1 - AS 4983:2003 GAS FUEL SYSTEMS FOR FORKLIFTS AND INDUSTRIAL ENGINES
4 - PREFACE
5 - CONTENTS
8 - SECTION 1 - SCOPE AND GENERAL
8 - 1.1 SCOPE AND APPLICATION
8 - 1.1.1 Scope
8 - 1.1.2 Application
8 - 1.2 OBJECTIVE
8 - 1.3 REFERENCED DOCUMENTS
8 - 1.4 NEW DESIGNS AND INNOVATIONS
9 - 1.5 DEFINITIONS
9 - 1.5.1 Approved, approval
9 - 1.5.2 Authorized person
9 - 1.5.3 Authority
9 - 1.5.4 Automatic fill limiter (LP Gas)
9 - 1.5.5 Automatic fuel shut-off device
9 - 1.5.6 Capacity (of a container)
9 - 1.5.7 Closed-loop system
9 - 1.5.8 Compartment
9 - 1.5.9 CNG (Compressed natural gas)
9 - 1.5.10 Container (LP Gas)
9 - 1.5.11 Contents gauge
10 - 1.5.12 Cylinder (CNG)
10 - 1.5.13 Double non-return valve
10 - 1.5.14 Excess-flow valve
10 - 1.5.15 Fill line
10 - 1.5.16 Fixed liquid level gauge
10 - 1.5.17 Fuel filter
10 - 1.5.18 Fuel service line
10 - 1.5.19 Gas-air mixer
10 - 1.5.20 Hydrostatic relief valve
10 - 1.5.21 Ignition source
10 - 1.5.22 Internal (component)
11 - 1.5.23 Licensed installer
11 - 1.5.24 LP Gas
11 - 1.5.25 Manifold
11 - 1.5.26 Maximum permitted filling level
11 - 1.5.27 May
11 - 1.5.28 NGV
11 - 1.5.29 Non return valve
11 - 1.5.30 POL coupling
11 - 1.5.31 Pressure
11 - 1.5.32 Pressure relief device (CNG)
11 - 1.5.33 Professional engineer
11 - 1.5.34 Rated working pressure
11 - 1.5.35 Regulator
12 - 1.5.36 Relief device (LP Gas)
12 - 1.5.37 Removable container
12 - 1.5.38 Safety coupling
12 - 1.5.39 Safety valve (PRV-Pressure Relief Valve)
12 - 1.5.40 Service valve
12 - 1.5.41 Shall
12 - 1.5.42 Should
12 - 1.5.43 Sub-compartment
12 - 1.5.44 Vaporizer (Converter)
12 - 1.6 INDUSTRIAL EQUIPMENT MODIFICATIONS
13 - 1.7 MINOR ALTERATIONS
13 - 1.8 ENGINE MANAGEMENT SYSTEM
13 - 1.9 USE OF EQUIPMENT IN ENCLOSED SPACES
13 - 1.10 PREVIOUSLY USED COMPONENTS AND MATERIALS
14 - 1.11 GAS OR LIQUID FUEL WITHDRAWAL FROM INDUSTRIAL EQUIPMENT SYSTEMS
14 - 1.12 WORKING AREA AND SAFE PRACTICES
14 - 1.13 REGULATORY AGENCIES
15 - SECTION 2 - COMPONENTS
15 - 2.1 GENERAL SUITABILITY
15 - 2.1.1 General
15 - 2.1.2 Suitability for pressure
15 - 2.2 MOVING PARTS
15 - 2.3 SUITABILITY FOR INSTALLATION
15 - 2.4 MODIFICATION
15 - 2.5 METALS
16 - 2.6 NON-METALS
17 - SECTION 3 - LP GAS CONTAINER, COMPONENTS AND FILLING SYSTEMS
17 - 3.1 SCOPE OF SECTION
17 - 3.2 CONTAINER
17 - 3.3 COMPONENTS FOR REMOVABLE CONTAINERS
17 - 3.4 COMPONENTS FOR FIXED CONTAINERS
18 - 3.5 COMPONENT SUITABILITY
18 - 3.6 FILLING CONNECTION
18 - 3.7 FILLER SYSTEM
18 - 3.7.1 Direct filling system
19 - 3.7.2 Remote filling system
19 - 3.7.3 Internal non-return valve
19 - 3.7.4 Filler cap
19 - 3.7.5 Filling point location
20 - 3.8 AUTOMATIC FILL LIMITER (AFL)
20 - 3.8.1 Design
20 - 3.8.2 Performance
20 - 3.8.3 Durability
20 - 3.9 FIXED LIQUID LEVEL GAUGE
21 - 3.10 CONTENTS GAUGE
21 - 3.11 EXCESS-FLOW VALVE
21 - 3.12 SERVICE VALVE
21 - 3.13 AUTOMATIC FUEL SHUT-OFF DEVICE FOR FIXED CONTAINER
21 - 3.13.1 General
22 - 3.13.2 Fuel filter
22 - 3.14 SUITABILITY FOR HAZARDOUS ZONES
22 - 3.15 SAFETY VALVE
22 - 3.15.1 General
22 - 3.15.2 Safety valve discharge
22 - 3.16 LOCATION OF CONTAINER COMPONENTS
23 - 3.17 COMPARTMENTS AND SUB-COMPARTMENTS
23 - 3.17.1 Internal containers
23 - 3.17.2 Construction
23 - 3.17.3 Ventilation
24 - 3.17.4 Conduits and ducts
25 - 3.18 MOUNTING OF FUEL CONTAINER
25 - 3.18.1 Correct orientation
25 - 3.18.2 Access to valves
25 - 3.18.3 Attachment to industrial equipment
27 - 3.18.4 Alternate considerations
29 - 3.18.5 Multiple containers
29 - 3.19 CONTAINER LOCATION
30 - 3.20 PROTECTION
30 - 3.21 HEAT SHIELDING
32 - SECTION 4 - CNG CYLINDER, COMPONENTS AND FILLING SYSTEMS
32 - 4.1 SCOPE OF SECTION
32 - 4.2 FUEL SUPPLY SYSTEM COMPONENTS
32 - 4.2.1 Components
32 - 4.2.2 Use of combined components
32 - 4.3 CYLINDER
32 - 4.3.1 General
32 - 4.3.2 Cylinder painting
32 - 4.4 CYLINDER VALVE(S)
32 - 4.4.1 Cylinder valve
33 - 4.4.2 Automatic fuel shut-off device of cylinder
33 - 4.5 REFUELLING CONNECTION
33 - 4.5.1 Design of connection
33 - 4.5.2 Dust cap
34 - 4.6 REFUELLING NON-RETURN VALVE
34 - 4.7 LOCATION OF REFUELLING CONNECTION
34 - 4.8 CYLINDER COMPARTMENTS AND SUB-COMPARTMENTS
34 - 4.8.1 Internal cylinders
34 - 4.8.2 Safety device discharge
34 - 4.8.3 Construction
35 - 4.8.4 Ventilation
36 - 4.8.5 Conduits
37 - 4.9 MOUNTING OF CYLINDER
37 - 4.9.1 Access to valves
37 - 4.9.2 Attachment to forklift or mobile industrial equipment
38 - 4.9.3 Alternate considerations
39 - 4.10 CYLINDER LOCATION AND GROUND CLEARANCES
39 - 4.11 PROTECTION
40 - 4.12 HEAT SHIELDING
41 - SECTION 5 - LP GAS AND CNG FUEL SERVICE LINE
41 - 5.1 SCOPE OF SECTION
41 - 5.2 RIGID PIPING
41 - 5.2.1 General
41 - 5.2.2 Suitability of rigid piping
41 - 5.3 FLEXIBLE PIPING (HOSE AND HOSE ASSEMBLY)
42 - 5.4 JOINTS AND CONNECTIONS
42 - 5.5 INSTALLATION AND PROTECTION
43 - 5.6 PIPING OR FITTINGS IN ENCLOSED OPERATOR CABINS
43 - 5.7 MULTIPLE LP GAS CONTAINER INSTALLATIONS
43 - 5.8 HYDROSTATIC RELIEF VALVE (LP GAS)
43 - 5.9 LP GAS AND CNG FUEL PIPING FOR PRESSURE NOT EXCEEDING 100 kPa
45 - SECTION 6 - FUEL CONTROL EQUIPMENT
45 - 6.1 SCOPE OF SECTION
45 - 6.2 FUEL FILTER
45 - 6.3 LP GAS VAPORIZER AUTOMATIC FUEL SHUT-OFF DEVICE
46 - 6.4 AUTOMATIC FUEL SHUT-OFF DEVICE FOR CNG SYSTEMS
46 - 6.5 LP GAS VAPORIZER/REGULATOR
46 - 6.6 REGULATING SYSTEMS
46 - 6.7 INSTALLATION OF LP GAS VAPORIZER OR REGULATOR
46 - 6.8 FUEL METERING SYSTEM
47 - 6.9 FUEL SELECTION
47 - 6.9.1 General
47 - 6.9.2 Fuel changeover system
47 - 6.9.3 Optional fuel type
48 - 6.10 PETROL SYSTEM MODIFICATIONS
48 - 6.11 ELECTRICAL WIRING
48 - 6.12 ENGINE MANAGEMENT SYSTEM
48 - 6.13 CONTENTS INDICATOR
49 - SECTION 7 - INSPECTION TESTING AND COMMISSIONING
49 - 7.1 SCOPE OF SECTION
49 - 7.2 USED COMPONENTS
49 - 7.3 MODIFICATIONS AND REPAIRS
49 - 7.4 PRECAUTIONS
50 - 7.5 INSPECTION
50 - 7.6 LEAK DETECTION
50 - 7.7 FIXED LP GAS CONTAINER ASSEMBLY LEAK TEST
50 - 7.7.1 General
50 - 7.7.2 Leak test
51 - 7.8 INSTALLATION TEST
51 - 7.8.1 General
51 - 7.8.2 Gastightness of compartment and sub-compartment
51 - 7.8.3 Leak testing of gas system
52 - 7.8.4 Test of automatic fill limiter on fixed LP Gas container installations
52 - 7.8.5 Test of fuel control device
52 - 7.8.6 Coolant system tests
52 - 7.8.7 Visual inspection
52 - 7.9 ANNUAL INSPECTION AND TESTS
52 - 7.9.1 General
52 - 7.9.2 System check
55 - 7.10 EXCESS FLOW VALVE TEST (LP GAS)
55 - 7.11 NON-RETURN VALVE TEST
55 - 7.12 AUTOMATIC FILL LIMITER (AFL) TEST FOR LP GAS INSTALLATIONS
56 - SECTION 8 - CERTIFICATION, COMPLIANCE PLATE, MARKINGS AND LABELS
56 - 8.1 GENERAL REQUIREMENT
56 - 8.2 CERTIFICATION
56 - 8.3 INFORMATION PLATES
56 - 8.3.1 Compliance plates
56 - 8.3.2 Information plate for removable LP Gas container
57 - 8.3.3 CNG cylinder information plate
57 - 8.4 LABELS AND MARKINGS
57 - 8.4.1 Filler markings for LP Gas installations
57 - 8.4.2 Outlet markings for LP Gas installations
58 - 8.4.3 Mobile industrial equipment identification
58 - 8.4.4 Access hatch
58 - 8.4.5 Selector
58 - 8.5 OPERATING INSTRUCTIONS
59 - APPENDIX A - LIST OF REFERENCED DOCUMENTS
61 - APPENDIX B - REGULATING AGENCY INFORMATION
64 - APPENDIX C - LEAK DETECTION METHODS
64 - C1 SCOPE
64 - C2 COMBUSTIBLE-GAS DETECTOR
64 - C3 TRACE-GAS DETECTORS
64 - C4 FOAMING AGENTS
65 - C5 TOTAL IMMERSION
65 - C6 VISUAL INSPECTION (LP GAS)