Fukushima Daiichi Zeolite Wall Expected To Last 70 Years
A study in July of 2021 calculated the longevity of the buried zeolite wall at Fukushima Daiichi. The zeolite wall was installed in 2014 to block contaminated groundwater that leaked from the H4 tank farm.
Zeolite and gravel were buried in a trench based on existing remediation efforts at the West Valley nuclear fuel plant in the US.
The study used a variety of commercially available zeolites in Japan and mixed them with varying ratios of gravel to estimate the zeolite wall at Daiichi. Among their varying experiments they found that the zeolite wall at Daiichi would last at least 70 years. Some estimated were over 100 years depending on the percentage of zeolite to gravel used on site. These laboratory estimates help determine the long term safety of the wall. TEPCO has not announced any long term plans to remediate all of the contaminated soil and groundwater lurking on site.
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