US Nuclear Regulatory Commission
In news coverage of the unfolding disaster at Japan’s Fukushima Daiichi nuclear plant, two themes have been particularly prominent. One is the paramount problem of potentially lethal radiation being released from the stricken reactors to a large area of Japan and beyond. Even now, new reports of radiation continue to surface. The second—with implications for nuclear facilities around the world—is the vulnerable design of the plant’s six reactors and their storage pools for nuclear waste, all of which were at risk of losing their cooling water and could have caught fire in the days after the earthquake. Often missing in this discussion, however, is an analysis of the particular kind of radiation that has been detected and what it may reveal about the accident.