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5 Hot Fuel Examination Facility Located at the INL Materials and Fuels Complex the Hot Fuel Examination Facility HFEF is a large heavily shielded alpha-gamma hot cell facility designed for remote examination of highly irradiated fuel and structural materials. Its capabilities include non- destructive dimensional measurements and neutron radiography and destructive exami- nation such as mechanical testing or metallographicceramographic characterization. It can accept full-size light water reactor fuel assemblies 386 cm or 152 inches. HFEF comprises two adjacent large shielded hot cells in a three-story building as well as a shielded metallographic loading box an unshielded hot repair area and a waste charac- terization area. The main cell argon atmosphere has 15 workstations each with a view- ing window and a pair of remote manipulators. A decontamination cell air atmosphere has six similarly equipped workstations. The cells are equipped with overhead cranes and overhead electromechanical manipulators. Cell exhaust passes through two stages of HEPA filtration. The facility is linked to analytical laboratories and other facilities by pneumatic sample transfer lines. Each main cell work station has removable electrical and lighting feed-throughs that can be changed to accommodate the mission of the station. The main cell is equipped with two rapid insertion ports for quick transfer of small tools and items into the cell. The decontamination cell contains a spray chamber for decontaminating equipment and non-fissile material using a manipulator-held wand. Material handling takes place via a 750-pound electromechanical manipulator a 5-ton crane and six sets of master-slave manipulators. The hot repair area is available for contact maintenance on cell equipment it can also be used for transfer of equipment and materials to or from the decontamina- tion cell. HFEF also has a 250 kW Training Research Isotope General Atomics TRIGA reactor for neutron radiography irradiation to examine internal features of fuel elements and assemblies.