1. How to exclude a hazardous event from a PPRT?

The accumulation of risks is based on the hazardous phenomena identified in the hazard study. Based on all the hazardous phenomena with off-site effects, the industrialists must propose a list of phenomena to be included in the PPRT. This list is then submitted to the Administration for review. Regulations offer the possibility of excluding certain hazardous phenomena by applying exclusion rules. Insofar as the hazardous phenomena that can be excluded generally correspond to major accident scenarios, the authorities take great care to ensure that the criteria to be verified are indeed met.

Having identified all hazardous phenomena with effects that go beyond the plant's boundaries, operators must refer to circulaire du 10 mai 2010 to justify...