《BS-EN-ISO-8501-3-2007 BS-7079-A3-2006.pdf》由会员分享，可在线阅读，更多相关《BS-EN-ISO-8501-3-2007 BS-7079-A3-2006.pdf（16页珍藏版）》请在三一文库上搜索。
1、BRITISH STANDARD BS EN ISO 8501-3:2007 BS 7079-A3: 2006 Incorporating amendment no. 1 (renumbers BS ISO 8501-3:2006 as BS EN ISO 8501-3:2007) Preparation of steel substrates before application of paints and related products Visual assessment of surface cleanliness Part 3: Preparation grades of welds
2、, edges and other areas with surface imperfections The European Standard EN ISO 8501-3:2007 has the status of a British Standard ICS 25.220.10 ? Licensed Copy: London South Bank University, London South Bank University, Sat Sep 01 03:16:00 GMT+00:00 2007, Uncontrolled Copy, (c) BSI BS EN ISO 8501-3:
3、2007 This British Standard was published under the authority of the Standards Policy and Strategy Committee on 30 November 2006 BSI 2007 ISBN 978 0 580 59926 2 National foreword This British Standard is the UK implementation of EN ISO 8501-3:2007. It is identical with ISO 8501-3:2006. It supersedes
4、BS 7079-A3:2002 which is withdrawn. The UK participation in its preparation was entrusted to Technical Committee STI/21, Surface preparation of steel. A list of organizations represented on this committee can be obtained on request to its secretary. This publication does not purport to include all t
5、he 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 1735431 August 2007Renumbers BS ISO 8501-3:2006 as BS EN ISO 8501-3:20
6、07 Licensed Copy: London South Bank University, London South Bank University, Sat Sep 01 03:16:00 GMT+00:00 2007, Uncontrolled Copy, (c) BSI EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 8501-3 July 2007 ICS 25.220.10 English Version Preparation of steel substrates before application of p
7、aints and related products - Visual assessment of surface cleanliness - Part 3: Preparation grades of welds, edges and other areas with surface imperfections (ISO 8501-3:2006) Prparation des subjectiles dacier avant application de peintures et de produits assimils - valuation visuelle de la propret
8、dun subjectile - Partie 3: Degrs de prparation des soudures, artes et autres zones prsentant des imperfections (ISO 8501-3:2006) Vorbereitung von Stahloberflchen vor dem Auftragen von Beschichtungsstoffen - Visuelle Beurteilung der Oberflchenreinheit - Teil 3: Vorbereitungsgrade von Schweinhten, Kan
9、ten und anderen Flchen mit Oberflchenunregelmigkeiten (ISO 8501-3:2006) This European Standard was approved by CEN on 11 July 2007. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national stan
10、dard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN Management Centre or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any other
11、 language made by translation under the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia,
12、Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCH
13、ES KOMITEE FR NORMUNG Management Centre: rue de Stassart, 36 B-1050 Brussels 2007 CENAll rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 8501-3:2007: E Licensed Copy: London South Bank University, London South Bank University, Sat Sep
14、01 03:16:00 GMT+00:00 2007, Uncontrolled Copy, (c) BSI Foreword The text of ISO 8501-3:2006 has been prepared by Technical Committee ISO/TC 35 “Paints and varnishes” of the International Organization for Standardization (ISO) and has been taken over as EN ISO 8501-3:2007 by Technical Committee CEN/T
15、C 139 “Paints and varnishes“, the secretariat of which is held by DIN. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by January 2008, and conflicting national standards shall be withdrawn at the la
16、test by January 2008. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Ice
17、land, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. Endorsement notice The text of ISO 8501-3:2006 has been approved by CEN as EN ISO 8501-3:2007 without any modifications. EN I
18、SO 8501-3:2007 Licensed Copy: London South Bank University, London South Bank University, Sat Sep 01 03:16:00 GMT+00:00 2007, Uncontrolled Copy, (c) BSI Reference number ISO 8501-3:2006(E) INTERNATIONAL STANDARD ISO 8501-3 Second edition 2006-03-01 Preparation of steel substrates before application
19、of paints and related products Visual assessment of surface cleanliness Part 3: Preparation grades of welds, edges and other areas with surface imperfections Prparation des subjectiles dacier avant application de peintures et de produits assimils valuation visuelle de la propret dun subjectile Parti
20、e 3: Degrs de prparation des soudures, artes et autres zones prsentant des imperfections EN ISO 8501-3:2007 Licensed Copy: London South Bank University, London South Bank University, Sat Sep 01 03:16:00 GMT+00:00 2007, Uncontrolled Copy, (c) BSI ii Licensed Copy: London South Bank University, London
21、 South Bank University, Sat Sep 01 03:16:00 GMT+00:00 2007, Uncontrolled Copy, (c) BSI iii 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 o
22、ut 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-governmental, in liaison with ISO, also take part in the work. ISO c
23、ollaborates 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 2. The main task of technical committees is to prepare International
24、 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 a vote. Attention is drawn to the possibility that some of the elemen
25、ts 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 8501-3 was prepared by Technical Committee ISO/TC 35, Paints and varnishes, Subcommittee SC 12, Preparation of steel substrates before application of paints a
26、nd related products. This second edition cancels and replaces the first edition (ISO 8501-3:2001). The main changes are: revision of the description of preparation grade P1 in Clause 4 and the preparation grades for welding spatter and undercut in Table 1; replacement of the phrases “as found”, “as
27、welded”, etc., with “no preparation”; deletion of Annex A “Correlation between preparation grades and corrosivity categories”. ISO 8501 consists of the following parts, under the general title Preparation of steel substrates before application of paints and related products Visual assessment of surf
28、ace cleanliness: Part 1: Rust grades and preparation grades of uncoated steel substrates and of steel substrates after overall removal of previous coatings Informative Supplement to Part 1: Representative photographic examples of the change of appearance imparted to steel when blast-cleaned with dif
29、ferent abrasives Part 2: Preparation grades of previously coated steel substrates after localized removal of previous coatings Part 3: Preparation grades of welds, edges and other areas with surface imperfections Part 4: Initial surface conditions, preparation grades and flash rust grades in connect
30、ion with high- pressure water jetting EN ISO 8501-3:2007 Licensed Copy: London South Bank University, London South Bank University, Sat Sep 01 03:16:00 GMT+00:00 2007, Uncontrolled Copy, (c) BSI iv Introduction The performance of protective coatings of paint and related products applied to steel is
31、significantly affected by the state of the steel surface immediately prior to painting. The principal factors that are known to influence this performance are: a) the presence of rust and mill scale; b) the presence of surface contaminants, including salts, dust, oils and greases; c) the surface pro
32、file. International Standards ISO 8501, ISO 8502 and ISO 8503 have been prepared to provide methods of assessing these factors, while ISO 8504 provides guidance on the preparation methods that are available for cleaning steel substrates, indicating the capabilities of each in attaining specified lev
33、els of cleanliness. These International Standards do not contain recommendations for the protective coating system to be applied to the steel surface. Neither do they contain recommendations for the surface quality requirements for specific situations even though surface quality can have a direct in
34、fluence on the choice of protective coating to be applied and on its performance. Such recommendations are given in other documents such as national standards and codes of practice. Users of these International Standards should ensure the qualities specified are: compatible and appropriate both for
35、the environmental conditions to which the steel will be exposed and for the protective coating system to be used; within the capability of the cleaning procedure specified. The four International Standards referred to above deal with the following aspects of preparation of steel substrates: ISO 8501
36、 Visual assessment of surface cleanliness; ISO 8502 Tests for the assessment of surface cleanliness; ISO 8503 Surface roughness characteristics of blast-cleaned steel substrates; ISO 8504 Surface preparation methods. Each of these International Standards is in turn divided into separate parts. Imper
37、fections at welds, edges and other areas of steel substrates are generally starting points for corrosion. Such areas are also difficult to protect by application of paints and related products. To assist in achieving efficient corrosion protection, this part of ISO 8501 defines certain imperfections
38、 and preparation grades for such areas. EN ISO 8501-3:2007 Licensed Copy: London South Bank University, London South Bank University, Sat Sep 01 03:16:00 GMT+00:00 2007, Uncontrolled Copy, (c) BSI 1 Preparation of steel substrates before application of paints and related products Visual assessment o
39、f surface cleanliness Part 3: Preparation grades of welds, edges and other areas with surface imperfections 1 Scope This part of ISO 8501 describes preparation grades of welds, edges and other areas, on steel surfaces with imperfections. Such imperfections can become visible before and/or after an a
40、brasive blast-cleaning process. The preparation grades given in this part of ISO 8501 are to make steel surfaces with imperfections, including welded and fabricated surfaces, suitable for the application of paints and related products. 2 Normative references The following referenced documents are in
41、dispensable 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 amendments) applies. ISO 12944-2, Paints and varnishes Corrosion protection of steel structures by protective p
42、aint systems Part 2: Classification of environments ISO 12944-3, Paints and varnishes Corrosion protection of steel structures by protective paint systems Part 3: Design considerations 3 Types of imperfection This part of ISO 8501 deals with imperfections on: welds; edges; steel surfaces generally.
43、The various types of imperfection are illustrated and described in Table 1. EN ISO 8501-3:2007 Licensed Copy: London South Bank University, London South Bank University, Sat Sep 01 03:16:00 GMT+00:00 2007, Uncontrolled Copy, (c) BSI 2 4 Preparation grades Three preparation grades for making steel su
44、rfaces with visible imperfections suitable for the application of paints and related products are as follows: P1 Light preparation: no preparation or only minimum preparation needs to be carried out before application of paint; P2 Thorough preparation: most imperfections are remedied; P3 Very thorou
45、gh preparation: surface is free of significant visible imperfections. The significance of visible imperfections should preferably be agreed between all relevant parties, depending on the specific application. Requirements for the preparation grades are given in Table 1. NOTE 1 It is important that t
46、he preparation methods used to achieve these preparation grades are not deleterious to the integrity of the steel surface or welded areas. For example, strong grinding pressure can result in the formation of heat-affected areas on a steel surface, and removal of defects by grinding can leave sharp e
47、dges at the edges of the grind pattern. NOTE 2 It is possible that different imperfections on a structure will require different preparation grades. For example, undercut (Table 1, 1.4) might require P3 preparation while all other imperfections might require P2 preparation. This can, in particular,
48、be the case when there are requirements for the aesthetic appearance of the finish. In such cases, P3 could be specified even if there were no apparent corrosivity requirements (see ISO 12944-2). NOTE 3 A replica, known as NACE standard RP 0178, showing examples of weld imperfections and certain lev
49、els of preparation, can be obtained from NACE International, PO Box 218340, Houston, Texas 77218-8340, USA. EN ISO 8501-3:2007 Licensed Copy: London South Bank University, London South Bank University, Sat Sep 01 03:16:00 GMT+00:00 2007, Uncontrolled Copy, (c) BSI 3 Table 1 Imperfections and preparation grades Type of imperfection Preparation grades Description Illustration P1 P2 P3 1 Welds 1.1 Welding spatter Surface shall be