Originally posted by uccemebug The radiation levels at the site are
35,000 x what it takes to cause cancer?
Yeah, though those numbers have varied a lot, and there are a lot of figures being thrown around. There's a lot of radioactive material and stuff variously being produced, built up (less so with containment buildings blowing) and vented/dispersed, but some of these figures are local to various plant buildings, other areas, and sometimes they're spikes in radiation levels, so it's all a bit confusing.
Fortunately, the winds have mostly continued to blow most of that stuff offshore. (This'll be why the Navy was getting some elevated readings and moved away from that area,) ... Tokyo got a bit of it for a while, though, and, it's probably going to be some time before the real environmental damage gets added up/health hazards are charted.
Those numbers are really going to vary as things progress: there's a lot of variables (including a pretty short half-life of some of the particles that can be released when certain things happen. Which means these things can give of a high reading for a relatively short time, (and thus over a relatively small area.) So, you can expect that. You sure wouldn't want to be standing where it's 'hot' at those times, though.
If I've managed to get anything like an accurate picture, only the workers dealing with the plants are having real big health risks right now and only a few would have been risking radiation sickness, (assuming they weren't protected, which they'll generally in fact be.)
The surrounding countryside may be getting some health risks own the line, as things stand, and it could get worse. (Outside the areas just evacuated, they've been having people stay indoors and seal up: this is probably to reduce the chance anyone inhales or ingests any of those shorter-lived particles or anything, particularly if the wind changes again. )
Tokyo's measured levels (I don't know of what type) went up to twenty times 'normal' for a brief time, but really not to 'unsafe' or anything. Hopefully, there won't be too much danger, there, if things go well.
If they can start getting these things cooled down, they're in better shape all around, things like that spent fuel pool fire are really dangerous.
Update: about 5:30: Whoof, I dunno, here. Still looking pretty dodgy for the region near the reactor, at least: one constant through this seems to be we're not getting very current or consistent information. Very touchy all around for that whole plant site, it seems. I keep wondering if they could use some more fire-boats for pumps.