5. Identification and accidental risks analysis and prevention methods—N.I.
(a)a detailed description of the possible major accident scenarios and their probability or the conditions under which they might occur including a summary of the events which may play a role in triggering each of these scenarios, the causes being internal or external to the installation; including in particular—
(i)operational causes;
(ii)external causes, such as those related to domino effects, sites that fall outside the scope of these Regulations, areas and developments that could be the source of, or increase the risk or consequences of a major accident;
(iii)natural causes, for example earthquakes or floods;
(b)an assessment of the extent and severity of the consequences of identified major accidents including maps, images or, as appropriate, equivalent descriptions, showing areas which are likely to be affected by such accidents arising from the establishment;
(c)a review of past accidents and incidents with the same substances and processes used, consideration of lessons learned from these, and explicit reference to specific measures taken to prevent such accidents;
(d)a description of technical parameters and equipment used for the safety of installations.