Plan for the prevention of natural risks of field movement — Commune of Brassac — Document — Department of Tarn-et-Garonne

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).

风险预防计划 (Risk Prevention Plans, PPR) 由1995年2月2日颁布的《加强环境保护法案》确立，是国家在风险预防领域的核心治理工具，其目标为对存在重大风险的区域开发活动进行监测。

PPR由省长审批，通常由领土事务总局 (DDT) 牵头实施。此类计划通过对既有及新建建筑设定建设禁令或相关要求（包括建设条款、减灾工程、农业用途或作业限制等），对土地使用进行管控。

此类计划可处于拟定 (prescribed)、预实施或获批三种状态。

PPR文件包含说明文档、管控分区规划及管控条例。其他有助于理解该计划的图文资料（如风险点位、相关问题等）可作为附件附加。每个PPR通过多边形进行标识：当计划处于拟定状态时，该多边形对应覆盖的市镇集合及管控范围；当处于获批状态时，则对应受限区域的边界包络线。

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，均与其格式为"ddd[PREF|DDT|DDTM|DREAL]aaaannnn"的加斯帕尔编码 (GASPAR code) 相关联，其中AAAA与NNNN分别对应GASPAR系统中关联PPR流程的参考年份及序号。具体关联内容包括两部分：一是在GASPAR系统中管理的PPR拟定（或修订）行政流程；二是元数据表N_PPRN_AAAANNNN（编号#0001495）中描述的数值空间数据集集合。