DEFSTAN 02-704/1(2009) : 2009

Foreword
1 Scope
2 Warning
3 Normative References
4 Definitions
5 Abbreviations
6 General Introduction to Corrosion and Corrosion Protection
  6.1 General CP Principles
  6.2 Cathodic Protection Systems
      6.2.1 Impressed Current Cathodic Protection (ICCP)
            Systems
      6.2.2 Sacrificial Anode Systems
  6.3 General Design Parameters
      6.3.1 Current Densities Required for Protection
      6.3.2 Coating Damage (Coating Breakdown Factors)
  6.4 Introduction to Corrosion/CP Generated Signatures
      6.4.1 General
      6.4.2 Electric Signature
      6.4.3 Corrosion Related Magnetic Signature
      6.4.4 Extra Low Frequency Electromagnetic (ELFE)
            Signature
      6.4.5 Interaction between CP Systems and Corrosion
            Signatures
  6.5 Modelling Techniques
      6.5.1 General
      6.5.2 Electric Dipole Modelling
      6.5.3 Boundary Element Modelling
      6.5.4 Physical Scale Modelling
  6.6 Ship Fitting Out
  6.7 Safety
7 ICCP Systems
  7.1 Purpose & Scope
  7.2 General Points
      7.2.1 Introduction
      7.2.2 Important Considerations
  7.3 ICCP System Design Parameters
      7.3.1 ICCP Anodes
      7.3.2 Anode Shields
      7.3.3 Reference Electrodes
      7.3.4 Controller
      7.3.5 Connections
  7.4 Testing & Installation
  7.5 In Service
  7.6 Procurement Parameters
      7.6.1 Anode, Power Supply and Control Systems
      7.6.2 Potential Measurement System
      7.6.3 Shaft Grounding System
  7.7 General Design Methods and Calculations
      7.7.1 General Recommendation
      7.7.2 ICCP Design without Detailed Computation
      7.7.3 ICCP Design for High Performance Systems
      7.7.4 Anode Design
  7.8 Signature Considerations
      7.8.1 General Principles
      7.8.2 Signature Goal
      7.8.3 Anodes & Reference Electrodes
      7.8.4 Open Loop Control Systems
      7.8.5 Closed Loop Control Systems
      7.8.6 Validity of Maintaining the Signature Goal
8 Sacrificial Anode Systems
  8.1 Purpose & Scope
      8.1.1 High Tensile Steels (HTS)
      8.1.2 Low Signature Systems
  8.2 Anodes and Materials
      8.2.1 Electrochemical Capacity, C
      8.2.2 Anode Utilization Factor, U
      8.2.3 Anode Castings
      8.2.4 Anode to Seawater Resistance
  8.3 Design Methodology
      8.3.1 Design Life (t[final])
      8.3.2 Calculation of Surface Area for Protection
      8.3.3 Identification of Operational Requirements and
            Specification of Protection Current Densities
      8.3.4 Protection Current Requirements
      8.3.5 Calculation of Total Anode Mass
      8.3.6 Calculation of Total Number of Anodes
      8.3.7 Anode Distribution
  8.4 Sacrificial Anode Bonding
  8.5 Testing and Through Life Maintenance of Sacrificial
      Anode Systems
  8.6 Sacrificial Anode Storage
  8.7 Numerical (Boundary Element - BE) Modelling for
      Sacrificial Anode Design
  8.8 Reduced (More Positive) Potential Sacrificial Anode
      Design
  8.9 Seawater (Pipe) Systems
Annex A - Definitions
Annex B - Abbreviations
Annex C - Resistance Calculations
Annex D - Anode Shield Calculations
Annex E - Control Algorithm Design
Annex F - Reference Electrode Accuracy
Annex G - Stability and Controllability
Annex H - Optimisation for Signatures of the Number and
          Location of ICCP Anodes
Annex I - BE Modelling of Shape, Shields & Resistance