Nuclear Expert: We’ve detected a lot of cases “gargantuanism” in Fukushima — Reporter: “Gigantic beet… it’s almost as big as the upper part of man trying to hold it” — “They’re seeing more and more of this… people are reporting more and more of these abnormalities” (PHOTOS & VIDEO)
Linda Moulton Howe, reporter: “Remember when [Arnie Gundersen] was referencing the gargantuanism — it appears to be increasing, as he said, in the third generation of plants. And who knows what’s going to happen in the fourth, fifth, and so forth. The trauma of seeing these gigantic… there is a photograph of this, what they call ‘gargantuan strawberry’ in Fukushima Prefecture… [There] is a gigantic beet — it is almost as big as the upper part of the man trying to hold the big beet. And then [there] is something that several people have reported in different parts of Fukushima — where trees of, in this case, it’s a photograph of [leaves] from two species of maple. And it shows a contrast from what a normal leaf should look like, to one that is, gosh, three times bigger. And they’re seeing more and more of this — people are reporting more and more of these abnormalities in the trees in the surroundings.”
Linda Howe’s website ‘Earthfiles’, Apr 1, 2016: PHOTO: Gargantuan beet in Fukushima Prefecture after March 11, 2011; PHOTO: Gargantuan strawberry in Fukushima Prefecture after March 11, 2011; PHOTO: Enlarged maple leaves from two trees of same species
Cemetery full of dead babies missing brains next to US nuclear site — Funeral Director: Almost all infants we have died the same way… “that’s pretty much all I see on death certificates” — Few miles from “most contaminated place in hemisphere” — “One of largest documented anencephaly clusters in US history” (VIDEO)
Published: March 23rd, 2016 at 10:04 am ET
Seattle Times, updated Jan 28, 2016 (emphasis added): How the state is missing chances to find deadly birth defect’s cause… at least 40 other mothers have lost babies to [anencephaly, which result in missing large parts of the brain] in Yakima, Benton and Franklin counties since 2010… one of the largest documented clusters of anencephaly in U.S. history… “Something’s going on and someone needs to tell us,” said [mother Sally] Garcia… Dr. Lisa Galbraith was one of the doctors… In Prosser, the obstetrician oversaw care of Garcia’s pregnancy and others affected by the disorder… “I had a total of four or five babies with anencephaly over the course of two years,” recalled Galbraith… the rate of anencephaly was much higher [than US averages]… Washington health officials… have collected no blood samples, performed no genetic tests and conducted no examination of water, soil… and have no plans to do so… In Texas, just three babies with anencephaly sparked enough outrage to overhaul the state’s birth-defects reporting system.
Seattle Times video transcript – Carlen Majnarich, funeral director: “It’s tragic… It just seems like that’s pretty much all I see on the death certificate is the same diagnosis. And nobody seems to know why. We average close to 100 families a year here in Prosser [a few miles from Hanford]. Almost all the infants that we have have died of anencephaly. It’s just what do you say?”… Sally Garcia (mother who lost her baby to anencephaly): “All these on this side [of the cemetery] are all babies… all babies, starting from right there.”
The Legal Examiner, Dec 31, 2015: [T]he strange eruption of anencephaly cases, which occurs in Washington at a rate almost 5 times as high as the national average, has highlighted a number of government policies that may actually conceal these sort of birth defect “clusters,” rather than help investigate them.
KVEW-TV, Mar 4, 2016: As of November 2015 cases of anencephaly have continued to increase with the current rate at 9.5 per 10,000 live births.
Sara Barron, MS, BSN – American Journal of Nursing, Mar 2016: In the spring of 2012 two babies without brains were born within weeks of each other at the rural hospital in Washington State where I was working… I was stunned when the delivering physician said another patient was expecting the same outcome. After speaking with colleagues at neighboring hospitals, I learned that two other babies with anencephaly had recently been born in the area. In over 30 years of nursing, I had seen only two cases of anencephaly prior to these. I called the Washington State Department of Health and reported a birth defect cluster… RISK FACTORS… Radiation exposure. Popular media and blogs have often linked the Washington State NTD cluster to the Hanford Nuclear Reservation in Benton County, Washington. Although leaks from nuclear power plants have been associated with a higher rate of anencephaly and other NTDs, Washington State Department of Health investigators point out that the three counties with the highest prevalence of NTDs were both upwind and upriver of the Hanford site, making the nuclear plant an unlikely cause of the 2012 cluster.
Triple meltdowns remain out of control causing up to 66,000 excess cancers say two new reports while Americans feast on fishy Pacific seafoodSnow squalls brought the temperature down to a frigid 15.8 degrees Fahrenheit on the trawler January 20. The sea pitched in a rough chop.
Cold Japanese fisherman plied the Pacific Ocean off the east coast of Japan with three klieg lights at 2:30 in the morning. They were the only vessel around.
These weren’t just any waters the men fished in the freezing winds. The water was ‘hot’ with radiation. But the fish were plentiful and if they didn’t pass rad testing, they could be sold overseas.
The vessel bobbed in the choppy waters several hundred yards away from the still stricken, still leaking, still out of control triple nuclear reactors in full meltdown at the Fukushima Dai-ichi nuclear power plant. Gone fishing in the hot zone.
“Here’s a screenshot I took on 1/20/2016 at 2:36 [Japanese Standard Time] via the TBS Webcam,” says Sierra Nevada musician Chas Haws in a Radiation Conversation comment on EnviroReporter.com not long after taking it earlier this year. “It looks like a very large fishing boat with its trolling lights on. The thought that somebody somewhere could unknowingly consume those fish is a very scary thought. So scary I can’t believe any human being in their right mind would do such a thing.”
Exactly five years after the beginning of one of the two worst nuclear disasters in history, people are doing just that, eating fish from the seas off of Fukushima. If the catch is too radioactive under loose Japanese regulations, it’s sent to seafood consumers in the United States where the allowable radiation limits in fish are even more lax.Americans have been eating meltdowns-contaminated food for half a decade, as EnviroReporter.com’s Fukushima investigation shows. Radioactive cesium (caesium) is rising in fish caught off of British Columbia, the region (including Alaska and the Pacific Northwest) that supplies America’s ravenous seafood consumption.
Two new studies detail the extent of the contamination in Japan, its cancerous impact upon the population and continued Pacific contamination. Government testing has shown sea creatures high in Fukushima radionuclides caught of West Coast of the U.S. and Canada. Yet judging from the robust U.S. consumption of crashing seafood stocks in the Pacific, which have repeatedly tested positive for Fukushima radionuclides, America has ‘gone fishing’ too in the gastronomical sense.
Gone fishing. Most Americans would fit in this category when it comes to the Fukushima meltdowns and their effects. Meltdown fatigue, complicated science and an assortment of pro-nuclear naysayers comparing Fukushima’s radiation with eating bananas has understandably numbed great numbers of people to their peril.
The Long and Ionizing Road
EnviroReporter.com’s 2014 anniversary piece Fukushima – The Perfect Crime? reported that 441 tons of highly radioactive water was sluicing into the Pacific from the stricken cores every day. According to a new report by Physicians for Social Responsibility (PSR) and International Physicians for the Prevention of Nuclear War (IPPNW) called 5 Years Living With Fukushima, that number is now 300 tons per day.
The reduction in toxic water released is the good news (even though more than 500,000 thousand tons of radioactive waste water has now gone into the Pacific since 2011). The bad news is up to 66,000 “excess cancers” will hit the Fukushima area because of the meltdowns, according to the report. Workers who fought to save the reactors and their comrades paid the highest price for their valor.
“More than 25,000 cleanup and rescue workers received the highest radiation dose and risked their health, while preventing a deterioration of the situation at the power plant site,” the report says. “If data supplied by the operator TEPCO [plant owner Tokyo Electric Power Company] is to be believed, around 100 workers are expected to contract cancer due to excess radiation, and 50 percent of these will be fatal. The real dose levels, however, are most likely several times higher, as the operator has had no qualms in manipulating the data to avoid claims for damages – from hiring unregistered temporary employees to tampering with radiation dosimeters and even crude forgery.”Even five years out, no one is allowed to live within 12.5 miles of stricken reactors. The hardships experienced by the Japanese people who had to flee Fukushima is well documented in the new short film Five Years On – Voices of Fukushima. About 180,000 remain displaced.
Coinciding with the PSR/IPPNW report launch March 9, Robert Alvarez, a senior scholar specializing in nuclear disarmament, environmental, and energy policies, Institute for Public Studies, and former senior policy advisor, US Department of Energy, issued a statement highlighting their tragedy.
“Radioactive fallout from the reactors has created de faco ‘sacrifice zones’ where human habitation will no longer be possible well into the future,” Alvarez said. “In November 2011, the Japanese Science Ministry reported that long-lived radioactive cesium had contaminated 11,580 square miles (30,000 sq km) of the land surface of Japan. Some 4,500 square miles – an area almost the size of Connecticut – was found to have radiation levels that exceeded Japan’s allowable exposure rate.”
Some cries for justice are finally being heard in Japan. Three top TEPCO executives including the chairman Tsunehisa Katsumata, 75, and two former executive vice presidents were indicted February 29 for professional negligence resulting in injury and death. It would seem unlikely that the judgement of these men will happen very quickly since it took five years to call them to task.
Cleaning up the mess in Fukushima won’t happen very quickly either, says TEPCO. The company says it needs 50 years to contain and remediate the reactors with the missing, oozing corium. It claims to have completed 10 percent of that work.
What appears to be a Sisyphean task to restore Fukushima is confirmed in the new March 4 Greenpeace report “Radiation Reloaded: Ecological Impacts of the Fukushima Daiichi Nuclear Accident 5 years later.” The comprehensive study found that “The current approach of Japanese authorities to forest decontamination is the removal of leaf litter, soil, and understory plants in 20 meter strips along the roads and around homes that are surrounded by forests. In terms of decontaminating the large areas of Fukushima this approach is futile. Over seventy percent of Fukushima prefecture is forested, which is not possible to decontaminate.”
Greenpeace found that even if there is decontamination, it may subsequently be undone. “Mountain streams and rivers transport radioactive particulates and contaminated forest litter downstream, potentially contaminating areas that did not receive fallout, recontaminating ‘decontaminated’ areas, or discharging radioactivity to estuaries and marine ecosystems,” the report said.
Complicating matters even more is hot mist getting into everything, literally. “Both caesium-bearing particulates as well as vaporized, water-soluble radiocaesium were released,” the report says. “Water-soluble caesium, which came down as wet deposition with precipitation and fog, is readily absorbed via bark and leaves into the internal tissues of trees. Hot particles appear to weather and leach caesium under natural conditions. In addition, radiocaesium and 90Sr can be absorbed via root systems. Once absorbed into the internal tissues of trees, 134Cs and 137Cs are translocated with nutrient flows, concentrating in rapidly growing tissues such as new foliar structures, flowers and pollen. Japanese cedar pollen in Fukushima forests appears to have high concentrations of radiocaesium.”Radioactive fog, flowers and pollen? Yes, and hot honey too if the Fukushima sweet stuff soaks up the cesium like Croatian honey did from Chernobyl fallout adding fission to the flowers. It certainly has the potential to make even cherry tree festivals dangerous in the land of the rising radiation.
Naturally, it’s the perfect place to have the 2020 summer Olympics, i.e. Tokyo’s Radiation Olympics. If the swimming events are staged in Fukushima’s rivers, caution would be well advised if Greenpeace’s report is accurate.
“According to radiocaesium discharge projections for the century between 2011 and 2111, the major rivers whose catchments are primarily in Fukushima prefecture (the Abukuma, Arakawa, Naka, Agano, and Tadami rivers) could discharge as much caesium into the Pacific Ocean as is hemorrhaging from the Fukushima Daiichi plant itself,” the report says. “The Abukuma River alone is projected to discharge 111 TBq [Terabecquerel] of 137Cs [cesium-137] and 44 TBq of 134Cs [cesium-134], even with current rates of “decontamination”, in the century after the disaster.”
That is a lot of goo. All of it is headed for the Pacific Ocean. What goes into the water in Fukushima eventually makes its way on the Kuroshio Current to North American shores.
Just Say Glow
Many of the thousands of tests EnviroReporter.com has conducted and reported on since 2011 show Fukushima contamination in fish consumed in California and across America and Canada. Those tests keep coming in and include a variety of animals that have shown signs of Fukushima-related radionuclides in them.
In the summer of 2014, National Oceanic and Atmospheric Administration (NOAA) Fisheries division found Fuku rads in northern fur seals. “We detected very small amounts of Fukushima-derived radioactive material in the seal tissue,” the NOAA report says. “We didn’t find any detectable radiation in the marine debris. The two [graph] peaks … show radiation energy for two isotopes of Cesium; 134Cs and 137Cs detected in fur seal muscle.”
Cesium-134 is a Fukushima signature radioisotope because it’s half-life of 2.07 years precludes anything else from being the source like nuclear fallout from atmospheric testing decades ago. It usually is found in tandem with cesium-137 as it indeed was in the seal.
Both of these isotopes of cesium are extremely dangerous with the shorter the half-life, the more intense a rate of ionization. That’s what makes cesium-134 such a perilous poison. NOAA also revealed that it tested water itself positive for cesium-134. Albacore tuna from the East Pacific Ocean, a foodie favorite, came in with 9.6 times higher in cesium-134 than the fur seal reading.“Estimated U.S. per capita consumption of fish and shellfish was 14.6 pounds (edible meat) in 2014,” according to recent NOAA data. “This total was essentially unchanged from the 14.5 pounds consumed in 2013.”
The U.S. fish feast of 2014 weighed in at 4,743,025 tons. Over 72 percent of that haul came from the Pacific with most of that harvested off of Alaska. That’s where so many Fukushima-related isotopes have been measured in all manner of flora and fauna over the last five years.
Foodies gone fishing from Fukushima who just have to have their seafood yet who care about radiation bioaccumulation can take heart. There are fresh water fish and seafood from the Atlantic Ocean. But eating anything out of the Pacific is lunched.
“I know humans do some pretty insanely stupid things, so I wonder,” Haws says of his Fukushima fishing screen capture. “Why else would those fish trolling lights be on… hmm? Did they unload their hefty catch at some far away port and say it came from somewhere else? It would be a crime beyond description. There are no fish police. At least not at 2:30 in the morning just east of ongoing TRIPLE MELTDOWNS.”
The image of that trawler fishing in the freezing night in the fission-rich waters off of Fukushima Dai-chi is truly disturbing. On whose plates will that catch land?
When it comes to Fukushima, and now five years of radioactive madness, most of America – and the world, seems to have simply gone fishing.
Official Report: West Coast hit with 220,000,000 atoms per liter of Iodine-129 in rain after Fukushima — 15 Million year half-life — Detected in aquifer that supplies drinking water to large number of people — “Transported rapidly” to Canada and US — Elevated levels continued for many months
Published: February 17th, 2016 at 8:58 am ET
Matt Herod, Univ, of Ottawa Ph.D Candidate, Dec 21, 2015 (emphasis added): A recently published paper (by myself and colleagues from uOttawa and Environment Canada) investigates… [Iodine-129] which was released by the Fukushima-Daichii [sic] Nuclear Accident… Within 6 days of the FDNA 129I concentrations in Vancouver precipitation increased 5-15 times… sampling of groundwater revealed slight increases in 129I… The results in rain show an increase in 129I concentrations of up to 220 million atoms/L… 129I anomalies [in groundwater wells], which occurred exactly when the recharge age predicted they would, suggests that some of the 129I deposited by Fukushima was reaching the wells… [P]ulses of elevated 129I occurred for another several months. Elevated 129I concentrations were measured in two wells… indicating that 129I from Fukushima can be traced into groundwater… [M]odeling has shown that 129I can be rapidly transported to the water table…
Scientists from Univ. of Ottawa’s Dept. of Earth Science and Environment Canada (Government of Canada), Dec 2015: The atmospheric transport of iodine-129 from Fukushima to British Columbia, Canada and its deposition and transport into groundwater
The Fukushima-Daiichi nuclear accident (FDNA) released iodine-129 (15.7 million year half-life)… The mean pre-accident 129I concentration in rain was [31,000,000 atoms/L]… following the FDNA, 129I values increased to [211,000,000 atoms/L]… [P]ulses of elevated 129I continued for several months…
The 129I in shallow… groundwater showed measurable variability through March 2013 with an average of [3,200,000 atoms/L]… coincident with modeled travel times…
Radionuclides released from the FDNA have been detected across the globe… [R]eleases of 129I and 131I… travel great distances…
The Abbotsford-Sumas Aquifer… spans the Canada–U.S. border between [B.C., Canada and Washington, US] and supplies ∼120,000 people with drinking water…
A pulse of 129I in precipitation with maximum concentrations of [211,000,000 atoms/L] in Vancouver and [221,000,000 atoms/L] at Saturna Island was observed 6 days following the FDNA. A value of [311,000,000 atoms/L] was also measured during the first week of July…
The high 129I concentrations while the FDNA was ongoing are attributed to the rapid trans-Pacific transport of 129I from Fukushima… This response in 129I concentrations shows that radionuclides from Fukushima were transported rapidly from Japan to the west coast of Canada and the US… [Sampling from Washington State], which is a composite of rainfall events spanning 15 March 2011 to 16 April 2011 shows a significantly elevated 129I concentration of [95,000,000 atoms/L]…
There was a spike in 129I concentration observed in the precipitation sample from the period of 1 July 2011 to 8 July 2011 [which] rose to [311,000,000 atoms/L]… a substantially higher concentration than any other sample… As monitoring at Fukushima detected no pulse of 129I in precipitation in July… this spike is likely due to a… nuclear fuel reprocessing facility. Modeling of the air parcel back trajectories… for the sampling period shows air mass trajectories from Hawaii, north Japan, and Russia…
The initial increase in 129I concentration at the water table appeared within ∼95 days, with a maximum concentration of [10,500,000 atoms/L]…
In the model cases, 129I reached the water table very rapidly…
Groundwater 129I concentrations in two nearby wells showed minor anomalies over the sampling period which could be due to rapid infiltration of the FDNA atmospheric 129I signal… [M]odeling shows that it was possible for a component of the 129I deposited by the FDNA to be conducted rapidly from the ground surface to the water table… We conclude that it is possible that a fraction of 129I from the FDNA is transported conservatively in this aquifer via preferential flow paths to the water table…
See also: Official in Canada advises public not to drink rainwater coming from Fukushima http://enenews.com/canada-local-official-advising-residents-not-to-drink-rainwater-after-tests-find-increasing-radioactivity-govt-pressuring-him-to-stop-testing
And: Rain with 20,000,000 particles of Iodine-131 per liter fell on US (VIDEO)
It kills me. They will die and go to hell before they admit that the Pacific Ocean has died, and it is just a matter of time for the rest of life on earth!
Baby whales dying along West Coast from unknown cause — Gov’t experts request rush on tissue testing — Scientist: “May have been born weak” — Carcasses washing up on beaches in US, Canada, Mexico — Highly endangered whale “died from abnormal blood clot formations in heart and lungs” (VIDEO)
Canadian Press, Dec 30, 2015 (emphasis added): A female orca calf has been found dead on the west coast of Vancouver Island. Paul Cottrell of Fisheries and Oceans Canada said a surfer spotted the dead whale washed up on Mussel Beach near Ucluelet on Dec. 23… a necropsy was conducted on Christmas Day. Scientists are still awaiting results of tissue-sample testing and a cause of death is not yet known… “All our populations of killer whales are at risk, so it’s a shame regardless of which population it’s from,” he said. “You hate to lose a calf out of these populations.” Scientists have requested a rush on the tissue testing… He said it’s believed the calf was about two months old… Cottrell noted it was especially unfortunate that the calf was female because of their value in contributing to the population.
Weekly Alibi (New Mexico), Dec 23, 2015: I rented a blue Dodge Neon in Chula Vista and decided to drive as far down the Pacific coast as a week would permit… I stopped in Ensenda and got a stamp for my passport… That night I stayed at a little ranch by the sea… The beaches were empty. I found a small dead whale on the shore one day.
NBC San Diego, Dec 11, 2015: Lifeguards closed off beach access to Del Mar Shores Friday morning after a dead, newborn gray whale washed ashore, officials confirmed… According to Jim Gilpatrick with the NOAA Fisheries, the calf is about three to four weeks old… Biologists are not sure why the whale died. There was no sign of foul play or fishing lines, and Gilpatrick speculated the animal may have been born weak. They took samples to try to determine the cause death.
KHON, Dec 18, 2015: Rodney Kuahiwinui sighted a dead whale at South Point… marine mammal experts were able to identify the animal as a highly endangered false killer whale… Scientists were able to determine [it] died from abnormal blood clot formations in the heart and lungs… Only three Hawaiian false killer whales have been reported stranded in the past 18 years. “With less than 200 individuals alive today, every piece of information is critical,” says [Dr. Kristi West, head of Hawaii Pacific University’s stranding program].
Mass panic as radioactive cloud pours from nuclear plant — Radiation levels reportedly spike near reactor after emergency shutdown — Traffic jams as people evacuate area — “Everyone got very worried and rushed to get iodine” (PHOTOS)
Express, Dec 21, 2015 (emphasis added): Russians flee Chernobyl-style plant over fears of radioactive leak — Russians took iodine and caused traffic jams… amid fears officials were covering up a radioactive leak. The panic followed the emergence of pictures showing a cloud of vapour pouring from Leningrad Nuclear Power Plant, some 50 miles from St Petersburg. The authorities insisted that the was no radioactive leakage… but people did not believe the “no danger” claim. Radio Svoboda reported that in the wake of the incident on Friday locals in Sosnovy Bor started withdrawing money from their credit cards. They said locals were in panic mode despite statements from officials that the radiation level was normal… One local said: “Everyone got very worried and rushed to get iodine.”… There were traffic jams as residents left the area and headed for St Petersburg… The plant manager (not pictured) insists there are no reasons for evacuation. [Oleg Bodrov, chairman of Green World ecological group] said: “They know well that the officials’ first task is to say all is normal but not to report about danger, even if there is one. All those who understand a bit about nuclear energy know that it was an attempt to mistake the wish for the reality… this vapour is surely radioactive… Bodrov called for medical checks for staff at the power plant. Interfax reported that a special commission was working at the nuclear station aiming to find out the reasons for the emission.
Daily Mail photo captions: A cloud of vapour pouring out of Leningrad Nuclear Power Plant in St Petersburg caused mass panic… Russian radio reported St Petersburg residents rushing out to buy iodine to protect against radiation poisoning after spotting the steam flowing out of the power station… The billowing vapour spreads across buildings
QHA, Dec 19, 2015: Accident occurred at Leningrad Nuclear Power Plant (PHOTO) — Eyewitnesses of the accident and the inhabitants of the Russia’s northern capital are scared. The second unit was stopped at the station… The accident occurred at the second power unit when a pipe with steam cracked in turbine hall yesterday. The steam filled the room, and leaked beyond the power plant. The employees of the Leningrad Nuclear Power Plant (LNPP) had to go home… According to specialists, the release was radioactive, because the waste steam entered the so-called loop reactor coolant. However, the population was encouraged not to panic.
Baltic Newsletter of the Green World, Dec 20, 2015: An emergency stop of the second power unit of Leningrad Nuclear Power Plant took place… The reason for the stop and cooling of the reactor was a sudden leak of radioactive steam from a faulty pipe in one of the rooms of the turbine shop… During the cooling – down step, the reactor steam was ejected through the pipe into the environment. A south – southeast wind of 5 meters per second (not typical for this area) blew the radioactive steam toward the Gulf of Finland… Thus, the five millionth city of St. Petersburg, located 40 km east of the Leningrad Nuclear Power Plant was fortunate this time. According to some sources , the radiation level rose a few times higher than the background radiation only in the NPP area.
Watch video from the Director of Leningrad NPP here
Officials now say Fukushima reactor with MOX fuel “leaked directly from containment” — TV: Contamination of environment was due to “failure of vessel” — Experts: This has caused additional worries because MOX is more “radioactively aggressive” due to plutonium content (VIDEO)
NHK, Dec 17, 2015 (emphasis added): [TEPCO] says radioactive fallout that polluted the environment in mid-March of 2011 was likely caused by a leak directly from a containment vessel of the facility’s No.3 reactor. Officials… on Thursday reported their latest findings on what happened at the plant… They concluded that radioactive contamination of the environment between the night of March 14th and the 16th was likely caused not by the vent operations but failure of the vessel. They said the vessel likely lost airtightness due to heat from nuclear fuel, leading to the direct release of radioactive substances into the environment.
NHK transcript, Dec 17, 2015: [TEPCO] said the substances in one of the reactors probably leaked directly from the containment vessel… They suspect the heat of fuel caused the containment vessel to lose airtightness.
TEPCO, Dec 17, 2015: A significant release of steam from the night of March 14 to March 16, 2011 is believed to have been responsible for contamination to the surrounding environment of Fukushima Daiichi. The investigation reports that the primary containment vessels in Units 2 and 3 did likely lose leakage resistant properties by March 15 and had been in a condition where radioactive materials could leak directly from them. It is therefore presumed the environmental contamination outside Fukushima Daiichi during that period was caused by steam leakage directly from the primary containment vessels and not from the vent.
TEPCO, Dec 17, 2015: Leakage and release of a large amount of steam from the Unit 3 Reactor Building — The PCVs of Units 2 & 3 lost the airtightness in the end, which is confirmed by the fact that steam escaped from the Reactor Buildings. Analysis of the behavior of the pressure in the PCVs and the situation at the time of the accident has revealed that the environmental contamination from the night of March 14 to March 16 occurred by steam leakage together with radioactive materials directly from the PCVs not from the vent.
UBS Investment Research (via WikiLeaks), Apr 2011: Of particular concern was Unit 3, because, since September 2010, the plant had been fueled with mixed oxide, or MOx… Use of MOx heightened fuel risk — Fukushima Daiichi Unit 3 was fuelled with mixed oxide (MOx), which is about 93% uranium and 7% plutonium. This has caused additional worries for TEPCO and the government, because MOx is more radioactively aggressive. We think national nuclear safety reviews might consider restrictions on its use.