Tokyo Electric Power Co. (TEPCO), the Japanese utility that took on the behemoth process of controlling and decommissioning the six-unit Daiichi nuclear energy plant in Fukushima prefecture after the March 11, 2011, accident, just lately launched a video exhibiting progress on the web site.
The catastrophe started as a 15-meter (49-foot) tsunami inundated and disabled the offsite energy provide (12 of 13 backup turbines positioned within the basements of the turbine buildings) of Units 1, 2, and three at Daiichi, interrupting essential cooling features. The tsunami additionally disabled their warmth exchangers and electrical switchgear. All three items consequently noticed explosions that broken their reactor buildings. It was additionally later established that the cores of Daiichi 1, 2, and three had largely melted throughout the first three days of the disaster.
At Unit four, the place the reactor had been shut down for periodic inspection, the nuclear gas had been transferred to a spent gas pool. But after the tsunami, each cooling and feedwater features had been misplaced, forcing crews to spray water over the pool. On March 15, the reactor constructing of that unit additionally exploded, blowing out the partitions above the underside of the operation ground. According to TEPCO’s July 18 video, “all items have been introduced below management, and are being stably cooled.”
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