Determine whether your installation is subject to the declaration system
Verify its classification under the declaration regime

There are three main grading regimes, from the least severe to the most severe:

• D for facilities subject to declaration and, within this regime, DC for facilities subject to declaration and periodic inspection;

• E for facilities subject to registration ;

• A for facilities subject to environmental authorization and, within this regime, Seveso for the most dangerous facilities.

In this case, if at least one of the installations is subject to declaration, and none of them...