Abstract
The fast reactor group constant set JFS-3-J3.2 based on the evaluated nuclear data library JENDL-3.2 has been widely used in fast reactor analysis. However, it was recently found that there were errors in the process of making the group constant and they were revised. This set is called JFS-3-J3.2R. In this report, effects of the errors on nuclear characteristics were evaluated by a comparison with a new reactor group constant set, JFS-3-J3.2R.This report shows that the errors mainly affect removal cross section and distort neutron spectrum. As a result nuclear characteristics, such as sample Doppler reactivity and reaction rate in a blanket region, are significantly affected. However, it is also shown that other characteristics, such as criticality and sodium void reactivity, are not affected because the effects of errors are canceled out as a total integrated result.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
