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    AS 2746-1999

    AvailableSuperseded An Available Superseded Standard is one, which has been made available for a period of time although it has been formally superseded by another Standard. Its availability is maintained where it is referenced in legislation/regulations or in other Standards and its use should be restricted to where so referenced. No responsibility is taken by SAI Global as to the ongoing technical validity of such a Standard, the responsibility resting with the referencing authority.

    Working areas for gas-fuelled vehicles

    Available format(s):  Hardcopy, PDF 1 User, PDF 3 Users, PDF 5 Users, PDF 9 Users

    Language(s):  English

    Published date:  01-01-1999

    Publisher:  Standards Australia

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    Table of Contents - (Show below) - (Hide below)

    1 - AS 2746-1999 WORKING AREAS FOR GAS-FUELLED VEHICLES
    4 - PREFACE
    5 - CONTENTS
    7 - FOREWORD
    8 - SECTION 1 SCOPE AND GENERAL
    8 - 1.1 SCOPE
    8 - 1.2 OBJECTIVE
    8 - 1.3 NEW DESIGNS AND INNOVATIONS
    8 - 1.4 REFERENCED DOCUMENTS
    9 - 1.5 DEFINITIONS
    9 - 1.5.1 CNG
    9 - 1.5.2 Gas fuel system
    9 - 1.5.3 Hazardous area
    9 - 1.5.4 Ignition source
    9 - 1.5.5 NGV
    9 - 1.5.6 Service pit
    9 - 1.5.7 Working area
    10 - SECTION 2 GENERAL SERVICE WORKING AREAS
    10 - 2.1 APPLICATION
    10 - 2.2 PREMISES
    10 - 2.3 PREVENTION OF OVERHEATING
    11 - SECTION 3 GAS LEAKAGE PROCEDURES
    11 - 3.1 APPLICATION
    11 - 3.2 PROCEDURES
    11 - 3.2.1 Known or suspected gas escape
    11 - 3.2.2 Damaged vehicles
    12 - SECTION 4 SPECIALIST GAS WORKING AREAS - LP GAS
    12 - 4.1 APPLICATION
    12 - 4.2 PERSONNEL
    12 - 4.3 EQUIPMENT
    12 - 4.4 PREMISES
    12 - 4.5 VENTILATION
    13 - 4.6 INCREASED HAZARD
    13 - 4.7 WORK ON THE CONTAINER AND FITTINGS
    13 - 4.8 WORK ON THE GAS FUEL SYSTEM
    13 - 4.9 FUEL UNLOADING
    14 - 4.10 CONTAINER PURGING
    14 - 4.11 PURGING INTO SERVICE
    14 - 4.12 STORAGE OF UNPURGED CONTAINERS
    14 - 4.13 SCRAPPING
    14 - 4.13.1 Vehicles
    14 - 4.13.2 Containers
    15 - SECTION 5 SPECIALIST GAS WORKING AREAS - CNG
    15 - 5.1 APPLICATION
    15 - 5.2 PERSONNEL
    15 - 5.3 EQUIPMENT
    15 - 5.4 PREMISES
    15 - 5.5 VENTILATION
    15 - 5.6 INCREASED HAZARD
    16 - 5.7 WORK ON THE CYLINDER AND FITTINGS
    16 - 5.8 WORK ON THE GAS FUEL SYSTEM
    16 - 5.9 FUEL UNLOADING
    16 - 5.10 STORAGE OF UNPURGED CYLINDERS
    16 - 5.11 SCRAPPING
    16 - 5.11.1 Vehicles
    16 - 5.11.2 Cylinders
    17 - APPENDIX A - REGULATING AGENCY INFORMATION
    19 - APPENDIX B - SPECIALIST WORKING AREA EQUIPMENT
    20 - APPENDIX C - LP GAS FUEL UNLOADING METHODS
    20 - C1 INTRODUCTION
    20 - C2 DECANTING
    20 - C2.1 Description
    20 - C2.2 Precautions
    21 - C2.3 Equipment
    21 - C2.4 Procedure
    21 - C3 FLARING
    21 - C3.1 Description
    21 - C3.2 Precautions
    21 - C3.3 Equipment
    21 - C3.4 Procedure
    22 - C4 PUMPING OUT
    22 - C4.1 Description
    22 - C4.2 Compression method
    22 - C4.3 Applied pressure method
    22 - C5 VENTING
    22 - C5.1 General
    23 - C5.2 Description
    23 - C5.3 Precautions
    24 - APPENDIX D - CNG FUEL UNLOADING METHODS
    24 - D1 INTRODUCTION
    24 - D2 FLARING
    24 - D2.1 Description
    24 - D2.2 Precautions
    24 - D2.3 Equipment
    24 - D2.4 Procedure
    25 - D3 VENTING TO ATMOSPHERE
    25 - D3.1 General
    25 - D3.2 Precautions
    25 - D3.3 Equipment
    25 - D3.4 Procedure

    Abstract - (Show below) - (Hide below)

    Sets out requirements for the premises and the procedures for converting and equipping vehicles to use LP Gas or CNG as an engine fuel. Procedures for the maintenance, servicing and repairs to the gas fuel system are also included.

    Scope - (Show below) - (Hide below)

    This Standard sets out requirements for the premises, and procedures for the following types of work or activity associated with gas-fuelled vehicles: (a) Converting and equipping vehicles to use gas such as liquefied petroleum gas (LP Gas) or compressed natural gas (CNG) as an engine fuel.(b) Maintenance, servicing and repairs to the gas fuel system, e.g. adjustment, maintenance and replacement of gas system componentry.(c) Routine motor vehicle maintenance not involving the gas fuel system, e.g. lubrication, brake repair or wheel alignment, body or windscreen repairs, engine tuning.NOTE: The operations described in Items (a) or (b) above are undertaken in a specialist gas working area, whereas Item (c) would apply to general service workshops not having any specific requirements for working with gaseous engine fuels.

    General Product Information - (Show below) - (Hide below)

    Committee ME-046
    Document Type Standard
    Publisher Standards Australia
    Status AvailableSuperseded
    Superseded By
    Supersedes
    Under Revision

    History - (Show below) - (Hide below)

    First published as AS 2746-1985.Second edition 1999. First published as AS 2746-1985. Second edition 1999.

    Standards Referenced By This Book - (Show below) - (Hide below)

    AS/NZS 1425:1999 LP Gas fuel systems for vehicle engines
    AS/NZS 1596:2002 The storage and handling of LP Gas
    AS 2337.1-1999 Gas cylinder test stations General requirements, inspections and tests - Gas cylinders
    AS/NZS 2430.3.4:1997 Classification of hazardous areas - Examples of area classification - Flammable gases
    AS 2430.1-1987 Classification of hazardous areas - Explosive gas atmospheres
    AS 4332-2004 The storage and handling of gases in cylinders (Reconfirmed 2016)
    AS/NZS 2739:1999 Natural gas (CNG) fuel systems for vehicle engines
    AS/NZS 1425:2007 LP Gas fuel systems for vehicle engines
    AS/NZS 2739:2003 Natural gas (CNG) fuel systems for vehicle engines
    AS 2337.1-2004 Gas cylinder test stations General requirements, inspection and tests - Gas cylinders
    AS 4332-1995 The storage and handling of gases in cylinders
    AS 1668.2-1991 The use of mechanical ventilation and air-conditioning in buildings Mechanical ventilation for acceptable indoor-air quality
    AS/NZS 1596:1997 Storage and handling of LP Gas
    AS/NZS 2430.3.4:2004 Classification of hazardous areas - Examples of area classification - Flammable gases

    Standards Referencing This Book - (Show below) - (Hide below)

    AS/NZS 2739:2003 Natural gas (CNG) fuel systems for vehicle engines
    AS/NZS 2430.3.2:2004 Classification of hazardous areas - Examples of area classification - Vehicle workshops, vehicle parking, fuel dispensing stations and aircraft hangars
    AS 2430.3-1991 Classification of hazardous areas - Specific occupancies
    AS/NZS 1425:1999 LP Gas fuel systems for vehicle engines
    AS 2739-1992 Natural gas fuel systems for vehicle engines
    AS/NZS 1425:2003 LP Gas fuel systems for vehicle engines
    AS 2337.2-2004 Gas cylinder test stations LP Gas fuel vessels for automotive use (Reconfirmed 2016)
    AS/NZS 1425:2007 LP Gas fuel systems for vehicle engines
    AS 4983-2003 Gas fuel systems for forklifts and industrial engines
    AS/NZS 2430.3.2:1997 Classification of hazardous areas - Examples of area classification - Vehicle workshops, vehicle parking, fuel dispensing stations and aircraft hangers
    AS 4732-2002 LP Gas fuel systems for marine engines
    AS/NZS 2739:1999 Natural gas (CNG) fuel systems for vehicle engines
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