BS-EN-ISO-11126-1-1997 BS-7079-F1-1997.pdf

BRITISH STANDARD BS EN ISO 11126-1:1997 BS 7079-F1: 1997 Preparation of steel substrates before application of paints and related products Group F: Non-metallic blast cleaning abrasives Part F1: General introduction and classification The European Standard EN ISO 11126-1:1997 has the status of a British Standard ICS 25.220.10; 87.020 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 19 09:01:50 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN ISO 11126-1:1997 This British Standard, having been prepared under the direction of the Sector Board for Materials and Chemicals, was published under the authority of the Standards Board and comes into effect on 15 June 1997 © BSI 02-1999 The following BSI references relate to the work on this standard: Committee reference STI/21 Announcement in BSI News April 1997 ISBN 0 580 27634 1 Committees responsible for this British Standard The preparation of this British Standard was entrusted to Technical Committee STI/21, Surface preparation of steel, upon which the following bodies were represented: Association of Consulting Engineers British Chemical Engineering Contractors Association British Coatings Federation Ltd British Constructional Steelwork Association Ltd British Grit Association British Iron and Steel Producers Association British Railways Board Department of Transport Electricity Association Institute of Corrosion National Federation of Painting and Decorating Contractors Oil and Colour Chemists Association Paint Research Association Royal Society of Chemistry Water Services Association of England and Wales Amendments issued since publication Amd. No.DateComments Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 19 09:01:50 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN ISO 11126-1:1997 © BSI 02-1999i Contents Page Committees responsibleInside front cover National forewordii Foreword2 Forewordii Introduction1 1Scope1 2Definitions1 3Classification2 4Designation of abrasives2 5Identification and marking2 Annex A (informative) International standards for metallic and non-metallic blast-cleaning abrasivesInside back cover Table 1 Commonly used non-metallic (N) blast-cleaning abrasives for steel substrate preparation2 Table 2 Initital particle shape2 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 19 09:01:50 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN ISO 11126-1:1997 ii © BSI 02-1999 National foreword This British Standard has been prepared by Technical Committee STI/21 and is the English language version of EN ISO 11126-1:1997 Preparation of steel substrates before application of paints and related products Specifications for non-metallic blast-cleaning abrasives Part 1: General introduction and classification, published by the European Committee for Standardization (CEN). It is identical with ISO 11126-1:1993 including the two Technical Corrigenda published in 1997, published by the International Organization for Standardization (ISO). ISO 11126-1 was produced as a result of international discussions in which the United Kingdom took an active part. This standard supersedes BS 7079-F1:1994, which is withdrawn. International Standard ISO 11126-1 was prepared by Technical Committee ISO/TC35, Paints and varnishes, Sub-committee SC12, Preparation of steel substrates before application of paints and related products. Other parts of ISO 11126 are identical with the following parts of BS 7079. Part F3: Specification for copper refinery slag; Part F4: Specification for coal furnace slag; Part F5: Specification for nickel refinery slag; Part F6: Specification for iron furnace slag; Part F7: Specification for fused aluminium oxide; Part F8: Specification for olivine sand. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, the EN ISO title page, page 2, the ISO title page, page ii, pages 1 and 2, an inside back cover and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover. Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 19 09:01:50 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM EN ISO 11126-1 February 1997 ICS 87.020 Descriptors: See ISO document English version Preparation of steel substrates before application of paints and related products Specifications for non-metallic blast-cleaning abrasives Part 1: General introduction and classification (ISO 11126-1:1993, including Technical Corrigenda 1:1997 and 2:1997) Préparation des subjectiles dacier avant application de peintures et de produits assimilés Spécifications pour abrasifs non métalliques destinés à la préparation par projection Partie 1: Introduction générale et classification (ISO 11126-1:1993, Rectificatifs Techniques 1:1997 et 2:1997, inclus) Vorbereitung von Stahloberflächen vor dem Auftragen von Beschichtungsstoffen Anforderungen an nichtmetallische Strahlmittel Teil 1: Allgemeine Einleitung und Einteilung (ISO 11126-1:1993, einschließlich Technische Korrekturen 1:1997 und 2:1997) This European Standard was approved by CEN on 1996-12-27. 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 standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the Central Secretariat or to any CEN member. The European Standards exist in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CEN European Committee for Standardization Comité Européen de Normalisation Europäisches Komitee für Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels © 1997 Copyright reserved to CEN members Ref. No. EN ISO 11126-1:1997 E Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 19 09:01:50 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN ISO 11126-1:1997 © BSI 02-1999 2 Foreword The text of the International Standard from Technical Committee ISO/TC 35 “Paints and varnishes” of the International Organization for Standardization (ISO) has been taken over as an European Standard by Technical Committee CEN/TC 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 month of August 1997, and conflicting national standards shall be withdrawn at the latest by August 1997. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom. Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 19 09:01:50 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 19 09:01:50 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN ISO 11126-1:1997 ii © BSI 02-1999 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 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 the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. 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. International Standard ISO 11126-1 was prepared by Technical Committee ISO/TC 35, Paints and varnishes, Subcommittee SC 12, Preparation of steel substrates before application of paints and related products. ISO 11126 consists of the following parts, under the general title Preparation of steel substrates before application of paints and related products Specifications for non-metallic blast-cleaning abrasives: Part 1: General introduction and classification; Part 2: Silica sand; Part 3: Copper refinery slag; Part 4: Coal furnace slag; Part 5: Nickel refinery slag; Part 6: Iron furnace slag; Part 7: Fused aluminium oxide; Part 8: Olivine sand; Part 9: Staurolite; Part 10: Garnet. At the time of publication of this part of ISO 11126-2, ISO 11126-7, ISO 11126-9 and ISO 11126-10 were in course of preparation. Annex A of this part of ISO 11126 is for information only. Descriptors: Paints, varnishes, substrates, steel products, blast-cleaning, abrasives, non-metallic abrasives, specifications, generalities. Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 19 09:01:50 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN ISO 11126-1:1997 © BSI 02-19991 Introduction This is one of a number of parts of ISO 11126 specifying requirements for non-metallic abrasives for blast-cleaning. Test methods for non-metallic blast-cleaning abrasives are given in the various parts of ISO 11127 (see Annex A). The requirements for metallic abrasives commonly used for blast-cleaning are specified in the various parts of ISO 11124. Test methods to be used to define these requirements are contained in the various parts of ISO 11125 (see Annex A). Abrasive blast-cleaning techniques are widely used to clean and prepare surfaces. During work on development of a series of International Standards dealing with the preparation of steel substrates before application of paints and related products, it was decided that a need existed for a series of International Standards covering those blast-cleaning abrasives commonly used in preparation of steelwork. The type of blast-cleaning abrasive used and its particle shape can significantly affect the surface appearance and profile form of the treated surface. The informative supplement to ISO 8501-11) provides photographic examples of the change in appearance imparted to steel when blast-cleaned with different abrasive types. ISO 8503-22) describes the assessment of the surface roughness of prepared surfaces using comparators. Table 1 of this part of ISO 11126 identifies the type of comparator to be used with each of the blast-cleaning abrasives considered. WARNING Equipment, materials and abrasives used for surface preparation can be hazardous if used carelessly. Many national regulations exist for those materials and abrasives that are considered to be hazardous during or after use (waste management), such as free silica or carcinogenic or toxic substances. These regulations are therefore to be observed. It is important to ensure that adequate instructions are given and that all required precautions are exercised. 1 Scope This part of ISO 11126 describes a classification of non-metalllic blast-cleaning abrasives for the preparation of steel substrates before application of paints and related products. It specifies the characteristics which are required for the complete designation of such abrasives. This part of ISO 11126 applies to abrasives supplied in the “new” or unused condition only. It does not apply to abrasives either during or after use. NOTE 1Although this part of ISO 11126 has been developed specifically to meet requirements for preparation of steelwork, the properties specified will generally be appropriate for use when preparing other material surfaces, or components, using blast-cleaning techniques. These techniques are described in ISO 8504-2:1992, Preparation of steel substrates before application of paints and related products Surface preparation methods Part 2: Abrasive blast-cleaning. 2 Definitions For the purposes of this part of ISO 11126, the following definitions apply. 2.1 blast-cleaning abrasive a solid material intended to be used for abrasive blast-cleaning 2.2 abrasive blast-cleaning the impingement of a high-kinetic-energy stream of blast-cleaning abrasive on to the surface to be prepared 2.3 shot particles that are predominantly round, that have a length of less than twice the maximum particle width and that do not have edges, broken faces or other sharp surface defects 2.4 grit particles that are predominantly angular, that have fractured faces and sharp edges and that are less than half-round in shape 1) ISO 8501-1:1988/Suppl, Preparation of steel substrates before application of paints and related products Visual assessment of surface 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 different abrasives. (To be published.) 2) ISO 8503-2:1988, Preparation of steel substrates before application of paints and related products Surface roughness characteristics of blast-cleaned steel substrates Part 2: Method for the grading of surface profile of abrasive blast-cleaned steel Comparator procedure. Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 19 09:01:50 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN ISO 11126-1:1997 2 © BSI 02-1999 Table 1 Commonly used non-metallic (N) blast-cleaning abrasives for steel substrate preparation 3 Classification 3.1 Abrasive type Blast-cleaning abrasives shall be classified according to material, origin or manufacture. Table 1 gives the abbreviated coding which shall be used to identify each of the types considered. NOTE 2The non-metallic blast-cleaning abrasives listed in Table 1 are those commonly used for the preparation of steel substrates before application of paints and related products. The list is not intended to be exhaustive. 3.2 Initial particle shape The particle shape characterizes the geometric form of the abrasive particles. Basic forms of non-metallic blast-cleaning abras