Simple download service (Atom) of the dataset: PPR Technological Document on the department of Bouches-du-Rhône

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 construction prohibitions or requirements on existing or future buildings (constructive provisions, vulnerability reduction work, restrictions on use or agricultural practices, etc.).These plans may be under development (prescribed), implemented in advance or approved.The PPR 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 affected municipalities within 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 mapping existing PPRTs on the department. Each PPRT document existing in the N_DOCUMENT_PPRT 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 order number of the associated PPR procedure in GASPAR): 1. its administrative procedure for the preparation (or revision) managed in the GASPAR application, on the one hand, 2. its set of numerical spatial constituent data described by the metadata sheet N_PPRT_AAAANNNN (#0001496) on the other hand.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的开发活动进行监测。PPR由省长批准，通常由省领地事务总局（departmental directorates of the territories，DDT）牵头实施。此类计划通过对现有或拟建建筑设置施工禁令或提出合规要求，对土地使用进行规制，具体涵盖施工规范、脆弱性降低工程、使用限制或农业生产规范等内容。此类计划可处于编制（待核定）、预实施或已获批三种状态。 PPR档案包含编制说明、规制性分区规划及相关规制文本。其他有助于理解该规划方案的图示资料（如风险隐患、相关问题等材料）可作为附件补充。 每份PPR以多边形矢量边界进行标识：若处于待核定状态，该多边形对应规制范围内受影响的全部市镇集合；若处于获批状态，则对应受限区域的范围包络线。 此地理数据表可实现省内现有PPRT（PPRT）的空间制图。存储于N_DOCUMENT_PPRT地理数据表中的每份PPRT文档，均与格式为"ddd[PREF|DDT|DDTM|DREAL]aaaannnn"的GASPAR编码相关联，其中AAAA与NNNN分别对应GASPAR系统中关联PPR流程的参考年份与序号：其一为在GASPAR系统中管理的PPR编制（或修订）行政流程，其二为由元数据表N_PPRT_AAAANNNN（#0001496）所描述的数值空间组成数据集。