HVAC Upgrade to Boeing Everett Paint Hangar, Building 45-03

FSi designed a state-of-the-art ventilation system to increase capture of paint overspray and to retrofit the hangar to accommodate a 787 airplane.

FSi provided the HVAC design of the primary/secondary air system to effectively capture paint over spray and eliminate contamination of the painted surface. The system included 500,000 cfm of ventilation, air distribution and diffusion with the ability to discharge 160° air for paint curing. The renovation included replacement of all major ventilation equipment including supply and exhaust fans.

Our design uses a different fan type than the original fans, reducing the noise level in the hangar. In addition, the design gave careful consideration to the sizing of all airflow control dampers to achieve linear control.

FSi also provided fire protection upgrades. We revised the AFFF and wet sprinkler system, including the use of grated nozzles for the floor level protection.

The project and design received awards including:

• 2009 ACEC Engineering Excellence Gold Award in the Complexity category
• 2009 ASHRAE Region XI Technology First Place Award in the Existing Industrial Facilities or Processes Category