NS EN 12495 : 1ED 2000

Foreword
Introduction
1 Scope
    1.1 Structural parts
    1.2 Materials
    1.3 Environment
2 Normative references
3 Terms and definitions
4 Design basis
    4.1 Objectives
    4.2 Cathodic protection criteria
    4.3 Electrical current demand
    4.4 Coatings
    4.5 Cathodic protection systems - Anode
          dimensions
5 Design of galvanic anodes system
    5.1 General
    5.2 Design considerations
    5.3 Galvanic anode materials
    5.4 Location of anodes
    5.5 Anodes' inserts and attachments design
6 Design of impressed current system
    6.1 General
    6.2 Design considerations
    6.3 Equipment considerations
    6.4 Location considerations
7 Design of monitoring systems
    7.1 Objectives
    7.2 Description
    7.3 Potential measurements
    7.4 Measurement of the anode electrical current
          output
    7.5 Transmission of data
    7.6 Control and monitoring of impressed current
          generators
8 Installation of cathodic protection and monitoring
    systems
9 Commissioning and surveying of cathodic protection
    systems
    9.1 Objectives
    9.2 Galvanic anode system
    9.3 Impressed current system
10 Documentation
    10.1 General
    10.2 Galvanic anodes system
    10.3 Impressed current system
11 Safety and cathodic protection
    11.1 Objectives
    11.2 Physical obstructions
    11.3 Electric shock
    11.4 Gas evolution
Annexes
A (informative) Guidance on current requirement for
    cathodic protection of fixed steel offshore
    structures
B (informative) Anode resistance and life duration
    formulae
C (informative) Recommendations for anode
    installation
D (informative) Safety precautions for impressed
    current system
E (informative) Typical electrochemical
    characteristics for commonly used impressed
    current anodes
Bibliography

Establishes a method of cathodically protecting the submerged areas of fixed steel offshore appurtenances and structures.