EN ISO 8502-8-2004 en Preparation of steel substrates before application of paints and related products - Tests for the assessment of surface cleanliness - Part 8 Field method for .pdf

1、BRITISH STANDARD BS EN ISO 8502-8:2004 BS 7079-B8:2004 Incorporating Amendment No. 1 to BS 7079-B8:2001 (renumbers the BS as BS EN ISO 8502-8:2004) Preparation of steel substrates before application of paints and related products Tests for the assessment of surface cleanliness Part 8: Field method f

2、or the refractometric determination of moisture The European Standard EN ISO 8502-8:2004 has the status of a British Standard ICS 25.220.10 BS EN ISO 8502-8:2004 This British Standard, having been prepared under the direction of the Sector Policy and Strategy Committee for Materials and Chemicals, w

3、as published under the authority of the Standards Policy and Strategy Committee on 17 December 2001 BSI 2 February 2005 ISBN 0 580 38752 6 National foreword This British Standard is the official English language version of EN ISO 8502-8:2004. It is identical with ISO 8502-8:2001. The UK participatio

4、n 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 or

5、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 inclu

6、de 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 enquir

7、ies 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 pag

8、e, the ISO title page, pages ii to v, a blank page, pages 1 to 6, 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. Date Comments 15515 2 February 2005 Implementation of

9、 the European StandardEUROPEANSTANDARD NORMEEUROPENNE EUROPISCHENORM ENISO85028 December2004 ICS25.220.10 Englishversion Preparationofsteelsubstratesbeforeapplicationofpaintsand relatedproductsTestsfortheassessmentofsurface cleanlinessPart8:Fieldmethodfortherefractometric dedeterminationofmoisture(I

10、SO85028:2001) Prparationdessubjectilesdacieravantapplicationde peinturesetdeproduitsassimilsEssaispourapprcier lapropretdunesurfacePartie8:Mthodeinsitupourla dterminationrfractomtriquedelhumidit(ISO8502 8:2001) VorbereitungvonStahloberflchenvordemAuftragenvon BeschichtungsstoffenPrfungenzurBewertung

11、der OberflchenreinheitTeil8:Feldprfungzur refraktometrischenBestimmungvonWasser(Feuchte) (ISO85028:2001) ThisEuropeanStandardwasapprovedbyCENon21December2004. CENmembersareboundtocomplywiththeCEN/CENELECInternalRegulationswhichstipulatetheconditionsforgivingthisEurope an Standardthestatusofanational

12、standardwithoutanyalteration.Uptodatelistsandbibliographicalreferencesconcernings uchnational standardsmaybeobtainedonapplicationtotheCentralSecretariatortoanyCENmember. ThisEuropeanStandardexistsinthreeofficialversions(English,French,German).Aversioninanyotherlanguagemadebytra nslation undertheresp

13、onsibilityofaCENmemberintoitsownlanguageandnotifiedtotheCentralSecretariathasthesamestatusast heofficial versions. CENmembersarethenationalstandardsbodiesofAustria,Belgium,Cyprus,CzechRepublic,Denmark,Estonia,Finland,France, Germany,Greece,Hungary,Iceland,Ireland,Italy,Latvia,Lithuania,Luxembourg,Ma

14、lta,Netherlands,Norway,Poland,Portugal, Slovakia, Slovenia,Spain,Sweden,SwitzerlandandUnitedKingdom. EUROPEANCOMMITTEEFORSTANDARDIZATION COMITEUROPENDENORMALISATION EUROPISCHESKOMITEEFRNORMUNG ManagementCentre:ruedeStassart,36B1050Brussels 2004CEN Allrightsofexploitationinanyformandbyanymeansreserve

15、d worldwideforCENnationalMembers. Ref.No.ENISO85028:2004:EI NESO 58-20:82( 400E) 2 Foreword The text of ISO 8502-8:2001 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 8502-8:2004

16、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 June 2005, and conflicting national standards sha

17、ll be withdrawn 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,

18、Hungary, 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 8502-8:2001 has been approved by CEN as EN ISO 8502-8:2004 without any modifications. E

19、NISO85028:2004INTERNATIONAL STANDARD ISO 8502-8 First edition 2001-08-01 Reference number ISO 8502-8:2001(E) OSI 2001 Preparation of steel substrates before application of paints and related products Tests for the assessment of surface cleanliness Part 8: Field method for the refractometric determin

20、ation of moisture Prparation des subjectiles dacier avant application de peintures et de produits assimils Essais pour apprcier la propret dune surface Partie 8: Mthode in situ pour la dtermination rfractomtrique de lhumidit ENISO85028:2004ISO -20582:8)E(100 ii ISO 1002 All rithgs rreseved DPF discl

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25、fo the rtseuqeer. ISO cporythgi fofiec esaC tsopael 65 1121-HC Geneva 02 Te.l + 41 22 947 10 11 Fax + 14 22 479 09 47 E-liam copyrightsio.ch Web wwwsi.oc.h ENISO85028:2004OSI -20581002:8)E( ISO 1002 All rithgs rreseved iii Contents Page 1 Scope . 1 2 Normative references . 1 3 Principle 1 4 Reagents

26、 1 5 Apparatus . 2 6 Procedure . 2 7 Expression of results 3 8 Precision . 4 9 Test report 6 ENISO85028:2004ISO -20582:8)E(100 iv ISO 1002 All rithgs rreseved Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies).

27、 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-

28、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 accordance with the rules given in the ISO/IEC Directives, Part

29、3. 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 elements of thi

30、s part of ISO 8502 may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. International Standard ISO 8502-8 was prepared by Technical Committee ISO/TC 35, Paints and varnishes, Subcommittee SC 12, Preparation of steel substrates before a

31、pplication of paints and related products. ISO 8502 consists of the following parts, under the general title Preparation of steel substrates before application of paints and related products Tests for the assessment of surface cleanliness: Part 1: Field test for soluble iron corrosion products Techn

32、ical Report Part 2: Laboratory determination of 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 chl

33、oride on steel surfaces prepared for painting (ion detection tube method) Part 6: Extraction of soluble contaminants for analysis The Bresle method Part 8: Field method for the refractometric determination of moisture Part 9: Field method for the conductometric determination of water-soluble salts P

34、art 10: Field method for the titrimetric determination of water-soluble chloride Part 12: Field method for the titrimetric determination of water-soluble ferrous ions The following parts are in the process of preparation: Part 7: Field method for determination of oil and grease Part 11: Field method

35、 for the turbidimetric determination of water-soluble sulfate Part 13: Field method for the determination of soluble salts by conductometric measurement ENISO85028:2004OSI -20581002:8)E( ISO 1002 All rithgs rreseved v Introduction The performance of protective coatings of paint and related products

36、applied 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;

37、 c) the 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 atta

38、ining specified 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 c

39、an have 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 sp

40、ecified 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 below deal with the stated aspect

41、s of 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

42、 is in turn divided into separate parts. The protective properties of paints and related products depend on the type of coating system that is used and on the amount of moisture (often in microscopic layers of water) on the steel surface when the coating is applied. In sub-clause 5.2 of ISO 12944-7:

43、1998, Paints and varnishes Corrosion protection of steel structures by protective paint systems Part 7: Execution and supervision of paint work, it is specified that coating materials shall not be applied at temperatures below above the dew point, determined in accordance with ISO 8502-4. Wet surfac

44、es shall only be painted with those coating materials which are permitted in the technical data sheet or approved by the paint manufacturer. In many cases, however, application of paint must take place even if there is an obvious risk that the steel surface will not be perfectly dry. This happens no

45、t only in hot and humid areas (e.g. Singapore), where the temperature of the steel is often less than above the dew point for long periods of time, but also in less extreme environments. Under these circumstances, a field method for direct measurement of the surface density of moisture (water) can b

46、e most helpful and even a must when it comes to the decision “to paint, or not to paint”. This part of ISO 8502 describes such a method. 3 C 1 C ENISO85028:2004blank 4002:82058OSINEANRETNIITOLAN TSDNADRA OSI -20581002:8)E( ISO 1002 All rithgs rreseved 1 Preparation of steel substrates before applica

47、tion of paints and related products Tests for the assessment of surface cleanliness Part 8: Field method for the refractometric determination of moisture 1 Scope This part of ISO 8502 describes a field method for the assessment of moisture, usually caused by condensation of water, on steel surfaces

48、prior to application of paint. The method can be used on flat and slightly curved horizontal and vertical surfaces. The assessment should not be done on surfaces that are exposed to any falling water, e.g. rain, or condensation. The lowest surface moisture (water) level that can be detected by the method is . Refinements for considerably lowering this level are indicated in cl