How does the PPI fit in with the POI?
Distinguishing between POI and PPI

Even if your ICPE does not fall within the scope of the PPI, if it is located within the danger circle of an installation subject to the PPI and presents a possible increase in risks or damage ("domino effect"), you may be concerned.

The prefect may then ask you to provide certain information, within three months of notification by the various operators of the existence of a domino effect (interactive major accident process), or within the timeframe imposed by the prefect for specific requests (see arrêté...