The explosion were hydrogen ignitions that caused damage but much of that in now back under control.
Please look at the following chart that breaks down each component of each unit. This has been update often in the last few days and each version is time stamped at the top. It is produced by the Japan Atomic Industrial Forum
http://www.jaif.or.jp/english/news_images/pdf/ENGNEWS01_1300368041P.pdf
Reactor #1 Containment Vessel is not damaged, pressure is stable. Water injection is ongoing. The unit is scrapped no doubt, but I would not use the term "in Peril". Maybe I am arguing of semantics which is useless. I see that unit as stable with lots of work to continue to keep it that way.
#2 & #3 likely have damaged the containment vessel or at least the lower ring. But both I view as in stable condition since they were finally able to start the Sea Water injection in #3.
#4, #5 & #6 have no issues with the containment vessel. #4 spent fuel pool has had a lot of problems and has released radiation in the steam and hydrogen explosion. But other reports now show this to be in stable water temperature.
The U.S. government didn’t ‘order’ Americans out of Japan, no they worded it as ‘voluntary evacuations’, so as to not upset the Japanese people.
I think politics play a large role in this. Too many panicked people and this helps give them the ability to get out, because they want out. The immediate area needed evacuated. 20, 30 50 or 80 kilometers becomes arguing points and how much safety versus the problems created by evacuation. I've been around for hurricane evacuations. It cause huge problems and the likelihood is people will actually die from the evacuation order because of panic and stupidity.
Downplaying even minute amounts of the danger of getting a cancer while telling people no harm can come to you, is criminal in itself.
There has been ridiculous panic that can cause harm as well. People in the US Midwest and East coast paying several orders of magnitude above reasonable price to buy iodine tablets and dehydrated food. There exist real possibility of items like iodine tablets going in short supply if a major radiation release happened and a few 100,000 Japanese truly need them.
So I think, Nuclear will continue to be used.
I fear, because of unreasonable levels of panic in the general population and a media that feeds that, we will see Nuclear power greatly curtailed and overly increased in expense if used. No different than after 3 Mile Island, which actually did a good job of containing a bad situation (technically, not politically).
Please explain how contaminated sea water in the hydrogen explosion now has radiation in it as well, since you are posting so much ‘info’...
So you asked ME what I think, so you could go through it and pick on it line by line. Just as I had expected.
So you believe what you want, attack others with incomplete ‘reports’, and think you are swaying anyone???