Sets out requirements and recommendations for the safe storage and handling of flammable solids, substances liable to spontaneous combustion, and substances that in contact with water emit flammable gases, i.e. dangerous goods that- 
(a) in Australia, are classified as Division 4.1, 4.2 or 4.3 in the Australian Dangerous Goods Code (ADG Code); and 
(b) in New Zealand, meet the 4.1, 4.2 or 4.3 classification criteria of the Hazardous Substances and New Organisms Act, 1996, referred to as 'the HSNO Act'. 

The Standard also applies to other dangerous goods that are assigned Division 4.1, 4.2 or 4.3 subsidiary risks by the ADG Code, except where more stringent requirements apply under another relevant Standard or regulation.