AS/NZS 2430.3.3:2004

This Standard provides examples of area classification for areas associated with the production, processing, handling, transferring and storage of flammable liquids.

This Standard provides examples of area classification for areas associated with the production, processing, handling, transferring and storage of flammable liquids. It is part of the AS/NZS 2430.3 series, which recommends the classification of several commonly occurring situations and should be read in conjunction with AS/NZS 2430.3.1. This Standard also addresses flammable vapours from non-flammable liquids (combustible liquids), and associated equipment other than the process equipment such as pits, waste collection facilities and ventilation air ducts. NOTE: Combustible liquids that are stored, handled or processed at a temperature T = FP -6°C (where FP = flashpoint of the liquid) should be considered as flammable liquids. Zonal distances for such liquids should be determined in accordance with this Standard unless a detailed classification in accordance with AS/NZS 60079.10 indicates otherwise. The classifications given in this Standard are not representative examples of the storage and use of flammable liquids for quantities up to— (a) 100 L in closed containers; (b) 25 L for decanting purposes, e.g. petrol transfer to a motor vehicle or lawn mower; (c) 5 L in open containers for occasional use; or (d) 1 L in open container for continuous use. NOTE: Under some circumstances, particularly in confined spaces, caution should be taken with small quantities of flammable liquids as these may give rise to hazardous areas. For surface coatings and adhesives reference should be made to AS/NZS 2430.3.8 and for flammable liquids (and gases) in refineries and major processing plants reference should made to AS/NZS 2430.3.5, which uses the Generalized Method of classification. NOTE: The classifications given in this Standard are based on the assumption that the installations are carried out in accordance with the relevant requirements of the authority having jurisdiction (refer to Scope of AS/NZS 2430.3.1).

First published in Australia rt as part of AS 1076.2-1977.
AS 2430.1 first published 1981.
AS 1076.2-1977 and AS 2430.1-1981 revised, amalgamated and designated AS 2430.1-1982.
AS 2430.1-1982 revised and redesignated in part as AS 2430.3-1987.
Second edition 1991.
First published in New Zealand as part of NZS 6101P:1972.
Revised and redesignated in part as NZS 6101.3:1991.
AS 2430.3-1991 and NZS 6101.3:1991 revised, amalgamated and redesignated in part as AS 2430.3.3:1997.
Second edition 2004.