On 14 May 2014, Japan provided the IAEA with an?update?to current information on radioactivity in seawater at TEPCO's Fukushima Daiichi Nuclear Power Station (NPS).
The update shows that all radionuclides (i.e. Cs-134, Cs-137, total Beta and H-3) have remained low and stable from 5 April to 11 May 2014 at the sampling points T-1 and T-2-1. These sampling points near Fukushima NPS are sentinels to assess effects on the environment by incidents including a leakage of contaminated water.
The NRA also provided an update on the?sea area monitoring results?for radioactivity obtained from sea water samples taken at a distance of 2 to 200 kilometres from TEPCO's Fukushima Daiichi NPS.