21/30423523 DC

This standard 21/30423523 DC BS EN 15112. External cathodic protection of well casings is classified in these ICS categories:

• 23.040.99 Other pipeline components
• 77.060 Corrosion of metals

This document specifies methods used to evaluate the external corrosion hazards of well casings, as well as cathodic protection means and devices to be implemented in order to prevent corrosion of the external part of these wells in contact with the soil. This document applies to any gas, oil or water well with metallic casing, whether cemented or not. However, in special conditions (shallow casings: e.g. 50 m, and homogeneous soil), EN 12954 can be used to achieve the cathodic protection and assess its efficiency.