Tokyo Electric Power Company is planning to use devices to remove salt from spent nuclear fuel pools at the Fukushima Daiichi nuclear power plant.
The operator fears that saltwater used to cool reactors 2 – 4 after the March 11 disaster could corrode stainless steel pipes and pool walls.
The new devices will arrive on 5 trucks and use special membranes and electricity to desalinate water.
TEPCO plans to first use the machinery by the end of this week at the number 4 reactor, which contains the most spent fuel. The concentration of salt is expected to be reduced by 96 percent in 2 months.
It will then follow up in reactors 2 and 3.
Water temperatures at all 4 reactor pools have been relatively stable since the installation of a circulating cooling system was completed on August 10th.
Reactor facilities to purify wastewater have all been equipped with desalinating filters.
Another device that uses the mineral, zeolite, to remove radioactive substances from circulating water has been installed in the cooling system of the number 2 to 4 reactors.
Through such measures, TEPCO hopes to stably operate the plant over the long-term until all the spent fuel is removed.