Multi-Canister Overpack (MCO) & Transportation Cask
SARP
Q-Metrics provided the thermal
safety analysis of the MCO and MCO transportation cask for the safety analysis
report for packaging (SARP). The SARP evaluated operations at the DOE Hanford
Site and covered the transfer of spent nuclear fuel (SNF) between the K-Basins
and the Cold Vacuum Drying Facility (CVDF)
and
between the CVDF and the Canister Storage Building (CSB). This work, initiated
with the conceptual design analysis for the cold vacuum drying process and the
now abandoned ‘hot conditioning process’, provided bounding safety analysis and
operational calculations for the thermal and gas generation sections of the SARP.
The calculations involved
working with SNF Project personnel to establish the appropriate reaction rate
equations for chemical heat and gas generation, the bounding reaction areas for
the damaged fuel and scrap elements, and the operational constraints to be
applied to the analysis. The generation of hydrogen gas
from the reaction of the uranium metal with water was an important part of the
analysis. Two distinct modes of transfer were evaluated: water
flooded during the transfer between the K-Basins and the CVDF, and in a dry,
inert atmosphere during the transfer between the CVDF and the CSB.
In an associated work scope
with the MCO Transportation Cask SARP, Q-Metrics authored the thermal chapter
for the MCO Topical Report. This work involved coordinating the work of a
number of contractors, providing a consistency check between the various parts
of the work, and assembling the V&V documentation for the work.
Q-Metrics
was also called upon to address comments
received on the SARP analysis
from the Dept. Of Energy's review team and
from the DNFSB (Defense Nuclear
Fuel Safety Board) and to provide peer review
support for miscellaneous studies conducted by other
engineering organizations.
