FOREWORD
INTRODUCTION
Clause
1 General
1.1 Scope
1.2 Normative references
2 Definitions and terms
3 Safety and area classification
3.1 Safety principles
3.2 Area classification objectives
4 Area classification procedure
4.1 General
4.2 Sources of release
4.3 Type of zone
4.4 Extent of zone
5 Ventilation
5.1 General
5.2 Main types of ventilation
5.3 Degree of ventilation
5.4 Availability of ventilation
6 Documentation
6.1 General
6.2 Drawings, data sheets and tables
Annexes
A Examples of sources of release
B Ventilation
C Examples of area classification