Simple download service (Atom) of the dataset: Perimeters of the PPRN cavities of Châtellerault

This dataset contains the boundaries at the different stages of the development of the PPRN. The characteristic of these perimeters is to be the consequence of an official act and to produce their effects from a specified date.This is the following:
— prescribed scope contained in the prescription order of a PPR (natural or technological);
— scope of risk exposure that corresponds to the scope regulated by the approved RPP. This approved perimeter is a utility easement (PM1 for PPRNs and PM3 for PPRTs);

— scope of study which corresponds to the envelope in which the hazards were studied.

本数据集收录了PPRN（PPRN）开发各阶段的边界范围。此类边界的核心特征为：均由法定行为产生，并自指定日期起生效。具体如下：
— 自然类与技术类PPR（PPR）审批指令中载明的规定范围；
— 与经批准的RPP（RPP）所规制范围相对应的风险暴露范围；该经核准的边界为公用役权（PPRN对应PM1（PM1），PPRT（PPRT）对应PM3（PM3））；
— 对应灾害研究覆盖范畴的研究范围。