AS 4326-2008

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The storage and handling of oxidizing agents

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Provides requirements and recommendations for the storage and handling of oxidizing agents of dangerous goods of Division 5.1. Sets out requirements for storage, handling, operational safety, emergency planning and fire protection for all Division 5.1 dangerous goods and provides specific storage requirements for hydrogen peroxide and ammonium nitrate.

Header

About this publication

Preface

1 Scope and general

1.1 Scope

1.2 Application

1.2.1 Where this Standard applies

1.2.2 Where this Standard does not apply

1.3 Referenced documents

1.4 Definitions

1.5 Security of storage areas

2 Minor storage

2.1 Scope of Section

2.2 Minor storage quantities

2.3 Minor storage requirements

3 Transit storage

3.1 Scope of Section

3.2 Delineation of transit storage areas

3.3 Requirements for transit storage

3.4 Ammonium nitrate in transit storage areas

4 Storage and handling of packages

4.1 Scope of Section

4.2 Application of section

4.3 Types of package stores

4.4 Design and construction of package stores

4.5 Storage in stacks

4.6 Storage of IBCs

4.7 Separation and segregation

4.7.1 Oxidizing agents having Subsidiary Risks

4.7.2 Separation of package stores from protected places and boundaries

4.7.2.1 Separation distances

4.7.2.2 Measurement of separation distances

4.7.3 Segregation of oxidizing agents

4.7.3.1 Segregation

4.7.3.2 Measurement of segregation distances

4.8 Storage in cabinets

4.8.1 Types of substances kept

4.8.2 Maximum quantities to be kept

4.8.3 Cabinet design and construction

4.8.4 Cabinet location

4.8.5 Cabinet marking

4.9 Outdoor storage

4.10 Requirements for package filling operations

5 Storage in intermediate bulk containers

5.1 Scope of Section

5.2 Considerations specific to IBC storage

6 Bulk storage of solids

6.1 Scope of Section

6.2 Design and construction of buildings for bulk storage

6.3 Storage in silos

6.3.1 General

6.3.2 Design and materials of construction of silos

6.3.3 Filling and emptying silos

6.3.4 Clearing blockages

6.4 Separation and segregation

6.4.1 Separation of bulk stores from protected places

6.4.2 Segregation of oxidizing agents from other dangerous goods

6.5 Atmospheric control in stores

6.5.1 Ventilation

6.5.2 Humidity control

7 Storage and handling of liquids in tanks

7.1 Scope of Section

7.2 Application of section

7.3 Tank types

7.4 Location of tanks

7.4.1 General

7.4.2 Separation and segregation

7.4.2.1 Oxidizing agents having Subsidiary Risks

7.4.2.2 Separation distances

7.4.2.3 Measurement of separation distances

7.4.2.4 Segregation

7.4.2.5 Measurement of segregation distances

7.5 Bunds and compounds

7.5.1 General

7.5.2 Capacity of compounds

7.5.3 Design and construction

7.5.4 Compound drainage

7.5.5 Maintenance

7.6 Design and construction requirements for all tanks

7.6.1 Materials of construction

7.6.2 Foundations

7.6.3 Supports

7.6.4 Bearing area

7.6.5 Vents

7.6.6 Pressure relief for storage systems

7.6.7 Transfer points

7.6.8 Overfill protection

7.7 Additional requirements for portable tanks

7.8 Additional requirements for fixed tanks

7.8.1 Tank design and construction

7.8.1.1 General

7.8.1.2 Pressure vessels

7.8.1.3 Other vessels

7.8.1.4 Tank shell thickness

7.8.2 Outlet valve

7.8.3 Level indication

7.8.4 Nozzles

7.8.5 Overflow lines

7.8.6 In-breathing vent

7.8.7 Emergency venting

7.9 Ancillary equipment for all tanks

7.9.1 Pipes and flexible hoses

7.9.2 Liquid lines

7.9.3 Accessories

7.9.4 Transfer systems

7.9.5 Filling connections

7.9.6 Transfer hoses

7.9.7 Filling

7.9.8 Electrical equipment

8 Additional requirements for the storage of hydrogen peroxide, and mixtures containing hydrogen peroxide in fixed tanks

8.1 Scope of Section

8.2 Tank classification

8.3 Materials of construction

8.3.1 Tanks having a working capacity of greater than 10 m3

8.3.2 Tanks having a working capacity of less than 10 m3

8.3.3 Tank design criteria

8.3.4 Venting requirements

8.3.5 Pipework and connections

8.3.6 Temperature indication

8.3.7 Chemical treatment (passivation)

9 Specific requirements for ammonium nitrate

9.1 Scope of Section

9.2 Types of store

9.3 General requirements for stores for ammonium nitrate

9.3.1 Location, design and construction of stores for ammonium nitrate

9.3.2 Separation distances to vulnerable facilities and critical infrastructure

9.3.3 Internal combustion engines

9.3.4 Co-storage of other materials and dangerous goods within the ammonium nitrate store

9.3.4.1 Conditions of co-storage

9.3.4.2 Materials and dangerous goods that cannot be kept in the ammonium nitrate store

9.3.4.3 Materials and dangerous goods that may be kept in the ammonium nitrate store

9.3.4.4 Co-storage of ammonium nitrate and explosives

9.3.5 Operational requirements specific to ammonium nitrate

9.3.6 Signs and notices

9.3.7 Conveyor belts

9.4 Specific requirements for the storage of ammonium nitrate in packages and IBCs

9.5 Specific requirements for the bulk storage of solid ammonium nitrate

9.5.1 General

9.5.2 Storage of ammonium nitrate in bunkers

9.5.3 Storage in silos

9.6 Specific requirements for the bulk storage of ammonium nitrate liquid, UN 2426

9.6.1 Introduction

9.6.2 General equipment and operational requirements and recommendations

9.6.3 Materials of tank construction

9.6.4 Protection of tanks

9.6.5 Segregation of tanks from other products

9.6.6 Ancillary equipment

9.6.7 Pipework for ammonium nitrate solutions

9.6.8 Pumps

9.6.9 Operations

9.6.9.1 General

9.6.9.2 Normal operating conditions

9.6.9.3 Management of abnormal conditions

9.6.9.4 Addition of cooling (dilution) water under abnormal conditions

9.7 Recovery and disposal of ammonium nitrate

9.7.1 General

9.7.2 Ammonium nitrate of types other than UN 2426

9.7.3 Ammonium nitrate liquid, UN 2426

10 Operational and personnel safety

10.1 Scope of Section

10.2 General precautions

10.2.1 Control of entry

10.2.2 Clear access

10.2.3 Lighting

10.2.4 Handling precautions

10.2.5 Sources of heat and fire

10.2.6 Checking of safety equipment

10.2.7 Packagings for oxidizing agents

10.2.8 Safety information

10.3 Signs and placards

10.3.1 Placarding of stores

10.3.2 Signs and notices

10.3.3 Safety information for emergency services

10.3.4 Marking of packages

10.4 Materials handling equipment

10.4.1 Powered vehicles

10.4.1.1 General

10.4.1.2 Additional requirements for powered vehicles that are to be used in a store for bulk ammonium nitrate or bulk calcium nitrate

10.4.1.3 Additional requirements for powered vehicles for use in all ammonium nitrate stores

10.4.2 Lifting appliances

10.4.3 Forklift attachments

10.5 Housekeeping

10.5.1 Site upkeep

10.5.2 Bulk storage installations

10.5.3 Package stores

10.6 Inspection of plant and equipment

10.7 Filling of tanks

10.8 Effluent control

10.9 Inspection and maintenance of tanks

10.10 Construction and maintenance work

10.10.1 General

10.10.2 Routine work

10.10.3 Work permit

10.10.4 Preparation of work site and plant

10.10.5 Completion of work and commissioning

10.10.6 Hot work

10.10.7 Work inside a confined space

10.11 Personnel training

10.11.1 Job knowledge

10.11.2 Training

10.11.3 Contractors

10.11.4 Refresher training

10.11.5 Hygiene

10.12 Records

10.13 Personal protective equipment

10.13.1 General

10.13.2 Types of personal protective equipment

10.13.3 Occasions for use of personal protective equipment

10.13.4 Care and maintenance of personal protective equipment

10.14 First aid

10.14.1 General

10.14.2 First aid procedures

11 Emergency management

11.1 Scope of Section

11.2 Planning for emergencies

11.2.1 Considerations in designing premises

11.2.2 Emergency plan

11.2.2.1 General

11.2.3 Review of emergency plan

11.3 Manifest

11.4 Placarding

11.5 Management of leaks and spills

11.5.1 General

11.5.2 Clean-up materials and equipment

11.5.3 Actions for dealing with leaks and spills

12 Fire protection

12.1 Scope of Section

12.2 Application

12.3 General considerations

12.3.1 Hazards

12.3.2 Firefighting

12.3.3 Design

12.3.4 Compatibility

12.3.5 Location

12.3.6 Weather protection

12.3.7 Fixed fire protection and detection systems

12.3.8 Fire alarm systems

12.3.9 Maintenance of fire protection equipment

12.4 Fire extinguishers

12.4.1 General

12.4.2 Location

12.4.3 Limitations

12.5 Hose reels

12.5.1 General

12.5.2 Location

12.6 Fire hydrants

12.6.1 General

12.6.2 Location

12.7 Fire protection measures

12.7.1 Storage cabinets

12.7.2 Stores other than storage cabinets

12.7.3 Use of fire protection equipment

12.8 Special requirements for UN Nos 1745, 1746 and 2495

12.8.1 General

12.8.2 Minor quantities

12.8.3 Quantities not exceeding 1000 kg

12.8.4 Quantities exceeding 1000 kg

12.9 Action in the event of a fire

13 Waste storage and disposal

13.1 Scope of Section

13.2 Storage of wastes

13.3 Items for disposal

13.3.1 Oxidizing agents

13.3.2 Other items

13.4 Pre-disposal treatment of empty containers

13.5 Methods of disposal

Appendix A

A1 Fire hazards

A2 Health hazards

A3 Environmental hazards

Appendix B

B1 Physical and chemical properties of ammonium nitrate

B2 Hazards of ammonium nitrate

B2.1 Introduction

B2.2 Fire

B2.3 Decomposition

B2.4 Explosion

B2.5 Ammonium nitrate dusts

B3 Compatible and incompatible substances

B3.1 General

B3.2 Compatible fertilizers

B3.3 Incompatible substances

Appendix C

Appendix D

D1 Introduction

D2 Overview of the security plan

D3 Elements of the security plan

D3.1 General

D3.2 Security risk management

D3.3 Personnel management

D3.4 Control of access

D3.5 Record keeping and inventory procedures

Appendix E

E1 Premises emergency plan

E2 Plan for use by emergency services

E3 Information to be provided to the emergency services

E4 Bibliography of documents providing guidelines on the preparation of emergency plans