Tritium Level Far Below Japan’s Operational Limit in 20th Batch of ALPS Treated Water, IAEA Confirms
The International Atomic Energy Agency (IAEA) has confirmed that the tritium concentration in the 20th batch of Advanced Liquid Processing System (ALPS)-treated water, which Tokyo Electric Power Company (TEPCO) commenced discharging today from the Fukushima Daiichi Nuclear Power Station (FDNPS), is far below Japan’s operational limit and consistent with international safety standards.
As part of its ongoing safety review, the IAEA independently tested samples from the latest batch before it was released through a one‑kilometre tunnel into the ocean. Analysis at the site showed that tritium levels were far below Japan’s operational limit of 1,500 becquerels per litre and met international safety standards.
Japan has discharged roughly 149,000 cubic meters of ALPS‑treated water in batches since August 2023. The IAEA has confirmed that the tritium levels in all first 19 batches were far below the operational limits set by Japan.
: International Atomic Energy Agency