5. Any unintentional—
(a)fire, explosion or ignition at a site where the manufacture or storage of explosives requires a licence [F1under regulations 6 or 7 of the Explosives Regulations 2014]; or
(b)explosion or ignition of explosives (unless caused by the unintentional discharge of a weapon, where, apart from that unintentional discharge, the weapon and explosives functioned as they were designed to),
except where a fail-safe device or safe system of work prevented any person being endangered as a result of the fire, explosion or ignition.
Textual Amendments
F1Words in Sch. 2 para. 5(a) substituted (1.10.2014) by The Explosives Regulations 2014 (S.I. 2014/1638), reg. 1(1), Sch. 13 para. 31(b)