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Typhoon Lan Targets Never-Ending Fukushima Nuclear Disaster Site Area With High Waves, Wind, Rains

1.jpgTyphoon Lan and Japan Nuclear Power Stations.

“Powerful typhoon drenches Japan, soaks voters as they trudge to polls
Posted:Sun, 22 Oct 2017 03:39:46 -0400
TOKYO (Reuters) – Tens of thousands across Japan were advised to evacuate, hundreds of flights were canceled and rail services disrupted as heavy rain and wind lashed a wide swathe of Japan on Sunday, a national election day, as a powerful typhoon neared“.
Apparently the Fukushima area may get 10 meters (32 ft) waves.
Sendai Nuclear Power Station and Ikata are apparently back in operation: Hamaoka and others not operating almost certainly have spent fuel still onsite, which still requires energy for cooling.
Source: Japan Meteorological Agency website



October 22, 2017 Posted by | Japan | , , , | Leave a comment

Record-breaking typhoon moves northeast to northern Japan


Typhoon No. 18, packing record-setting winds, was creeping northeast and is expected to hit the Hokuriku and Tohoku regions starting on the afternoon of Oct. 5.

Known as Typhoon Chaba outside Japan, the storm was 120 kilometers north of Tsushima island and moving at a speed of 45 kph as of noon. It could make landfall later in the day or early on Oct. 6.

Wide areas of western and eastern Japan are expected to see heavy rain through Oct. 5. Some areas could be drenched with more than 50 millimeters of rain per hour.

Expected rainfall in the 24 hours until the morning of Oct. 6 is 200 mm on Shikoku island and in the Kinki region, 180 mm in northern Kyushu, and 150 mm in southern Kyushu as well as the Tokai, Hokuriku and Kanto-Koshin regions.

The typhoon cut through waters west of the Okinawa island chain and headed north on Oct. 4.

In the early hours of that day, a maximum wind speed of 173.2 kph was recorded on Kumejima, an island west of the main Okinawa island.

It was the strongest wind recorded on the island since official typhoon observations began in 1951.

October 5, 2016 Posted by | Japan | , | Leave a comment

Heavy rains stall assessment of frozen wall at Fukushima plant

ice wall cooling equipment.jpg

The equipment that cools coolant for the ice wall at the Fukushima No. 1 nuclear power plant

Tokyo Electric Power Co. reported a delay in the underground ice wall project at its Fukushima No. 1 nuclear power plant, citing the stalled assessment of the structure due to heavy rains from a recent typhoon.

The utility reported the delay at a review meeting with the Nuclear Regulation Authority, the government’s nuclear watchdog, on Sept. 28. TEPCO initially planned to assess the effectiveness of the ice wall by the end of this month.

According to TEPCO, the volume of groundwater pumped up in areas on the sea side of the facility was supposed to have dropped by now if the ice wall functioned properly.

But the company acknowledged this had not happened.

TEPCO had sought NRA approval to freeze a section of the ice wall facing the mountainside to enhance the effect of blocking groundwater, but it did not get the go-ahead.

It does not make sense that the company sought approval to freeze the area facing the mountainside, just because the ice wall on the sea side did not go well,” said Toyoshi Fuketa, a commissioner of the NRA, told the meeting.

The groundwater level in the sea side portion outside the ice wall reached the surface on and off between Sept. 20 and Sept. 23 when the plant was struck by torrential rain as a result of Typhoon No. 16.

TEPCO said rainwater flowed into the sea, rather than seeping into the ground, because of the higher groundwater level.

Radioactive cesium in samples taken from the sea nearby measured a record high 95 becquerels per 1 liter.

According to the company, 0.8 percent of 5,800 or so observation spots set up on the sea side section of the ice wall showed that the soil has not been entirely frozen.

TEPCO officials believe that groundwater penetrated gaps in the ice wall before pushing up the groundwater level in the area downstream near the sea.

The frozen soil wall was built around the No. 1 through No. 4 reactor buildings. The government poured 35 billion yen ($350 million) into the project.

The objective was to block groundwater from mixing with contaminated water in the basements of the reactor and other buildings.

TEPCO started freezing soil in late March, but not all of the soil turned into ice, allowing a huge volume of groundwater to accumulate.


September 30, 2016 Posted by | Fukushima 2016 | , , , | Leave a comment

TEPCO: Groundwater Surfaced and Possibly Leaked at Fukushima Plant During Typhoon





Fukushima Daiichi Floods, Show Lack of Preparedness

News reports indicated that groundwater at Fukushima Daiichi had risen so high it broke the surface and flowed into the port as a recent typhoon passed through the area. As TEPCO prepared to close the steel sea wall and freeze the underground frozen wall, NRA stopped the process for a review of the potential for flooding within the reactor building area.
The conclusion was that TEPCO thought they could sufficiently remove excess groundwater with the sump pump subdrain system near the reactor buildings. There were also concerns of the groundwater dropping too low, allowing contaminated water to flow out of the reactor building basements.
With all this review, nobody conceived a need for more water removal capacity. TEPCO ended up employing some sort of makeshift pumps and also using septic tank trucks to pump up water. This lack of anywhere for rainwater to go may have contributed to the water flowing out into the port as it built up on the surface.
Without some major changes at Daiichi this problem of groundwater rising to the surface and flowing into the port or the sea will continue to happen when significant rainfall takes place.

Typhoon rain raises tainted Fukushima plant groundwater to surface

Heavy rain brought by Typhoon Malakas caused contaminated groundwater to rise to ground level at the radiation-hit Fukushima No. 1 nuclear plant Tuesday night, raising fears of tainted water flooding out to the plant’s port area, its operator said.

Tokyo Electric Power Company Holdings Inc. said in a press release that plant workers are doing their utmost to pump up tainted groundwater at the Fukushima compound, while trying to measure the level of radioactive substances contained in the water.

Under normal circumstances, groundwater taken from wells around the damaged reactor buildings at the Fukushima plant is filtered and stored in numerous tanks built on the compound.

Shortly before 10 p.m. Tuesday, groundwater reached the surface level at an observation well near the seawall at the power plant’s port, and at 11:30 p.m. Tuesday, groundwater stood at 3 cm above the surface level, Tepco said.

The well has a far higher wall and the ground around it is paved, the company said, playing down the possibility that any water flowed out of the well.

By 9 a.m. Wednesday, the water level had dropped to 3 cm below the surface.

Meanwhile, some rainwater may have flowed directly into the port before seeping underground, according to the company.

Tepco will continue pumping groundwater around the seawall, located near the damaged No. 1 to No. 4 reactors, and carry out close examinations of water inside the port, the company said.

In order to curb the flow of groundwater into the sea, the company has covered the seawall with water shields and carries out groundwater pumping operations.

Typhoon Malakas itself was downgraded to an extratropical depression at around 9 p.m. Tuesday as it moved along the coast of the Tokai region and swayed toward the Pacific. It was initially forecast to hit the Kanto region in the early hours of Wednesday.

The previous typhoon, Lionrock, earlier this month killed at least 17 people. Before Lionrock, two typhoons had claimed at least two lives in the northeast.

TEPCO: Possible water leak at Fukushima plant during typhoon

Tokyo Electric Power Co. said Sept. 21 it will check for radiation contamination in seawater near its crippled Fukushima nuclear plant after heavy rain from Typhoon No. 16 brought tainted groundwater to the surface.

The water reached the top of wells at the Fukushima No. 1 nuclear power plant, and there is a possibility that some of it spilled into the sea.

We will analyze the seawater because we cannot determine whether groundwater containing radioactive materials has actually leaked,” a TEPCO official said.

The official added that the company believes most of the water that may have poured into the sea was rainwater that had not seeped into the ground.

The utility constantly monitors groundwater levels in wells around the reactor buildings at the plant to prevent overflows.

TEPCO said groundwater in wells on the seaside area of the nuclear complex reached the surface around 10 p.m. on Sept. 20 amid the heavy rain brought by the approaching typhoon. The water kept rising despite workers’ efforts to lower the level using makeshift pumps and septic tank trucks.

The groundwater level remained the same as of 7 a.m. on Sept. 21 before it finally dropped to about 3 centimeters from the surface two hours later, the company said.

According to TEPCO, about 575 millimeters of rain fell in the area of the nuclear plant from Aug. 1 to Sept. 20.


September 23, 2016 Posted by | Fukushima 2016 | , , , | Leave a comment

Underground Water Now Surfacing in Fukushima Daiichi




With Typhoon N°16 heavy rain, underground water level reaches ground surface at Fukushima Daiichi.

With the heavy rain associated with the approach of typhoon No. 16, Tepco announced that the underground water level of the sea side of the Fukushima Daiichi nuclear power plant area is now at ground level.

There is a possibility that contaminated groundwater has flowed into the sea mixed with the rain.

TEPCO plans soon to analyze the surface of the water and the seawater.

September 20, 2016 Posted by | Fukushima 2016 | , | 1 Comment

Typhoons cause ‘ice wall’ to melt at Fukushima nuclear plant


Workers examine pipes for the wall of frozen soil at the embattled Fukushima No. 1 nuclear power plant.

Rainfall from recent typhoons caused partial melting of the “ice wall” at the Fukushima No. 1 nuclear plant, allowing highly radioactive water to leak from around the damaged reactor buildings, the plant’s operator said Sept. 1.

Tokyo Electric Power Co. said melting occurred at two sections of the ice wall, which is designed to divert groundwater away from the reactor buildings.

TEPCO officials believe that during the latest typhoon, contaminated water from around the reactor buildings flowed through openings of the ice wall created by the deluge and reached downstream toward the sea.

The groundwater level near a seaside impermeable wall temporarily rose to 28 centimeters below the ground surface when Typhoon No. 10 passed the area on Aug. 30.

Before the typhoon hit, the water level was 35 cm below the surface.

Around 5.5 cm of rainfall a day fell in the area when the typhoon hit.

The groundwater level, however, actually rose by 7 cm, although 740 tons of groundwater was pumped out of the section.

If there had been an additional 15 cm of rain, (the contaminated water) could have poured out over the ground surface” and spilled into the sea, a TEPCO official said Sept. 1.

The Meteorological Agency’s initial forecast said Typhoon No. 10 would bring a maximum 20 cm of rain a day at some locations in the Tohoku region.

The 34.5-billion-yen ($335 million) frozen wall was completed in spring to prevent groundwater from entering the reactor buildings and mixing with highly radioactive water.

TEPCO admitted the underground wall of frozen dirt is not working.

The company said the temperatures at the two sections of the frozen wall have climbed above zero since Typhoon No. 7 approached Fukushima Prefecture on Aug. 17.

The company believes that the partial melting was caused by the influx of water brought by the typhoons and heavy rain in between.

TEPCO plans to freeze the wall again by pouring chemicals into pipes that extend underground.

September 2, 2016 Posted by | Fukushima 2016 | , , , | 1 Comment

After Typhoon Lionrock landed in Fukushima







Flexible container bags filled with radioactive soil in flooded water in Iidate, Fukushima.

Credit to Hiroki Suzuki

September 1, 2016 Posted by | Fukushima 2016 | , , | 2 Comments

Storm slams northern Japan



People in northern Japan are dealing with the aftereffects of a powerful storm.
Lionrock ripped through the region devastated by the 2011 earthquake and tsunami.

It has now moved out to the Sea of Japan and become a low pressure system.

People in Tohoku and the northern island of Hokkaido are dealing with heavy rains, strong winds and rough seas.

Officials also issued mudslide warnings.
They say many parts of the area had one month’s worth of rainfall in just 2 days.

The storm was the first typhoon to strike the Pacific side of Tohoku in recorded history.

August 31, 2016 Posted by | Fukushima 2016 | , | Leave a comment

Danger alert as Typhoon No. 10 lands in Tohoku


Violent waves crash against the shore in Iwaki, Fukushima Prefecture, as Typhoon No. 10 approaches the Tohoku region on the morning of Aug. 30.

Powerful Typhoon No. 10 struck the Tohoku region on the afternoon of Aug. 30 as expected.

The Japan Meteorological Agency has issued a warning to residents of potential record rainfall. The potent storm made landfall in Ofunato, Iwate Prefecture, shortly before 6 p.m. and was moving north-northwest at a speed of 50 kph as of 6 p.m., according to the agency. The atmospheric pressure at the center of the typhoon, known as Typhoon Lionrock outside Japan, was 970 hectopascals.

The sustained wind speed near the center was 108 kph, while gusts can increase up to 162 kph.

The storm is expected to accelerate and keep moving north-northwest, reaching areas northwest of Hirosaki, Aomori Prefecture, by nightfall. It will likely cut through the area into the Sea of Japan where it will then be termed an extratropical cyclone.

The northern part of the nation is expected to see heavy rainfall of more than 50 millimeters per hour on Aug. 30-31. With rain in some areas even likely to exceed 80 mm per hour, precipitation in northern Japan over the course of the two days could total the region’s average rainfall for the entire month of August.

Rainfall in the 24 hours until noon on Aug. 31 is expected to reach 250 mm in the Tohoku region and 200 mm in Hokkaido. The typhoon could bring on heavy rains in the region if the clouds are fed by the wet atmosphere located to the east of the nation.

As the intense rain could cause the radioactive groundwater accumulated on the premises of the crippled Fukushima No. 1 nuclear power plant in coastal Fukushima Prefecture to overflow, operator Tokyo Electric Power Co. is pumping more groundwater from the wells at the facility than usual.

The utility said that groundwater levels are still up by about 20 centimeters since Typhoon No. 9, or Typhoon Mindulle, traveled through the Tohoku region on Aug. 22.

No. 10 is the first typhoon to make landfall in the Tohoku region from the Pacific Ocean side since the meteorological agency started keeping track of the storms in 1951.




Powerful typhoon strikes region of Japan devasted by 2011 tsunami

Hundreds of flights have been grounded and work suspended at damaged Fukushima nuclear reactor.

A powerful typhoon has struck an area in north-eastern Japan devastated by the 2011 tsunami.

More than 100 flights have been grounded and evacuation warning issued for thousands of people as Typhoon Lionrock reached the north-eastern Tohoku region, with wind speeds of up to 126 km recorded on Tuesday evening (30 August).

In 2011, the region was devastated by an earthquake and tsunami, damaging the Fukushima nuclear reactor and leaving more than 18,000 people dead.

More than 170,000 people were subject to evacuation, including 38,000 in Ofunato, according to the Fire and Disaster Management Agency.

Approximately 10,000 homes in the northern region were without electricity, with power lines damaged from the winds, AP reported.

The typhoon was predicted to dump about 35 cm (14 inches) of rain on the north-eastern region by Wednesday morning, more than double the average rainfall for August, Reuters reported.

Airlines cancelled hundreds of flights to and from the northern region, while bullet train services to Tohoku and Hokkaido regions were suspended.

At Fukushima, some outdoor decommissioning work was suspended as the storm neared.


August 31, 2016 Posted by | Fukushima 2016 | , , , | Leave a comment

Typhoon No. 10 barrels toward Kanto and Tohoku, Fukushima Daiichi included



Powerful Typhoon No. 10 is expected to be the first typhoon in at least 65 years to make landfall in the Tohoku region from the Pacific Ocean side on the evening of Aug. 30.

The Japan Meteorological Agency is warning that heavy rains of 80 millimeters or more per hour are expected to fall in some parts of northern Japan, including Tohoku.

The agency is also advising commuters in the Kanto region to take precautions against strong winds and heavy rain on the morning of Aug. 30.

As of noon on Aug. 29, Typhoon No. 10 was advancing in the waters about 340 kilometers southeast of Hachijojima island at a speed of 25 kph. The atmospheric pressure at the center of the typhoon was 945 hectopascals. The maximum wind speed near the center was 162 kph. The maximum momentary wind speed was 216 kph.

Typhoon No. 10 is expected to reach waters about 360 km southeast of Choshi, Chiba Prefecture, in the morning on Aug. 30, although it is expected to slightly weaken by that time.

The typhoon is forecast to make landfall on the Tohoku region later that day and move to the Sea of Japan before dawn on Aug. 31, the agency said.

According to the agency, no typhoons have landed on the Tohoku region from the Pacific Ocean side since statistics became available in 1951.

In the period from Aug. 29 to Aug. 30, the maximum wind speed is expected to be 126 kph in the Tohoku region and 82.8 kph in the Hokkaido and Kanto regions.

The amount of rainfall during the 24-hour period until the morning of Aug. 30 is predicted to be up to 200 mm in the Tohoku and Kanto regions and Yamanashi and Nagano prefectures.

Fukushima nuclear plant prepares for typhoon

The operator of the troubled Fukushima Daiichi nuclear power plant is preparing for the powerful Typhoon Lionrock.

Tokyo Electric Power Company says on Monday workers secured electric cables and hoses.

TEPCO says on Tuesday it will suspend work with cranes and other operations at the plant’s port, which could bear the brunt of strong winds and waves. Depending on weather conditions, the firm may also call off outdoor work in other areas.

It says when the most recent typhoon approached last week, heavy rain caused underground water levels to rise and threatened to flush contaminated water into the harbor.

Workers are arranging pumps to draw up more ground water, and setting up additional pumps at wells used to observe water levels.

There were concerns in the past that a downpour brought by a typhoon could cause contaminated rain water to flow through a drainage channel into the ocean.

To address these fears, TEPCO rerouted the drainage system into the plant’s inside port. It also raised the levels of barriers around tanks that store tainted water.

Nearing typhoon halts work at Fukushima Daiichi

Workers at the troubled Fukushima Daiichi nuclear plant have suspended some of the decommissioning work and are bracing for rain and winds from a powerful typhoon.

Typhoon Lionrock is expected to make landfall along Japan’s northeastern coast on Tuesday afternoon, passing off Fukushima Prefecture.

Tokyo Electric Power Company says workers secured electric cables and hoses on the plant compound on Monday.

On Tuesday, the operator suspended work at the plant’s port. It also stopped the operation of a crane being used to demolish a temporary cover over one of the reactor buildings. Officials say they are closely watching to make sure the cover is not blown off by the typhoon.

TEPCO says it has also taken measures to prevent contaminated rain water and groundwater from leaking into the ocean.

In past typhoons, it was thought that contaminated rainwater flowed into the ocean through a drainage system. There were also concerns that radioactive groundwater might leak into the ocean as rain could increase the groundwater in the compound.

This time the operator has installed stronger pumps and increased their number.

The utility says as of 11 AM Tuesday, there were no changes in groundwater levels at the plant’s site.

Other measures taken earlier include rerouting the drainage system into the plant’s port instead of directly into the ocean. TEPCO also raised the barriers around tanks that store tainted water.

August 30, 2016 Posted by | Fukushima 2016 | , , | Leave a comment

Typhoon Lionrock Might Land On Fukushima Daiichi



It might land in north east Japan for the first time since the beginning of meteorological records. We are very very worried about the Fukushima Daiichi NPP and the local population.

Typhoon Lionrock has strengthened and changed course. Current predictions as of today shows it hitting the Tohoku coast as a category 1 typhoon. The center of the predicted path is around Sendai, Miyagi Prefecture. Fukushima Prefecture and Fukushima Daiichi are within the predicted path zone.

Even if it doesn’t directly hit Fukushima Daiichi, outer bands could still cause significant problems. High winds could damage contaminated water tanks in the process of being disassembled or assembled on site. These tanks are highly radioactive and some may still contain highly radioactive water or sludge. Cranes and other outdoor structures that could be damaged by high winds are a concern.

The “K” drainage system connected to the roofs of the reactor buildings before the disaster. Post disaster we still see spikes in contamination in this drainage system. There are multiple other locations where this system could be fed contaminated run off. This drainage system has been redirected to the port but the port still exchanges water with the sea, so it isn’t a reliable solution. There is a pumping system to pump contaminated groundwater out of the area near the reactor buildings then to contaminated water storage.

It is not clear if it can keep up with both the ongoing groundwater intrusion and influx from a typhoon.


August 28, 2016 Posted by | Fukushima 2016 | , , | Leave a comment

Bags of Radioactive waste spilled after torrential rain.


First thing that came to mind was “how would those radioactive waste filled bags hold during yesterday’s torrential rain in Ibaraki, Tochigi and Fukushima which forced thousands and thousands to evacuate?” . Predictable answer is “they did not”!

Exhibit A; The village of Iitate Mura, Fukushima

Under the influence of heavy rain the river bed overflown and spilled and shredded bags of temporarily stored radioactive waste (tainted grass, soil and other radioactive substances removed during decontamination).

There were several places in Fukushima where radioactive waste was spilled, but so far, the most hit place is Sekizawa. It is reported there are unidentified number of similar black bags are scattered around at multiple locations like this one. And each bag contains radioactivity of 0.5 to 1 μSv/hour.

For years these bags have been piling up, in open air, often abandoned on the side of roads or hidden in a forest nearby. There are hundreds of sites hosting this dangerous material in those three prefectures. Most of the bags are starting to deteriorate as they are meant to last up 2 to 3 years only. But yet again, the government keeps on ignoring even the simplest of predictable outcomes – such as heavy rains from a Japanese trademark; Typhoons. We know that, most of the population knows that – but the government keeps on turning a blind eye and mixing up priorities. Securing these radioactive bags should have come before the Olympics. So much shame and laziness of the mind

Entire homes and cars were carried away on the torrent as the Kinugawa River burst its banks after two days of heavy rainfall.

In Tochigi, more than 500mm (19 inches) of rain fell in 24 hours in places, according to local public broadcaster NHK, which said that was about double what normally falls there throughout the whole of September.

Parts of central Tochigi have seen almost 60cm of rain since Monday evening, breaking records.

Many other areas of eastern and north-eastern Japan have also been issued weather warnings, including Fukushima prefecture, home to the still-damaged nuclear plant hit in 2011’s earthquake and tsunami.

The downpour overwhelmed the site’s drainage pumps, a spokesman for operator Tokyo Electric Power (Tepco) said. Huge volumes of water, used to cool the plant’s crippled reactors, are being stored at the site.

Source:Evacuate Fukushima

82 Contaminated Waste Bags From Fukushima Washed Away By Typhoon Flood
At least 82 bags filled with contaminated material from the crippled Fukushima nuclear plant have been swept away by flood water as typhoon Etau hit Japan, officials said. TEPCO said rainwater from the nuclear plant has been leaking into the Pacific.
Flooding caused by Tropical Typhoon Etau has swept at least 82 bags suspected to contain radioactive grass and other contaminated materials that had been collected at the site of the crippled Fukushima Daiichi nuclear power plant (NPP).

They had been stored in a nearby town in the same prefecture, the Environment Ministry said on Friday, according to local media. Though the Ministry went on to say that most of the bags had been recovered undamaged, local media reported that only 30 of the bags had been found.
Officials said the flooding had not reached the nuclear reactors damaged in the 2011 disaster, when the NPP was hit by a tsunami that had been caused by an earthquake. The nuclear disaster at Fukushima, which took place over four years ago, was dubbed the worst since the 1986 Chernobyl nuclear accident.
Earlier on Friday, Tokyo Electric Power CO. (TEPCO), the company in charge of the damaged NPP, said that one of the holding tanks on the premises of the plant has been leaking drainage rainwater into the ocean. Later in the day, TEPCO said the leakage had been stopped. According to the company’s website, there have been several similar cases in recent days.
“On September 9th and 11th, due to typhoon no.18 (Etau), heavy rain caused Fukushima Daiichi K drainage rainwater to overflow to the sea,” TEPCO said, adding that the samples taken on Wednesday “show safe, low levels” of radiation.
“From the sampling result of the 9th, TEPCO concluded that slightly tainted rainwater had overflowed to the sea; however, the new sampling measurement results show no impact to the ocean,” it continued.
Chief Cabinet Secretary Yoshihide Suga warned that the rainwater drenching the crippled Fukushima No. 1 nuclear power plant could flow into the Pacific Ocean, the Japan Times reported on Friday. However, he told reporters that the radiation level of such rainwater would be “sufficiently below” the legally permitted level.
TEPCO said on Friday it will continue to monitor the ocean to “ensure the water quality” and has taken “multiple precautionary measures” to protect the ocean water nearby.
Tens of thousands of Japanese people were ordered to leave their homes across the country as typhoon Etau hit Japan this week. The flooding resulting from the torrential rains has been dubbed the worst in 50 years. As a result, three people have been killed, 27 injured and 26 are still missing across Japan.
Meanwhile, Japan officially restarted the No. 1 reactor of the Sendai nuclear power plant for the first time in two years on Thursday. The reactor resumed commercial operations after receiving the approval of the Nuclear Regulation Authority (NRA). Kyushu Electric Power Co., the operator of the Sendai plant, plans to launch the plant’s No. 1 reactor in mid-October.
After the disaster at Fukushima on March 11, all nuclear reactors in Japan were shut down. Due to electricity shortages, two reactors at Kansai Electric Power’s Oi plant in the Fukui Prefecture were temporarily restarted. However, they were taken offline again in September 2013.

Source: RT

September 11, 2015 Posted by | Japan | , , , , | Leave a comment

Typhoon Etau flooded Fukushima Daiichi

Heavy rains in north eastern Japan have caused flooding at Fukushima Daiichi. Rivers in the region have flooded and a number of nearby towns have declared flood alerts. JMA reported flooding in Tomioka and Futaba near the plant. While TEPCO has not released a clear report on ongoing problems at the plant, bits of information came out in the routine reporting.

K drainage, one of the existing rainwater drainage systems known to transport contaminated runoff out of the plant over topped its containment system. Contaminated water reached the open ocean. Radiation levels recorded on the 9th showed moderately contaminated water was leaking.
K drainage as of the 9th
130 bq/liter c134
550 bq/liter c137
970 bq/liter beta

TEPCO did announce that they were now diverting K drainage water into the C drainage control system.

※ camera for drainage of K drainage is, by providing a weir at the same drainage channel, we have established a transfer pump but has been transferred to the C drainage channel leading to the harbor within, September 9, which was placed in a K drainage After a review of the video, due to the influence of rainfall, over the rainwater weir between 0:28 minutes to 2:34 and 3:58 minutes to 4:24, it is drainage part to the open ocean side Make sure. After that, all rainwater K drainage channel is transferred to C drainage, no drainage to the open ocean.

The B&C drainage systems at the plant were closed due to leaks at the H5 tank farm on the 9th. This system is known to transport contaminated soil and debris to the open ocean if the system is left open during spills or heavy rain events. TEPCO has not said if they have been able to successfully deal with the volume of water that flows out of this system.

Unit 1 work was suspended due to weather on the 9th.

The C tank farm has seen rain water leak out of the weir for this tank group. Water was being pumped out of the weir to prevent further leakage. Radiation readings for the leaking water were reported by TEPCO.

C plant (C East area and West area C)  outside analysis of rainwater in the Weir

< Stormwater C East in the Weir area>

 Cesium134: detection limits (0.59 Bq/L) less than

And cesium137: detection limits (0.71 Bq/L) less than

All beta: 30 Bq/L

< C West area in the Weir in rainwater>

 Cesium134: detection limits (0.60 Bq/L) less than

And cesium137: detection limits (0.72 Bq/L) less than

All beta: 25 Bq/L

< C plant outside  in rainwater>

 Cesium134: detection limit value (0.70 Bq/L) less than

 Cesium 137:1.1 Bq/L

All beta: 44 Bq/L

September 11, 2015 Posted by | Japan | , , | 2 Comments

Fukushima leaks radioactive water after Typhoon Etau busts drainage system

Flooding from Typhoon Etau has caused new leaks of contaminated water to flow from the Fukushima nuclear power station into the ocean. The incident came after a rush of water overwhelmed the site’s drainage pumps.

Typhoon Etau brought lashing rains, floods and storm winds to Japan. Tens of thousands of Japanese people have been ordered to leave their homes across the country.

Tokyo Electric Power CO. (TEPCO) informed the public today that hundreds of tons of radioactive water had leaked from the facility, but maintained that the incident posed no risk to the environment. Large quantities of contaminated water need to be stored in special reservoirs that were used to cool melted fuel rods from reactors at the TEPCO site, which was damaged by the earthquake and tsunami of 2011.

TEPCO had acknowledged the risk of the typhoon to the nuclear site on Tuesday, outlining the preventative measures it was taking.

“For heavy rains, TEPCO has standard procedures to install rainwater guttering on the upper part of the water storage tanks and also to construct dikes around groups of tanks, which is applied to all of the recently added storage tanks,” said the statement adding that “the drainage systems on the premises are most active during heavy rains to keep the site from flooding.”

Despite Tuesday’s statements asserting that the drainage system would protect the nuclear plant station and the operator company was ready to face the typhoon, today’s announcement would imply that TEPCO’s efforts weren’t enough

To deal with the new leaks, TEPCO said on Thursday that it was sealing off the seaside of the nuclear plant with an “impermeable wall” which would “play a crucial role” in preventing contaminated groundwater from reaching the ocean.

To deal with the new leaks, TEPCO said on Thursday that it was sealing off the seaside of the nuclear plant with an “impermeable wall” which would “play a crucial role” in preventing contaminated groundwater from reaching the ocean.

Source: RT

September 11, 2015 Posted by | Japan | , , , | Leave a comment

Japan: Typhoon Etau floods send hundreds of tonnes of contaminated Fukushima water into ocean


Flooding caused by Typhoon Etau has sent hundreds of tonnes of contaminated water from the Fukushima nuclear plant into the ocean, a Tokyo Electric Power (Tepco) spokesperson said. Rain overwhelmed the site’s drainage pumps, they added.

Tepco is storing massive quantities of contaminated water that was used to cool melted fuel in the reactors damaged by the 2011 earthquake and tsunami that devastated the site. In a statement regarding Typhoon Etau earlier in September, the company said the site was at risk from the storm.

“Typhoon No.18 (Etau) is expected to approach the central area of Japan’s honshu island and could affect Fukushima Daiichi Nuclear Power Station as well in the next few days,” it said. “To prepare for the heavy winds, the crane necks are lowered and all the equipment is secured with ropes and covers onsite as standard procedure for construction sites.

“For heavy rains, Tepco has standard procedures to install rainwater guttering on the upper part of the water storage tanks and also to construct dikes around groups of tanks, which is applied to all of the recently added storage tanks.”

Japan’s Meteorological Agency said large parts of the country remains either on a warning or emergency warning for severe weather, with Tochigi and Ibaraki at greatest risk. Fukushima prefecture, to the north of both Tochigi and Ibaraki, is at risk of heavy rain, with ground-loosening and inundation possible.

Etau has led to devastating floods in Japan, with several people reported missing and water levels at waist height in some areas. “This is a scale of downpour that we have not experienced before. Grave danger could be imminent,” forecaster Takuya Deshimaru said at an emergency press conference.

Nasa satellite images showed the storm as it moved across central Japan. The intense rainfall moved northwards over the main island of Honshu, with almost 12in of rain reported. The storm has now weakened and moved over the Sea of Japan, where it is expected to dissipate, but rain has continued to hit the country.

Tens of thousands of people have had to leave their homes, with dramatic footage showing floods sweeping away buildings and cars. Prime Minister Shinzo Abe said officials are working hard to rescue people and aid those effected: He added: “The government will stand united and do its best to deal with the disaster… by putting its highest priority on people’s lives.”

Source: International Business Times

September 11, 2015 Posted by | Japan | , , , | Leave a comment