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  • Contents
  • Contents

    Full Publication

    Figures Used in this Guide
    iv
    Tables Used in this Guide
    v
    Preface
    vii
    Acknowledgments
    viii
    Introduction
    1
    Hotwork in Confined Spaces
    1
    Natural Ventilation in Confined Spaces
    1
    Why Ventilate Confined Spaces?
    2
    Some Health Hazards of Hotwork
    2
    Ventilation Requirements
    3
    Benefits of Ventilation
    3
    Atmospheric Testing and Personal Air Monitoring
    4
    Mechanically Assisted Ventilation Fundamentals
    4
    Air-Moving Devices
    4
    Factors Reducing Air-Moving Device Performance
    4
    Increasing Air-Moving Device Performance
    5
    Electrically Driven Centrifugal Fans
    6
    Local Exhaust
    7
    Make-up Air Quality
    8
    Measuring Airflow
    9
    Airflow Through a Vessel
    9
    Local Exhaust Devices
    11
    Applied Ventilation Examples
    11
    Vertical Vessels
    11
    Spherical Vessels
    15
    Horizontal Vessels
    16
    Local Exhaust
    17
    Furnaces
    18
    Push vs. Pull
    19
    Ventilation of Large Vessels
    21
    References
    22
    Further Reading
    22
    Appendix
    23

    Field Guidelines for the Temporary Ventilation of Confined Spaces, with an Emphasis on Hotwork


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