Australian Standard 5602 for – Road tank vehicle bottom loading & vapour transfer, is now available for public comment.

The draft standard is now open for comments on the Standards Australia public comments system.

Standard: DR AS 5602:2025 Flammable liquids – Road tank vehicle bottom loading and vapour transfer
Committee: ME-057 ME-057 Road Tankers For Hazardous Liquids And Gases

Public Comments Close on the: 11/06/2025

You can view the draft with latest comments and provide your feedback using the link below: https://comment.standards.org.au/Drafts/d88ce001-89c4-446a-971b-42f9f4cb550b

Don’t miss your opportunity to have a say on the changes that have been made to this standard.

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Table of Contents

1. Draft Details
2. Amended Preface
3. 1 Scope and general
   1. Amended 1.1 Scope
   2. Deleted 1.2 Application
   3. Amended 1.2 Normative references
   4. Amended 1.3 Terms, definitions and abbreviated terms
   5. Amended 1.4 Road tank vehicles
4. 2 Product connections for loading
   1. Amended 2.1 General
   2. Amended 2.2 Adaptor specification
   3. Deleted 2.3 Coupler specifications
   4. Amended 2.3 Location of API adaptors for petroleum fuels
5. Amended 3 Vapour transfer
   1. Deleted 3.1 Scope of section
   2. Added 3.1 Transfer system
      1. Added 3.1.1 General
      2. Added 3.1.2 Where API adaptors are required for petroleum fuels
      3. Added 3.1.3 For systems where API adaptors are not required
   3. Amended 3.2 Vapour transfer adaptors and couplers for petroleum fuel loaded via API adaptors
      1. Added 3.2.1 General
      2. Added 3.2.2 Vapour transfer couplers
      3. Added 3.2.3 Vapour transfer adaptors
   4. Amended 3.3 Vapour transfer hose
   5. Added 3.4 Vapour transfer piping
   6. Added 3.5 Vapour transfer valve
6. Amended 4 Vehicle overfill prevention system
   1. Deleted 4.1 Scope of section
   2. Deleted 4.2 Tank compartment sensing element
   3. Deleted 4.3 Connection between fill stand and vehicle
   4. Added 4.1 Road tank vehicle and cargo loading facility compatibility
   5. Added 4.2 Overfill detection equipment
   6. Added 4.3 Overfill earth connection
   7. Added 4.4 Overfill sensor settings
   8. Added 4.5 Electrical requirements 
   9. Added 4.6 Tanker compartment content verification
7. Amended 5 Interlocking with the fill stand
   1. Deleted 5.1 Scope of section
   2. Deleted 5.2 Loading system interlocks
   3. Deleted 5.3 Overfill protection system
8. Deleted 6 Interlocks on the tank vehicle
9. Deleted 7 Unloading with vapour recovery
10. Deleted 8 Unloading without vapour recovery
11. Added 6 Brake interlock driveaway protection
12. Added 7 Vehicle internal valves
13. Added 8 Product recognition and crossover prevention
14. Added 9 Maintenance, inspection and testing
    1. Added 9.1 Regular inspection and maintenance intervals
    2. Added 9.2 Performance testing
15. Added Appendix A Typical cargo bottom loading facility design features
    1. Added A.1 General
16. Added Bibliography