NFPA 499: Recommended Practice for the Classification of Combustible Dusts and of Hazardous Locations for Electrical Installations in Chemical Process Areas, 2013 Edition

NFPA® 499 Recommended Practice for the Classification of Combustible Dusts and of Hazardous (Classified) Locations for Electrical Installations in Chemical Process Areas 2013 Edition

Chapter 1 Administration

1.1 Scope
1.2 Purpose
1.3 Application
1.4 Relationship to NFPA Codes and Standards

Chapter 2 Referenced Publications

2.1 General
2.2 NFPA Publications
2.3 Other Publications
2.4 References for Extracts in Recommendations Sections

Chapter 3 Definitions

3.1 General
3.2 NFPA Official Definitions
3.3 General Definitions

Chapter 4 Combustible Dusts

4.1 General
4.2 Combustible Dust Testing
4.3 Additional Potential Combustible Dust Hazards
4.4 Hybrid Mixtures
4.5 Electrostatic Discharges
4.6 Ignition Criteria

Chapter 5 National Electrical Code (NEC) Criteria

5.1 Classification of Class II Hazardous Locations and National Electrical Code (NEC) Criteria
5.2 Classification of Combustible Dusts

Chapter 6 Classification of Class II (Combustible Dust) Locations

6.1 General
6.2 Conditions Necessary for Ignition of Combustible Dust
6.3 Class II, Division 1 Classified Locations
6.4 Class II, Division 2 Classified Locations
6.5 Unclassified Locations
6.6 Procedure for Classifying Areas
6.7 Housekeeping
6.8 Extent of Hazardous (Classified) Locations
6.9 Discussion of Diagrams and Recommendations
6.10 Classification Diagrams

Annex A Explanatory Material
Annex B Informational References
Index