The Building Code of Australia allows drencher systems to be installed to provide fire protection to walls or openings in a wall in the event of a fire. A drencher systems can be used internally or externally and would be nominated as an essential safety measure by the building surveyor/ building certifier.
Building Code of Australia
Part G3 Protection of Openings, clause C3.4 Acceptable methods of protection, nominates the use of drencher systems under a building permit. No specific Australian Standard is referenced in the BCA relative to the installation of drencher systems. Building surveyors require designers to refer to AS 2118.2-2010 Automatic fire sprinkler systems – Drencher systems, for guidance.
The following illustration depicts an external drencher systems over a vent opening.