Skip to comments.Meltdown occurred at Fukushima No. 1 reactor 16 hrs after March 11 quake
Posted on 05/15/2011 6:47:13 AM PDT by TigerLikesRooster
Meltdown occurred at Fukushima No. 1 reactor 16 hrs after March 11 quake
TOKYO, May 15, Kyodo
A nuclear fuel meltdown at the No. 1 reactor of the crisis-hit Fukushima Daiichi power plant is believed to have occurred around 16 hours after the March 11 quake and tsunami crippled the complex in northeastern Japan, Tokyo Electric Power Co. said Sunday.
(Excerpt) Read more at english.kyodonews.jp ...
Thanks for the massive data dump. This has totally fallen off the radar in the US.
check out this statement
“Explosive sound and white smoke were confirmed after the big quake
occurred at 3:36 pm on March 12. It was assumed to be hydrogen explosion.”
So the fuel melts down BEFORE the explosion and BEFORE the vents were opened....
Notice they say “It was assumed”
Japan had a massive amount of radiation thrown into the air.
Also notice they are now pumping in water from two different areas and they are injecting boric acid into #3.
temperature is rising in Reactor 3 and they can’t keep the water levels up.
This is the one with MOX fuel.
Come to your own conclusions...
We may well have 80km(50 mile) “No Entry Zone” eventually.
I pray that it doesn’t eventually extend down to us :/
Also for the families that are still stuck up there..
Check this out..I can’t believe anyone can read this and come on these threads and say with a straight face that the last paragraph sounds accurate...
Tokyo Electric Power Company, the operator of the Fukushima Daiichi nuclear power plant, says most of the fuel rods in the No.1 reactor had dropped to the bottom of the pressure vessel within 16 hours of the earthquake on March 11th.
The utility revealed its study on the subject on Sunday.
TEPCO said it analyzed the data and calculated a timeline for the developments in the No. 1 reactor on the assumption that the reactor lost its cooling system as soon as it was hit by the tsunami.
The firm said that within about 3 hours after the reactor automatically shut down, the cooling water had evaporated to a level at the top of the rods.
In the next hour and a half, parts of the fuel rods are believed to have begun melting.
The temperature of the fuel rods is believed to have reached 2,800 degrees Celsius at this stage, and the meltdown advanced rapidly.
Almost of all the fuel rods melted and dropped to the bottom of the pressure vessel by 6:50 am on March 12th.
TEPCO said the temperature dropped after water was poured into the reactor starting at 5:50 am on the same day.
The firm says the melted rods created small holes on the bottom of the vessel, but that no major problems are developing there. It believes that the amount of radioactive substances that could spread from the reactor will be limited.
Sunday, May 15, 2011 23:29 +0900 (JST)-———————
BTW, WHY IS THIS JUST NOW COMING OUT???????
(many of us here already suspected this to be the case)
Highly Radioactive Substances Detected in Tokyo
Moving on to the latest developments in Japan’s ongoing nuclear crisis highly radioactive substances were detected in parts of Tokyo. Japan’s Asahi Shimbun reports about 3200 and nearly 2-thousand becquerels of radioactive cesium per kilogram were
In many cases, people withhold information in the hope that they can buy the time to get things taken care of and back to normal. They may sense that it won’t be the case and this thing will continue to create problem or may even get worse as time passes by. Better to shed part of liability now via delayed leak as people find it out sooner or later.
Withholding them all to the end would be catastrophic to those in charge.
A rad tech posted an earlier picture of 2 Japanese workers in the exclusion zone wearing their breathing apparatus on OVER their protective clothing. He said that error could have serious consequences - even including loss of life - depending on where they were working (degree of contamination that could be inhaled). The breathing mask, and the black straps that secure it MUST be placed under the white fabric hood. The rad tech said that the pic he analyzed (two workers in a vehicle) probably meant the workers were not properly trained - possibly recent additions from different fields. BOTH MEN in the picture you posted seem to have made this mistake. The mask needs to lie pefectly flush against the skin to prevent inhalation of fumes...and no one told these men? And TEPCO allowed photos???
Rummy - where did you get the photos of the men wearing kitchen gloves? Any chance that the source used a file photo taken from an earlier - less toxic time (maybe recent photos weren’t available)? *fingers crossed* I know...long shot...but it’s hard to look at otherwise!
It is statistically probable that all the Fuel Pellets have melted into a molten core within reactor #1. Could have occurred on day 1 or any other day for a few weeks afterward. Odds now favor it happened very close to day 1. During TMI the molten core section caused a breakout from the RPV that was contained within a control rod housing box assembly. There was not enough force to break out completely. We have to assume that there was enough force this time. Also, the presence of 1,000 of tons of highly radioactive water that was supposed to be running within a closed loop internal cooling system, does not favor 100 % containment.
Above image from Wikipedia and shows the corium flow out from the Chernobyl reactor. That corium at Fukushima is probably flowing to the same area where the water is pooling.
I don’t think so. Look at how they code their pictures. You can go here and do a sample.
I found that picture while surfing on the net but I haven’t figured out how to find it on Tepco’s site by going to the above link
The rad tech blogger Wormme (Wormme.com) has that picture you posted featured with the following text:
How not to wear a respirator, Take 2.
Posted on May 15, 2011 by wormme
The gloves arent necessarily a problem if theyre taped to an inner set of PPEs. Having the hood between yourself and your respirators straps obviously is.
I dont know what their problem is. But, assuming theyre working in highly contaminated and airborne areas, some of these folks are getting facial contaminations and internal deposits of radioactivity. Here, its a rare and industry-alarming event.
Ah a tiny tiny micro spot of good news re the photo. Someone pointed out in the Wormme comments that the photo is captioned to be training at the Fukushima Danii facility - but they are training them in unsafer protocols by having the mask on the outside.
Unfortunately, someone else posted a picture of workers at the Fukushima Daiichi wearing ‘rebreathers’ wrong (face mask straps on the outside)
To which the Wormme blogger responded:
I just dont know what to say at this point. If theyre doing that in airborne areas theyre going to get uptakes and internal dose.
Recalling from my past Rad training (both private commericial and federal DOE facility) the minimum was 1 pair white coveralls, 1 pair canvas boot liners, 1 pair rubber gloves, 1 pair rubber boots, 1 head cover, and 1 pair canvas gloves. Respiratory requirements were per the RAD work order.
If water was involved there would be a rain suit of some sorts...
Since I can’t find the picture from the Press page I really don’t know what to think.
If that was contaminated water..they were using a spray nozzle and causing it to be airborne.
I hope it was just a training picture. But it seems odd to have a training picture within those sequence of numbers on the URL.