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    Class and Course
    1. NExT
    2. Health Safety and Environment (HSE)
    3. Ex Hazardous Area Classification

    Ex Hazardous Area Classification

    • Skill
    • 5 Days
    • classroom1Classroom

    Course Objectives:

    • To provide guidelines for classifying locations Class I, Zone 0, Zone 1, and Zone 2 at petroleum facilities for the selection and installation of electrical equipment
    Who Should Attend?
    • This course is suitable for those associated with the operation risk management process, which includes all design, operation, and maintenance activities (operation teams, maintenance engineers including electrical and instrumentation, Contractors, and health and safety engineers).
    Course Outlines
    • Introduction to Hazards area classification and learning from experience.
    • Terms and Definitions.
    • Industry-related Codes, Guides, and Standards.
    • Basic Conditions for a Fire or Explosion.
    • Flammable and Combustible Liquids, Gases, and Vapors.
    • Classification of areas – Explosive dust atmospheres (related standard)
    • National Electrical Code Grouping of Atmospheric Mixtures
    • Classification Criteria
    • HAC different approaches
    • Sources of Release
    • Zone Designation
    • Extent of Zone (Zone 20, 21 and 22).
    • Examples of Zone 20, 21, and 22.
    • Dust Layers
    • Factor to be in consideration during HAC
    • Ventilation
    • Housekeeping Levels.
    • Explosive limits.
    • Minimum ignition parameters.
    • Adjacent Areas
    • Use of Combustible Gas Detection Equipment
    • Extent of a Classified Location
    • Outdoor Locations
    • Enclosed Locations
    • Recommendations for Determining Degree and Extent of Classified Locations
    • Hazardous Area Classification Process
    • Point Source Methodology
    • Direct Example Methodology
    • Risk Based Methodology
    • Hazards Area Classification Case Study including Dust explosion example.
    • HAC Report and recommendations.
    • Different software for HAC Study.
    • ATEX Regulations.
    • Course Review and Final Assessment

    • Pre-test
    • Introduction to Hazards area classification and learning from experience.
    • Terms and Definitions.
    • Industry-related Codes, Guides, and Standards.
    • Basic Conditions for a Fire or Explosion.
    • Flammable and Combustible Liquids, Gases, and Vapors.
    • Classification of areas – Explosive dust atmospheres (related standard)
    • National Electrical Code Grouping of Atmospheric Mixtures
    • Review of day one. 
    • Day one assessment. 

    • Day 1 Recap
    • Classification Criteria
    • HAC different approaches
    • Sources of Release
    • Zone Designation
    • Extent of Zone (Zone 20, 21 and 22).
    • Examples of Zone 20, 21, and 22.
    • Dust Layers
    • Factor to be in consideration during HAC
    • Review of Day 2
    • Day 2 Assessment

    • Day 2 Recap.
    • Ventilation
    • Housekeeping Levels.
    • Explosive limits.
    • Minimum ignition parameters.
    • Adjacent Areas
    • Use of Combustible Gas Detection Equipment
    • Extent of a Classified Location
    • Outdoor Locations
    • Enclosed Locations
    • Recommendations for Determining Degree and Extent of Classified Locations
    • Group Discussion
    • Review of Day 3
    • Day 2 Assessment

    • Day 3 Recap
    • Hazardous Area Classification Process
    • Point Source Methodology
    • Direct Example Methodology
    • Risk Based Methodology
    • Group Discussion
    • Review of day 3
    • Day 2 Assessment

    • Day 4 Recap
    • Hazards Area Classification Case Study including Dust explosion example.
    • HAC Report and recommendations.
    • Different software for HAC Study.
    • ATEX Regulations.
    • Course Review and Final Assessment
    • Group workshop
    • Review of Day 5
    • Final exam
    • Course quality evaluation form

    • All design, operation, and maintenance activities
    • Operation teams
    • Maintenance engineers
    • Electrical and instrumentation
    • Contractors
    • Health and safety engineers



    • Introduction to Hazards area classification and learning from experience.
    • Terms and Definitions.
    • Industry-related Codes, Guides, and Standards.
    • Basic Conditions for a Fire or Explosion.
    • Flammable and Combustible Liquids, Gases, and Vapors.
    • Classification of areas – Explosive dust atmospheres (related standard)
    • National Electrical Code Grouping of Atmospheric Mixtures
    • Classification Criteria
    • HAC different approaches
    • Sources of Release
    • Zone Designation
    • Extent of Zone (Zone 20, 21 and 22).
    • Examples of Zone 20, 21, and 22.
    • Dust Layers
    • Factor to be in consideration during HAC
    • Ventilation
    • Housekeeping Levels.
    • Explosive limits.
    • Minimum ignition parameters.
    • Adjacent Areas
    • Use of Combustible Gas Detection Equipment
    • Extent of a Classified Location
    • Outdoor Locations
    • Enclosed Locations
    • Recommendations for Determining Degree and Extent of Classified Locations
    • Hazardous Area Classification Process
    • Point Source Methodology
    • Direct Example Methodology
    • Risk Based Methodology
    • Hazards Area Classification Case Study including Dust explosion example.
    • HAC Report and recommendations.
    • Different software for HAC Study.
    • ATEX Regulations.

    • Fundamental knowledge of health, safety, environment, and risk management

    Currently there are no scheduled classes for this course.

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