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Determining the Proper Area Electrical Classification for Class I Areas

Coming Winter 2024

6 hours


This course provides a solid working knowledge of the methods to classify areas. It is intended for all levels of personnel from managers to craftspeople. This course focuses on plant scale equipment and operations. 



During this course, you will:

  • Gain the information to determine the appropriate area electrical classification for your processes and processing equipment
  • Learn the procedures involved in classifying hazardous electrical locations
  • Analyze the safety of equipment installations


Instructor: Richard Palluzi

Course Hours

You Will Earn

You Will Earn

All hours listed are in Eastern Time

9:00 am – 4:00 pm

You Will Earn

You Will Earn

You Will Earn

2.0 Continuing Education Units
20 Professional Development Hours

Course Details

Basic Principles

  • Flammability
  • Flash Points
  • Autoignition Temperatures
  • Explosion Types
  • Explosive Limits
  • Inerting
  • Oxygen Enriched Atmospheres

General and Class I Locations

  • History of the code
  • Overall definitions
  • Class I locations
  • Code examples
  • Mitigating conditions
  • Division 1 vs. Division 2
  • Group determination
  • T-Ratings
  • IEC zone definitions
  • Classes vs zones
  • Class examples
  • Guidance documents
    • OSHA
    • NFPA-497
    • API-520
    • IEC
  • Classification procedure
  • Openings
  • Ventilation
  • Classification probabilities
  • Miscellaneous issues

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