AS 1894-1997

Abstract

Sets out requirements and recommendations for the storage and handling non-flammable cryogenic liquids at temperatures below minus 90°C and non-flammable refrigerated liquids at or below minus 15°C which are classified as Class 2.2 in the ADG Code. Special requirements for the storage and handling of liquefied oxygen, nitrous oxide, nitrogen, argon, helium and carbon dioxide are provided. The properties and hazards of these liquids, precautions for their handling and an outline of first aid procedures are discussed.

Scope

This Standard sets out requirements and recommendations for the storage and handling of non-flammable cryogenic liquids at temperatures below -90¦C and refrigerated liquids at or below -15¦C, of Class 2.2, in quantities of at least 50 L water capacity and 50 kPa (gauge) working pressure, up to and including 200 000 L water capacity. It also provides guidelines for temporary installations.

Although carbon dioxide and nitrous oxide are not true cryogenic liquids, they are covered by this Standard. Refrigerant gases that have a halogenated hydrocarbon component are not intended to be covered by this Standard.

NOTES: The properties of low-temperature liquefiable gases covered by this Standard are outlined in Appendix A.

This Standard does not address the detailed design of vessels or equipment used for the production, transport and storage of cryogenic and refrigerated liquids, nor the precautions and equipment that might be necessary in large-scale production and processing plants.

NOTES:
1 Advice supplementary to that provided in this Standard might need to be sought from the supplier of the goods.
2 A discussion of the hazards presented by cryogenic and refrigerated liquids is provided in Appendix B.

The transport of cryogenic and refrigerated liquids is covered by the ADG Code. Requirements for road tankers for cryogenic liquids are addressed in AS 2809.6.

General Product Information

Published
Document Type	Standard
Status	Current
Publisher	Standards Australia
ProductNote	Pending Revision indicates that as a result of the Aged Standards review process, the document needs updating. If no project proposal, meeting the quality criteria, is received within the 12 month timeframe, the document shall be withdrawn.
Pages
ISBN
Committee	CH-009
Supersedes	AS 1894-1976 DR 98302 CP