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Contamination Control Ventilation
Table Of Contents
Chapter 1: Introductory Concepts
Infectious Air Contamination
Airborne infection transmission
Effects of varying the degree of exposure
Air changes vs probability of contracting illness
Toxic Vapor Contamination
Degree of exposure
Minutes required for contamination removal
Bipolar Flow
Bipolar flow across a doorway
Chapter 2: Ventilation Considerations
Infectious Contamination Ventilation Control
Probability of infection vs degree of exposure
Infectious Contamination and Commercial Facilities
Percent workers which can be infected
Characteristics of Airborne Contamination Spread
Particle setting time in still air
Piston Type Air Flow
Vertical laminar airflow
Horizontal laminar airflow
Airborne dust flow vs airflow direction and air changes
Airborne bacteria movement vs airflow direction and air changes
Chapter 3: Air Distribution Techniques
The Pull Part of Push - Pull Ventilation
Decrease in capture ventilation velocity vs distance
In-room system layout
Room airflow pattern - High and low register on same wall
Ventilation at breathing level - With ceiling supply and return
Ventilation with one ceiling diffuser and two low returns
Room airflow with wall-mounted diffuser
Ceiling diffuser patterns
Chapter 4: UVGI And Ventilation
Ultraviolet and Ventilation in General
Ventilation Duct irradiation
Upper room irradiation
Safety issues
Maintenance and Monitoring
Maintenance Monitoring
Upper Room Irradiation and Room Ventilation
Colonies of test bacteria vs time and Ventilation
UV intensity vs distance
UV lamp factor vs bacteria kill
UV door fixture vs Ventilation
Degree of exposure, effects on Ventilation
Air changes vs probability of contracting illness
In Duct Ultraviolet Fixture Use
UV output vs air velocity vsDuct velocity
Duct UV systems - small ducts
Duct UV systems - large ducts
Chapter 5: Local Ventilation
Decrease in capture velocity vs distance
Enclosing booth
Enclosure hood over contamination source
Wall mounted capture unit
Decrease in capture velocity vs distance
Dry Cleaning machines and similar devices vapor producing devices
Laser Surgical procedures and required Ventilation
Local Exhaust - Small Printing Press
Controlling Silica dust from casting cleaning
The downdraft hood
Open Tanks Utilized with Hoods
Suspension hood
Bad tank capture
Slot hood
Push - Pull capture hood
The Push - Pull hood arrangement
Dry Powder Transfer
Dry powder transfer booth ventilation and similar uses
Chapter 6: Laboratory Exhaust Equipment
Class 1 BSC
Class II BSC
Type A, Class II BSC
Type B, Class II BSC
Type B1, Class II, BSC
Type B2, Class II, BSC
Type B3, Class II, BSC
Class III, BSC
Horizontal Laminar Flow Clean Bench
General Considerations
Biological Safety Cabinet Classifications
Fume Hoods
Conventional Fume Hoods
Conventional fume hood - sash mostly closed
Conventional fume hood - sash open
Bypass Fume Hoods
Bypass fume hood - sash mostly open
Bypass fume hood - sash mostly closed
Direct Makeup Air Hood
Variable Air Volume Hood
Simple Capture Hoods
Complex Capture hoods
Dilution And Local Exhaust
The Air Lock
Air lock purge requirements
Air lock concept
Chapter 7: Effluent Discharge Building Discharge Considerations Exhaust discharge configurations Effective exhaust stack height Low buildings Tall buildings Chapter 8: Specific cases Hospital Emergency Room Situations Combination Office and Laboratory Building Office Buildings
Chapter 9: Testing And Certification In Place Biosafety Cabinets Fume Hoods Local Exhaust Capture Hoods Face velocity Capture velocity Capture hood testing Capture Hood Efficiency Hood effectiveness Performing the 100% capture test Finalizing capture efficiency Chapter 10: Regulations, Standards And Guidelines OSHA General Duty Clause OSHA Standard 1910.94, Ventilation OSHA Standard 1910.1450 Laboratories Medical labs Labs that use toxic materials Biological Safety Cabinets
Appendix A: Sample Specification For Typical Isolation Area With An Anteroom Airlock Appendix B: Utilizing Tracer Gas To Evaluate Building Contamination Appendix C: Selected OSHA Standards Appendix D: OSHA Isolation Room Testing Guide Appendix E: Bibliography Appendix F: References Appendix: G Glossary Click Here For The Order Form Click Here to go to our HVAC Publication List Click Here to go to our main Publication List
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