ISA 12.10 : 1988

1 Purpose
2 Scope
3 Definitions
4 Dust explosion parameters and variables
  4.1 The nature of a dust explosion
  4.2 Dust dispersion mechanics and control
  4.3 Dust cloud ignition
  4.4 Dust layer ignition
5 Procedures for the classification of various areas
  of existing plants
  5.1 Division 1 locations
  5.2 Division 2 locations
  5.3 Unclassified locations
6 Procedures for the classification of various portions
  of new process areas during the design stage
7 References
Appendix A

ISA-12.10-1988, Area Classification in Hazardous (Classified) Dust Locations, provides a comprehensive approach to identifying and classifying areas where combustible dust may pose explosion hazards in industrial environments. This standard explains the behavior of dust explosions, including factors such as dust concentration, layer thickness and electrical resistivity, that influence ignition risks. It outlines methods for measuring dust levels in the air and on surfaces, enabling classification of locations into Division 1, Division 2 or unclassified zones based on the likelihood and severity of dust hazards. Additionally, procedures for testing dust properties like explosivity and conductivity are included to support accurate hazard assessment. This information supports informed decisions about equipment selection and safety practices necessary for managing combustible dust risks in process design, inspection and maintenance activities.