AS/NZS 5601.1:2010
Gas installations - Part 1: General installations
Contains the mandatory requirements and means of compliance for the design, installation and commissioning of gas installations that are associated with the use or intended use of fuel gases such as natural gas, LP Gas, biogas or manufactured gas.
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AS/NZS 5601.1:2010 GAS INSTALLATIONS - GENERAL INSTALLATIONS
PREFACE
CONTENTS
SECTION 1 SCOPE AND GENERAL
1.1 SCOPE AND APPLICATION
1.2 EXCLUSIONS
1.3 COMPLIANCE
1.4 OCCUPATIONAL HEALTH AND SAFETY
1.5 INTERPRETATION
1.6 DEFINITIONS
1.6.1 Accessible
1.6.2 Appliance
1.6.3 Appliance gas pressure regulator
1.6.4 Bathroom
1.6.5 Bedroom
1.6.6 Breather vent
1.6.7 Burner
1.6.8 Caravan
1.6.9 Certified/Certification
1.6.10 Certifying body
1.6.11 Combustible material
1.6.12 Combustible surface
1.6.13 Combustion products
1.6.14 Competent person
1.6.15 Compressed natural gas (CNG)
1.6.16 Condensate
1.6.17 Condensation
1.6.18 Consumer piping
1.6.19 Cupboard
1.6.20 Cylinder
1.6.21 Decorative flame effect fire
1.6.22 DN (diametre nominale)
1.6.23 Double block and vent safety shut-off system
1.6.24 Draught diverter
1.6.25 Enclosure
1.6.26 Excess air
1.6.27 Excess flow valve
1.6.28 Exitway
1.6.29 Explosive limit
1.6.30 Fail safe (also see lock-out)
1.6.31 Fire damper
1.6.32 Fire-isolated passageway
1.6.33 Fire-isolated ramp
1.6.34 Fire-isolated stairway
1.6.35 Fire resistant material
1.6.36 Flame safeguard system
1.6.37 Flue
1.6.38 Flue cowl
1.6.39 Flue gases
1.6.40 Flue terminal
1.6.41 Gas
1.6.42 Gas consumption
1.6.43 Gasfitting (work)
1.6.44 Gas installation
1.6.45 Gas load
1.6.46 Gas meter
1.6.47 Gas meter assembly/Gas measurement system (GMS)
1.6.48 Gas pipework
1.6.49 Gas pressure regulator
1.6.50 Gastight
1.6.51 High-rise building
1.6.52 Hob
1.6.53 Hose assembly
1.6.54 Hot-tapping
1.6.55 Hot water boiler
1.6.56 Ignition source
1.6.57 Indoor(s)
1.6.58 Insulating joint
1.6.59 Interlock
1.6.60 Intrinsically safe
1.6.61 Isolation valve
1.6.62 Lock-out
1.6.63 Main run
1.6.64 Manual shut-off valve
1.6.65 Maximum allowable operating pressure (MAOP)
1.6.66 Maximum over-pressure
1.6.67 May
1.6.68 Multilayer pipe
1.6.69 Network operator
1.6.70 Nominal size (DN)/Nominal diameter (DN)
1.6.71 Non-return valve
1.6.72 Operating pressure
1.6.73 Outdoor(s)
1.6.74 Over-pressure protection
1.6.75 Permanent joint
1.6.76 Pipe fitting
1.6.77 Plant room
1.6.78 POL fitting (Prest-o-lite fitting)
1.6.79 Pool heater
1.6.80 Premises
1.6.81 Pressure
1.6.82 Pressure test point
1.6.83 Proprietary system
1.6.84 Purge or purging
1.6.85 Push-on connector
1.6.86 Quasi-outdoor(s)
1.6.87 Quick-connect device
1.6.88 Range hood
1.6.89 Rated working pressure
1.6.90 Residential garage
1.6.91 Riser
1.6.92 Safe path
1.6.93 Safety shut-off system
1.6.94 Safety shut-off valve
1.6.95 Shall
1.6.96 Should
1.6.97 Steam boiler
1.6.98 Storey
1.6.99 Swivel joint
1.6.100 Tailpipe
1.6.101 Tank
1.6.102 Technical Regulator
1.6.103 Temperature limit device
1.6.104 Trivet
1.6.105 Valve train
1.6.106 Vent line
1.6.107 Vent valve
1.6.108 Water heater
1.6.109 Wherever possible/where practicable
1.6.110 Wobbe Index
SECTION 2 PERFORMANCE BASED DESIGN AND OTHER ESSENTIAL REQUIREMENTS
2.1 GENERAL
2.2 GENERAL WORK AND SAFETY REQUIREMENTS
2.2.1 Verification of gas supply
2.2.2 Work on a gas installation
2.2.3 Sealing of open ends
2.2.4 Testing of consumer piping
2.2.5 Testing of gas installations
2.2.6 Safe practices and OHS
2.2.7 Increasing pressure of gas installations
2.2.8 Commissioning and recommissioning
2.2.9 Decommissioning
2.3 MATERIALS, FITTINGS AND COMPONENTS
2.3.1 Materials
2.3.2 Proprietary systems
2.3.3 Jointing
2.4 CONSUMER PIPING
2.4.1 General
2.4.2 Design
2.4.3 Prevention of reverse flow
2.4.4 Location
2.4.5 Support of consumer piping
2.4.6 Corrosion control
2.4.7 Provision for clearing condensate
2.4.8 Gas pressure regulators
2.4.9 Over-pressure protection
2.4.10 Pressure test points
2.4.11 Gas venting
2.4.12 Gas pressure raising devices
2.5 FLUES
2.5.1 General
2.5.2 Design
2.5.3 Materials
2.5.4 Installation
2.5.5 Location
2.5.6 Dampers
2.5.7 Flue terminals
2.5.8 Common flues
2.5.9 Power flues
2.5.10 Use of existing flues or chimneys
2.6 INSTALLING GAS APPLIANCES
2.6.1 Pre-installation
2.6.2 General installation requirements
2.6.3 Gas appliance location
2.6.4 Limitations on installation of an appliance
2.6.5 Ventilation of the gas appliance space and air supply to gas appliances
2.6.6 Valve trains
2.6.7 Gas appliance connection
2.6.8 Commissioning
SECTION 3 MEANS OF COMPLIANCE —GENERAL REQUIREMENTS AND SAFE WORK PRACTICES
3.1 GAS SUPPLY
3.2 GAS DEMAND
3.3 SAFE WORK PRACTICES
3.3.1 General
3.3.2 Isolating gas supply
3.3.3 Purging after completion of work
3.4 SEALING OF OPEN PIPE ENDS
3.4.1 Removal of debris
3.4.2 Open ends to be sealed while work is in progress
3.4.3 Outlet provided for future connection to be sealed
3.5 TESTING OF PIPING
3.5.1 Testing a new gas installation
3.5.2 Testing consumer piping after alteration, repair or extension
3.6 ACCEPTABLE SUBSTANCES FOR TESTING
3.7 HOT-TAPPING OF BRANCH FITTING TO CONSUMER PIPING
3.8 INCREASING THE OPERATING PRESSURE OF EXISTING CONSUMER PIPING
3.9 DEALING WITH DANGEROUS GAS INSTALLATIONS
3.10 METHODS OF LOCATING GAS LEAKS
3.11 SAFETY REQUIREMENTS IN THE VICINITY OF GAS LEAKS OR SUSPECTED GAS LEAKS
3.12 SAFE DISCHARGE OF STATIC ELECTRICITY
3.13 ELECTRICAL SAFETY BONDING OR BRIDGING
3.14 CLEARING A BLOCKAGE IN CONSUMER PIPING
SECTION 4 MATERIALS, FITTINGS AND COMPONENTS
4.1 GENERAL
4.1.1 Suitability for use
4.1.2 Reuse of materials and components
4.1.3 Mating parts
4.2 MATERIALS FOR CONSUMER PIPING
4.3 CONSUMER PIPING RESTRICTIONS
4.4 PROHIBITED TYPES OF JOINTS AND FITTINGS
4.5 PROPRIETARY SYSTEMS
4.5.1 Suitability for intended use
4.5.2 Installation of proprietary systems
4.5.3 Substitution of components
4.5.4 Identification of proprietary piping systems
4.6 MATERIAL BETWEEN LP GAS CYLINDER VALVE AND INLET TO FIRST REGULATOR
4.7 OTHER MATERIALS
4.7.1 Fire resistant material
4.7.2 Gasket material
4.7.3 Jointing compounds and materials
4.7.4 Vent line material
4.7.5 Flue material
4.8 COMPONENTS
4.8.1 Miscellaneous components
4.8.2 Manual shut-off valves
4.8.3 Hose assemblies
4.8.4 Swivel joints and couplings
SECTION 5 INSTALLING CONSUMER PIPING
5.1 GENERAL
5.1.1 Condition of pipe and pipe fittings
5.1.2 Prohibition of earthing through consumer piping
5.1.3 Protection from other materials
5.1.4 Storage and handling of pipe
5.1.5 Condition of pipe during installation
5.1.6 Restriction on repair of defective pipe or pipe fitting
5.1.7 Jointing
5.1.8 Restriction on use of thread sealant
5.1.9 Bending pipe
5.1.10 Re-making a flanged joint
5.1.11 Pipe installation not to reduce building strength or fire resistance
5.1.12 Identification of pipework
5.2 DESIGN OF CONSUMER PIPING
5.2.1 Pressure rating of piping and components
5.2.2 Appliance pressure rating
5.2.3 Requirements where pressurized air, oxygen or a stand by gas is to be used in conjunction with the fuel gas
5.2.4 Consumer piping size
5.2.5 Pipe size for consumer piping supplying a domestic type gas appliance
5.2.6 Flexibility of piping
5.2.7 Pipe alignment at expansion joint
5.2.8 Means of disconnection
5.2.9 Occupancy isolation
5.2.10 Building isolation
5.2.11 Isolation for specific installations
5.2.12 Provision of emergency valve (Steam boilers and hot water boilers)
5.2.13 Proprietary multilayer piping
5.3 LOCATION OF CONSUMER PIPING
5.3.1 Prohibited locations
5.3.2 Piping in an air duct, plenum ceiling, air handling plenum or ventilating duct
5.3.3 Piping not to be subject to physical damage
5.3.4 Separation from above-ground electrical equipment
5.3.5 Piping not to support an electrical conductor
5.3.6 Piping not to be exposed to liquid discharge
5.3.7 Above-ground piping not to touch the ground
5.3.8 Piping in a concealed location other than underground or embedded in concrete
5.3.9 Piping passing through a building’s exterior wall
5.3.10 Piping passing through walls and floors
5.3.11 Piping beneath a building and in the ground
5.3.12 Ventilation of concealed piping
5.3.13 Piping embedded in concrete
5.3.14 Piping in wooden joists
5.3.15 Piping in wooden plates and studs
5.3.16 Piping in steel framed buildings
5.3.17 Protection of multilayer piping
5.4 INSTALLATION OF CONSUMER PIPING UNDERGROUND
5.4.1 General
5.4.2 Bedding and support of pipe in the ground
5.4.3 Depth of cover
5.4.4 Quality of bedding and backfill
5.4.5 Consolidation of bedding and backfill material
5.4.6 Marker tape
5.4.7 Termination of plastic pipe and metallic continuation
5.4.8 Securing a riser
5.4.9 Separation from underground electrical cable
5.4.10 Separation from underground electrical earthing electrode
5.4.11 Separation from underground communication cable
5.4.12 Separation from underground services
5.4.13 Crossing other underground services
5.5 CORROSION CONTROL
5.5.1 Corrosion protection of bare steel
5.5.2 Corrosion protection of above-ground pipework
5.5.3 Joining of electrochemically incompatible materials
5.5.4 Requirement where coated steel pipe emerges from the ground
5.5.5 Requirement where consumer piping is to include cathodic protection
5.5.6 Proving effectiveness of pipe protection
5.6 WATER AND DUST CLEARING PROVISION IN CONSUMER PIPING
5.6.1 Provision of tailpipe
5.6.2 Design and location of a tailpipe
5.6.3 Marking of tailpipes
5.6.4 Tailpipes that terminate below ground level
5.6.5 Provision for dust clearing
5.7 CONSUMER PIPING FOR A HIGH-RISE BUILDING
5.7.1 General
5.7.2 Prohibition on flexible hoses
5.7.3 Plan of consumer piping to be displayed on site
5.7.4 Manual shut-off valve in riser and lateral
5.7.5 Support and flexibility of riser
5.7.6 Minimizing strain at a lateral
5.8 SUPPORT OF CONSUMER PIPING
5.8.1 Consumer piping support system requirements
5.8.2 Spacing of supporting devices
5.8.3 Diameter of rod hangers
5.9 USE OF HOSE ASSEMBLIES
5.9.1 Hose assembly requirements
5.9.2 Prohibited location of hose assembly connection point
5.9.3 Location of connection point for hose assembly
5.9.4 Hose assembly—Prohibited installation methods
5.9.5 Hose assembly—Operating conditions
5.9.6 Hose assembly connecting an appliance
5.9.7 Hose assembly connecting a portable or mobile appliance
5.10 QUICK-CONNECT DEVICES
5.10.1 Quick-connect device installed outside above ground
5.10.2 Quick-connect device socket installation method where subjected to water or dust
5.10.3 Quick-connect devices installed outdoors below ground
5.11 INSTALLING GAS EQUIPMENT
5.11.1 Consumer piping gas pressure regulators
5.11.2 Over-pressure protection
5.11.3 Protection of gas supply system from low pressure where a gas pressure-raising device or a gas engine is installed
5.11.4 Pressure test points
5.11.5 Venting
5.11.6 Sub-meters
5.12 GAS PRESSURE-RAISING DEVICES
5.12.1 Protection against pulsation
5.12.2 Connection requirements
5.12.3 Required controls
5.12.4 Requirements of downstream pipe and equipment
5.13 VENTILATION OF GAS EQUIPMENT
5.13.1 General
5.13.2 Natural ventilation to outside
5.13.3 Natural ventilation via adjacent room
5.13.4 Mechanical ventilation
5.13.5 Location of openings
5.13.6 Ventilation of an enclosure containing a meter or regulator and a gas pressure-raising device
5.13.7 Ventilation of an enclosure containing gas equipment and a gas appliance
SECTION 6 INSTALLING GAS APPLIANCES
6.1 REQUIREMENTS FOR GAS APPLIANCES
6.1.1 New Zealand requirements
6.1.2 Australian requirements
6.1.3 Appliance conversion
6.2 GENERAL INSTALLATION REQUIREMENTS
6.2.1 Determination of adequate gas supply
6.2.2 Manufacturer’s installation instructions
6.2.3 Restriction on flueless gas appliances
6.2.4 Restriction on appliance location
6.2.5 Temperature limitation on nearby combustible surface
6.2.6 Gas appliances using pressurized air or oxygen or having a standby gas connected
6.2.7 Automatic control to fail safe
6.2.8 Electrical requirements
6.2.9 Restoration of electricity supply
6.2.10 Gas appliance support
6.2.11 Earthquake restraint
6.2.12 Flexible connections for the prevention of vibration
6.2.13 Connection of gas appliance designed to move on castors, rollers or wheels
6.2.14 Gas appliance restraint where a hose assembly is used
6.2.15 Push-on connectors limited to connecting laboratory bunsen burners
6.3 GAS APPLIANCE LOCATION
6.3.1 Adverse effect of air movement systems
6.3.2 Protection from physical damage
6.3.3 Accessibility
6.3.4 Hazards to buildings or persons
6.3.5 Proximity of flammable goods or chemicals
6.3.6 Presence of water
6.3.7 Installation above a source of cooking vapour, steam or grease
6.3.8 Installation in a cupboard
6.3.9 Installation in a bedroom
6.3.10 Installation in a garage
6.3.11 Appliance in a roof space
6.3.12 Location of appliances in residential premises
6.3.13 Appliance on roof, wall or elevated structure in locations other than single residential premises
6.3.14 Appliance under a floor
6.3.15 Domestic gas barbeques and radiant gas heaters
6.4 AIR SUPPLY TO GAS APPLIANCES
6.4.1 Adequacy of air supply
6.4.2 Quality of air supply
6.4.3 Installation where atmosphere is contaminated
6.4.4 Air requirements for gas appliances
6.5 GAS SHUT-OFF WHEN AUTOMATIC FIRE EQUIPMENT OPERATES
6.5.1 Interlock of automatic fire-extinguishing equipment with gas supply
6.5.2 Interlock of automatic fire damper and gas supply
6.5.3 Gas shut-off controls interfaced with fire alarm systems
6.6 GAS APPLIANCE CONNECTION
6.6.1 Restriction on appliance connection
6.6.2 Pipe connection
6.6.3 Means of isolation
6.6.4 Means of disconnection
6.7 FLUE DESIGN
6.7.1 Provision of a flue
6.7.2 Effect on building strength or fire resistance
6.7.3 Material
6.7.4 Design requirements
6.7.5 Flue gases not to cause a nuisance
6.7.6 Common or combined flues
6.7.7 Draught diverters
6.7.8 Power flues
6.7.9 Flue cowls
6.7.10 Condensate drains
6.7.11 Use of existing flue or chimney
6.8 FLUE INSTALLATION
6.8.1 Provision for removal of gas appliance
6.8.2 Support independent of gas appliance
6.8.3 Soft-soldered flue joints
6.8.4 Flue joints
6.8.5 Weatherproofing through a roof or wall
6.8.6 Brick and masonry flues
6.8.7 Clearance around a draught diverter
6.8.8 Prohibited locations for flues
6.8.9 Concealed metal flues
6.8.10 Application of twin wall flues
6.8.11 Clearance between a single wall flue and a combustible surface
6.8.12 Protection of combustible surfaces
6.8.13 Protection of adjacent non-combustible materials from heat of flue
6.8.14 Clearance from wiring and other services
6.9 FLUE TERMINALS
6.9.1 Terminating an open flue—Location
6.9.2 Terminating a flue above a roof
6.9.3 Location of flue terminal of balanced flue appliance, room-sealed appliance, fan-assisted appliance or outdoor appliance
6.9.4 Termination of a flue under a covered area or in a recess
6.9.5 Terminating a flue in a roof space
6.10 ADDITIONAL REQUIREMENTS FOR INSTALLATION OF SPECIFIC GAS APPLIANCES
6.10.1 Domestic gas cooking appliances
6.10.2 Commercial catering equipment
6.10.3 Instantaneous water heaters
6.10.4 Storage water heaters
6.10.5 Pool heaters (including those for swimming, spa and therapeutic pools)
6.10.6 Space heaters
6.10.7 Overhead radiant heaters
6.10.8 Patio heaters
6.10.9 Decorative flame effect fires (Not flame effect gas space heaters)
6.10.10 Ducted air heaters
6.10.11 Air curtains
6.10.12 Direct fired air heaters
6.10.13 Overhead radiant tube heaters
6.10.14 Laundry dryers
6.10.15 Gas lights
6.10.16 Incinerators
6.10.17 Pottery kiln
6.10.18 Refrigerator
6.11 COMMISSIONING REQUIREMENTS
6.11.1 Australian requirements
6.11.2 New Zealand requirements
6.11.3 Commissioning of appliance
6.11.4 Commissioning requirements
APPENDIX A - CONVERSION FACTORS
APPENDIX B - REFERENCED DOCUMENTS
APPENDIX C - FIRE RESISTANT MATERIAL
C1 INTRODUCTION
C2 SPECIFICATION FOR FIRE RESISTANT MATERIAL
C3 EXAMPLES TO DETERMINE REQUIRED THICKNESS OF FIRE RESISTANT MATERIAL
C4 ACCEPTABLE METHODS OF PROTECTION
APPENDIX D - PURGING
D1 INTRODUCTION
D2 PRECAUTIONS BEFORE PURGING COMMENCES
D3 PURGING A SUB-METER
D4 PURGING A SMALL VOLUME INSTALLATION WITH GAS TO REMOVE AIR
D4.1 Pipe length in a small volume installation
D4.2 Commencing the purge
D4.3 Purging through an appliance fitted with an open burner
D4.4 Purging through an appliance fitted with a flame safeguard device
D5 PURGING A LARGE VOLUME GAS INSTALLATION
D6 PURGING CONSUMER PIPING TO REMOVE GAS
APPENDIX E - TESTING FOR GASTIGHTNESS
E1 INTRODUCTION
E2 LIMITATION OF TESTS
E3 LEAKAGE TESTING OF INSTALLATIONS
E3.1 New installations
E3.2 Additions and alterations to installations
E4 PIPEWORK TEST PROCEDURE
E5 INSTALLATION TEST PROCEDURE
E6 LEAKAGE TEST FOR EXISTING INSTALLATIONS
E7 TESTING A CONNECTION MADE AFTER A TEST PROCEDURE
E8 ADDITIONAL TESTS FOR LP GAS SYSTEMS
E8.1 Testing LP Gas piping upstream of first stage regulator
E9 ADDITIONAL TESTS FOR SYSTEMS WITH A PRESSURE RELIEF DEVICE
E10 SELECTING THE TEST INSTRUMENT
APPENDIX F - SIZING CONSUMER PIPING
F1 INTRODUCTION
F1.1 General
F1.2 Pipe conditions
F1.3 Fitting allowance
F1.4 Equations used
F1.5 Excessive gas velocity
F2 INFORMATION REQUIRED
F3 DESIGN PROCEDURE USING PIPE SIZING GRAPHS
F3.1 Introduction
F3.2 Worked example
F4 PIPE SIZING GRAPHS
F5 DESIGN PROCEDURE USING PIPE SIZING TABLES
F5.1 Introduction
F5.2 Worked example
F6 PIPE SIZING TABLES
APPENDIX G - DETERMINATION OF MAXIMUM BREATHER VENT ORIFICE SIZE FOR DEVICES NOT VENTED TO OUTSIDE ATMOSPHERE
G1 INTRODUCTION
G2 USING THE NOMOGRAMS
G3 EXAMPLE USING A NOMOGRAM
APPENDIX H - FLUE DESIGN
H1 Flue design for appliances with atmospheric burners
H1.1 Introduction
H1.2 Factors influencing flue design
H1.3 Designing individual appliance flues
H1.4 Common flues (combined and multiple flues)
H2 Power flue design
H2.1 Power flue applications
H2.2 Design requirements
APPENDIX I - APPLIANCES IN OUTDOOR AREAS
I1 DIAGRAMATIC REPRESENTATION OF OUTDOOR AREAS
I2 DOMESTIC GAS BARBECUES AND RADIANT GAS HEATERS
APPENDIX J - LP GAS CYLINDER LOCATIONS
J1 GENERAL
J2 CYLINDER REQUIREMENTS
J3 LOCATION OF CYLINDERS
J3.1 General
J3.2 Prohibited locations
J3.3 Cylinders on a verandah
J3.4 Cylinders in an enclosure or recess
J3.5 Cylinders under buildings
J3.6 Cylinders in public locations
J4 INSTALLATION
J4.1 Installing cylinders
J4.2 Cylinder connection
J5 CLEARANCES AROUND CYLINDERS
J6 CYLINDER REGULATORS
J7 LP GAS CYLINDER CAPACITY
J8 VAPORIZATION CAPACITY FOR CYLINDERS AND TANKS
APPENDIX K - GAS IN HIGH-RISE BUILDINGS
K1 INTRODUCTION
K2 GAS SUPPLY
K3 CONSUMER PIPING
K4 PIPE RISER SHAFTS
K5 CONSUMER PIPE LOCATION
K6 COMPONENTS TO BE ACCESSIBLE
K7 PIPE SUPPORT SYSTEMS
K7.1 Components to be considered
K7.2 Pipe anchor
K7.3 Pipe riser clamp
K7.4 Pipe guides
K7.5 Spring clip
K8 EXPANSION AND CONTRACTION OF CONSUMER PIPING AND BUILDINGS
K8.1 Thermal expansion
K8.2 Building shrinkage
K8.3 Design for expansion/contraction
K9 BRANCHES (OFF TAKES)
K10 VALVES
K10.1 Pipe riser isolation valves
K10.2 Off take isolation valves
K10.3 Apartment isolation valves
K11 PLAN OF PIPE
K12 BOOSTERS
APPENDIX LEXTRACTS FROM BUILDING CODES OF AUSTRALIA AND NEW ZEALAND
APPENDIX M - CONSUMER BILLING METER INSTALLATIONS
M1 FOR NEW ZEALAND
M1.1 General
M1.2 Exclusion areas and hazardous zones
M2 FOR AUSTRALIA
M2.1 Meter location
M2.2 Multiple meters
M2.3 Subsequent work
APPENDIX N - SPECIAL REQUIREMENTS IN AUSTRALIAN JURISDICTIONS
N1 INTRODUCTION
N2 TECHNICAL REGULATORS
N3 DETAILS OF SPECIAL LOCAL REQUIREMENTS
N3.1 Quick-connect devices
N3.2 Restriction on installation of a flueless space heater
N3.3 Restriction on installation of an instantaneous hot water unit within a roof space
N3.4 Replacement of flueless space heaters
Amendments
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AS/NZS 5601.1:2010 GAS INSTALLATIONS - GENERAL INSTALLATIONS
PREFACE
CONTENTS
SECTION 1 SCOPE AND GENERAL
1.1 SCOPE AND APPLICATION
1.2 EXCLUSIONS
1.3 COMPLIANCE
1.4 OCCUPATIONAL HEALTH AND SAFETY
1.5 INTERPRETATION
1.6 DEFINITIONS
1.6.1 Accessible
1.6.2 Appliance
1.6.3 Appliance gas pressure regulator
1.6.4 Bathroom
1.6.5 Bedroom
1.6.6 Breather vent
1.6.7 Burner
1.6.8 Caravan
1.6.9 Certified/Certification
1.6.10 Certifying body
1.6.11 Combustible material
1.6.12 Combustible surface
1.6.13 Combustion products
1.6.14 Competent person
1.6.15 Compressed natural gas (CNG)
1.6.16 Condensate
1.6.17 Condensation
1.6.18 Consumer piping
1.6.19 Cupboard
1.6.20 Cylinder
1.6.21 Decorative flame effect fire
1.6.22 DN (diametre nominale)
1.6.23 Double block and vent safety shut-off system
1.6.24 Draught diverter
1.6.25 Enclosure
1.6.26 Excess air
1.6.27 Excess flow valve
1.6.28 Exitway
1.6.29 Explosive limit
1.6.30 Fail safe (also see lock-out)
1.6.31 Fire damper
1.6.32 Fire-isolated passageway
1.6.33 Fire-isolated ramp
1.6.34 Fire-isolated stairway
1.6.35 Fire resistant material
1.6.36 Flame safeguard system
1.6.37 Flue
1.6.38 Flue cowl
1.6.39 Flue gases
1.6.40 Flue terminal
1.6.41 Gas
1.6.42 Gas consumption
1.6.43 Gasfitting (work)
1.6.44 Gas installation
1.6.45 Gas load
1.6.46 Gas meter
1.6.47 Gas meter assembly/Gas measurement system (GMS)
1.6.48 Gas pipework
1.6.49 Gas pressure regulator
1.6.50 Gastight
1.6.51 High-rise building
1.6.52 Hob
1.6.53 Hose assembly
1.6.54 Hot-tapping
1.6.55 Hot water boiler
1.6.56 Ignition source
1.6.57 Indoor(s)
1.6.58 Insulating joint
1.6.59 Interlock
1.6.60 Intrinsically safe
1.6.61 Isolation valve
1.6.62 Lock-out
1.6.63 Main run
1.6.64 Manual shut-off valve
1.6.65 Maximum allowable operating pressure (MAOP)
1.6.66 Maximum over-pressure
1.6.67 May
1.6.68 Multilayer pipe
1.6.69 Network operator
1.6.70 Nominal size (DN)/Nominal diameter (DN)
1.6.71 Non-return valve
1.6.72 Operating pressure
1.6.73 Outdoor(s)
1.6.74 Over-pressure protection
1.6.75 Permanent joint
1.6.76 Pipe fitting
1.6.77 Plant room
1.6.78 POL fitting (Prest-o-lite fitting)
1.6.79 Pool heater
1.6.80 Premises
1.6.81 Pressure
1.6.82 Pressure test point
1.6.83 Proprietary system
1.6.84 Purge or purging
1.6.85 Push-on connector
1.6.86 Quasi-outdoor(s)
1.6.87 Quick-connect device
1.6.88 Range hood
1.6.89 Rated working pressure
1.6.90 Residential garage
1.6.91 Riser
1.6.92 Safe path
1.6.93 Safety shut-off system
1.6.94 Safety shut-off valve
1.6.95 Shall
1.6.96 Should
1.6.97 Steam boiler
1.6.98 Storey
1.6.99 Swivel joint
1.6.100 Tailpipe
1.6.101 Tank
1.6.102 Technical Regulator
1.6.103 Temperature limit device
1.6.104 Trivet
1.6.105 Valve train
1.6.106 Vent line
1.6.107 Vent valve
1.6.108 Water heater
1.6.109 Wherever possible/where practicable
1.6.110 Wobbe Index
SECTION 2 PERFORMANCE BASED DESIGN AND OTHER ESSENTIAL REQUIREMENTS
2.1 GENERAL
2.2 GENERAL WORK AND SAFETY REQUIREMENTS
2.2.1 Verification of gas supply
2.2.2 Work on a gas installation
2.2.3 Sealing of open ends
2.2.4 Testing of consumer piping
2.2.5 Testing of gas installations
2.2.6 Safe practices and OHS
2.2.7 Increasing pressure of gas installations
2.2.8 Commissioning and recommissioning
2.2.9 Decommissioning
2.3 MATERIALS, FITTINGS AND COMPONENTS
2.3.1 Materials
2.3.2 Proprietary systems
2.3.3 Jointing
2.4 CONSUMER PIPING
2.4.1 General
2.4.2 Design
2.4.3 Prevention of reverse flow
2.4.4 Location
2.4.5 Support of consumer piping
2.4.6 Corrosion control
2.4.7 Provision for clearing condensate
2.4.8 Gas pressure regulators
2.4.9 Over-pressure protection
2.4.10 Pressure test points
2.4.11 Gas venting
2.4.12 Gas pressure raising devices
2.5 FLUES
2.5.1 General
2.5.2 Design
2.5.3 Materials
2.5.4 Installation
2.5.5 Location
2.5.6 Dampers
2.5.7 Flue terminals
2.5.8 Common flues
2.5.9 Power flues
2.5.10 Use of existing flues or chimneys
2.6 INSTALLING GAS APPLIANCES
2.6.1 Pre-installation
2.6.2 General installation requirements
2.6.3 Gas appliance location
2.6.4 Limitations on installation of an appliance
2.6.5 Ventilation of the gas appliance space and air supply to gas appliances
2.6.6 Valve trains
2.6.7 Gas appliance connection
2.6.8 Commissioning
SECTION 3 MEANS OF COMPLIANCE —GENERAL REQUIREMENTS AND SAFE WORK PRACTICES
3.1 GAS SUPPLY
3.2 GAS DEMAND
3.3 SAFE WORK PRACTICES
3.3.1 General
3.3.2 Isolating gas supply
3.3.3 Purging after completion of work
3.4 SEALING OF OPEN PIPE ENDS
3.4.1 Removal of debris
3.4.2 Open ends to be sealed while work is in progress
3.4.3 Outlet provided for future connection to be sealed
3.5 TESTING OF PIPING
3.5.1 Testing a new gas installation
3.5.2 Testing consumer piping after alteration, repair or extension
3.6 ACCEPTABLE SUBSTANCES FOR TESTING
3.7 HOT-TAPPING OF BRANCH FITTING TO CONSUMER PIPING
3.8 INCREASING THE OPERATING PRESSURE OF EXISTING CONSUMER PIPING
3.9 DEALING WITH DANGEROUS GAS INSTALLATIONS
3.10 METHODS OF LOCATING GAS LEAKS
3.11 SAFETY REQUIREMENTS IN THE VICINITY OF GAS LEAKS OR SUSPECTED GAS LEAKS
3.12 SAFE DISCHARGE OF STATIC ELECTRICITY
3.13 ELECTRICAL SAFETY BONDING OR BRIDGING
3.14 CLEARING A BLOCKAGE IN CONSUMER PIPING
SECTION 4 MATERIALS, FITTINGS AND COMPONENTS
4.1 GENERAL
4.1.1 Suitability for use
4.1.2 Reuse of materials and components
4.1.3 Mating parts
4.2 MATERIALS FOR CONSUMER PIPING
4.3 CONSUMER PIPING RESTRICTIONS
4.4 PROHIBITED TYPES OF JOINTS AND FITTINGS
4.5 PROPRIETARY SYSTEMS
4.5.1 Suitability for intended use
4.5.2 Installation of proprietary systems
4.5.3 Substitution of components
4.5.4 Identification of proprietary piping systems
4.6 MATERIAL BETWEEN LP GAS CYLINDER VALVE AND INLET TO FIRST REGULATOR
4.7 OTHER MATERIALS
4.7.1 Fire resistant material
4.7.2 Gasket material
4.7.3 Jointing compounds and materials
4.7.4 Vent line material
4.7.5 Flue material
4.8 COMPONENTS
4.8.1 Miscellaneous components
4.8.2 Manual shut-off valves
4.8.3 Hose assemblies
4.8.4 Swivel joints and couplings
SECTION 5 INSTALLING CONSUMER PIPING
5.1 GENERAL
5.1.1 Condition of pipe and pipe fittings
5.1.2 Prohibition of earthing through consumer piping
5.1.3 Protection from other materials
5.1.4 Storage and handling of pipe
5.1.5 Condition of pipe during installation
5.1.6 Restriction on repair of defective pipe or pipe fitting
5.1.7 Jointing
5.1.8 Restriction on use of thread sealant
5.1.9 Bending pipe
5.1.10 Re-making a flanged joint
5.1.11 Pipe installation not to reduce building strength or fire resistance
5.1.12 Identification of pipework
5.2 DESIGN OF CONSUMER PIPING
5.2.1 Pressure rating of piping and components
5.2.2 Appliance pressure rating
5.2.3 Requirements where pressurized air, oxygen or a stand by gas is to be used in conjunction with the fuel gas
5.2.4 Consumer piping size
5.2.5 Pipe size for consumer piping supplying a domestic type gas appliance
5.2.6 Flexibility of piping
5.2.7 Pipe alignment at expansion joint
5.2.8 Means of disconnection
5.2.9 Occupancy isolation
5.2.10 Building isolation
5.2.11 Isolation for specific installations
5.2.12 Provision of emergency valve (Steam boilers and hot water boilers)
5.2.13 Proprietary multilayer piping
5.3 LOCATION OF CONSUMER PIPING
5.3.1 Prohibited locations
5.3.2 Piping in an air duct, plenum ceiling, air handling plenum or ventilating duct
5.3.3 Piping not to be subject to physical damage
5.3.4 Separation from above-ground electrical equipment
5.3.5 Piping not to support an electrical conductor
5.3.6 Piping not to be exposed to liquid discharge
5.3.7 Above-ground piping not to touch the ground
5.3.8 Piping in a concealed location other than underground or embedded in concrete
5.3.9 Piping passing through a building’s exterior wall
5.3.10 Piping passing through walls and floors
5.3.11 Piping beneath a building and in the ground
5.3.12 Ventilation of concealed piping
5.3.13 Piping embedded in concrete
5.3.14 Piping in wooden joists
5.3.15 Piping in wooden plates and studs
5.3.16 Piping in steel framed buildings
5.3.17 Protection of multilayer piping
5.4 INSTALLATION OF CONSUMER PIPING UNDERGROUND
5.4.1 General
5.4.2 Bedding and support of pipe in the ground
5.4.3 Depth of cover
5.4.4 Quality of bedding and backfill
5.4.5 Consolidation of bedding and backfill material
5.4.6 Marker tape
5.4.7 Termination of plastic pipe and metallic continuation
5.4.8 Securing a riser
5.4.9 Separation from underground electrical cable
5.4.10 Separation from underground electrical earthing electrode
5.4.11 Separation from underground communication cable
5.4.12 Separation from underground services
5.4.13 Crossing other underground services
5.5 CORROSION CONTROL
5.5.1 Corrosion protection of bare steel
5.5.2 Corrosion protection of above-ground pipework
5.5.3 Joining of electrochemically incompatible materials
5.5.4 Requirement where coated steel pipe emerges from the ground
5.5.5 Requirement where consumer piping is to include cathodic protection
5.5.6 Proving effectiveness of pipe protection
5.6 WATER AND DUST CLEARING PROVISION IN CONSUMER PIPING
5.6.1 Provision of tailpipe
5.6.2 Design and location of a tailpipe
5.6.3 Marking of tailpipes
5.6.4 Tailpipes that terminate below ground level
5.6.5 Provision for dust clearing
5.7 CONSUMER PIPING FOR A HIGH-RISE BUILDING
5.7.1 General
5.7.2 Prohibition on flexible hoses
5.7.3 Plan of consumer piping to be displayed on site
5.7.4 Manual shut-off valve in riser and lateral
5.7.5 Support and flexibility of riser
5.7.6 Minimizing strain at a lateral
5.8 SUPPORT OF CONSUMER PIPING
5.8.1 Consumer piping support system requirements
5.8.2 Spacing of supporting devices
5.8.3 Diameter of rod hangers
5.9 USE OF HOSE ASSEMBLIES
5.9.1 Hose assembly requirements
5.9.2 Prohibited location of hose assembly connection point
5.9.3 Location of connection point for hose assembly
5.9.4 Hose assembly—Prohibited installation methods
5.9.5 Hose assembly—Operating conditions
5.9.6 Hose assembly connecting an appliance
5.9.7 Hose assembly connecting a portable or mobile appliance
5.10 QUICK-CONNECT DEVICES
5.10.1 Quick-connect device installed outside above ground
5.10.2 Quick-connect device socket installation method where subjected to water or dust
5.10.3 Quick-connect devices installed outdoors below ground
5.11 INSTALLING GAS EQUIPMENT
5.11.1 Consumer piping gas pressure regulators
5.11.2 Over-pressure protection
5.11.3 Protection of gas supply system from low pressure where a gas pressure-raising device or a gas engine is installed
5.11.4 Pressure test points
5.11.5 Venting
5.11.6 Sub-meters
5.12 GAS PRESSURE-RAISING DEVICES
5.12.1 Protection against pulsation
5.12.2 Connection requirements
5.12.3 Required controls
5.12.4 Requirements of downstream pipe and equipment
5.13 VENTILATION OF GAS EQUIPMENT
5.13.1 General
5.13.2 Natural ventilation to outside
5.13.3 Natural ventilation via adjacent room
5.13.4 Mechanical ventilation
5.13.5 Location of openings
5.13.6 Ventilation of an enclosure containing a meter or regulator and a gas pressure-raising device
5.13.7 Ventilation of an enclosure containing gas equipment and a gas appliance
SECTION 6 INSTALLING GAS APPLIANCES
6.1 REQUIREMENTS FOR GAS APPLIANCES
6.1.1 New Zealand requirements
6.1.2 Australian requirements
6.1.3 Appliance conversion
6.2 GENERAL INSTALLATION REQUIREMENTS
6.2.1 Determination of adequate gas supply
6.2.2 Manufacturer’s installation instructions
6.2.3 Restriction on flueless gas appliances
6.2.4 Restriction on appliance location
6.2.5 Temperature limitation on nearby combustible surface
6.2.6 Gas appliances using pressurized air or oxygen or having a standby gas connected
6.2.7 Automatic control to fail safe
6.2.8 Electrical requirements
6.2.9 Restoration of electricity supply
6.2.10 Gas appliance support
6.2.11 Earthquake restraint
6.2.12 Flexible connections for the prevention of vibration
6.2.13 Connection of gas appliance designed to move on castors, rollers or wheels
6.2.14 Gas appliance restraint where a hose assembly is used
6.2.15 Push-on connectors limited to connecting laboratory bunsen burners
6.3 GAS APPLIANCE LOCATION
6.3.1 Adverse effect of air movement systems
6.3.2 Protection from physical damage
6.3.3 Accessibility
6.3.4 Hazards to buildings or persons
6.3.5 Proximity of flammable goods or chemicals
6.3.6 Presence of water
6.3.7 Installation above a source of cooking vapour, steam or grease
6.3.8 Installation in a cupboard
6.3.9 Installation in a bedroom
6.3.10 Installation in a garage
6.3.11 Appliance in a roof space
6.3.12 Location of appliances in residential premises
6.3.13 Appliance on roof, wall or elevated structure in locations other than single residential premises
6.3.14 Appliance under a floor
6.3.15 Domestic gas barbeques and radiant gas heaters
6.4 AIR SUPPLY TO GAS APPLIANCES
6.4.1 Adequacy of air supply
6.4.2 Quality of air supply
6.4.3 Installation where atmosphere is contaminated
6.4.4 Air requirements for gas appliances
6.5 GAS SHUT-OFF WHEN AUTOMATIC FIRE EQUIPMENT OPERATES
6.5.1 Interlock of automatic fire-extinguishing equipment with gas supply
6.5.2 Interlock of automatic fire damper and gas supply
6.5.3 Gas shut-off controls interfaced with fire alarm systems
6.6 GAS APPLIANCE CONNECTION
6.6.1 Restriction on appliance connection
6.6.2 Pipe connection
6.6.3 Means of isolation
6.6.4 Means of disconnection
6.7 FLUE DESIGN
6.7.1 Provision of a flue
6.7.2 Effect on building strength or fire resistance
6.7.3 Material
6.7.4 Design requirements
6.7.5 Flue gases not to cause a nuisance
6.7.6 Common or combined flues
6.7.7 Draught diverters
6.7.8 Power flues
6.7.9 Flue cowls
6.7.10 Condensate drains
6.7.11 Use of existing flue or chimney
6.8 FLUE INSTALLATION
6.8.1 Provision for removal of gas appliance
6.8.2 Support independent of gas appliance
6.8.3 Soft-soldered flue joints
6.8.4 Flue joints
6.8.5 Weatherproofing through a roof or wall
6.8.6 Brick and masonry flues
6.8.7 Clearance around a draught diverter
6.8.8 Prohibited locations for flues
6.8.9 Concealed metal flues
6.8.10 Application of twin wall flues
6.8.11 Clearance between a single wall flue and a combustible surface
6.8.12 Protection of combustible surfaces
6.8.13 Protection of adjacent non-combustible materials from heat of flue
6.8.14 Clearance from wiring and other services
6.9 FLUE TERMINALS
6.9.1 Terminating an open flue—Location
6.9.2 Terminating a flue above a roof
6.9.3 Location of flue terminal of balanced flue appliance, room-sealed appliance, fan-assisted appliance or outdoor appliance
6.9.4 Termination of a flue under a covered area or in a recess
6.9.5 Terminating a flue in a roof space
6.10 ADDITIONAL REQUIREMENTS FOR INSTALLATION OF SPECIFIC GAS APPLIANCES
6.10.1 Domestic gas cooking appliances
6.10.2 Commercial catering equipment
6.10.3 Instantaneous water heaters
6.10.4 Storage water heaters
6.10.5 Pool heaters (including those for swimming, spa and therapeutic pools)
6.10.6 Space heaters
6.10.7 Overhead radiant heaters
6.10.8 Patio heaters
6.10.9 Decorative flame effect fires (Not flame effect gas space heaters)
6.10.10 Ducted air heaters
6.10.11 Air curtains
6.10.12 Direct fired air heaters
6.10.13 Overhead radiant tube heaters
6.10.14 Laundry dryers
6.10.15 Gas lights
6.10.16 Incinerators
6.10.17 Pottery kiln
6.10.18 Refrigerator
6.11 COMMISSIONING REQUIREMENTS
6.11.1 Australian requirements
6.11.2 New Zealand requirements
6.11.3 Commissioning of appliance
6.11.4 Commissioning requirements
APPENDIX A - CONVERSION FACTORS
APPENDIX B - REFERENCED DOCUMENTS
APPENDIX C - FIRE RESISTANT MATERIAL
C1 INTRODUCTION
C2 SPECIFICATION FOR FIRE RESISTANT MATERIAL
C3 EXAMPLES TO DETERMINE REQUIRED THICKNESS OF FIRE RESISTANT MATERIAL
C4 ACCEPTABLE METHODS OF PROTECTION
APPENDIX D - PURGING
D1 INTRODUCTION
D2 PRECAUTIONS BEFORE PURGING COMMENCES
D3 PURGING A SUB-METER
D4 PURGING A SMALL VOLUME INSTALLATION WITH GAS TO REMOVE AIR
D4.1 Pipe length in a small volume installation
D4.2 Commencing the purge
D4.3 Purging through an appliance fitted with an open burner
D4.4 Purging through an appliance fitted with a flame safeguard device
D5 PURGING A LARGE VOLUME GAS INSTALLATION
D6 PURGING CONSUMER PIPING TO REMOVE GAS
APPENDIX E - TESTING FOR GASTIGHTNESS
E1 INTRODUCTION
E2 LIMITATION OF TESTS
E3 LEAKAGE TESTING OF INSTALLATIONS
E3.1 New installations
E3.2 Additions and alterations to installations
E4 PIPEWORK TEST PROCEDURE
E5 INSTALLATION TEST PROCEDURE
E6 LEAKAGE TEST FOR EXISTING INSTALLATIONS
E7 TESTING A CONNECTION MADE AFTER A TEST PROCEDURE
E8 ADDITIONAL TESTS FOR LP GAS SYSTEMS
E8.1 Testing LP Gas piping upstream of first stage regulator
E9 ADDITIONAL TESTS FOR SYSTEMS WITH A PRESSURE RELIEF DEVICE
E10 SELECTING THE TEST INSTRUMENT
APPENDIX F - SIZING CONSUMER PIPING
F1 INTRODUCTION
F1.1 General
F1.2 Pipe conditions
F1.3 Fitting allowance
F1.4 Equations used
F1.5 Excessive gas velocity
F2 INFORMATION REQUIRED
F3 DESIGN PROCEDURE USING PIPE SIZING GRAPHS
F3.1 Introduction
F3.2 Worked example
F4 PIPE SIZING GRAPHS
F5 DESIGN PROCEDURE USING PIPE SIZING TABLES
F5.1 Introduction
F5.2 Worked example
F6 PIPE SIZING TABLES
APPENDIX G - DETERMINATION OF MAXIMUM BREATHER VENT ORIFICE SIZE FOR DEVICES NOT VENTED TO OUTSIDE ATMOSPHERE
G1 INTRODUCTION
G2 USING THE NOMOGRAMS
G3 EXAMPLE USING A NOMOGRAM
APPENDIX H - FLUE DESIGN
H1 Flue design for appliances with atmospheric burners
H1.1 Introduction
H1.2 Factors influencing flue design
H1.3 Designing individual appliance flues
H1.4 Common flues (combined and multiple flues)
H2 Power flue design
H2.1 Power flue applications
H2.2 Design requirements
APPENDIX I - APPLIANCES IN OUTDOOR AREAS
I1 DIAGRAMATIC REPRESENTATION OF OUTDOOR AREAS
I2 DOMESTIC GAS BARBECUES AND RADIANT GAS HEATERS
APPENDIX J - LP GAS CYLINDER LOCATIONS
J1 GENERAL
J2 CYLINDER REQUIREMENTS
J3 LOCATION OF CYLINDERS
J3.1 General
J3.2 Prohibited locations
J3.3 Cylinders on a verandah
J3.4 Cylinders in an enclosure or recess
J3.5 Cylinders under buildings
J3.6 Cylinders in public locations
J4 INSTALLATION
J4.1 Installing cylinders
J4.2 Cylinder connection
J5 CLEARANCES AROUND CYLINDERS
J6 CYLINDER REGULATORS
J7 LP GAS CYLINDER CAPACITY
J8 VAPORIZATION CAPACITY FOR CYLINDERS AND TANKS
APPENDIX K - GAS IN HIGH-RISE BUILDINGS
K1 INTRODUCTION
K2 GAS SUPPLY
K3 CONSUMER PIPING
K4 PIPE RISER SHAFTS
K5 CONSUMER PIPE LOCATION
K6 COMPONENTS TO BE ACCESSIBLE
K7 PIPE SUPPORT SYSTEMS
K7.1 Components to be considered
K7.2 Pipe anchor
K7.3 Pipe riser clamp
K7.4 Pipe guides
K7.5 Spring clip
K8 EXPANSION AND CONTRACTION OF CONSUMER PIPING AND BUILDINGS
K8.1 Thermal expansion
K8.2 Building shrinkage
K8.3 Design for expansion/contraction
K9 BRANCHES (OFF TAKES)
K10 VALVES
K10.1 Pipe riser isolation valves
K10.2 Off take isolation valves
K10.3 Apartment isolation valves
K11 PLAN OF PIPE
K12 BOOSTERS
APPENDIX LEXTRACTS FROM BUILDING CODES OF AUSTRALIA AND NEW ZEALAND
APPENDIX M - CONSUMER BILLING METER INSTALLATIONS
M1 FOR NEW ZEALAND
M1.1 General
M1.2 Exclusion areas and hazardous zones
M2 FOR AUSTRALIA
M2.1 Meter location
M2.2 Multiple meters
M2.3 Subsequent work
APPENDIX N - SPECIAL REQUIREMENTS IN AUSTRALIAN JURISDICTIONS
N1 INTRODUCTION
N2 TECHNICAL REGULATORS
N3 DETAILS OF SPECIAL LOCAL REQUIREMENTS
N3.1 Quick-connect devices
N3.2 Restriction on installation of a flueless space heater
N3.3 Restriction on installation of an instantaneous hot water unit within a roof space
N3.4 Replacement of flueless space heaters
Amendments
AS/NZS 5601.1:2010
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