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TREATED WATER PORTAL SITE

TEPCO is prioritizing safety while steadily moving forward with each and every task needed to decommission the Fukushima Daiichi Nuclear Power Station and reduce risks as we aim to "balance recovery with decommissioning."
We are making every effort to convey accurate information about initiatives pertaining to ALPS treated water, etc. which is part of the decommissioning process, so as to obtain the understanding of society as a whole.

ALPS Treated Water Conditions of Discharging into the Sea

❶ ALPS Treated Water, etc.
Reduction Status

❷ Measurement/
Confirmation Facility Conditions

❸ Dilution/Discharge Facility Conditions

Current status

❹ Sea Area Monitoring Results

Current status
No significant change has been detected.

TEPCO

©Tokyo Electric Power Company Holdings, Inc.

What is ALPS Treated Water?

  • 1. Water treated with multi-nuclide removal equipment (ALPS) so that the concentrations of radioactive materials other than tritium sufficiently satisfy regulatory standards for safety (sum of ratios of legally required concentrations, excluding tritium, is less than 1) shall be referred to as, "ALPS treated water."

  • 2. Water that has been purified with multi-nuclide removal equipment (ALPS), but for which the concentrations of radioactive materials do not meet regulatory standards for safety (sum of ratios of legally required concentrations, excluding tritium, is 1 or higher) shall be referred to as, "Treated water to be re-purified."

  • 3. The term "ALPS treated water, etc." shall be used when referring to both types of water defined in 1. and 2. above.

Attention: Open Call for Tritium Separation Technology

In relation to the open call for "Technology to separate Tritium from Water Treated with Multi-Nuclide Removal Equipment (ALPS)", it was reported that there was acts such as demanding money based on a false information that their proposal has been adopted.
TEPCO Group Companies, Mitsubishi Research Institute (MRI), a third party organization, and the relevant ministries will NOT demand for any money related to this open call.

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