BS-EN-ISO-11844-1-2008.pdf
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1、BRITISH STANDARD BS EN ISO 11844-1:2008 Corrosion of metals and alloys Classification of low corrosivity of indoor atmospheres Part 1: Determination and estimation of indoor corrosivity ICS 77.060 ? Licensed CopyChinese University of Hong Kong, 21/10/2008 07:49, Uncontrolled Copy, (c) BSI BS EN ISO
2、11844-1:2008 This British Standard was published under the authority of the Standards Policy and Strategy Committee on 28 April 2006 BSI 2008 ISBN 978 0 580 60544 4 National foreword This British Standard is the UK implementation of EN ISO 11844-1:2008. It is identical with ISO 11844-1:2006. It supe
3、rsedes BS ISO 11844-1:2006 which is withdrawn. The UK participation in its preparation was entrusted to Technical Committee ISE/NFE/8, Corrosion of metals and alloys. A list of organizations represented on this committee can be obtained on request to its secretary. This publication does not purport
4、to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard cannot confer immunity from legal obligations. Amendments/corrigenda issued since publication DateComments 29 August 2008This corrigendum renumbers BS ISO 1184
5、4-1:2006 as BS EN ISO 11844-1:2008 Licensed CopyChinese University of Hong Kong, 21/10/2008 07:49, Uncontrolled Copy, (c) BSI EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 11844-1 April 2008 ICS 77.060 English Version Corrosion of metals and alloys - Classification of low corrosivity of i
6、ndoor atmospheres - Part 1: Determination and estimation of indoor corrosivity (ISO 11844-1:2006) Corrosion des mtaux et alliages - Classification de la corrosivit faible des atmosphres dintrieur - Partie 1: Dtermination et estimation de la corrosivit des atmosphres dintrieur (ISO 11844-1:2006) Korr
7、osion von Metallen und Legierungen - Einteilung der Korrosivitt in Rumen mit geringer Korrosivitt - Teil 1: Bestimmung und Abschtzung der Korrosivitt in Rumen (ISO 11844-1:2006) This European Standard was approved by CEN on 21 March 2008. CEN members are bound to comply with the CEN/CENELEC Internal
8、 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 CEN Management Centre or to any CEN member.
9、 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 CEN Management Centre has the same status as the official versions. CEN members
10、are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Swit
11、zerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: rue de Stassart, 36 B-1050 Brussels 2008 CENAll rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No
12、. EN ISO 11844-1:2008: E Licensed CopyChinese University of Hong Kong, 21/10/2008 07:49, Uncontrolled Copy, (c) BSI ii Foreword The text of ISO 11844-1:2006 has been prepared by Technical Committee ISO/TC 156 “Corrosion of metals and alloys” of the International Organization for Standardization (ISO
13、) and has been taken over as EN ISO 11844-1:2008 by Technical Committee CEN/TC 262 “Metallic and other inorganic coatings” the secretariat of which is held by BSI. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, a
14、t the latest by October 2008, and conflicting national standards shall be withdrawn at the latest by October 2008. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying an
15、y or all such patent rights. 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, Hunga
16、ry, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. Endorsement notice The text of ISO 11844-1:2006 has been approved by CEN as a EN ISO 11844-1:2008 without any modi
17、fication. Licensed CopyChinese University of Hong Kong, 21/10/2008 07:49, Uncontrolled Copy, (c) BSI iii Contents Page Introduction v 1 Scope . 1 2 Normative references. 1 3 Terms and definitions. 2 4 Symbols and abbreviations. 2 5 Classification of corrosivity. 3 5.1 General. 3 5.2 Categories of in
18、door corrosivity. 3 6 Determination of indoor atmospheric corrosivity. 3 7 Characterization of indoor atmospheres with respect to indoor corrosivity. 3 7.1 General. 3 7.2 Estimation of indoor corrosivity . 4 Annex A (informative) Relation between ISO, IEC and ISA classification systems 6 Annex B (in
19、formative) Outdoor and indoor concentrations of some of the most important pollutants in different types of environments . 9 Annex C (informative) General characterisation of metal corrosion in indoor atmospheres 10 Annex D (informative) Guideline for estimation of indoor corrosivity 13 Bibliography
20、. 16 BS EN ISO 11844-1:2008 Licensed CopyChinese University of Hong Kong, 21/10/2008 07:49, Uncontrolled Copy, (c) BSI blank Licensed CopyChinese University of Hong Kong, 21/10/2008 07:49, Uncontrolled Copy, (c) BSI v Introduction Metals, alloys and metallic coatings are subject to atmospheric corro
21、sion under the impact of air humidity, especially when gaseous and solid substances of atmospheric pollution co-impact. Corrosivity data are of fundamental importance for derivation of suitable corrosion protection, or for evaluation of serviceability of metal elements of a product. ISO 9223 classif
22、ies the atmospheric environment into 5 corrosivity categories. Low-corrosivity indoor atmospheres are indoor atmospheres with C 1 (very low) or C 2 (low) corrosivity categories according to ISO 9223. The classification in ISO 9223 is too broad for some purposes in low-corrosivity indoor atmospheres,
23、 e.g. places where electronic devices, sophisticated technical products, or works of art and historical objects are stored. For such purposes, it is necessary to subdivide the corrosivity categories C 1 (very low) and C 2 (low) into indoor corrosivity categories in this part of ISO 11844. The evalua
24、tion of low-corrosivity indoor atmospheres can be accomplished by direct determination of corrosion attack of selected metals (see ISO 11844-2) or by measurement of environmental parameters (see ISO 11844-3) which may cause corrosion on metals and alloys. This part of ISO 11844 describes general pro
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