Simple download service (Atom) of the dataset: PPRN hazard zone flooding by overflow of the Charente River of the municipality of Geay in Charente-Maritime

Area exposed to one or more hazards represented on the hazard maps used for risk analysis of the RPP. Hazard maps are the result of the study of hazards whose objective is to assess the intensity of each hazard at any point in the study area. The evaluation method is specific to each hazard type. It leads to the delimitation of a set of areas on the study perimeter constituting a zoning graduated according to the level of the hazard. The allocation of a hazard level at a given point in the territory takes into account the probability of occurrence of the dangerous phenomenon and its degree of intensity. For multi-random PPRNs, each zone is usually identified on the hazard maps by a code for each hazard to which it is exposed. All hazard areas represented on the hazard maps are included. Areas protected by protective structures must be represented (possibly in a specific way) as they are always considered subject to hazard (case of breakage or inadequacy of the structure). Hazard zones can be described as developed data to the extent that they result from a synthesis using multiple sources of calculated, modelled or observed hazard data. These source data are not concerned by this class of objects but by another standard dealing with the knowledge of hazards. Some areas within the study area are considered “no or insignificant hazard zones”. These are the areas where the hazard has been studied and is nil. These areas are not included in the object class and do not have to be represented as hazard zones. However, in the case of natural RPPs, regulatory zoning may classify certain areas not exposed to hazard as prescribing areas (see definition of the PPR class).本数据集指代用于反应堆保护规程（RPP）风险分析的危害地图中所展示的、受一种或多种危害影响的区域。 危害地图是危害专项研究的成果，该研究旨在评估研究区域内任意点位的各类危害强度。评估方法因危害类型而异，最终将在研究范围内划定一系列区域，形成按危害等级分级的分区体系。对区域内特定点位的危害等级进行赋值时，需综合考量该危险现象的发生概率及其强度等级。 对于多随机PPRN，通常会通过其暴露的每种危害对应的编码，在危害地图上标识每个分区。 需完整纳入危害地图上展示的所有危害区域。受防护结构保护的区域也必须（可采用特定方式）予以标注，因为即便设有防护结构，仍可能因结构破损或功能失效而处于危害影响范围内。 危害分区可归类为衍生数据集，其生成基于多源计算、建模或观测所得危害数据的综合整合。此类源数据不属于本对象类别的范畴，而是归属于另一项针对危害认知的标准规范。 研究区域内的部分区域被认定为"无危害或危害可忽略区域"，即经研究确认无危害的区域。此类区域不属于本对象类别范畴，无需作为危害分区进行展示。但对于天然RPP而言，监管分区可能将部分未受危害影响的区域划定为强制规定区域（详见PPR类别的定义）。