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Anthony Scopatz committed Jul 30, 2011
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28 changes: 14 additions & 14 deletions se_sensitivity/se_sensitivity_paper.tex
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Expand Up @@ -90,7 +90,7 @@ \subsection{Overview of Methods}
the LWR, for instance burnup and spent fuel isotopic composition, are
the reference values adopted in a recent OECD Nuclear Energy Agency (NEA)
systems study \cite{NEA-5990}. The fuel cycle material balance strategy for FR
multirecycle is identical to that used in both the OECD and the AFC R\&D
multi-recycle is identical to that used in both the OECD and the AFC R\&D
studies: to reach the designated burnup level, the first core of the FR
is loaded with only DU and retrieved TRU from LWR UF. The second and
subsequent cycle are loaded with TRU and U from FR UF plus retrieved
Expand Down Expand Up @@ -146,7 +146,7 @@ \subsection{System Performance Assessment}
\mbox{FCC}_t = C_u \cdot s
\end{equation}
where $C_u$ [\$/KgHM or \$/SWU] is the unit charge and $s$ [kgHM/yr or SWU/yr]
is the service ammount. The FCC [\$/MWh] may then be obtained by dividing the
is the service amount. The FCC [\$/MWh] may then be obtained by dividing the
FCC\subscript{t} total charge [\$/yr] by the annual electricity production [MWh/yr].

A fuzzy logic based barrier method is used to evaluate the
Expand Down Expand Up @@ -181,7 +181,7 @@ \subsection{System Performance Assessment}
8 & DoseRate & mrem/hr/kg & Dose rate at 1-meter distance\\
9 & Concentration & \# of CM/kg & Concentration of fissile material\\
10 & Detectability & & Detectability levels (Five levels)\\
11 & FacilityModTime & weeks & Modification timeto produce 1 CM in a year\\
11 & FacilityModTime & weeks & Modification time to produce 1 CM in a year\\
12 & AccessFrequency & days/yr & Frequency of possible access to facility\\
13 & AvailableMass & \# of CM & Available fissile materials\\
14 & MeasureUncert & \# of CM/yr & Uncertainty of measurement\\
Expand Down Expand Up @@ -305,7 +305,7 @@ \subsection{Benchmark Cases}
\label{ses_table4}
\begin{tabular}{|l|c|c|}
\hline
\textbf{Nuclide} & \textbf{PWR Fresh} & \textbf{PWR UF} \\
\textbf{Nuclide} & \textbf{LWR Fresh} & \textbf{LWR UF} \\
\hline
\nuc{Am}{241} & & 4.74E-04\\
\nuc{Am}{243} & & 2.13E-04\\
Expand Down Expand Up @@ -345,8 +345,8 @@ \subsection{Benchmark Cases}
\begin{center}
\caption{Scheme 3a System and Reactor Design:
0.71\% NU is enriched to 4.20\% for UOX with tail enrichment
0.25\%; capacity of the PWR is 1450 MWe. The load factor is 90\%. The
burnup is 50 MWd/kgIHM for PWR and the UF is decayed for 6 years
0.25\%; capacity of the LWR is 1450 MWe. The load factor is 90\%. The
burnup is 50 MWd/kgIHM for LWR and the UF is decayed for 6 years
before it is reprocessed. The retrieved TRU is mixed with DU for
FR fresh fuel. The FR burnup is 140 MWd/kgIHM and the FR UF
is reprocessed after 3 years of decay. The capacity of the FR is 600 MWe and the
Expand Down Expand Up @@ -436,7 +436,7 @@ \subsection{Benchmark Results}
does provide the TRU isotopics that serve as the starting point for the
calculations carried out by the tool. The procedure described in
\S \ref{1g_paper} was used to perform cycle iterations until the FR fuel
composition converged to equilibrium. Good agreement on the PWR to FR
composition converged to equilibrium. Good agreement on the LWR to FR
power split, charge and discharge inventories and the FCC for scheme 3a
can be observed. Whether the difference observed for scheme 3a can be
ascribed to the FR simulation tool, or to inconsistencies in the LWR
Expand Down Expand Up @@ -481,7 +481,7 @@ \subsection{Benchmark Results}
\hline
\textbf{Parameter} & \textbf{OECD 2006} & \textbf{Results} & \textbf{\% Difference} \\
\hline
Electricity Share: PWR [\%] & 63.2 & 66.1 & 4.59 \\
Electricity Share: LWR [\%] & 63.2 & 66.1 & 4.59 \\
Electricity Share: FR [\% ] & 36.8 & 33.9 & -7.88 \\
\hline
UOX FF [kg/TWh\subscript{e}] & 1513 & 1583 & 4.63 \\
Expand Down Expand Up @@ -704,7 +704,7 @@ \subsubsection{Material Balance and Isotopics}
streams converges quickly toward an apparent equilibrium after only a
few cycles. The criterion described in Table \ref{ses_table11} leads to equilibrium
being reached at cycle 10. Therefore Figure \ref{ses_fig06} is very similar to the
cooresponding Figure \ref{1g_fig18} in \S \ref{1g_paper}.
corresponding Figure \ref{1g_fig18} in \S \ref{1g_paper}.

\begin{figure}[htbp]
\caption{Input Streams to FR Fuel Fabrication [kg/kgIHM]}
Expand Down Expand Up @@ -1066,13 +1066,13 @@ \section{Conclusions}
recalculates the transient and equilibrium FR cycle material balances.

This new framework was applied to an AFC R\&D-inspired LWR and transmuter
FR fuel cycle architechture. Partitioning strategies were varied with
FR fuel cycle architecture. Partitioning strategies were varied with
Np, Am/Cm, and Cs/Sr alternatively being partitioned for recycle or storage
or sent to the repository with the low heat emitting fission products.
Elemental separation efficinecies were also varied with values of
Elemental separation efficiencies were also varied with values of
90\% to 99.99\% being considered. It was shown that the efficiency
of repository space usage, meausred by the energy produced by the fuel from
which the HLW placed in the repository was derived, can be imporved by
of repository space usage, measured by the energy produced by the fuel from
which the HLW placed in the repository was derived, can be improved by
more than two orders of magnitude if 99.99\% separation efficiency is
achieved and Cs/Sr are partitioned. If Cs/Sr are not partitioned, it was not seen
to be worthwhile to exceed 99.9\% efficiency. On the other hand,
Expand All @@ -1095,6 +1095,6 @@ \section{Conclusions}
incorporates needed feedbacks between components. As such, a stochastic
system wrapper that invokes this new fuel cycle tool could efficiently
search the parameter space. This wrapper would be capable of generating
a large number of histories such that an information-theortic approach
a large number of histories such that an information-theoretic approach
would also be needed to extract the relevant analyses from the data set.

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