S. Chirayath, W. Charlton, A. Stafford, C. Myers, B. Goddard, J. Alfred, M. Carroll, M. Sternat, and E. Rauch,
"Risk Informed Safeguards Integration Studies for a Fast Reactor Fuel Cycle,"
Proceedings of the 51st Annual Meeting of the Institute of Nuclear Materials and Management
, Baltimore, MD, USA, July 11-15, 2010.
Fast reactors with a closed fuel cycle (FRFC) are important for
the sustainability, reliability, and security of the world's
long-term energy supply because of its potential to extract more
energy from the mined uranium than other fuel cycles and also due
to its capability to incinerate transuranic elements. Knowing this
vast potential, research activities on the FBRFC technology have
rejuvenated worldwide. Presence of three such systems among the six
proposed by the GEN IV International Forum marks their importance
for the future. However, Pu production and its use in large
quantities in these systems is a major safeguards concern. Hence,
it is prudent to assess the proliferation resistance (PR) of the
FRFC facilities for finding weak links, so as to ensure adequate
safeguards for Pu. Towards this objective, the Nuclear Security
Science and Policy Institute at the Texas A&M University is
carrying out pre-conceptual design studies for the integration of
modern safeguards directly into the planning and building of FRFC
facilities. A broad three step safeguards approach is adopted
consisting of; (1) quantitative SNM flow diagram development for
the FRFC, (2) PR assessment tool development for analyzing SNM
diversion scenarios, and (3) design of a safeguards system based on
the risk informed data obtained from the PR assessment.
Accordingly, the SNM flow diagram for the FBRFC was developed by
employing MCNP/ORIGEN/MONTEBURNS computer codes choosing the Indian
Proto-type FBR design details available from the open literature.
The PR assessment software, PRAETOR (proliferation resistance
analysis and evaluation tool for observed risk) based on the well
established multiattribute utility analysis decision methodology is
developed and employed. A set of 21 SNM diversion scenarios for the
three key FRFC facilities (fuel fabrication, fast breeder reactor
and fuel reprocessing) and a PWR spent fuel diversion scenario (as
a reference case) are analyzed using the PRAETOR tool. The details
of setting up material balance areas (MBA), material balance
periods (MBP), key measurement points (KMP), and the containment
& surveillance program based on a classical safeguards approach
are presented in addition to the risk informed safeguards approach
employing the PRAETOR tool.
Associated Project(s):Safeguards Approaches for Fast Breeder Reactors and Associated Fuel Cycle FacilitiesProliferation Resistance Methods Development