MIT LMFBR blanket research project. Quarterly progress report, January 1, 1979--March 31, 1979 Page: 11 of 16
This report is part of the collection entitled: Office of Scientific & Technical Information Technical Reports and was provided to Digital Library by the UNT Libraries Government Documents Department.
The following text was automatically extracted from the image on this page using optical character recognition software:
2.5 Results and Future Plans
The study of the core with depleted uranium internal blanket
is nearly complete. As was mentioned earlier, due to the high -
critical enrichment requirements of the U-Pu system (8.5%) and
the low plutonium buildup rate in the internal blanket .( ~-2% per
year) not enough plutonium can be built in the internal blankets
to create a critical radial blanket after shuffling. Also, in
the U-Pu system moderation does not help, since the epithermal
U-Pu system requires a higher:!critical enrichment (due to the
lower n of fissile plutonium) than the fast U-Pu system.
However, transferring internal blankets to the radial blanket
increases the fraction of the power generated by the radial
blanket assemblies, which will result in a lower number of fuel
assemblies and a smaller core. To see this, refer to Table 1,
which shows-the fraction of power generated by various parts of
the core at the BOEC. The total power in MWth adds up to 1500
NWth generated by the upper half of the core (i.e., the total
power of the core is 3000 MWth, corresponding to 1200 MWe based
on a 0.4 thermal efficiency). Table 2 shows the same data for
the case where all the internal blanket assemblies have been
transferred to the three-row radial blanket after two years of
burnup. The same results for a four-row moderated blanket is
shown in Table 3.
Power Generated by Various Parts of the Reactor
at the BOEC
Power (MWth) Percent
Core 1366.43 91.09
Internal Blankets 99.20 6.61
Axial Blankets 24.41 1.62
Radial Blankets 9.95 0.68
NOTE: Radial blanket is fresh (depleted uranium); subsequent
comparisons will also be made with radial blankets having equilibrium
Here’s what’s next.
This report can be searched. Note: Results may vary based on the legibility of text within the document.
Tools / Downloads
Get a copy of this page or view the extracted text.
Citing and Sharing
Basic information for referencing this web page. We also provide extended guidance on usage rights, references, copying or embedding.
Reference the current page of this Report.
Driscoll, M.J. MIT LMFBR blanket research project. Quarterly progress report, January 1, 1979--March 31, 1979, report, April 20, 1979; Cambridge, Massachusetts. (https://digital.library.unt.edu/ark:/67531/metadc1109556/m1/11/: accessed May 26, 2019), University of North Texas Libraries, Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.