Comparison of national “safety distances” at professionally fired firework displays and distances derived from ShellCalc©

Tom Smith & Christian Lohrer

Abstract: There is a wide variety of approaches across the world in determining appropriate “safety distances” for firework displays. Comparison of the different national approaches and distances for shells derived from ShellCalc© highlights the variety and derivation of the “safety distances” adopted and these distances are related to the various failure modes of shells that may affect the audience. It is not intended that this paper should encourage the maximum distances derived always to be adopted, but that an appreciation of the probabilities and hazards of various accident scenarios and therefore the risks involved be part of the decision making process for designers and commissioners of displays as well as enforcing authorities.

Ref: JPyro, Issue 33, 2014, pp53-63 (J33-53)

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