TEPCO Fukushima Daiichi Nuclear Power Plant ALPS Treated Water Monitoring Results after Discharge into the Ocean (3 September – 8 September 2023)

●TEPCO
On 3, 4, and 5 September, the monitoring results of tritium concentration in seawater collected from 10 locations within 3km of the Fukushima Daiichi nuclear power plant confirmed that tritium concentration was below the lower limit of detection at all monitoring points.
 
●IAEA
On 8 September, the monitoring results of tritium concentration in seawater collected at multiple points within 3 km by IAEA staffs confirmed that tritium concentration was below the standard. It is the first sampling by IAEA since the start of the discharge.
https://www.iaea.org/newscenter/pressreleases/iaea-conducts-its-first-seawater-sampling-after-japans-discharge-of-alps-treated-water-finds-tritium-level-below-limit
 

●the Japanese Government Fisheries Agency
In the morning of 3 and 4 September, the results of monitoring of tritium concentration in halibut caught from 4km north of the ALPS treated water discharge point and 5km south of that discharge point confirmed that tritium concentration was below the lower detection limit at all the monitoring points.

The Government of Japan is conducting three types of monitoring (monitoring of treated water in tanks, real-time monitoring, and sea area monitoring) in a multilayered manner with the involvement of the IAEA. The IAEA also conducts sea area monitoring.
These monitoring results can be accessed at any time in the following websites;

1. Monitoring of treated water in tanks

TEPCO:
https://www.tepco.co.jp/en/decommission/progress/watertreatment/measurementfacility/index-e.html
 
JAEA (Third Party Monitoring) :
https://fukushima.jaea.go.jp/okuma/alps/index_e.html
 

2. Sea area monitoring

TEPCO:
https://www.tepco.co.jp/en/decommission/progress/watertreatment/monitoring/index-e.html 
 
Ministry of Environment:
https://shorisui-monitoring.env.go.jp/en/
 
Fisheries Agency :
https://www.jfa.maff.go.jp/e/inspection/index.html#rapid　
 

3. Real-time Monitoring

TEPCO :
https://www.tepco.co.jp/en/decommission/progress/watertreatment/dischargefacility/index-e.html
 
IAEA :
https://www.iaea.org/topics/response/fukushima-daiichi-nuclear-accident/fukushima-daiichi-alps-treated-water-discharge/tepco-data