Standard
Track updates
AS 2746:2025
[Current]AS 2746:2025 provides constructors, installers, servicing personnel and regulators with the requirements for working areas for gas-fuelled vehicles such that work on the vehicles is performed safely
Published: 26/09/2025
Pages: 54
Table of contents
Cited references
Content history
Table of contents
Header
About this publication
Preface
Introduction
1 Scope and general
1.1 Scope
1.2 Normative references
1.3 Terms and definitions
1.4 New designs and innovations
2 General service working areas
2.1 Application
2.2 Premises
2.3 Prevention of overheating
3 Gas leakage procedures
3.1 Application
3.2 Procedures
3.2.1 Known or suspected gas escape
3.2.2 Damaged vehicles
4 Specialist gas working areas — LP Gas
4.1 Application
4.2 Personnel
4.3 Equipment
4.4 Premises
4.5 Ventilation
4.6 Increased hazard
4.7 Work on the container and fittings
4.8 Work on the gas fuel system
4.9 Fuel unloading
4.10 Container purging
4.11 Purging into service
4.12 Storage of unpurged containers
4.13 Decommissioning and scrapping
4.13.1 Vehicles
4.13.2 Containers
5 Specialist gas working areas — CNG and LNG
5.1 Application
5.2 Personnel
5.3 Equipment
5.4 Premises
5.5 Ventilation
5.6 Increased hazard
5.7 Work on the container and fittings
5.8 Work on the gas fuel system
5.9 Fuel unloading
5.10 Storage of unpurged containers
5.11 Decommissioning and scrapping
5.11.1 Vehicles
5.11.2 Containers
6 Compressed hydrogen gas and liquified hydrogen
6.1 Application
6.2 Personnel
6.3 Equipment
6.4 Premises
6.5 Ventilation
6.6 Increased hazard
6.7 Work on the container and fittings
6.8 Work on the gas fuel system
6.9 Fuel unloading
6.10 Storage of unpurged containers
6.11 Decommissioning and scrapping
6.11.1 Vehicles
6.11.2 Containers
7 Fire safety
7.1 General
7.2 Integration with existing facilities
7.2.1 General
7.2.2 Variations to requirements
7.2.3 Location
7.3 Hose reels
7.4 Fire extinguishers
7.4.1 General
7.4.2 Extinguisher location
7.4.3 Extinguisher location signs
7.4.3.1 Sign size
7.4.3.2 Location signs
7.4.3.3 Sign location
7.4.3.4 Mounting height
7.4.3.5 Visibility
7.4.3.6 Support
7.5 Training
Appendix A
Appendix B
Appendix C
C.1 Introduction
C.2 Decanting
C.2.1 Description
C.2.2 Precautions
C.2.3 Equipment
C.2.4 Procedure
C.3 Flaring
C.3.1 Description
C.3.2 Precautions
C.3.3 Equipment
C.3.4 Procedure
C.4 Pumping out
C.4.1 Description
C.4.2 Compression method
C.4.3 Applied pressure method
C.5 Venting
C.5.1 General
C.5.2 Description
C.5.3 Precautions
Appendix D
D.1 Introduction
D.2 Flaring
D.2.1 Description
D.2.2 Precautions
D.2.3 Equipment
D.2.4 Procedure
D.3 Venting to atmosphere
D.3.1 General
D.3.2 Precautions
D.3.3 Equipment
D.3.4 Procedure
Appendix E
E.1 Introduction
E.2 Decanting
E.2.1 Description
E.2.2 Precautions
E.2.3 Equipment
E.2.4 Procedure
E.3 Pumping out
E.3.1 Description
E.3.2 Applied pressure method
E.4 Flaring
E.4.1 Description
E.4.2 Precautions for flaring
E.4.3 Equipment
E.4.4 Procedure
E.5 Venting to atmosphere
E.5.1 General
E.5.2 Precautions
E.5.3 Equipment
E.5.4 Procedure
Appendix F
F.1 Introduction
F.2 Flaring
F.2.1 Description
F.2.2 Precautions
F.2.3 Equipment
F.2.4 Procedure
F.3 Venting to atmosphere
F.3.1 General
F.3.2 Precautions
F.3.3 Equipment
F.3.4 Procedure
Appendix G
G.1 Introduction
G.2 Decanting
G.2.1 Description
G.2.2 Precautions
G.2.3 Equipment
G.2.4 Procedure
G.3 Pumping out
G.3.1 Description
G.3.2 Applied pressure method
G.4 Flaring
G.4.1 Description
G.4.2 Precautions for flaring
G.4.3 Equipment
G.4.4 Procedure
G.5 Venting to atmosphere
G.5.1 General
G.5.2 Precautions
G.5.3 Equipment
G.5.4 Procedure
Appendix H
H.1 General
H.2 Caution
H.3 CNG vehicle emergency scenarios
H.3.1 Case 1: Where there is an obvious gas release but no fire
H.3.2 Case 2: A CNG vehicle fire which does not involve the gas or CNG fuel containers
H.3.3 Case 3: CNG engine compartment fire
H.3.4 Case 4: Vehicle fire fed by venting natural gas
Appendix I
I.1 General
I.2 Caution
I.3 Emergency scenarios
I.3.1 General small fires
I.3.2 Spills
I.3.3 Major fire or explosion hazard
I.4 First aid for LP Gas cryogenic burns
I.4.1 General
I.4.2 Immediate treatment
Appendix J
J.1 Hazards
J.1.1 General
J.1.2 Eyes
J.1.3 Skin
J.1.4 Breathing natural gas vapour
J.2 Caution
J.3 Emergency scenarios
J.3.1 General
J.3.2 Fire and explosion hazards
J.3.3 Extinguishing a fire
J.3.4 Firefighting instructions
J.4 LNG vehicle emergency procedures
Appendix K
K.1 Hazards
K.1.1 General
K.1.2 Eyes
K.1.3 Skin
K.1.4 Breathing hydrogen gas vapour
K.2 Caution
K.3 Emergency scenarios
K.3.1 General
K.3.2 Fire and explosion hazards
K.3.3 Extinguishing a fire
K.3.4 Firefighting instructions
K.4 LH2 vehicle emergency procedures
Bibliography
Cited references in this standard
[Current]
The use of ventilation and airconditioning in buildings, Part 2: Mechanical ventilation in buildings
[Current]
Gas cylinder test stations, Part 1: General requirements, inspection and tests — Gas cylinders
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