risk exposure perimetre PPRT Nitro-Bickford

This dataset contains the boundaries at the different stages of the development of the PPRT. 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 (PM3 for PPRTs); — scope of study which corresponds to the envelope in which the hazards were studied.本数据集涵盖了PPRT在各开发阶段的边界范围。此类边界范围的核心特征为：均由官方行为所催生，并自指定日期起产生法律效力。具体如下：—— 自然型与技术型PPR审批指令中载明的规定范围；—— 与经核准RPP所规制范围相对应的风险暴露范围；该经核准的边界属于公用役权（PPRT对应PM3）；—— 对应危险源研究覆盖范围的研究范畴。