Data batch direct download service (WFS): [DDMT 76] PPRT (Technological Risk Protection Perimeter) of the Seine-Maritime Department

For PPRTs, the environmental code defines a single category of zones for zones (L515-15 et seq.): areas at risk. Unlike natural RPPs, PPRTs never have restricted areas that are not directly exposed to risk. Depending on the hazard level, each TRPP area is subject to an enforceable settlement. The PPRT regulations generally distinguish two types of zones: 1- ‘Building prohibited areas’, known as ‘red areas’, where the hazard level is high and the general rule is the prohibition on construction; 2- ‘prescribed areas’, known as ‘blue zones’, where the hazard level is average and the 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 zones”.对于PPRT（PPRT），环境法典针对L515-15条及后续条款所涵盖的各类区域，划定了单一类别区域——风险区域。与天然RPP（RPP）不同，PPRT从不设置未直接暴露于风险中的限制区域。 根据危险等级的不同，每个TRPP（TRPP）区域均需遵循具有强制执行力的管控要求。PPRT相关法规通常将区域划分为两类： 1. 禁止建设区（俗称"红区"）：该区域危险等级较高，通用规则为禁止开展任何建设活动； 2. 指定管控区（俗称"蓝区"）：该区域危险等级为中等，区内建设项目需遵循适配于具体风险类型的管控要求。 PPRT编制指南中的相关说明，进一步在"红区"与"蓝区"内部增设了分级划分。