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Cesium filters got too radioactive in just 5 hours ... Very deadly stuff. That contaminated cooling water may be more radioactive then estimated by a factor of about 144

Your report certainly sounded like things were very bad. And you had a fact -- they shut down after 5 hours because their cesium filter saturated.

However, you then again leaped into rampant speculation. We'll know why the filters filled up in a few days, when the experts finish their analysis. But as in so many other cases of reports from the plant, people just jump to conclusions, insist that whatever they are seeing proves what they speculated about before, and continue to spread unwarranted fear and panic.

So, exactly how hot is this filter problem? Here's from the news story:

NHK, the national broadcaster, said that the filters had accumulated four millisieverts of radioactive material per hour, about as much as was expected to be collected in a month.

4 milliseiverts per hour.

That reading was from the surface of the outer metal vessel housing the filtration unit. This means that the reading off the filter mechanism itself must be much higher. The issue was also how quickly that reading was reached. It reached an established point where replacing the filter was deemed safe, obviously. Also probably was related to how many filters they have manufactured. A US company makes the filter and they have ramped up staff. Why are we not privy to all the details about a US based company that is coming to the aid of Japan ? Is that not a valid news story ?

So what you see as rampant speculation is actually absolutely valid speculation.

Now about the only alternative explanation that I have seen that makes sense is that the metal vessel was being radiated by nearby transportation piping of the contaminated water. In both scenarios however much higher radioactivity levels within that water is a possibility and most likely.