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1、BRITISH STANDARD BS EN ISO 8502-10:2004 BS 7079-B10:2004 Incorporating Amendment No. 1 to BS 7079-B10:2000 (renumbers the BS as BS EN ISO 8502-10:2004) Preparation of steel substrates before application of paints and related products Tests for the assessment of surface cleanliness Part 10: Field met
2、hod for the titrimetric determination of water-soluble chloride The European Standard EN ISO 8502-10:2004 has the status of a British Standard ICS 25.220.10 ? BS EN ISO 8502-10:2004 This British Standard, having been prepared under the direction of the Sector Committee for Materials and Chemicals, w
3、as published under the authority of the Standards Committee and comes into effect on 15 February 2000 BSI 2 February 2005 ISBN 0 580 34247 6 National foreword This British Standard is the official English language version of EN ISO 8502-10:2004. It is identical with ISO 8502-10:1999. The UK particip
4、ation in its preparation was entrusted to Technical Committee STI/21, Surface preparation of steel, which has the responsibility to: A list of organizations represented on this committee can be obtained on request to its secretary. Cross-references The British Standards which implement international
5、 or European publications referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online. This publication does not purport to i
6、nclude all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible international/European committee any en
7、quiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the EN ISO title page, the EN ISO foreword
8、 page, the ISO title page, pages ii to iv, pages 1 to 4, an inside back cover and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. DateComments 155142 February 2005Implementation of the Europea
9、n Standard EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 8502-10 December 2004 ICS 25.220.10 English version Preparation of steel substrates before application of paints and related products - Tests for the assessment of surface cleanliness - Part 10: Field method for the titrimetric dete
10、rmination of water-soluble chloride (ISO 8502-10:1999) Prparation des subjectiles dacier avant application de peintures et de produits assimils - Essais pour apprcier la propret dune surface - Partie 10: Mthode in situ pour la dtermination titrimtrique du chlorure hydrosoluble (ISO 8502-10:1999) Vor
11、bereitung von Stahloberflchen vor dem Auftragen von Beschichtungsstoffen - Prfungen zur Bewertung der Oberflchenreinheit - Teil 10: Feldprfung zur titrimetrischen Bestimmung von wasserlslichem Chlorid (ISO 8502-10:1999) This European Standard was approved by CEN on 21 December 2004. CEN members are
12、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 th
13、e Central Secretariat or to any CEN member. This European Standard exists 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 stat
14、us as the official versions. CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Sloveni
15、a, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: rue de Stassart, 36 B-1050 Brussels 2004 CENAll rights of exploitation in any form and by any means reserved worldwide for CEN nat
16、ional Members. Ref. No. EN ISO 8502-10:2004: E I NESO 58-20:01002( 4E) 2 Foreword The text of ISO 8502-10:1999 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 8502-10:2004 by Techn
17、ical 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 June 2005, and conflicting national standards shall be wi
18、thdrawn at the latest by June 2005. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary,
19、 Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. Endorsement notice The text of ISO 8502-10:1999 has been approved by CEN as EN ISO 8502-10:2004 without any modifications. EN ISO
20、850210:2004 A Reference number ISO 8502-10:1999(E) INTERNATIONAL STANDARD ISO 8502-10 First edition 1999-12-01 Preparation of steel substrates before application of paints and related products Tests for the assessment of surface cleanliness Part 10: Field method for the titrimetric determination of
21、water-soluble chloride Prparation des subjectiles dacier avant application de peintures et de produits assimils Essais pour apprcier la propret dune surface Partie 10: Mthode in situ pour la dtermination titrimtrique du chlorure hydrosoluble EN ISO 850210:2004 ii EN ISO 850210:2004 OSI)E(9991:01-205
22、8 OSI 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 out through ISO technical committees. Each member body interested in a subject for
23、 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 a
24、ll matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 3. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International
25、Standard requires approval by at least 75 % of the member bodies casting a vote. International Standard ISO 8502-10 was prepared by Technical Committee ISO/TC35, Paints and varnishes, Subcommittee SC 12, Preparation of steel substrates before the application of paints and related products. ISO 8502
26、consists of the following parts, under the general title Preparation of steel substrates before the application of paints and related products Tests for the assessment of surface cleanliness: Part 1: Field test for soluble iron corrosion products Technical Report Part 2: Laboratory determination of
27、chloride on cleaned surfaces Part 3: Assessment of dust on steel surfaces prepared for painting (pressure-sensitive tape method) Part 4: Guidance on the estimation of the probability of condensation prior to paint application Part 5: Measurement of chloride on steel surfaces prepared for painting (i
28、on detection tube method) Part 6: Extraction of soluble contaminants for analysis The Bresle method Part 7: Field method for the determination of oil and grease Part 8: Field method for the refractometric determination of moisture Part 9: Field method for the conductometric determination of water-so
29、luble salts Part 10: Field method for the titrimetric determination of water-soluble chloride Part 11: Field method for the turbidimetric determination of water-soluble sulfate Part 12: Field method for the titrimetric determination of water-soluble ferrous ions Part 13: Field method for the determi
30、nation of soluble salts by conductometric measurement At the time of publication of this part of ISO 8502, parts 7, 8, 11, 12 and 13 were in course of preparation. EN ISO 850210:2004 )E(9991:01-2058 OSI OSI iv Introduction The performance of protective coatings of paint and related products applied
31、to steel is 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
32、 surface profile. 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 s
33、pecified levels 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
34、 a direct influence on the choice of protective coating to be applied and on its performance. Such recommendations are found in other documents such as national standards and codes of practice. It will be necessary for the users of these International Standards to ensure that the qualities specified
35、 are: compatible and appropriate both for 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
36、 preparation of steel substrates: ISO 8501: 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
37、 is in turn divided into separate parts. There are several methods for the analysis of chloride in solution. At least one of them is already an International Standard, ISO 8502-2. However, most of these methods are for laboratory use and very few are suitable for field use, i.e. in conjunction with
38、sampling in workshops, at building sites, on board ships, etc, often under severe environmental conditions. The proposed field method for chloride and the corresponding methods of analysis that have been developed for other contaminants (such as sulfate, soluble iron corrosion products, and oil and
39、grease) are intended to be used in conjunction with the Bresle method for the extraction of contaminants from a surface, ISO 8502-6. These methods of analysis provide results which, after application of a simple conversion factor, indicate directly the amount of contaminant per unit surface area, us
40、ually expressed in mg/m2. Of course, the same methods of analysis can also be used in conjunction with other contaminant extraction methods. EN ISO 850210:2004 LANOITANRETNI DRADNATS OSI)E(9991:01-2058 OSI 1 Preparation of steel substrates before application of paints and related products Tests for
41、the assessment of surface cleanliness Part 10: Field method for the titrimetric determination of water-soluble chloride CAUTION The method described in this part of ISO 8502 involves drop titration with mercuric nitrate solution. The small quantity of titrant solution and its low concentration are n
42、ot likely to make it a hazard (e.g. by ingestion). From a legal point of view, however, the solution might represent an environmental pollution hazard. To avoid this, this part of ISO 8502 specifies requirements for the safe disposal and destruction of the solution (see 7.5). The method also involve
43、s the use of hydrogen fluoride, and particular care should be taken when handling this reagent due to its hazardous nature. 1 Scope This part of ISO 8502 specifies a field method for the determination of water-soluble chloride by drop titration. The method is intended mainly for use in the assessmen
44、t of contaminants on a surface. It is easy for unskilled personnel to carry out and is sufficiently accurate for most practical purposes. 2 Normative references The following normative documents contain provisions which, through reference in this text, constitute provisions of this part of ISO 8502.
45、 For dated references, subsequent amendments to, or revisions of, any of these publications do not apply. However, parties to agreements based on this part of ISO 8502 are encouraged to investigate the possibility of applying the most recent editions of the normative documents listed below. For unda
46、ted references, the latest edition of the normative document referred to applies. Members of ISO and IEC maintain registers of currently valid International Standards. ISO 8502-2:1992, Preparation of steel substrates before application of paints and related products Tests for the assessment of surfa
47、ce cleanliness Part 2: Laboratory determination of chloride on cleaned surfaces. ISO 8502-6:1995, Preparation of steel substrates before application of paints and related products Tests for the assessment of surface cleanliness Part 6: Extraction of soluble contaminants for analysis The Bresle metho
48、d. 3 Principle The water-soluble contaminants are removed from the test surface by the Bresle method (see ISO 8502-6) or any other convenient method. Water, containing sodium fluoride and hydrogen fluoride, is used as the solvent. The chloride concentration in the solution is determined by drop titr
49、ation with mercuric nitrate solution, using diphenylcarbazone and bromophenol blue as indicators. EN ISO 850210:2004 )E(9991:01-2058 OSI OSI 2 The concentration of the titrant, the size of the titrant drops and the area of the test surface (normally 1 250 mm2) are chosen so that the number of drops required for the titration multiplied by a simple conversion factor gives the surface density