NACE-SP0290-2007.pdf
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1、 Standard Practice Impressed Current Cathodic Protection of Reinforcing Steel in Atmospherically Exposed Concrete Structures This NACE International standard represents a consensus of those individual members who have reviewed this document, its scope, and provisions. Its acceptance does not in any
2、respect preclude anyone, whether he or she has adopted the standard or not, from manufacturing, marketing, purchasing, or using products, processes, or procedures not in conformance with this standard. Nothing contained in this NACE International standard is to be construed as granting any right, by
3、 implication or otherwise, to manufacture, sell, or use in connection with any method, apparatus, or product covered by Letters Patent, or as indemnifying or protecting anyone against liability for infringement of Letters Patent. This standard represents minimum requirements and should in no way be
4、interpreted as a restriction on the use of better procedures or materials. Neither is this standard intended to apply in all cases relating to the subject. Unpredictable circumstances may negate the usefulness of this standard in specific instances. NACE International assumes no responsibility for t
5、he interpretation or use of this standard by other parties and accepts responsibility for only those official NACE International interpretations issued by NACE International in accordance with its governing procedures and policies which preclude the issuance of interpretations by individual voluntee
6、rs. Users of this NACE International standard are responsible for reviewing appropriate health, safety, environmental, and regulatory documents and for determining their applicability in relation to this standard prior to its use. This NACE International standard may not necessarily address all pote
7、ntial health and safety problems or environmental hazards associated with the use of materials, equipment, and/or operations detailed or referred to within this standard.Users of this NACE International standard are also responsible for establishing appropriate health, safety, and environmental prot
8、ection practices, in consultation with appropriate regulatory authorities if necessary, to achieve compliance with any existing applicable regulatory requirements prior to the use of this standard. CAUTIONARY NOTICE: NACE International standards are subject to periodic review, and may be revised or
9、withdrawn at any time in accordance with NACE technical committee procedures. NACE International requires that action be taken to reaffirm, revise, or withdraw this standard no later than five years from the date of initial publication. The user is cautioned to obtain the latest edition. Purchasers
10、of NACE International standards may receive current information on all standards and other NACE International publications by contacting the NACE International FirstService Department, 1440 South Creek Drive, Houston, Texas 77084-4906 (telephone +1 281 228-6200). Reaffirmed 2007-03-12 Revised 2000-0
11、6-16 Approved April 1990 NACE International 1440 South Creek Drive Houston, Texas 77084-4906 +1 281/228-6200 ISBN 1-57590-103-X 2007, NACE International NACE SP0290-2007 (formerly RP0290-2000) Item No. 21043 Copyright NACE International Provided by IHS under license with NACELicensee=IHS Employees/1
12、111111001, User=Wing, Bernie Not for Resale, 05/07/2007 21:33:55 MDTNo reproduction or networking permitted without license from IHS -,-,- Copyright NACE International Provided by IHS under license with NACELicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 05/07/2007 21:33:55 MDTN
13、o reproduction or networking permitted without license from IHS -,-,- SP0290-2007 NACE International i _ Foreword The purpose of this NACE standard practice is to present guidelines for impressed current cathodic protection of reinforcing steel in atmospherically exposed concrete structures. This st
14、andard is aimed at owners, engineers, architects, contractors, and all those concerned with rehabilitation of corrosion-damaged reinforced concrete structures. For more information on design, maintenance, and rehabilitation of reinforcing steel in concrete, refer to NACE Standard RP01871 and NACE St
15、andard RP0390.2 For a state-of-the-art overview regarding the use of reference electrodes for atmospherically exposed reinforced concrete structures, refer to NACE International Publication 11100.3 For a state-of-the art overview on criteria for cathodic protection of prestressed concrete structures
16、, refer to NACE International Publication 01102.4 This standard was originally prepared in 1990 by NACE Task Group T-3K-2, a component of Unit Committee T-3K on Corrosion and Other Deterioration Phenomena Associated with Concrete. It was revised by Work Group T-11-1a in 2000, and reaffirmed by Speci
17、fic Technology Group (STG) 01 in 2007. It is issued by NACE International under the auspices of STG 01 on Reinforced Concrete. In NACE standards, the terms shall, must, should, and may are used in accordance with the definitions of these terms in the NACE Publications Style Manual, 4th ed., Paragrap
18、h 7.4.1.9. Shall and must are used to state mandatory requirements. The term should is used to state something good and is recommended but is not mandatory. The term may is used to state something considered optional. _ Copyright NACE International Provided by IHS under license with NACELicensee=IHS
19、 Employees/1111111001, User=Wing, Bernie Not for Resale, 05/07/2007 21:33:55 MDTNo reproduction or networking permitted without license from IHS -,-,- SP0290-2007 ii NACE International _ NACE International Standard Practice Impressed Current Cathodic Protection of Reinforcing Steel in Atmosphericall
20、y Exposed Concrete Structures Contents 1.General 1 2.Definitions 1 3.Criteria . 2 4.Design of Impressed Current Cathodic Protection Systems. 5 5.Installation Practices 7 6.Energizing and System Adjustment. 7 7.Operation and Maintenance of Impressed Current Cathodic Protection Systems 8 8.Records 9 R
21、eferences 10 Bibliography 10 Appendix AAdditional Information Useful for Design (Nonmandatory 11 Appendix BTest Equipment (Nonmandtory) . 12 Figure 1Typical Polarization Decay Curve 4 Figure 2Typical Polarization Development Curve Showing “Instant-Off” Potentials Only 4 _ Copyright NACE Internationa
22、l Provided by IHS under license with NACELicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 05/07/2007 21:33:55 MDTNo reproduction or networking permitted without license from IHS -,-,- SP0290-2007 NACE International 1 _ Section 1: General 1.1 Background 1.1.1 Reinforcing steel is
23、compatible with concrete because of similar coefficients of thermal expansion and because concrete normally provides the steel with excellent corrosion protection. The corrosion protection is the result of the highly alkaline Portland cement that allows a stable, corrosion-mitigating passive oxide f
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