1. Various reminders

1.1 Durability

The period during which the protection provided by paint systems is effective is generally shorter than the service life of the structure in question. However, depending on ambient corrosivity and the nature of the systems used, this period can extend to several decades.

The standard ISO 12944 The "Anticorrosion of Steel Structures by Paint Systems" document specifies that durability is a technical concept that can help the client to draw up a maintenance program. Appropriate attention must be paid, during the study and design phase, to the possibility of maintaining or renewing these systems.

The level of coating failure, prior to the first major...