This Standard sets out general requirements for the design, installation and maintenance ofwater spray systems intended to provide a degree of building protection against bushfireexposure, including ember attack, together with limited protection against radiant heatexposure [up to 19 kW/m2(BAL 19)]. Bushfire water spray systems are intended tocomplement the requirements of AS 3959, and should be considered as one component of aholistic fire management plan.NOTE: For further guidance see Appendix B of this Standard and the site assessment aspects ofAS 3959.It is recognized that installation of a bushfire water spray system is to be preceded by someform of on-site evaluation by a qualified bushfire assessment practitioner. In such cases it isrecommended that the practitioner witness the system commissioning test and countersignthe completion certificate.NOTE: Where required, a copy of the completion certificate should be forwarded to the localgovernment authority and the fire service concerned.Bushfire water spray systems may be used for protection against bushfire ember attack onBCA Class 1a, 1b, 2, 3 and 9c buildings, particularly existing buildings which are not fullycompliant with the requirements of AS 3959.