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Posts Tagged ‘Radioactive’

Radioactive cesium found in urine samples from infants – Fukushima


July 3, 2012

A small amount of radioactive cesium was found in the urine samples from 141 infants and young children living in Fukushima Prefecture, where the crippled nuclear power plant is located, among 2,022 of those surveyed, a Japanese research group has said. Three urine samples contained more than 10 becquerels of cesium per kilogram, including a case with 17.5 becquerels. Ten becquerels or less of cesium was found in the samples of the other 138, the Yokohama-based Isotope Research Institute said yesterday. The urine samples also contained about an average 64 becquerels of radioactive potassium. “The level of cesium is lower than that of potassium, and it definitely has no effect on the human body,” said Hideaki Karaki, honorary professor of food safety at the University of Tokyo. “But we still need to know how cesium was taken into those infants’ bodies.” The research institute said those children with over 10 becquerels of cesium were eating home-grown vegetables. The survey, conducted from last November to January, covered infants and children up to age 7.  According to Fukushima Prefecture, the cesium testing covered the largest number of citizens since the Fukushima Daiichi nuclear plant was hit by a massive earthquake and tsunami in March 2011

Source: http://hisz.rsoe.hu/alertmap/site/?pageid=event_desc&edis_id=ED-20120702-35629-JPN

Tokyo Soil So Contaminated with Radiation it Would be Considered Nuclear Waste in US


Thursday, 24 May 2012

 

‘Radioactive fallout from the Fukushima Daiichi nuclear disaster continues to show up at dangerously high levels in the city of Tokyo, which is located roughly 200 miles from the actual disaster site. According to an analysis of five random soil samples recently taken by nuclear expert Arnie Gundersen, the soil around Tokyo is so contaminated with Fukushima radiation that it would be considered nuclear waste here in the U.S.

During a recent trip to Tokyo, Gundersen collected soil samples from a sidewalk, a children’s playground, a rooftop, a patch of moss by the side of a road, and the lawn of a judicial building. After sending those samples in for testing, it was revealed that each one had high levels of radioactive cesium-134 (CS134) and cesium-137 (CS137), while three of the samples contained high levels of cobalt-60 (CO60). One of the samples also tested positive for uranium-235 (U235).’

Read more: Tokyo Soil So Contaminated with Radiation it Would be Considered Nuclear Waste in US

Scientists bend gamma rays, could neuter radioactive waste


By posted May 10th 2012 5:54AM

 

 

 

Image

Bending most light is easy; bending it in gamma ray form, however, has often been deemed impossible given how hard it is for electrons to react to the extreme frequencies. University of Munich scientist Dietrich Habs and his Institut Laue-Langevin teammate Michael Jentschel have proven that assumption wrong: an experiment in blasting a silicon prism has shown that gamma rays will refract just slightly through the right material. If a lens is made out of a large-atom substance like gold to bend the rays further, the researchers envision focused beams of energy that could either detect radioactive material or even make it inert by wiping off neutrons and protons. In theory, it could turn a nuclear power plant’s waste harmless. A practical use of the technology is still some distance off — but that it’s even within sight at all just feels like a breakthrough.

 

Fukushima Still Spewing Massive Radiation Plumes; America in ‘Huge Trouble,’ Says Nuclear Expert


Tuesday, 01 May 2012 12:08

 

‘During a recent Congressional delegation trip to Japan, Oregon Senator Ron Wyden witnessed with his own eyes the horrific aftermath of the Fukushima Daiichi nuclear disaster, which we have heard very little about from the media in recent months. The damage situation was apparently so severe, according to his account, that he has now written a letter to Ichiro Fujisaki, Ambassador of Japan, petitioning for more to be done, and offering any additional support and assistance that might help contain and resolve the situation as quickly as possible.

The letter, which many experts see as the ominous writing on the wall for the grave severity of the circumstances, offers a disturbing glimpse into what is really going on across the Pacific Ocean that the mainstream media is apparently ignoring. While referencing the fact that all four of the affected reactors are still “badly damaged,” Sen. Wyden seems to hint in his letter that Reactor 4, which has reportedly been on the verge of collapse for many months now, could be nearing catastrophic implosion.’

Read more: Fukushima Still Spewing Massive Radiation Plumes; America in ‘Huge Trouble,’ Says Nuclear Expert

http://www.davidicke.com/headlines/

 

A Visual Tour of the Fuel Pools of Fukushima


 http://www.washingtonsblog.com/2012/04/a-visual-tour-of-the-fuel-pools-of-fukushima.html

Do You Know What the Fuel Pools Actually Look Like?

 

You already know that Fukushima’s fuel pool number 4 may be the single greatest threat, but that pool number 3 is very dangerous as well.

You’ve heard that unit 3′s fuel pool contains less radioactive material than unit 4 … but still a tremendous amount of radiation. Scientific American reported last year:

The pools at each reactor are thought to have contained the following amounts of spent fuel, according to The Mainichi Daily News:

• Reactor No. 1: 50 tons of nuclear fuel
• Reactor No. 2: 81 tons
• Reactor No. 3: 88 tons
• Reactor No. 4: 135 tons
• Reactor No. 5: 142 tons
• Reactor No. 6: 151 tons
• Also, a separate ground-level fuel pool contains 1,097 tons of fuel; and some 70 tons of nuclear materials are kept on the grounds in dry storage.

You’ve learned that unit 3′s reactor was the only one at Fukushima which burned plutonium. As Japan Times notes:

Reactor 3 … uses highly dangerous mixed oxide fuel, Tokyo Electric has reported.

***

No. 3 reactor is the only one at the crippled power station that was powered by the plutonium-uranium MOX

You’ve gotten the fact that – if the water drains out for any reason – it will cause a fire in the fuel rods, as the zirconium metal jacket on the outside of the fuel rods could very well catch fire within hours or days after being exposed to air. See this, this, this and this. (And that even a large solar flare could knock out the water-circulation systemsfor the pools.)

You’ve listened to experts say that – unless the rods are removed from the fuel pools before a major earthquake strikes (using special equipment which keeps the rods submerged in water the whole time) – they will likely catch fire and release huge amounts of radioactivity. See this and this – starting at 4 minutes into the video.

You’ve read that – after reviewing photos from several different angles – the Nuclear Regulatory Commission’s initial impressions were that spent fuel pool number 3 might not be there at all, and that nuclear engineer Arnie Gundersen said a couple of days ago:

Unit 3 is worse [than No. 4]. It’s mechanically its rubble, the pool is rubble. It’s got less fuel in it. It faces the same problem. Structurally the pool has been dramatically weakened. And, god nobody has even gotten near it yet.

And you may caught the recent headline that a 35-ton machine fell into spent fuel pool 3. As Kyodo News reports:

The operator of the crippled Fukushima Daiichi nuclear power plant on Friday found that a 35-ton machine had dropped inside the spent fuel pool of the No. 3 unit, possibly because of a hydrogen explosion that occurred in the early stage of plant’s nuclear accident last year.

Tokyo Electric Power Co., commonly known as TEPCO, reported the finding after placing a camera inside the water-filled pool the same day to prepare for removing, as part of the decommissioning process, the nuclear fuel stored there.

One photo showed part of the machine, originally located above the pool and used to insert and remove fuel, appeared to have dropped onto the nuclear fuel storage racks.

But – until you see pictures – it is hard to get a sense of what all this means.

Here’s a picture just released by Tepco of the giant machine in the fuel pool :

AJ201204140043M A Visual Tour of the Fuel Pools of Fukushima

And another new Tepco photo showing other tangled wreckage inside the pool:

AJ201204140044M A Visual Tour of the Fuel Pools of Fukushima

The following graphics from Ashai news show how the crane is normally used to move spent fuel rods in and out of the pool. Here’s the crane bringing in a special container to hold the rods:

 A Visual Tour of the Fuel Pools of Fukushima

Loading spent fuel rods into the container:

 A Visual Tour of the Fuel Pools of Fukushima

The crane then lifts the rod-carrying container up:

 A Visual Tour of the Fuel Pools of Fukushima

And then away from the pool:

 A Visual Tour of the Fuel Pools of Fukushima

Keep in mind that the machine which fell into pool number 3 was part of the crane “used to insert and remove fuel”, and so now there is no easy way to remove the fuel from the fuel pool. And the crane at unit 4 is also broken:

 A Visual Tour of the Fuel Pools of Fukushima

Still confused?

Let’s look at some more pictures …

Before the Quake

Here is where the fuel pools are located in the Fukushima reactors:

 Japan Fukushima Spent Fuel A Visual Tour of the Fuel Pools of Fukushima
Here are pictures Unit 3′s fuel pool before the earthquake, and the fuel pool crane:

R3 crane A Visual Tour of the Fuel Pools of Fukushima

R3crane A Visual Tour of the Fuel Pools of Fukushima

crane2 A Visual Tour of the Fuel Pools of Fukushima

R3 insidebefore A Visual Tour of the Fuel Pools of Fukushima

 A Visual Tour of the Fuel Pools of Fukushima

 A Visual Tour of the Fuel Pools of Fukushima

R3sfp A Visual Tour of the Fuel Pools of Fukushima

This shot is during repairs at reactor 4 before the earthquake – but gives a sense of scale:

article 1367524 0B3B48D800000578 106 472x754 A Visual Tour of the Fuel Pools of Fukushima

After the Quake

Here is the green fuel pool crane at unit 4 after the earthquake:

pict7 A Visual Tour of the Fuel Pools of Fukushima

pict32 A Visual Tour of the Fuel Pools of Fukushima

pict21 A Visual Tour of the Fuel Pools of Fukushima

pict32 A Visual Tour of the Fuel Pools of Fukushima

The view from above the crane at fuel pool 4:

R4 sfp4 A Visual Tour of the Fuel Pools of Fukushima

 A Visual Tour of the Fuel Pools of Fukushima

 A Visual Tour of the Fuel Pools of Fukushima

 A Visual Tour of the Fuel Pools of Fukushima

(“SFP” in these photos refers to the spent fuel pool.)

Former fuel pool nuclear engineer Arnie Gundersen notes that – for at least some period after the earthquake – the fuel pool had insufficient water, and the nuclear rods were sticking out into the air:

Here is water later being poured into fuel pool 4:

9 A Visual Tour of the Fuel Pools of Fukushima

Reactor 3 is a mess:

 A Visual Tour of the Fuel Pools of FukushimaLARGE3 4 A Visual Tour of the Fuel Pools of Fukushima

HouseofOust notes of this picture:

Oval is the reactor well location. Lines on the left side of the image outline the crane that seems to have fallen over or been crushed. Spent fuel pool outlined in the foreground.

LARGE3 4b A Visual Tour of the Fuel Pools of Fukushima

And of this picture:

Perspective lines are drawn to show where the deck should be and how much is gone. A circle shows the beam apex to appoximate the reactor well. Spent fuel pool is again seen off to the right and outlined. Marked structure in the foreground is the end of the refueling crane.

LARGE3 5b A Visual Tour of the Fuel Pools of Fukushima

Now can you see what’s going on?

Over 20 Radioactive Hotspots Found in Tokyo … Despite Government and Media Attempt to Cover Up Spread of Radiation

October 19, 2011 Leave a comment

Wednesday, 19 October 2011 06:42

‘Reports that substantial amounts of cesium had accumulated as far away as Tokyo have raised new concerns about how far the contamination had spread, possibly settling in areas where the government has not even considered looking.

The government’s failure to act quickly, a growing chorus of scientists say, may be exposing many more people than originally believed to potentially harmful radiation. It is also part of a pattern: Japan’s leaders have continually insisted that the fallout from Fukushima will not spread far, or pose a health threat to residents, or contaminate the food chain. And officials have repeatedly been proved wrong by independent experts and citizens’ groups that conduct testing on their own.

“Radioactive substances are entering people’s bodies from the air, from the food. It’s everywhere,” said Kiyoshi Toda, a radiation expert at Nagasaki University’s faculty of environmental studies and a medical doctor. “But the government doesn’t even try to inform the public how much radiation they’re exposed to.”’

Read more: Over 20 Radioactive Hotspots Found in Tokyo … Despite Government and Media Attempt to Cover Up Spread of Radiation

 

North Carolina Nuclear Facility with Superheated Uranium Leaking Ten Gallons of Radioactive Cooling Water per Hour


Sunday, 10 July 2011 09:30

‘A nuclear research reactor at North Carolina State University (NCSU) in Raleigh, NC, was recently shut down after it was discovered that the plant has been leaking about ten gallons of nuclear cooling water per hour for at least the past week. Officials from the university, however, claim that the leak, which stems from the 15,000 gallons of water used to cool the superheated uranium reactor core, poses “no public health threat.”‘

Read more: North Carolina Nuclear Facility with Superheated Uranium Leaking Ten Gallons of Radioactive Cooling Water per Hour

davidicke.com/headlines

Categories: Environment Tags: , , , ,

Cruel Medical Radiation


Thursday, 07 July 2011 09:31

‘With radiation levels increasing accross the entire northern hemisphere the radiation your doctor uses takes on a new dangerous meaning. Physicians know that radiation is dangerous but they cannot help themselves, they love to use radiation both in testing and in treatment. Modifying physician behavior is hard thing to do but we have to do it and do it now in the radiation departments. How doctors and hospitals relate to and use radiation in both diagnosis and treatment of disease needs to come under full review and in most cases be brought to a halt.’

Read more: Cruel Medical Radiation

davidicke.com/headlines