On 3 October 2013, the Japanese Nuclear Regulation Authority (NRA) provided the IAEA with an update on radioactivity in seawater as of 28 September 2013.
TEPCO, the operators of the Fukushima Daiichi Nuclear Power Station, issued updates on tank leakage and and countermeasures against contaminated water at Fukushima Daiichi NPS:
- Leakage from B Area South Tank, 3 October 2013. [pdf]
- Overflow of Water from the Notch Tank for H6 Area Located on the East of H5 Area at Fukushima Daiichi NPS, 1 October 2013. [pdf]
- Current Status of and Countermeasures Against Contaminated Water, September 2013. [pdf]
- Measures Against Contaminated Water/Outlines of Fundamental Measures. [pdf]
- Measures Against Contaminated Water/Outlines of Emergency Measures. [pdf]
- Contaminated Water Leakage from a Tank/Current Status. [pdf]
- Contaminated Water Leakage from a Tank/Measures for Risk Reduction. [pdf]
In addition, in a 3 October 2013 NRA press release provided the information that the NRA received a report from TEPCO, pursuant to the Act on Regulation of Nuclear Source Material, Nuclear Fuel Material and Nuclear Reactors, that TEPCO informed the NRA of the discovery of a leak in a storage tank. Details of TEPCO's report to the NRA are available here.