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NFPA 497: Recommended Practice for the Classification of Flammable Liquids, Gases, or Vapors and of Hazardous (Classified) Locations for Electrical Installations in Chemical Process Areas, 2012 Edition

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NFPA 497: Recommended Practice for the Classification of Flammable Liquids, Gases, or Vapors and of Hazardous (Classified) Locations for Electrical Installations in Chemical Process Areas, 2012 Edition
Item # 49712
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NFPA® 497 Recommended Practice for the Classification of Flammable Liquids, Gases, or Vapors and of Hazardous (Classified) Locations for Electrical Installations in Chemical Process Areas 2012 Edition

NFPA® 497 Recommended Practice for the Classification of Flammable Liquids, Gases, or Vapors and of Hazardous (Classified) Locations for Electrical Installations in Chemical Process Areas 2012 Edition

Chapter 1 Administration
1.1 Scope
1.2 Purpose
1.3 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 Classification of Combustible Materials
4.1 National Electrical Code Criteria
4.2 Behavior of Class I (Combustible Material) Gases, Vapors, and Liquids
4.3 Conditions Necessary for Ignition
4.4 Classification of Class I Combustible Materials
Chapter 5 Classification of Class I (Combustible Material) Areas
5.1 General
5.2 Class, Division, Classified Locations
5.3 Class I, Zone Classified Locations
5.4 Unclassified Locations
5.5 Extent of Classified Locations
5.6 Discussion of Diagrams and Recommendations
5.7 Basis for Recommendations
5.8 Procedure for Classifying Locations
5.9 Classification Diagrams for Class I, Divisions
5.10 Classification Diagrams for Class I, Zones
Annex A Explanatory Material
Annex B Example of a Method for Determining NEC Group Classification for Mixtures
Annex C Informational References
Index
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