nuclear-news

The News That Matters about the Nuclear Industry

Pics from Fukushima robots not enough to devise fuel-removal plan for reactor 2: Tepco

n-fukushima-a-20170224-e1487859694242-870x564.jpg

Members of the media take in the No. 1 reactor at the Fukushima No. 1 power plant in Fukushima Prefecture on Thursday.

OKUMA, FUKUSHIMA PREF. – While a recent investigation found what may be melted nuclear fuel rods in reactor No. 2 containment vessel at the Fukushima No. 1 plant, that information isn’t nearly enough to devise an effective method for removing it, the chief of the plant told reporters during a media tour Thursday.

We put in cameras and robots and obtained valuable images, though they were partial . . . but it’s still unclear what is really going on there,” said Shunji Uchida, who became chief of the crippled plant last July. “We first need to know the situation of the debris.”

Last month, the utility inserted a 10.5-meter rod with a camera on its tip into a hole in the No. 2 reactor’s primary containment vessel and discovered black lumps sticking to the grating directly underneath the suspended pressure vessel, which holds the core.

Tepco claims it is still unsure whether the lumps are really melted fuel that burned through the bottom of the pressure vessel. Although it is still years away from actually trying to remove the fuel, Tepco, the government and related parties are planning to decide on a basic strategy this summer and go into more detail next year.

Uchida described last month’s surveillance operation as “just peeking.”

Engineers are playing with the idea of refilling the primary containment vessel with water during debris cleanup operations to reduce the intensity of the radiation, but since the PCV was probably damaged during the meltdown crisis in March 2011, the water that’s being pumped in 24/7 to keep the fuel cool is just leaking back out.

According to past analyses, some of the melted fuel rods penetrated the pressure vessel and fell into the containment vessel surrounding it after the March 11 quake and tsunami caused a station blackout at the plant, crippling all cooling functions.

http://www.japantimes.co.jp/news/2017/02/23/national/pics-fukushima-robots-not-enough-devise-fuel-removal-plan-reactor-2-tepco/#.WK8m0PL9KM9

February 24, 2017 Posted by | Fukushima 2017 | , , | Leave a comment

Dr. Caldicott on Fukushima: “Decommission or Cleaning Up? It’s Fantasy!”

This Week’s Featured Interview:

http://nuclearhotseat.com/2017/02/22/dr-caldicott-on-fukushima-at-6-decommission-or-cleaning-up-its-fantasy/

February 23, 2017 Posted by | Fukushima 2017 | , , , | Leave a comment

Fukushima: No End in Sight

no end in sight.jpg

 

KGO Radio: Host Pat Thurston recently interviewed Arnie Gundersen, chief engineer for Fairewinds Energy Education on KGO radio to discuss the latest challenging news from Japan about the Fukushima Daiichi atomic power reactor including the high levels of radiation emanating from the reactors, all the failed robotic expeditions, where we should go from here, as well as how ongoing radioactive releases from the Fukushima Daiichi site may be impacting the west coast of the United States.

 

BBC Newsday: BBC Radio interviewed nuclear engineer Arnie Gundersen to discuss TEPCO’s attempts to send a special robot into Fukushima Daiichi Reactor #2 in Japan to investigate the obstacles in the way of TEPCO’s progress determining the location and condition of the atomic fuel. Unfortunately even this specially designed robot failed in its attempt to clear the path for additional investigations as the nuclear radioactivity was so high, it shut down the robots before they could complete their mission.

Listen Here

 

Enviro News: The astronomical radiation readings at Fukushima Daiichi Reactor #2 of 530 Sv/hr complicate the already complex task of decommissioning the plant. These levels are so radioactive that a human would be dead within a minute of exposure and specially designed robots can only survive for about 2 hours. Fairewinds chief engineer Arnie Gundersen says that the best solution would be to entomb the reactors, similar to the sarcophagus entombing Chernobyl, for at least 100-years, otherwise the radiation level that workers would be exposed to is simply too dangerous.
Read the whole article here

 

 

Are the meltdowns at Fukushima Daiichi over? The answer is no. Made all the more prevalent a year out from it’s initial release by the recent robotic expeditions into Reactor #2 which gave us a clearer picture on just how deadly the radiation levels are, watch Chief Engineer and nuclear expert Arnie Gundersen inform viewers on what’s going on at the Japanese nuclear meltdown site, Fukushima Daiichi. As the Japanese government and utility owner Tokyo Electric Power Company push for the quick decommissioning and dismantling of this man-made disaster, the press and scientists need to ask, “Why is the Ukrainian government waiting at least 100 years to attempt to decommission Chernobyl, while the Japanese Government and TEPCO claim that Fukushima Daiichi will be decommissioned and dismantled during the next 30 years?”
Like so many big government + big business controversies, the answer has nothing to do with science, and everything to do with politics and money. To understand Fukushima Daiichi, you need to follow the money.

http://www.fairewinds.org/newsletter-archive//no-end-in-sight

February 23, 2017 Posted by | Fukushima 2017 | , , , , | Leave a comment

Fukushima nuclear disaster evacuees ‘pressured’ to return to contaminated homes, says Greenpeace

Even though radiation levels in a village near the site of the Fukushima nuclear disaster still exceed international guidelines, its evacuated residents are being coerced to return, according to a Greenpeace report.

19098557_303.jpg

 

Residents from the Japanese ghost village of Iitate will be allowed to return to their former homes at the end of March – the first time since they were forced to flee the Fukushima nuclear disaster in 2011. That’s the date the Japanese government has set to lift evacuation orders.

But according to environmental organization Greenpeace, it’s uncertain whether many will want to. Greenpeace says tests it has carried out on homes in Iitate show that despite decontamination, radiation levels are still dangerously high – but that’s not stopping the Japanese governmenment from pressuring evacuees from returning, under threat of losing financial support.

Those who refuse to go back to their former homes, and are dependent on the Japanese government’s financial help, are faced with a dilemma. After a year from when an area is declared safe again to live in, evacuated residents will see their compensation payments terminated by the government.

Radiation ‘comparable with Chernobyl’

The nuclear disaster led to more than 160,000 people being evacuated and displaced from their homes. Of these, many tens of thousands are still living in temporary accommodation six years on.

The village of Iitate, lying northwest of the destroyed reactors at Fukushima Daiichi power plantand from which 6,000 citizens had to be evacuated, was one of the most heavily contaminated following the nuclear disaster.

6496339_401.jpg

Government employees monitor radiation at a day-care center in Iitate in 2011

Around 75 per cent of Iitate is mountainous forest, an integral part of residents’ lives before the nuclear accident.

But according to Greenpeace’s report, published on Tuesday, radiation levels in these woods are “comparable to the current levels within the Chernobyl 30km exclusion zone – an area that more than 30 years after the accident remains formally closed to habitation.”

Put another way, Greenpeace said that in 2017, there clearly remains a radiological emergency within Iitate – defining emergency thus: “If these radiation levels were measured in a nuclear facility, not Iitate, prompt action would be required by the authorities to mitigate serious adverse consequences for human health and safety, property or the environment.”

The environmental organization says decontamination efforts have primarily focused on the areas immediately around peoples’ homes, in agricultural fields and in 20-meter strips along public roads.

But these efforts ended up generating millions of tons of nuclear waste – these now lie at thousands of locations across the prefecture, but they haven’t reduced the level of radiation in Iitate “to levels that are safe,” says Greenpeace.

‘Normalizing’ nuclear disaster?

The organization has accused the Japanese government of trying “to normalize a nuclear disaster, creating the myth that just years after the widespread radioactive contamination caused by the nuclear accident of 11 March 2011, people’s lives and communities can be restored and reclaimed.

“By doing so, it hopes, over time, to overcome public resistance to nuclear power.”

Greenpeace also lambasted the government for leaving unanswered what it calls a critical question for those trying to decide whether to return or not: what radiation dose will they be subjected to, not just in one year but over decades or a lifetime?

19098805_401.jpg

Greenpeace says Japan’s government wants to restore public confidence in nuclear power at the cost of harming residents

“Until now the Japanese government has exclusively focused on annual radiation exposure and not the potential radiation dose rates returning citizens could potentially face over their entire lifetime,” says Greenpeace.

Greenpeace, which has been monitoring Iitate since 2011, carried out its latest survey in November 2016

It found that the average radiation dose range for Iitate beginning from March 2017 over a 70-year lifetime was between 39 millisieverts (mSv) and 183mSv – and that’s not including natural radiation exposure expected over a lifetime, or the exposure received in the days, weeks and months following the March 2011 nuclear disaster.

That exceeds yearly guidelines set by the International Commission on Radiological Protection (ICRP) when added up over a 70-year period – it puts the maximum recommended radiation exposure at 1mSv annually.

Greenpeace says: “The highly complex radiological emergency situation in Iitate, and with a high degree of uncertainty and unknown risks, means that there is no return to normal in Iitate, Fukushima prefecture.”

It has called on the Japanese government to cease its return policy, and to provide full financial support to evacuees, and “allow citizens to decide whether to return or relocate free from duress and financial coercion.”

According to Greenpeace, “for the more than 6,000 citizens of Iitate, this is a time of uncertainty and anxiety.”

Heinz Smital, nuclear physicist and radiation expert at Greenpeace Germany, and part of the team taking measurements at Iitate, told DW the residents were faced with a very difficult situation.

“If you decide to live elsewhere [and not return to Iitate], then you don’t have money, you’re sometimes not welcomed in another area so you are forced to leave, because people say, ‘you’re not going back but you could go back,'” he said. “But for people who go back, they have contaminated land, so how can they use the fields for agriculture?”

He urged the Japanese government to more involve those affected in the decision-making process and not try to give an impression that things are “going back to normal.”

“It’s a violation of human rights to force people into such a situation because they haven’t done anything wrong, it’s the operator of the power plant responsible for the damage it caused,” said Smital.

“It’s very clear that there’s very serious damage to the property and the lifestyle of the people but the government doesn’t care about this.”

http://www.dw.com/en/fukushima-nuclear-disaster-evacuees-pressured-to-return-to-contaminated-homes-says-greenpeace/a-37639353

February 23, 2017 Posted by | Fukushima 2017 | , , | Leave a comment

Stand in solidarity Defend the human rights of Fukushima survivors

Solidarity.jpg

 

Disasters like Chernobyl and Fukushima remind the world how dangerous nuclear power is. But right now, the nuclear industry is trying to downplay the risks of a nuclear disaster. In Fukushima radiation exposure is still a very real threat despite failed “decontamination”.

The Japanese government is set to lift evacuation orders in heavily contaminated areas around Fukushima. It will cut compensation and housing support to survivors, who are still struggling six years later.

Their basic rights to health, housing, and environment are being violated. The government is desperately trying to minimize the disaster at the expense of survivors in an attempt to revive the dying nuclear industry and suffocate other cleaner energy sources. We must say no!

Sign now to demand the government provides fair compensation, housing support, and is fully transparent about the radiation risks.

We’ll deliver your signature to the Prime Minister so he hears the global wave of resistance against nuclear!

https://act.greenpeace.org/page/6288/petition/1?_ga=1.23785721.2131293321.1485515415

February 23, 2017 Posted by | Fukushima 2017 | , , , | Leave a comment

High radiation risks in Fukushima village as government prepares to lift evacuation order – Greenpeace

jklmlumu
Tokyo, 21 February 2017 – The Japanese government will soon lift evacuation orders for 6,000 citizens of iitate village in Fukushima prefecture where radiation levels in nearby forests are comparable to the current levels within the Chernobyl 30km exclusion zone – an area that more than 30 years after the accident remains formally closed to habitation. Seventy-five percent of Iitate is contaminated forested mountains.

A recent Greenpeace Japan led survey team found radiation dose rates at houses in the village of Iitate well above long-term government targets, with annual and lifetime exposure levels posing a long-term risk to citizens who may return. Evacuation orders will be lifted for Iitate no later than 31 March 2017, to be followed one year later by the termination of compensation payments.

“The relatively high radiation values, both inside and outside houses, show an unacceptable radiation risk for citizens if they were to return to Iitate. For citizens returning to their irradiated homes they are at risk of receiving radiation equivalent to one chest X-ray every week. This is not normal or acceptable,” said Ai Kashiwagi, energy campaigner with Greenpeace Japan [1].

As Japan nears the six years from beginning of the nuclear disaster, the Japanese government last week confirmed that it has not yet conducted any assessments of lifetime exposure risks for citizens if they were to return to Iitate.

The Greenpeace Japan survey results are based on thousands of real-time scanning measurements, including of houses spread over the Iitate region. This data was then used to calculate a weighted average around the houses, which were then computed to give annual exposure rates and over a lifetime of 70 years, taking into account radioactive isotope decay. The survey work also included soil sampling with analysis in an independent laboratory in Tokyo, the measurement of radiation hot spots and the recovery of personal dose badges that had been installed in two houses in February 2016.

For lifetime exposure due to external cesium radiation exposure, the dose range has been calculated, at between 39 mSv and 183 mSv, depending on either 8 or 12 hours per day spent outdoors, for citizens living at the houses over a 70 year period beginning in March 2017 [2]. Among the thousands of points Greenpeace Japan measured for each house, nearly all the radiation readings showed that the levels were far higher than the government’s long term decontamination target of 0.23µSv/h, which would give a dose of 1 mSv/yr.

The weighted average levels measured outside the house of Iitate citizen Toru Anzai was 0.7µSv/h, which would equal 2.5 mSv per year; even more concerning in addition, was the dose badges inside the house showed values in the range between 5.1 to 10.4mSv per year raising questions over the reliability of government estimates [3].

These levels far exceed the 1 mSv annual maximum limit recommended by the International Commission on Radiological Protection (ICRP) [4] , yet the decontamination program is being declared complete for the area that will have its evacuation order lifted next month.

“The government is not basing its policies on science or in the interest of protecting public health. It has failed to provide estimates of lifetime exposure rates for Iitate’s citizens, nor considered how re-contamination from forests will pose a threat for decades to come,” said Jan Vande Putte, radiation specialist with Greenpeace Belgium.

“The Abe government is attempting to create a false reality that six years after the start of the Fukushima Daiichi accident life is returning to normal. In the real world of today, and for decades to come, there is and will be nothing normal about the emergency radiological situation in Iitate,” said Vande Putte.

Greenpeace is demanding that the Japanese government provide full financial support to survivors, so that they are not forced to return for economic reasons. It must take measures to reduce radiation exposure to the absolute minimum to protect public health and allow citizens to decide whether to return or relocate free from duress and financial coercion.

Greenpeace has launched a public petition in solidarity in defense of human rights of Fukushima survivors.

Notes to Editors:

The report can be accessed here: “No Return to Normal”.

Photo and video is available here.

[1] X-ray dose rates range depend on multiple factors, including the equipment used and the patient. A typical dose per chest X-ray would be 0.05mSv, which if given each week would be 2.6 mSv over a year.

[2] These figures do not include natural radiation exposures expected over a lifetime, nor does it include the external and internal doses received during the days and weeks following the March 2011 Fukushima Daiichi nuclear accident. In the case of many citizens of Iitate, evacuation was both delayed and complex, the early-stage external radiation exposure estimated for the 1,812 villagers where estimations of external radiation dose average 7 mSv, with the highest being 23.5 mSv according to Imanaka. Internal exposure from consumption of contaminated food products is also not included.

[3] The government estimates that levels of radiation inside houses is 60 percent less than outside due to the shielding effect of the building. The Greenpeace results raise the possibility that this is not a reliable basis for estimating dose levels in houses.

[4] ICRP recommendations for the public, sets the maximum recommended dose for areas that are not affected by a nuclear accident at 1 mSv a year. However, the Japanese government set a condition that it is acceptable for the public to receive up to 20 mSv per year in Iitate, as a response to an emergency right after the Fukushima Daiichi nuclear accident.

http://www.greenpeace.org/international/en/press/releases/2017/Greenpeace-exposes-high-radiation-risks-in-Fukushima-village-as-government-prepares-to-lift-evacuation-order/

February 23, 2017 Posted by | Fukushima 2017 | , , , , | Leave a comment

University punishes teacher over comment to Fukushima student about glowing in dark

KOBE (Kyodo) — A part-time teacher at Kwansei Gakuin University made a comment ridiculing a student from nuclear disaster-hit Fukushima Prefecture in 2014, saying that she might glow in the dark because of her supposed exposure to radiation, the western Japan university said Tuesday.

The remark was made by an English-language teacher, identified as a foreign national in his 40s, according to the university in Nishinomiya, Hyogo Prefecture. He later explained that it was supposed to be a joke.

The university said the teacher received a three-month pay cut dated last Friday as the university regards his comment as discriminatory and “inconsiderate to people affected by” the March 11, 2011, quake and tsunami disaster, which led to a crisis at the Fukushima Daiichi nuclear plant.

Although the pay cut will be applied from March as a formality, the university will not renew the teacher’s contract when it expires at the end of March in line with the teacher’s request.

During his English class sometime around October or November 2014, the teacher asked the student, who had entered the university in April that year, where she was from. After her answer, the teacher turned off the lights and said he thought she would glow.

The student, who is in her 20s, found it “difficult” to attend classes after the incident, the university said.

After she learned the university had opened a harassment counseling center in April last year, the student sought advice about the incident.

“We would like to apologize to the student and people affected by the disaster,” Shoichi Ito, vice president of the university, said in a statement, adding the school will make sure that such incidents will not occur again.

Disaster reconstruction minister Masahiro Imamura told reporters the same day the incident was “very regrettable” and “really intolerable.”

http://mainichi.jp/english/articles/20170221/p2g/00m/0dm/069000c

February 23, 2017 Posted by | Fukushima 2017 | , | Leave a comment

Tepco uses radiation imaging drone at Fukushima Daiichi

20 feb 2017.jpg

 

Tepco uses the RISER quadcopter drone to visually map gamma radiation in the unit 3 turbine building. The RISER quadcopter drone is equipped with GPS, HD cameras and the N-Visage 3D gamma radiation detector which produces color images of radiation. It has a small size 3d gamma camera.

The N-Visage 3D gamma radiation detector  technology has been used previously to examine the refueling floor of unit 2 and some other areas of the reactor buildings.

The RISER quadcopter drone has a maximum radiation resistance of 10 mSv/hr so it won’t be used into the more dangerous areas of the site.

Source: http://www.tepco.co.jp/nu/fukushima-np/handouts/2017/images1/handouts_170220_08-j.pdf

February 22, 2017 Posted by | Fukushima 2017 | , , | Leave a comment

Rebuilding Fukushima through Soccer

To expose children to possible radioactive nanoparticles without any protection just for the sake of propaganda to show that everything is safe and back to normal in Fukushima is irresponsible and criminal! All in the name of the recovery and reconstruction campaign organized by the Japanese  government to welcome all the tourists to come to “clean” beautiful Japan for the 2020 Tokyo Olympics! Olympics to which Fukushima produce will be used to prepare the meals fed to the visiting athletes! All in the name of promotion and economic reconstruction! Alternate facts, total denial of reality being substituted to real facts and dangers. A total insanity!

20170220_03

A former soccer training facility close to Japan’s crippled Fukushima Daiichi Nuclear Plant has been used as a staging point for recovery work since the 2011 nuclear disaster, but that’s about to change.

Temporary dormitories for workers stand where there used to be a soccer field at the facility, called J-Village. The area is filled with memories for Shigenari Akashi, who worked as a coach for a junior youth team there for more than 10 years.

“National tournament finals used to be held here. Children from all over the country would practice hard, aspiring to play here,” Akashi says.

J-Village was Japan’s first national soccer training center. It opened in 1997 and over the years saw more than a million visitors. The complex was even used to train the national teams of Japan and Argentina.

But the nuclear disaster changed everything. The facility is just 20 kilometers from the plant, so Tokyo Electric Power Company rented it to set up an operational base for containing the accident.

“I was in shock and at a loss for words when I saw the Self-Defense Forces’ tanks here, and the gravel laid on the natural turf for the parking lot,” says Akashi.

At the end of last year, the moment he had been waiting for finally arrived as TEPCO began work to return the facility to its original form.

Fukushima Prefecture has even bigger plans — tt wants to build Japan’s first “all-weather soccer field” at the site. Part of the facility is scheduled to open in the summer of 2018.

The Japan Football Association has given the project its full support. The Japanese national team will use the new J-Village as its training base for the 2020 Tokyo Olympics.

But there are bigger challenges than rebuilding. There are fears over radiation levels — in some areas they’re still higher than international standards recommend. So the J-Village operator has a plan.

“The construction work will focus on largely replacing the soil, a technique we expect will reduce radiation levels more than usual decontamination methods,” says Eiji Ueda, who is executive vice president at the facility. “We can emphasize how safe it is by hosting national teams from Japan or perhaps abroad for training.”

A town near J-Village was evacuated because of the disaster. Residents got the green light to move back a year and a half ago but few have returned as most of the evacuees still live in a neighboring city.

Akashi and his co-workers have been giving soccer classes for children, including some who lived near J-Village. But there are mixed feelings about playing there again.

“I want to use the new J-Village, but I live far away now, so it will be hard to go there very often,” says a boy at the facility.

“We still have the lingering memory of it being used as the staging ground for decommissioning work,” says one father.

For Akashi, he’s got a specific goal in mind.

“In reviving J-Village, we want to give back local people a gathering place and their sense of pride. We believe this will also help to revive Fukushima as a whole,” he says.

The clock on the J-Village scoreboard is stopped at 2:46 p.m., the moment the earthquake struck. The deep rift created over the last 6 years will need to be filled so that the clock can move forward once more.

https://www3.nhk.or.jp/nhkworld/en/news/editors/3/rebuildingfukushimathroughsoccer/

February 22, 2017 Posted by | Fukushima 2017 | , , , , | Leave a comment

Fukushima 6 Years After: No Return to Normal

 

The Japanese government is set to lift evacuation orders in heavily contaminated areas around Fukushima. It will cut compensation and housing support to survivors, who are still struggling six years later.

Their basic rights to health, housing, and environment are being violated. The government is desperately trying to minimize the disaster at the expense of survivors in an attempt to revive the dying nuclear industry and suffocate other cleaner energy sources. We must say no!

Greenpeace has just published report on the Fukushima disaster entitled “No return to normal”. They made a study of the potential doses of the inhabitants who would return to the evacuated areas, with a focus on Iitate-mura. http://www.greenpeace.org/japan/Global/japan/pdf/NRN_FINweb4.pdf

The report is based on many on-site measurements and makes lifetime dose assessments. It should be noted that the samples were taken by the citizen laboratory Chikurin, founded with the support of the ACRO. http://chikurin.org/

The authorities planned to lift the evacuation order at the end of March in Iitaté-mura, except in areas classified as difficult return zones, as well as in the Yamakiya district of Kawamata. Compensation will stop within one year. This concerns more than 6,000 people in Iitate who are facing a dilemma, as in all the other contaminated territories.

Greenpeace recalls that decontamination concerns only areas close to dwellings and cultivated fields and that forest covers 75% of this mountainous area. Even in areas where decontamination work has been carried out, the doses remain high. Greenpeace carried out measurements of soil contamination and dose in 7 dwellings to estimate the exposure for people who would return. This varies between 39 and 183 mSv over 70 years from March 2017. This may exceed the limit of 1 mSv / year which is the dose limit in normal time and the total dose of 100 mSv from which the Japanese authorities admit that there is an increased risk of cancer. The doses taken at the beginning of the disaster are not taken into account in this calculation.

In its calculations, the government estimates that the dose rate is reduced by 60% in homes due to the screening effect of the walls. But the measurements made by Greenpeace in a house show that the reduction in exposure is not as strong.

Source: http://fukushima.eu.org/fukushima-6-ans-apres-rapport-de-greenpeace/

Translation Hervé Courtois

February 22, 2017 Posted by | Fukushima 2017 | , , , , , , | Leave a comment

Coming 6th Anniversary of the beginning of the still ongoing Fukushima Daiichi nuclear catastrophe

16807330_10208421888040961_742151318134098760_n

 

Our Rainbow Warriors Facebook group started in 2011 as an FB group about the Fukushima catastrophe, its old name was the “Fukushima 311 Watchdogs”. In June 2012, after an exhausting first year the Fukushima 311 Watchdogsgroup  was dissolved, and one month later was reborn as the Rainbow Warriors, with a broader scope of interests, environment protection, climate change etc.  https://www.facebook.com/groups/277245265712386/
However the ongoing Fukushima catastrophe still remains one of our our major concerns.
The Fukushima 311 Watchdogs has survived as a community FB page:
Fukushima 311 Watchdogs https://www.facebook.com/fukushima311watchdog/
and as a blog: Fukushima 311 Watchdogs https://dunrenard.wordpress.com/

This coming March 11th will be the 6th Anniversary of the beginning of the still ongoing nuclear catastrophe. Many people have disappeared along the way since March 2011, however among those who were with us right from the beginning, the Fukushima Watchers, the Fukushima Watchdogs, some haven’t yet forgotten  and are still here with us.

3.11.2017 FUKUSHIMA SIXTH ANNIVERSARY ONGOING DISASTER.
TAKE ACTION: #FUKU+6 Anniversary is happening 3.11.17 … six years since the #Fukushima nuclear meltdown and ongoing poisoning of our oceans began … our air land food water have been contaminated. #Fukushima continues to spew radioisotopes into the Pacific Ocean threatening vital marine life, ecosystems and the food chain. Japan continues to burn radioactive debris and dump it into the Pacific spreading poison into the atmosphere. Join the FUKU+6 actions and events fb page taking place worldwide. Act in solidarity, please click on this image, download it, and make it your cover pic, and help spread the word. https://www.facebook.com/groups/3.11fukushimasixthanniversaryactions/601393323403623/?ref=notif&notif_t=like&notif_id=1487640969842420

February 21, 2017 Posted by | Fukushima 2017 | , , | Leave a comment

FOCUS: Failed Survey Complicates N-Fuel Removal at Fukushima Plant

It looks like its too radioactive for robots to survive. I wonder how they will do this work now?

article-10019-hero.jpg

Tokyo, Feb. 20 (Jiji Press)–A failed robot survey of melted nuclear fuel that has dropped through the bottom of a damaged reactor pressure chamber at the Fukushima No. 1 nuclear plant complicates the formulation of a policy in the summer for taking out the fuel debris.
The removal of the molten nuclear fuel is regarded as the most demanding challenge in the decommissioning of the disaster-stricken plant’s reactors, said to take 30 to 40 years.
Tokyo Electric Power Company Holdings Co. <9501>, the manager of the plant in Fukushima Prefecture, northeastern Japan, is discussing the drawing up of a broad policy outline before conducting an additional survey to work out a detailed plan for the nuclear fuel removal, company officials said.
TEPCO’s initial plan called for a self-propelled survey robot, dubbed scorpion, to enter the No. 2 reactor’s containment vessel and travel on a 7.2-meter rail to reach a metal grating directly beneath the reactor’s damaged pressure chamber. The robot would have surveyed the extent of damage to the chamber, while locating melted nuclear fuel that is believed to have dropped through the metal grating to the bottom of the containment vessel and shooting the fuel’s images.
The No. 2 reactor is one of the three units that suffered meltdown due to the failure of their cooling systems caused by the March 2011 earthquake and tsunami.

http://jen.jiji.com/jc/eng?g=eco&k=2017022000007

February 21, 2017 Posted by | Fukushima 2017 | , , | Leave a comment

Radiation levels at Fukushima reactor puzzle nuclear experts

It is unclear why there is less radioactivity under the reactor vessel, when it is where there should be the most.

21 feb 2017.jpg

A robot was expected to solidify ways to clean up the No. 2 reactor at the Fukushima No. 1 nuclear plant, but its short-lived mission raised puzzling questions that could derail existing decommissioning plans.

The robot, Sasori, was abandoned in the melted-down reactor after it became stuck in deposits and other debris that are believed to have interfered with its drive system.

But it did take radiation measurements that indicate Tokyo Electric Power Co., operator of the plant, was too optimistic about the state and location of the melted fuel within the reactor. The melted fuel, in fact, may be spread out all over the reactor’s containment vessel.

Scientists had believed the melted nuclear fuel fell through the reactor’s pressure vessel and landed on metal grating and the floor of the containment vessel.

The results of Sasori’s investigation, coupled with previous data taken from possible images of the melted fuel, show the situation within the reactor is much worse than expected. And a fresh investigation into the reactor is now nowhere in sight.

A remote-controlled video camera inserted into the reactor on Jan. 30 took what are believed to be the first images of melted fuel at the plant, which suffered a triple meltdown after the March 2011 Great East Japan Earthquake and tsunami.

Based on the images, TEPCO estimated 530 sieverts per hour at a point almost halfway between the metal grating directly beneath the pressure vessel and the wall of the containment vessel. Black lumps on the grating are believed to be melted fuel.

A different robot sent in on Feb. 9 to take pictures and prepare for Sasori’s mission estimated 650 sieverts per hour near the same spot.

Both 530 and 650 sieverts per hour can kill a person within a minute.

Sasori, equipped with a dosimeter and two cameras, on Feb. 16 recorded a reading of 210 sieverts per hour near the same location, the highest figure measured with instruments in the aftermath of the disaster.

Sasori was supposed to travel along a rail connecting the outer wall of the containment vessel with the metal grating to measure radiation doses and shoot pictures inside, essential parts of work toward decommissioning the reactor.

After traveling only 2 meters, the robot became stuck before it could reach the metal grating.

TEPCO at a news conference repeatedly said that Sasori’s investigation was not a “failure” but had produced “meaningful” results.

However, an official close to TEPCO said, “I had great expectations for Sasori, so I was shocked by how it turned out.”

Hiroaki Abe, professor of nuclear materials at the University of Tokyo who has studied TEPCO’s footage, tried to explain why high doses were estimated between the pressure vessel and the containment vessel.

Instead of directly landing on the rail, the melted nuclear fuel may have flown off after it reacted violently with the concrete, which had a high moisture content, at the bottom of the containment vessel, just like what happens when lava pours into the sea,” Abe said.

But he said this scenario raises a puzzling question, considering the estimated radiation readings near the area below the pressure vessel were down to 20 sieverts per hour, according to an analysis of the video footage.

If nuclear fuel debris had splattered around, the radiation levels at the central area below the pressure vessel must be extremely high,” he said. “In addition, deposits on the rail would have taken the shape of small pieces if they were, in fact, flying nuclear fuel debris. The findings are puzzling.”

Images by the remote-controlled camera also showed that equipment in the lower part of the pressure vessel was relatively well preserved, indicating that the hole at the bottom of the vessel is not very large.

How to remove nuclear fuel debris will all depend on how much remains inside the pressure vessel and how much fell out,” Abe said.

Toru Obara, professor of nuclear engineering at the Tokyo Institute of Technology, stressed the need to retrieve substances from the bottom of the robots or elsewhere.

We could get clues as to the state of the melted nuclear fuel and the development of a meltdown if we could figure out which materials mixed with the nuclear fuel,” he said.

The surveys by the camera and robots were conducted from a makeshift center at the No. 2 reactor. The center’s walls are made from radiation-blocking metal.

TEPCO and the government plan to determine a method to remove nuclear fuel debris in fiscal 2018 before they proceed with the actual retrieval process at one of the three destroyed reactors.

One possible method involves filling the containment vessels with water to prevent radioactive substances from escaping.

http://www.asahi.com/ajw/articles/AJ201702190042.html

16684040_10154551581058772_8577152042460083451_n

February 21, 2017 Posted by | Fukushima 2017 | , , | Leave a comment

Fukushima peach exports recover in Southeast Asia, sparking hope for other produce???

1936444_10204102300877695_2518584374027743598_n.jpg

 

The original article was published by Fukushima Minpo, local Fukushima Newspaper, which promotes “recovery”.To export your contaminated fruits to other countries is plainly criminal.

Fukushima peaches are making inroads into Southeast Asian markets in what prefectural officials see as a model case of recovery in its farm produce.

Fukushima grabbed the top share of Japanese peach exports to three Southeast Asian countries last year — 73.9 percent in Thailand, 76.8 percent in Malaysia and 55.9 percent in Indonesia.

In terms of volume, Fukushima exported a combined 30.6 tons of peaches to the three countries plus Singapore in 2016, surpassing the 23.9 tons logged in 2010 — the year before the triple meltdown at the Fukushima No. 1 power plant shattered trust in its farm produce in March 2011.

Given the improved figures, the Fukushima Prefectural Government now believes the measures it took to combat harmful rumors are paying off. It hopes to revive sales channels for other produce by using the recovery of peach exports as a base.

The prefectural government announced the export data at the end of January based on the Finance Ministry’s trade statistics for 2016 and other figures compiled by the Fukushima headquarters of the National Federation of Agricultural Cooperative Associations, or JA Zen-Noh.

Fukushima is the nation’s No. 2 peach-growing prefecture after Yamanashi and has been dubbed a “fruit kingdom” for the wide variety grown, including cherries, grapes, pears and apples.

Its peach exports peaked at 70 tons in 2008, thanks mainly to Taiwan and Hong Kong, but import bans imposed from the Fukushima disaster saw the peach trade collapse to zero in 2011.

According to the prefecture’s public relations office, Fukushima was quick to review its sales strategy and shift focus to Southeast Asia, where some countries eased import restrictions on its produce at an early stage.

A decision to promote the sweetness and freshness of Fukushima peaches was also a major factor in grabbing the hearts of consumers, the office said.

Despite the success in Thailand, Malaysia and Indonesia, it may take time before other countries in the region follow suit.

In Singapore, for example, Fukushima peaches last year had a market share of only 12 percent among all peaches the city-state imported from Japan.

The prefecture is hoping that the improvements in the three countries will help persuade other markets, such as Hong Kong and Taiwan, that its peaches are safe.

The recovery of the fruit’s reputation overseas has provided great encouragement to the prefecture’s peach growers, including Shigeyoshi Saito, 58, of the city of Date.

Along with other items, peaches are a main pillar of Fukushima’s farm produce,” he said. “I hope their good reputation in Southeast Asia will spread the word to the entire world.”

http://www.japantimes.co.jp/news/2017/02/19/national/fukushima-peach-exports-recover-southeast-asia-sparking-hope-produce/#.WKoHZvL9KM8

February 21, 2017 Posted by | Fukushima 2017 | , , , , | Leave a comment

Melted Nuclear Fuel Search Proceeds One Dead Robot at a Time

16-fev-2017

 

The latest robot seeking to find the 600 tons of nuclear fuel and debris that melted down six year ago in Japan’s wrecked Fukushima Dai-Ichi power plant met its end in less than a day.

The scorpion-shaped machine, built by Toshiba Corp., entered the No. 2 reactor core Thursday and stopped 3 meters (9.8 feet) short of a grate that would have provided a view of where fuel residue is suspected to have gathered. Two previous robots aborted similar missions after one got stuck in a gap and another was abandoned after finding no fuel in six days.

After spending most of the time since the 2011 disaster containing radiation and limiting ground water contamination, scientists still don’t have all the information they need for a cleanup that the Japanese government estimates will take four decades and cost 8 trillion yen ($70.6 billion). It’s not yet known if the fuel melted into or through the containment vessel’s concrete floor, and determining the fuel’s radioactivity and location is crucial to inventing the technology needed to remove it. 

The roadmap for removing the fuel is going to be long, 2020 and beyond,” Jacopo Buongiorno, a professor of nuclear science and engineering at the Massachusetts Institute of Technology, said in an e-mail. “The re-solidified fuel is likely stuck to the vessel wall and vessel internal structures. So the debris have to be cut, scooped, put into a sealed and shielded container and then extracted from the containment vessel. All done by robots.”

Read more: Robots are being utilized to clean up U.K.’s nuclear waste

To enter a primary containment vessel, which measures about 20 meters at its widest, more than 30 meters tall and is encased in meters of concrete, outside air pressure is increased to keep radiation from escaping and a sealed hole is opened that the robot passes through. Three reactors at the plant suffered meltdowns, and each poses different challenges and requires a custom approach for locating and removing the fuel, said Tatsuhiro Yamagishi, Tokyo Electric Power Co. Holdings Inc. spokesman.

The machines are built with specially hardened parts and minimal electronic circuitry so that they can withstand radiation, if only for a few hours at a time. Thursday’s mission ended after the robot’s left roller-belt failed, according to Tokyo Electric, better known as Tepco. Even if it had returned, this robot, like all others so far designed to aid the search for the lost fuel, was expected to find its final resting place inside a reactor.

No. 1 Unit

Hitachi Corp. in the next two months plans to send a machine into the No. 1 reactor core that scientists hope can transmit photos of the fuel and measure radiation levels.

The snake-like robot will lower a camera on a wire from a grate platform in the reactor to take photos and generate 3-D models of the bottom of the containment vessel. This will be the third time Hitachi sends in this robot design.

While the company is hopeful this robot will find some of the fuel, it will likely be unable to find all of it, according to Satoshi Okada, a Hitachi engineer working on the project. The company is already planning the next robot voyage for after April.

We are gathering information so that we can decide on a way to remove the fuel,” said Okada. “Once we understand the situation inside, we will be able to see the way to remove the fuel.”

No. 2 Unit

On Thursday, Toshiba’s scorpion-like robot entered the reactor and stopped short of making it onto the containment vessel’s grate. While Tepco decided not to retrieve it, the company views the attempt as progress.

We got a very good hint as to where the fuel could be from this entire expedition” Tepco official Yuichi Okamura said Thursday at a briefing in Tokyo. “I consider this a success, a big success.”

Tepco released images last month of a grate under the No. 2 reactor covered in black residue that may be the melted fuel — one of the strongest clues yet to its location. The company measured radiation levels of around 650 sieverts per hour through the sound-noise in the video, the highest so far recorded in the Fukushima complex.

A short-term, whole-body dose of over 10 sieverts would cause immediate illness and subsequent death within a few weeks, according to the World Nuclear Association.

The Hitachi and Toshiba robots are designed to handle 1,000 sieverts and no robot has yet been disabled due to radiation.

Radiation levels near the fuel are lethal,” said MIT’s Buongiorno, who holds the university’s Tepco chair, a professorship based on an initial donation by the company 10 years ago. There are no formal affiliations or obligations for the faculty who receive the chair, he said.

Because the No. 2 unit is the only one of the three reactors that didn’t experience a hydrogen explosion, there was no release into the atmosphere and radiation levels inside the core are higher compared to the other two units, according to the utility.

No. 3 Unit

Tepco’s balance sheet has been strapped by ballooning Fukushima cleanup costs and slumping national power demand. All of the company’s nuclear power plants remain shut since it halted the No. 6 reactor at its Kashiwazaki Kariwa station in March 2012. The company is seeking drastic changes in top management in consultation with the Japanese government, TV Asahi reported Friday, without attribution.

The utility has focused on removing spent fuel in the upper part of the reactor building, which Toshiba aims to extract with a claw-like system. This fuel didn’t melt and is still in a pool that controls its temperature.

The used-fuel in No. 3 is scheduled to begin removal before the end of the decade, the first among the three reactors that melted down. Toshiba is developing another robot to search for melted fuel, planned to enter sometime in the year ending March 2018. The company hasn’t announced yet the design or strategy.

https://about.bnef.com/blog/race-for-japans-melted-nuclear-fuel-leaves-trail-of-dead-robots/

February 21, 2017 Posted by | Fukushima 2017 | , , , | Leave a comment