Tokyo Electric Power Co. (TEPCO) resumed decontaminating water at the Fukushima Daiichi nuclear power plant after fixing a software flaw that caused an automatic shutdown of the decontamination system. After a short investigation identified the flaw, the problem was corrected and decontamination resumed. The decontaminated water is being reused to cool reactors at the facility. Read More »
Tokyo Electric Power Co. (TEPCO) has repaired faulty hoses and restarted the new cooling system for the reactors at the Fukushima Daiichi nuclear energy facility. The system resumed operations after the repair. The system, which on June 27 began circulating decontaminated water through reactors 1, 2 and 3, had developed leaks in pipes and hoses shortly after it was activated. Read More »
Tokyo Electric Power Co. (TEPCO) has partially restored a cooling water recycling system at the Fukushima Daiichi nuclear energy facility. Of the 16 tons of water injected per hour to cool reactors 1, 2 and 3, 13 tons are decontaminated water that has been processed through this system. In its first two weeks of operation, the water treatment system has processed about 1,850 tons of radioactive water that had accumulated at the plant. TEPCO suspended operations a number of times during test runs because of problems with a device that removes radioactive substances and subsequently switched to a different material that absorbs radiation. Goshi Hosono, an adviser to Japanese Prime Minister Kan, said that although the cooling system has not been fully restored from a pump failure last Saturday, the start of recycling cooling water is an important step toward stabilizing the reactors. Read More »
Tokyo Electric Power Co. is continuing efforts to reduce the accumulation of radioactive water from cooling operations at Fukushima Daiichi reactors 1, 2 and 3. With reactor temperatures stabilizing, the company is reducing the water injection flow rate into the reactors. The total inflow rate is now about 386 tons per day. Heavy rains are challenging TEPCO’s effort to contain water accumulating onsite. Read More »
Tokyo Electric Power Co. (TEPCO) is working to restart full-scale tests of the water filtration system it will use to decontaminate and recycle radioactive water that has flooded the basements of buildings at the Fukushima Daiichi nuclear energy facility. The system went into full operation on Friday but was shut down after five hours when radiation levels rose more quickly than anticipated in the part of the system that removes oil and sludge. TEPCO may add more equipment to remove oil or lower the water flow rate through the system. Cooling water injections into reactors 1, 2 and 3 are accumulating in the building basements at the rate of 500 tons per day, and could overflow in about a week if the decontamination system is not functional by then. Read More »
Taking Action To Boost Safety at U.S. Nuclear Energy Facilities
Through its relentless commitment to the pursuit of excellence in operations, the U.S. nuclear industry is taking significant action to ensure that each of the nation’s 104 nuclear plants operate safely and securely.