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Fukushima Fuel Inventory Update; February 4, 2014

Fukushima Fuel Inventory Update; February 4, 2014

The cask storage facility at the seafront is now completely empty, all casks have been moved. This building will likely no longer be used. The common pool is now 82.5% full with 5643 fuel assemblies stored in the pool. Temporary cask storage is 43.5% full with 1274 fuel assemblies stored there. Unit 4 is down to 1401 assemblies remaining in the pool. http://www.meti.go.jp/earthquake/nuclear/pdf/131226/131226_01dd.pdf This article would not be possible without the extensive efforts of the SimplyInfo research team Join the conversation … Read entire article »

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NRA Japan Saves The US West Coast And The Rest Of The World

NRA Japan Saves The US West Coast And The Rest Of The World

NRA demanded that TEPCO drop test waste canisters to be used to hold highly radioactive sludge from the ALPS processing system. They also stopped TEPCO from operating ALPS months ago and demanded they test the system first. The systems are all still in various phases of testing due to a string of failures. Had NRA not stepped in TEPCO would have had ALPS in an attempt at full operation with now known flaws and have … Read entire article »

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Fukushima Daiichi Fuel Storage Locations Updated

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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U4 Fuel Cask Moved To Common Pool Building

U4 Fuel Cask Moved To Common Pool Building

NHK and TEPCO have announced that the first cask of fuel assemblies has been moved from unit 4 to the common pool building. The cask will be placed in the common pool on Friday. Then work will begin to remove the assemblies from the cask to racks in the common pool. NHK has video of the transfer truck moving between buildings here. More images can be found here http://www.flickr.com/photos/simplyinfo/sets/72157637484080604/ Video of the effort here http://youtu.be/de_XveTXwwc This article would not be possible … Read entire article »

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Fukushima Unit 4 Cask Moved, New Underwater Video

Fukushima Unit 4 Cask Moved, New Underwater Video

NHK is reporting that the cask transport effort took place Wednesday day. TEPCO has not forwarded any additional announcements at this time. They did however release an underwater video of the fuel transfer work. Per previous reports on Tuesday, TEPCO will review the process to look for portions that may need improvement before they begin the next round of fuel removal. Video of the fuel removal can be found on our YouTube channel http://www.youtube.com/watch?v=mIUHezUe1as&feature=youtu.be   This article would not … Read entire article »

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First Cask Filled At Unit 4 Fukushima Daiichi

First Cask Filled At Unit 4 Fukushima Daiichi

TEPCO announced that they have filled the first cask with fuel as of 6:28PM JST Tuesday. A total of 22 assemblies were loaded between Monday and Tuesday. This from the TEPCO press release via email: “Fukushima, Japan, Nov. 19, 2013-TEPCO announced today that they have completed the second day work for fuel removal from the Unit 4 spent fuel pool at Fukushima Daiichi NPS. 22 fuel assemblies were loaded into the cask, and all the work for the … Read entire article »

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Unit 4 Fuel Removal May Start Monday

Unit 4 Fuel Removal May Start Monday

According to a document TEPCO released this week, as long as third party inspections are passed Thursday and Friday work to removal fuel may start on Monday. A dry run of cask handling was done on November 13th along with a mock fuel removal using “simulated fuel”. TEPCO has outlined a bit more about processes and safety mechanisms put in place. TEPCO did have training time blocked off in the schedule, so some sort of unified … Read entire article »

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US Nuclear; Failing Casks, Cracked Concrete And Foot Dragging On Safety

30 of the US’s 100+ nuclear plants have ordered spent fuel pool water level monitoring systems. The issue of this kind of equipment came up again during hurricane Sandy as both members of the public and experts questioned if the nuclear plants impacted by the storm had upgraded spent fuel pool equipment. The new equipment to monitor and provide water to the pool was suggested by the post Fukushima committee that looked at what failed and could fail at US reactors. It is not clear if the remaining units in the US have not ordered such equipment or have already ordered such equipment. The water level monitoring system is only part of the suggested upgrades and comes with a 7 day battery pack. Dry Casks Failing In The US The NRC found multiple … Read entire article »

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TEPCO’s New Decontamination System Delayed By Tank Failures

TEPCO has announced a delay in the start up of the new decontamination system at Fukushima Daiichi. The system was supposed to go online this fall but remains delayed as TEPCO tries to find acceptable storage containers for the sludge created by the new system. TEPCO did drop tests recently to see how these new containers would hold up to various ways they might be dropped as they are moved about the plant. The drop tests were quite the series of failures. The tanks were procured from Energy Solutions of Barnwell, SC (US), a company located near the Savannah River nuclear site.  The High Integrity Container tested by TEPCO doesn’t mention the exact material composition. A press release from Energy Solutions announcing their partnership with Toshiba to provide these casks … Read entire article »

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The Future Of Fukushima Daiichi Spent Fuel

This little talked about set of challenges will play a considerable role in the decommissioning and safety of Fukushima Daiichi. We have collected up all of the bits of information about the spent fuel and the handling options to gain a better understanding of the challenge. Spent Fuel: Each fuel assembly weighs about .5 tons Each fuel assembly contains 50 to 70 fuel rods, an 8×8 BWR fuel assembly contains 64 fuel rods plus 2 hollow tie rods. Common pool inventory: 6375 1-4 sfp’s inventory: 3108 Total plant inventory (not including reactor cores):11417 Unit 1 SFP: 292 irradiated (used) fuel assemblies and 100 unirradiated new unused assemblies Unit 2 SFP: 587 irradiated (used) fuel assemblies and 28 unirradiated new unused assemblies Unit 3 SFP: 514 irradiated (used) fuel assemblies and 52 unirradiated new unused assemblies Unit 4 SFP: 1331 irradiated … Read entire article »

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