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  • AS 2832.3-1992

    Superseded A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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    Cathodic protection of metals - Fixed immersed structures

    Available format(s):  Hardcopy, PDF 1 User, PDF 3 Users, PDF 5 Users, PDF 9 Users

    Superseded date:  30-06-2017

    Language(s): 

    Published date:  01-01-1992

    Publisher:  Standards Australia

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    Table of Contents - (Show below) - (Hide below)

    1 - AS 2832.3-1992 CATHODIC PROTECTION OF METALS - FIXED IMMERSED STRUCTURES
    4 - PREFACE
    5 - CONTENTS
    7 - FOREWORD
    8 - SECTION 1 SCOPE AND GENERAL
    8 - 1.1 SCOPE
    8 - 1.2 REFERENCED DOCUMENTS
    8 - 1.3 DEFINITIONS
    11 - SECTION 2 DESIGN OF STRUCTURES FOR CATHODIC PROTECTION
    11 - 2.1 GENERAL
    11 - 2.2 STRUCTURE COATING
    11 - 2.3 TEST POINTS
    11 - 2.4 ISOLATION OF STRUCTURE
    12 - 2.5 ELECTRICAL CONTINUITY
    13 - SECTION 3 COATINGS FOR USE WITH CATHODIC PROTECTION
    13 - 3.1 GENERAL
    13 - 3.2 COATING PROPERTIES
    13 - 3.3 COATING CHOICE
    14 - 3.4 COATING LIFE
    15 - SECTION 4 CRITERIA FOR CATHODIC PROTECTION
    15 - 4.1 GENERAL
    15 - 4.2 FERROUS STRUCTURES
    15 - 4.2.1 Immersed structures
    15 - 4.2.2 Alternative protection criteria
    15 - 4.3 COPPER/COPPER ALLOY STRUCTURES
    15 - 4.4 ALUMINIUM STRUCTURES
    15 - 4.5 MIXED METALLIC STRUCTURES
    15 - 4.6 MEASUREMENT OF POTENTIAL
    15 - 4.6.1 Polarized potential measurement
    16 - 4.7 OVERPROTECTION
    17 - SECTION 5 DESIGN OF CATHODIC PROTECTION SYSTEMS
    17 - 5.1 GENERAL
    17 - 5.2 SAFETY PRECAUTIONS
    17 - 5.3 CHOICE OF SYSTEM- IMPRESSED CURRENT OR GALVANIC ANODES
    18 - 5.4 CONTROL OF INTERFERENCE CURRENTS
    18 - 5.5 CABLES
    18 - 5.5.1 General
    18 - 5.5.2 Types of cable
    18 - 5.5.3 Test cables
    19 - 5.5.4 Impressed current anode cables
    19 - 5.5.5 Galvanic anode cables
    19 - 5.6 CHECK LIST FOR INITIAL SURVEYS
    19 - 5.7 DETERMINATION OF CATHODIC PROTECTION CURRENT REQUIREMENTS
    19 - 5.7.1 General
    19 - 5.7.2 Basic procedures
    20 - 5.7.3 Determination of exposed surface area
    20 - 5.7.4 Prediction of current requirement
    21 - 5.7.5 Calculation of the current capacity
    21 - 5.7.6 Anode layout design
    22 - 5.7.7 Determination of resistance of the anode or anode array to the electrolyte
    22 - 5.7.8 Determination of anode output current
    23 - 5.7.9 Galvanic anode mass requirement
    23 - 5.8 ANODE ARRANGEMENTS
    23 - 5.8.1 General
    23 - 5.8.2 Calculation of appropriate anode/structure separation
    24 - 5.8.3 Positioning of anodes
    24 - 5.9 ANODE MATERIALS AND APPLICATIONS
    24 - 5.10 POWER SUPPLY FOR IMPRESSED CURRENT SYSTEMS
    24 - 5.10.1 Sources of direct current
    24 - 5.10.2 Equipment
    24 - 5.10.3 Calculation of voltage requirements
    25 - 5.11 BACKFILL
    25 - 5.12 SYSTEM DESIGN DOCUMENTATION
    27 - SECTION 6 INSTALLATION OF CATHODIC PROTECTION SYSTEMS
    27 - 6.1 GENERAL
    27 - 6.2 MATERIALS AND EQUIPMENT ACCEPTANCE TESTS
    27 - 6.2.1 General
    27 - 6.2.2 Anodes
    27 - 6.2.3 Cables
    27 - 6.2.4 Transformer/rectifier equipment
    27 - 6.2.5 Prefabricated insulating joints
    28 - 6.3 INSTALLATION OF GALVANIC ANODE SYSTEMS
    28 - 6.4 INSTALLATION OF IMPRESSED CURRENT SYSTEMS
    28 - 6.4.1 Anodes and cabling
    28 - 6.4.2Transformer/rectifier
    28 - 6.5 INSTALLATION OF INSULATING FLANGES AND DEVICES
    29 - SECTION 7 CONTROL OF INTERFERENCE CURRENTS FROM CATHODIC PROTECTION SYSTEMS TO MINIMIZE THEIR EFFECT ON FOREIGN STRUCTURES
    29 - 7.1 GENERAL
    29 - 7.2 REGULATORY REQUIREMENTS
    29 - 7.3 MINIMIZATION OF INTERFERENCE CURRENT
    29 - 7.3.1 Design of the system
    29 - 7.3.2 Detection of interference levels
    30 - 7.3.3 Control of interference
    31 - SECTION 8 OPERATION AND MAINTENANCE OF CATHODIC PROTECTION SYSTEMS
    31 - 8.1 GENERAL
    31 - 8.2 MEASURING TECHNIQUES
    32 - 8.3 COMMISSIONING SURVEY
    32 - 8.4 CATHODIC PROTECTION POTENTIAL SURVEYS
    32 - 8.5 EQUIPMENT MAINTENANCE CHECKS
    32 - 8.5.1 For impressed current systems
    32 - 8.5.2 For galvanic anode installations
    32 - 8.6 STRUCTURE INSPECTIONS
    32 - 8.7 RECORDS
    34 - APPENDIX A - GUIDANCE ON THE GENERAL USE OF CATHODIC PROTECTION
    34 - A1 SCOPE
    34 - A2 GENERAL COMPONENTS OF CATHODIC PROTECTION INSTALLATIONS
    34 - A3 FACTORS AFFECTING THE CORROSION OF METALLIC STRUCTURES
    37 - APPENDIX B - CONTROL OF INTERFERENCE CURRENTS - LIST OF ELECTROLYSIS COMMITTEES

    Abstract - (Show below) - (Hide below)

    Provides guidelines for the cathodic protection of external surfaces of fixed structures which are immersed in various types of water including sea water, and covers the design, installation, operation and maintenance of cathodic protection systems.

    Scope - (Show below) - (Hide below)

    This Standard provides guidelines 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, dam gates, pump station piles in rivers, weirs, mooring buoys, piling, foundations and water inlet/outlet structures.The Standard specifically covers the following subjects which relate to cathodic protection:(a) The design of structures requiring cathodic protection.(b) Coatings for use on immersed metal structures.(c) Criteria for the choice of cathodic protection potential.(d) The design of cathodic protection systems.(e) The installation of cathodic protection systems.(f) The control of interference currents on foreign structures.(g) The cathodic protection of structures subject to stray direct current.(h) The operation and maintenance of cathodic protection systems.NOTES: 1 Guidance on the general use and design of cathodic protection systems and factors affecting the corrosion of immersed metallic structures are given in Appendix A.2 This Standard employs positive current flow, and uses the potential sign conventions specified in AS 1852.

    General Product Information - (Show below) - (Hide below)

    Committee MT-014
    Document Type Standard
    Publisher Standards Australia
    Status Superseded
    Superseded By
    Supersedes
    Under Revision

    History - (Show below) - (Hide below)

    First published as AS 2832.3-1992.

    Standards Referenced By This Book - (Show below) - (Hide below)

    AS 2053-1984 Non-metallic conduits and fittings
    AS 1768-1991 Lightning protection
    AS 3000-1986 Electrical installations - Buildings, structures and premises (known as the SAA Wiring Rules)
    AS 2430.1-1987 Classification of hazardous areas - Explosive gas atmospheres
    AS 1020-1984 The control of undesirable static electricity
    AS 3147-1992 Approval and test specification - Electric cables - Thermoplastic insulated - For working voltages up to and including 0.6/1 kV
    AS 3859-1991 Effects of current passing through the human body
    AS 3100-1990 Approval and test specification - General requirements for electrical equipment
    AS 1076.1-1977 Code of practice for the selection, installation and maintenance of electrical apparatus and associated equipment for use in explosive atmospheres (other than mining applications) Basic requirements
    AS 1627.4-1989 Metal finishing - Preparation and pretreatment of sufaces - Abrasive blast cleaning
    AS 2239-1993 Galvanic (sacrificial) anodes for cathodic protection
    AS 1627.7-1988 Metal finishing - Preparation and pretreatment of surfaces - Hand tool cleaning of metal surfaces
    AS 3108-1990 Approval and test specification - Particular requirements for isolating transformers and safety isolating transformers
    AS 2052-1977 Metallic conduits and fittings
    AS 1852.00-1980 International electrotechnical vocabulary - General index

    Standards Referencing This Book - (Show below) - (Hide below)

    AS 2832.5-2002 Cathodic protection of metals - Steel in concrete structures
    AS 2159-1995 Piling - Design and installation
    AS/NZS 61241.14:2005 Electrical apparatus for use in the presence of combustible dust Selection and installation (IEC 61241-14, Ed.1.0(2004) MOD)
    AS 4997-2005 Guidelines for the design of maritime structures
    AS/NZS 2312:2002 Guide to the protection of structural steel against atmospheric corrosion by the use of protective coatings
    AS/NZS 2381.1:2005 Electrical equipment for explosive gas atmospheres - Selection, installation and maintenance - General requirements
    AS 4036-1992 Corrosion of metal - Dissimilar metals in contact in seawater
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