ISO-4126-2-2003.pdf
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1、 Reference number ISO 4126-2:2003(E) ISO 2003 INTERNATIONAL STANDARD ISO 4126-2 First edition 2003-01-15 Safety devices for protection against excessive pressure Part 2: Bursting disc safety devices Dispositifs de scurit pour protection contre les pressions excessives Partie 2: Dispositifs de sret d
2、isque de rupture Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/11/2007 19:41:58 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 4126-2:2003(E) PDF disclai
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5、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 is found, please inform the Central Secretariat at the address given below. ISO 2003 All righ
6、ts 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 member body in the country of the
7、 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 ii ISO 2003 All rights reserved Copyright International Organization for Standardization Provided by IHS under license with
8、 ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/11/2007 19:41:58 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 4126-2:2003(E) ISO 2003 All rights reserved iii Foreword ISO (the International Organization for Standardization) is a worldwide feder
9、ation 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 in a subject for which a technical committee has been established has the right to be represented on that commit
10、tee. International organizations, governmental and non-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 accordanc
11、e 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 committees are circulated to the member bodies for voting. Publication as an International Standard requires a
12、pproval 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 not be held responsible for identifying any or all such patent rights. ISO 4126-2 was prepared by the European
13、 Committee for Standardization (CEN) in collaboration with Technical Committee ISO/TC 185, Safety devices for protection against excessive pressure, in accordance with the Agreement on technical cooperation between ISO and CEN (Vienna Agreement). This first edition of ISO 4126-2, together with that
14、of ISO 4126-6, cancels and replaces ISO 6718:1991. Throughout the text of this document, read “.this European Standard.“ to mean “.this International Standard.“. ISO 4126 consists of the following parts, under the general title, Safety devices for protection against excessive pressure: Part 1: Safet
15、y valves Part 2: Bursting disc safety devices Part 3: Safety valves and bursting disc safety devices in combination Part 4: Pilot-operated safety valves Part 5: Controlled safety pressure relief systems (CSPRS) Part 6: Application, selection and installation of bursting disc safety devices Part 7: C
16、ommon data For the purposes of this part of ISO 4126, the CEN annex regarding fulfilment of European Council Directives has been removed. Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/
17、11/2007 19:41:58 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 4126-2:2003(E) iv ISO 2003 All rights reserved Contents Page Foreword.vi Introduction.vii 1Scope 1 2Normative references 1 3Terms and definitions3 4Materials5 4.1Selection of materials5 4.2Material specifi
18、cations 6 4.3Protection from corrosion.6 5Types of bursting discs.6 5.1Conventional domed bursting discs (forward acting) .6 5.2Reverse domed bursting discs (reverse acting).7 5.3Flat bursting discs.7 5.4Other types and designs.9 6Bursting disc holders9 6.1Design.9 6.2Types.9 6.3Connections .11 7Bac
19、k pressure supports12 7.1General12 7.2Opening back pressure supports.12 7.3Non-opening back pressure supports.12 8Temperature shields12 9Stiffening rings.12 10Gaskets/seals.12 11Assembly of bursting disc safety devices12 11.1General12 11.2Bursting disc safety devices with replaceable bursting disc a
20、ssemblies.13 11.3Bursting disc safety devices with non-replaceable bursting disc assemblies.13 12Specified bursting pressure requirements .13 13Inspection by the manufacturer .15 14Test procedures.15 14.1General15 14.2Pressure testing.15 14.3Burst testing.15 14.4Leak testing17 14.5Non-destructive ex
21、amination17 15Certification17 16Product designation 18 17Marking .18 17.1General18 17.2Bursting discs/bursting disc assemblies19 Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/11/2007 1
22、9:41:58 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 4126-2:2003(E) ISO 2003 All rights reserved v 17.3Bursting disc holders19 17.4Bursting disc safety devices with non-replaceable bursting disc assemblies.20 17.5Ancillary components .20 17.6Omission of markings.20 1
23、8Preparation for storage and transportation21 18.1General21 18.2Marking of packages .21 18.3Provision of assembly and installation instructions .21 18.4Provision of documents, loose identification plates etc.21 Annex A (normative) Materials .22 Annex B (informative) Materials24 Bibliography29 Copyri
24、ght International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/11/2007 19:41:58 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 4126-2:2003(E) vi ISO 2003 All rights reserved Fo
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