In France, two years after the catastrophic industrial accident of Toulouse, a new law was introduced on July 30, 2003 which created the Technological Risk Prevention Plan (PPRT in French, standing for Plan de Prévention des Risques Technologiques). The aim of the PPRT is to protect people by action on the existing urbanization and by controlling the future land-use planning in the vicinity of the existing upper-tier SEVESO establishments.
Each PPRT imposes rules of land-use, use and exploitation of buildings and activities, in a differentiated zoning according to the potential hazards: red zones (dark then clear) in the immediate proximity of the dangerous installations, and blue zones (dark then clear) further away from the danger.
This article presents a methodology (5 main stages) to help the activities concerned by a PPRT (more particularly those located in the blue zoning) to implement and optimize their protection.
Since the publication of the document presenting the methodology (Résiguide) (Favre D. et al, 2017), first cases of application have been made. The article will be an opportunity to highlight the positive aspects of the proposed methodology and the difficulties encountered.