SimplyInfo » Entries tagged with "daiichi"
Fukushima Daiichi Work Stopped Due To Tsunami Warning
Due to the tsunami warning caused by the earthquake in Chile, work at the plant was called off yesterday. There was no formal announcement of the resumption of work as of this morning US time. Routine reports including well testing were released later in the day. This article would not be possible without the extensive efforts of the SimplyInfo research team Join the conversation at chat.simplyinfo.org All content is copyright SimplyInfo.org. Content cited, quoted etc. from other sources … Read entire article »
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Worker Death At Fukushima Daiichi Completely Preventable
TEPCO released an interim report into the recent construction worker’s death at the plant. The report showed that the worker had been working in a small cave like area while jackhammering concrete overhead. This was under the overhang of the building foundation. This scenario would have been considered inappropriate under the worker safety rules in most developed countries. The hole dug for access to this area of the foundation was held back with plywood and steel … Read entire article »
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SimplyInfo.org Fukushima Proposals To Be Validation Tested In Japan
METI announced today in an email and press release that four ideas brought about by the IRID call for proposals will be funded by the Japanese government for further research. Mitsubishi Research Institute will manage the projects with a proposal process for individual labs to do the hands on work in the near future. The four concepts that will be funded for validation are: (1) Demonstration Project for Seawater Purification Technologies Our proposal (2) Demonstration Project for Technologies for … Read entire article »
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Fukushima ALPS System To Be Offline Indefinitely
Asahi Shimbun is reporting that the ALPS system will be offline for an unknown amount of time. The B train of ALPS was not properly processing contaminated water for 4 days without anyone discovering this. The water was then mixed with finished water from the A and C train and routed to storage tanks. This mistake has contaminated a multitude of pipes and tanks intended for lower level water. TEPCO mentioned possibly reprocessing all of the … Read entire article »
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SimplyInfo.org Releases Two New Technical Papers On Fukushima
SimplyInfo.org has released two new technical papers on the Fukushima Daiichi disaster. The first addresses technical concerns with the reactor support skirt. It looks at potential events during the meltdowns and possible measures that could partially lower the risk factor. The second paper looks at the early failure potential of the core spray and feedwater systems used for emergency cooling of the reactors at Daiichi. Reactor Vessel Support Skirt Concerns By Dean Wilkie http://www.fukuleaks.org/web/?page_id=12603 Fukushima Daiichi BWR Reactor Spray … Read entire article »
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Big Fukushima Daiichi Update; March 18, 2014
Small bits of information have been coming out in recent weeks regarding Fukushima Daiichi. Here’s what you need to know: ALPS: A new improved version of ALPS is being installed based on research by METI. Installation began in March 2014. The current 3 versions of ALPS have been stopped for inspections after it was discovered that one unit was no longer decontaminating water properly. Water Tanks: Work has been underway to install the new welded tanks the Japanese government is … Read entire article »
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5 MILLION bq/liter Strontium 90 Found In Well At Fukushima Daiichi
TEPCO released readings for two seafront wells that have not been published before. Wells 1-2 and 1-3 were not on any older reports from before January.These are the first strontium 90 readings for these wells. The strontium 90 reading for well 1-2 was 5,000,000 bq/liter dated July 5, 2013. The “all beta” reading for the same date was actually lower than the strontium 90 alone at 900,000 bq/liter. TEPCO gives no explanation for how they … Read entire article »
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264 Fuel Assemblies Removed At Fukushima Unit 4
264 fuel assemblies have been removed to the common pool from unit 4. http://www.tepco.co.jp/en/nu/fukushima-np/removal4u/index-e.html This article would not be possible without the extensive efforts of the SimplyInfo research team Join the conversation at chat.simplyinfo.org All content is copyright SimplyInfo.org. Content cited, quoted etc. from other sources is under the respective rights of that content owner. If you are viewing this page on any website other than www.simplyinfo.org (or www.fukuleaks.org) it may be plagiarized, please let us know. If … Read entire article »
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SimplyInfo.Org Zeolite Plan To Be Tested At Fukushima Daiichi
NHK is reporting that the government task force and TEPCO will implement one of our submitted ideas at the plant. The underground zeolite wall strategy we submitted to IRID will be given a trial near the waste water tanks on the hill that have been leaking high amounts of strontium 90. A 20 meter deep hole will be dug and filled with zeolite to test the ability of the material to absorb the strontium 90 leaked … Read entire article »
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More On Fukushima Unit 3, TEPCO Fails To Explain Levels
TEPCO released two new handouts on the leak at unit 3. This gives some additional insight but still fails to explain a number of critical issues. Handout 1: http://www.tepco.co.jp/nu/fukushima-np/handouts/2014/images/handouts_140122_05-j.pdf Handout 2: http://www.tepco.co.jp/en/nu/fukushima-np/roadmap/images/l140120_01-e.pdf TEPCO does not provide any data to explain their claim for where the water level in containment is. They cite using pressure readings to determine this but give no information to show how they came to such a conclusion. Available pressure readings show a single sensor for the … Read entire article »
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Groundwater Well At Fukushima Daiichi Hits 3.1 Million Bq
Groundwater well 1-16 at Fukushima Daiichi has hit 3.1 million bq of beta radiation. This is a new high for this well. TEPCO still has not provided an explanation for this rising problem. The levels began soaring when this section had impermeable wall installed. well 1-16 at 3.1 million bq beta http://www.tepco.co.jp/nu/fukushima-np/f1/smp/2014/images/2tb-east_14012101-j.pdf This article would not be possible without the extensive efforts of the SimplyInfo research team Join the conversation at chat.simplyinfo.org All content is copyright SimplyInfo.org. Content cited, quoted … Read entire article »
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176 Fuel Assemblies Removed From Unit 4 Fukushima Daiichi
TEPCO’s weekly update on fuel removed from Unit 4′s spent fuel pool now sits at 176 spent assemblies removed from the reactor pool to the common pool. This article would not be possible without the extensive efforts of the SimplyInfo research team Join the conversation at chat.simplyinfo.org All content is copyright SimplyInfo.org. Content cited, quoted etc. from other sources is under the respective rights of that content owner. If you are viewing this page on any website … Read entire article »
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ALPS Still Not Meeting Targets, Operation Date Uncertain
NRA is saying that ALPS is still not meeting the radiation removal targets claimed for the system. A problem with the removal of radioactive iodine is still unsolved. A target date for full operation is still not being set due to the setbacks. http://www.yomiuri.co.jp/science/news/20140114-OYT1T01083.htm?from=tw This article would not be possible without the extensive efforts of the SimplyInfo research team Join the conversation at chat.simplyinfo.org All content is copyright SimplyInfo.org. Content cited, quoted etc. from other sources is under the … Read entire article »
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TEPCO Releases More Details About Frozen Wall
TEPCO released a short video (in Japanese) giving more information about the test run of the frozen wall technology. The test location has been running for at least a month according to previous reports. The video provided a few more views of the equipment being used and the sealing capability. The test location appears to have been running successfully. This test has been going on in winter so it is unclear if they wall would … Read entire article »
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Fukushima News Roundup; January 11, 2011
An in-house Tepco panel has found that the financially troubled utility paid two to five times more than reasonable levels in buying goods and services to run its operations. http://www.japantimes.co.jp/news/2014/01/10/national/tepco-overpaying-to-procure-goods-services-contract-screening-panel/#.UtB-StIVorU JAEA plans to do an experiment in a test reactor to simulate the fuel meltdowns at Fukushima Daiichi using a very small model fuel rod. We are still trying to fully understand the plan but it appears to be the gathering data that has been gathered by other nuclear experiments and may be redundant. http://the-japan-news.com/news/article/0000924969 TEPCO has admitted they have withheld strontium 90 data from the public for 6 months. TEPCO claims that they were unable to solve discrepancies in their testing and withheld data rather than giving out data they were unsure about. They now claim they will fix it by the … Read entire article »
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TEPCO Re-Installs Unit 1 Web Camera At Fukushima Daiichi
TEPCO is reporting they will re-install the web camera near unit 1. The camera is not live yet but will give another view of the work at the plant. This article would not be possible without the extensive efforts of the SimplyInfo research team Join the conversation at chat.simplyinfo.org All content is copyright SimplyInfo.org. Content cited, quoted etc. from other sources is under the respective rights of that content owner. If you are viewing this page on any … Read entire article »
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First Implementation Of Ice Wall Will Allow Emptying Of Highly Contaminated Trench Water
NHK reports that the test operation of the ice wall technology done earlier in December will enable them to isolate a trench that has been leaking highly contaminated water out to sea. Earlier TEPCO reporting showed that the ice wall produced at the end of the trench froze the space in the trench including inside pipes. The trench water will be stored onsite with other contaminated water. Once the trench is emptied they should be able … Read entire article »
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Fukushima Daiichi Fuel Storage Locations Updated
As part of the larger roadmap document TEPCO has reported some major changes in the location of spent fuel around the plant. The cask storage building on the sea front now has no casks stored inside. At the time of the tsunami there were a number of casks inside the building. TEPCO now records there to be 0 casks in that building. The temporary cask storage facility on the hill has increased inventory considerably. A total of 1274 … Read entire article »
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Fukushima Daiichi ALPS Water Treatment System Hits Big Problem
Lack of planning again foils efforts at Fukushima Daiichi. Ex-SKF found the very bad news in a METI report from a closed meeting. The report explains how the ALPS treatment system is unable to properly filter out the radioactive contamination properly in the state it exists in. The portion of the system capable of extracting that contamination does so but makes a huge amount of waste in the process. So now Toshiba, TEPCO and Energy … Read entire article »
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Fukushima Daiichi Groundwater Well Hits 2 Million Bq Beta Radiation
Well 1-16 in the sea front area at Fukushima Daiichi has hit another new record. 2,100,000 bq/liter of beta radiation was found in the well. TEPCO has yet to explain why this particular well is so high in beta radiation without related increases in other types of radiation. They have also provided no explanation why this specific well has been consistently much higher than any of the surrounding wells. The well does sit adjacent to the … Read entire article »
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Inspection Of Damaged Fuel Assembly Unit 4 Fukushima Daiichi
TEPCO released a brief report on the bent fuel assembly in unit 4′s spent fuel pool. The outer box of the bent assembly showed cracks in the steel on both sides of the bend. They stated that there we no increases in radiation near the assembly. This would indicate that the interior fuel rods were not broken to the point of leaking contamination that was detectable. TEPCO previously admitted a pre-disaster bent fuel assembly was … Read entire article »
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TEPCO Begins Seismic Review Of Unit 3
TEPCO has begun a seismic review of the condition of unit 3. With the debris removed from the refueling floor, efforts have begun to inspect the building for more damage. They will begin reviewing the refueling floor with a camera hung from a crane tomorrow. TEPCO also intends to do similar work on all levels of the building but does not clarify how they intend to reach some portions of the building that fell in … Read entire article »
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SimplyInfo.org’s Fukushima Corium Research Experiment Results
In our research we have tried to find ways to help explain some of the behaviors seen in meltdown accidents. A picture can be better than just explaining it. A full on experiment can be even better. We have been investigating the processes of the melted fuel escaping the reactor vessel and how it behaves. Below the reactor vessel is a round concrete pedestal that helps hold up the reactor vessel. This round structure has a … Read entire article »
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TEPCO Worried About Vent Tower Stability, 25 Seivert Radiation Found At Base
TEPCO had been inspecting the unit 1/2 vent tower at a distance after damage to the upper structural system was found a few months ago. This had involved using telephoto camera lenses to view portions of the tower. This tower has been roped off since August 2011 when extremely high radiation was found near the tower. Now TEPCO has sent workers to take radiation readings around the base of the tower again. They found 25 seiverts … Read entire article »
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Testing On Frozen Wall At Fukushima Daiichi Is Underway
Work has begun to test the frozen underground wall concept at Fukushima Daiichi. A test section was frozen including the area inside pipes in the mock up. A video of the work can be found here http://youtu.be/4se7KSjF1lY TEPCO hopes to install the wall with government help and funding in upcoming years to combat the constant flow of contaminated water to the sea. This article would not be possible without the extensive efforts of the SimplyInfo research team Join the … Read entire article »
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Panel Urges New Water Responses At Fukushima Daiichi
One of the various panels making suggestions for the response to the mess at Fukushima Daiichi has called for 5 new measures to combat radioactive water at the plant. As the plant continues to leak an estimated 9 terabecquerels of just cesium 137 alone to the sea every month, these solutions are critical. Storage tanks with double outer walls Sealing cracks and piping holes with concrete Pave the ground with asphalt to prevent rainwater from seeping in Handling of … Read entire article »
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17.8% Of Unit 1 Spent Fuel Damaged Before Fukushima Disaster
TEPCO is now admitting the number of damaged spent fuel rods in some of their reactors at the Daiichi plant. There is a total of 80 heavily damaged fuel assemblies from before the disaster, 70 of them are in unit 1′s spent fuel pool. Workers have not been able to inspect this fuel pool due to debris and damage to the building. Ex-SKF translates from a local Fukushima newspaper that TEPCO has admitted these damaged assemblies. … Read entire article »
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TEPCO Finally Admits Landslide At Fukushima Daiichi 10 Days Later
TEPCO is now admitting publicly, a landslide at the plant that happened 10 days ago. We first heard of the landslide last week from former workers at the plant. The landslide happened as typhoon Wipha passed over the plant dumping considerable rainfall. The blocked road is one of the main roads into the plant. This shows not just the considerable vulnerability at Fukushima Daiichi, but at nuclear plants around Japan. Nuclear plants such as Oi have … Read entire article »
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SimplyInfo.org Submits Series Of Fukushima Response Proposals To IRID
The Japanese government put out the call for international help with the disaster response at Fukushima Daiichi. The new agency tasked with taking these responses and developing working plans is known as IRID. Through our work since the initial disaster we have closely researched and documented the outcomes and technical issues at the plant. We have seen challenges at Daiichi in the past and TEPCO has implemented some of our concepts sent their way. The new … Read entire article »
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Another Typhoon Headed Towards Fukushima Daiichi
Typhoon Wipha is headed towards Fukushima Daiichi. The storm is expected to be a category 1 typhoon as it reaches northern Honshu around Fukushima Daiichi. The storm’s earlier predictions had it further out to sea. Newer predictions show the storm headed almost directly towards the disaster site. A category 1 storm would have winds between 75 to 95 mph. Winds may not be the main issue as the massive amounts of rain these kinds of … Read entire article »
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NRA Demands TEPCO Fix Problems, Send Staff From Other Plants To Fukushima
The NRA had nothing good to say to TEPCO president Hirose today. In a rather scathing rebuke of the company, Katsuhiko Ikeda of the NRA blamed TEPCO for making “rudimentary mistakes” and said management is deteriorating. The NRA told Hirose to submit a report within a week explaining how they will fix the situation. They told Hirose to bring staff from other nuclear plants including Kashiwazaki Kariwa if needed to gain control of the situation. Ikeda also … Read entire article »
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5.9 Shallow Quake Near Daiichi, May Have Challenged SFP Resistance
Today’s quake at Daiichi has been upgraded to a 5.9 04:54 20 September 2013 M5.9 quake strikes Fukushima, no reports of plant damage TOKYO, Sept. 20, Kyodo The initial data showed it close to the plant and shallow Magnitude: 5.3 Mercalli scale: 5 Date-Time [UTC]: 19 September, 2013 at 17:25:09 UTC Local Date/Time: Thursday, September 19, 2013 at 17:25 in the afternoon at epicenter Coordinate: 37° 4.296, 140° 38.970 Depth: 22.20 km (13.79 miles) Hypocentrum: Shallow depth Class: Moderate Region: Asia Country: Japan Location: 19.75 km (12.27 miles) – … Read entire article »
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What Is Going On At Fukushima Daiichi Right Now
TEPCO tends to bury bits of information among obscure sources while pushing their distraction of the day at the public. These are some of the things of note this week that have changed at the plant. Unit 2 Pressure Drop Unit 2 has continued to see containment pressure drop. TEPCO resolved the initial drop in pressure by closing a valve. The pressure slightly recovered then began to drop again this week. It has slowly dropped each day this week and is now down to 4.70 kPa g. TEPCO makes no explanation for the ongoing loss of pressure in containment at unit 2. Readings previous to this change had been in the 15 kPa g range for months. Unit 2 Trench Leaking An expert from JAEA is claiming that a trench near unit 2 is still … Read entire article »
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New Groundwater Contamination At Daiichi, Problem Out Of Control
A new spot of contaminated water was found Monday at Fukushima Daiichi. What makes this one a bit different is this high beta radiation was not found near a tank. It was found in a groundwater testing well. Earlier leaks that caused great concern and for the NRA to issue a nuclear disaster rating were detected in the surface water and top of soil near the leaking tanks. These were as high as 2200 mSv/h (beta). … Read entire article »
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Crane Collapse At Fukushima Daiichi
A crane collapsed at Fukushima Daiichi the morning of September 5th. The crane apparently collapsed slowly and before work started for the day with the crane arm ending up “face down” on the pavement. TEPCO cites a small crack being found near one of the articulations of the crane. Luckily this failure did not happen during work on the refueling floor of unit 3 where it is currently stationed. Video of the crane collapse at about … Read entire article »
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New Fukushima Tank Leaks, Levels As High As 1.8 Sv/h
Tepco announced three more tank leaks at Daiichi. Two are actually existing tank leaks that have worsened and one is a new one. The tank that has the worst change was H3B-Tank 4. It went from a 100 mSv/h detected leak on Aug 22 to a 1.8 Sv/h leak today. Leaks this high will complicate work to deal with the tanks. That level would be considered dangerously high inside the reactor building and would require … Read entire article »
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Tank Leak At Daiichi; More Failures To Come, Direct Route To The Sea
TEPCO reported a leaking tank yesterday that initially sounded like nothing new. They have had minor leaks in these tanks and others before. This tank leak is larger, 300 of the 1000 tons from the tank has leaked. The water leaking out is highly contaminated with readings as high as 96 mSv/h of just beta radiation, this doesn’t include any gamma readings. The water itself read 80 million bq/liter. TEPCO now reports that it was the gasket of the bolt together tank that failed. There have been other instances of these gaskets leaking but in smaller amounts. TEPCO claims that workers check these tanks for leaks twice a day. The used tanks, about 300 of them, have an estimated 5 year life span for the gaskets and bolts. Many of the tanks … Read entire article »
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NRA To Add Outside Experts At Fukushima As Disaster Spirals Further Out Of Control
NRA announced an increased role at Fukushima Daiichi. “The authority said that it will set up a group of geologists to collect data to gauge the extent of the diffusion of radiation in the water and soil while continuing to leave planning and implementation of appropriate counter measures to the plant’s operator,” The chairman of the NRA earlier confirmed the idea that the NRA would be doing more: ““It is simply too big for one company to handle,” Mr. Tanaka said last Wednesday, and suggested government’s intervention.” A TEPCO representative made this statement: “We are very grateful for the help. We will show the whole picture to the public as soon as possible by working together with them,” The article went on to advocate for ignoring decommissioning of the reactors in order to focus on the … Read entire article »
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TEPCO Proves Again, They Can’t Be Trusted To Operate A Nuclear Reactor
Workers at Fukushima Daiichi lost cooling to unit 6 for 2 hours today. They were performing a test for an emergency diesel generator when they turned off a power panel. This caused the reactor to lose cooling for 2 hours. This is a highly abnormal situation where they lost both power sources resulting in a loss of cooling for such an extended period of time. The long time frame indicates there may have been equipment damage TEPCO is not disclosing. Unit 6 was in shut down when the 2011 earthquake and tsunami hit. It did not suffer a meltdown and still has a full load of fuel in the reactor from 2011. Had the reactor lost cooling for 2 hours under other circumstances such as operation or a recent shutdown it … Read entire article »
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Black Stuff Found Around Eastern Japan May Be Fukushima Nuclear Fuel
We have reported extensively on the highly radioactive “black stuff” being found around eastern Japan, as far away as Tokyo. Citizens initially found the substance, usually concentrated in gutters and low spots. Some superficial analysis had been done on the substance, again by citizens. The government has refused to acknowledge the issue or do any publicly acknowledged testing of the substance. Marco Kalofan, an environmental engineer in the US was able to obtain a sample for detailed analysis. What was found was quite unusual. The substance isn’t a sand but an aggregate of radioactive substances, metals and rare earth materials. The materials for some reason clumped together into an aggregate rather than dispersing as tiny particles. What the detailed analysis showed was that the material may have come from inside failed fuel … Read entire article »
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