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AS/NZS 4745-2004 code of practice for handling combustible dusts

Standard Number:  AS/NZS 4745-2004
Title:  code of practice for handling combustible dusts
Language:  English
Replacing Standard:  DR 02553

Publication Date:  2004/1/27
Status:  Withdrawn
International Classification for Standards (ICS)ENVIRONMENT. HEALTH PROTECTION. SAFETY>>Protection against dangerous goods
Publisher:  Australia Standards(AS)
Price:  
Number of Pages:88P.;A4  

Description:Outlines measures and practices to assist those industries which may have risks associated with the presence of combustible dusts as part of their processes; it also assists such industries in minimizing the risk of injury, death or loss of property to f  
Catalog:Document Contents
AS/NZS 4745:2004 CODE OF PRACTICE FOR HANDLING COMBUSTIBLE DUSTS
PREFACE
CONTENTS
FOREWORD
SECTION 1 SCOPE AND GENERAL
1.1 SCOPE
1.2 APPLICATION
1.3 REFERENCED DOCUMENTS
SECTION 2 PHILOSOPHY
2.1 OCCUPATIONAL HEALTH AND SAFETY MANAGEMENT SYSTEM
2.1.1 Awareness of regulations and responsibility
2.1.2 Occupational health and safety legislation
2.1.3 Duty of care
2.1.4 Occupational health and safety management system model
2.2 RISK MANAGEMENT STANDARDS
2.2.1 Risk management philosophy
2.2.2 Hazard identification
2.2.3 Risk analysis
2.2.4 Risk evaluation
2.2.5 Risk control
2.2.6 Monitoring of risk
2.2.7 Independent audits of the risk management system
2.3 TRAINING
2.4 DOCUMENTATION
SECTION 3 HAZARD ASSESSMENT
3.1 DUST CHARACTERIZATION
3.1.1 Introduction
3.1.2 Chemical composition
3.1.3 Moisture
3.1.4 Particle size distribution and shape (specific surface area)
3.2 SAFETY CHARACTERISTICS OF DUSTS
3.3 COMBUSTION BEHAVIOUR
3.3.1 Smouldering
3.3.2 Flaming combustion
3.3.3 Exothermic decomposition
3.3.4 Dust explosions
3.3.5 Atmospheric influences
3.3.6 Gas release
3.4 DETERMINATION OF DUST CHARACTERISTICS
3.4.1 Dust layers
3.4.2 Airborne dust/air mixtures
3.4.3 Minimum ignition energy (MIE)
3.4.4 Minimum ignition temperature (MIT)
3.4.5 Test requirements
3.5 SAMPLING OF DUSTS FOR TESTING
3.6 HAZARDOUS PROCESSES
3.6.1 Introduction
3.6.2 Filling and emptying operations
3.6.3 Loading bulk materials into flammable solvents
3.6.4 Flexible intermediate bulk containers (FIBC)
3.6.5 Mixing
3.6.6 Dust separation
3.6.7 Spray and fluidized bed dryers
3.6.8 Milling
3.6.9 Sifters and sieves
3.6.10 Pneumatic conveyors
3.6.11 Belt conveyors
3.6.12 Vibratory conveyors
3.6.13 Bucket elevators
3.6.14 Screw feeders
3.6.15 Transport of containers
3.6.16 Vehicles
3.6.17 Storage in vessels, silos and bunkers
3.6.18 Exhaust equipment
3.6.19 Vacuum cleaners
3.7 RISK ASSESSMENT
3.7.1 Consequence assessment
3.7.2 Chemical composition
SECTION 4 SAFETY REQUIREMENTS
4.1 GENERAL
4.2 TRAINING/AWARENESS
4.3 PERSONNEL PROTECTIVE EQUIPMENT (PPE)
4.4 SITE ENTRY CONDITIONS
4.5 WORK PERMITS
4.6 SAFETY OPERATING PROCEDURES
4.7 MAINTENANCE AND HOUSEKEEPING
4.7.1 Maintenance
4.7.2 Housekeeping
SECTION 5 DETERMINING THE PRESENCE OF EFFECTIVE IGNITION SOURCES
5.1 GENERAL
5.2 HOT SURFACES
5.3 FLAMES, HOT GASES AND HOT PARTICLES
5.4 MECHANICALLY GENERATED SPARKS
5.5 ELECTRICAL APPARATUS
5.6 STRAY ELECTRIC CURRENTS, INDUCED VOLTAGES AND CATHODIC CORROSION PROTECTION
5.7 STATIC ELECTRICITY
5.8 LIGHTNING
5.9 RADIOFREQUENCY (RF) ELECTROMAGNETIC WAVES FROM 10 4 Hz TO 3x10 12 Hz
5.10 ELECTROMAGNETIC WAVES FROM 3 (10 11 Hz TO 3 x 10 15 Hz (Infra-red, visible and ultra...
5.11 IONIZING RADIATION
5.12 ULTRASONIC RADIATION
5.13 ADIABATIC COMPRESSION AND SHOCK WAVES
5.14 EXOTHERMIC REACTIONS, INCLUDING SELF-IGNITION OF DUSTS
SECTION 6 PLANT DESIGN
6.1 SITE AND PLANT LAYOUT
6.2 BUILDING DESIGN
6.3 EQUIPMENT
6.3.1 Dust containment
6.4 REDUCE DUST CLOUD FORMATION
6.4.1 Equipment selection
6.4.2 Equipment design considerations
6.4.3 Industry specific issues
6.5 EXPLOSION-PREVENTION AND PROTECTION
6.5.1 Fundamental principles
6.5.2 Avoidance or reduction of the amount of substances that can form combustible dust a...
SECTION 7 DETAILED DESIGN AND OPERATIONAL ISSUES
7.1 CLASSIFICATION OF HAZARDOUS PLACES
7.1.1 General
7.1.2 Zones for dusts
7.2 DESIGN AND CONSTRUCTION OF EQUIPMENT, PROTECTIVE SYSTEMS AND COMPONENTS BASED ON THE ...
7.2.1 General
7.2.2 Classification for levels of protection
7.2.3 General requirements for avoidance of ignition sources
7.2.4 Hot surfaces
7.2.5 Flames and hot gases
7.2.6 Mechanically generated sparks, embers and hot particles
7.2.7 Electrical apparatus
7.2.8 Stray electric currents and cathodic corrosion protection
7.2.9 Static electricity
7.2.10 Lightning
7.2.11 Radiofrequency (RF) electromagnetic waves from 10 4 Hz to 3 x 10 12 Hz
7.2.12 Electromagnetic waves from 3 x 10 11 Hz to 3 x 10 15 Hz (Infra-red, visible and ul...
7.2.13 Ionizing radiation
7.2.14 Ultrasonic radiation
7.2.15 Adiabatic compression and shock waves
7.2.16 Exothermic reactions, including self-ignition of dusts
7.3 DESIGN AND CONSTRUCTION OF EQUIPMENT, PROTECTIVE SYSTEMS AND COMPONENTS TO REDUCE THE...
7.3.1 General
7.3.2 Explosion-resistant design
7.3.3 Explosion relief venting
7.3.4 Combined pressure resistant and vented designs
7.3.5 Explosion suppression
7.3.6 Prevention of explosion propagation (explosion decoupling)
7.3.7 Ember and spark extinguishing systems
7.4 PROVISIONS FOR EMERGENCY MEASURES
7.5 PROVISIONS FOR PLANT START-UP
7.6 PRINCIPLES OF MEASURING AND CONTROL SYSTEMS FOR EXPLOSION-PREVENTION AND PROTECTION
7.7 FIRE FIGHTING
SECTION 8 EMERGENCY MANAGEMENT
8.1 PURPOSE
8.2 EMERGENCY PLANNING
8.2.1 Emergency procedures
8.2.2 Roles, responsibilities and actions
APPENDIX A - TOOLS FOR USE IN POTENTIALLY EXPLOSIVE ATMOSPHERES
APPENDIX B - MEASURING AND CONTROL SYSTEMS TO AVOID IGNITION SOURCES
APPENDIX C - BIBLIOGRAPHY
GLOSSARY
  
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File Size:  594KB
Tile in English:  code of practice for handling combustible dusts

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