ISO-TR-12662-1997.pdf
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1、TECHNICAL REPORT ISO/TR 12662 First edition 1997-07-l 5 Certification scheme for prestressing steels Prockdure de certification des armatures de prhcontrainte Reference number lSO/TR 12662:1997(E) Copyright International Organization for Standardization Provided by IHS under license with ISO License
2、e=NASA Technical Standards 1/9972545001 Not for Resale, 04/20/2007 07:11:33 MDTNo reproduction or networking permitted without license from IHS -,-,- ISOITR 12662:1997(E) Foreword IS0 (the International Organization for Standardization) is a worldwide federation of national standards bodies (IS0 mem
3、ber bodies). The work of preparing International Standards is normally carried out through IS0 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, governmen
4、tal and non- governmental, in liaison with ISO, also take part in the work. IS0 collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. The main task of technical committees is to prepare International Standards, but in except
5、ional circumstances a technical committee may propose the publication of a Technical Report of one of the following types: - type 1, when the required support cannot be obtained for the publication of an International Standard, despite repeated efforts; - type 2, when the subject is still under tech
6、nical development or where for any other reason there is the future but not immediate possibility of an agreement on an International Standard; - type 3, when a technical committee has collected data of a different kind from that which is normally published as an International Standard (“state of th
7、e art”, for example). Technical Reports of types 1 and 2 are subject to review within three years of publication, to decide whether they can be transformed into International Standards. Technical Reports of type 3 do not necessarily have to be reviewed until the data they provide are considered to b
8、e no longer valid or useful. lSO/TR 12662, which is a Technical Report of type 2, was prepared by Technical Committee ISO/TC 17, Steel, Subcommittee SC 16, Steels for the reinforcement and prestressing of concrete. 0 IS0 1997 All rights reserved. Unless otherwise specified, no part of this publicati
9、on may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from the publisher. International Organization for Standardization Case Postale 56 l CH-1211 Geneve 20 l Switzerland Internet central iso.ch x.4
10、00 c=ch; a=400net; p=iso; o=isocs; s=central Printed in Switzerland ii Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/20/2007 07:11:33 MDTNo reproduction or networking permitted without
11、 license from IHS -,-,- IS0 lSO/TR 12662: 1997(E) The reason for publishing this Technical Report is to promote world trade with prestressing steel by reducing the differences between the certification schemes which could make the certified prestressing steels acceptable all over the world without a
12、dditional certification. Then the product specifications too will need further harmonization. This document is being issued in the Technical Report (type 2) series of publications (according to subclause G.3.2.2 of part 1 of the ISO/IEC Directives, 1995) as a “prospective standard for provisional ap
13、plication” in the field of prestressed steels because there is an urgent need for guidance on how standards in this field should be used to meet an identified need. This document is not to be regarded as an “International Standard”. It is proposed for provisional application so that information and
14、experience of its use in practice may be gathered. Comments on the content of this document should be sent to the IS0 Central Secretariat. A review of this Technical Report (type 2) will be carried out not later than three years after its publication with the options of: extension for another three
15、years; conversion into an International Standard; or withdrawal. Annex A of this Technical Report is for information only. iii Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/20/2007 07:
16、11:33 MDTNo reproduction or networking permitted without license from IHS -,-,- TECHNICAL REPORT 0 IS0 ISO/TR 12662:1997(E) Certification scheme for prestressing steels 1 Scope This Technical Report gives rules which may be applied for a certification scheme for continuous production of prestressing
17、 steels, in order to verify their conformity with requirements specified in product standards such as IS0 6934. 2 Normative references The following standards contain provisions which, through reference in this text, constitute provisions of this Technical Report. At the time of publication, the edi
18、tions indicated were valid. All standards are subject to revision, and parties to agreement based on this Technical Report are encouraged to investigate the possibility of applying the most recent edition of the standards listed below. Members of IEC and IS0 maintain registers of currently valid Int
19、ernational Standards. IS0 377:-l), Steel and steel products - Location and preparation of samples and test pieces for mechanical testing. IS0 6934-l :I 991, Steel for the prestressing of concrete - Fart I: General requirements. IS0 6934-2:1991, Steel for the prestressing of concrete - Part 2: Cold d
20、rawn wire. IS0 6934-3:1991, Steel for the prestressing of concrete - Part 3: Quenched and tempered wire. IS0 6934-4:1991, Steel for the prestressing of concrete - Part 4: Strand. IS0 6934-5:1991, Steel for the prestressing of concrete - Part 5: Hot-rolled steel bars with or without subsequent proces
21、sing. IS0 9002:1994, Quality systems - Model for quality assurance in production, installation and servicing. IS0 14284:1996, Steel and iron - Sampling and preparation of samples for the determination of chemical composition. ISO/IEC Guide 62:1996, Guidelines for third-party assessment and registrat
22、ion of a supplier s quality system. ISO/IEC Guide 65:1996, Genera/ requirements for the acceptance of certification bodies. 1) To be published. (Revision of IS0 377-1:1989) 1 Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Stand
23、ards 1/9972545001 Not for Resale, 04/20/2007 07:11:33 MDTNo reproduction or networking permitted without license from IHS -,-,- lSO/TR 12662: 1997(E) 3 Definitions For the purposes of this Technical Report, the following definitions apply. 3.1 certification: Assessment and regular surveillance by a
24、certification body of the quality system and compliance of the products with a product standard using sampling and testing of the product supported by statistical analysis. 3.2 certification body: Impartial body, governmental or non-governmental, possessing the necessary competence and responsibilit
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