AS 2022-1983

1 - AS 2022-1983 SAA ANHYDROUS AMMONIA CODE
4 - PREFACE
5 - CONTENTS
6 - SECTION 1. SCOPE AND GENERAL
6 - 1.1 SCOPE
6 - 1.2 APPLICATION
6 - 1.3 NEW DESIGNS AND INNOVATIONS
6 - 1.4 INTERPRETATIONS
6 - 1.5 REFERENCED DOCUMENTS
6 - 1.6 DEFINITIONS
6 - 1.6.1 Anhydrous ammonia
6 - 1.6.2 Approved or approval
6 - 1.6.3 Authorized person
6 - 1.6.4 Capacity (of a tank or cylinder)
6 - 1.6.5 Consumer
6 - 1.6.6 Container
6 - 1.6.7 Cylinder
6 - 1.6.8 Design pressure
6 - 1.6.9 Design temperature
6 - 1.6.10 Excess-flow valve
6 - 1.6.11 Filler
6 - 1.6.12 Mass filling ratio
6 - 1.6.13 Fixed storage system
6 - 1.6.14 Fusible plug, fusible link
6 - 1.6.15 Internal quick-closing remotely controlled shut-off valve
6 - 1.6.16 Non-return valve
6 - 1.6.17 Pressure vessel
7 - 1.6.18 Rail tank wagon
7 - 1.6.19 Relief valve
7 - 1.6.20 Road tanker
7 - 1.6.21 Safety valve
7 - 1.6.22 Semitrailer
7 - 1.6.23 System
7 - 1.6.24 Tank
7 - 1.6.25 Temporary installation
7 - 1.6.26 Trailer
7 - 1.6.27 Transport controller
7 - 1.6.28 Maximum filling level
7 - 1.6.29 Standard filling level
7 - 1.6.30 Volume filling percentage
8 - SECTION 2. COMMON REQUIREMENTS FOR SYSTEMS AND EQUIPMENT
8 - 2.1 GENERAL
8 - 2.1.1 Application
8 - 2.1.2 Materials
8 - 2.2 CYLINDERS, TANKS, STORAGES
8 - 2.2.1 Cylinders
8 - 2.2.2 Tanks
8 - 2.2.3 Tank and Storage Markings
8 - 2.2.4 Tank Painting
8 - 2.3 ANCILLARY FITTINGS AND EQUIPMENT
8 - 2.3.1 Safety Equipment
8 - 2.3.2 Standards
8 - 2.3.3 Electrical Equipment and Wiring
8 - 2.3.4 Protection of Fittings
9 - 2.3.5 Filling and Discharge Connections.
9 - 2.4 PRESSURE-RELIEF VALVES
9 - 2.4.1 Provision of Safety Valves
9 - 2.4.2 Set Pressure
9 - 2.4.3. Locking or Sealing
9 - 2.4.4. Discharge Capacity
9 - 2.4.5 Reserve Safety Valves
9 - 2.4.6 Liquid Relief Valves
9 - 2.5 EXCESS-FLOW VALVES AND NON-RETURN VALVES
9 - 2.5.1 General
9 - 2.5.2 Capacity
9 - 2.5.3 Valve Construction
9 - 2.5.4 Installation
9 - 2.5.5 Multiple-tank Systems
9 - 2.6 MANUAL SHUT-OFF VALVES
9 - 2.6.1 General
10 - 2.6.2 Tank Filling Valve
10 - 2.6.3 Pipeline Shut-off Valve
10 - 2.6.4 Bleed Valves
10 - 2.7 LIQUID LEVEL GAUGES
10 - 2.7.1 General
10 - 2.7.2 Fixed liquid level gauges.
10 - 2.7.3 Standard filling level
10 - 2.7.4 Variable-level Gauges
10 - 2.7.5 Visual Gauges
10 - 2.8 PRESSURE GAUGES
10 - 2.8.1 General
10 - 2.8.2 Postition
10 - 2.9 TEMPERATURE GAUGES
10 - 2.9.1 General
10 - 2.9.2 Position
10 - 2.10 PIPING
10 - 2.10.1 Design, Fabrication and Installation
10 - 2.10.2 Joints
10 - 2.10.3 Pipe Runs
10 - 2.10.4 Concealed Piping
10 - 2.10.5 Installation Testing
10 - 2.10.6 Marking
10 - 2.11 FLEXIBLE PIPE CONNECTIONS
10 - 2.11.1 General
11 - 2.11.2 Extent of Swivel
11 - 2.11.3 Materials and Construction
11 - 2.11.4 Installation Testing
11 - 2.12 FLEXIBLE STEEL HOSE
11 - 2.12.1 Design Pressure
11 - 2.12.2 End Connectors
11 - 2.12.3 Installation Testing
11 - 2.12.4 Marking
11 - 2.13 RUBBER HOSE
11 - 2.13.1 Hose Subject to Container Pressure
11 - 2.13.2 Low Pressure Hose.
11 - 2.14 PUMPS
11 - 2.14.1 Design Pressure
11 - 2.14.2 Positive Displacement Pumps
11 - 2.14.3 Centrifugal Pumps
11 - 2.14.4 Pressure Gauge
11 - 2.14.5 Shut-off Valve
11 - 2.14.6 Marking.
11 - 2.15 COMPRESSORS
11 - 2.15.1 General
11 - 2.15.2 Valves
11 - 2.15.3 Pressure Gauge
12 - 2.16 VAPORIZERS
12 - 2.16.1 Type
12 - 2.16.2 Design
12 - 2.16.3 Installation
12 - 2.16.4 Safety Devices
12 - 2.16.5 Marking
13 - SECTION 3. FIXED TANK STORAGE
13 - 3.1 APPLICATION OF SECTION
13 - 3.2 TANK LOCATION
13 - 3.2.1 General
13 - 3.2.2 Separation of Tank from Surroundings
13 - 3.2.3 Adjacent Tanks
13 - 3.2.4 Tanks near Flammable and Combustible Liquid Storages
13 - 3.2.5 Chlorine Storage
13 - 3.2.6 Potable Water Supply
13 - 3.3 INSTALLATION
13 - 3.3.1. Foundations and Supports
13 - 3.3.2 Temporary Installations
13 - 3.3.3 Tank Protection
14 - 3.3.4 Security of Tanks
14 - 3.3.5 Restrictions for Lockable Valves
14 - 3.3.6 Security Fence Construction
14 - 3.4 SAFETY EQUIPMENT
14 - 3.4.1 Suitability
14 - 3.4.2 Isolated Tanks
14 - 3.4.3 Tanks Near Habitation
14 - 3.4.4 Location of Safety Equipment
15 - SECTION 4. TANKS FOR TRANSPORTATION
15 - 4.1 GENERAL
15 - 4.1.1 Application of Section
15 - 4.1.2 Protection of Hoses
15 - 4.1.3 Vapour Return Valve
15 - 4.1.4 Electrical Equipment and Lighting
15 - 4.2 ROAD AND RAIL TANK VEHICLES
15 - 4.2.1 Road Tankers
15 - 4.2.2. Rail Tank Wagons
15 - 4.3 SKID TANKS, NURSE TANKS AND APPLICATOR TANKS
15 - 4.3.1 Secure Mountings
15 - 4.3.2 Valves and Accessories
15 - 4.3.3 Fusible Plugs
15 - 4.3.4 Safety Equipment
16 - SECTION 5. CYLINDERS AND CYLINDER SYSTEMS
16 - 5.1 EQUIPMENT
16 - 5.1.1 Cylinders
16 - 5.1.2 Valves
16 - 5.1.3 Piping
16 - 5.2 LOCATION AND INSTALLATIONS
16 - 5.2.1 Ventilation
16 - 5.2.2 Adjacent Hazards
16 - 5.2.3 Cylinders in Use
16 - 5.2.4 Storage of Cylinders Not in Use
17 - SECTION 6. REFRIGERATED STORAGE
17 - 6.1 APPLICATION OF SECTION
17 - 6.2 TANK CONSTRUCTION
17 - 6.2.1. Design Pressure of 100 kPa and Below
17 - 6.2.2 Design Pressure Above 100 kPa
17 - 6.2.3 Materials
17 - 6.2.4 Marking
17 - 6.3 LOCATION AND INSTALLATION
17 - 6.3.1 General
17 - 6.3.2 Foundations
17 - 6.3.3 Tank Protection
17 - 6.3.4 Soil Freezing
17 - 6.3.5 Insulation
17 - 6.3.6 Compounds
17 - 6.3.7 Bunds
17 - 6.4 FILLING AND DISCHARGING VALVES
17 - 6.4.1 Use of Non-return Valves
17 - 6.4.2 Use of Excess-flow Valves
17 - 6.5 PRESSURE RELIEF
17 - 6.5.1 Total Relieving Capacity
17 - 6.5.2 Safety Hatch
17 - 6.5.3 Vent Lines
18 - 6.5.4 Weather Protection
18 - 6.5.5 Vacuum Breakers
18 - 6.6 REFRIGERATION SYSTEMS
18 - 6.6.1 Design Standard
18 - 6.6.2 Emergency Power
18 - 6.6.3 Refrigeration Load
18 - 6.6.4 Control System
18 - 6.6.5 Compressors
18 - 6.6.6 Condensers
18 - 6.6.7 Receiver and Liquid Drain
19 - SECTION 7. OPERATIONS
19 - 7.1 GENERAL PRECAUTIONS
19 - 7.1.1 Approval of Installation
19 - 7.1.2 Training of Personnel
19 - 7.1.3 Lock-up Areas or Controls
19 - 7.1.4 Use of Water in Emergencies
19 - 7.1.5 Stress Corrosion
19 - 7.1.6 Fire Precautions
19 - 7.1.7 Parking of Transpor Vehicles
19 - 7.1.8 Surrounding Areas
19 - 7.2 RESPONSIBILITY
19 - 7.2.1 Owner
19 - 7.2.2 Filler
20 - 7.2.3 Transport controller
20 - 7.3 INSPECTION AND TESTING
20 - 7.3.1 Cylinders
20 - 7.3.2 Storage Tanks
20 - 7.3.3 Other Tanks
20 - 7.3.4 Refrigerated Tanks
20 - 7.3.5 Rail Tank Wagons
20 - 7.3.6 Road Tankers
20 - 7.3.7 Safety Valves
20 - 7.3.8 Relief Valves
20 - 7.3.9 Excess-flow Valves and Non-reture Valves
20 - 7.3.10 Rigid Piping and Swivel Joint Assemblies
20 - 7.3.11 Flexible Steel Hose
20 - 7.3.12 Hose
20 - 7.3.13 Liquid Level Gauges
20 - 7.3.14 Pressure Gauges
20 - 7.3.15 Temperature Gauges
20 - 7.4 FILLING AND DISCHARGING
20 - 7.4.1 General
20 - 7.4.2 Attendant
20 - 7.4.3 Protective Equipment
21 - 7.4.4 Precautions Against Movement
21 - 7.4.5 Valves
21 - 7.4.6 Liquid Level
21 - 7.4.7 Mass filling ratio
21 - 7.4.8 Filling Cylinders
21 - 7.4.9 Filling Refrigerated Tanks
21 - 7.5 CYLINDER HANDLING AND TRANSPORT
21 - 7.5.1 Handling
21 - 7.5.2 Transport
21 - 7.6 LEAK DETECTION AND LOCATION
21 - 7.6.1 General
21 - 7.6.2 Location of Leaks
21 - 7.7 REPAIRS
21 - 7.7.1 Personnel
21 - 7.7.2 Protective Equipment
21 - 7.7.3 Purging
21 - 7.7.4 Welded Repairs
21 - 7.7.5 Repairs to Rail Tank Wagons
22 - APPENDIX A - PROPERTIES OF ANHYDROUS AMMONIA
24 - APPENDIX B - CAPACITY OF SAFETY VALVES
24 - B1 PRESSURE TANKS AND VAPORIZERS
24 - B2 REFRIGERATED TANKS.
25 - APPENDIX C - MATERIALS FOR AMMONIA TANKS
26 - APPENDIX D - TANK FILLING LEVEL
26 - D1 INTRODUCTION
26 - D2 DETERMINATION OF STANDARD FILLING LEVEL
26 - D2.1 Application
26 - D2.2 Principle
27 - D2.3 Procedure
27 - D3 PROCEDURE FILLING BY WEIGHT
27 - D3.1 Application
27 - D3.2 Filling procedure
27 - D4 PROCEDURE - FILLING BY VOLUME - STANDARD LIQUID LEVEL METHOD
27 - D4.1 Application
27 - D4.2 Filling procedure
27 - D5 FILLING BY VOLUME TEMPERATURECORRECTION METHOD
27 - D5.1 Application
27 - D5.2 Determination of maximum permitted level
27 - D6 FILLING PROCEDURE
28 - ANNEX - LIST OF REFERENCE DDOCUMENTS

Sets out requirements for the design, construction and location for installations ranging from bulk depots to points of usage or application. Also deals with safety procedures associated with the operation of an installation, transport and utilization.

This Standard sets out requirements for the design, construction and operation of equipment and installations for the storage and handling of anhydrous ammonia, and for its transport by road and rail. It does not deal with any plant or equipment in which ammonia is processed, or with any vessels that form an integral part of that processing equipment.

Under Revision see DR 00100