AS/NZS 2927:2001

1 - AS/NZS 2927:2001 THE STORAGE AND HANDLING OF LIQUEFIED CHLORINE GAS
4 - PREFACE
6 - CONTENTS
8 - SECTION 1 SCOPE AND GENERAL
8 - 1.1 SCOPE
8 - 1.2 APPLICATION
8 - 1.3 REFERENCED DOCUMENTS
9 - 1.4 NEW DESIGNS AND INNOVATIONS
9 - 1.5 DEFINITIONS
9 - 1.5.1 Authorized
9 - 1.5.2 Canister respirator (filtration type escape respirator)
9 - 1.5.3 Chlorinator
9 - 1.5.4 Chlorine
9 - 1.5.5 Container
9 - 1.5.6 Cylinder
9 - 1.5.7 Dedicated store
9 - 1.5.8 Drum
9 - 1.5.9 Exposure standard
10 - 1.5.10 Fire-resistance level (FRL)/ fire resistance rating (FRR)
10 - 1.5.11 Informative appendix
10 - 1.5.12 Installation
10 - 1.5.13 Material safety data sheet (MSDS)
10 - 1.5.14 May
10 - 1.5.15 Nominal effective life (of SCBA)
10 - 1.5.16 Non-combustible
10 - 1.5.17 Normative appendix
11 - 1.5.18 Opening (in a wall)
11 - 1.5.19 Piping
11 - 1.5.20 Placard
11 - 1.5.21 Protected places
11 - 1.5.22 Public place
11 - 1.5.23 Regulatory authority
11 - 1.5.24 Restricted area
11 - 1.5.25 Road tank vehicle
12 - 1.5.26 Secured area
12 - 1.5.27 Self-contained breathing apparatus (SCBA)
12 - 1.5.28 Separation
12 - 1.5.29 Shall
12 - 1.5.30 Should
12 - 1.5.31 Tank
12 - 1.5.32 Vaporiser
12 - 1.5.33 Vapour barrier
12 - 1.6 CLASSIFICATION OF CHLORINE
12 - 1.7 MARKING AND LABELLING OF CONTAINERS
12 - 1.8 SECURITY OF INSTALLATIONS
13 - SECTION 2 MINOR STORAGE
13 - 2.1 SCOPE OF SECTION
13 - 2.2 CRITERIA FOR CLASSIFICATION AS MINOR STORAGE
13 - 2.3 REQUIREMENTS APPLICABLE TO MINOR STORAGE
13 - 2.3.1 General
14 - 2.4 OUTDOOR MINOR STORAGE
14 - 2.5 INDOOR MINOR STORAGE
14 - 2.6 FIRST AID
15 - SECTION 3 LOCATION, DESIGN AND CONSTRUCTION OF CHLORINE INSTALLATIONS
15 - 3.1 SCOPE OF SECTION
15 - 3.2 APPLICATION
15 - 3.3 LOCATION, DESIGN AND CONSTRUCTION OF CHLORINE INSTALLATIONS
15 - 3.3.1 Location of chlorine installations
16 - 3.3.2 Design and construction of chlorine installations
17 - 3.4 ADDITIONAL REQUIREMENTS FOR OUTDOOR INSTALLATIONS
17 - 3.4.1 General
17 - 3.4.2 Security of outdoor installations
18 - 3.5 ADDITIONAL REQUIREMENTS FOR INDOOR INSTALLATIONS
18 - 3.5.1 General
18 - 3.5.2 Doors for personnel
18 - 3.5.3 Ventilation for indoor installations
19 - 3.5.4 Ventilation of chlorination rooms
20 - SECTION 4 STORAGE AND HANDLING EQUIPMENT FOR CHLORINE
20 - 4.1 SCOPE OF SECTION
20 - 4.2 CONTAINERS
20 - 4.2.1 Cylinders
20 - 4.2.2 Drums and tanks
20 - 4.3 CHLORINATORS
20 - 4.3.1 Materials of construction
20 - 4.3.2 Location
20 - 4.3.3 Pressure relief
21 - 4.4 VAPORISERS (EVAPORATORS)
21 - 4.4.1 Operating principle
21 - 4.4.2 Design of vaporisers
22 - 4.4.3 Vaporiser controls and indicators
23 - 4.4.4 Installing the vaporiser
23 - 4.5 PIPING SYSTEMS
23 - 4.5.1 General
23 - 4.5.2 Testing
24 - 4.5.3 Reduction of liquefaction hazard
24 - 4.5.4 Materials of construction
24 - 4.5.5 Piping gradients
24 - 4.5.6 Fixed and underground piping systems
25 - 4.5.7 Flexible pipelines and hoses
26 - 4.6 VALVES
26 - 4.6.1 General
26 - 4.6.2 Globe valves
26 - 4.6.3 Ball valves
26 - 4.6.4 Vacuum-operated valves
26 - 4.6.5 Gas valves under vacuum
26 - 4.7 JOINTS AND FITTINGS
26 - 4.7.1 Joints
27 - 4.7.2 Fittings
27 - 4.7.3 Pressure gauges and switches
27 - 4.8 PLANT SAFETY EQUIPMENT
27 - 4.8.1 Leak detectors
27 - 4.8.2 Vapour dispersal equipment
28 - 4.8.3 Sprinkler systems
28 - 4.8.4 Caustic soda venting systems
28 - 4.8.5 Wind direction indicators
28 - 4.8.6 Air scrubbers
29 - 4.8.7 Automatic devices for shutting off container valves
30 - SECTION 5 OPERATIONAL AND PERSONNEL SAFETY
30 - 5.1 SCOPE OF SECTION
30 - 5.2 OPERATION OF THE INSTALLATION
30 - 5.2.1 Authorized personnel
30 - 5.2.2 Operating instructions
30 - 5.3 MEDICAL EXAMINATION
30 - 5.4 PERSONNEL TRAINING
30 - 5.4.1 Job knowledge
30 - 5.4.2 Training
31 - 5.5 GENERAL PRECAUTIONS
31 - 5.5.1 Control of entry
31 - 5.5.2 Clear access
31 - 5.5.3 Lighting
31 - 5.5.4 Checking of safety equipment
32 - 5.5.5 Safety information
32 - 5.6 TRANSFER OPERATIONS
32 - 5.7 MOVEMENT OF CONTAINERS
32 - 5.7.1 Cylinders
32 - 5.7.2 Drums
32 - 5.8 CONNECTING AND MANIFOLDING CONTAINERS
32 - 5.8.1 Connecting of containers
32 - 5.8.2 Making and breaking connections
33 - 5.8.3 Manifolding of containers
33 - 5.8.4 Withdrawal of chlorine from a container
33 - 5.9 INSPECTION OF PLANT AND EQUIPMENT
34 - 5.10 SAFETY PROCEDURES FOR CONSTRUCTION AND MAINTENANCE WORK
34 - 5.10.1 General
34 - 5.10.2 Routine work
34 - 5.10.3 Work permits
34 - 5.10.4 Hot work
34 - 5.10.5 Work inside a confined space
34 - 5.10.6 Preparation of work site and plant
35 - 5.10.7 Completion of work and commissioning
35 - 5.11 PERSONAL PROTECTIVE EQUIPMENT
35 - 5.11.1 General
35 - 5.11.2 Self-contained breathing apparatus (SCBA)
36 - 5.11.3 Protective clothing
36 - 5.11.4 Care, inspection and maintenance of personal protective equipment
36 - 5.12 FIRST AID
36 - 5.12.1 First aid station
36 - 5.12.2 Safety shower and eyewash facilities
37 - SECTION 6 EMERGENCY MANAGEMENT
37 - 6.1 SCOPE OF SECTION
37 - 6.2 PLANNING FOR EMERGENCIES
37 - 6.2.1 Considerations in designing premises
37 - 6.2.2 Emergency plan
38 - 6.3 MANIFEST
39 - 6.4 PLACARDING
39 - 6.4.1 Placarding of stores
39 - 6.4.2 Safety information board
39 - 6.5 MANAGEMENT OF LEAKS
40 - SECTION 7 FIRE PROTECTION
40 - 7.1 SCOPE OF SECTION
40 - 7.2 GENERAL CONSIDERATIONS
40 - 7.3 FIRE PROTECTION MEASURES
40 - 7.3.1 General
40 - 7.3.2 Fire protection systems
41 - 7.3.3 Design
41 - 7.3.4 Heat protection
41 - 7.3.5 Compatibility
41 - 7.3.6 Location
41 - 7.3.7 Weather protection
42 - 7.4 WATER SUPPLY AND FIRE WATER RETENTION
42 - 7.5 FIRE PROTECTION REQUIREMENTS
42 - 7.6 ACTION IN THE EVENT OF FIRE
43 - SECTION 8 DISPOSA L OF CHLORINE CONTAINERS AND CONTAMINATED EQUIPMENT
44 - APPENDIX A - PHYSICAL AND CHEMICAL DATA FOR CHLORINE
50 - APPENDIX B - HAZARDS ASSOCIATED WITH THE STORAGE AND HANDLING OF CHLORINE
50 - B1 GENERAL
50 - B2 TOXICITY
50 - B3 FLAMMABILITY
50 - B4 DENSITY
50 - B5 CORROSIVE ACTION ON METALS
50 - B6 REACTIVITY TO COMBUSTIBLES AND LUBRICANTS
50 - B7 THERMAL EXPANSION
51 - APPENDIX C - REFERENCED DOCUMENTS
55 - APPENDIX D - SAFETY SIGNS AND EMERGENCY INFORMATION PLACARD FOR CHLORINE INSTALLATIONS
57 - APPENDIX E - MATERIALS SUITABLE FOR USE WITH CHLORINE
57 - E1 GENERAL
58 - E2 BIBLIOGRAPHY
59 - APPENDIX F - EXPANSION CHAMBER
61 - APPENDIX G - RECOMMENDATIONS ON THE USE OF FOG NOZZLES AND SPRINKLERS
61 - G1 FOG NOZZLES
61 - G2 SPRINKLERS
62 - APPENDIX H - CAUSTIC SODA VENTING SYSTEM
63 - APPENDIX I - PHYSIOLOGICAL EFFECTS AND FIRST AID PROCEDURES
63 - I1 SCOPE
63 - I2 PHYSIOLOGICAL EFFECTS
63 - I3 CONCENTRATION EFFECTS OF CHLORINE GAS
64 - I4 PLAN OF ACTION FOR FIRST AID
64 - I5 MEDICAL TREATMENT
64 - I5.1 General
64 - I5.2 Inhalation
64 - I5.3 Eye irritation
64 - I5.4 Skin contact
65 - APPENDIX J - EMERGENCY PROCEDURES FOR LEAKS, SPILLS AND FIRE
65 - J1 GAS LEAKS
65 - J1.1 Evacuation
65 - J1.2 Action by trained, equipped personnel
66 - J2 LIQUID LEAKS AND SPILLS
66 - J2.1 Essential requirements
66 - J2.2 Action to be taken
66 - J3 FIRE
66 - J3.1 Dangers from fire
66 - J3.2 Steps to be taken
67 - APPENDIX K - BIBLIOGRAPHY OF DOCUMENTS PROVIDING GUIDELINES ON THE PREPARATION OF EMERGENCY PLANS
68 - APPENDIX L - INFORMATION TO BE PROVIDED TO EMERGENCY SERVICES
69 - APPENDIX M - FIRE PROTECTION
69 - M1 GENERAL
69 - M2 FIXED SYSTEMS
69 - M2.1 Fixed fire protection and detection systems
69 - M2.2 Fire alarm systems
69 - M3 FIRE EXTINGUISHERS
69 - M3.1 General
70 - M3.2 Special risks
70 - M3.3 Maintenance
70 - M3.4 Limitations
70 - M4 HOSE REELS
70 - M4.1 General
71 - M4.2 Maintenance
71 - M5 FIRE HYDRANTS
71 - M5.1 General
71 - M5.2 Maintenance
71 - M6 MONITORS
72 - M7 SPRINKLER SYSTEMS

Provides requirements and recommendations for the safe storage and handling of liquefied chlorine gas, in cylinders, drums and bulk, as well as requirements for ancillary equipment.

This Standard sets out requirements and recommendations for the safe storage and handling of liquefied chlorine gas. It also provides requirements and recommendations for vaporisers, chlorinators and other parts of systems in which chlorine is reticulated and distributed.NOTES: 1 Physical and chemical data for chlorine is provided in Appendix A.2 The hazardous properties of chlorine are discussed in Appendix B.For the purposes of this Standard, quantities are expressed in kilograms (kg).

First published as AS 2927-1987.
Jointly revised and designated as AS/NZS 2927:2001.