Terrible news:
About 96 percent of fishing off the coast of Ibaraki was suspended after sand lance contaminated with higher-than- acceptable levels of cesium were discovered yesterday, said Tomoki Mashiko, assistant director at the fishing policy division of the prefectural government. Fishing in Ibaraki had been suspended since the March 11 earthquake and tsunami, restarted as early as March 28, and then suspended again today.
Sushi restaurants and hotels, including Shangri-La Asia’s luxury chain, dropped Japanese seafood from their menus because of radiation fears. Japan exported 565,295 metric tons of marine products worth 195 billion yen ($2.3 billion) last year. A fishing industry group in Fukushima asked Tokyo Electric Power Co. to stop dumping toxic water into the sea as the operator of the damaged nuclear plant struggles to stem radiation leakage.
“The action may be undermining the whole fishing industry in Japan,” Ikuhiro Hattori, chairman for the National Federation of Fisheries Co-Operative Associations, told a vice trade minister today, referring to Tepco dumping water.
Horrible news:
Among the new threats that were cited in the assessment, dated March 26, are the mounting stresses placed on the containment structures as they fill with radioactive cooling water, making them more vulnerable to rupture in one of the aftershocks rattling the site after the earthquake and tsunami of March 11. The document also cites the possibility of explosions inside the containment structures due to the release of hydrogen and oxygen from seawater pumped into the reactors, and offers new details on how semimolten fuel rods and salt buildup are impeding the flow of fresh water meant to cool the nuclear cores.
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The document, which was obtained by The New York Times, provides a more detailed technical assessment than Japanese officials have provided of the conundrum facing the Japanese as they struggle to prevent more fuel melting at the Fukushima Daiichi plant. But it appears to rely largely on data shared with American experts by the Japanese.
Among other problems, the document raises new questions about whether pouring water on nuclear fuel in the absence of functioning cooling systems can be sustained indefinitely. Experts have said the Japanese need to continue to keep the fuel cool for many months until the plant can be stabilized, but there is growing awareness that the risks of pumping water on the fuel present a whole new category of challenges that the nuclear industry is only beginning to comprehend.
The document also suggests that fragments or particles of nuclear fuel from spent fuel pools above the reactors were blown “up to one mile from the units,” and that pieces of highly radioactive material fell between two units and had to be “bulldozed over,” presumably to protect workers at the site. The ejection of nuclear material, which may have occurred during one of the earlier hydrogen explosions, may indicate more extensive damage to the extremely radioactive pools than previously disclosed.