Division 3 Arrangements shall include provisions for responding to a major accident that potentially overwhelms the Member State or exceeds its boundaries by:

sharing external emergency response plans with adjacent Member States and the Commission;

compiling at cross-border level the inventories of response assets, both industry and publicly owned and all necessary adaptations to make equipment and procedures compatible between adjacent countries and Member States;

procedures for invoking the Union Civil Protection Mechanism;

arranging transboundary exercises of external emergency response.