Map Viewing Service (WMS) of the dataset: Natural Movement Risk Prevention Plan — Regulated Area- Nanterre Municipality (92050)

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，其目标为管控风险高发区域的开发活动。编制风险预防计划将生成一系列空间数据，并被划分为多个数据集。
单份风险预防计划所包含的空间数据集通常涵盖以下类别：
• 涵盖各类范围的主风险预防计划（含研究范围、法定规制范围、监管适用范畴）；
• 经批准后的计划限制区域。风险预防计划的规制条款通常将区域划分为三类：其一为"禁止建设区"，俗称"红色区域"，此类区域风险等级较高，通用规则为禁止建设；其二为"附条件建设区"，又称"蓝色区域"，此类区域风险等级中等，项目需结合问题类型适配相关规制要求；其三为未直接暴露于风险之中，但仍受禁令或规制约束的区域；
• 灾害风险区：即绘制于灾害分析地图上、用于风险分析的区域，通过与承灾体叠加分析确定，需明确标注各区域所承受的灾害风险等级；
• 承灾体：即受灾害威胁、可能因灾害遭受影响或损失的人员、财产、活动场所及文化或环境遗产要素；
• 风险源：即现实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定位实际风险源的地理对象进行表征。