Basic Documentation
Table Of Contents
- About this Application Guide
- Chapter 1–Introduction
- Chapter 2–Goals of the Laboratory Environment
- Chapter 3–Unique Ventilation Needs of a Laboratory Facility
- Chapter 4–Ventilation Systems Classification
- Chapter 5–Laboratory Facility Exhaust Systems
- Chapter 6–Laboratory Containment Units - Ventilation
- Chapter 7–Room Ventilation, Makeup Air, and Pressurization Control Systems
- Chapter 8–Laboratory Temperature and Humidity Control Systems
- Chapter 9–Laboratory Emergencies - Ventilation System Response
- Chapter 10–Laboratory Ventilation System - Validation
- Chapter 11–Laboratory Ventilation System - Commissioning
- Glossary
- Index
Laboratory Ventilation - Room System Configuration
Therefore, a laboratory room ventilation and system must be designed to meet the
following criteria:
• Provide adequate exhaust for all containment units (fume hoods, biosafety
cabinets, etc.), as well as for all other specialized exhaust needs.
• Ensure adequate total room exhaust to meet the desired overall room
ventilation (air change per hour rate) and maintain the required room ambient
conditions.
• Provide sufficient makeup air to replace the total amount of air being
exhausted from the room.
• Condition the supply air to maintain required room ambient conditions.
• Maintain room pressure relationships between the laboratory room and
adjacent non-laboratory areas to prevent laboratory room air from migrating
to other non-laboratory areas of the building.
Since maintaining a safe laboratory room environment is the primary goal, the room
arrangement and the ventilation system must be configured to maximize the
effectiveness of the ventilation process. Aside from ensuring that the proper amount
of conditioned supply and exhaust airflow will be provided, the laboratory room and
its ventilation system must also address the following factors:
The room layout arrangement must be conducive to maintaining a safe environment.
The focus is on such aspects as the primary and secondary entry/exits, location of
the fume hoods and/or biological safety cabinets, placement of chemical storage
cabinets, gas cylinder storage provisions, and arrangement of other laboratory
equipment.
The room airflow pattern must be established to maximize the ventilation airflow
effectiveness. This requires addressing many issues such as the quantity, size and
type, as well as the location of the supply air diffusers.
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