AS 4732-2002

$213.50

LP Gas fuel systems for marine engines

Sets out the requirements for liquefied petroleum gas (LP Gas) fuel systems for marine engines for either the propulsion of the craft or for powering auxiliary engines.

Table of contents
Header
About this publication
Preface
1 Scope and general
1.1 Scope and application
1.1.1 Scope
1.1.2 Application
1.2 Objective
1.3 Referenced documents
1.4 New designs and innovations
1.5 Definitions
1.6 Craft modifications
1.7 Approved equipment
1.8 Previously used equipment
1.9 LP gas withdrawal from marine systems
2 Components
2.1 General suitability
2.1.1 General
2.1.2 Suitability for pressure
2.2 Moving parts
2.3 Suitability for installation
2.4 Modification
2.5 Metals
2.6 Non-metals
3 Container
3.1 Application
3.2 Container
3.2.1 General
3.2.2 Use of fixed containers
3.2.3 Use of removable containers
3.3 Components for fixed containers
3.4 Components for removable containers
3.5 Component suitability
3.6 Filling connection
3.7 Filler non-return valve system
3.7.1 Direct filling system
3.7.2 Remote filling system
3.7.2.1 Filling connection
3.7.2.2 Fill line
3.7.3 Internal non-return valve
3.7.4 Filler cap
3.7.5 Location of fill point
3.8 Automatic fill limiter (AFL)
3.8.1 General
3.8.2 Performance
3.8.3 Durability
3.9 Fixed liquid level gauge
3.9.1 General
3.9.2 Gas-bleed type
3.10 Contents gauge
3.11 Excess-flow valve
3.11.1 Liquid
3.11.2 Vapour
3.12 Service valve
3.13 Automatic fuel shut-off device at container
3.13.1 General
3.13.2 Priming
3.13.3 Backflow
3.13.4 Electrical
3.13.5 Location
3.14 Fuel filter
3.15 Safety valve
3.15.1 General
3.15.2 Safety valve discharge
3.15.3 Safety valve discharge piping
3.16 Location of container components
3.17 Container location
3.18 Lockers
3.18.1 General
3.18.2 Ventilation
3.19 Sub-compartments
3.19.1 General
3.19.2 Construction
3.19.3 Ventilation
3.19.4 Conduits and ducts
3.20 Attachment of container
3.20.1 Correct orientation
3.20.2 Access to valves
3.20.3 Attachment to craft
3.20.4 Multiple containers
3.21 Protection
3.22 Suitability for hazardous zones
4 Fuel service line
4.1 Application
4.2 Rigid piping
4.2.1 General
4.2.2 Suitability of rigid piping
4.3 Flexible piping (hose and hose assembly)
4.4 Joints and connections
4.5 Installation and protection
4.6 Gas containment
4.7 Multiple container installations
4.8 Hydrostatic relief valve
4.9 Previously used equipment
4.10 LP Gas fuel piping for pressure not exceeding 100 kPa
5 Fuel control equipment
5.1 Application
5.2 Fuel filter
5.3 Automatic fuel shut-off device at regulator
5.4 Vaporizer
5.5 Regulator
5.6 Installation of vaporizer and regulator
5.7 Gas-air mixer
5.8 Fuel selector
5.8.1 General
5.8.2 Fuel change over system
5.8.3 Optional fuel (bi-fuel system)
5.8.3.1 General
5.8.3.2 Bypass relief device
5.8.3.3 Fuel selection control
5.8.3.4 Optional fuel system requirements
5.8.4 Partial substitution (dual-fuel system)
5.8.4.1 General
5.8.4.2 Fuel selection control
6 Leak containment
6.1 Application
6.2 Gas detection
6.2.1 General
6.2.2 Alarm position
6.2.3 Sensor position
6.2.4 Operation of the two-stage system when gas is detected
6.3 Electrical installation
6.3.1 General
6.3.2 Battery position
6.3.3 Electrical wiring
6.4 Forced ventilation
6.4.1 General
6.4.2 Purging of machinery space
6.4.3 Position of venting
6.4.4 Fan sizing
6.5 Natural ventilation
7 Inspection testing and commissioning
7.1 Application
7.2 Used equipment
7.3 Alterations and repairs
7.4 Precautions
7.5 Inspection
7.6 Leak detection
7.7 Container sub-assembly leak test
7.7.1 General
7.7.2 Leak test
7.8 Installation test
7.8.1 General
7.8.2 Locker and sub-compartment
7.8.3 Leak testing of gas system
7.8.4 Test of automatic fill limiter
7.8.5 Test of fuel control device
7.8.6 Coolant system test
7.8.7 Visual inspection
7.9 Periodic inspection and test
7.9.1 General
7.9.2 System check
7.10 Excess flow valve test
7.11 Non-return valve test
7.12 Automatic fill limiter test
7.13 Testing of automatic fuel shut-off device
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 Craft identification
8.4.2 Filler markings
8.4.3 Outlet markings
8.4.4 Access hatch
8.5 Operating instructions
Appendix A
Appendix B
Appendix C
C1 Scope
C2 Combustible-gas detector
C3 Trace-gas detectors
C4 Foaming agents
C5 Total immersion
C6 Visual inspection
Appendix D

Cited references in this standard
Content history
DR 00085

Please select a variation to view its description.

Published

10/05/2002

Pages

48

Please select a variation to view its pdf.

AS 4732-2002
$213.50