Sand Burial Accident Scenario

The results from these runs can be found in table 5-3 

These results show that the reactor is substantially subcritical in all of these accident scenarios. The most problematic of the accident cases is the dry sand immersion case, which is also the least credible of the accident scenarios. The likelihood of a reactor 

Significant cost savings in security and development can be had if the reactor uses a Category-Ill level of SNM rather than Category I. Security for facilities with highly enriched fuel on site can cost roughly 30 M per year and the slow down in experimental operations caused by this security can cause an additional cost. The first option requires a well-moderated reactor the second requires a somewhat moderated reactor. The first option may end up being very limited in power and lifetime because of fuel bumup the second option has more latitude for power and bumup. 

A Category-Ill space reactor was not designed for this study. But consideration was made for a Category-Ill reactor that would simulate the behavior of a Category-I space reactor. The intent would be to make preliminary nuclear-heated ground tests less 

The changeover to a thermal system requires the use of a high temperature moderator. 

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