Lay Aval PPRI — Origin of the Risk of Predictable Natural Risks Plan — Vendée

The origin of the risk characterises the real-world entity which, through its presence, represents a potential risk. This origin may be characterised by a name and, in some cases, a geographical object locating the actual entity causing the risk. The location of the entity and the knowledge of the dangerous phenomenon are used to define the risk pools, the risk-exposed areas that underpin the RPPi. For the PPRi, this class corresponds to the river.风险源指代一类现实世界实体：该实体一旦存在，便会构成潜在风险。该风险源可通过名称进行标识，部分场景下还可通过定位该风险实际载体的地理对象来补充描述。实体的位置与危险现象的相关知识，可用于定义风险池（risk pools）——即支撑RPPi的风险暴露区域。 针对PPRi而言，该类别对应的实体为河流。