Results of ALPS Treated Water Marine Monitoring (Sampling on August 25, 2023)

日本語へ

1. The Ministry of the Environment (MOE), Japan has been conducting marine monitoring related to ALPS treated water that started to be discharged in the afternoon of August 24, 2023.

2. The analysis results of seawater, sampled in the morning of August 25 showed that the tritium concentrations were below the lower limit of detection (below 7~8 Bq/L) at all 11 sampling points and would have no adverse impact on human health and the environment.

3. In this analysis, the concentrations of Gamma (γ) ray nuclides were also measured and found to be below the lower limit of detection for all of the samples.

■ Outline of the monitoring

MOE Japan is to conduct weekly analysis of tritium concentrations for the purpose of rapid analysis, together with γ ray nuclides (Cesium-137 and other nuclides), for the time being, to strengthen and expand monitoring after discharge of ALPS treated water. This press release announces the first monitoring results.

■ Details of the monitoring results

Details of the monitoring results are available in the Attachment below and on the website of “ALPS Treated Water Marine Monitoring Information” (https://shorisui-monitoring.env.go.jp/en/).
The results of the subsequent monitoring will be uploaded on the same website.

■ Sampling of seawater

When using photos above, please comply with the rules specified on the following webpage:
https://www.env.go.jp/en/utility/copyright.html

Attached File

Attachment: Results of ALPS Treated Water Marine Monitoring Seawater Survey (tritium and gamma ray nuclides (rapid analysis)) (August 25, 2023))[PDF 370KB]

Results of ALPS Treated Water Marine Monitoring (Sampling on August 25, 2023)

■ Outline of the monitoring

■ Details of the monitoring results

■ Sampling of seawater

Attached File

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