It looks like you're using an Ad Blocker.
Please white-list or disable AboveTopSecret.com in your ad-blocking tool.
Some features of ATS will be disabled while you continue to use an ad-blocker.
Originally posted by Purplechive
Krypton-85 and Xenon-131m
I'll continue to do more research but if any of you brainiacs out there can help me comprehend and digest why TEPCO went through the effort to set up this gas sampling instrument to collect radioactive materials INSIDE unit 2...sure would appreciate your insight!! See link below.
- Purple Chive
The detection of Kr-85 (if the results are correct) is interesting. As far as I am aware, Kr-85 is not produced in the long decay chains, so all of it has been around ever since the fissions stopped. If it is still found in the containment, my first impression is that either
(a) the containment has somehow been able to contain the noble gas Kr-85 ever since the fuel failures occurred in spite of the leaks and the suspected hydrogen explosion early on during the accident
(b) Kr-85 has been released to the containment atmosphere more recently, which means that some fuel rod claddings have lost their integrity only recently
(c) corium is still outgassing
noble gas releases from fuel would have reached 100 % before it even starts to melt. Therefore, the only way I see new release of Kr possible is that part of the fuel would have not overheated to 100 % release levels (=would possible have maintained their cladding integrity and would continue to slowly release noble gases). This is exactly the point I found interesting about the results: to me it seems that either the containment is able to contain noble gases for a long period of time or part of the core must have remained unmelted.
Originally posted by Human0815
Rice from town near Tokyo is radiation-free, tests showSource
Reuters) - Samples of rice grown in a town near Tokyo showed no radioactive materials when tested, officials said on Wednesday, a relief for farmers preparing to ship Japan's traditional food staple.
Concerns over food safety have grown after radiation from the smashed Fukushima Daiichi power plant has leaked across northern and eastern Japan since March, the world's worst nuclear crisis in 25 years.
Some local authorities are testing their rice to see if it contains too much cesium. Rice grown in the town of Tako in Chiba prefecture, 240 km (150 miles) southwest of Fukushima, was tested this week to determine if more stringent checks are needed [color=limegreen]after the town measured high radiation in the ground, local officials said.
"The results are a relief, but we consider it as only part of the procedure to determine safety in rice consumption," said Shigetoshi Abe, a Chiba official in charge of food safety.
Day 153, maybe we pass the first %?
Radioactive cesium levels exceeding [color=limegreen]5,000 becquerels per kilogram have been detected in farmland close to the nuclear plant and farmers in these areas will likely be barred from growing rice this season, government sources said.
The Fukushima prefectural government announced Wednesday that rice paddies in Iitatemura have shown as much as 15,031 becquerels per kilogram of radioactive cesium. Part of Iitatemura is within 20 kilometers to 30 kilometers of the plant, where residents have been instructed to stay indoors.
Evacuation Frustrates Iitatemura Mayor
FUKUSHIMA--Norio Kanno, mayor of Iitatemura, Fukushima Prefecture, must evacuate his entire village by the end of the month under a government order due to radiation leaks from the crippled Fukushima No. 1 nuclear power plant.
Kanno: "They're going to suffer mentally, physically and economically, and their children's education will be put in jeopardy.
There's been a lot of thought put into protecting people's health from radiation, but the loss of stability in life caused by the evacuation hasn't been given enough consideration.
"Some experts have even said people face a higher cancer risk from smoking than radiation."
Tue Mar 15, 2011 3:03pm IST
REUTERS - Radiation levels in Chiba prefecture neighbouring Tokyo are now more than [color=limegreen]10 times above normal levels, Kyodo News reported on Tuesday.
The maximum level was based on studies that have shown brown rice absorbs one-tenth of the radioactive cesium in soil. Since [color=limegreen]the provisional guideline for radiation in rice is 500 becquerels per kilogram under the Food Sanitation Law, the government decided on a limit of 5,000 becquerels per kilogram.
"Demand for old crops which are free from radiation would be stable. But the new crop's January contract seems just overblown," a trader at a Tokyo-based commodity brokerage said.
Originally posted by qmantoo
Somehow, I think there needs to be an independent monitor for this kind of thing.
Nuclear commission erases children's exposure data.
Japan's nuclear watchdog has been found to have erased from its website, data on the results of thyroid checkups for children in Fukushima Prefecture.
The Nuclear Safety Commission had uploaded the test results carried out by the government in March. More than 1,000 children aged 15 or younger were checked to see whether radioactive substances are accumulating in their thyroid.
The results included information that showed a 4-year-old infant in Iwaki City was exposed to 35 millisieverts of radiation. This amount is not considered a health threat.
But the commission removed all the data earlier this month. It cited the possibility that individual children could be identified because detailed information such as the 4-year-old's address was included.
The deletion is drawing criticism as no other similar data is available on children's health. Children have greater risks of developing thyroid cancer.
Professor emeritus Hirotada Hirose of Tokyo Woman's Christian University says the commission cannot escape blame that it removed the data fearing a negative reaction to children's exposure. He said the move runs counter to providing accurate information to the public.
Nobody likes bad news Since World War II, the process of secrecy – the readiness to invoke "national security" - has been a pillar of the nuclear establishment…that establishment, acting on the false assumption that "secrets" can be hidden from the curious and knowledgeable, has successfully insisted that there are answers which cannot be given and even questions which cannot be asked.
The net effect is to stifle debate about the fundamental of nuclear policy.
Concerned citizens dare not ask certain questions, and many begin to feel that these matters which only a few initiated experts are entitled to discuss.
If the above sounds like a post-Fukushima statement, it is not. It was written by Howard Morland for the November 1979 issue of The Progressive magazine focusing on the hydrogen bomb as well as the risks of nuclear energy.
The US government - citing national security concerns - took the magazine to court in order to prevent the issue from being published, but ultimately relented during the appeals process when it became clear that the information
The Progressive wanted to publish was already public knowledge and that pursuing the ban might put the court in the position of deeming the Atomic Energy Act as counter to First Amendment rights (freedom of speech) and therefore unconstitutional in its use of prior restraint to censor the press.
But, of course, that's in the US, although a similar mechanism is at work in Japan, where a recently created task force aims to "cleanse" the media of reportage that casts an unfavourable light on the nuclear industry (they refer to this information as "inaccurate" or a result of "mischief."
Originally posted by qmantoo
I think maybe a re-group and re-focus is in order. We need a consolidation of important questions still not satisfactorily discussed or resolved and some measure (kind of marks out of 10) to say how important we think these outstanding issues really are.
That done, we can all pick a question that interests us and go off and search for some more information on it.
Originally posted by Aircooled
Another screen cap [July 25] tracing the strange discharge pumping