Classifying Explosion Prone Areas for the Petroleum, Chemical and Related IndustriesBy
- W.O.E. Korver
Safety engineers, plants managers and hygiene personnel in the chemical and petrochemical industries.
Hardbound, 442 Pages
Published: December 1995
Imprint: William Andrew
- IntroductionSection 1. Fundamentals1. Flammable and Combustible Principles of Hazardous Products A. General B. Flammable and Combustible Liquids C. Combustible Coke and Coal Dust D. Fire and Explosion Hazards in NEC Class I Locations2. Classifying Sources of Hazard A. Sources of Hazard B. When a Location is Hazardous C. Safety Versus Hazard in NEC Class I Locations D. Requirements for NEC Class I, Div. 1 and Div. 2 Locations3. The Extent of Explosion Danger for NEC Class I Locations A. General B. The Dimensional Outline of a Div. 1 and Div. 2 Zone C. Quantity of Flammable Substances Versus Extent of Explosion Danger D. Factors Influencing Quantities of Flammable Gases or Vapors E. Early and Remote Permanent Ignition Sources F. The Extent of Explosion Danger for Class II Flammable Products G. Transition Zones for NEC Class I Locations H. Additional Danger Zones I. Danger Zones Above Ground J. Classification of Sources of Hazard in Pump Stations Occupying 50, 75 or 100% Floor Space K. Fume Hoods L. Storage and Dispensing of Flammable Liquids M. Segregation4. Spatial Considerations A. Indoor and Outdoor Locations B. Roofed Spaces in Hazardous Areas C. Nonhazardous Spaces Above or Below Hazardous Areas D. Spaces Giving Access to Hazardous Areas5. The Degree of Explosion Danger for NEC Class H Locations A. General B. Detailed Requirements for NEC Class II, Div. 1 Locations C. Detailed Requirements for NEC Class II, Div. 2 Locations D. The Degree of Explosion Danger in Fossil Power Plants6. Ventilation Requirements A. General B. Natural Ventilation C. Mechanical Ventilation D. Approximate Location of Mechanical Ventilation E. Demarcation Line F. Safeguards G. Wiring Diagrams for Safeguards7. Electrical Equipment for NEC Class I Locations A. General B. Electrical Equipment Required for a Div. 1 Location C. Electrical Equipment Required for a Div. 2 Location D. Intrinsically Safe Electrical Equipment E. Marking of Electrical Equipment F. Construction of Explosion-Proof Enclosures G. Grouping of Electrical Equipment8. Electrical Equipment for NEC Class II, Group F Locations A. General B. Class II Div. 1 Locations C. Class II, Div. 2 Locations9. Intrinsically Safe Equipment and Wiring10. Installation of Electrical Instruments in Hazardous Locations A. Type Z Purging B. Type Y Purging C. Type X Purging11. Hydrogen Gas12. Cathodic Protection13. Static Electricity14. Grounding of Tanks, Pipelines, and Tank Cars15. Grounding Requirements for Electrical Equipment A. General B. Internal and External Grounding Conductors C. Supplementary Ground System16. Application of Seals in NEC Class I Locations A. General B. Class I, Div. 1 Locations C. Class I, Div. 2 Locations 17. Application of Seals in NEC Class II LocationsSection 2. Application of Fundamentals Environmental Conditions in NEC Class I Hazardous Locations 2.1 General Requirements for Group A 2.2 General Requirements for Group B 2.3 General Requirements for Group C 2.4 General Requirements for Group D 2.5 General Requirements for Group E 2.6 General Requirements for Group F 2.7 General Requirements for Group G 2.8 General Requirements for Group H 2.9 General Requirements for Group I 2.10 General Requirements for Group J 2.11 General Requirements for Group K Section 3. Examples Application Procedure for Classifying NEC Class I Locations A. General B. Steps to be Followed for Classifying a Hazardous Location C. Examples Appendix: Properties of Flammable Liquids, Gases and Solids Definitions Bibliography Index