Standard
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AS 2832.3-2005
[Current]Cathodic protection of metals, Part 3: Fixed immersed structures
Specifies requirements for the cathodic protection of external surfaces of fixed immersed structures, including offshore platforms, wharves, jetties, pontoons, sewage treatment plants, water treatment plants, lock gates, pump station piles in rivers, weirs, mooring buoys, piling, foundations and water inlet/outlet structures.
Published: 22/11/2005
Pages: 64
Table of contents
Cited references
Content history
Table of contents
Header
About this publication
Preface
Foreword
1 Scope and general
1.1 Scope
1.2 Referenced documents
1.3 Definitions
1.4 Competence of personnel
2 Criteria for cathodic protection
2.1 Scope and general
2.1.1 Scope
2.1.2 General
2.2 Protection criteria
2.2.1 General
2.2.2 Ferrous structures
2.2.3 Aluminium structures
2.2.4 Mixed metallic structures
2.2.5 Structures subject to variable stray current effects
2.3 Overprotection
2.3.1 Ferrous structures
2.3.2 Aluminium structures
2.3.3 Potential criteria for titanium
3 Measurement and equipment
3.1 General
3.2 Potential measurement and equipment
3.2.1 General
3.2.2 Position of monitoring electrodes
4 Design of structures for cathodic protection
4.1 Scope and general
4.1.1 Scope
4.1.2 General
4.2 Structure coating
4.3 Test points
4.4 Isolation of structure
4.5 Electrical continuity
5 Design of cathodic protection systems
5.1 General
5.2 Safety precautions
5.2.1 Personal electrical safety
5.2.2 Aquatic electrical safety
5.3 Design requirements
5.4 Design data
5.4.1 General
5.4.2 Structure layout
5.4.3 Cathodic protection current requirements
5.5 Control of interference currents
5.6 Cables
5.6.1 General
5.6.2 Types of cable
5.6.3 Test cables
5.6.3.1 Specification
5.6.3.2 Insulation colours
5.6.4 Impressed current anode cables
5.6.4.1 Specification
5.6.4.2 Cable identification
5.6.5 Galvanic anode cables
5.7 System design documentation
6 Cathodic protection of structures subject to stray direct traction current
6.1 Scope and general
6.1.1 Scope
6.1.2 General
6.2 Minimization of stray current effects
6.2.1 General
6.2.2 Minimization of track leakage current at its source
6.2.3 Mitigation of stray current pick-up and discharge from the structure
6.2.4 Mitigation of stray current discharge using traction current drainage
6.2.4.1 Reduction of discharge
6.2.4.2 Maximizing effectiveness of drainage bonds
6.2.4.3 Drainage bond operation
7 Installation of cathodic protection systems
7.1 Scope
7.2 Approval to install
7.3 Installation practice
7.4 Materials and equipment acceptance tests
7.4.1 General
7.4.2 Anodes
7.4.3 Cables
7.4.4 Transformer/rectifier equipment
7.4.5 Prefabricated insulating joints
7.5 Installation of galvanic anode systems
7.6 Installation of impressed current systems
7.6.1 Anodes and cabling
7.6.2 Transformer/rectifier
7.7 Installation of insulating flanges and devices
8 Control of interference currents from cathodic protection systems to minimize their effect on foreign structures
8.1 General
8.2 Regulatory requirements
8.3 Minimization of interference current
8.3.1 Design of the system
8.3.2 Detection of interference levels
8.3.3 Control of interference
9 Commissioning of cathodic protection systems
9.1 Scope and general
9.1.1 Scope
9.1.2 General
9.2 Pre-energization testing
9.3 System operation and adjustment
9.4 Post-energization tests
9.5 Records
9.6 Commissioning report
9.7 Operation manuals
10 Operation and maintenance of cathodic protection systems
10.1 General
10.2 Measuring techniques
10.3 Cathodic protection potential surveys
10.4 Equipment maintenance checks
10.4.1 Impressed current systems
10.4.2 Galvanic anode installations
10.5 Structure inspections
10.6 Records
Appendix A
A1 Scope
A2 General components of cathodic protection installations
A3 Factors affecting the corrosion of metallic structures
Appendix B
B1 General
B2 Measurement of polarization potential
Appendix C
C1 Scope and general
C1.1 Scope
C1.2 General
C2 Calibration
C3 Maintenance
Appendix D
Appendix E
E1 General
E2 Choice of system—impressed current or galvanic anodes
E3 Check list for initial surveys
E4 Determination of cathodic protection current requirements
E4.1 Outline of design procedure
E4.2 Determination of exposed surface area
E4.3 Prediction of current requirement
E4.4 Calculation of current capacity
E4.5 Anode layout design
E4.6 Determination of resistance of the anode or anode array to the electrolyte
E4.7 Determination of anode output current
E4.8 Galvanic anode mass requirement
E5 Anode arrangements
E5.1 General
E5.2 Calculation of appropriate anode/structure separation
E5.3 Installation of anodes
E5.3.1 Positioning of galvanic anodes
E5.3.2 Position of impressed current anodes
E6 Anode materials and applications
E7 Power supply for impressed current systems
E7.1 Source of direct current
E7.2 Equipment
E7.3 Calculation of voltage requirements
E8 Backfill
E9 System design documentation
Appendix F
Appendix G
Appendix H
Appendix I
Appendix J
Appendix K
K1 General
K2 Coating properties
K3 Coating choice
K4 Coating life
Cited references in this standard
[Current]
Electrical apparatus for explosive gas atmospheres, Part 10: Classification of hazardous areas (IEC 60079-10:2002 MOD)
AS/NZS 61558
Safety of power transformers, power supply units and similar (series)
[Withdrawn]
Effects of current on human beings and livestock, Part 2: Special aspects
[Available Superseded]
Effects of current on human beings and livestock, Part 1: General aspects
[Current]
Approval and test specification — General requirements for electrical equipment
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