Tepco halts ALPS water cleanup system at Fukushima nuke plant


Tokyo Electric Power Co. halted the operations of all three advanced radioactive water cleanup systems, collectively called Advanced Liquid Processing System, or ALPS, at the Fukushima No. 1 nuclear plant on Tuesday.

Tepco made the decision after it found that one of the systems, called B, was not functioning properly.

Water samples from System B on Monday showed that levels of beta ray-emitting radioactive substances, such as strontium-90, only dropped to several tens of millions of becquerels from several hundred million becquerels, instead of decreasing to several hundred becquerels.

Tepco suspended water decontamination work with the other two systems as well due to concerns about similar problems.

With its daily processing capacity of 750 tons, ALPS is regarded as a key element in containing the radioactive water crisis at the crippled plant. However, due to a series of problems, Tepco has yet to start full operations.

The company aims to finish processing contaminated water at the plant, including some 340,000 tons currently kept in storage tanks, by the end of next March. To accomplish this, it plans to expand the capacity of ALPS. The government also plans to develop a high-performance version of ALPS that leaves less radioactive waste than the current system.

Meanwhile, Tepco has not decided what to do with water processed by ALPS, which still contains tritium, the only substance the system can’t remove.

  • phu

    So they’re planning to build a more effective version of a system that… doesn’t work. And when this system is “done” with the water, it still needs further decontamination… but yeah, we haven’t really figured that one out.

    Three years, tens of millions of dollars, and they don’t even know what they want to do, let alone have the ability to do it. Throw in the towel and let someone that knows what they’re doing take over, guys, at this point you’re just spinning your wheels and risking further contamination with your leaky storage and glitchy processing system.