Simple download service (Atom) of the data package: Natural Hazard Prevention Plan GRAND LYON: SAONE

Risk Prevention Plans (RPPs) are the key government instrument for risk prevention. Their objective is to control development in areas at risk.
The development of a risk prevention plan generates a set of spatial data organised into several data sets. The same PPR may include spatial datasets containing:
— main scopes of the RPP;
— restricted areas of the plan once approved. RPP regulations generally distinguish between ‘construction ban areas’, so-called ‘red areas’, where the hazard level is high and where the general rule is the construction ban; ‘areas subject to requirements’, known as ‘blue zones’ where the hazard level is medium and projects are subject to requirements adapted to the type of issue and areas not directly exposed to risks but subject to prohibitions or prescriptions;
— hazard areas represented on the map of hazards used for risk analysis by crossing with the stakes, specifying for each zone the level of the hazards to which it is exposed;
— issues which are persons, property, activities and elements of cultural or environmental heritage threatened by a hazard and likely to be affected or damaged by it;
— origins of risk, i.e. the entity of the real world which, through its presence, represents a potential risk. This entity may be characterised by a name, a reference to an external object or a geographical object that locates the actual entity causing the risk.

Each element in the same PPRN dataset is bound by the GASPAR format identifier “ddd[PREF|DDT|DDT|DREAL]aaaannnn” (AAAA and NNNN correspond to the reference year and the order number of the PPR procedure associated in GASPAR) to a single object in the PPRN document table described by the N_DOCUMENT_PPRN metadata sheet.

风险预防计划（Risk Prevention Plans, RPPs）是政府开展风险防控的核心工具，其目标为管控风险区域内的开发活动。
风险预防计划的编制将生成一系列空间数据，并被划分为若干数据集。同一PPR可包含以下空间数据集：
— 风险预防计划的核心管控范围；
— 获批后的计划限制区域。RPP相关法规通常会对两类区域作出明确区分：其一为“禁建区”（即所谓“红色区域”），此类区域灾害等级较高，通用规则为禁止任何建设活动；其二为“合规管控区”（又称“蓝色区域”），此类区域灾害等级为中等，开发项目需遵循适配问题类型的管控要求，此外还涵盖未直接暴露于风险但仍受禁令或规定约束的区域；
— 用于风险分析的灾害分布图中标注的灾害风险区域：该分布图通过与受影响点位进行叠加分析生成，并明确了每个区域所承受的灾害等级；
— 承灾对象：即受灾害威胁、可能遭受影响或损毁的人员、财产、活动以及文化或环境遗产要素；
— 风险源：即现实世界中因自身存在而构成潜在风险的实体。该实体可通过名称、外部对象引用，或用于精准定位引发风险的实际实体的地理对象来进行表征。
同一PPRN数据集中的每个元素均通过GASPAR格式标识符“ddd[PREF|DDT|DDT|DREAL]aaaannnn”（其中AAAA与NNNN分别对应参考年份及GASPAR系统中关联的RPP程序的序号），与由N_DOCUMENT_PPRN元数据表所描述的PPRN文档表中的单个对象完成绑定。