EN 13173 : 2001

Foreword
Introduction
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

This EN 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.