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AS/NZS 2739:2009

[Pending Revision]

Natural gas (NG) fuel systems for vehicle engines

Specifies requirements for natural gas (NG) fuel systems for engines mounted on motor vehicles and provides requirements for the design and construction of component parts.
Published: 16/03/2009
Pages: 58
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Table of contents
Cited references
Content history
Table of contents
Header
About this publication
PREFACE
1 SCOPE AND GENERAL
1.1 SCOPE
1.2 OBJECTIVE
1.3 REFERENCED DOCUMENTS
1.4 DEFINITIONS
1.5 NEW DESIGNS AND INNOVATIONS
1.6 VEHICLE MODIFICATIONS
1.7 IMPACT ON VEHICLE LOADING
1.8 ENGINE MANAGEMENT SYSTEM ALTERATIONS
1.8.1 General
1.8.2 Additional requirements for Australia only
1.9 APPROVED EQUIPMENT
1.10 PREVIOUSLY USED EQUIPMENT
1.10.1 Provisions
1.10.2 Prohibitions
1.11 WORKING AREA AND SAFE PRACTICES
2 COMPONENTS
2.1 GENERAL SUITABILITY
2.1.1 General
2.1.2 Suitability for pressure
2.1.3 Suitability for installation
2.2 COMPONENT PARTS
2.3 MODIFICATION
3 CNG CONTAINER AND FUEL SYSTEM COMPONENTS
3.1 APPLICATION
3.1.1 General
3.1.2 Fuel supply system components
3.1.3 Use of multiple components
3.2 CONTAINER
3.2.1 General
3.2.2 Container identity and type
3.2.3 Use of removable containers
3.2.4 Container painting
3.3 COMPONENTS FOR REMOVABLE CONTAINERS
3.4 CONTAINER VALVE
3.5 REFUELLING CONNECTION
3.5.1 Design of connection
3.5.2 Dust cap
3.5.3 Refuelling interlock device (New Zealand only)
3.6 REFUELLING NON-RETURN VALVE
3.7 LOCATION OF REFUELLING RECEPTACLE
3.8 REFUELLING INFORMATION PLATE
3.9 SERVICE ISOLATION VALVE
3.10 FUEL FILTER
3.11 AUTOMATIC FUEL SHUT-OFF DEVICE
3.12 FUEL FLOW REGULATION DEVICE
3.13 CONTENTS INDICATOR
3.14 CONTAINER COMPARTMENTS AND SUB-COMPARTMENTS
3.14.1 Internal containers
3.14.2 Pressure relief device discharge
3.14.3 Construction
3.14.4 Ventilation
3.14.5 Conduits
3.15 MOUNTING OF FUEL CONTAINER
3.15.1 Access to valves
3.15.2 Attachment to vehicle
3.15.3 Alternate anchoring
3.15.4 Multiple containers
3.16 CONTAINER LOCATION AND GROUND CLEARANCES
3.17 PROTECTION
3.18 HEAT SHIELDING
4 LNG CONTAINER AND FUEL SYSTEM COMPONENTS
4.1 APPLICATION
4.1.1 General
4.1.2 LNG fuel supply system components
4.1.3 Use of multiple components
4.2 CONTAINER
4.2.1 General
4.2.2 Structural integrity
4.3 DESIGN OF REFUELLING CONNECTION
4.4 CONTAINER SHUT-OFF VALVE
4.4.1 General
4.4.2 Container filling
4.4.3 Reuse
4.4.4 Repair
4.4.5 Markings
4.5 PRESSURE RELIEF DEVICES
4.5.1 General
4.5.2 Pressure relief devices
4.5.3 Heat leak
4.6 MOUNTING OF CONTAINER(S)
4.6.1 Access to valves
4.6.2 Attachment to vehicle
4.6.3 Multiple containers
4.7 CONTAINER LOCATION AND GROUND CLEARANCES
4.8 PROTECTION OF CONTAINER
4.9 CONTAINERS MOUNTED IN THE INTERIOR OF VEHICLES
4.10 VAPORIZERS
5 CNG AND LNG FUEL SERVICE LINES AND MATERIALS
5.1 APPLICATION
5.2 MATERIALS
5.3 RIGID PIPING
5.3.1 General
5.3.2 Design
5.4 FLEXIBLE PIPING
5.5 JOINTS AND CONNECTIONS
5.6 PIPING INSTALLATION AND PROTECTION
5.7 PIPING OR FITTINGS IN ENCLOSED SPACES
5.8 CNG TRAILERS AND SEMITRAILERS
5.9 FUEL HOSE FOR PRESSURE NOT EXCEEDING 100 kPa
5.10 NG GAS FUEL PIPING FOR PRESSURE NOT EXCEEDING 450 kPa
5.11 CNG BREAKAWAY COUPLINGS
6 FUEL CONTROL EQUIPMENT
6.1 APPLICATION
6.2 FUEL METERING SYSTEM
6.3 FUEL SELECTOR
6.3.1 General
6.3.2 Optional fuel type
6.3.2.1 Shut-off device
6.3.2.2 Fuel selection control
6.4 PETROL OR DIESEL SYSTEM MODIFICATIONS
6.5 ELECTRICAL WIRING
6.6 ENGINE MANAGEMENT SYSTEM
7 INSPECTION, TESTING AND COMMISSIONING
7.1 APPLICATION
7.2 USED EQUIPMENT
7.3 MODIFICATIONS AND REPAIRS
7.4 PRECAUTIONS
7.5 INSPECTION
7.6 LEAK DETECTION
7.7 CONTAINERS
7.7.1 CNG
7.7.2 LNG
7.7.2.1 General
7.7.2.2 Inspection
7.7.2.3 Test report
7.8 INSTALLATION TEST
7.8.1 General
7.8.2 Sealing of compartment and sub-compartment
7.8.3 Leak testing of gas system
7.8.4 Test of fuel changeover system
7.8.5 Test of automatic full shut-off device (AFSOD) operation
7.8.6 Water system tests
7.8.7 Visual inspection
7.9 PERIODIC INSPECTION
7.9.1 General
7.9.2 System check
7.10 NON-RETURN VALVE TEST
8 CERTIFICATION, COMPLIANCE PLATE, MARKINGS AND LABELS
8.1 APPLICATION
8.2 CERTIFICATION
8.3 COMPLIANCE PLATE
8.4 LABELS AND MARKINGS
8.4.1 Vehicle identification—Australia only
8.4.1.1 General
8.4.1.2 CNG
8.4.1.3 LNG
8.4.2 Vehicle identification—New Zealand only
8.4.3 Refuelling information plate
8.4.4 Selector
8.5 OPERATING INSTRUCTIONS
APPENDIX A
APPENDIX B
APPENDIX C
APPENDIX D
D1 Scope
D2 COMBUSTIBLE GAS DETECTORS
D3 TRACE GAS DETECTORS
D4 FOAMING AGENTS
D5 TOTAL IMMERSION
APPENDIX E
E1 SCOPE AND VEHICLE SELECTION
E1.1 Scope
E1.2 Use of certified kits on engine/vehicle variants
E1.2.1 Light vehicles
E1.2.2 Heavy vehicles
E2 ADR79/00 VEHICLES
E2.1 General requirements
E2.2 Testing requirements
E2.2.1 General
E2.2.2 IM240 test procedure for bi-fuel vehicles (part time petrol or NG)
E2.2.3 IM240 test procedure for mono-fuel vehicles (permanent NG)
E2.2.4 Dual fuel diesel vehicles (part diesel and part NG)
E2.3 Documentation and installation requirements
E3 ADR79/01 VEHICLES
E3.1 General requirements
E3.2 Testing requirements
E3.2.1 General
E3.2.2 IM240 test for Bi-fuel vehicles (part time petrol or NG)
E3.2.3 IM240 test procedure for Mono-fuel vehicles (permanent NG)
E3.2.4 Dual fuel diesel vehicles (part diesel and part NG)
E3.3 Documentation and installation requirements
E4 ADR70/00 VEHICLES
E4.1 General requirements
E4.2 Testing requirements
E4.2.1 DT80 Method
E4.2.2 CUEDC Method
E4.2.3 ADR70 Method
E4.3 Documentation and installation requirements
E4.3.1 DT80 Method
E4.3.2 CUEDC Method
E4.3.3 ADR70 Method
E5 ADR80/00 AND ADR80/01 VEHICLES
E5.1 General requirements
E5.2 Testing requirements
E5.3 Documentation and installation requirements
E6 ADR79/02 VEHICLES
E6.1 General requirements
E6.2 Testing requirements
E6.3 Documentation and installation requirements
Cited references in this standard
[Current]
Mechanical properties of fasteners made of carbon steel and alloy steel, Part 1: Bolts, screws and studs
[Withdrawn]
Certified gas cylinder test stations
[Current]
Tube fittings with dryseal American standard taper pipe and unified threads for automotive and industrial use (imperial units)
[Current]
Gas fuel systems for forklifts and industrial engines
[Withdrawn]
Gas cylinders — High pressure cylinders for the on-board storage of natural gas as a fuel for automotive vehicles
Content history
[Superseded]
DR 07279