January 7, 2019
Mako Oshidori reported from a recent TEPCO press conference that the company has admitted to finding hydrogen sulfide in some of the contaminated water tanks at Fukushima Daiichi.
The instances of hydrogen sulfide was found in newer welded tanks in the G3 tank farm in August.
TEPCO found levels up to 50 ppm in some of the tanks.
If it oxidizes to sulfuric acid it can corrode steel and concrete storage equipment including the water tanks.
TEPCO claims that the cause of the hydrogen sulfide gas was due to anaerobic bacterial decomposition. Hydrogen sulfide gas is a corrosion concern for the contaminated water tanks.
This is a problem from a human health standpoint for workers in the area. TEPCO cites a level of at least 50 ppm. They do not report the exact concentrations over 50 ppm. Health effects can happen at doses lower…
View original post 76 more words