Basic Documentation

Purpose of this Guide
Radioisotope Fume Hoods..................................................................................................... 39
Chapter 6–Laboratory Containment Units - Ventilation........................................................... 41
Containment Units .................................................................................................................... 41
Containment Units and Ventilation......................................................................................... 41
Biological Safety Cabinets .....................................................................................................42
Chemical Fume Hoods........................................................................................................... 45
Fume Hood Containment .................................................................................................... 46
Fume Hood Face Velocity ................................................................................................... 46
Ventilation for Chemical Fume Hoods................................................................................. 47
Fume Hood Monitoring........................................................................................................ 54
Chapter 7–Room Ventilation, Makeup Air, and Pressurization Control Systems................. 55
Laboratory Ventilation - Room System Configuration .............................................................. 55
Room Environmental Modeling................................................................................................. 60
Laboratory Room Pressurization.............................................................................................. 62
Pressurization Concept.......................................................................................................... 62
Room Pressurization Control by Pressure Sensing............................................................... 64
Advantages and Disadvantages of Room Pressurization Control by Pressure Sensing.... 65
Room Pressurization Control by Airflow Tracking .................................................................67
Advantages and Disadvantages of Room Pressurization Control by Airflow Tracking....... 69
Cascaded Static Pressure Control......................................................................................... 69
Dual Pressurization of Laboratories....................................................................................... 70
Chapter 8–Laboratory Temperature and Humidity Control Systems.....................................73
Room Temperature Control by Temperature Sensing ............................................................. 73
Variable Air Volume Room Temperature Control..................................................................... 74
Room Temperature Control by BTU Compensation ................................................................75
Laboratory Room Humidity Control........................................................................................ 78
Humidification Systems.......................................................................................................... 80
Humidity Control for General Applications .......................................................................... 80
Individual Laboratory Room Humidity Control..................................................................... 81
Humidity Sensor Location.................................................................................................... 81
Dehumidification .................................................................................................................. 82
Chapter 9–Laboratory Emergencies - Ventilation System Response.................................... 83
Ventilation Systems for Emergencies....................................................................................... 83
Fire............................................................................................................................................84
Chemical or Biological Emergency........................................................................................... 85
Medical Emergency .................................................................................................................. 85
Other Emergencies................................................................................................................... 85
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