing and/or mechanical jointing. When more experience will be gained from the field, it might be rea
18、sonable to merge the ISO 17467 series and the ISO 16486 series in one single series applicable to PA-U piping systems. A similar series (ISO 17135) for fusion and mechanically jointed plasticized polyamide (PA-P) piping systems is in preparation. ISO 2012 All rights reserved v Plastics piping system
19、s for the supply of gaseous fuels Unplasticized polyamide (PA-U) piping systems with fusion jointing and mechanical jointing Part 5: Fitness for purpose of the system 1 Scope This part of ISO 16486 specifies the requirements of fitness for purpose of the unplasticized polyamide (PA-U) piping system,
20、 intended to be buried and used for the supply of gaseous fuels. It also specifies the definitions of electrofusion and butt fusion joints. This part of ISO 16486 specifies the method of preparation of test piece joints and the tests to be carried out on these joints for assessing the fitness for pu
21、rpose of the system under normal and extreme conditions. It also specifies the test parameters for the test methods to which it refers. ISO 16486 is applicable to PA-U piping systems the components of which are connected by fusion jointing and/or mechanical jointing. In conjunction with the other pa
22、rts of ISO 16486, it is applicable to PA-U fittings, their joints and to joints with components of PA-U. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition
23、cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 291, Plastics Standard atmospheres for conditioning and testing ISO 1167-1, Thermoplastics pipes, fittings and assemblies for the conveyance of fluids Determination of the res
24、istance to internal pressure Part 1: General method ISO 1167- 4, Thermoplastics pipes, fittings and assemblies for the conveyance of fluids Determination of the resistance to internal pressure Part 4: Preparation of assemblies ISO 6259-1, Thermoplastics pipes Determination of tensile properties Part
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- ISO1648652012PLASTICSPIPINGSYSTEMSFORTHESUPPLYOFGASEOUSFUELSUNPLASTICIZEDPOLYAMIDEPAUPIPINGSYSTEMSWITHFUSIONJOINTINGANDMECHANICALJOIPDF

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