IAEA 공개 6 Data on Japan's Contaminated Water Discharge... 'Within Normal Range'

(Photo by IAEA webpage)

The International Atomic Energy Agency (IAEA) released safety evaluation data on the first day of the ocean discharge of contaminated water from Japan's Fukushima Daiichi Nuclear Power Plant on the 24th (local time).

On this day, the IAEA provided information on six types of data and whether they meet the standard values through its webpage.

The real-time data received from Tokyo Electric Power Company includes the radiation level of the treated contaminated water, the flow rate of the treated contaminated water, the radiation level of the seawater used for dilution, the hourly inflow rate of the dilution seawater, the tritium concentration in the diluted contaminated water, and the radiation level of the diluted water analyzed along the vertical axis.

The IAEA marked all six items with green lights indicating normal ranges. If measurements are not taken, a gray light is shown, and if abnormal values are detected, a red light is displayed.

The tritium concentration in the diluted contaminated water, which is of great interest, was recorded at 206 becquerels (Bq) per liter as of 7 p.m. that day. Tritium is a radionuclide that remains in the water even after the contaminated water has undergone radioactive nuclide removal processes.

The World Health Organization (WHO) guideline for tritium concentration in drinking water is 10,000 Bq/L. The 206 Bq/L shown on the webpage is significantly lower than the standard.

The IAEA explained, "It has been confirmed that the tritium concentration is far below the Japanese operational standard of 1,500 Bq/L."

The radiation level of the contaminated water measured at the pump transporting the contaminated water to the dilution facility was 5 CPS. CPS is a unit measuring radiation intensity per second.

The flow rate of the treated contaminated water is 19.05 cubic meters per hour, indicating the hourly flow rate of the contaminated water moving to the dilution facility.

The hourly inflow rate of the seawater used for dilution is 15,260 cubic meters per hour. Additionally, the radiation level of the seawater is 8.3 CPS.

The IAEA stated that all these values are at levels where no unexpected radiation has been detected.

This content was produced with the assistance of AI translation services.