EN 12474:2001

Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Criteria and principles for cathodic protection
   design
5 Design of sacrificial anodes system
6 Installation of sacrificial anodes
7 Design of impressed current systems
8 Installation of impressed current systems
9 Commissioning of cathodic protection systems
10 Control of interference currents
11 Monitoring and surveying of cathodic protection
   system
12 Safety
13 Documentation
Annex A (informative) Guidance on current requirement
         for cathodic protection of pipeline and risers
Annex B (informative) Anode sizing calculations
Annex C (informative) Attenuation curves
Annex D (informative) Safety precautions for impressed
         current system
Annex E (informative) Typical electrochemical characteristics
         for commonly used impressed current anodes
Bibliography

This European Standard establishes the general criteria and recommendations for the design, installation, monitoring and commissioning of the cathodic protection systems for submarine pipelines. This standard is applicable to all grades of carbon manganese steel and to stainless steel pipelines; it covers all types of sea water and seabed environments encountered in submerged conditions.The cathodic protection of short lengths of submarine pipelines and their branches, which are directly connected to cathodically protected onshore pipelines, are outside of the scope of this standard (see EN 12954:2001).The cathodic protection of risers is included in this standard only if they are insulated from the supporting structure. The cathodic protection of the risers in direct electrical contact with the supporting structure is included in EN 12495.