If I remember right the insides of those areas inside the Fukishima reactors are well above 600 Sieverts an hour (whereas a chest CT is something like 5/1000s of a 1 Sievert) so they're still finding the robots to be dead after a short period of time. A duplicate diet study undertaken in the Aomori Prefecture of Japan during 2006 to 2010 (before the accident at the Fukushima Daiichi nuclear power plant). The plant's owner, Tokyo Electric Power Co., admitted last month that nuclear fuel rods in reactors 2 and 3 probably melted during the. earthquake and tsunami caused multiple meltdowns and destroyed the plant.
NUCLEAR REACTOR MELTDOWN JAPAN MELTING FULL
Part of it is redesigning circuits to eliminate long trace runs, which provide a lot of cross section for the radiation to induce stray currents, degrade signals, etc.īut as with anything, the biggest part of it is shielding and the geometry of things. Reactors 1, 2 and 3 experienced a full meltdown, it said. be melted nuclear fuel covering the floor of a damaged reactor at Japans. Part of it is using much older design chips (in some cases they're experimenting with 70s vintage 6502) which for some reason, larger transistor junctions or something, aren't as touchy to the radiation and reduce shielding necessary. Part of it is shielding at component level, yes. Full decommissioning is expected to take 30 or 40 years, according to Bloomberg.Ĭorrection: This story originally stated in the last paragraph that "fuel in reactors 1 and 2 has not been touched yet." In fact the fuel in reactors 1 and 3 has not been touched.Īre they at the level of creating new hardened chips? Just working on shielding?Ī friend of mine at MIT and I had a discussion some months ago about what folks are doing in terms of playing with such things.
The melted fuel in reactors 1 and 3 has not been touched yet, but information gathered from this probe will help TEPCO form a plan to move forward in the decommissioning process. The paper noted that TEPCO is scheduled to remove a small amount of nuclear fuel later this year for study. It killed at least 10,000 people and possibly as many as 18,000. Chief Cabinet Secretary Yukio Edano said Sunday that a hydrogen explosion could occur at Unit 3 of the Fukushima Dai-ichi nuclear complex, the reactor that could be melting down. "The retrieval process will start in earnest at one of the reactors in 2021, according to the plan drawn up jointly by the central government and TEPCO," The Asahi Shimbun wrote. First, the 9.0 earthquake and 30- to 40-foot-high tsunami was a disaster of unprecedented proportion. The damage led to nuclear meltdowns and a number of hydrogen explosions Workers rushed to restore power, but in the days that followed the nuclear fuel in three of the reactors overheated and. No material was removed from the reactor. As crews searched the rubble for survivors and the nation reeled from the earthquake and ensuing tsunami, the nuclear disaster unfolded over the course of several days. Further Reading Remediating Fukushima-“When everything goes to hell, you go back to basics” According to The Asahi Shimbun, the eight-hour operation helped TEPCO glean information on the kinds of containers it will need to remove the melted nuclear fuel.
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