Bag In Bag Out units in a university research facility. These are exhaust units for a BSL-3 containment lab.

Containment system on the roof of a pharmaceutical plant.

Air filtration systems must be designed, installed, tested, and maintained throughout their service life. Precision Air Technology has the expertise to assist owners and operators of containment systems with design, components, and system factory qualification. All of our services are listed below.

Pre- Construction Design Consulting

• Project consulting based on many years of experience in the design, manufacturing, quality control, factory and field start-ups and testing. We can assist with the design, construction and qualification of containment equipment for your project.
• High-purity air filtration systems components design, qualification and testing performed in accordance with ASME AG-1 Code on Nuclear Air and Gas Treatment.

  On-site Inspection and Testing Capabilities

*Field testing of HEPA and HEGA (carbon adsorbers) filters and system components integration

* Nondestructive examinations – pressure change measurement, bubble leak testing

* Certified weld Inspections

   System Maintenance

*Training of facility operations and maintenance personnel

* Preventive maintenance inspections of containment equipment

Test equipment set up for testing carbon/HEPA housing.

This cart contains  all the equipment needed to test HEPA filters and high efficiency carbon banks. The two stacked instruments are halide detectors, which are used to test the carbon filters. The freon generator (bottom left) injects a concentration of freon into the system to “challenge” the carbon filters. A photometer (to right of halide detectors) will measure the upstream and downstream PAO aerosol (generator bottom shelf on right) to determine the efficiency of the HEPA filter bank.

Carbon/HEPA system out of service for filter replacement and testing.

We replaced all filters in this unit- prefilters, HEPA’s, and carbons. It is now set up to test. The clear plastic hose on the left is connected to aerosol mixing tubes for PAO injection upstream of the HEPA bank. The small green hose on the right is positioned downstream of the blower to measure any aerosol that  penetrated the HEPA filters, frames, and frame to housing welds.