06/13/2019
AACON has successfully executed another project for the U.S. Army Corps of Engineers. With the project being a “Design Build” delivery method, the FEMA NINE Facilities Project was created to facilitate nine (9) facilities, seven (7) with Sealing of Windows, Doors, Ceilings and Shut Down/Isolation of HVAC with Integrated Controls and signaling of doors and two (2) facilities receiving an “Over Pressure Filtration System” within the Richmond, KY community with a “Safe Haven” room or structure for sustaining life during a “Hazardous Emergency Alert”. AACON was responsible for; Designing, Procuring, Constructing, Installing and Testing of said structures or facilities receiving the “Safe Haven” Scope of Work. In doing so, AACON performed the action task(s) of installing a “Safe Haven” Neoprene Door Gasketing material around each door (Jambs & Head of Door Frames) as well as placing a “Haven” threshold in completing the “Safe Haven” barrier around each door positioned within the “Protected Barrier” as designated by the Plans & Specifications.
In addition to sealing each door, window and penetrations in the ceilings, AACON was required per Plans and Specifications to Shut Down all HVAC equipment (RTU’s, AHU’s, Exhaust Fans, etc.) and install Isolation Dampers in duct work that feed the “Protected Area”. All perimeter doors of the “Protected Area” were signaled to show that they were secured properly with the use of Magnetic Door Sensors. AACON installed a Master Control Panel in each of the facilities that allowed the tenants the ability to have normally controlled air in their regular day to day operations and from the push of the “Emergency System Start” button, the systematic shut down of all HVAC equipment, the closing of Isolation Dampers, and the signaling of Doors open/closed is initiated.
Two (2) of the Nine facilities received an enhanced “Safe Haven” system that “Over Pressurized” the facilities. In performance, the system over pressurized the “Protected Area” by forcing conditioned air into newly installed double wall insulated spiral duct that connected to the existing HVAC duct system with the use of multiple Hunter Protective Systems Filtration Fan Units. Emergency Power Generators were also installed to assure the safety of those in the “Protected Area” is maintained even during a power outage. The “Over Pressurized System” is integrated with a Master Control Panel that allows the tenant the ability to have normally controlled air in their regular day to day operations and from the push of the “Emergency System Start” button, the systematic shut down of all HVAC equipment, the closing of Isolation Dampers, the initiation of pressurized controlled air into the space and the signaling of Doors open/closed.
In accomplishing the success of an “Over Pressurized System” within the designated facilities, a specific design criteria was required; 1.) Structurally designing and installing a new “Cold Rolled Steel” metal framed ceiling using 12-gauge framing member at an average length of 25’-0” attaching to the existing wall framing using a metal ledger material of equal gauge and dimension, 2.) Lowering of all existing fire sprinkler heads, 3.) Lowering of all existing HVAC system service branch lines to new ceiling elevations, 4.) Removing and reinstalling existing light fixtures. 5.) Integration of existing electrical circuitry into the Emergency Power System.
Though the project was met with many challenges throughout the ex*****on of work, it was the leadership and experienced personnel that prevailed on meeting and exceeding the expectation of the USACE.