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The quietly covered up story of thorium toxicity, leukaemias and birth defects, in Malaysia

ThoriumMitsubishi Quietly Cleans Up Its Former Refinery  http://www.nytimes.com/2011/03/09/business/energy-environment/09rareside.html?_r=0 By  : March 8, 2011 BUKIT MERAH, Malaysia — Hidden here in the jungles of north-central Malaysia, in a broad valley fringed with cave-pocked limestone cliffs topped with acacia and durian trees, lies the site of the largest radiation cleanup yet in the rare earth industry.

Residents blamed a rare earth refinery for birth defects and eight leukemia cases within five years in a community of 11,000 — after many years with no leukemia cases. Seven of the leukemia victims have since died.

The Bukit Merah case is little known even elsewhere in Malaysia, and virtually unknown in the West, because Mitsubishi Chemical quietly agreed to fix the problem even without a legal order to do so. Local protesters had contacted Japanese environmentalists and politicians, who in turn helped persuade the image-conscious company to close the refinery in 1992 and subsequently spend an estimated $100 million to clean up the site.

Image-burnishing was important because the company is part of the Mitsubishi Group of Companies, which has long made Malaysia the cornerstone of its southeast Asian operations. The group has dominant positions in manufacturing a range of products, including air-conditioners and cars.

Mitsubishi Chemical also reached an out-of-court settlement with residents here by agreeing to donate $164,000 to the community’s schools, while denying any responsibility for illnesses.

Osamu Shimizu, the director of Asian Rare Earth, the Mitsubishi Chemical subsidiary that owns the mine, declined to discuss details of the factory’s operation before it closed in 1992. But he said that the company was committed to a safe and complete cleanup.

Workers in protective gear have already removed 11,000 truckloads of radioactively contaminated material, hauling away every trace of the old refinery and even tainted soil from beneath it, down to the bedrock as much as 25 feet below, said Anthony Goh, the consultant overseeing the project for one of Mitsubishi’s contractors, GeoSyntec, an Atlanta-based firm.

To dispose of the radioactive material, engineers have cut the top off a hill three miles away in a forest reserve, buried the material inside the hill’s core and then entombed it under more than 20 feet of clay and granite.

The toughest part of the Bukit Merah cleanup will come this summer, when robots and workers in protective gear are to start trying to move more than 80,000 steel barrels of radioactive waste from a concrete bunker. They will mix it with cement and gypsum, and then permanently store it in the hilltop repository.

The refinery processed slag from old tin mines — material rich in rare earth ore. The company and Malaysian regulators said that it was statistically possible that the leukemia cases were a coincidence because tin mining towns tend to have above-average levels of background radiation. But an academic study of another tin mining town suggested that communities of Bukit Merah’s size should only have one leukemia case every 30 years.

Lai Kwan, aged 69, still recalls how she cheerfully moved in the 1980s from a sawmill job to a better-paying position in the refinery that involved proximity to radioactive materials. She remembers that while pregnant, she was told to take an unpaid day off only on days when the factory bosses said that a particularly dangerous consignment of ore had arrived.

She has spent the last 29 years washing, dressing, feeding and otherwise taking care of her son from that pregnancy, who was born with severe mental and physical disabilities. She and other local residents blame the refinery for the problems, although birth defects can have many causes.

“We saw it as a chance to get better pay,” Ms. Lai recalled. “We didn’t know what they were producing.”

February 28, 2015 Posted by | Malaysia, RARE EARTHS, Reference, thorium | Leave a comment

India-Pakistan tensions – how easily a terror attack could trigger nuclear war

text-relevantMajor terror attack against India could trigger nuclear war: experts http://www.deccanchronicle.com/150226/world-neighbours/article/major-terror-attack-against-india-could-trigger-nuclear-war-experts PTI | February 26, 2015Washington: Pakistan may use nuclear weapons against India if the latter goes for a large scale military assault against it in retaliation for a major terror attack emanating from across the border, two top American experts have warned US lawmakers.

Given the presence of a strong government in New Delhi and the pressure on it from Indian citizens in the event of a repeat of 26/11 type terror attack, the ties between the two neighbours have greater danger of escalating towards a devastating nuclear warfare, in particular from Pakistan.

Such a dangerous scenario can only be avoided by the US working with Islamabad to ensure that there is no further large scale terror attack on India emanating from Pakistan, two top American experts. George Perkovich and Ashley Tellis, told members of the powerful Senate Armed Services Committe and Sub committee on Strategic Forces during a hearing yesterday. Continue reading

February 27, 2015 Posted by | India, Pakistan, politics international | Leave a comment

Fukushima’s Unit 2 nuclear reactor’s meltdown was far worse than initially assumed

highly-recommended“.SimplyInfo.org Fukushima Daiichi Unit 2 Report 2015 (Excellent graphics) 

By The SimplyInfo Research Team
Dean Wilkie – Author
Edano San  – Author
Peter Melzer PhD – Author
Nancy Foust  – Editor

February 23, 2015

During the early events of the Fukushima Daiichi disaster unit 2 was given little attention in public facing information. It also appears that many of the outcomes from unit 2 may have been credited as being caused by other units a the plant or considered of unknown origin. Unit 2 may have been much worse in actuality than the public was being told and a larger contributor to the crisis. We reviewed multiple timelines and documentation sources of the events at Fukushima Daiichi and those specific to unit 2. This provided a clearer picture of what larger events may have been associated with unit 2′s event and the magnitude of the events inside unit 2. These events compared to the existing research into reactor failure modes and meltdown behaviors found that the events closely matched the expected outcomes………Unit 2′s meltdown and post meltdown progression was well anticipated by TEPCO based on their actions and their failure time estimates. TEPCO opened the torus vent line to the environment and left it open for 2.5 hours while fuel was likely already outside of the vessel and in the containment drywell, giving a clear route between corium and the environment. This action may have been unavoidable based on the available data from unit 2 in order to avoid a much larger containment failure that could not have been closed. It may have been the lesser of two bad options.

The available data and visual evidence for unit 2 show that contaminated water and fuel may have found a route out of the building through the basemat area. This highly radioactive water has shown up in the unit 2 turbine building basement and in the unit 2 trenches at the sea front, indicating the highly contaminated water may be flowing outside of the reactor building and in a manner quite different from the other two damaged units. If this is further confirmed to be the case, this may be a significant contributor to the ongoing highly radioactive water leaks that have defied efforts to block them.

Unit 2′s containment failure via the containment cap gasket continued to contribute a large percentage of the radiation escaping into the air at the plant even a year after the meltdowns. While the other two units have been admitted to have some failure or leakage from their reactor wells, unit 2 appears to be the major contributor to airborne releases via this route and continued to do so.

Newer information such as the failure of seawater injections to reach the RPV further ads to the growing body of information that indicates unit 2′s meltdown was far worse than initially assumed. Many early estimates of the extent of unit 2′s meltdowns were dependent on the assumption that water reached the melting fuel in quantities large enough to cool or cover the melted fuel. This newer understanding of the water injection shows those early estimates to be incorrect and that unit 2′s meltdown was much more severe than initially assumed. The timing of major events at the plant that tie to events at unit 2 and TEPCO’s increasing alarm over the degrading conditions of the plant indicates that unit 2 may have posed an even larger threat than the other two units at the plant. The chance event of the blow out panel dislodging early in the series of events may have helped unit 2 avoid a hydrogen explosion as seen at the other units. The actual meltdown and the extent of the damage at unit 2 may have been worse in many ways. http://www.fukuleaks.org/web/?p=14318

February 27, 2015 Posted by | Fukushima 2015 | Leave a comment

Fisheries ‘shocked’ at silence over water leak at wrecked Fukushima No. 1 plant

Feb 25, 2015

Fishermen in Fukushima Prefecture slammed Tokyo Electric Power Co. on Wednesday after it emerged that water containing cesium and other radioactive isotopes has been draining into the Pacific near the Fukushima No. 1 plant and that Tepco did nothing to prevent it despite learning of the leak last May.

“I don’t understand why (Tepco) kept silent even though they knew about it. Fishery operators are absolutely shocked,” Masakazu Yabuki, chief of the Iwaki fisheries cooperative, said at a meeting with Tepco officials.

Local fishermen have already given Tepco approval to dump groundwater into the ocean before it becomes tainted, to reduce the volume of water stored in tanks at the site. The operator is now doing this, pumping water from wells, monitoring it and piping it into the ocean.

The latest incident threatens to delay a second round of approval that Tepco wants the fishermen to provide.

The utility admitted Tuesday it failed to disclose leaks of rainwater containing radioactive substances from a drainage ditch at the stricken plant even though it was aware of high radiation in the water last spring.

The ditch receives runoff from the roof of the No. 2 reactor building, which is highly contaminated with radioactive substances such as cesium.

Tepco has said it recorded 29,400 becquerels of radioactive cesium per liter in water pooled on the rooftop.

The water also contained 52,000 becquerels of beta-ray-emitting radioactive substances such as strontium-90. It also detected some 1,050 becquerels of radioactive cesium and 1,500 becquerels of beta ray-emitting radioactive materials per liter near an outlet leading to the sea.

Tepco said there is no major change in the concentration of radioactive substances in seawater it sampled about 1 km from the drainage outlet.

Meanwhile on Sunday, Tepco reported water contaminated with high levels of radiation was flowing into the ocean at the plant’s port through another drainage ditch.

Yuji Moriyama, a Tepco spokesman said the utility did not disclose the information because there is no evidence of environmental impact.

“We were aware that the levels of radioactive materials around the drainage ditch were higher than other places,” Moriyama said, adding that they have been investigating the sources of contamination since last spring.

Source: Japan Times

http://www.japantimes.co.jp/news/2015/02/25/national/tepco-admits-failed-disclose-cesium-tainted-water-leaks-since-april/#.VO4-Cy4bKKG

February 25, 2015 Posted by | Japan | | Leave a comment

Fukushima cleanup fails to convince as just 10 to 20% of evacuees seek return

percentage of evacuees wanting to return feb 25 2015

February 25, 2015

Less than one-fifth of evacuees from the Fukushima nuclear disaster say they want to return to their homes, despite government efforts to speed up reconstruction in areas with lower radiation levels.

The finding came from a survey by the Reconstruction Agency conducted between August and October last year that covered about 7,100 evacuee households in Namie; 2,400 in Futaba; 4,000 in Okuma; and 5,600 in Tomioka.

Between 51 percent and 60 percent of the households responded to the poll, including those living outside Fukushima Prefecture.

The four towns, all situated near the crippled Fukushima No. 1 nuclear power plant, are divided into three zones based on annual radiation dosage levels: “difficult-to-return zones” with 50 millisieverts or more; “no-residence zones” between 20 and 50 millisieverts; and “zones being prepared for lifting of evacuation order,” with 20 millisieverts or less.

The central government has placed priority on decontaminating and reconstructing infrastructure in the latter zones to enable residents to return to their homes.

However, the survey showed that just 19.4 percent of evacuee households from “zones being prepared for lifting of evacuation order” in Namie wanted to return, while 14.7 percent of those in the zones in Tomioka felt the same.

Among evacuees from no-residence zones, 16.6 percent of households from Namie and 11.1 percent from Tomioka said they plan to return home when they are allowed.

Among those evacuated from difficult-to-return zones, 17.5 percent of households from Namie and 11.8 percent from Tomioka said they hope to resettle in their homes some day.

About 80 percent of all households in Namie and 70 percent of those in Tomioka are from no-residence zones and “zones being prepared for lifting of evacuation order.”

Still, even if the government lifts the evacuation order for these areas, only a handful of evacuees are likely to return, which would crimp revitalization plans for the towns.

Meanwhile, 32.4 percent of households evacuated from no-residence zones in Okuma, which cohosts the crippled plant with Futaba, said they want to return home.

The higher figure reflects preferential construction by the central government and town office of key facilities to promote the town’s reconstruction, spurring hope among residents to return. Decontamination work and restoration of a local highway route are also nearing an end in Okuma.

However, just 3 percent of Okuma residents are from no-residence zones, while the rest are from difficult-to-return zones.

Source: Asahi Shimbun

http://ajw.asahi.com/article/0311disaster/fukushima/AJ201502250050

February 25, 2015 Posted by | Japan | , | Leave a comment

Tepco covered-up an ongoing leak into the sea since last year April 2014

daiichi_drainage_canals leak since april 2014  admission 24 feb 2015

February 24, 2015

Tepco admits that it failed to disclose a leak since last year April 2014.

Unit 2′s roof and downspouts have been draining directly out to sea since the disaster. Water found on unit 2′s roofs was highly radioactive with 52,000 bq/liter on one roof

TEPCO did attempt to manage this by throwing down bags of zeolite at the downspout entrance and again at the drainage canal exits. Plans submitted to IRID for a drainage canal filter system called for a much more sophisticated system that would have forced any water leaving these drainage canals through a series of filters.

Zeolite bags were also placed around the entrance to the downspouts on the building roofs. Radiation readings in the downspout water was significantly lower than the water on the roof. A filter that forces all outgoing water through the filter media would have at least worked to more effectively filter water.

Source: Tepco
http://www.tepco.co.jp/en/nu/fukushima-np/handouts/2015/images/handouts_150224_01-e.pdf

February 25, 2015 Posted by | Japan | | 1 Comment

Rain is bringing a new source of radioactive water to Fukushima nuclear power plant

water-radiationFukushima operator finds new source of radiation leak into sea, GMA News  February 25, 2015 TOKYO – The operator of the tsunami-crippled Fukushima nuclear power plant said on Tuesday it had found a pool of highly contaminated water on the roof of a plant building and that it had probably leaked into the sea through a gutter when it rained.

The finding comes four years after a massive earthquake and tsunami caused meltdowns at Tokyo Electric Power Co Inc’s Fukushima reactors, and 1-1/2 years after Prime Minister Shinzo Abe assured the International Olympic Committee that radiation leaks at the plant were “under control”.
Tokyo’s victory over rivals Madrid and Istanbul to host the 2020 Olympic Games followed soon after Abe’s declaration.
Tokyo Electric said it has been aware since last spring that radiation levels in water running in one of the plant gutters rise when it rains but had confirmed the source of the contamination only on Tuesday……..
Sample rainwater collected at one corner of the rooftop contained 23,000 becquerels per litre of cesium 137, more than 10 times as high as radiation levels in sample water taken from other parts of the roof, Tokyo Electric said.  Reuters http://www.gmanetwork.com/news/story/442161/news/world/fukushima-operator-finds-new-source-of-radiation-leak-into-sea

February 25, 2015 Posted by | Fukushima 2015 | 1 Comment

Record concentration of radioactive Cesium in fish near Fukushima nuclear station port

Alarm at Fukushima Nuclear Plant: Radioactivity too High, National Japan News, By Ken Tanaka & Norihisa Taguchi 23 February 2014

“…….There are presently not enough sturdy, above-ground tanks that can be used take the water from the pits in which it is stored, TEPCO General Manager Masayuki Ono said at a news conference. Water has been leaking from the pits over the lst few weekends.“………Contaminated Water And Records  Tokyo Electric Power Company (TEPCO) has revealed that it may not have enough space to store the contaminated water that began to leak from its nuclear Fukushima plant over the weekend.

The company is still facing problems dealing with the consequences of the 2011 Fukushima disaster, as it attempts to keep reactors and spent fuel pools in a safe state known as cold shutdown.

A record quantity of radioactive cesium – 7,400 times the country’s limit deemed safe for human consumption – has been detected in a greenling fish in the waters near the crippled Fukushima plant, two years after the nuclear disaster.

radiation-in-sea--food-chaiTEPCO has also discovered a record 740,000 becquerels per kilogram of radioactive cesium in the fish, Kyodo News reported.

The operator installed a net on the seafloor of the port exit near the plant to prevent the fish from escaping.  The bottom-dwelling greenling fish was found in a cage set up by TEPCO inside the port next to the Fukushima Daiichi plant, a utility official told AP on condition of anonymity.

The company also indicated that the previous record of cesium concentration in fish was 510,000 becquerels per kilogram detected in another greenling caught in the same area, TEPCO said.https://onewayjapan.com/News-National/2015/09-Alarm-at-Fukushima-Nuclear-Plant-Radioactivity-too-High.html

February 25, 2015 Posted by | Fukushima 2015, oceans | 1 Comment

Emergency inspections at Fukushima nuclear plant. as radioactivity alarms go off

Multiple Alarms Set Off at Fukushima Plant: New leak of highly radioactive material detected — “Strontium-90 levels spike alarmingly” — “Emergency inspections” underway (VIDEO) http://enenews.com/alarm-rings-fukushima-plant-new-leak-highly-radioactive-material-detected-strontium-90-levels-spike-alarmingly-video?utm_source=feedburner&utm_medium=email&utm_campaign=Feed%3A+ENENews+%28Energy+News%29

AFP, Feb 22, 2015 (emphasis added): Sensors at the Fukushima nuclear plant have detected afresh leak of highly radioactive water into the sea… [with] contamination levels up to 70 times greater than the already-high radioactive status seen at the plant… TEPCO said itsemergency inspections of tanks storing nuclear waste water did not find any additional abnormalities… It was not immediately clear what caused the original spike… “With emergency surveys of the plant and monitoring of other sensors, we have no reason to believe tanks storing radioactive waste water have leaked… We are currently monitoring the sensors”…  The latest incident, one of several that have plagued the plant in recent months, reflects the difficulty in controlling and decommissioning the plant… TEPCO has not been able to effectively deal with an increasing amount of contaminated water…

NHK, Feb 22, 2015: Fukushima radioactive contamination sets off alarm — [TEPCO] says it has detected high levels of radioactive substances in a drainage channel on the plant’s premises on Sunday… the plant’s alarm system went off around 10 AM… levels of beta-ray emitting substances, which are not detected under normal circumstances, had risen to up to 7,230 Becquerels per liter… The utility suspects that contaminated water in the channel may have leaked into the port.

Japan Times, Feb 22, 2015: Strontium-90 levels spike alarmingly at Fukushima No. 1 plant — The Nuclear Regulation Authority said Sunday that an alarm went off at the Fukushima No. 1 nuclear plant signaling high radioactivity levels in drainage ditches… the first alarm sounded at around 10 a.m., and another alarm 10 minutes later indicated much higher levels. Officials said contaminated water may have been discharged into the ditches.

(Link removed) Jiji Press, Feb 22, 2015: Radioactivity Alarm Rings at TEPCO Fukushima Plant

Watch NHK’s broadcast here

February 25, 2015 Posted by | Fukushima 2015 | Leave a comment

Taiwanese petition against nuclear-waste reprocessing

Reprocessing--NOActivists petition against nuclear-waste reprocessing http://www.taipeitimes.com/News/taiwan/archives/2015/02/25/2003612205 By Tang Chia-ling Anti-nuclear group Mom Loves Taiwan has launched a petition against state-run Taiwan Power Co’s (Taipower) call for bids to reprocess about 1,200 bundles of spent fuel rods from the Jinshan and Guosheng nuclear power plants, which Taipower announced on Tuesday last week, one day before Lunar New Year’s Eve.

Taipower has obtained a budget of NT$11.25 billion (US$353 million) to deliver 480 and 720 bundles of spent fuel rods from the Jinshan Nuclear Power Plant, in New Taipei City’s Shihmen District (石門), and the Guosheng Nuclear Power Plant, in New Taipei City’s Wanli District (萬里), respectively overseas for reprocessing. The reprocessing is to be implemented over four years, with the first batch scheduled to be shipped by the end of this year.

The campaign, dubbed “Help Taiwan & Save The World!! Stop Taipower’s Nuclear Fuel Reprocessing Project,” had gathered about 270 signatures as of press time last night. Many signatories are from Japan, where the Fukushima Dai-Ichi nuclear power plant disaster took place in 2011.

The organization hopes to obtain 500,000 signatures and present them to Premier Mao Chi-kuo (毛治國) in the hope that the government will block the project.

Mom Loves Taiwan chief executive Yang Shun-mei (楊順美) said shipping highly radioactive nuclear waste overseas to be reprocessed only means that the waste will be shipped back to Taiwan 20 years later.

She said that nuclear waste reprocessing is a dying industry and that the French-based firm Areva, which is on the brink of bankruptcy, is a case in point.

She said that Avera is reportedly the company to which Taipower plans to send its fuel rods for reprocessing. She said the move would salvage the company from insolvency at the cost of polluting the environment, while bolstering nuclear arms production, and above all, no one would responsible for overseeing the reprocessing operations.

Taiwan Environmental Protection Union member Gloria Hsu (徐光蓉) said that Taipower did not inform the public of the actual cost of nuclear-waste reprocessing and that time and again it has requested more funds from the legislature shortly after its budget has been passed.She added that it did this while constructing the Fourth Nuclear Power Plant.

February 25, 2015 Posted by | opposition to nuclear, Taiwan | Leave a comment

Alarms as sudden higher radioactivity at Fukushima nuclear plant

Alarm at Fukushima Nuclear Plant: Radioactivity too High, National Japan News

23 February 2014 Japan’s Nuclear Regulation Authority said that on Sunday that an alarm went off at the stricken Nuclear Power Plant of Fukushima No. 1.

The regulatory body reported that part of highly radioactive water flew into the plant’s port. It has yet to find out the cause of the situation.

According to Japan’s Nuclear Regulation Authority and TEPCO, the company running the Nuclear Power Plant, the first alarm sounded at around 10 a.m. (1 a.m. GMT) , and another alarm 10 minutes later indicated much higher radioactivity levels.

The levels of beta ray-emitting radioactive substances, such as strontium-90, measured between 10:20 a.m. ad 10:50 a.m. stood at 5,050 to 7,230 becquerels per liter of water. https://onewayjapan.com/News-National/2015/09-Alarm-at-Fukushima-Nuclear-Plant-Radioactivity-too-High.html

February 25, 2015 Posted by | Fukushima 2015 | Leave a comment

Abe government “irresponsible” about nuclear wastes – Science Council of Japan

flag-japanNuclear waste disposal problem, Japan Times, FEB 22, 2015  Even as the Abe administration pushes for reactivating idled nuclear power reactors after they have cleared the Nuclear Regulation Authority’s safety screening, an open question remains: How will Japan dispose of highly radioactive waste produced by the nuclear reactors.

The trade and industry ministry has drafted a new policy on the waste scheme that paves the way for changing the disposal method in the future when policies change or new technologies become available, but it is far from clear if the move will facilitate the long-stalled process of finding a site for radioactive waste disposal.

Due to the lack of an established scheme for final disposal of the waste that would be generated after spent fuel is reprocessed, Japan’s nuclear power generation has long been likened to a condominium without a toilet. The absence of a solution was highlighted two years ago when former Prime Minister Junichiro Koizumi vocally expressed opposition to restarting nuclear power reactors that had been idled in the wake of the 2011 meltdowns at Tokyo Electric Power Co.’s Fukushima No. 1 nuclear power plant.

wastes-Fukushima-for-incine

The government in 2000 adopted a policy of disposing of highly radioactive waste by burying it deep underground. A power industry organization has solicited municipalities across the country that would be ready to host the final disposal site. A financially strapped town in Kochi Prefecture came forward in 2007 to apply for a documentary review in the selection process. But the bid was eventually withdrawn when its mayor faced strong opposition from local residents. He was forced out of office in a subsequent election. No progress has since been made on the issue.

Meanwhile, doubts have been raised about the safety and technical viability of vitrifying and burying the radioactive waste — which would need to be managed for tens of thousands of years before its radioactivity declined to levels considered safe — in a country prone to earthquakes and volcanic eruptions. …….

The government may be trying to win public support for restarting the idled reactors by demonstrating flexibility on moving the waste-disposal issue forward. But in its policy proposal now being prepared, the Science Council of Japan criticizes the government for being “irresponsible toward future generations” by seeking to restart the reactors without a decision on the waste-disposal site.

The council says it will be difficult to decide on the waste- disposal site “given that public trust in the government, power companies and scientists has been lost”………http://www.japantimes.co.jp/opinion/2015/02/22/editorials/nuclear-waste-disposal-problem/#.VOpJPXyUcnk

February 23, 2015 Posted by | Japan, wastes | 1 Comment

Yet another leak of highly radioactive water at Fukushima nuclear power plant

water-radiationFresh leak of highly radioactive water detected at Fukushima nuclear power plant, ABC News 23 Feb 15 

Sensors at the Fukushima nuclear plant have detected a fresh leak of highly radioactive water into the sea.

Tokyo Electric Power Co (TEPCO) said the sensors, which were rigged to a gutter that pours rain and ground water at the Fukushima Daiichi plant to a nearby bay, detected contamination levels up to 70 times greater than the already-high radioactive status seen at the plant campus.

TEPCO said its emergency inspections of tanks storing nuclear waste water did not find any additional abnormalities, but the firm said it shut the gutter to prevent radioactive water from going into the Pacific Ocean.

The higher-than-normal levels of contamination were detected on Sunday, with sensors showing radiation levels 50 to 70 times greater than usual…….http://www.abc.net.au/news/2015-02-22/fresh-nuclear-leak-detected-at-fukushima-plant/6200746

February 23, 2015 Posted by | Fukushima 2015 | Leave a comment

7,230,000 Bq/m3 of all β nuclide leaked from drain to the sea / “Contamination level suddenly jumped up”

7230000-Bqm3-of-all-β-nuclide-leaked-from-drain-to-the-sea-Contamination-level-suddenly-jumped-up-800x500_c

On 2/22/2015, Tepco announced the radiation level suddenly jumped up in the plant area drain to let it flow to the sea.

According to Tepco, 2 radiation monitors detected the rapid increase of all β nuclide density (to include Strontium-90) around 10:00AM.

The indicated radiation level was 5,050,000 〜 5,630,000 Bq/m3.

It made Tepco check the potential leakage of the contaminated water tanks upstream and contaminated water transferring system, but they did not shut down the drain outlet for nearly 3 hours for some reason.

Extremely high level of all β nuclide was detected from seawater near the outlet, which was 3,000,000 Bq/m3. The contaminated water flowed to the sea.

The highest density detected by the monitor was 7,230,000 Bq/m3, which was 10 〜 100 times much as usual.

After all, Tepco found no leakage from contaminated water related facility upstream. There is a possibility that highly contaminated groundwater moved and flowed to the drain.

Currently they are collecting the water from drain by vacuum truck.

http://www.tepco.co.jp/cc/press/2015/1248294_6818.html

http://www.tepco.co.jp/cc/press/2015/1248296_6818.html

http://www.tepco.co.jp/cc/press/2015/1248297_6818.html

http://www.tepco.co.jp/nu/fukushima-np/roadmap/images/l140616_04-j.pdf

Source: Fukushima Diary

7,230,000 Bq/m3 of all β nuclide leaked from drain to the sea / “Contamination level suddenly jumped up”

February 22, 2015 Posted by | Japan | | Leave a comment

Strontium-90 levels spike alarmingly at Fukushima No. 1 plant

Feb 22, 2015 

The Nuclear Regulation Authority said Sunday that an alarm went off at the Fukushima No. 1 nuclear plant signaling high radioactivity levels in drainage ditches.

According to the NRA and plant operator Tokyo Electric Power Co., the first alarm sounded at around 10 a.m., and another alarm 10 minutes later indicated much higher levels. Officials said contaminated water may have been discharged into the ditches.

The levels of beta ray-emitting substances, such as strontium-90, measured 5,050 to 7,230 becquerels per liter of water between 10:20 a.m. and 10:50 a.m. Tepco requires radioactivity levels of groundwater at the plant discharged into the sea to remain below 5 becquerels.

Since the drainage ditches are connected to the port of the No. 1 plant, the NRA has instructed Tepco to shut the gates there, officials said.

Tepco confirmed that no leaks from tanks containing radioactive water were found, but said it was investing further.

Source: Japan Times

http://www.japantimes.co.jp/news/2015/02/22/national/strontium-90-levels-spike-alarmingly-at-fukushima-no-1-plant/#.VOoTGy4bKKG

February 22, 2015 Posted by | Japan | | 2 Comments