BS EN 14505-2005 复杂构造的阴极保护2.pdf
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1、BRITISH STANDARD BS EN 14505:2005 Cathodic protection of complex structures The European Standard EN 14505:2005 has the status of a British Standard ICS 77.060 ? BS EN 14505:2005 This British Standard was published under the authority of the Standards Policy and Strategy Committee on 19 May 2005 BSI
2、 19 May 2005 ISBN 0 580 46033 9 National foreword This British Standard is the official English language version of EN 14505:2005. Reference should also be made to BS 7361, Code of practice for land and marine applications, which will eventually be withdrawn when all the CEN standards relating to ca
3、thodic protection currently being prepared, are published. The UK participation in its preparation was entrusted to Technical Committee GEL/603, Cathodic protection, which has the responsibility to: A list of organizations represented on this committee can be obtained on request to its secretary. Cr
4、oss-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 “Search” facility of the BSI Electronic Catalogue or o
5、f 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 obligations. aid enquirers to understand the text;
6、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 of pages This document comprises a front cover,
7、 an inside front cover, the EN title page, pages 2 to 24, 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 标准分享网 w w w .b z f x w .c o m 免费下载 EUROPEAN STAN
8、DARD NORME EUROPENNE EUROPISCHE NORM EN 14505 April 2005 ICS 77.060 English version Cathodic protection of complex structures Protection cathodique des structures complexesKathodischer Korrosionsschutz komplexer Anlagen This European Standard was approved by CEN on 15 March 2005. CEN members are bou
9、nd 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 C
10、entral 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 status
11、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, Slovenia,
12、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 2005 CENAll rights of exploitation in any form and by any means reserved worldwide for CEN nation
13、al Members. Ref. No. EN 14505:2005: E EN 14505:2005 (E) 2 Contents Page Foreword 3 1 Scope.4 2 Normative references .4 3 Terms and definitions.4 4 Criteria for the cathodic protection of complex structures .4 5 Prerequisites for the application of cathodic protection to a complex structure 5 6 Base
14、data for design.6 7 Design and prerequisites .7 8 Installation of cathodic protection systems10 9 Commissioning.11 10 Inspection and maintenance12 Annex A (informative) Principle scheme of a complex structure .14 Annex B (informative) Example of an industrial complex structure.15 Annex C (informativ
15、e) Reinforced concrete data in complex structures .16 Annex D (informative) Increasing soil potential.17 Annex E (informative) Groundbed data 21 Bibliography.24 标准分享网 w w w .b z f x w .c o m 免费下载 EN 14505:2005 (E) 3 Foreword This European Standard (EN 14505:2005) has been prepared by Technical Commi
16、ttee CEN/TC 219 “Cathodic protection”, 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, at the latest by October 2005, and conflicting national standards shall be withdrawn
17、at the latest by October 2005. It may be difficult to obtain complete cathodic protection of certain structures when following the general guidelines in EN 12954. This may be due to an electrical connection to one or more metal structures (electrodes) situated in the same electrolyte as the structur
18、e, which is to be protected. In particular, the structure may be earthed in order to mitigate electrical hazards or the connection to the other structures may be dictated by construction or operational requirements. An electrical connection to a foreign structure can result in a significantly increa
19、sed cathodic protection current demand, since the current flows not only to the structure to be protected but also to the foreign structure. This unwanted increased current demand is enhanced when the foreign structure consists of a metal, which is more noble (having a more positive resting potentia
20、l) than the metal in the structure to be protected. Connection to a copper earthing electrode or to the steel reinforcement in a concrete structure are examples of the latter. These difficulties can mean that a significantly increased cathodic protection current is required because of structures ele
21、ctrically connected to the structure to be protected, resulting in inadequate cathodic protection, current distribution and shielding effects. For this reason, the term “complex structure” has been used. It does not refer to the complexity of the structure or to the complexity of the cathodic protec
22、tion system. In such conditions the prerequisites, the criteria and the methods described in the present document expand those given in EN 12954. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European St
23、andard: Austria, Belgium, 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. EN 14505:2005 (E) 4
24、1 Scope This European Standard applies to the cathodic protection of complex structures. It is applicable to structures, which are to be cathodically protected, but cannot be electrically isolated, whether for technical or safety reasons, from foreign metallic structures situated in the same electro
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