Officials at Tokyo Electric Power company or tepco say the advanced system is the key to their plans to purify the contaminated water. The company aims to decontaminate thousands of tons of stored wastewater by march 2015. Eng year in they say chemicals may have corroded their system so they ep enforced it with corrosionproof material. Workers will begin a test run of one of the systems on friday. They plan to start the remaining two systems by mid november. The filters not remove all radioactive isotopes but they expect they can treat 500 tons of contaminated water every day. Tepco is struggling to deal the radioactive buildup of water but on the other side of the country it faces a different problem. We have this report from the Largest Nuclear power plant. The utility is trying to persuade the governor to support restarting two of the seven reactors. Tepco says they want their approval for government safety checks to the reactors. The two men met on wednesday. Wednesdays meeting. Th