Cathodic Protection


Cathodic protection is the protection of (usually) subterranean metallic structures prone to electro-chemical corrosion from stray ground-conducted current.In the main, cathodic protection employs the use of a powered cathode and anode system that (1) offers a sacrificial corrosion target and (2) is able to lead stray current back to its output source.In this way, pipelines and metal reservoirs, as well as facilities such as rail infrastructure can be protected from stray current environments.

Control of corrosion of metal structures takes place by making systems work as cathodes of electrochemical cells by placing in contact with the metal to be protected another more easily corroded metal to act as the anode of the electrochemical cell.

Products on offer include:

  • Sacrificial anodes – using carbon or low-conductivity metals
  • Reference anodes for system testing
  • Transformer rectifier units and other power sourcesTesting facilities, both for stray current evaluation, system design and efficacy testing as well as permanent system facilities for system testing



SABS Codes and link to SABS Webstore:
ICS 13.310.29.050
ICS 29.120.50
ICS 29.240.20
ICS 29.240.20
IEC 62305:2006
IEC 62305-2:2006
IEC 62305-3:2006
IEC 62305-4:2006
SANS 10108
SANS 10142-1
SANS 10199
SANS 10225
SANS 10313
SANS 1063
SANS 1507
SANS 1574
SANS 61643-12
SANS 62305-1
SANS 62305-2
SANS 62305-3
SANS 62305-4
SANS 725
SANS 10121:1977 (SABS 0121)
SANS 53509:2009/EN 13509:2003
BS EN ISO 12696
BS EN 50162:2004
BN EN 50122-1
BN EN 50122-2
BN EN 50122-3
BN EN 50162:2004
SC9XC/Sec0673/CD 50122-3
IEC 60050-195

Technical & Engineering Installation of Earthing and Lightning Protection Systems