Sunday morning update: Fukushima Daiichi

As of 5:55 AM Eastern time Sunday, here are the updates...

TEPCO has reduced the amount of water being injected to the reactor cores at No. 1 and No. 2 plants since, as it says, "temperature and pressure seem to have atsbilized on these plants." We don't have adjusted flow rate figures yet, but probably will. This surely is tied to the effort to reduce water flow into the ocean.

Now a word about that... if we want to begin to assign fault for some very specific details of the accident, we might want to blame some of the serious release of radioactivity to the environment to the concrete having cracked outside the plant. However, that would be very easy and probably wrong. Radioactive water should never have gotten out there in the first place--- the cable pits by the intake screens are not a part of the "lines of defense" considered in containment of fission products. While it's true that this has helped make the accident overall somewhat worse, it's important to note that the real problem is far upstream in the flow of that contaminated water. We can't expect that area to hold as a containment barrier.

Speaking of which... the attempt to seal the crack with concrete (No. 2 plant, by the way is the culprit here) failed because the flow rate of water into the pit was enough to prevent the concrete from curing. A synthetic polymer will be tried today.

The core water injection pumps are now receiving offsite power. The press release isn't clear as to whether these are the same temporary pumps used prior to this with temporary diesel generators, or whether these are pumps internal to the plants.

Two barges worth of water have now been brought on site, supplied by the US Navy.

Lights are now on in some parts of some of the auxiliary buildings on site.

Now to the worst news of the day. There have been reports off and on, since March 11 and not necessarily repeated in every press release, that two workers were missing from the site -- they had been there prior to the accident but were not mustered with the crews on-site afterward. Their bodies have now been found in an electrical equipment panel space in the No. 4 plant turbine building. Press releases are saying that these are the first reported deaths on site, but this author recalls that one person was reported killed in a crane operating cab on the exhaust stack of one of the plants on the very first day, so at this point it appears that the death toll on site of TEPCO employees is now actually three.

5:55 AM Eastern Sunday 4/3
ATOMIC POWER REVIEW

UPDATE 6:30 AM: It appears TEPCO is having trouble getting the polymer to plug the cable ways, and is adding sawdust and shredded newspaper. Further, it now looks like there are TWO separate release paths; the path that the water is getting to the cable pits through encloses only the cable runs and is not a cross connection with the pipe trenches.