Diet passes legislation to remove nuclear waste from Fukushima in 30 years http://ajw.asahi.com/article/0311disaster/fukushima/AJ201411200041 November 20, 2014 THE ASAHI SHIMBUN
The Diet passed a bill Nov. 19 mandating that radioactive soil and debris from the Fukushima decontamination work be moved outside the prefecture within 30 years, a step toward building interim storage facilities for the waste.
The law amendment was one of the five conditions set in September when the Fukushima prefectural government agreed to accept interim facilities to store contaminated waste collected during cleanup efforts around the crippled Fukushima No. 1 nuclear power plant.
Environment Minister Yoshio Mochizuki praised the legislation as a “major step forward.” However, hurdles remain high for the interim facilities–planned in Okuma and Futaba near the nuclear plant–to start accepting the waste in January as scheduled.
The bill amends a law regulating operations of the government-affiliated Japan Environmental Safety Corp. (JESCO), which is commissioned to dispose of used polychlorinated biphenyl (PCB).
The revised law stipulates the government will take necessary measures to remove waste from the prefecture for final disposal within 30 years after the interim facilities start operations. It also holds the government responsible for running the interim waste storage facilities and commissions JESCO to operate them.
Among the other conditions set by Fukushima Prefecture, the central government has agreed to earmark construction-related subsidies in its budget and take charge of the operation and maintenance of traffic routes for carrying in the waste.
One big problem for the government, however, is purchasing land for the facilities. The planned construction zone stretches 16 square kilometers, comprising 2,365 land plots belonging to individual owners.
As of the end of September, the government has located the whereabouts of only 1,269 landowners, partly because they live outside their properties as evacuees.
The government first plans to create temporary storage sites on individual land plots it purchases to start accepting radioactive waste there as early as possible. But it has not reached a purchase or lease agreement with a single landowner.
Taking into account this stumbling block, reconstruction minister Wataru Takeshita said Nov. 7 that the government’s plan to open the interim storage facilities in January will likely be pushed back.
(This article was written by Teru Okumura and Takuro Negishi.)
Fukushima Daiichi Updates From IRID Part 3; Testing The Goo Simply Info, November 19th, 2014 (Good diagrams)
IRID has made some progress on their research to find ways to seal the containment structures at Fukushima Daiichi. The plan has been to flood the containment structures in order to provide shielding during the fuel removal procedures. Concern has been raised about the ability of these structures to hold the weight and pressure of that much water or how this would impact the structure during an earthquake. The structures are already severely damaged along with the many locations where they leak.
The current research effort is looking for ways to try to seal the leaks in each of the areas known to be a leak path for the containment structure. One aspect that has not been discussed is what would happen if these structures did have a failure and leak after flooding. It is known that the reactor containment structures contain some loose fragmented fuel and other highly radioactive debris. A major leak could let loose a considerable radioactive slurry that would need to be quickly contained and remediated………http://www.fukuleaks.org/web/?p=14136
Radioactive water to tunnels unlikely stopped http://www3.nhk.or.jp/nhkworld/english/news/20141118_03.html Nov. 17, 2014 The officials overseeing the decommissioning of the Fukushima Daiichi nuclear power plant say a barrier designed to prevent radioactive water from entering underground tunnels is likely not doing its job.
The decommissioning work includes a plan to remove highly-radioactive water from tunnels under the facility grounds and then fill them with concrete to prevent leaks to surrounding soil.
A barrier to hold out water during this process was under construction until November 6th.
On Monday, workers removed 200,000 liters of water, estimating that water levels in the tunnels would drop by 80 centimeters.
However, the levels went down by only 20 centimeters. This led officials to conclude that more water was likely entering the tunnels from the reactor building while water was being pumped out.
The officials considered the effects of radioactive water on ground water, and decided on a plan to fill tunnels in with cement before they are completely drained.
They say the operation will require carefully handling to prevent any overflow of contaminated water.
Massive radiation spike at Fukushima: 40,000% increase below ground between Units 1 & 2 this month — Order of magnitude above record high set last year http://enenews.com/massive-radiation-spike-fukushima-40000-increase-month-below-ground-between-units-1-2-order-magnitude-higher-previous-records?utm_source=feedburner&utm_medium=email&utm_campaign=Feed%3A+ENENews+%28Energy+News%29
Groundwater pumped up from the well point (between Unit 1 and 2)
- Cs-134 @ 920 Bq/L
Up over 40,000% in 10 days
Previous record @ 110 Bq/L
- Cs-137 @ 3,000 Bq/L
Up over 40,000% in 10 days
Previous record @ 250 Bq/L
- Mn-54 @ 110 Bq/L
Up over 2,000% in 10 days
- Gross β @ 3,200,000 Bq/L
Up over 1,000% in 10 days
- Cs-134 @ ND (MDA=2)
- Cs-137 @ 6.3 Bq/L
- Mn-54 @ 5 Bq/L
- Gross β @ 230,000 Bq/L
Underground water observation hole No.1-17 (near well point between Unit 1 and 2)
See also from today: TV: Attempt to stop flow of highly radioactive liquid at Fukushima “in doubt” — AP: Much of it is pouring in trenches going out into Pacific — Experts: Amount entering ocean “increasing by 400 tons daily” — Problem “so severe” it’s consuming nearly all workers at site — Top Plant Official: “Little cause for optimism” (VIDEO)
TV: Attempt to stop flow of highly radioactive liquid at Fukushima “in doubt” — AP: Much of it is pouring in trenches going out into Pacific — Experts: Amount entering ocean “increasing by 400 tons daily” — Problem “so severe” it’s consuming nearly all workers at site — Top Plant Official: “Little cause for optimism” (VIDEO) http://enenews.com/tv-attempt-stop-flow-highly-radioactive-liquid-fukushima-doubt-ap-pouring-trenches-pacific-ocean-experts-amount-entering-sea-increasing-400-tons-daily-video?utm_source=feedburner&utm_medium=email&utm_campaign=Feed%3A+ENENews+%28Energy+News%29
NHK, Nov. 13, 2014 (emphasis added):
Radioactive water may still be entering tunnels — [TEPCO] faces another challenge in its effort to address radioactive water at the complex. It says highly contaminated water may still be flowing from reactor buildings into adjacent underground tunnels even after a work to stem the flow ended. The water in the tunnels is believed to be leaking into the sea… the firm began work in April to stem the flow of radioactive water between the reactor buildings and the tunnels… TEPCO finished the work on November 6th. But workers found that water levels in the reactor buildings and the tunnels are still linked…
ITAR-TASS, Nov 14, 2014: Radioactive water discharge from Fukushima Daiichi NPP into ocean continues; According to specialists, the volume of contaminated liquid that is leaking into the ocean is increasing by 400 tons daily— The repair operations… aimed at preventing radioactive water discharges into the ocean have yielded no result, the NPP operator [TEPCO] reported on Friday. The water… is still leaking into the NPP drainage system even after last week’s operations to stop the leak… [D]ue to the major damage of the plant’s infrastructure most of the water that is poured in… leaks into the drainage system and gets into the ground waters and then into the Pacific Ocean… The radioactive contamination level in the ground waters, according to TEPCO, is very high…
AP, Nov 12, 2014: Japan’s nuclear cleanup stymied by water woes… nearly all the workers are devoted to a single, enormously distracting problem: coping with the vast amount of water that becomes contaminated after it is pumped into the reactors to keep the melted radioactive fuel inside from overheating… The water becomes contaminated upon exposure to the radioactive fuel, and much of it pours into the reactor basements and maintenance trenches that extend to the Pacific Ocean.
The Guardian, Nov. 13, 2014: The man in charge of cleaning up the wrecked Fukushima Daiichi nuclear power plant has admitted there is little cause for optimism… The water problem is so severe that [Tepco has] enlisted almost all of their 6,000 workers… to bring it under control… “ I have no intention of being optimistic” [Fukushima Daiichi’s manager Akira Ono] told the Guardian… large quantities [of contaminated water] find their way to other parts of the site, including maintenance trenches connected to the sea… “The contaminated water is the most pressing issue – there is no doubt about that,” Ono said… “I cannot say exactly when, I hope things start getting better when the measures start taking effect.”
Food products ‘heavily contaminated’ by Fukushima found in US; Over 30,000 pCi/kg of cesium, also had Cobalt-60 and Antimony-124 — FDA: We found no Fukushima contamination in US food supply during routine monitoringhttp://enenews.com/food-products-heavily-contaminated-fukushima-found-30000-pcikg-cesium-cobalt-60-antimony-124-seaweed-green-tea-10000-pcikg-fda-found-fukushima-contamination-food-supply-during-routine-monitoring?utm_source=feedburner&utm_medium=email&utm_campaign=Feed%3A+ENENews+%28Energy+News%29 5 Nov 14
Dr. Robert Metzger, Radiation Safety Engineering, Inc, American Chemical Society 2013 Meeting (emphasis added): Contamination of food imports to the United States in the early days after the Fukushima accident… Contaminated food imports into the US from Japan were first observed in our laboratory on March 30, 2011, withseveral products exceeding the FDA DerivedIntervention Level (DIL) for Cesium and Iodine…
Dr. Metzger’s presentation excerpts, Feb 8, 2014:
- First observed food… contamination was found on March 30… a Sushi import was found to be contaminated with 131I
- April 5, a shipment of Koji powder was… heavily contaminated with 60Co, 124Sb, 131I, 132Te, 134Cs and 137Cs… This, and subsequent samples, exceeded the FDA [DIL]
- By July, the 1-131 had largely decayed away and the primary concern was foods that were known concentrators of some of the isotopes. The sample of the dried green tea leaves below has Cesium concentrations at 1/3 of the FDA DIL [~400 Bq/kg]
- By July, the impact of the water releases were observed in harvests of seaweed… The sample [tested] is about 1/3 of the FDA DIL for Cesium [~400 Bq/kg]
- Published results indicate [FDA] found little to no observable contamination… There are several possible explanations… We were testing samples while the accident was still in progress and therefore saw problems before the FDA started testing seriously
- Imported food products contaminated with fission products… were detected starting in late March… Conscientious importers tested their imported foods and destroyed any food that was found to be contaminated, even at levels well below the FDA DIL
FDA, May 3, 2011: FDA has not detected any longer‐lived radionuclides, such as Cs‐137, in any fish imported from Japan… FDA is performing field examinations… on approximately 40% of the seafood products… shipped to [US]… March 21, 2011 to April 25, 2011, 3,496 examinations were performed. To date, no field examinations have shown levels above background. FDA is also randomly sampling selected entries and subjecting them to laboratory analysis. To date, no gamma‐ray emitting radionuclides of concern have been detected.
FDA, Mar. 2014: FDA has no evidence [of Fukushima] radionuclides… in the US food supply at levels that would pose a public health concern… FDA has tested 1,345 [samples]… two were found to contain detectable levels of Cesium, but… posed no public health concern… 1) Ginger Powder… collected April 2011; 2) Green Tea Bag… collected August 2013… During this time, routine monitoring of the domestic US food supply was also conducted and included roughly 1,500 samples… No contamination was detected during this routine monitoring.
According to an Oct. 30 CBS interview with a professor involved with UC Berkeley-affiliated Kelp Watch: “There’s never zero risk” to someone exposed to radioactive material no matter the level.
460,000,000 Bq/m3 of Cs-134/137 detected from mountain side of Reactor 2 Fukushima Diary, Iori Mochizuki 26 Oct 14 Extremely high level of Cs-134/137 was detected in groundwater taken beside Reactor 2, Tepco announced on 10/24/2014. The specific state of underground is not verified yet.
It is groundwater taken from “sub-drain” located beside Reactor 2. (cf, Strontium-90 detected in potentially discharged water from Reactor 1 and 3
From another sub-drain, 424,000,000 Bq/m3 was detected on 10/22/2014 as well. It was still 321,000,000 Bq/m3 the next day.
These sub-drains are located on the mountain side of Reactor 2, which is not affected by frequently reported groundwater contamination in the seaside of Reactor 2……….http://fukushima-diary.com/2014/10/460000000-bqm3-cs-134137-detected-mountain-side-reactor-2/
Tepco “Almost completed transferring spent fuel from Reactor 4 pool” http://fukushima-diary.com/2014/10/tepco-almost-completed-transferring-spent-fuel-reactor-4-pool/ Iori Mochizuki 26 Oct 14 On 10/19/2014, Tepco announced that they have already completed transferring 1,320 of 1331 spent fuel assemblies from Reactor 4 pool.
The rest of 11 spent fuel assemblies to include 3 damaged assemblies are to be transferred with the next lot planned by the end of November.
Still 180 of 202 new fuel assemblies are remaining in the pool, but Tepco announces the radiation level is low enough for human worker to manually handle.
So far, they have transferred the casks for 61 times.
“Never heard of so much sickness & death in such a short period” says Fukushima evacuee — Writes about strange diseases in young people, deadly tumors and hemorrhages, pets missing hair, child losing all their fingernails, polydactyl baby — Doctor: My friends are dying of cancer, one after another http://enenews.com/never-heard-sickness-death-short-period-fukushima-evacuee-writes-about-strange-diseases-young-people-deadly-tumors-hemorrhages-pets-missing-hair-child-losing-all-fingernails-polydactyl-baby?utm_source=feedburner&utm_medium=email&utm_campaign=Feed%3A+ENENews+%28Energy+News%29
Excerpts from message by a Fukushima evacuee, translated by World Network for Saving Children from Radiation, Oct. 15, 2014: Mrs. Junko Honda… was a successful beauty salon owner who ran two salons… She recently [compiled the] unusual symptoms that she had heard about over the past three years… whose veracity she has been able to ascertain.
“I had never heard of so much sickness and death in such a short period of time” -Honda
Babies, Children, Young Adults
Sep ’11: Child… had nosebleeds very often… many others at school who had nose bleeding
Jun ’12: Child had headaches and nausea since the accident
Apr ’13: Friend of an evacuee gave birth to a polydactyl child [birth defect, extra fingers/toes]
Jul ’13: Younger friend of an evacuee… got ill with cancer
Mar ’14: Relative [in] middle school… got ill with rheumatism [and] medicine doesn’t work
Lymph, Thymus, Thyroid Gland Problems
Apr ’11: I felt strange feeling in my lymph nodes… salon staff also felt the same
Sep ’11: My friend’s father died with a tumor in the lymph glands
Sep ’11: Gynecologist mentioned there was an increase of lymph tumors
Jan ’13: Child of an evacuee [had] unsubsidized thyroid exam… thymus gland was swollen
Jan ’13: Several children… from Fukushima [also diagnosed with swollen] thymus gland
Sep ’13: Child of an evacuee had an unsubsidized thyroid examination… they found many cysts
Oct ’13: Friend, an evacuee age 35, developed thyroid cancer
Mar ’14: Friend of an evacuee, in her 30s, had thyroid surgery
Unusual Skin, Hair, Nail Problems
Apr ’11: Hair of our pets [dog & cat] become uneven because of hair loss to an unusual degree
Apr ’11: Reddish eczema on my daughter’s face [which] stayed until we evacuated
Sep ’11: Hairdresser friend and her sister have suffered dermatologic eczema since the accident
Jun ’12: [Child’s mother] experienced hair loss and… had sparser hair
Jun ’12: All the fingernails of a child evacuee from Sugakawa fell off after the accident
Adults Under Retirement Age
Sep ’11: Customer in her 40s got ill with a disease that cannot renew blood
Sep ’11: Woman in her 30s died from cardiac arrest
Aug ’12: My relative died suddenly of subarachnoid hemorrhage… in his 30s
Dec ’12: Resident in his 30s developed a tumor
Dec ’12: Resident in her 40s developed a tumor and died
Jan ’13: Doctor [said] his friends have been dying with cancer one after another
Mar ’13: Man in his 30s died suddenly
Mar ’13: 5 customers… had funerals of close family in very short period… 3 were in their 50s
Oct ’13: Male friend who was doing decontamination work died suddenly
Agency: Fukushima workers urgently trying “to prevent groundwater from leaking into ocean” — Levels of nuclear waste surge next to sea — Strontium-90 shatters previous record by over 5 Billion Bq/m3 — Now 25 million times EPA limit http://enenews.com/agency-fukushima-workers-urgently-trying-prevent-groundwater-leaking-ocean-levels-nuclear-waste-skyrocket-next-sea-strontium-90-shatters-previous-record-5-billion-bqm3?utm_source=feedburner&utm_medium=email&utm_campaign=Feed%3A+ENENews+%28Energy+News%29
Jiji Press,Oct. 14, 2014: Cesium Level Rises in TEPCO Plant Well — [TEPCO] on Tuesday reported a sharp rise in cesium levels in water collected from an observation well near the sea [on] Monday [with] a record 251,000 becquerels of radioactive cesium per liter, 3.7 times the cesium level… [last] Thursday… Monday’s reading was the highest level… from any of these wells… The samples in question also contained 7.8 million becquerels of beta particle-emitting radioactive substances, such as strontium-90, per liter, also a 3.7-fold increase.ITAR-TASS (Russian News Agency), Oct. 14, 2014 (emphasis added): Highest radiation inground water at Japan’s NPP after nuclear disaster… The highest radiation level was registered in subsoil water taken from a technical well at 1st and 2nd power units at Fukushima-1.., [TEPCO] said on Tuesday. The underground water sample was taken on October 13… Company’s experts said that a surge in radiation was linked with the impact of a typhoon raging in the locality, when heavy rain triggered spread of radiation-contaminated particles in underground water. Now nuclear plant’s specialists are pumping out ground water urgently to prevent it from leaking into the ocean.
Kyodo News, Oct 14, 2014 (Google translation): … record high values of cesium, the influence of the typhoon in Fukushima first nuclear power plant… from the water of the well in the seawall of the Fukushima Daiichi nuclear power plant Units 1 and 2 [cesium is 251,000] becquerels per liter… manganese 54 is… 700… cobalt 60 [is 3,600]… [TEPCO] found under the influence of typhoon No. 18 earlier this month, contaminated water that has accumulated in the piping has been spreading. Both record high values in groundwater…
Note that the most recent stontium-90 test results for well No. 1-6 published by Tepco on Oct. 1show that levels of Sr-90 are virtually equal to Gross Beta. This means the Oct. 13 Sr-90 levels are near 7,800,000 Bq/L — 26,000,000 times the EPA limit for Sr-90 in water (0.3 Bq/L).
Plan to remove cover over damaged Fukushima reactor draws concern, Asahi Shimbun October 16, 2014 Amid local concerns of the further spread of radioactive materials, Tokyo Electric Power Co. announced plans to start dismantling the canopy installed over the destroyed Fukushima No. 1 nuclear plant’s No. 1 reactor building.
The operation, announced by TEPCO on Oct. 15, will remove the cover that was erected in October 2011 over the building to prevent radioactive materials from entering the atmosphere……..
The process, which will begin Oct. 22, is a necessary step in removing the vast amounts of highly contaminated debris, rubble and dust that remain inside the building.
However, as the work to clear debris at the plant’s No. 3 reactor building in August 2013 spread radioactive materials in the area, the Fukushima prefectural government and experts are calling for careful measures to be taken in the dismantling………..
n the removal, the utility will drill 48 holes in the roof of the cover, each 30-centimeter squares. From the holes, synthetic resin will be sprayed as anti-scattering agents inside the building to minimize the possibilities of radioactive materials rising.
Starting from the end of this month, two of the six roof panels will be removed to install a camera to monitor the status of the debris inside.
Once the condition of the rubble is better understood, a specific schedule for the dismantling process will be created. The utility plans to begin major operations in March 2015 in hopes of starting the removal of debris in fiscal 2016. http://ajw.asahi.com/article/0311disaster/fukushima/AJ201410160049
Highest radiation in ground water at Japan’s NPP after nuclear disaster http://en.itar-tass.com/non-political/75421 October 14, The caesium isotope content has made 251,000 Becquerel (Bq) per liter in subsoil water taken from a technical well at 1st and 2nd power units at Fukushima-1 nuclear power plant OKYO, October 14. /TASS/. The highest radiation level was registered in subsoil water taken from a technical well at 1st and 2nd power units at Fukushima-1 nuclear power plant after the nuclear disaster in Japan in 2011, Tokyo Electric Power Company operating the nuclear plant said on Tuesday. The underground water sample was taken on October 13.
The caesium isotope content has made 251,000 Becquerel (Bq) per liter. Japan has set the highest permissible level of these elements for water split in the ocean at 30 Bq.
Company’s experts said that a surge in radiation was linked with the impact of a typhoon raging in the locality, when heavy rain triggered spread of radiation-contaminated particles in underground water. Now nuclear plant’s specialists are pumping out ground water urgently to prevent it from leaking into the ocean.
Officials: Typhoon caused significant increase in radioactive releases from Fukushima — Record levels of ‘highly toxic’ nuclear material found in ground outside reactor — Among the most poisonous substances at plant http://enenews.com/officials-typhoon-caused-significant-increase-radioactive-releases-fukushima-record-levels-highly-toxic-nuclear-material-found-ground-reactor-among-poisonous-substances-plant?utm_source=feedburner&utm_medium=email&utm_campaign=Feed%3A+ENENews+%28Energy+News%29 10 Oct 14
Radiological Fact Sheet; [It’s] possible to dissolve Co-60… making it a potential inhalation or ingestion hazard… Inhaled Co-60 contamination can give high radiation dose to lungs…Ingested insoluble Co-60 can give high radiation dose to the intestinal tract, while soluble Co-60 distributes fairly evenly through the body… “hot” particles can give very high dose locally, in area of particle… 45% of Co-60 that enters the blood is evenly distributed through the body…
Michael Maqua, nuclear expert and head of plant engineering at GRS, Oct. 10, 2014: Over the past days, the concentration of radioactive substances in the groundwater has increased significantly at some of the plant’s measuring points and, according to TEPCO, this was caused by the recent heavy rains… Contaminated water… is in fact constantly reaching sea water… caused, for example, by leakages in building structures
Fukushima Worker: “All sorts of troubles going on in plant”; Officials won’t tell public what really happens — People should worry, it’s not under control — Employees wear disguises over fear of retaliation — Reporter: Tour of plant “was very strange… feels completely dead… not many people” (VIDEO) http://enenews.com/fukushima-worker-all-sorts-troubles-going-inside-plant-officials-arent-disclosing-problems-public-im-concerned-safety-employees-wear-disguises-fear-retaliation-plant-control-people-be-worried-vi?utm_source=feedburner&utm_medium=email&utm_campaign=Feed%3A+ENENews+%28Energy+News%29
NHK, Sept. 24, 2014 (at 2:15 in): [A Fukushima Daiichi worker’s attorney] warns that the current system could endanger the entire decommissioning process… “Tepco should be held accountable for turning a blind eye. It needs to improve labor conditions, otherwise the situation will make it impossible to secure enough workers to deal with the nuclear accident.” >>Watch the video here
The Guardian, Sept. 9, 2014 (emphasis added):Fukushima fallout continues… [There’s an] unprecedented attempt by four Fukushima Daiichi workers to sue the utility for unpaid wages… [T]he four men… wore masks in court for fear of reprisals from their employers… “A year ago, the prime minister told the world that Fukushima was under control. But that’s not the case,” Tsuguo Hirota told Reuters… “It’s becoming a place for amateurs only, and that has to worry anyone who lives near the plant.”… “My health could suffer… I believe there are many people who can’t speak out about this kind of problem,” one of the workers told public broadcaster NHK.
Time Magazine correspondent Hannah Beech, Sept. 7, 2014: Just to get into the plant it –again — it’s like a Hollywood movie… What was very strange about walking into this place is that it feels completely dead. You don’t see that many people moving around. And those people that you do see, there’s not a palpable sense of urgency, but you realize that the work that they’re doing is so important. And they may not be getting the full of backing that they should to be able to do this. >> Full interview here
NPR, March 11, 2014: About 100 out of the 4,000 people working in the plant every day are TEPCO employees. The rest are subcontractors… Workers [are barred from] speaking to the media… I met a TEPCO worker who was on the job when the quake and tsunami hit… and talked in his car… on the condition that we not identify him and disguise his voice. He says it’s well known at the plant that shoddy work is being done… Many problems inside the Fukushima plant go unreported… The worker says that the Japanese government now needs to step in and guarantee the welfare and safety of all the workers…
TEPCO employee at Fukushima Daiichi (at 2:45 in): I’m concerned about my safety… There are things they feel they don’t have to disclose. There are all sorts of troubles going oninside the plant.
Full interview with the anonymous Fukushima worker here http://enenews.com/fukushima-worker-all-sorts-troubles-going-inside-plant-officials-arent-disclosing-problems-public-im-concerned-safety-employees-wear-disguises-fear-retaliation-plant-control-people-be-worried-vi?utm_source=feedburner&utm_medium=email&utm_campaign=Feed%3A+ENENews+%28Energy+News%29
Tepco to give up the preceding frozen wall and directly fill the trenches with cement instead http://fukushima-diary.com/2014/09/tepco-give-preceding-frozen-wall-directly-fill-trenches-cement-instead/Tepco is going to give up the preceding water wall project and simply pour cement instead, they announced in the press conference of 9/22/2014. Extremely highly contaminated water is “retained” in the underground trenches, which are connected to the plant buildings.
Though Tepco is denying this, there is a possibility that these trenches are also severely damaged by the continuous explosions and earthquake, keep letting the coolant water leak underground and sea directly from plant buildings. Tepco was attempting to separate the plant buildings and trenches by frozen water wall in order to pump up the extrenely highly contaminated water retained in the trenches.
However the frozen water wall has never been completed.
Instead of the frozen water wall, Tepco announced they developed the special type of cement to fill the entire trenches.In the simple math, if they pour cement, the same volume of contaminated water would be pushed out of the trenches. However Tepco states it would not leak out because they would pump up the contaminated water as they pour cement.
Because the trenches and the plant buildings are connected, they would end up having to pump up the same volume water as the entire capacity of the trenches. Tepco hasn’t announced if they prepare the enough contaminated water storage. http://www.tepco.co.jp/tepconews/library/archive-j.html
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