UNE-EN 50162:2005

Introduction
1 Scope
2 Normative references
3 Definitions
4 Information exchange and co-operation
5 Identification and measurement of stray current
  interference
  5.1 Identification
  5.2 Measurement
6 Criteria for stray-current interference
  6.1 Anodic interference
  6.2 Cathodic interference
7 Reduction of stray current interference - Modifications
  to current source
  7.1 General
  7.2 Principles
  7.3 Direct current systems at industrial sites
  7.4 Direct current systems at ports
  7.5 Direct current communication systems
  7.6 Direct current traction systems
  7.7 High-voltage direct current transmission systems
  7.8 Cathodic protection systems
  7.9 Interference caused by electrical drainage (secondary
      interference)
8 Reduction of stray current interference - Modifications
  to the interfered structure
  8.1 General
  8.2 Design prerequisites
  8.3 Installation of mitigation devices
9 Inspection and maintenance
Annex A (informative) Stray current corrosion, potential
        measurements and IR-drop
Annex B (informative) Principles of anodic and cathodic
        interference
Annex C (informative) Criteria for maximum acceptable
        levels of potential shift delta U of anodic
        interference
Annex D (informative) The use of current probes to evaluate
        fluctuating stray current interference on cathodically
        protected structures
Annex E (informative) Interference situations and protection
        techniques
Bibliography

Specifies the general principles to be adopted to minimize the effects of stray current corrosion caused by direct-current (d.c.) on buried or immersed metal structures.