Map Viewing Service (WMS) of the dataset: Scope of the natural risk prevention plan (PPRN) of the municipality of USTOU

This dataset contains the boundaries according to the stage of development of the PPRN. The characteristic of a perimeter is to be the consequence of an official act and to produce its effects from a specified date. This may include: — 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各开发阶段对应的边界范围。 管控范围（perimeter）的核心属性为：由官方行为所创设，并自指定日期起产生法律效力。具体涵盖以下三类： — PPR（天然类或技术类）批复文件中载明的法定范围； — 对应经审批RPP所规制范围的风险暴露范围。该经审批的管控范围即为公用事业役权（PPRN对应PM1，PPRT对应PM3）； — 与危险源研究所覆盖的包络范围对应的研究范围。