Fission Product Transport and Source Terms in HTRs: Experience
                         from AVR Pebble Bed Reactor

<table>Dust concentrations in AVR in blower transient T3 (measured by dust filter
experiment).</table>

Science and Technology of Nuclear Installations

Figure 11: Fission Product Transport and Source Terms in HTRs: Experience
                         from AVR Pebble Bed Reactor 