NBN EN 60079-10 : 2003

Introduction
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
      4.4.1 Release rate of gas or vapour
      4.4.2 Lower explosive limit (LEL)
      4.4.3 Ventilation
      4.4.4 Relative density of the gas or vapour
            when it is released
      4.4.5 Other parameters to be considered
      4.4.6 Illustrative examples
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 (informative) Examples of sources of release
B (informative) Ventilation
C (informative) Examples of hazardous classification
ZA (normative) Normative references to international
   publications with their corresponding European
   publications

Deals with the classification of hazardous areas where flammable gas or vapour risks may arise, in order to help with the proper selection and installation of apparatus for use in hazardous areas. Gives definitions and explanations of terms together with the main principles and procedures relating to hazardous area classification. Does not consider the effects of consequential damage.