Criteria for the selection of extinguishers are based on extinguisher classification. The requirements for the location and distribution of extinguishers take account of extinguisher classification and rating, travel distance and floor area and hazard classification.

For some time it has been a requirement that portable fire extinguishers carry a classification and rating which indicates the size of fire against which the extinguisher has been successfully tested.

Certain regulations require fire extinguishers to comply with the relevant Australian Standard. In a number of areas, regulations nominate extinguishers of specific types and sizes for certain applications. In other circumstances, building configuration or occupancy may preclude adherence to travel distances specified in the Standard. In this event, the extinguishers may require to be grouped in banks at appropriate intervals and locations, e.g. hydrant points.

It should be noted that extinguishers with body-stamped dates from 1976 to 1981 (inclusive) may be found to be labelled with either a C or (E) classification denoting suitability for use on electrical hazards, e.g. 2A:10B:C. Such extinguishers were produced to comply with earlier editions of AS 1850, and may be selected and located in accordance with this Standard.

With the introduction of a C classification for fires involving flammable gases, these extinguishers should be relabelled to prevent confusion.

This Standard also includes a section on the selection and location of fire blankets manufactured to the requirements of AS/NZS 3504, Fire blankets.

The term ‘informative’ has been used in this Standard to define the application of the appendix to which it applies. An ‘informative’ appendix is only for information and guidance.

Originated as MP 26-1972 and AS2444-1981. Previous edition AS 2444-1995. Reconfirmed: 2021-06-03.