AS/NZS 1677.2:1998
Refrigerating systems - Safety requirements for fixed applications
Specifies requirements for the safety aspects, in terms of the design, construction, installation and inspection of refrigerating appliances, systems and ancillary equipment intended for use or installation in institutional, public assembly, residential, commercial and industrial occupancies. It applies to new refrigerating systems, to extensions and modifications of existing systems and to used systems on being reinstalled and operated at another site. It also applies in the case of the conversion of a system for use with another refrigerant. It does not apply to household refrigerators.
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AS/NZS 1677.2:1998 REFRIGERATING SYSTEMS - SAFETY REQUIREMENTS FOR FIXED APPLICATIONS
PREFACE
CONTENTS
SECTION 1 SCOPE AND GENERAL
1.1 SCOPE
1.2 PERFORMANCE REQUIREMENTS
1.3 REFERENCED DOCUMENTS
1.4 DEFINITIONS
1.4.1 Absorption refrigerating system (absorption refrigerating system)
1.4.2 Breathing apparatus
1.4.3 Bursting disc
1.4.4 Changeover device
1.4.5 Charge
1.4.6 Competent person
1.4.7 Component
1.4.8 Compressor
1.4.9 Condenser
1.4.10 Condensing unit
1.4.11 Cool room
1.4.12 Cooling system
1.4.13 Design pressure
1.4.14 Detector (leak detector)
1.4.15 Evaporator
1.4.16 Exit
1.4.17 Exit passageway
1.4.18 Flanged joint
1.4.19 Flared joint
1.4.20 Fusible plug or fusible component
1.4.21 Hallway
1.4.22 Heat pump system
1.4.23 High pressure side
1.4.24 Ignition source
1.4.25 Individual system
1.4.26 Internal gross volume
1.4.27 Isolating valve
1.4.28 Leakage test pressure
1.4.29 Limited charge system
1.4.30 Liquid receiver
1.4.31 Lobby
1.4.32 Low pressure side
1.4.33 Machinery
1.4.34 Machinery room
1.4.35 Maximum charge
1.4.36 Maximum operating pressure (p)
1.4.37 Non-positive displacement compressor
1.4.38 Occupied space
1.4.39 Piping
1.4.40 Positive displacement compressor
1.4.41 Pressure limiting device
1.4.42 Pressure relief device
1.4.43 Pressure relieve valve
1.4.44 Pressure vessel
1.4.45 Receiver
1.4.46 Recovery
1.4.47 Recycle
1.4.48 Reclaim
1.4.49 Refrigerated space
1.4.50 Refrigerating system
1.4.51 Secondary refrigerant
1.4.52 Self-contained system
1.4.53 Special machinery room
1.4.54 Strength test pressure
1.4.55 Sudden major release
1.4.56 Type test
1.4.57 Unit system
1.4.58 Vent
1.4.59 Vestibule with doors (air lock)
SECTION 2 SYSTEM SELECTION
2.1 SYSTEM DESIGNATION
2.2 OCCUPANCY CLASSIFICATION
2.3 REFRIGERANT GROUP AND COOLING SYSTEM
2.4 MULTIPLE OCCUPANCIES
2.5 MAXIMUM CHARGE OF REFRIGERANTS OF GROUPS A1 AND A2
2.5.1 General
2.5.2 Direct and indirect open cooling systems
2.5.3 Category III occupancies
2.5.4 Indirect vented open, indirect closed, indirect vented closed and double indirect cooling systems
2.6 MAXIMUM CHARGE OF REFRIGERANT OF GROUP A3
2.6.1 General
2.6.2 Category I occupancies
2.6.3 Category II occupancies
2.6.4 Category III occupancies
2.7 MAXIMUM CHARGE OF REFRIGERANTS OF GROUP B1 AND B
2.7.1 Direct, indirect open and indirect vented open systems
2.7.2 Indirect closed, indirect vented closed and double indirect cooling systems
2.8 SECONDARY REFRIGERANTS
2.9 CRITICAL TEMPERATURES
2.10 COMPATIBILITY
2.11 COMBINATION SYSTEMS
2.12 ACCUMULATION OF HEAVIER-THAN-AIR REFRIGERANTS
2.12.1 Group A1, A2 and B1
2.12.2 Group A3, and B2
SECTION 3 DESIGN AND CONSTRUCTION
3.1 MAXIMUM OPERATING PRESSURE (p)
3.1.1 General
3.1.2 Specific systems
3.1.3 General systems
3.2 COMPONENT DESIGN PRESSURE
3.3 UNIT SYSTEMS AND SELF-CONTAINED SYSTEMS
3.4 PRESSURE VESSELS
3.4.1 General
3.4.2 Strength
3.4.3 Supports
3.5 HEAT EXCHANGERS
3.6 PIPING AND FITTINGS
3.6.1 General
3.6.2 Copper pipe
3.6.3 Liquid hammer in systems
3.6.4 Protection devices
3.6.5 Long runs
3.6.6 Flexible pipe elements
3.6.7 Possible misuse
3.6.8 Pipe connections
3.6.8.1 General
3.6.8.2 Non-detachable joints
3.6.8.3 Detachable joints
3.6.9 Valves
3.6.9.1 General
3.6.9.2 Operation by unauthorized persons
3.6.9.3 Isolating valves
3.6.9.4 Capped valves
3.6.9.5 Rapid closing valves
3.6.10 Service couplings
3.7 PROTECTION AGAINST EXCESS PRESSURE
3.7.1 General
3.7.2 Protecting devices
3.7.2.1 Pressure relief devices
3.7.2.2 Pressure limiting devices
3.7.3 Application of the protecting devices
3.7.3.1 Protection of the refrigerating system
3.7.3.2 Protection of machinery components
3.7.3.3 Protection of pressure vessels
3.7.3.4 Arrangement of protecting devices
3.7.3.5 Type tested pressure limiting devices
3.7.3.6 Application of pressure limiting devices
3.7.4 Discharge from pressure relief devices
3.7.4.1 Discharge capacity of pressure vessel
3.7.4.2 Discharge capacity of pressure relief valves
3.7.4.3 Discharge capacity of bursting discs and fusible plugs
3.7.4.4 Discharge piping from pressure relief devices
3.7.4.5 Safety
3.7.5 Precautions against environmental effects
3.8 ARRANGEMENT OF PRESSURE GAUGES
3.8.1 General
3.8.2 Retesting
3.8.3 Steam heating jackets
3.8.4 Cleaning and defrosting
3.9 LIQUID LEVEL INDICATORS
SECTION 4 SITE AND INSTALLATION
4.1 PEDESTRIAN THOROUGHFARES
4.2 SAFETY PROVISIONS FOR PERSONNEL IN REFRIGERATED SPACES
4.3 LOCATION OF REFRIGERANT PIPING
4.3.1 General
4.3.2 Piping in hallways, lobbies, rooms and stairways
4.3.2.1 General
4.3.2.2 A1 and A2 refrigerants
4.3.2.3 Other refrigerants
4.3.3 Fire precautions
4.4 MACHINERY AND EQUIPMENT IN THE OPEN AIR
4.5 PROTECTION OF FANS AND OTHER MOVING MACHINERY
4.6 LIGHTING
4.7 MACHINERY ROOMS
4.7.1 General
4.7.2 Machinery room ventilation
4.7.3 Machinery supports
4.7.4 Special machinery rooms
4.7.5 Protection against explosion
4.7.6 Flammable refrigerants
4.7.6.1 General
4.7.6.2 Ammonia
4.8 REFRIGERANT LEAK DETECTORS
4.8.1 Occupied spaces
4.8.2 Machinery rooms
4.8.2.1 Detector set points
4.8.2.2 Detector locations
4.8.2.3 Alarm initiation
4.9 ELECTRICAL INSTALLATIONS
4.9.1 General
4.9.2 Electrical supplies
4.9.2.1 Main power supply
4.9.2.2 Mechanical ventilation
4.9.2.3 Lighting
4.9.2.4 Alarm system
4.9.3 Condensation
SECTION 5 TESTING, INSPECTION, DOCUMENTATION AND MARKING
5.1 TESTING
5.1.1 General
5.1.2 Component testing
5.1.3 System testing
5.1.3.1 General
5.1.3.2 Repeat pressure tests
5.2 INSPECTION
5.2.1 General
5.2.2. Pressure vessels
5.2.3 Pressure piping
5.3 DOCUMENTATION
5.3.1 Material test certificates
5.3.2 Strength test and repeat test certificates
5.4 MARKING
5.4.1 Marking of refrigerating systems installed or modified on site
5.4.2 Marking of compressors, unit systems and liquid refrigerant pumps
5.4.3 Marking of pipes
5.4.4 Marking of pressure vessels
5.4.5 Marking of other parts
SECTION 6 OPERATION AND MAINTENANCE
6.1 CHARGING AND DISCHARGING REFRIGERANT
6.1.1 Charging
6.1.2 Discharging
6.2 OPERATING AND MAINTENANCE MANUAL
6.2.1 Provision of an operating and maintenance manual
6.2.2 Contents of the operating and maintenance manual
6.3 PRESSURE EQUIPMENT
6.4 PERSONAL PROTECTIVE EQUIPMENT
6.4.1 Respiratory protection
6.4.2 Protective clothing
6.4.3 Location and storage
APPENDIX A - LIST OF REFERENCED DOCUMENTS
APPENDIX B - MATERIALS
B1 GENERAL
B2 FERROUS METALS
B2.1 Iron
B2.2 Steel
B2.3 High alloy steel
B3 NON-FERROUS METALS AND THEIR ALLOYS (CAST, FORGED, ROLLED AND DRAWN)
B3.1 Copper and copper alloys
B3.2 Aluminium and aluminium alloys
B3.3 Magnesium
B3.4 Zinc and zinc alloys
B4 BRAZING ALLOYS
B5 NON-METALLIC MATERIALS
B5.1 Flexible hoses and packing materials
B5.2 Glass
APPENDIX C - RELATIONSHIP BETWEEN MAXIMUM OPERATING PRESSURE AND OTHER PRESSURES
APPENDIX D - GUIDE TO THE SELECTION OF ELECTRICAL APPARATUS FOR HAZARDOUS (POTENTIALLY EXPLOSIVE) AREAS
APPENDIX E - RECOMMENDED ASSESSMENT PROCEDURE FOR THE USE OF A3 REFRIGERANT
E1 GENERAL
E2 SITE SURVEY
E3 MANUFACTURERS ADVICE
E4 OCCUPANCY CLASSIFICATION
E5 SYSTEM ASSESSMENT
E6 HAZARDOUS ZONE ASSESSMENT
E7 ELECTRICAL EQUIPMENT SUITABILITY
E8 EXCLUSION ZONES FOR SOURCES OF IGNITION
E9 FACTORS PREVENTING THE DISPERSAL OF LEAKAGE
E10 VENTILATION
E11 GAS DETECTION SYSTEM
E12 LEAK SEALING
E13 OPERATION AND MAINTENANCE
APPENDIX F - GUIDE TO THE OPERATION AND MAINTENANCE OF COMMERCIAL AND INDUSTRIAL REFRIGERATING APPLIANCES AND SYSTEMS IN RELATIO
F1 GENERAL
F2 OPERATIONAL INSTRUCTIONS
F3 PERSONNEL INSTRUCTIONS
F3.1 Responsibilities of the owner
F3.2 General instructions
F3.3 Safety of personnel in cool rooms
F3.3.1 General
F3.3.2 Personnel levels
F3.3.3 Personnel checks
F4 OPERATING PRECAUTIONS
F4.1 Protection of compressors from liquid refrigerant and oil entering the inlet connection
F4.2 Protection of persons from fans and other moving machinery
F4.3 Transfer, substitution and storage of refrigerants
F5 MAINTENANCE AND DECOMMISSIONING
F5.1 General
F5.2 Repair of faults and leakages
F5.3 Pressure gauges and safety instruments/controls
F5.4 Repairs (use of arc and flame producing equipment)
F5.5 Decommissioning
F5.6 Discharging
F5.7 Gas detectors
F6 PROTECTION EQUIPMENT
F6.1 General
F6.2 Fire extinguishing equipment
F6.2.1 General
F6.2.2 Alarms
F6.2.3 Sprinkler systems
F6.3 Personnel protective equipment
F6.3.1 General
F6.3.2 Respiratory equipment for Group B2 refrigerants
F6.3.3 Training
F6.4 First aid equipment
APPENDIX G - REFRIGERANT DETECTION IN MACHINERY ROOMS
G1 GENERAL
G2 USE OF DETECTORS
G2.1 Area of coverage
G2.2 Machinery rooms
G2.3 Maintenance
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Related Information
Electricity (Safety) Regulations 2010
Ministry: WorkSafe New Zealand: Energy Safety
Section: Schedule 2
Citation context:Refers to 1677.2:1998(AS/NZS)A2. AS/NZS 1677.2 (means) AS/NZS 1677.2:1998: Refrigerating systems - Safety requirements for fixed applications: including Amendments 1 and 2
Electricity (Safety) Regulations 2010
Ministry: WorkSafe New Zealand: Energy Safety
Section: Schedule 2
Citation context:AS/NZS 1677.2 (means) AS/NZS 1677.2:1998: Refrigerating systems - Safety requirements for fixed applications: including Amendments 1 and 2
Electricity (Safety) Regulations 2010
Ministry: WorkSafe New Zealand: Energy Safety
Section: Schedule 2
Citation context:Refers to 1677.2:1998(AS/NZS)A1.
Approved Code Of Practice For Pressure Equipment (Excluding Boilers) 2001
Ministry: WorkSafe New Zealand
Section: 5.4.2(5)
Citation context:Pressure vessels for refrigeration systems shall be designed in accordance with AS/NZS 1677.
Approved Code Of Practice For Pressure Equipment (Excluding Boilers) 2001
Ministry: WorkSafe New Zealand
Section: 6.4.2
Citation context:Refrigeration piping systems shall be designed in accordance with ... and AS/NZS 1677 and this code.
Approved Code Of Practice For Pressure Equipment (Excluding Boilers) 2001
Ministry: WorkSafe New Zealand
Section: Schedule C
Citation context:AS/NZS 1677 Parts 1 & 2 (Latest Editions) are listed as referenced Standards
Electricity (Safety) Regulations 2010
Ministry: WorkSafe New Zealand: Energy Safety
Section: 60(3)
Citation context:If a person installs any of the following so that it complies with Part 2 of AS/NZS 3000, the person must also ensure that the installation complies with the standards indicated: (a) a refrigeration system (but not a refrigeration appliance): AS/NZS 1677.
Electricity (Safety) Regulations 2010
Ministry: WorkSafe New Zealand: Energy Safety
Section: 60(3)
Citation context:Refers to 1677.2:1998(AS/NZS)A2. If a person installs any of the following so that it complies with Part 2 of AS/NZS 3000, the person must also ensure that the installation complies with the standards indicated: (a) a refrigeration system (but not a refrigeration appliance): AS/NZS 1677.
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AS/NZS 1677.2:1998 REFRIGERATING SYSTEMS - SAFETY REQUIREMENTS FOR FIXED APPLICATIONS
PREFACE
CONTENTS
SECTION 1 SCOPE AND GENERAL
1.1 SCOPE
1.2 PERFORMANCE REQUIREMENTS
1.3 REFERENCED DOCUMENTS
1.4 DEFINITIONS
1.4.1 Absorption refrigerating system (absorption refrigerating system)
1.4.2 Breathing apparatus
1.4.3 Bursting disc
1.4.4 Changeover device
1.4.5 Charge
1.4.6 Competent person
1.4.7 Component
1.4.8 Compressor
1.4.9 Condenser
1.4.10 Condensing unit
1.4.11 Cool room
1.4.12 Cooling system
1.4.13 Design pressure
1.4.14 Detector (leak detector)
1.4.15 Evaporator
1.4.16 Exit
1.4.17 Exit passageway
1.4.18 Flanged joint
1.4.19 Flared joint
1.4.20 Fusible plug or fusible component
1.4.21 Hallway
1.4.22 Heat pump system
1.4.23 High pressure side
1.4.24 Ignition source
1.4.25 Individual system
1.4.26 Internal gross volume
1.4.27 Isolating valve
1.4.28 Leakage test pressure
1.4.29 Limited charge system
1.4.30 Liquid receiver
1.4.31 Lobby
1.4.32 Low pressure side
1.4.33 Machinery
1.4.34 Machinery room
1.4.35 Maximum charge
1.4.36 Maximum operating pressure (p)
1.4.37 Non-positive displacement compressor
1.4.38 Occupied space
1.4.39 Piping
1.4.40 Positive displacement compressor
1.4.41 Pressure limiting device
1.4.42 Pressure relief device
1.4.43 Pressure relieve valve
1.4.44 Pressure vessel
1.4.45 Receiver
1.4.46 Recovery
1.4.47 Recycle
1.4.48 Reclaim
1.4.49 Refrigerated space
1.4.50 Refrigerating system
1.4.51 Secondary refrigerant
1.4.52 Self-contained system
1.4.53 Special machinery room
1.4.54 Strength test pressure
1.4.55 Sudden major release
1.4.56 Type test
1.4.57 Unit system
1.4.58 Vent
1.4.59 Vestibule with doors (air lock)
SECTION 2 SYSTEM SELECTION
2.1 SYSTEM DESIGNATION
2.2 OCCUPANCY CLASSIFICATION
2.3 REFRIGERANT GROUP AND COOLING SYSTEM
2.4 MULTIPLE OCCUPANCIES
2.5 MAXIMUM CHARGE OF REFRIGERANTS OF GROUPS A1 AND A2
2.5.1 General
2.5.2 Direct and indirect open cooling systems
2.5.3 Category III occupancies
2.5.4 Indirect vented open, indirect closed, indirect vented closed and double indirect cooling systems
2.6 MAXIMUM CHARGE OF REFRIGERANT OF GROUP A3
2.6.1 General
2.6.2 Category I occupancies
2.6.3 Category II occupancies
2.6.4 Category III occupancies
2.7 MAXIMUM CHARGE OF REFRIGERANTS OF GROUP B1 AND B
2.7.1 Direct, indirect open and indirect vented open systems
2.7.2 Indirect closed, indirect vented closed and double indirect cooling systems
2.8 SECONDARY REFRIGERANTS
2.9 CRITICAL TEMPERATURES
2.10 COMPATIBILITY
2.11 COMBINATION SYSTEMS
2.12 ACCUMULATION OF HEAVIER-THAN-AIR REFRIGERANTS
2.12.1 Group A1, A2 and B1
2.12.2 Group A3, and B2
SECTION 3 DESIGN AND CONSTRUCTION
3.1 MAXIMUM OPERATING PRESSURE (p)
3.1.1 General
3.1.2 Specific systems
3.1.3 General systems
3.2 COMPONENT DESIGN PRESSURE
3.3 UNIT SYSTEMS AND SELF-CONTAINED SYSTEMS
3.4 PRESSURE VESSELS
3.4.1 General
3.4.2 Strength
3.4.3 Supports
3.5 HEAT EXCHANGERS
3.6 PIPING AND FITTINGS
3.6.1 General
3.6.2 Copper pipe
3.6.3 Liquid hammer in systems
3.6.4 Protection devices
3.6.5 Long runs
3.6.6 Flexible pipe elements
3.6.7 Possible misuse
3.6.8 Pipe connections
3.6.8.1 General
3.6.8.2 Non-detachable joints
3.6.8.3 Detachable joints
3.6.9 Valves
3.6.9.1 General
3.6.9.2 Operation by unauthorized persons
3.6.9.3 Isolating valves
3.6.9.4 Capped valves
3.6.9.5 Rapid closing valves
3.6.10 Service couplings
3.7 PROTECTION AGAINST EXCESS PRESSURE
3.7.1 General
3.7.2 Protecting devices
3.7.2.1 Pressure relief devices
3.7.2.2 Pressure limiting devices
3.7.3 Application of the protecting devices
3.7.3.1 Protection of the refrigerating system
3.7.3.2 Protection of machinery components
3.7.3.3 Protection of pressure vessels
3.7.3.4 Arrangement of protecting devices
3.7.3.5 Type tested pressure limiting devices
3.7.3.6 Application of pressure limiting devices
3.7.4 Discharge from pressure relief devices
3.7.4.1 Discharge capacity of pressure vessel
3.7.4.2 Discharge capacity of pressure relief valves
3.7.4.3 Discharge capacity of bursting discs and fusible plugs
3.7.4.4 Discharge piping from pressure relief devices
3.7.4.5 Safety
3.7.5 Precautions against environmental effects
3.8 ARRANGEMENT OF PRESSURE GAUGES
3.8.1 General
3.8.2 Retesting
3.8.3 Steam heating jackets
3.8.4 Cleaning and defrosting
3.9 LIQUID LEVEL INDICATORS
SECTION 4 SITE AND INSTALLATION
4.1 PEDESTRIAN THOROUGHFARES
4.2 SAFETY PROVISIONS FOR PERSONNEL IN REFRIGERATED SPACES
4.3 LOCATION OF REFRIGERANT PIPING
4.3.1 General
4.3.2 Piping in hallways, lobbies, rooms and stairways
4.3.2.1 General
4.3.2.2 A1 and A2 refrigerants
4.3.2.3 Other refrigerants
4.3.3 Fire precautions
4.4 MACHINERY AND EQUIPMENT IN THE OPEN AIR
4.5 PROTECTION OF FANS AND OTHER MOVING MACHINERY
4.6 LIGHTING
4.7 MACHINERY ROOMS
4.7.1 General
4.7.2 Machinery room ventilation
4.7.3 Machinery supports
4.7.4 Special machinery rooms
4.7.5 Protection against explosion
4.7.6 Flammable refrigerants
4.7.6.1 General
4.7.6.2 Ammonia
4.8 REFRIGERANT LEAK DETECTORS
4.8.1 Occupied spaces
4.8.2 Machinery rooms
4.8.2.1 Detector set points
4.8.2.2 Detector locations
4.8.2.3 Alarm initiation
4.9 ELECTRICAL INSTALLATIONS
4.9.1 General
4.9.2 Electrical supplies
4.9.2.1 Main power supply
4.9.2.2 Mechanical ventilation
4.9.2.3 Lighting
4.9.2.4 Alarm system
4.9.3 Condensation
SECTION 5 TESTING, INSPECTION, DOCUMENTATION AND MARKING
5.1 TESTING
5.1.1 General
5.1.2 Component testing
5.1.3 System testing
5.1.3.1 General
5.1.3.2 Repeat pressure tests
5.2 INSPECTION
5.2.1 General
5.2.2. Pressure vessels
5.2.3 Pressure piping
5.3 DOCUMENTATION
5.3.1 Material test certificates
5.3.2 Strength test and repeat test certificates
5.4 MARKING
5.4.1 Marking of refrigerating systems installed or modified on site
5.4.2 Marking of compressors, unit systems and liquid refrigerant pumps
5.4.3 Marking of pipes
5.4.4 Marking of pressure vessels
5.4.5 Marking of other parts
SECTION 6 OPERATION AND MAINTENANCE
6.1 CHARGING AND DISCHARGING REFRIGERANT
6.1.1 Charging
6.1.2 Discharging
6.2 OPERATING AND MAINTENANCE MANUAL
6.2.1 Provision of an operating and maintenance manual
6.2.2 Contents of the operating and maintenance manual
6.3 PRESSURE EQUIPMENT
6.4 PERSONAL PROTECTIVE EQUIPMENT
6.4.1 Respiratory protection
6.4.2 Protective clothing
6.4.3 Location and storage
APPENDIX A - LIST OF REFERENCED DOCUMENTS
APPENDIX B - MATERIALS
B1 GENERAL
B2 FERROUS METALS
B2.1 Iron
B2.2 Steel
B2.3 High alloy steel
B3 NON-FERROUS METALS AND THEIR ALLOYS (CAST, FORGED, ROLLED AND DRAWN)
B3.1 Copper and copper alloys
B3.2 Aluminium and aluminium alloys
B3.3 Magnesium
B3.4 Zinc and zinc alloys
B4 BRAZING ALLOYS
B5 NON-METALLIC MATERIALS
B5.1 Flexible hoses and packing materials
B5.2 Glass
APPENDIX C - RELATIONSHIP BETWEEN MAXIMUM OPERATING PRESSURE AND OTHER PRESSURES
APPENDIX D - GUIDE TO THE SELECTION OF ELECTRICAL APPARATUS FOR HAZARDOUS (POTENTIALLY EXPLOSIVE) AREAS
APPENDIX E - RECOMMENDED ASSESSMENT PROCEDURE FOR THE USE OF A3 REFRIGERANT
E1 GENERAL
E2 SITE SURVEY
E3 MANUFACTURERS ADVICE
E4 OCCUPANCY CLASSIFICATION
E5 SYSTEM ASSESSMENT
E6 HAZARDOUS ZONE ASSESSMENT
E7 ELECTRICAL EQUIPMENT SUITABILITY
E8 EXCLUSION ZONES FOR SOURCES OF IGNITION
E9 FACTORS PREVENTING THE DISPERSAL OF LEAKAGE
E10 VENTILATION
E11 GAS DETECTION SYSTEM
E12 LEAK SEALING
E13 OPERATION AND MAINTENANCE
APPENDIX F - GUIDE TO THE OPERATION AND MAINTENANCE OF COMMERCIAL AND INDUSTRIAL REFRIGERATING APPLIANCES AND SYSTEMS IN RELATIO
F1 GENERAL
F2 OPERATIONAL INSTRUCTIONS
F3 PERSONNEL INSTRUCTIONS
F3.1 Responsibilities of the owner
F3.2 General instructions
F3.3 Safety of personnel in cool rooms
F3.3.1 General
F3.3.2 Personnel levels
F3.3.3 Personnel checks
F4 OPERATING PRECAUTIONS
F4.1 Protection of compressors from liquid refrigerant and oil entering the inlet connection
F4.2 Protection of persons from fans and other moving machinery
F4.3 Transfer, substitution and storage of refrigerants
F5 MAINTENANCE AND DECOMMISSIONING
F5.1 General
F5.2 Repair of faults and leakages
F5.3 Pressure gauges and safety instruments/controls
F5.4 Repairs (use of arc and flame producing equipment)
F5.5 Decommissioning
F5.6 Discharging
F5.7 Gas detectors
F6 PROTECTION EQUIPMENT
F6.1 General
F6.2 Fire extinguishing equipment
F6.2.1 General
F6.2.2 Alarms
F6.2.3 Sprinkler systems
F6.3 Personnel protective equipment
F6.3.1 General
F6.3.2 Respiratory equipment for Group B2 refrigerants
F6.3.3 Training
F6.4 First aid equipment
APPENDIX G - REFRIGERANT DETECTION IN MACHINERY ROOMS
G1 GENERAL
G2 USE OF DETECTORS
G2.1 Area of coverage
G2.2 Machinery rooms
G2.3 Maintenance
ASNZS1677.2A1.pdf
ASNZS1677.2A2.pdf
AS/NZS 1677.2:1998
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