The safety of the discharge of ALPS treated water / ALPS 処理水海洋放出の安全性


The safety of the discharge of ALPS treated water / ALPS 処理水海洋放出の安全性

What is "ALPS treated water"?

It is water that contains radioactive substances from inside the buildings of the Tokyo Electric Power Company’s Fukushima Daiichi Nuclear Power Station, and has been purified and treated until it satisfies safety standards for all radioactive substances besides tritium.

For tritium, the water is significantly diluted with seawater before discharge so that it fully satisfies safety standards. The tritium concentration after dilution is less than 1/40 of the safety standard (or 1/7 of the WHO drinking water standard).

Because the water satisfies safety standards before it is discharged and the total amount discharged is also controlled, there is no concern about effects on human health or the environment.

* ALPS: Advanced Liquid Processing System. It is a system that removes multiple radionuclides from water.





Video: Why is the discharge of ALPS treated water safe?                                                                                   Video: 29 radionuclides and ALPS (Advanced Liquid Processing System)




What is "Tritium" in ALPS treated water?

Tritium is a relative of hydrogen (H-3), and is an element produced naturally every day. As a result, it is contained in tap water, rainwater and also in our bodies. It is a radioactive material that is broadly present in the natural environment.

The energy of radiation emitted by tritium is extremely weak and can be blocked by a single sheet of paper.

Tritium is being discharged into the seas from many nuclear facilities around the world, and no adverse effects from tritium have been found in the areas surrounding these facilities.




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