NEN EN 13173 : 2001

Foreword
1 Scope
  1.1 Structures
  1.2 Materials
  1.3 Environment
  1.4 Safety and environment protection
2 Normative references
3 Terms and definitions
4 Design basis
  4.1 Objectives
  4.2 Cathodic protection criteria
  4.3 Design parameters
  4.4 Electrical current demand
  4.5 Cathodic protection systems
  4.6 Electrical continuity
  4.7 Interactions
5 Impressed current system design
  5.1 Objectives
  5.2 Design considerations
  5.3 Equipment considerations
6 Galvanic anode system design
  6.1 Objectives
  6.2 Design considerations
  6.3 Factors determining the anode current output and
      operating life
  6.4 Location of anodes
7 Cathodic protection system monitoring
  7.1 Objectives
  7.2 Potential measurements
  7.3 Measurement of the impressed current anode electrical
      current output
  7.4 Impressed current power source control
  7.5 Additional monitoring methods
8 Documentation
  8.1 Objectives
  8.2 Impressed current system
  8.3 Galvanic anode systems
Annex A (informative) Guidance for current requirements
        for cathodic protection of offshore floating
        structures
Annex B (informative) Anode resistance and life determination
Annex C (informative) Typical electrochemical characteristics
        of impressed current anodes
Annex D (informative) Typical cofferdam arrangements

Defines the means to be used to cathodically protect the submerged metallic surfaces of steel offshore floating structures and appurtenances in sea water and saline mud.