Secure Buildings: Pre-Event Advice – Long-Term: HVAC Control Systems
Airflow and Polutant Transport Group
Lawrence Berkeley National Laboratory Logo Blue steps Blue steps Indoor Environment Department
Advice for Safeguarding Buildings
Against Chemical or Biological Attack
Home
Pre-Event Advice
Immediate
Long-Term
During Release
Indoor Release
Outdoor Release
Unknown Release
Vulnerability Assessment
Buildings
Airports
Training Aids
Animation
Information
Related Links
Contact Us
Webmaster
 
Printer Version
Acknowledgments
Privacy, Security and Disclaimer Notice
 
Last Updated
April 27, 2005

Pre-Event Advice – Long-Term

Ensure that building operators can quickly manipulate the HVAC control systems to respond to different kinds of attack.

It should be possible to immediately shut off the HVAC system (including closing dampers that admit outdoor air and closing exhaust dampers), or to put the system on 100% fresh (outdoor) air. Dampers should be checked for leakage, and replaced or repaired if necessary.

Areas served by different air handling units should be surveyed and clearly shown on floor plans so that building operators know which supply and exhaust systems serve which areas. Maintain an updated copy of the ventilation plans in the room(s) from which the HVAC system can be controlled.

There should be at least one secure location (preferably more) from which the whole HVAC system can controlled, so it is not necessary to move through a contaminated building to manipulate the system.

Back to List of Actions | Next

Home : Printer Version : Contact Us : Webmaster
Airflow and Polutant Transport Group : Indoor Environment Department : Berkeley Lab