E.T. Gitau and W.S. Charlton,
"Use of a Microsphere Fingerprint for Identity Verification of Fuel Pebbles in a Pebble-fueled HTGR,"
40(2), 19-25 (2012).
The continued development of a commercial-scale pebble-fueled
high-temperature gas-cooled reactor (PF-HTGR) in the People's
Republic of China (PRC) will lead to an exportable design within
the next fifteen years. The potential export of the design
has renewed the need for a safeguards system capable of adequately
accounting for the fuel present at a PF-HTGR facility.
Previously proposed methods utilized extensive redundant
containment and surveillance (C/S) systems or some combination of
item- and bulk-type material accountancy that are incapable of
restoring continuity of knowledge in the event of a failure of the
C/S or accountancy systems. Using a recently proposed
verification system based on the use of a microsphere fingerprint
in each fuel pebble, the uncertainties in the material unaccounted
for (MUF) in potential material accountancy systems were explored
for an abrupt and protracted diversion from a hybrid safeguards
approach and a new item-type safeguards approach.
Associated Project(s):Safeguards System Concept for Pebble-fueled High Temperature Gas-Cooled Reactor