IAEA confirms tritium below Japan's limit in 25th ALPS water batch
TEPCO began releasing the batch on October 26; about 188,000 cubic metres have been discharged since August 2023.
Key facts
- On-site analysis found tritium far below Japan's operational limit of 1,500 becquerels per litre
- IAEA independently sampled the batch before its release into the sea
- Tritium in the first 24 batches also confirmed far below Japan's limits, per IAEA
- July 2023 IAEA report concluded negligible radiological impact on people and environment
- IAEA keeps staff at the site and monitors throughout the discharge process
The International Atomic Energy Agency said on October 27 that Tokyo Electric Power Company had begun discharging the 25th batch of ALPS-treated water from the Fukushima Daiichi Nuclear Power Station on October 26. The IAEA independently tested samples from the batch before its release into the sea. On-site analysis confirmed 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 188,000 cubic metres of ALPS-treated water in batches since August 2023. The IAEA confirmed that tritium levels in the first 24 batches were far below Japan’s operational limits.
In a July 2023 report, the IAEA concluded that Japan’s approach was consistent with relevant international safety standards and that the release, as planned and assessed, would have a negligible radiological impact on people and the environment. The IAEA maintains a presence at the site and carries out monitoring and verification throughout the discharge process.
