Map Viewing Service (WMS) of the dataset: Perimeter of PPRN (PPRI de la Vée) in the department of Orne

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:- prescribed perimeter set out in the Prescribing Order of a PPR (natural or technological);- scope of exposure to risks 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 that corresponds to the envelope in which the hazards were studied.

本数据集收录了PPRN开发各阶段的边界范围。此类边界的特征为：由官方行为所产生，且自指定日期起生效。具体包含以下三类：
1. 由PPR（自然类或技术类）划定令所载明的法定边界；
2. 与经核准的RPP所规制的风险暴露范围相匹配的风险暴露范围，该经核准的边界为公用役地（PPRN对应PM1，PPRT对应PM3）；
3. 与危害研究所覆盖的范围相一致的研究范围。