Nature of the consequences

Here, also 'explosion' is used in a rather broad meaning, mixing together deflagration, detonation, high-pressure explosion etc. The reason is that often details are not available.

This and the followig class were created in HIAD 2.3 to consider a more complex of cosnequences, typical of esclation and/or domino effect. The useof nly explosion, when a fire was the main casue of samage, was not correct.

the definition of "Near Miss" is vague and not scientifically underpinned. In this new version of HIAD 2.1 we have adopted a very specific definition of near miss as "events which did not borught to hydrogen releases or to damages to persons or property".