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    AS 3723-1989

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    Installation and maintenance of plastics pipe systems for gas

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

    Superseded date:  26-06-2021

    Language(s):  English

    Published date:  01-01-1989

    Publisher:  Standards Australia

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

    1 - AS 3723-1989 INSTALLATION AND MAINTENANCE OF PLASTICS PIPE SYSTEMS FOR GAS
    4 - PREFACE
    5 - CONTENTS
    6 - SECTION 1. SCOPE AND GENERAL
    6 - 1.1 SCOPE.
    6 - 1.2 REFERENCED DOCUMENTS.
    6 - 1.3 DEFINITIONS.
    6 - 1.3.1 Approved and approval
    6 - 1.3.2 Authority, Operating
    6 - 1.3.3 Authority, Statutory
    6 - 1.3.4 Backfill
    6 - 1.3.5 Bedding material
    6 - 1.3.6 Electrofusion fittings
    7 - 1.3.7 Gas
    7 - 1.3.8 Hot tap
    7 - 1.3.9 Insertion
    7 - 1.3.10 Main
    7 - 1.3.11 Pressure.
    7 - 1.3.12 Purging
    7 - 1.3.13 Service
    7 - 1.4 MATERIALS.
    7 - 1.4.1 Pipe and fittings.
    7 - 1.4.2 Rubber rings.
    7 - 1.4.3 Lubricants for rubber ring and expansion joints.
    7 - 1.4.4 Adhesives and cleaning or priming fluids.
    8 - SECTION 2. GENERAL REQUIREMENTS FOR THE SELECTION AND USE OF PLASTICS PIPES AND GAS
    8 - 2.1 SCOPE OF SECTION.
    8 - 2.2 HANDLING AND STORAGE.
    8 - 2.2.1 General.
    8 - 2.2.2 Handling.
    8 - 2.2.3 Storage.
    8 - 2.2.4 Coils.
    8 - 2.2.5 Pipe stacking.
    8 - 2.3 SAFETY
    8 - 2.4 THERMALEXPANSION.
    10 - SECTION 3. JOINTING METHODS
    10 - 3.1 SCOPE OF SECTION.
    10 - 3.2 POLYAMIDE PIPE AND FITTINGS.
    10 - 3.2.1 General.
    10 - 3.2.2 Adhesive joints.
    10 - 3.2.3 Mechanical joints.
    11 - 3.3 POLYETHYLENE PIPE AND FITTINGS.
    11 - 3.3.1 Fusion joints.
    11 - 3.3.2 Butt fusion.
    11 - 3.3.3 Socket fusion.
    12 - 3.3.4 Saddle fusion.
    14 - 3.3.5 Electrofusion jointing of PE.
    14 - 3.3.6 Mechanical joints.
    15 - 3.4 UPVC PIPE AND FITTINGS.
    15 - 3.4.1 General.
    15 - 3.4.2 Solvent joints.
    15 - 3.4.3 Mechanical joints.
    17 - SECTION 4. STOPPING THE GAS FLOW
    17 - 4.1 GENERAL METHODS.
    17 - 4.2 BAGGING-OFF.
    17 - 4.3 SQUEEZING-OFF.
    17 - 4.3.1 General.
    17 - 4.3.2 Preliminary assessment.
    17 - 4.3.3 Return to service.
    17 - 4.4 BENDING-BACK.
    17 - 4.5 CAPPING.
    17 - 4.6 SAFETY.
    20 - SECTION 5. INSTALLATION OF PLASTICS PIPES FOR GAS
    20 - 5.1 INSTALLATION OF GAS PIPING.
    20 - 5.1.1 Excavation and bedding.
    20 - 5.1.2 Boring and conduits
    20 - 5.1.3 Ploughing-in.
    20 - 5.1.4 Installing pipe.
    21 - 5.1.5 Tie-ins.
    21 - 5.1.6 Marker tape and tracer wire.
    21 - 5.1.7 Insertion.
    21 - 5.1.8 Purging.
    22 - SECTION 6. TESTING AFTER INSTALLATION
    22 - 6.1 GENERAL.
    22 - 6.2 PRESSURE TESTING.
    22 - 6.3 TEST PROGRAM.
    22 - 6.4 PREPARATION OF THE TESTING EQUIPMENT.
    22 - 6.5 PREPARATION OF THE TEST SECTION.
    22 - 6.6 PRESSURIZATION.
    22 - 6.7 TEST PROCEDURE.
    23 - 6.8 ASSESSMENT OF THE TEST.
    23 - 6.9 DISPOSAL OF TEST FLUID.
    23 - 6.10 COMMISSIONING OF TEST SECTION.
    24 - SECTION 7. MAINTENANCE OF PLASTICS PIPING
    24 - 7.1 GENERAL.
    24 - 7.2 MAINS.
    24 - 7.3 SERVICES.

    Abstract - (Show below) - (Hide below)

    Provides installation and jointing procedures for below-ground plastics pressure systems in gas service. Precautions in the selection and handling of plastics pipes are given, and recommended procedures for isolation and maintenance of plastics pipes are covered.

    Scope - (Show below) - (Hide below)

    This Standard sets out methods of installing polyamide, polyethylene and unplasticizedPVC (hereinafter referred to as PA, PE, UPVC respectively) gas pipelines below ground for pressure applications. Requirements for the selection, storage and handling of plastics pipe, and procedures for the jointing of plastics materials are specified. Alternative isolation procedures and piping maintenance methods are given.This Standard is primarily intended for use in association with pipe and fittings complying with AS 1464, Parts 1 and 2, AS 1667, Parts 1 and 2, AS 2718, Parts 1 and 2, and AS 2944, Parts 1 and 2.

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

    Committee PL-025
    Document Type Standard
    Publisher Standards Australia
    Status Superseded
    Superseded By
    Supersedes
    Under Revision

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

    AS 2718.2-1984 Plastics pipes and fittings for gas reticulation - Polyethylene - Outside diameter series Fittings
    AS 1697-2005 Installation and maintenance of steel pipe systems for gas
    AS 1667.1-1984 Plastics pipes and fittings for gas reticulation - Polyethylene -Nominal size series Pipes
    AS 1978-1987 Pipelines - Gas and liquid petroleum - Field pressure testing (known as the SAA Code for Field Pressure Testing of Pipelines)
    AS/NZS 3100:2002 Approval and test specification - General requirements for electrical equipment
    AS/NZS 2648.1:1995 Underground marking tape Non-detectable tape (Reconfirmed 2020)
    AS 3300-1996 Approval and test specification - General requirements for household and similar electrical appliances
    AS 2944.1-2007 Plastics pipes and fittings for gas reticulation Polyamide pipes
    AS 2944.2-2007 Plastics pipes and fittings for gas reticulation Polyamide fittings
    06/30146370 DC : DRAFT SEP 2006 ISO 15439-1 - PLASTICS PIPING SYSTEMS FOR THE SUPPLY OF GASEOUS FUELS FOR MAXIMUM OPERATING PRESSURE UP TO AND INCLUDING 4 BAR - POLYAMIDE (PA) - PART 1: GENERAL
    AS 2129-2000 Flanges for pipes, valves and fittings (Reconfirmed 2016)
    AS 2566-1982 Plastics pipelaying design
    AS 2032-1977 Code of practice for installation of UPVC pipe systems
    ISO 15439-1:2007 Plastics piping systems for the supply of gaseous fuels for maximum operating pressure up to and including 0,4 MPa (4 bar) Polyamide (PA) Part 1: General

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

    AS 5601-2004 Gas installations
    AS 1697-2005 Installation and maintenance of steel pipe systems for gas
    AS/NZS 4130:1997 Polyethylene (PE) pipes for pressure applications
    AS/NZS 4129:2000 Fittings for polyethylene (PE) pipes for pressure applications
    AS 4568-2005 Preparation of a safety and operating plan for gas networks
    AS 4617-2004 Manual shut off gas valves
    AS/NZS 4129(INT):1997 Fittings for polyethylene (PE) pipes for pressure applications
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