Results from Evaluation of ASME AG-1 Section FK Radial Flow HEPA Filters - 11287

The American Society of Mechanical Engineers (ASME) Code on Nuclear Air and Gas Treatment (AG-1) has recently added Section FK establishing requirements for radial flow High Efficiency Particulate Air (HEPA) filters. AG-1 Section FK radial flow filters are expected to be a major element in the HEPA filtration system of Department of Energy (DOE) facilities. Radial flow filters have been used in Europe for some time, however, a limited quantity of data exists with respect to evaluating the performance of these new AG-1 Section FK units. In consultation with a technical working group, the Institute for Clean Energy Technology (ICET) at Mississippi State University (MSU) is evaluating a series of AG-1 Section FK radial flow HEPA filters. Filters are evaluated utilizing three challenge aerosols ranging in particle size from 0.3 µm to greater than 5 µm. Temperature, static pressure, volumetric flow rate, mass loading rate, differential pressure, and relative humidity are monitored during the course of testing each filter. Testing results include mass loading curve and filtering efficiency versus differential pressure. Also, the Particle Size Distribution (PSD) upstream of the filter is examined. Finally the downstream Most Penetrating Particle Size (MPPS) and Geometric Standard Deviation (GSD) as a function of differential pressure are revealed. Images of the filter pack collected during testing are also presented.