Map visualisation service (WMS) of the dataset: Restricted area of the PPRT “TOTAL RAFFINERIE DE PROVENCE” in the commune of Chateauneuf-les-Martigues — Bouches-du-Rhône

For PPRTs, the environmental code defines a single category of zones for zones (L515-15 et seq.): areas exposed to risk. Unlike natural RPPs, PPRTs never have restricted areas that are not directly exposed to risks. Depending on the hazard level, each area of the PPRT is subject to an enforceable settlement. PPRT regulations generally distinguish two types of zones: 1- “Building Prohibition Zones”, so-called “Red Zones”, when the hazard level is strong and the general rule is the construction ban; 2- “prescription zones”, known as “blue zones”, when the hazard level is average and projects are subject to requirements adapted to the type of issue. The instructions in the PPRT development guide add a gradation within the “red zones” and “blue areas”.针对PPRT，环境法典针对区域（L515-15条及后续条款）划定了单一类别：即风险暴露区域。与自然风险防护规划（RPPs）不同，PPRT从不包含未直接面临风险的限制区域。 依据危险等级的不同，PPRT的每个区域都需遵守可强制执行的处置要求。PPRT相关法规通常将区域划分为两类： 1. "建筑禁止区"，即所谓的"红色区域"：当危险等级较高时，通用规则为实施建筑施工禁令； 2. "管控要求区"，又称"蓝色区域"：当危险等级为中等时，相关项目需遵循适配问题类型的合规要求。 PPRT编制指南中的相关说明，还在"红色区域"与"蓝色区域"内部增设了分级机制。