331Mortar requirements—outdoor displays

331 Mortar requirements—outdoor displays (1) If a mortar is used for firing aerial shells— (a) the mortar must be suitable for the purpose; and (b) the mortar must be effectively stabilised to prevent adjacent mortars from being realigned during firing or because of any shell malfunctioning; and (c) if the shells are greater than 150mm in diameter— (i) the mortar must, if practicable, be buried to at least 2/3 of its length either in the ground, or in a container of sand; or

(ii) if it is not practicable to do so—any part of the mortar above ground must be surrounded with bags of sand to a width of at least 0.5m in all directions; and (d) the mortar must otherwise be used in accordance with the requirements of AS 2187.4. Note See AS 2187.4, s 4.4.2. (2) A mortar must not be reloaded during the conduct of a fireworks display. (3) A metal mortar must not be used for firing fireworks.