Dataset Direct Download Service (WFS): Plan for the Prevention of Natural Risks of Field Movement — Regulatory Area — Commune of Pierreffite-sur-Seine (93059)

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 PPR encompassing perimeters (study perimeter, prescription perimeter, regulated scope); • 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 hazards to which it is exposed; • stakes (persons, property, activities, cultural or environmental heritage elements) threatened by a hazard and likely to be affected or damaged by it; • origins of risk, i.e. the real-world entity 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.风险预防计划（Risk Prevention Plans，RPPs）是政府开展风险预防工作的核心工具，其目标为管控风险区域内的开发建设活动。编制风险预防计划会生成一套空间数据（spatial data），并将其划分为若干数据集。同一份风险预防计划（原文此处为PPR，对应前文的RPPs）可包含以下几类空间数据集： • 涵盖各类边界的主风险预防计划（main PPR），包括研究边界、法定边界、管控范围； • 计划获批后的管控区域。风险预防计划的管控规则通常会区分两类区域：一是"禁建区"，即所谓的"红色区域"，此类区域风险等级较高，通用规则为禁止建设；二是"合规管控区"，即"蓝色区域"，此类区域风险等级中等，建设项目需遵循适配问题类型的管控要求，同时还包括未直接暴露于风险之下但仍需遵守禁令或管控规定的区域； • 致险区域：标注于用于风险分析的致险因子分布图上，通过与承险体（stakes）叠加分析，明确各区域所面临的风险等级； • 承险体（stakes）：即受致险因子威胁、可能遭受影响或损失的对象，包括人员、财产、生产活动、文化或环境遗产要素等； • 风险源（origins of risk）：即现实中存在、会带来潜在风险的实体。该实体可通过名称、外部对象引用或用于定位实际致险实体的地理对象进行标识。