Foreword
Introduction
1 Scope
2 Normative references
3 Terms, definitions and abbreviated terms
4 Hazard identification
5 Elements of risk assessment
5.1 General
5.2 Determining the amount and likelihood of an occurrence
of an explosive atmosphere
5.2.1 General
5.2.2 Degree of dispersion of flammable substances
5.2.3 Concentration of flammable substances
5.2.4 Amount of explosive atmosphere
5.3 Determining the presence of effective ignition sources
5.3.1 General
5.3.2 Hot surfaces
5.3.3 Flames and hot gases (including hot particles)
5.3.4 Mechanically generated sparks
5.3.5 Electrical apparatus
5.3.6 Stray electric currents
5.3.7 Static electricity
5.3.8 Lightning
5.3.9 Radio frequency (RF) electromagnetic waves from
104 Hz to 3 x 1012 Hz (high frequency)
5.3.10 Electromagnetic waves from 3 x 1011 Hz to 3 x
1015 Hz
5.3.11 Ionizing radiation
5.3.12 Ultrasonics
5.3.13 Adiabatic compression and shock waves
5.3.14 Exothermic reactions, including self-ignition of
dusts
5.4 Estimating the possible effects-of an explosion
6 Elimination or minimization of risk
6.1 Fundamental principles
6.2 Avoidance or reduction of explosive atmosphere
6.2.1 General
6.2.2 Process parameters
6.2.3 Design and construction of equipment, protective
systems and components containing flammable
substances
6.3 Classification of hazardous atmospheric conditions
6.3.1 General
6.3.2 Hazardous atmospheric conditions
6.4 Requirements for design and construction of equipment,
protective systems and components to avoid effective
ignition sources
6.4.1 General
6.4.2 Hot surfaces
6.4.3 Flames and hot gases
6.4.4 Mechanically generated sparks
6.4.5 Electrical apparatus
6.4.6 Stray electric currents and cathodic corrosion
protection
6.4.7 Static electricity
6.4.8 Lightning
6.4.9 Radio frequency (RF) electromagnetic waves from
104 Hz to 3 x 1012 Hz
6.4.10 Electromagnetic waves from 3 x 10[11] Hz to 3 x
10[15] Hz
6.4.11 Ionizing radiation
6.4.12 Ultrasonics
6.4.13 Adiabatic compression and shock waves
6.4.14 Exothermic reactions, including self-ignition of
dusts
6.5 Requirements for design and construction of equipment,
protective systems and components to reduce the explosion
effects
6.5.1 General
6.5.2 Explosion-resistant design
6.5.3 Explosion relief
6.5.4 Explosion suppression
6.5.5 Avoidance of explosion propagation (explosion
decoupling)
6.5.6 Special equipment for underground mining
6.6 Provisions for emergency measures
6.7 Principles for measuring and control systems for
explosion prevention and protection
7 Information for use
7.1 General
7.2 Information on equipment, protective systems and
components
7.3 Information for commissioning, maintenance and repair
to prevent explosion
7.4 Qualifications and training
Annex A (informative) Relation between categories and
hazardous atmospheric conditions
Annex ZA (informative) Clauses of this European Standard
addressing essential requirements or other
provisions of EU Directives
Bibliography