WM2011 Conference, March 7-11, 2011, Phoenix, AZ

ABSTRACT HEPA filters are tested and inspected at the manufacturer and the Filter Test Facility to assure that they meet the requirements of nuclear codes, standards, and site specifications. Once the filter reaches the site many factors will determine if the filter operates as intended. This paper addresses some of the design considerations and factors that can avoid problems with HEPA filters used in containment applications. Common issues associated with filter malfunction or failure include the following: improper installation, exposure to moisture, high aerosol loading rates, gases and fumes from equipment; and process upset conditions including fires