List of Natural Risk Prevention (PPRN) plans on the department — Tarn

DATASET USED FOR A GEOIDE CARD

The Risk Prevention Plans (PPR) were established by the Act of 2 February 1995 on strengthening the protection of the environment. They are the key instrument of the State in the field of risk prevention. Their objective is to monitor development in areas exposed to a major risk.
The PPRs are approved by the prefects and generally carried out by the departmental directorates of the territories (DDT). These plans regulate land use or land use through building prohibitions or requirements on existing or future buildings (constructive provisions, vulnerability reduction work, restrictions on agricultural use or practices, etc.).
These plans may be under development (prescribed), implemented in advance or approved.
The RPP file contains a presentation note, a regulatory zoning plan and a regulation. Other graphic documents that are useful for understanding the approach (e.g. hazards, issues, etc.) can be attached. Each PPR is identified by a polygon that corresponds to the set of municipalities
the scope of the prescription when it is in the prescribed state; and the envelope of restricted areas when it is in the approved state.
This geographical table allows to map existing PPRNs on the department.
Each PPRN document in the N_DOCUMENT_PPRN geographical table is linked with its GASPAR code in the format “ddd[PREF|DDT|DDTM|DREAL]aaaannnn” (AAAA and NNNN correspond to the reference year and the order number of the associated PPR procedure in GASPAR):
1. its administrative procedure for drawing up (or revising) managed in the GASPAR application, on the one hand,
2. its set of numeric spatial data as described in the metadata sheet N_PPRN_AAAANNNN (#0001495).
There are no MULTIRISKs in TARN.

This layer is associated with the departmental layer of PPRN regulatory zoning:
N_ZONE_REG_PPRN_S_081

用于大地水准面卡（Geoide Card）的数据集

风险预防计划（Risk Prevention Plans，PPR）由《1995年2月2日加强环境保护法案》正式确立，是国家开展风险预防工作的核心治理工具，其核心目标为对重大风险暴露区域的开发活动实施动态监测。

PPR由省长批准，通常由领土事务省局（Direction Départementale des Territoires，DDT）牵头实施。此类计划通过对现有或拟建建筑设定建设禁令、合规要求（含建设性条款、减灾工程、农业使用限制或作业规范等），实现土地利用与开发行为的规范管控。

此类计划可分为三种状态：处于编制指令阶段、预实施阶段，或已获批阶段。

PPR文件包含说明性报告、监管分区图及监管条例，亦可附加有助于理解该方案的其他图示资料（如风险分布图、核心问题梳理图等）。每份PPR通过对应多边形进行标识：若处于编制指令状态，该多边形对应指令覆盖的全部市镇范围；若处于获批状态，则对应受限区域的边界范围。

本地理数据表可实现省内现有PPRN的空间制图。N_DOCUMENT_PPRN地理数据表中的每份PPRN文档，均通过格式为`ddd[PREF|DDT|DDTM|DREAL]aaaannnn`的加斯帕尔（GASPAR）编码实现关联，具体关联两类信息：1. 其在GASPAR系统中管理的编制（或修订）行政流程；2. 其配套的数值空间数据集，相关详情可查阅元数据表N_PPRN_AAAANNNN（编号#0001495）。

塔恩省（TARN）未包含多风险场景数据。

本图层与PPRN监管分区的省域图层N_ZONE_REG_PPRN_S_081相关联。