BS-EN-12502-1-2004.pdf
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1、BRITISH STANDARD BS EN 12502-1:2004 Protection of metallic materials against corrosion Guidance on the assessment of corrosion likelihood in water distribution and storage systems Part 1: General The European Standard EN 12502-1:2004 has the status of a British Standard ICS 77.060; 23.040.99; 91.140
2、.60 ? Licensed Copy: sheffieldun sheffieldun, na, Sat Oct 28 07:00:33 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 12502-1:2004 This British Standard was published under the authority of the Standards Policy and Strategy Committee on 19 January 2005 BSI 19 January 2005 ISBN 0 580 45298 0 Nationa
3、l foreword This British Standard is the official English language version of EN 12502-1:2004. The UK participation in its preparation was entrusted to Technical Committee ISE/NFE/8, Corrosion of metals and alloys, which has the responsibility to: A list of organizations represented on this committee
4、 can be obtained on request to its secretary. Cross-references The British Standards which implement international 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 “Searc
5、h” facility of the BSI Electronic Catalogue or of British Standards Online. This publication does not purport to include 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 obl
6、igations. aid enquirers to understand the text; present to the responsible international/European committee any enquiries 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
7、 of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 11 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 Licensed Copy: sheffie
8、ldun sheffieldun, na, Sat Oct 28 07:00:33 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 12502-1 December 2004 ICS 77.060; 23.040.99; 91.140.60 English version Protection of metallic materials against corrosion - Guidance on the assessment of corrosio
9、n likelihood in water distribution and storage systems - Part 1: General Protection des matriaux mtalliques contre la corrosion - Recommandations pour lvaluation du risque de corrosion dans les installations de distribution et de stockage deau - Partie 1: Gnralits Korrosionsschutz metallischer Werks
10、toffe - Hinweise zur Abschtzung der Korrosionswahrscheinlichkeit in Wasserverteilungs- und speichersystemen - Teil 1: Allgemeines This European Standard was approved by CEN on 22 November 2004. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions f
11、or 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. This European Standard exists in three officia
12、l 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, Bel
13、gium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION C
14、OMIT 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 national Members. Ref. No. EN 12502-1:2004: E Licensed Copy: sheffieldun sheffieldun, na, Sat
15、 Oct 28 07:00:33 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 12502-1:2004 (E) 2 Contents Page Foreword3 Introduction.4 1 Scope 5 2 Normative references5 3 Terms and definitions .5 3.1 Terms and definitions .5 4 Types of corrosion.6 5 Factors influencing corrosion likelihood6 5.1 General6 5.2 Chara
16、cteristics of the metallic material.7 5.3 Characteristics of the water7 5.4 Design and construction.8 5.5 Pressure testing and commissioning9 5.6 Operating conditions.10 6 Assessment of corrosion likelihood10 Bibliography11 Licensed Copy: sheffieldun sheffieldun, na, Sat Oct 28 07:00:33 GMT+00:00 20
17、06, Uncontrolled Copy, (c) BSI EN 12502-1:2004 (E) 3 Foreword This document (EN 12502-1:2004) has been prepared 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,
18、 either by publication of an identical text or by endorsement, at the latest by June 2005, and conflicting national standards shall be withdrawn at the latest by June 2005. This standard is in five parts: Part 1: General; Part 2: Influencing factors for copper and copper alloys; Part 3: Influencing
19、factors for hot dip galvanized ferrous materials; Part 4: Influencing factors for stainless steels; Part 5: Influencing factors for cast iron, unalloyed and low alloyed steels. Together these five parts constitute a package of inter-related European Standards with a common date of withdrawal (dow) o
20、f 2005-06. 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, Iceland, Ireland, Italy,
21、 Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. Licensed Copy: sheffieldun sheffieldun, na, Sat Oct 28 07:00:33 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 12502-1:2004 (E) 4 Introduction The water dis
22、tribution and storage systems under consideration consist of a variety of metals and alloys in pipework and in other components, i.e. pumps, valves and heat exchangers. Corrosion on the water-side of these systems generally leads to a build-up of surface corrosion product layers, which, depending on
23、 the circumstances, can or cannot be protective. In some cases, corrosion leads to the impairment of the function of the system, i.e. corrosion damage. This impairment can manifest itself in: perforation (leakage); blockage of system components; detrimental changes of water composition. The type and
24、 rate of corrosion for any particular alloy system can depend on: characteristics of the metallic material; characteristics of the water; design and construction; pressure testing and commissioning; operating conditions. As a result of the complex interactions between the various influencing factors
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- BS EN 12502 2004
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