After a brief venture over into the medical/RHP side of things, I find myself drawn back into nuclear engineering. Glad it happened before I got too deep into something else! Ive just started working on my MS, and Im trying to find some sort of direction for myself. Anyways, one subset of nuclear engineering that really captures my interest is criticality safety. I am somewhat under the impression that there isnt a whole lot of new things happening in this area, and its all pretty well known. Is this assumption correct? Or are there still interesting challenges facing the crit safety community?