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Water Cooler – Tech Issues Update

5:32 pm in Uncategorized by Bill Egnor

Component-side RAM and NAND wires

Component-side RAM and NAND wires by scanlime

 

Hiya Firedogs! First off I want to thank everyone who has been so understanding with us as we try to work out the kinks in our servers. As most of you know we have had a couple of problems over the last two weeks.

The first is that the redirections problem. When people (including those of us who run the site) click on one post it redirects them somewhere else. This problem has been really hard to run down as it is seems to be attached to the individual. I can get into posts that Phoenix Woman can’t and vice versa.

We also have had a very scary problem where all of the users content disappears. All the comments, all the diaries, the whole kit and caboodle gone. Poof! Well I am very happy to announce that we have not only fixed that problem, we have also recovered all the data!

So, if you are one of the folks who had this happen to you, you now have your history back for good or ill. We were able to run this down in part from the information that you all have been providing. And it has us on the track (we think) of figuring out what is causing the random redirects.

I can’t give you an estimate, just yet, of when we will have this problem resolved, but we have made progress and I wanted to share that progress with all of you. Once we know that we have solved this issue, I will come back and let you all know.

Again, we really appreciate all the help and patients you’ve all shown. We recognize that this is a really frustrating problem, for its randomness and its persistence but so far no one has shown up with pitch forks and torches, for which we are grateful. This is still our number one priority, but there is light at the end of the tunnel, and it is not a train!

So, what is on your minds tonight Firedogs? The floor is yours.

Japan Nuclear Watch: Monday Noon Update – 3 Reactors In Partial Meltdown

8:25 am in Uncategorized by Bill Egnor

This cutaway diagram shows the central reactor vessel and thick concrete containment in a typical boiling water reactor of the same era as Fukushima Daiichi 1 (image: www.world-nuclear-news.org)

Things continue to develop at the Daiichi and Daini nuclear power stations in Japan today. As you have already heard, a second reactor building exploded at Daiichi, it was the Unit 3 which had been experiencing the same problems as Unit 1, which also exploded.

What is believed to have happened is that hydrogen gas which was released along with the steam to reduce the pressure in the reactor vessel built up in the generation building and then a random spark ignited it. The building is seen to have the same kinds of damage that the Unit 1 building had.

Additionally Unit 2 has been reported to have exposed the rods and is in the process of at least a partial melt down at this time. What does this mean? It is likely that they will be experiencing the same pressure and hydrogen problems that Units 1 and 3 have had, with a similar danger of hydrogen explosion.

There has been a lot of talk that the reactor vessel (the actual structure of the reactor) might have been ruptured by these explosions because of the detection of Cesium (a fission by product). The main reason I find this unlikely at this time is that if the reactor vessel had failed two things would have happened.

The first is that the pressure within the vessel would have fallen to normal atmospheric pressure, this would have flashed most of the water in the vessel to steam by lowering the boiling point of that water. The second is that there would have been a massive increase in the amount of radiation detected.

While there have been reports of radiation detected at long distances (60 miles) we have to remember that venting of radioactive steam has been going on for three days now and that it could have traveled. We also are not being told how high this increase in radioactivity is. That is an important metric as very small increases can be detected.

We are now getting reports through the BBC that fuel rods in all three of these reactors are melting. The issue here is the way that they have been adding sea water to the reactors. It is being done through a system of fire hoses. They are using diesel powered pumps and the New York Times quotes and official as saying:

“The pump ran out of fuel,” Mr. Edano said, “and the process of inserting water took longer than expected, so the fuel rods were likely exposed from the water for a while.”

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