195.559—What coating material may I use for external corrosion control?
Coating material for external corrosion control under § 195.557 must—
(a)
Be designed to mitigate corrosion of the buried or submerged pipeline;
(b)
Have sufficient adhesion to the metal surface to prevent under film migration of moisture;
(c)
Be sufficiently ductile to resist cracking;
(d)
Have enough strength to resist damage due to handling and soil stress;
(e)
Support any supplemental cathodic protection; and
(f)
If the coating is an insulating type, have low moisture absorption and provide high electrical resistance.