Map visualisation service (WMS) of the dataset: Nitro-Bickford PPRT Documents

The Risk Prevention Plans (RPPs) were established by the Law of 2 February 1995 on the strengthening of environmental protection. They are the essential tool of the State in the field of risk prevention. Their objective is to control development in areas at major risk. PPRs are approved by the prefects and generally carried out by the Departmental Directorates of Territories (DDT). These plans regulate land use or land use through construction bans 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), applied in advance or approved. The PPR file contains a submission note, a regulatory zoning plan and a regulation. Other graphical documents that are useful for understanding the approach (alases, challenges, etc.) can be attached. Each PPR is spotted by a polygon that corresponds to the set of municipalities concerned with the scope of prescription when it is in the prescribed state; and the envelope of restricted zones when it is in the approved state. This geographical table makes it possible to map existing PPRTs on the department. Each PPRT document existing in the geographic table N_DOCUMENT_PPRT is linked using its GASPAR code in the format “ddd[PREF|DDT|DDTM|DREAL]aaaannnn” (AAAA and NNNN correspond to the reference year and serial number of the associated PPR procedure in GASPAR): 1. its administrative procedure for preparing (or revising) managed in the GASPAR application, on the one hand, 2. to its series of numerical constituent geographical data described by the metadata sheet N_PPRT_AAAANNNN (#0001496) on the other hand风险预防计划（Risk Prevention Plans，简称RPPs）由1995年2月2日颁布的《加强环境保护法》确立，是国家在风险预防领域的核心工具，其目标是管控高风险区域的开发活动。 该类计划（PPRs）由省督批准，通常由领土事务省局（Departmental Directorates of Territories，简称DDT）牵头实施。此类计划通过对现有或拟建建筑出台施工禁令或提出相关要求（包括施工规范、降低脆弱性工程、农业使用或作业限制等），对土地利用或土地开发活动进行规制。 此类计划可处于编制中（待批复）、预实施或已获批三种状态。 风险预防计划文件包含报审说明、管制区划图与规制文本。辅助理解该方案的其他图文资料（如附图、难点说明等）可作为附件补充。每份风险预防计划均通过多边形矢量范围进行标识：当计划处于待批复状态时，该多边形对应纳入管控范围的所有市镇的集合；当计划处于获批状态时，则对应受限区域的边界范围。 本地理数据表可用于绘制省内已存在的PPRTs空间分布图。 地理数据表N_DOCUMENT_PPRT中收录的每份PPRT文档，均通过格式为"ddd[PREF|DDT|DDTM|DREAL]aaaannnn"的GASPAR代码进行关联：其中`ddd`为地区代码，`PREF|DDT|DDTM|DREAL`为办理机构类型，`AAAA`与`NNNN`分别对应GASPAR系统中相关PPR流程的参考年份与序列编号。该关联关系分为两部分：一方面关联至其在GASPAR系统中办理的编制（或修订）行政流程，另一方面关联至由元数据表N_PPRT_AAAANNNN（#0001496）所描述的系列数值化组成地理数据。