Drencher Systems

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.

The following is a part extract of clause I1.1 for an Essential Safety Measure (as appeared in BCA 2013) known as drencher systems:

Table I1.1 SAFETY MEASURES – FIRE FIGHTING SERVICES AND EQUIPMENT

Safety Measures BCA Provision for Determining Standard of Performance
Wall-wetting sprinklers (including doors and windows required in conjunction with wall wetting sprinklers) C3.4, C3.8, C3.11,
D1.7, D1.8, G3.8

Essential Safety Measures Audit – Drencher Systems

An essential safety measures determination/ schedule will nominate drencher systems as an essential safety measure. An auditor should check the system and report any drencher systems deficiencies in the building’s essential safety measures logbook to allow for signing the Annual Statement, Annual Certificate of Compliance, Annual Fire Safety Statement, Annual Maintenance Statement and Annual Occupiers Statement.